CN208963578U - A kind of stand-off structure of molded tray - Google Patents

Abstract

The utility model provides a kind of stand-off structure of molded tray, molded tray is at square, stand-off structure includes corner stand-off, edge stand-off and center stand-off, the quadrangle of molded tray is arranged in corner stand-off, the marginal center of molded tray is arranged in edge stand-off, and the center of molded tray is arranged in center stand-off.Its is reasonable in design, and bearing capacity is strong, and the habitat and stand-off iso-stress concentrated position for reinforcing rib are targetedly laid out and design, overcome in the prior art pallet local scour depth it is not high, the problems such as being easy to produce stress fracture and Local Cracking.

Description

A kind of stand-off structure of molded tray

Technical field

The utility model relates to molded trays.

Background technique

Pallet is the carrier of stack goods, is the tool of mechanized handling, carrying.Small freight and collection of the pallet dispersion Vanning is summed up by certain quantity, forms the transportation system of contained implement, therefore pallet together with fork truck with unit form transport The indispensable important utensil of modern logistics systems is had become, is generallyd use for countries in the world.

Werzalit company utility model in 1971 is added the wood fibre for being mixed with thermosetting resin in metal die The patented technology of material, wood particle-moulding manufacture particieboard.Litco company established first hand using the technology in 1979 Presswood pallet manufacturing enterprise (Presswood Pallet Plant).

Molded tray full name is plant fiber molding plane industrial pallet, and the raw material of common molded tray are wood shavings Sawdust, straw etc., are overall structures, and panel and 9 support legs are once molding formed.Tray plate upper surface is flat and smooth, The transport of various cargos can be met, lower surface is equipped with reinforcing rib.Stress equalization, nine foot distributions are able to satisfy forklift four to plate face in length and breadth To insertion, belong to plane four-way into fork single deck pallet.

Molded industrial tray is one kind important in producing moulded wood chips articles, is mainly used for harbour, goods yard, warehouse, workshop, quotient Etc. ground carry, storage cargo, it and cargo form a mobile unit or handling unit, with fork truck, carrier, crane etc. Mating reaction.Industrial pallet general requirements be 400mm ~ 600mm, 600mm ~ 800mm, 800mm ~ 1000mm, 1000mm ~ 1200mm, 1100mm ~ 1100mm.Dynamic carrying capacity is from 250kg ~ 1500kg, and pallet is self-possessed 10kg ~ 20kg, the arc of pallet Edge, beam channel and cleverly perfect reinforcing rib design, so that load factor is up to 80(dynamic load).Particle moulding industrial pallet For abnormity, equal strength hin shell member, from heavy and light, intensity is big, and bearing capacity is up to 60 ~ 80(dynamic load than (loading capacity) with self weight) and 200 ~ 300(static load).

Since the materials of molded tray are from the stalk of recyclable resources, branch bifurcation, sawdust etc., production technology is generallyd use The modes such as hot pressing, raw material and technique are all more environmentally friendly, and therefore, molded tray increasingly occupies the theme in pallet market, to molding The research of pallet be also increasingly it is intensive, how preferably utilize environmental protection material, how to improve the carrying and intensity of pallet, be all The focus on research direction of molded tray.

It is compared with traditional plastic pallet, molded tray has materials environmental protection, and manufacturing process is simplified, and manufacturing cost is cheap, The advantages that manufacturing process environmental pollution is small, and manufacture post processor is few, for pallet itself, molded tray is due to being using broken The waste material of last shape carries out compaction treatment, and the density of material after compacting is big, its bearing strength is high for the plastic pallet that compares, wear-resisting Property is good, and usage scenario is more extensive.

It is compared with traditional wood pallets, molded tray undoubtedly has very big advantage in terms of materials, and molded tray takes Material is usually the processing waste materials such as sawdust or wastes of crops, such as stalk etc., compared with the Wooden tray for the materials that need to lumber, Molded tray is not only to reduce cost, has even more met energy conservation and environmental protection and has protected the requirement of non-renewable resources, in addition, wooden Material its intensity and durability degree in storage will receive the influence of humidity and temperature in environment, in the biggish situation of humidity, wood Material be easy to it is mouldy conveying lead to performance sharp fall, service life is also very limited, compare under, by industrializing Molded tray made of the mould pressing process of production, since density is big, factor affected by environment is significantly reduced, under various circumstances The stability that performance maintains is substantially improved.Moreover, the intensity of wood pallets is affected by raw material drawing, different wood The pallet of material preparation is likely to have very big difference in performance.In addition, wood materials are after excision forming, surface roughness Height, corner even surface are likely to generate many burrs, if to carry out sanding and polishing, nothing to the surface of Wooden tray It is doubtful to greatly improve production cost and production cycle, but if do not polished, use scope can reduce, for example, can only place Wear-resisting or itself surface just very coarse object, for needing component to be protected to be then not suitable for.

Therefore, molded tray increases year by year in the ratio of pallet in the market, with constantly changing for molded tray production technology Into and improve, the frequency of use of molded tray is even more and is constantly being improved with double ratio in recent years, and traditional tray makes It is then constantly being reduced with significantly speed with accounting.

Chinese patent CN201721248397.1 discloses a kind of equidistant into fork pallet, including panel and collet foot knot Structure, the collet leg structure include center bottom stand-off, stand-off on base angle stand-off and side；Inclined wire trellis groove is arranged in the panel, Panel is divided into four square areas and eight isosceles right triangle regions by the inclined wire trellis groove, tell four just Center bottom stand-off is arranged in center after square region combination, and stand-off is all adopted on the center bottom stand-off, base angle stand-off and side With truncated rectangular pyramids structure, connecting groove is set, the connecting groove is straight in " convex " shape is fallen on the base angle stand-off and side between stand-off Road structure.Support holder structure disclosed in the patent can be improved the bearing capacity of pallet to a certain extent, but actually use In, it is found that due to the Layout Problem of reinforcing rib, the certain local location stress that may result in pallet are larger, and pallet is easy hair Raw fracture.Also, in the stand-off design aspect of pallet, the configuration aspects of itself of reinforcing rib and stand-off for stand-off inner wall Consider also not thorough, such as the reinforcing rib design of stand-off inner wall is unfavorable for being opened, the transition between reinforcing rib and stand-off inner wall There are Hard links for part, are easy to cause the internal partial wall stress of stand-off to concentrate disconnected so as to cause that may generate brittleness at stand-off It splits, influences the integral strength of pallet.In addition, the shape of the inside and outside wall of stand-off and inclination radian, it also can be to the bearing strength of pallet It has an impact, for example, some shapes or groove are arranged on stand-off outer wall, these grooves necessarily make the side wall of stand-off not Different with the wall thickness on position, the compression that different wall thickness is able to bear is also different, especially for the inclined stand-off portion of wall surface For position, if unsuitable position is provided with different wall thickness on inclined wall surface, it is more likely that can be to stand-off position Bearing capacity has a huge impact.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of stand-off structure of molded tray, structure design is closed Reason, bearing capacity is strong, and the habitat and stand-off iso-stress concentrated position for reinforcing rib are targetedly laid out and set Meter, overcome in the prior art pallet local scour depth it is not high, the problems such as being easy to produce stress fracture and Local Cracking.

For this purpose, the utility model the following technical schemes are provided:

A kind of stand-off structure of molded tray, for molded tray at square, stand-off structure includes corner stand-off, edge stand-off With center stand-off, the quadrangle of molded tray is arranged in corner stand-off, and the marginal center of molded tray, center is arranged in edge stand-off The center of molded tray is arranged in stand-off.

Further, corner stand-off, edge stand-off are identical with the height of center stand-off, so that support all when pallet is laid flat Foot bottom can be in the same plane.

Further, the bottom plate of center stand-off and quadrangle stand-off is at square.

Further, the bottom plate of edge stand-off is rectangular.

Further, the side wall of each stand-off slopes inwardly, so that each stand-off is respectively formed up big and down small shape.

Further, stand-off position includes stand-off side wall and stand-off bottom plate.

Further, the outer surface of stand-off bottom plate is plane, and two sides of inner surface are tilted to middle part, and are formed most at middle part Lower curtate position.

Further, step surface is set on the outer surface of stand-off side wall.

Further, step surface includes longitudinal surface and lateral face, and longitudinal surface is arranged along the short transverse of tray body, laterally Face connects two neighboring longitudinal surface, or one longitudinal surface of connection and stand-off side wall, passes through this longitudinal surface+transverse direction face+longitudinal direction Face or longitudinal surface+transverse direction face+stand-off side wall+longitudinal surface continuously connection type are formed in the outer surface of stand-off side wall Continuously step surface.

Further, the one of side wall or side of corner stand-off and edge stand-off are equipped with ribs, ribs Stand-off medium position is extended downward into from the opening of stand-off, ribs forms inside recess in the inner surface of stand-off side wall Portion, and outside protruding portion is formed in the outer surface of stand-off side wall.

The utility model in a first aspect, the utility model provides a kind of molded tray, including tray body, tray body It is equipped with stand-off structure and reinforcement structure, stand-off structure and reinforcement structure protrude from the lower surface of tray body, stand-off structure The support construction of tray body is formed, support construction can make somebody a mere figurehead tray body, so that the lower surface of tray body and lower layer There are certain spacing between object.If the lower surface of tray body can directly contact without the presence of stand-off structure Directly contacted to holding plane, or with the upper surface of next layer of object and/or pallet, pitch into, stack etc. durings, meeting The friction for generating large area, it is not only unfavorable if friction area increases since greater weight object would generally be carried on pallet In operation, also the contact surface of pallet can be caused significantly to wear, greatly reduced the pallet service life, meanwhile, do not support Making somebody a mere figurehead for structure, may be close together between the contact surface of pallet due to weight, and this state retention time is long, can Can make the gas between two contact surfaces be drained completely in addition two surfaces between mutually merge and cause to be tightly attached to one It rises and is difficult to separate, therefore, it is necessary to some aerial constructions are arranged in tray body.

In some preferred schemes, aerial construction be can satisfy, and is stacked together when the different pallets of same specification When, some surface is in contact between the aerial construction of upper and lower level adjacent trays, some surface does not contact, for example, When pallet is stacked together, the stand-off of upper tray is inserted into the stand-off of lower tray, but can be only inserted into A part, such as 1/3 position, in this way, can be unlikely to be bonded completely to stand-off inside configuration there are certain gap, It can make to prevent from being excessively bonded between surface when pallet storing or pasting for a long time there are certain gap between upper and lower supporter disk Tightly.

In some preferred modes, stand-off structure includes corner stand-off, edge stand-off and center stand-off, and the four of square It is respectively equipped with four corners stand-off on angle, edge stand-off is respectively equipped on four sides of square, edge stand-off is located at two neighboring The middle position of corner stand-off is additionally provided with a center stand-off, thus forms one in the center of square tray body The relatively stable structure of a nine stand-off, usually, either corner stand-off, edge stand-off or center stand-off, it Height be all identical, that is to say, that when pallet is laid flat, all stand-off bottoms can be placed on same flat just On face.

In some preferred schemes, tray body on the whole at square, the four edges of square be it is isometric, make Obtaining pallet can be placed by arbitrarily left and right or front-rear direction, this makes the pallet of the utility model be different from non-tetragonal structure Pallet, some pallets may be adjusted on Aspect Ratio, for the not equal pallet of surplus, be typically only capable in long side or It is pitched into unified to be pitched from long side into then stacking for pallet itself for example, in a support side of short side Direction requires, the different pallet of length and width, pitch into distance it is just different, also, if from short side pitch into, it is possible to due to short Side side length is shorter, be not achieved the fork of fork truck into width requirement, if the fork for meeting length of short sides is pitched into width requirement Into width just and long side fork into width mismatch, just easily cause long side it is practical pitch into width less than long side pallet fork Into width, cause long side pitch into when it is unstable.In addition, if be made into circle, from pitch into angle for, it is round not lateral Side is not easy to find and pitch into direction, and the edge of round tray is all arc, pitches with fork truck etc. into the direction of mechanism mismatch, It increases and pitches into distance, and this increased partial distance is not again effective distance, be unfavorable for pitching into therefore, tray body is suitable It is set as square.

In some preferred schemes, the outer rim of the quadrangle of square is changed into arc, and arc is conducive to forming and four Camber is arranged in angle, can reduce pallet itself and even hurt to the abrasion of surrounding objects and environment, if the quadrangle of pallet is still With sharp position, then probably other than abrasion, other articles can be also hooked into, camber is set, this can be prevented Kind phenomenon.

The second aspect of the utility model, the utility model provide the reinforcement structure on a kind of molded tray, reinforcement structure It is mainly arranged on the surface of tray body, reinforcement structure is mainly shown as that reinforcing rib, reinforcing rib are to be compressed on tray body Groove structure on surface, reinforcing rib include linking reinforcing rib, partition-type reinforcing rib and half partition-type reinforcing rib, this is mainly It is distinguished from whether reinforcing rib is connected to stand-off, the reinforcing rib that both ends are all connected to stand-off is referred to as linking reinforcement Muscle, both ends all get along well stand-off (or other structures on pallet) connection reinforcing rib be referred to as partition-type reinforcing rib, one end with Stand-off connection, and the reinforcing rib that the other end be connected to stand-off is referred to as half partition-type reinforcing rib, by pallet entirety by Power is researched and analysed, and in conjunction with the arrangement of stand-off structure, preferably needs to be simutaneously arranged adding for these three above-mentioned types on a pallet Strengthening tendons, by reinforcing rib come between adjusting tray ontology and stand-off structure as structure and height it is different caused by bearing capacity It is different.

In some preferred schemes, half partition-type reinforcing rib, half partition-type are equipped between edge stand-off and center stand-off One end of reinforcing rib is connected to edge stand-off, and the other end extends close to the position of center stand-off one side edge.Some preferred Mode in, one end of half partition-type reinforcing rib is connected with the side of center stand-off, and the other end extends close to edge stand-off one On the position of side.Half partition-type reinforcing rib is primarily adapted for use in a certain stand-off and the connection of reinforcing rib is excessive, is not suitable for reconnection and adds Strengthening tendons, but the area of its tray body between other stand-offs is larger, and has to the case where arranging reinforcing rib, for example, In the case where as shown in the figure, center stand-off has been connected to four reinforcing ribs, if remaining position reconnection reinforcing rib can The opening that entire center stand-off can be will cause is reinforced muscle and occupies, and in this case, disconnects center stand-off and reinforcing rib Connection, and only reinforcing rib is extended near the stand-off of center, do not influence the booster action that reinforcing rib can play, simultaneously The connection distribution between center stand-off and reinforcing rib is reasonably arranged again.In some preferred schemes, these half partition-types Tray body is divided into the part of four small square by reinforcing rib.

In some preferred schemes, between the edge stand-off between corner stand-off and center stand-off and in adjacent side It is equipped with linking reinforcing rib, the linking reinforcing rib of this part intersects two-by-two forms four criss-crossing reinforcing ribs groups, This four criss-crossing reinforcing ribs groups are located in four parts that half partition-type reinforcing rib is separated out, also, diagonal corner Line between stand-off and center stand-off is located along the same line, and so on the whole, and forms a big cross and reinforces Entire tray body is divided into the part of four triangles by muscle group, this big criss-crossing reinforcing ribs group, and cross is to compare Stable strengthening form, by the combination of whole grand cross shape and four part crosslets, so that entire tray body all obtains The support of reinforcement structure.

In some preferred schemes, linking reinforcing rib is equipped between edge stand-off and adjacent corner stand-off, these The four edges edge of pallet is linked as a square by linking reinforcing rib, this square makes all positioned at tray body edge On quadrangle contacted into an entirety, strengthened and supported at the ontology between stand-off and stand-off.

In some preferred schemes, this small square area is divided into four by the cross-shaped structure in small square A small delta-shaped region, wherein there are two the edges of small delta-shaped region by the edge stand-off and corner support on pallet side Linking reinforcing rib between foot is closed, and the small delta-shaped region of closure is formed, and other two small delta-shaped region is then Using half partition-type reinforcing rib as hypotenuse, non-closed small delta-shaped region is formed, comparatively, non-closed is small For delta-shaped region closer to tray center position, centre one side bearing area is big, and pressure can uniformly be spread out, And the stand-off in centre only has center stand-off one, and overall structure is relatively uniform, and comparatively intensity is more stable, but It is that the small delta-shaped region of closure is then proximate to the edge of pallet, edge inherently belongs to stress and is easy concentration Position, and the stand-off of edge is distributed the position than comparatively dense, especially close to corner, it is therefore desirable to and additional increase is reinforced Structure is more nearly the bearing capacity of entire pallet unanimously.Therefore, in some preferred schemes, in the small triangle of closure In shape region, it is equipped with partition-type reinforcing rib, the small delta-shaped region one-to-one correspondence of partition-type reinforcing rib and closure, partition-type is reinforced The main function of muscle is the intensity in reinforced tray edge and corner, the intensity for the small delta-shaped region being especially closed.Some In preferred mode, partition-type reinforcing rib is the reinforcing rib of arc, and the both ends direction of arc reinforcing rib is closed small delta-shaped region Bevel edge both ends, that is, close the both ends of the linking reinforcing rib positioned at edge of the small delta-shaped region of the closure.In existing skill In art, also there is a situation that similar arc reinforcing rib is set, such as described in background technology equidistant pitches into also setting in pallet Arc reinforcing rib has been set, but the arc reinforcing rib in background technique is all usually connection stand-off, in fact, being not only The reinforcing rib of arc reinforcing rib, overwhelming majority pallet in the prior art is all connection stand-off, and on the one hand this is a kind of tradition Design method on the other hand, can if the region that setting one and other regions separate completely for molded tray Increase mold process and be opened the difficulty of process, because the molding raw material of isolated area can not carry out with other regional connectivities Weighing apparatus.And this difficulty is then not present in the technical solution of the utility model, because of the thickness of reinforcing rib set in the utility model It spends and is consistent with the thickness of pallet itself, the size that upper/lower die is adjusted according to shape can be realized, and this is practical new In type, the section of arc reinforcing rib is up big and down small structure, and the both ends of arc reinforcing rib are also that fillet is excessive, be will not influence out Mould.Also, if also using linking reinforcing rib in closed small delta-shaped region, that is to say, that reinforcing rib itself is held in the palm with corner Foot connection, then, as shown, will cause corner stand-off towards the connection for being reinforced muscle at this side opening in pallet completely Occupy, found in experiment and actual use, such reinforcement structure, will cause stand-off position stress concentrate, stand-off and plus Brittle fracture easily occurs for the junction of strengthening tendons, and the intensity for causing pallet integrally to can bear has dropped 10% or so.Therefore, it adopts With partition-type reinforcing rib, closed small delta-shaped region is reinforced.In some preferred schemes, partition-type reinforcing rib Both ends are not more than the width of reinforcing rib itself at a distance from stand-off upper end opening edge, since reinforcing rib still needs as far as possible It is distributed on the surface of tray body, therefore, the end of reinforcing rib still has to close to stand-off position, if reinforcing rib cannot Enough run through, does not then have the booster action to some region.

It is above-mentioned it is big and small be that in contrast, such as triangle, two diagonal linking reinforcing ribs will The triangle that entire pallet is separated into, than the linking reinforcing rib between corner stand-off and center stand-off and neighboring edge stand-off The area for the triangle that a part of pallet is divided into is big, therefore the former is known as big triangle or biggish triangle, after Person is known as small triangle or lesser triangle, it may also be said to, the latter is a part in the former.For square Speech, entire pallet are separated out the square come, four separated than half partition-type reinforcing rib by the linking reinforcing rib at edge The area of a square is big, therefore, the former be known as big perhaps biggish square the latter of square be known as small square or compared with Small square, it may also be said to, the latter is a part in the former.

In some preferred modes, the lateral partition-type reinforcing rib positioned at tray edge is equipped with recess, and recess can be with Play the role of can also be used as the retaining part in pallet handling process itself convenient for molding.

The third aspect of the utility model, the utility model provide a kind of stand-off structure of molded tray.

Stand-off structure includes corner stand-off, edge stand-off and center stand-off, and four angles are respectively equipped on the quadrangle of square Portion's stand-off is respectively equipped with edge stand-off on four sides of square, and edge stand-off is located at the middle position of two neighboring corner stand-off, In the center of square tray body, it is additionally provided with a center stand-off, thus forms nine stand-offs relatively Stable structure, usually, either corner stand-off, edge stand-off or center stand-off, their height be all it is identical, That is, all stand-off bottoms can place just in the same plane when pallet is laid flat.

In some preferred schemes, the global shape of center stand-off is also square, and square here refers to, center The base plate configuration of stand-off.In some preferred schemes, the size and shape of the bottom plate of the bottom plate and center stand-off of corner stand-off It is all the same.In some preferred schemes, the bottom plate of edge stand-off is rectangle, and square identical with side directions where rectangle Shape side is long side, and two other side is short side.In some preferred modes, the quadrangle of above-mentioned square and rectangle all by Why rounding, edge stand-off will be set as rectangle, be that carry is set because the position between edge stand-off and corner stand-off is fork, The width that this fork carry is set has to and pitches to be cooperated into the fork of mechanism into component, since corner stand-off can not carry out in length Variation, and if corner stand-off integrally increases, may influence whether the intensity of the even entire pallet in stand-off position, and edge Stand-off length (i.e. along place side this side length) then can suitably adjust, thus to adjust corner stand-off and edge support Spacing between foot, and extend to the corner stand-off of two sides or increase from edge stand-off, so as to adjust edge stand-off and The distance between corner stand-off enables the fork of pallet itself to meet into distance and pitches into requiring.

In some preferred schemes, the side wall of stand-off slopes inwardly, so that stand-off forms up big and down small shape, this Sample, for the pallet of same specification, the size of the outermost end of stand-off will obviously be less than the size at tray openings, upper layer support Foot is inserted into lower layer's stand-off, but since there are wall thickness for pallet, and the oral area of stand-off is larger, therefore, upper tray Stand-off can only be partially inserted into the stand-off of lower tray, without being bonded completely.

In some preferred schemes, stand-off position includes stand-off side wall and stand-off bottom plate.

In some preferred schemes, the inner surface and the outer surface of stand-off bottom plate is plane.In some preferred schemes In, the outer surface of stand-off bottom plate is plane, and inner surface has certain gradient.In some preferred schemes, stand-off bottom plate Outer surface is plane, and two sides of inner surface are tilted to middle part, and form minimum position at middle part.In some preferred schemes, Minimum position is V groove.In some preferred schemes, minimum position is U-shaped groove.U-shaped groove is come relative to v-depression It says, it is more wider in the groove width of bottommost, when pallet width is larger, U-shaped groove can be selected, because pallet is wide Degree is big, and comparatively, the size of stand-off also can be big accordingly, in the case where pallet thickness change is little, if still using V Connected in star, it is likely that the stand-off side wall in stand-off bottom groove two sides can be thicker, if stand-off sidewall bottom and other positions Thickness have big difference, be unfavorable for the uniform force of stand-off entirety, therefore, when the side length of pallet is more than 900mm or stand-off and V When maximum width on this consistent direction of the groove width direction of connected in star is more than 60mm, using U-shaped groove.Some preferred In mode, the width of U-shaped groove bottom is no more than the 1/2 of tray bottom width, and U-shaped groove is unsuitable wide, otherwise will affect support The intensity of sole and stand-off bottom plate and stand-off side wall junction.In some preferred schemes, the direction of groove and pallet One of side direction it is identical.In some preferred schemes, one of side in the direction and pallet of groove Direction is angled, such as 15 °, 30 °, 45 ° or 60 °, is also possible to other angles, this angle can be according to stand-off Depth and the tilt angle of stand-off side wall are adjusted.In some preferred modes, when the tilt angle of stand-off side wall When more than 30 °, can with the gradient of appropriate adjustment groove because, if the tilt angle of pallet side wall is big, suffered by pallet side wall To lateral compression and shear stress will become larger, when the inner surface of stand-off bottom plate be groove when, the inner surface of stand-off side wall must So have with the matched inclined-plane in groove two sides, the power that stand-off inner surface receives at this time will be fully distributed on inclined-plane, to make At the stress of stand-off side wall concentrates on having bevelled two sides, and then stress is less even without will cause stand-off for two sides in addition The discontinuity at position, if suitably changing the groove direction of stand-off baseplate inner surface, inclined-plane can be along groove direction Change and be distorted, in this case, can all be afforded everywhere in stand-off side wall and carry out cross component force, then the stress at stand-off position It is just comparatively relatively uniform, it will not that there is a situation where local pressures be excessive.In some preferred modes, in same arrangement The direction of groove in different stand-offs can be different, allow the diversity of distribution of force more preferable in this way, stress is avoided to concentrate, for example, The groove direction of corner stand-off can be oblique consistent with quadrangle, and the groove direction of both sides of the edge stand-off can be on the contrary, to make Stress is obtained to be evenly distributed in all directions.

In some preferred schemes, the thickness of stand-off bottom plate and the consistency of thickness of tray body, stand-off bottom plate here Thickness should be the minimum thickness of stand-off bottom plate, namely eliminate the thickness at groove position, remaining stand-off base plate thickness.One In a little preferred schemes, the thickness of stand-off bottom plate is not less than the thickness of tray body.Stand-off bottom plate is subject to answer on entire pallet The position that power and pressure are concentrated, therefore, the thickness of stand-off bottom plate has to be guaranteed, and can guarantee the integrated support of pallet Intensity.In some preferred schemes, the thickness of stand-off bottom plate and stand-off side wall junction is greater than the thickness of stand-off bottom plate, stand-off The junction of bottom plate and stand-off side wall, due to being bent in structure, bending place is usually stress raiser, therefore is needed Will bigger thickness carry out proof strength.In some preferred modes, the inner wall of stand-off bottom plate and stand-off side wall junction is round Sliding excessive cambered surface, the stress that round and smooth excessive cambered surface can offset a part of bending part are concentrated.

In some preferred schemes, step surface is set on the outer surface of stand-off side wall, together due to stackable pallet When, the stand-off of upper tray is inserted into the stand-off of lower tray, therefore, step surface is arranged, can reduce upper and lower level support The contact surface of foot, to reduce contact friction when upper and lower level pallet is stacked, in addition, continuous step surface can be in stand-off side wall Rough shape is formed on outer surface, and necessarily there is peak shape and paddy shape between rough shape, paddy shape is inwardly recessed, Recessed paddy shape can form the ventilative gap between pallet, in this way, weight is big, will not occur even if the quantity stacked is more Because squeeze so that up and down the gap between pallet become smaller even disappear fit together so as to cause contact surface be difficult to it is separated Situation.In some preferred modes, the outer rim of step surface is processed to round and smooth cambered surface, will not just hold in the palm when stacking to lower layer The stand-off inner wall of disk causes very big abrasion.

In some preferred schemes, the thickness of stand-off side wall and the thickness of tray body are identical.Some preferred Scheme in, stand-off sidewall thickness be less than tray body thickness.In some preferred schemes, the setting of step surface is protruded from The original thickness of stand-off side wall.In some preferred schemes, the integral thickness of step surface and stand-off side wall is not less than pallet sheet The thickness of body, step surface can increase the thickness of stand-off side wall to a certain extent, therefore, remove the stand-off side of step surface part The thickness of wall can suitably reduce.

In some preferred schemes, step surface includes longitudinal surface and lateral face, and longitudinal surface is along the height side of tray body To arrangement, lateral face connects two neighboring longitudinal surface, or one longitudinal surface of connection and stand-off side wall, by this longitudinal surface+ Lateral face+longitudinal surface or longitudinal surface+transverse direction face+stand-off side wall+longitudinal surface continuously connection type are in stand-off side wall Outer surface form continuously step surface.

In some preferred schemes, what is had between longitudinal surface and the short transverse of tray body is no more than 5 ° of inclinations angle Degree, this tilt angle must be it is consistent with the tilt angle of the inner surface of stand-off side wall, longitudinal surface have certain inclination Angle can form grafting guiding, reduce hard contact when grafting, convenient for the grafting between upper layer stand-off and lower layer's stand-off.

In some preferred schemes, lateral face is the arcwall face heaved outward, as previously mentioned, arcwall face can reduce it is slotting Abrasion when connecing, also, since stand-off is the exposed component of pallet, the outer wall of stand-off side wall is easy to and others in use Object is in contact collision, if having sharp position on outer wall, it is easy in use other objects are caused to damage, because This, requirement can be more conform with by setting arcwall face for lateral face.

In some preferred schemes, width and the tilt angle of stand-off side wall and the length of longitudinal surface in lateral face have It closes, in general, in a stand-off height, arranges 10-12 longitudinal surface, it is corresponding also to arrange 10-12 lateral face, longitudinal direction The equal length in face, the length and radian in lateral face are also identical, and the quantity of longitudinal surface is fewer, and the tilt angle of stand-off side wall is got over Greatly, then the size in lateral face is bigger, if the tilt angle of longitudinal surface is big, the size in lateral face can accordingly reduce, to reach To a best stress proportion.For example, in one embodiment, arranging that 10 longitudinal surfaces and 10 lateral faces, longitudinal surface incline Rake angle is 3 °, and the radian diameter in lateral face is equivalent to the 1/3-1/4 of longitudinal surface length, is at this time one kind of best stress proportion Embodiment, the stress of stand-off side wall is the most uniform at this time, and almost the same with other position stress of tray body, Bu Huifa Raw local fracture phenomenon.

In some preferred schemes, second step surface calculated since stand-off top only has lateral face or longitudinal direction Face, and this only lateral face or longitudinal surface are a raised cambered surfaces slightly outwards, because of the setting position of first order step The connection bending part just in stand-off and tray body is set, the second level step being connected with first order step is set as excessive arc Face, the stress that bending part can be effectively relieved is concentrated, so that the connection of bending part and stand-off side wall is excessively more smooth.

In some preferred schemes, the one of side wall or side of corner stand-off and edge stand-off, which are equipped with, to be reinforced Rib, ribs extend downward into stand-off medium position from the opening of stand-off, ribs the inner surface of stand-off side wall formed to Interior recessed portion, and outside protruding portion is formed in the outer surface of stand-off side wall, the effect of ribs is to balance corner support The phenomenon that foot and edge stand-off are unevenly distributed each edge unbalance stress that may cause due to the junction with reinforcing rib, for example, By taking the stand-off of corner as an example, the upper end opening of corner stand-off is in towards being connected on an angle of center with reinforcing rib, with this Two adjacent sides of a angle are also connected to reinforcing rib, so that towards the position inside pallet there are three the upper end openings of this stand-off Set, there is the connection structure with reinforcing rib, this connection structure make at stand-off upper end three be open, necessarily cause this three be in by To pressure be that the distribution of the compressive stress generated and other positions are different, and this at three all in this stand-off in pallet One side of something of side, at this point, can balance and connect at above-mentioned three towards ribs is arranged on an angle on the outside of pallet in this stand-off It connects and is formed by opening, so that the opening distribution of pallet on the whole is comparatively more average, be unlikely to when being under pressure Different orientation shows entirely different bearing capacity.For another example, as edge stand-off, towards the outermost one side of pallet Being equipped with ribs is as previously described formed to be connected to other edges of edge stand-off upper end opening with reinforcing rib Opening carry out stress balance.Either corner stand-off or edge stand-off, since the connection of itself and reinforcing rib is relatively flat It is distributed, therefore, ribs is also normally positioned at the middle part at corner or edge.Correspondingly, center stand-off is due to it Connection with reinforcing rib is uniformly distributed along being open, therefore does not need setting ribs.

In some preferred schemes, the upper opening of ribs is greater than the lower openings of ribs, on the one hand, this knot Structure design is matched with the shape of stand-off itself, because stand-off itself is also that upper opening is greater than base plate size, another party Face, up big and down small size are more conform with the direction of stress transmitting, are more advantageous to the pressure-bearing at stand-off position.

In some preferred schemes, the both ends of the junction of ribs and stand-off inner wall form excessive fillet, ribs Low side and stand-off inner wall somewhere must be connection, this requires an excessive shape, and usually, junction is Lines, but can be easy to produce shape stress using this hardwired form of lines, are concentrated to alleviate this stress, can be with The both ends of junction are used into rounded shapes.In some preferred modes, the entire bottom of ribs all uses rounded shapes Excessively, without rectilinear strip, in practice it has proved that, it is excessive using rounded shapes, to shape stress caused by stand-off side wall position It is minimum.

In some preferred schemes, the outer wall of ribs has turning, and the external of turning forms excessive cambered surface, come relatively It says, the intilted angle in position more than turning is small, and the intilted angle in turning position below is big, therefore, turning Between above part and the turning part below have certain angle, turning position as between this two sections connection and Excessively, the height at turning position is not less than the height of level-one step surface, and no more than the height in two-stage step face, turning position needs It has the dimensions, otherwise excessive position is insecure, but can not be excessive, otherwise can have shadow to the global shape of ribs It rings, and does not have effect.The outer wall surface of ribs is smooth, is on the one hand to inserting for stand-off position when upper and lower level stackable pallet It connects conveniently, on the other hand, the presence of ribs can play direction limitation and guidance to upper and lower level pallet when stacking, so that It is whole more neat stackable pallet is stored together when.In some preferred schemes, the depth of ribs is greater than stand-off depth 1/2 and be less than stand-off depth 2/3.

The fourth aspect of the utility model, the utility model provide a kind of mold for preparing above-mentioned molded tray, including upper Mode structure and lower die structure, upper die structure and lower die structure are opened and mold for pallet to be pressed under the action of moulding press Type.

Upper die structure includes upper clamping plate, upper die plate, upper mold template and upper mold heating platen, and upper clamping plate is used for and is molded Machine connects and entire upper die structure is fixed on moulding press, the installing component of the upper surface connection moulding press of upper clamping plate, on The lower surface of die holder plate is fixedly connected with upper mold heating platen, is equipped with more equidirectional uniformly distributed mold heating tubes in upper mold heating platen, The lower surface of upper mold heating platen is fixedly connected with upper mold template, and the periphery of upper mold template and upper mold heating platen is arranged with upper die plate, The lower surface of upper mold template can install stand-off mold core by way of grafting, and the upper surface of upper die plate is equipped with cooling passage, The side of upper mold heating platen is arranged in the position of cooling passage.

In some preferred schemes, the top of stand-off mold core is equipped with clamping bump, and the lower surface of upper mold template, which is equipped with, to be used In the wedging position connecting with stand-off mold core, wedging position protrudes from the lower surface of upper mold template, also, wedging position has With the consistent outer surface of stand-off inner wall shape of corresponding position, the middle part of wedging position is equipped with matched recessed with clamping bump Area, stand-off mold core pass through the cooperation of clamping bump and concave area, are removably mounted in upper mold template, also, stand-off mold core After installation, the outer surface of outer surface and wedging position forms continuous smooth surface, the continuous smooth surface and the stand-off The inner surface configuration of the side wall of stand-off corresponding to mold core is consistent.

In some preferred schemes, part of the lower surface of upper mold template other than wedging position is equipped with to be added for suppressing The reinforcing rib punch-pin of strengthening tendons upper surface, reinforcing rib punch-pin include the wedging position and pair adjacent thereto for connecting corresponding edge stand-off It answers the lateral connection formula reinforcing rib punch-pin of the wedging position of corner stand-off, be separately connected the wedging position of each corresponding corner stand-off With the first oblique linking reinforcing rib punch-pin of the wedging position of corresponding center stand-off, the two neighboring corresponding edge stand-off of connection The oblique linking reinforcing rib punch-pin of the second of wedging position, one end connect the wedging position of corresponding edge stand-off and the other end extends Half partition-type cross reinforcing punch-pin and partition-type arc reinforcing rib to the wedging position close to corresponding center stand-off is convex Mould.

In some preferred schemes, the first oblique linking reinforcing rib punch-pin is with the wedging position for corresponding to center stand-off It is centrally formed big cross punch-pin, the first oblique linking reinforcing rib punch-pin and the second oblique linking reinforcing rib punch-pin intersect Small cross punch-pin is formed, is formed between the corresponding lateral connection formula reinforcing rib punch-pin of small cross punch-pin and position small Triangle, partition-type arc reinforcing rib punch-pin are arranged in this small delta-shaped region.

Upper surface forming of these reinforcing rib punch-pin for reinforcing rib on pallet, the position that these reinforcing rib punch-pin are protruded Section be all round and smooth cambered surface, the inner surface for the reinforcing rib for being shaped so as to out is also round and smooth cambered surface, can be utmostly The edge stress for mitigating pallet, improves the bearing capacity of pallet, and arc reinforcing rib, can either reinforced tray by the way of partition The bearing capacity at edge, and region of stress concentration can be formed to avoid in pallet stand-off position.

In some preferred schemes, the two sides of upper die plate are equipped with engaging lug, and engaging lug is symmetrically dispersed in die-cushion The edge of plate two sides, engaging lug and upper die plate are integrally formed, and engaging lug is equipped with installation connecting hole, upper clamping plate and upper die-cushion Plate is fixedly connected by the way that engaging lug is removable.In some preferred modes, the two sides of upper clamping plate and the engaging lug same direction Outer edge and the outer edge of engaging lug flush, the other two sides of upper clamping plate are located within the scope of upper die plate, and this two The position of side, which meets, should cover upper mold heating platen, expose again cooling passage (at least a part of cooling passage) this Sample coolant liquid can be added into cooling passage from this part, if upper clamping plate is oversized, after mounting not Cooling passage can be exposed, then coolant liquid can not be added thereto, or will cause the location conflicts that pipe is added with coolant liquid.

In some preferred schemes, stand-off mold core includes four corners stand-off mold core, a center stand-off mold core and four A edge stand-off mold core, wherein edge stand-off mold core is greater than the length in perpendicular direction along the length on side where edge stand-off, Edge stand-off mold core is consistent with the shape of edge stand-off, section rectangularity on the whole, and is led on the rectangular quadrangle Circle processing, edge stand-off mold core from top to bottom gradually slope inwardly, and inclined surface is cambered surface, also, in the outer of edge stand-off mold core The a part at end, this inclined surface are cut flat with, and form two sections that interface is V-arrangement, and the outermost end of two sections passes through round and smooth Cambered surface connection, the bottom groove of the position corresponding edge stand-off of cambered surface connection, edge stand-off mold core is equipped in the side of long side With the matched edge protuberance of ribs shape, edge protuberance is extended downward at the 1/2-2/3 of edge stand-off mold core height, edge The outer surface of protrusion has edge bending, and edge folds position has excessive cambered surface, and edge bending is located at the centre of entire protrusion Position；The section of corner stand-off mold core is radiused processing, corner stand-off mould on the whole at square, and on the quadrangle of the square Core from top to bottom gradually slopes inwardly, and inclined surface is cambered surface, also, a part in the outer end of corner stand-off mold core, this inclines Inclined-plane is cut flat with, and forms two sections that interface is V-arrangement, and the outermost end of two sections is connected by round and smooth cambered surface, and cambered surface connects The position connect corresponds to the bottom groove of corner stand-off, corner stand-off mold core quadrangle wherein one jiao be equipped with and ribs shape The protrusion matched, protrusion extend downward at the 1/2-2/3 of edge stand-off mold core height, and the outer surface of corner projection is rolled over corner Curved, corner bending part has excessive cambered surface, and corner bending is located at the intermediate position of entire corner projection.

In some preferred schemes, the upper mold that upper mold heating platen is equipped with heats channel, and the section in upper mold heating channel is Square, and the section side length in upper mold heating channel is not less than the diameter of mold heating tube, in this way, mold heating tube can be upper Mould heats rotation in channel, makes heat transfer more evenly, also, between heating and having centainly between channel itself and mold heating tube Gap, convenient for the replacement of mold heating tube.

In some preferred schemes, the both ends of mold heating tube are equipped with heated coupling, and heated coupling includes directly being arranged Insulation sleeve at mold heating tube both ends, insulation sleeve are equipped with aperture, are equipped with the electricity being fixedly connected with heating tube in insulation sleeve and connect Head, electric connection are equipped with double nuts structure, and double nuts structure includes inside and outside two layers of nut, are equipped with bilayer between inside and outside two layers of nut Gasket, in this way, the spacing between inside and outside two layers of nut can be adjusted by rotating nuts, thus can the double-deck gasket it Between clamp the accessories such as electric wire so that electrical connection is stronger.

Lower die structure includes lower die holder plate, lower die support rod, lower die heating platen and lower die template, the upper end of lower die support rod It is fixedly connected on the lower surface of lower die holder plate, the lower end of lower die support rod is equipped with attachment base, and attachment base is used for and moulding press connects It connects and entire lower die structure is fixed on moulding press, lower die support rod can be integrally formed with attachment base, lower die support rod Upper end can be fixed by forms such as grafting, clampings, or can be integrally formed and be made with lower die holder plate, the top of lower die holder plate Equipped with lower die heating platen, the top of lower die heating platen is equipped with lower die template.

The first lower die, which is equipped with, in some preferred schemes, between lower die heating platen and lower die template heats channel, lower die It is equipped with the second lower die between seat board and lower die heating platen and heats channel, the first lower die heats channel and the second lower die heats channel side To identical but staggered up and down, formation heating channel group, as shown, each heating channel group includes that four heating are led to Road, wherein the two of lower layer heat channel and are respectively positioned in two heating channels on upper layer, that is to say, that the company in every group of heating channel As soon as line constitute it is inverted trapezoidal, in this way, will form one between adjacent heating channel group is just setting trapezoidal, this arrangement Mode makes the arrangement for heating channel be staggered up and down, and comparatively covering surface is wider, more uniformly.

In some preferred schemes, mold heating tube can be arranged by heating in channel, the mold heating in lower die structure The arranged direction of mold heating tube is mutually perpendicular in the arranged direction and upper die structure of pipe.

In some preferred schemes, the section in the first and second lower dies heating channel is square, and square is cut The side length in face is not less than the diameter of mold heating tube, rotates in this way, mold heating tube can heat in channel in upper mold, makes to conduct heat More evenly, also, between heating channel itself and mold heating tube there is certain gap, convenient for the replacement of mold heating tube.

In some preferred schemes, the both ends of mold heating tube are equipped with heated coupling, and heated coupling includes directly being arranged Insulation sleeve at mold heating tube both ends, insulation sleeve are equipped with aperture, are equipped with the electricity being fixedly connected with heating tube in insulation sleeve and connect Head, electric connection are equipped with double nuts structure, and double nuts structure includes inside and outside two layers of nut, are equipped with bilayer between inside and outside two layers of nut Gasket, in this way, the spacing between inside and outside two layers of nut can be adjusted by rotating nuts, thus can the double-deck gasket it Between clamp the accessories such as electric wire so that electrical connection is stronger.

In some preferred schemes, lower die template is equipped with stand-off aperture, and stand-off aperture corresponds to each support of pallet Just there are nine stand-offs, therefore lower die template is equipped with corresponding nine stand-off apertures in foot, such as the pallet of the utility model, Stand-off mold core can pass through these stand-off apertures in molding and stretch out in except lower die template.

In some preferred schemes, stand-off hole shape is consistent with stand-off shape, and the inner wall of aperture is equipped with and stand-off Side wall external surface shape and the consistent step surface of gradient.In some preferred schemes, the stand-off mould of corresponding each stand-off Core passes through corresponding aperture, and the spacing between stand-off mold core and aperture is consistent with the sidewall thickness of stand-off.

In some preferred schemes, a part of the side wall length of stand-off has only been corresponded in lower die template, and it is another Partial stand-off shaped structure is located on lower die heating platen, that is to say, that corresponding nine stand-offs also are provided on lower die heating platen Aperture, also, also be provided on the inner wall of the stand-off aperture on lower die heating platen with the external surface shape of the side wall of stand-off and tiltedly Spend consistent step surface.In these stand-off apertures that a part of stand-off mold core can extend into lower die heating platen in molding, And it is consistent with the sidewall thickness of stand-off with the spacing of these stand-off aperture inner walls.

In some preferred schemes, in the stand-off aperture of lower die template, the size of step surface is from top to bottom gradually become smaller, In the stand-off aperture of lower die heating platen, the size of step surface is from top to bottom gradually become smaller, also, lower die template and lower die hot pressing The gradual change of stand-off aperture in plate should be respectively continuous and connect continuously, respectively continuously refer to lower die template and lower die heat The gradual change of the respective stand-off aperture of pressing plate is continuously, to connect the gradual change of the junction of continuous lower die template and lower die heating platen Be it is continuous, it is so-called continuously to refer to that gradual change degree is consistent, such as upper level and the degree of next stage diminution be consistent, if Encounter and separate positioned at being to connect shape on level-one step surface, then continuously refer to separated place, tomography is not present.

In some preferred schemes, in the bottom of the stand-off aperture of lower die heating platen, equipped with the bottom outer with stand-off Face shape is consistent rectangular or plane of rectangle, and the quadrangle of this plane can be radiused.In some preferred schemes, lower die The shape with the ribs on pallet stand-off is equipped in the stand-off aperture of template and in the stand-off aperture of corresponding lower die heating platen The consistent ribs cavity plate of shape.

In some preferred schemes, more than the ribs bending part of corresponding stand-off part in lower die template internal shaping, Corresponding stand-off ribs bending part part below is in lower die heating plate internal shaping.

In some preferred schemes, the upper surface of lower die template is equipped with recessed for suppressing the reinforcing rib of reinforcing rib lower surface Mould, reinforcing rib cavity plate include the stand-off aperture for connecting corresponding edge stand-off and the stand-off aperture of correspondence corner stand-off adjacent thereto Lateral connection formula reinforcing rib cavity plate, be separately connected the stand-off aperture of each corresponding corner stand-off and the stand-off of corresponding center stand-off Second oblique company of the stand-off aperture of the oblique linking reinforcing rib cavity plate of the first of aperture, the two neighboring corresponding edge stand-off of connection Connect formula reinforcing rib cavity plate, one end connection corresponding edge stand-off stand-off aperture and the other end extends close to corresponding center stand-off The half partition-type cross reinforcing cavity plate and partition-type arc reinforcing rib cavity plate of stand-off tapping.

In some preferred schemes, the first oblique linking reinforcing rib cavity plate is with the wedging position for corresponding to center stand-off It is centrally formed big cross cavity plate, the first oblique linking reinforcing rib cavity plate and the second oblique linking reinforcing rib cavity plate intersect Small cross cavity plate is formed, is formed between the corresponding lateral connection formula reinforcing rib cavity plate of small cross cavity plate and position small Triangle, partition-type arc reinforcing rib cavity plate are arranged in this small delta-shaped region.

Lower surface forming of these reinforcing rib cavity plates for reinforcing rib on pallet, the position that these reinforcing rib cavity plates are recessed Section be all round and smooth cambered surface, the outer surface for the reinforcing rib for being shaped so as to out is also round and smooth cambered surface, can be utmostly The edge stress for mitigating pallet, improves the bearing capacity of pallet, and arc reinforcing rib, can either reinforced tray by the way of partition The bearing capacity at edge, and region of stress concentration can be formed to avoid in pallet stand-off position.

Reinforcing rib punch-pin on reinforcing rib cavity plate and upper mold template in lower die template correspond and in molding wherein Spacing and template consistency of thickness.

In some preferred schemes, the thickness of lower die template is mainly in view of the lower surface for being required to accommodate reinforcing rib Forming, therefore, the thickness of lower die template only need the depth beyond reinforcing rib, but in order to meet certain intensity It is required that usually, the thickness of lower die template is twice of reinforcing rib depth, reinforcing rib depth here refers to from after molding Vertical range of the tray upper surface to reinforcing rib lower surface.

The beneficial effects of the utility model are: the molded tray of the utility model passes through mould using ep-type material as raw material Compression moulding of equipment is pressed, production method is simple, and convenient for production, raw material materials are simple, low in cost, ecological, environmental protective.It is heavier It wants, the molded tray of the utility model improves stand-off structure and reinforcing rib structure on the basis of existing pallet, In the case where having no need to change molded tray production technology, by the design in structure so that the bearing capacity of molded tray has Significantly promoted.

Detailed description of the invention

Fig. 1 is the Facad structure figure of the utility model.

Fig. 2 is the bottom surface structure figure of the utility model.

Fig. 3 is the schematic internal view of the corner stand-off of the utility model.

Fig. 4 is the outside schematic diagram of the corner stand-off of the utility model.

Fig. 5 is the schematic internal view of the edge stand-off of the utility model.

Fig. 6 is the outside schematic diagram of the edge stand-off of the utility model.

Fig. 7 is the schematic internal view of the center stand-off of the utility model.

Fig. 8 is the outside schematic diagram of the center stand-off of the utility model.

Fig. 9 is the schematic diagram of the arc reinforcing rib of the utility model.

Figure 10 is the sectional view of the utility model.

Figure 11 is the partial enlarged view of Figure 10.

Figure 12 is the sectional view on another position of the utility model, shows the cross-section structure of reinforcing rib.

Figure 13 is the schematic diagram of the upper die structure of the utility model.

Figure 14 is the cross-sectional view of the upper die structure of the utility model.

Figure 15 is the top view of the upper die structure of the utility model.

Figure 16 is the bottom view of the upper die structure of the utility model.

Figure 17 is the schematic diagram of the lower die structure of the utility model.

Figure 18 is the side view of the lower die structure of the utility model.

Figure 19 is that the lower die structure of the utility model conceals the top view of lower die template.

The schematic diagram of Figure 20 mold heating tube.

Figure 21 is the end enlarged drawing of mold heating tube.

Figure label: tray body 1, stand-off structure 11, reinforcement structure 12, tray edge 13, corner stand-off 111, edge The both ends 1142 of the junction 1141 of stand-off 112, center stand-off 113, ribs 114, ribs and stand-off side wall inner surfaces, are turned Angle 1143, stand-off side wall 115, stand-off bottom plate 116, step surface 117, longitudinal surface 1171, lateral face 1172, linking reinforcing rib 121, partition-type reinforcing rib 122, half partition-type reinforcing rib 123, four criss-crossing reinforcing ribs groups 124, big criss-crossing reinforcing ribs Group 125, square 126, four small delta-shaped region 127, non-closed small delta-shaped region 128, upper die structure 2, upper die holder Plate 21, upper die plate 22, engaging lug 221 install connecting hole 2211, upper mold template 23, cooling passage 231, wedging position 232, concave area 2321, reinforcing rib punch-pin 233, lateral connection formula reinforcing rib punch-pin 2331, the first oblique linking reinforcing rib is convex Mould 2332, the second oblique linking reinforcing rib punch-pin 2333, half partition-type cross reinforcing punch-pin 2334, partition-type arc are reinforced Muscle punch-pin 2335, upper mold heating platen 24, upper mold heat channel 241, stand-off mold core 25, clamping bump 251, corner stand-off mold core 252, corner projection 2521, corner bending 25211, center stand-off mold core 253, edge stand-off mold core 254, lower die structure 3, lower die Seat board 31, lower die support rod 32, attachment base 321, lower die heating platen 33, stand-off aperture 331, lower die template 34, stand-off aperture 341, reinforcing rib cavity plate 342, lateral connection formula reinforcing rib cavity plate 3421, the first oblique linking reinforcing rib cavity plate 3422, second Oblique linking reinforcing rib cavity plate 3423, half partition-type cross reinforcing cavity plate 3424, partition-type arc reinforcing rib cavity plate 3425, First lower die heating channel 35, the second lower die heating channel 36, heating channel group 37, ribs cavity plate 38, mold heating tube 4, Heated coupling 41, insulation sleeve 411, electric connection 412, nut 413, the double-deck gasket 414.

Specific embodiment

The technical solution of the utility model is further described in detail below in conjunction with attached drawing, it should be noted that real Applying example is the specific descriptions to the implementation of the utility model, is not construed as the restriction to the utility model.

As shown in figs. 1-11, the utility model provides a kind of molded tray, including tray body 1, and tray body 1 is equipped with Stand-off structure 11 and reinforcement structure 12, stand-off structure 11 and reinforcement structure 12 protrude from the lower surface of tray body 1, stand-off knot Structure 11 forms the support construction of tray body 1, and support construction can make somebody a mere figurehead tray body 1, so that the lower surface of tray body There are certain spacing between lower layer's object.If the lower surface of tray body 1 can be straight without the presence of stand-off structure Touch holding plane, or directly contacted with the upper surface of next layer of object and/or pallet, pitch into, stack and waited Cheng Zhong can generate the friction of large area, since greater weight object would generally be carried on pallet, if friction area increases, Not only bad for operation, also the contact surface of pallet can be caused significantly to wear, greatly reduced the pallet service life, meanwhile, There is no the aerial of support construction, may be close together due to weight between the contact surface of pallet, when this state is kept Between it is long, may make the gas between two contact surfaces be drained completely in addition two surfaces between mutually merge and lead Cause, which is close together, to be difficult to separate, and therefore, it is necessary to some aerial constructions are arranged in tray body 1.Aerial construction can satisfy, When the different pallets of same specification are stacked together, some surface between the aerial construction of upper and lower level adjacent trays It is in contact, some surface does not contact, for example, the stand-off of upper tray can be inserted when pallet is stacked together Into the stand-off of lower tray, but it can be only inserted into a part, such as 1/3 position, in this way, can stay to stand-off inside configuration There is certain gap, be unlikely to be bonded completely, can also make between upper and lower supporter disk that there are certain gaps, when preventing pallet storing Excessively fitting or long-time is adjacent between surface.

As shown in Figs. 1-2, tray body 1 is on the whole at square, the four edges of square namely the edge 13 of pallet Be it is isometric, allow pallet by arbitrarily left and right or front-rear direction place, it is non-that this is different from the pallet of the utility model The pallet of tetragonal structure, some pallets may be adjusted on Aspect Ratio, for the pallet that surplus does not wait, usually only It can be pitched in the side of long side or short side into for example, unification is pitched from long side into then for support in a support The direction that stacks of disk itself requires, the different pallet of length and width, pitch into distance it is just different, also, if from short side pitch into, Be likely due to that length of short sides is shorter, be not achieved the fork of fork truck into width requirement, if meeting the fork of length of short sides into width Degree require, then pitch into width just and long side fork into width mismatch, just easily cause long side it is practical pitch it is small into width In long side pallet fork into width, cause long side pitch into when it is unstable.In addition, if be made into circle, from pitch into angle for, Circle is not easy to find and pitched into direction without lateral side, and the edge of round tray is all arc, is pitched with fork truck etc. into mechanism Direction mismatches, and increases and pitches into distance, and this increased partial distance is not again effective distance, is unfavorable for pitching into therefore, Tray body 1 is suitable for being set as square.

As a kind of preferable embodiment, the outer rim of the quadrangle of square is changed into arc, so that the four of tray body 1 The not sharp end in a angle, round and smooth curved end, arc are conducive to forming and quadrangle setting camber, can subtract Few pallet itself even hurts the abrasion of surrounding objects and environment, if the quadrangle of pallet still has sharp position, then very It is possible that can also be hooked into other articles other than abrasion, camber is set, this phenomenon can be prevented.

As shown in figs. 1-11, in the utility model, the reinforcement structure 12 of pallet is mainly arranged in the surface of tray body 1 On, reinforcement structure is mainly shown as that reinforcing rib, reinforcing rib are a kind of groove structures being compressed on tray body surface, from adding For in the connection relationship of strengthening tendons and other structures, reinforcing rib includes linking reinforcing rib 121, partition-type reinforcing rib 122 and half Partition-type reinforcing rib 123, what this was mainly distinguished from whether reinforcing rib is connected to stand-off, what both ends were all connected to stand-off Reinforcing rib be referred to as linking reinforcing rib, both ends all get along well stand-off connection reinforcing rib be referred to as partition-type reinforcing rib, one end with Stand-off connection, and the reinforcing rib that the other end be connected to stand-off is referred to as half partition-type reinforcing rib, by pallet entirety by Power is researched and analysed, and in conjunction with the arrangement of stand-off structure, preferably needs to be simutaneously arranged adding for these three above-mentioned types on a pallet Strengthening tendons, by reinforcing rib come between adjusting tray ontology and stand-off structure as structure and height it is different caused by bearing capacity Different, the mode of the reinforcement according to required for different structure in tray body is different, can select above-mentioned different type respectively Reinforcing rib, can just play poise nut consolidation body stress, improve and pallet entirety bearing capacity and make pallet entirety bearing capacity It is kept substantially consistent effect.

As a kind of preferable embodiment, linking reinforcing rib, partition-type reinforcing rib and half partition-type reinforcing rib can be with It is arranged according to mode shown in Fig. 1.Half partition-type reinforcing rib 123 is equipped between edge stand-off 112 and center stand-off 113, In the present embodiment, one end of half partition-type reinforcing rib 123 is connected to edge stand-off 112, and the other end extends close to center support The position of 113 one side edge of foot is also possible to one end of half partition-type reinforcing rib 123 and the side of center stand-off 113 in practice Connection, the other end extend close on the position of 112 side of edge stand-off, and this selection mainly cooperates the other structures of pallet It is whole to consider, because half partition-type reinforcing rib 123 is primarily adapted for use in a certain stand-off and the connection of reinforcing rib is excessive, be not suitable for again Connection strengthening rib, but the area of its tray body between other stand-offs is larger, and has to the case where arranging reinforcing rib, For example, center stand-off 113 has been connected to four reinforcing ribs in the case of shown in Fig. 1, if remaining position reconnects The opening that reinforcing rib is likely to result in entire center stand-off is reinforced muscle and occupies, and in this case, disconnects center stand-off With the connection of reinforcing rib, and only reinforcing rib is extended near the stand-off of center, do not influence the reinforcement that reinforcing rib can play Effect, while the distribution of the connection between center stand-off and reinforcing rib is reasonably arranged again.In some preferred schemes, these Tray body is divided into the part of four small square by half partition-type reinforcing rib.

It can be seen from the figure that the edge stand-off between corner stand-off 111 and center stand-off 113 and in adjacent side Linking reinforcing rib 121 is equipped between 112, the linking reinforcing rib 121 of this part intersects two-by-two forms four ten Font reinforcing rib group 124, this four criss-crossing reinforcing ribs groups are located in four parts that half partition-type reinforcing rib is separated out, Also, the line between diagonal corner stand-off and center stand-off is located along the same line, and so on the whole, and forms one Entire tray body is divided into four triangles by big criss-crossing reinforcing ribs group 125, this big criss-crossing reinforcing ribs group 125 Part, cross is more stable strengthening form, by the combination of whole grand cross shape and four part crosslets so that Entire tray body is all strengthened the support of structure.Also, it is equipped between edge stand-off 112 and adjacent corner stand-off 111 The four edges edge of pallet is linked as a square 126 by linking reinforcing rib 121, these linking reinforcing ribs 121, this is square Shape 126 makes all quadrangles on tray body edge be contacted into an entirety, the ontology between stand-off and stand-off It is strengthened and is supported in place.

As shown in fig. 1, this small square area is divided into four small by three by the cross-shaped structure in small square Angular domain 127, wherein there are two small 127 domain of delta edge by be located at pallet side on edge stand-off 112 and angle Linking reinforcing rib 121 between portion's stand-off 111 is closed, and forms the small delta-shaped region of closure, and other two small triangle Shape region is then to form non-closed small delta-shaped region 128, phase using half partition-type reinforcing rib 123 as hypotenuse For, non-closed small delta-shaped region is closer to tray center position, and centre one side bearing area is big, and pressure can Uniformly to be spread out, and the stand-off in centre only has center stand-off one, and overall structure is relatively uniform, comparatively Intensity is more stable, and still, the small delta-shaped region of closure is then proximate to the edge of pallet, and edge inherently belongs to Stress is easy the position concentrated, and the stand-off of edge is distributed the position than comparatively dense, especially close to corner, therefore needs Additionally to increase reinforcement structure, be more nearly the bearing capacity of entire pallet unanimously.Therefore, in some preferred schemes, In the small delta-shaped region of closure, equipped with partition-type reinforcing rib, the small delta-shaped region of partition-type reinforcing rib and closure is one by one Corresponding, the main function of partition-type reinforcing rib is the intensity in reinforced tray edge and corner, the small delta being especially closed The intensity in domain.In some preferred modes, partition-type reinforcing rib is the reinforcing rib of arc, and the both ends direction of arc reinforcing rib is closed The both ends of the bevel edge of small delta-shaped region are closed, that is, close the linking reinforcing rib positioned at edge of the small delta-shaped region of the closure Both ends.In the prior art, also there are the situation that similar arc reinforcing rib is set, such as equidistant fork described in background technology Into being also provided with arc reinforcing rib in pallet, but the arc reinforcing rib in background technique is all usually connection stand-off, In fact, being not only arc reinforcing rib, the reinforcing rib of overwhelming majority pallet in the prior art is all connection stand-off, on the one hand This is a kind of traditional design method, on the other hand, for molded tray, if setting one and other regions separate completely Region, then will increase mold process and be opened process difficulty because the molding raw material of isolated area can not be with other regions Connection carries out balanced.And this difficulty is then not present in the technical solution of the utility model, because set by the utility model The thickness of reinforcing rib is consistent with the thickness of pallet itself, and the size that upper/lower die is adjusted according to shape can be realized, and And in the utility model, the section of arc reinforcing rib is up big and down small structure, and the both ends of arc reinforcing rib are also that fillet is excessive, It will not influence die sinking.Also, if also using linking reinforcing rib in closed small delta-shaped region, that is to say, that reinforcing rib sheet Body is connected to corner stand-off, then, as shown, will cause corner stand-off towards being added at this side opening in pallet completely The connection of strengthening tendons occupies, and finds in experiment and actual use, such reinforcement structure, will cause the stress collection at stand-off position In, brittle fracture easily occurs for the junction of stand-off and reinforcing rib, and the intensity for causing pallet integrally to can bear has dropped 10% left side It is right.Therefore, using partition-type reinforcing rib, closed small delta-shaped region is reinforced.In some preferred schemes, partition The both ends of formula reinforcing rib are not more than the width of reinforcing rib itself at a distance from stand-off upper end opening edge, still due to reinforcing rib On the surface for needing to be distributed in tray body as far as possible, therefore, the end of reinforcing rib is still had to close to stand-off position, if Reinforcing rib can not run through, then do not have the booster action to some region.

In some preferred modes, the lateral partition-type reinforcing rib positioned at tray edge is equipped with recess, and recess can be with Play the role of can also be used as the retaining part in pallet handling process itself convenient for molding.

The stand-off structure 11 of the utility model can be divided into corner stand-off 111, edge stand-off 112 and center stand-off 113, and four It is respectively equipped with four corners stand-off 111 on rectangular quadrangle, edge stand-off 112, edge support are respectively equipped on four sides of square The middle position that foot 112 is located at two neighboring corner stand-off 111 is additionally provided with one in the center of square tray body Center stand-off thus forms the relatively stable structure of nine stand-offs, usually, either corner stand-off, side Edge stand-off or center stand-off, their height are all identical, that is to say, that when pallet is laid flat, all stand-off bottoms It can place just in the same plane.

From figure 1 it appears that the global shape of center stand-off 113 is also square, square here refers to, center The size and shape of the base plate configuration of stand-off, the bottom plate of the bottom plate and center stand-off 113 of corner stand-off 111 is all the same, corner support The main distinction of foot 111 and center stand-off 113 is that corner stand-off 111 is equipped with ribs 114, the bottom plate of edge stand-off 112 It is rectangle, and rectangular edges identical with side directions where rectangle are long side, two other side is short side, is held in the palm in order to prevent There is sharp end in disk, and the quadrangle of above-mentioned square and rectangle is all radiused, and why edge stand-off will be set as rectangle, It is that carry is set because the position between edge stand-off and corner stand-off is fork, the width that this fork carry is set is had to and pitched into machine The fork of structure into component cooperate, since corner stand-off can not be changed in length, and if corner stand-off integrally increase, can It can influence whether the intensity of the even entire pallet in stand-off position, and the length of edge stand-off is (i.e. along this side on place side Length) then can suitably it adjust, thus to adjust the spacing between corner stand-off and edge stand-off, and from edge stand-off to two The corner stand-off of side extends or increases, so as to adjust the distance between edge stand-off and corner stand-off, so that pallet itself Fork can meet into distance and pitch into requiring.

The utility model also has restriction to the shape of stand-off, and the side wall of stand-off slopes inwardly, so that under stand-off is formed greatly Small shape, in this way, the size of the outermost end of stand-off will obviously be less than at tray openings for the pallet of same specification Size, upper layer stand-off are inserted into lower layer's stand-off, but since there are wall thickness for pallet, and the oral area of stand-off is larger, because This, the stand-off of upper tray can only be partially inserted into the stand-off of lower tray, without being bonded completely.

As shown in figures 3-8, stand-off position includes stand-off side wall 115 and stand-off bottom plate 116.In the present embodiment, stand-off bottom The outer surface of plate 116 is plane, and two sides of inner surface are tilted to middle part, and form minimum position at middle part.Alternatively, in this implementation In example, minimum position is U-shaped groove, and sometimes, minimum position is also possible to V groove.U-shaped groove for v-depression, It is more wider in the groove width of bottommost, when pallet width is larger, U-shaped groove can be selected, because of pallet width Greatly, comparatively, the size of stand-off also can be big accordingly, in the case where pallet thickness change is little, if still using V-arrangement Groove, it is likely that the stand-off side wall in stand-off bottom groove two sides can be thicker, if stand-off sidewall bottom and other positions Thickness has big difference, and is unfavorable for the uniform force of stand-off entirety, therefore, when the side length of pallet is more than 900mm or stand-off and V-arrangement When maximum width on this consistent direction of the groove width direction of groove is more than 60mm, using U-shaped groove.In some preferred sides In formula, the width of U-shaped groove bottom is no more than the 1/2 of tray bottom width, and U-shaped groove is unsuitable wide, otherwise will affect stand-off The intensity of bottom plate and stand-off bottom plate and stand-off side wall junction.In some preferred schemes, the direction of groove and pallet The direction of one of side is identical.In some preferred schemes, the side of one of side in the direction and pallet of groove To angled, such as 15 °, 30 °, 45 ° or 60 °, it is also possible to other angles, this angle can be according to stand-off depth The tilt angle of degree and stand-off side wall is adjusted.In some preferred modes, when the tilt angle of stand-off side wall is super When crossing 30 °, can with the gradient of appropriate adjustment groove because, if the tilt angle of pallet side wall is big, suffered by pallet side wall Lateral compression and shear stress will become larger, when the inner surface of stand-off bottom plate is groove, the inner surface of stand-off side wall is inevitable With with the matched inclined-plane in groove two sides, the power that stand-off inner surface receives at this time will be fully distributed on inclined-plane, to make At the stress of stand-off side wall concentrates on having bevelled two sides, and then stress is less even without will cause stand-off for two sides in addition The discontinuity at position, if suitably changing the groove direction of stand-off baseplate inner surface, inclined-plane can be along groove direction Change and be distorted, in this case, can all be afforded everywhere in stand-off side wall and carry out cross component force, then the stress at stand-off position It is just comparatively relatively uniform, it will not that there is a situation where local pressures be excessive.In some preferred modes, in same arrangement The direction of groove in different stand-offs can be different, allow the diversity of distribution of force more preferable in this way, stress is avoided to concentrate, for example, The groove direction of corner stand-off can be oblique consistent with quadrangle, and the groove direction of both sides of the edge stand-off can be on the contrary, to make Stress is obtained to be evenly distributed in all directions.

Above-mentioned floor structure is conducive to the molding of upper mold, still, in actual production, sometimes, can also use other The stand-off bottom plate of form, such as the inner surface and the outer surface of stand-off bottom plate 116 is plane.Alternatively, the appearance of stand-off bottom plate 116 Face is plane, and inner surface has certain gradient.

In some preferable embodiments, the thickness of stand-off bottom plate 116 and the consistency of thickness of tray body 1 are held in the palm here The thickness of sole should be the minimum thickness of stand-off bottom plate, namely eliminate the thickness at groove position, remaining stand-off bottom plate Thickness.In this embodiment, as shown in Figure 10, the thickness of stand-off bottom plate 116 is not less than the thickness of tray body 1.Stand-off bottom plate is The position that entire pallet upper stress and pressure are concentrated is born, therefore, the thickness of stand-off bottom plate has to be guaranteed, and can protect Demonstrate,prove the integrated support intensity of pallet.Even it is also possible that stand-off bottom plate and the thickness of stand-off side wall junction are greater than stand-off bottom plate Thickness, the junction of stand-off bottom plate and stand-off side wall, due to being bent in structure, bending place is usually that stress is concentrated Place, it is therefore desirable to which bigger thickness carrys out proof strength.In this embodiment, the junction of stand-off bottom plate 116 and stand-off side wall 115 Inner wall is round and smooth excessive cambered surface, and the stress that round and smooth excessive cambered surface can offset a part of bending part is concentrated.

As shown in Fig. 2,4,6,8, step surface 117 is set, together due to stackable pallet on the outer surface of stand-off side wall 115 When, the stand-off of upper tray is inserted into the stand-off of lower tray, therefore, step surface is arranged, can reduce upper and lower level The contact surface of stand-off, to reduce contact friction when upper and lower level pallet is stacked, in addition, continuous step surface can be in stand-off side wall Outer surface on form rough shape, necessarily there is peak shape and paddy shape, paddy shape concaves between rough shape Into recessed paddy shape can form the ventilative gap between pallet, in this way, weight is big, will not go out even if the quantity stacked is more Now because squeezing so that the gap between pallet becomes smaller up and down or even disappearance fits together so as to cause contact surface and is difficult to separate The case where.As shown in Fig. 4,6,8, the outer rim of step surface is processed to round and smooth cambered surface, just will not be when stacking to lower tray Stand-off inner wall cause very big abrasion.

The thickness of stand-off side wall 115 and the thickness of tray body 1 are identical.Alternatively, 115 thickness of stand-off side wall is less than support The thickness of disk ontology 1, still, the setting of step surface 117 protrude from the original thickness of stand-off side wall 115, also, step surface 117 It is not less than the thickness of tray body 1 with the integral thickness of stand-off side wall 115, step surface 117 can increase support to a certain extent The thickness of foot side wall 115, therefore, the thickness for removing the stand-off side wall 115 of step surface part can suitably reduce.

As shown in figure 11, step surface 117 includes longitudinal surface 1171 and lateral face 1172, and longitudinal surface 1171 is along tray body Short transverse arrangement, lateral face 1172 connect two neighboring longitudinal surface, or one longitudinal surface 1171 of connection and stand-off side wall 115 Outer surface, it is continuous by this longitudinal surface+transverse direction face+longitudinal surface or longitudinal surface+transverse direction face+stand-off side wall+longitudinal surface Continuous connection type forms continuously step surface in the outer surface of stand-off side wall.

What is had between longitudinal surface 1171 and the short transverse of tray body 1 is no more than 5 ° of tilt angles, this inclination angle It must be consistent with the tilt angle of the inner surface of stand-off side wall for spending, and longitudinal surface has certain tilt angle, can be formed Grafting guiding, reduces hard contact when grafting, convenient for the grafting between upper layer stand-off and lower layer's stand-off.

Lateral face 1172 is the arcwall face heaved outward, as previously mentioned, abrasion when arcwall face can reduce grafting, and And since stand-off is the exposed component of pallet, the outer wall of stand-off side wall is easy to be in contact with other objects in use Collision, if having sharp position on outer wall, it is easy to cause to damage to other objects in use, therefore, lateral face is set Requirement can be more conform with by being set to arcwall face.

The width in lateral face 1172 is related with the length of the tilt angle of stand-off side wall 115 and longitudinal surface, for example, at this In embodiment, in a stand-off height, 10-12 longitudinal surface is arranged, it is corresponding also to arrange that 10 1172,11, lateral faces are vertical To face 1171, the equal length of longitudinal surface 1171, the length and radian in lateral face 1172 are also identical, and the quantity of longitudinal surface is fewer, The tilt angle of stand-off side wall is bigger, then the size in lateral face is bigger, if the tilt angle of longitudinal surface is big, the ruler in lateral face It is very little accordingly to reduce, to reach a best stress proportion.For example, in one embodiment, arranging 10 longitudinal surfaces and 10 A transverse direction face, the tilt angle of longitudinal surface are 3 °, and the radian diameter in lateral face 1172 is equivalent to the 1/ of the length of longitudinal surface 1171 , at this time be best stress proportion a kind of embodiment, the stress of stand-off side wall is the most uniform at this time, and with pallet sheet Other position stress of body are almost the same, and local fracture phenomenon will not occur.

As shown in figure 11, second step surface calculated since stand-off top only has lateral face or longitudinal surface, and this Only transverse direction face or longitudinal surface are a raised cambered surfaces slightly outwards, because the setting position of first order step is being held in the palm just The connection bending part of foot and tray body, the second level step being connected with first order step are set as excessive cambered surface, can be effective The stress for alleviating bending part is concentrated, so that the connection of bending part and stand-off side wall is excessively more smooth.

As shown in Fig. 4,6, the one of side wall or side of corner stand-off and edge stand-off are equipped with ribs 114, Ribs 114 extends downward into stand-off medium position, inner surface of the ribs 114 in stand-off side wall 115 from the opening of stand-off Form inside recessed portion, and form outside protruding portion in the outer surface of stand-off side wall 115, the effect of ribs 114 be for Each edge unbalance stress that balance corner stand-off and edge stand-off may cause since the junction with reinforcing rib is unevenly distributed The phenomenon that, for example, by taking the stand-off of corner as an example, the upper end opening of corner stand-off be in towards on an angle of center with reinforcement Muscle connection, two sides adjacent with this angle are also connected to reinforcing rib, so that there are three directions for the upper end opening of this stand-off On position inside pallet, there is the connection structure with reinforcing rib, this connection structure to be open at stand-off upper end three, necessarily makes Three it is in that be under pressure be that the distribution of the compressive stress generated and other positions are different, and this is held in the palm all in this at three at this The one side of something of foot on the inside of pallet, at this point, can be balanced in this stand-off towards ribs is arranged on an angle on the outside of pallet Connection is formed by opening at above-mentioned three, so that the opening distribution of pallet on the whole is comparatively more average, is unlikely to When being under pressure, different orientation shows entirely different bearing capacity.For another example, as edge stand-off, towards pallet It is outermost to be equipped with ribs on one side, it is for other edges with edge stand-off upper end opening and to reinforce as previously described Muscle connection is formed by opening to carry out stress balance.Either corner stand-off or edge stand-off, due to itself and reinforcing rib Connection is with respect to being evenly distributed, and therefore, ribs is also normally positioned at the middle part at corner or edge.Correspondingly, in Heart stand-off does not need setting ribs since it is uniformly distributed along being open with the connection of reinforcing rib.

As shown in Fig. 3,5, the upper opening of ribs 114 is greater than the lower openings of ribs, on the one hand, this structure is set Meter is matched with the shape of stand-off itself, because stand-off itself is also that upper opening is greater than base plate size, on the other hand, on Small size is more conform with the direction of stress transmitting under big, is more advantageous to the pressure-bearing at stand-off position.

As shown in Fig. 3,5, the both ends 1142 of the junction 1141 of the inner surface of ribs 114 and stand-off side wall 115 are formed Excessive fillet, the low side of ribs and the somewhere of stand-off inner wall must be connections, this requires an excessive shape, lead to For often, junction 1141 is lines, but can be easy to produce shape stress using this hardwired form of lines, in order to slow It solves this stress to concentrate, the both ends of junction can be used into rounded shapes.In some preferred embodiments, ribs 1141 Entire bottom all use rounded shapes excessive, without rectilinear strip, in practice it has proved that, it is excessive using rounded shapes, to stand-off Shape stress caused by side wall position is minimum, but is all only suitable for the lesser stand-off position of size, such as hypocarp using fillet The size of foot position is larger, cannot use fillet entirely, will cause expansion length in this way, therefore, biggish in stand-off spot size In the case of, the combination of lines and fillet can be used.

As shown in Fig. 4,6, the outer wall of ribs 114 has turning 1143, and the external of turning 1143 forms excessive cambered surface, phase For, the intilted angle in position of the ribs at 1143 or more turning is small, and the portion of the ribs below of turning 1143 The intilted angle in position is big, therefore, has certain angle, turning between part and turning part below more than turning As the connection between this two sections and excessively, the height at turning position is not less than the height of level-one step surface at position, is not more than The height in two-stage step face, turning position need certain size, and otherwise excessive position is insecure, but can not be excessive, Otherwise can have an impact to the global shape of ribs, and not have effect.It can be seen from the figure that the outer wall table of ribs 114 Face is smooth, and the grafting for being on the one hand to stand-off position when upper and lower level stackable pallet is convenient, on the other hand, the presence of ribs, Direction limitation and guidance can be played when stacking to upper and lower level pallet, so that whole more whole stackable pallet is stored together when Together.In some preferred schemes, the depth of ribs, 1/2 greater than stand-off depth and 2/3 less than stand-off depth.

To the pallet (test data in the pallet (being referred to as pallet A in test data) and background technique of the utility model In referred to as pallet B) choose different position respectively and carry out compression test.

Experiment position includes: (position a), edge stand-off to be referred to as in test data (in test data referred to as in the middle part of pallet (position c) is referred to as in test data for position b) and corner stand-off.

Subjects include: A100, pallet, and pallet B100 is only.Average value is calculated according to the test data of each pallet to make For final test result.

The average bearing capacity of test result, as shown in the table:

Compression test 1: the critical static load (kg) of fracture or deformation

Pallet model	Position a	Position b	Position c
				Pallet A	6070	6105	6190
Pallet B	6075	4650	3540

Compression test 2: the critical dynamic load (kg) of fracture or deformation

Pallet model	Position a	Position b	Position c
				Pallet A	4220	4120	4315
Pallet B	4210	3320	2980

From test data as can be seen that either dynamically still in the static case, pallet A and pallet B are in Between the performance at position (position a) almost approach, but in the position (portion c at the position of edge stand-off (position b) and corner stand-off Position) bearing capacity just have obviously difference, it may be said that differed an order of magnitude.In test it was found that for Pallet B, namely transformation before pallet, no matter with carrying increase, that usually deformation occurs first is position c, in portion In separating tests, position c may also be directly broken, and had more than 80 pallets and appeared in arc at the fracture and deformation of position c and add The junction of strengthening tendons and stand-off opening.Position b is slightly stronger than the bearing capacity of position c, but usually position c deformation or fracture Afterwards, and then position b will deform or be broken.More than 70 pallets appear in ribs in the fracture and deformation of position b With the junction of stand-off inner wall.It can be seen that design of the pallet B at the two positions is implicitly present in unreasonable place, and pass through After the improvement of the utility model, be improved to the performance of this part, there are the problem of be resolved.

As seen in figs. 13 -20, the utility model provides a kind of mold for preparing above-mentioned molded tray, including upper die structure 2 With lower die structure 3, upper die structure 2 and lower die structure 3 are opened and are molded under the action of moulding press thus by pallet compression moulding.

Upper die structure 2 includes upper clamping plate 21, upper die plate 22, upper mold template 23 and upper mold heating platen 24, upper clamping plate 21 with moulding press for connecting and entire upper die structure 2 being fixed on moulding press, and the upper surface of upper clamping plate 21 connects molding The installing component (not shown) of machine, the lower surface of upper clamping plate 21 are fixedly connected with upper mold heating platen 24, upper mold heating platen 24 Interior to be equipped with more equidirectional uniformly distributed mold heating tubes 4, the lower surface of upper mold heating platen 24 is fixedly connected with upper mold template 22, upper mold The periphery of template 22 and upper mold heating platen 24 is arranged with upper die plate 23, and the lower surface of upper mold template 22 can be by way of grafting Stand-off mold core 25 is installed, the upper surface of upper die plate 23 is equipped with cooling passage 231, and the position setting of cooling passage 231 exists The height of the side of upper mold heating platen 24, cooling passage 231 can be flushed with the height of upper mold heating platen 24, because of cooling master It to be cooled down for upper mold heating platen 24.

As shown in Fig. 2, the top of stand-off mold core 25 is equipped with clamping bump 251, the lower surface of upper mold template 23, which is equipped with, to be used for The wedging position 232 connecting with stand-off mold core 25, wedging position 232 protrude from the lower surface of upper mold template 22, also, clamping portion The consistent outer surface of stand-off inner wall shape (side) of position 232 having with corresponding position, wedging position 232 also can in molding Side as a part of forming, therefore wedging position is also required to have suitable shape, and the middle part of wedging position 232 is equipped with With the matched concave area 2321 of clamping bump 251, stand-off mold core 25 passes through the cooperation of clamping bump 251 and concave area 2321, can It is releasably mounted in upper mold template 22, also, after the installation of stand-off mold core 25, the outer surface of outer surface and clamping portion 232 Continuous smooth surface is formed, the inner surface configuration of the side wall of stand-off corresponding to the continuous smooth surface and the stand-off mold core Unanimously.

As shown in figure 16, part of the lower surface of upper mold template 23 other than wedging position is equipped with for suppressing reinforcing rib The reinforcing rib punch-pin 233 on surface, reinforcing rib punch-pin 233 include the wedging position and pair adjacent thereto of connection corresponding edge stand-off It answers the lateral connection formula reinforcing rib punch-pin 2331 of the wedging position of corner stand-off, be separately connected the clamping of each corresponding corner stand-off First oblique linking reinforcing rib punch-pin 2332 of the wedging position of position and corresponding center stand-off, the two neighboring corresponding sides of connection The wedging position of the oblique linking reinforcing rib punch-pin 2333 of the second of the wedging position of edge stand-off, one end connection corresponding edge stand-off And the other end extend close to half partition-type cross reinforcing punch-pin 2334 at the wedging position of corresponding center stand-off and every Disconnected formula arc reinforcing rib punch-pin 2235.

First oblique linking reinforcing rib punch-pin 2332 forms big ten centered on the wedging position for corresponding to center stand-off Font punch-pin, the first oblique linking reinforcing rib punch-pin and the second oblique linking reinforcing rib punch-pin intersect to form small cross Punch-pin forms small triangle between the corresponding lateral connection formula reinforcing rib punch-pin 2331 of small cross punch-pin and position, every Disconnected formula arc reinforcing rib punch-pin setting 2335 is in this small delta-shaped region.

Upper surface forming of these reinforcing rib punch-pin for reinforcing rib on pallet, the position that these reinforcing rib punch-pin are protruded Section be all round and smooth cambered surface, the inner surface for the reinforcing rib for being shaped so as to out is also round and smooth cambered surface, can be utmostly The edge stress for mitigating pallet, improves the bearing capacity of pallet, and arc reinforcing rib, can either reinforced tray by the way of partition The bearing capacity at edge, and region of stress concentration can be formed to avoid in pallet stand-off position.

The two sides of upper die plate 22 are equipped with engaging lug 221, and engaging lug 221 is symmetrically dispersed in the side of 22 two sides of upper die plate Edge, engaging lug 221 and upper die plate 22 are integrally formed, and engaging lug 221 is equipped with installation connecting hole 2211, upper clamping plate 21 and upper Die-cushion plate 22 is fixedly connected by the way that engaging lug 221 is removable.For being fixed conveniently for engaging lug 221, upper clamping plate 21 with connect The outer edge of the two sides of 221 same direction of ear and the outer edge of engaging lug 221 flush, and the other two sides of upper clamping plate 21 are located at upper Within the scope of die-cushion plate 22, and the position satisfaction of the two sides should cover upper mold heating platen 25, expose cooling passage again 231(is at least a part of cooling passage) coolant liquid can be added into cooling passage 231 from this part in this way, If upper clamping plate 21 is oversized, cooling passage 231 can not be exposed after mounting, then cooling can not be added thereto Liquid, or will cause the location conflicts that pipe is added with coolant liquid.

As shown in figure 16, stand-off mold core 25 includes 252, center stand-off mold cores 253 and four of four corners stand-off mold core A edge stand-off mold core 254, wherein length of the edge stand-off mold core 254 along side where edge stand-off is greater than perpendicular direction Length, edge stand-off mold core 254 is consistent with the shape of edge stand-off, section rectangularity on the whole, and this is rectangular Processing is radiused on quadrangle, edge stand-off mold core 254 from top to bottom gradually slopes inwardly, and inclined surface is cambered surface, also, at edge A part of the outer end of stand-off mold core 254, this inclined surface are cut flat with, and form two sections that interface is V-arrangement, two sections Outermost end is connected by round and smooth cambered surface, and the bottom groove of the position corresponding edge stand-off of cambered surface connection, edge stand-off mold core exists The side of long side, which is equipped with, extends downward into edge stand-off mold core height with the matched edge protuberance of ribs shape, edge protuberance Place, the outer surface of edge protuberance have edge bending, and edge folds position has excessive cambered surface, and edge bending is located at The intermediate position of entire protrusion；The section of corner stand-off mold core is radiused on the quadrangle of the square on the whole at square Processing, corner stand-off mold core 252 from top to bottom gradually slope inwardly, and inclined surface is cambered surface, also, in the outer of corner stand-off mold core The a part at end, this inclined surface are cut flat with, and form two sections that interface is V-arrangement, and the outermost end of two sections passes through round and smooth Cambered surface connection, the position of cambered surface connection corresponds to the bottom groove of corner stand-off, corner stand-off mold core 252 in quadrangle wherein one Angle, which is equipped with, extends downward into edge stand-off mold core 254 with the matched corner projection 2521 of 114 shape of ribs, corner projection 2521 At the 1/2-2/3 of height, the outer surface of corner projection 2521 has corner bending 25211, and bending 25211 position in corner had Cambered surface is spent, corner bending 25211 is located at the intermediate position of entire corner projection 2521.

The upper mold that upper mold heating platen 24 is equipped with heats channel 241, and the section that upper mold heats channel 241 is square, and on The section side length that mould heats channel 241 is not less than the diameter of mold heating tube 4, in this way, mold heating tube 4 can be heated in upper mold Rotation in channel 241, makes heat transfer more evenly, also, upper mold heats channel 241 itself between mold heating tube 4 with certain Gap, convenient for the replacement of mold heating tube 4.

As shown in figures 20-21, the both ends of mold heating tube 4 are equipped with heated coupling 41, and heated coupling 41 includes directly being arranged Insulation sleeve 411 at 4 both ends of mold heating tube, insulation sleeve 411 are equipped with aperture, are equipped with and mold heating tube 4 in insulation sleeve 411 The electric connection 412 being fixedly connected, electric connection 412 are equipped with double nuts structure, and double nuts structure includes inside and outside two layers of nut 413, The double-deck gasket 414 is equipped between inside and outside two layers of nut 413, the position of more than 412 nut 413 of electric connection connection gets on the bus and has screw thread, this Sample, the spacing between inside and outside two layers of nut 413 can be adjusted by rotating nuts, thus can the double-deck gasket 414 it Between clamp the accessories such as electric wire so that electrical connection is stronger.

As shown in figure 17, lower die structure 3 includes lower die holder plate 31, lower die support rod 32, lower die heating platen 33 and lower die mould Plate 34, the upper end of lower die support rod 32 are fixedly connected on the lower surface of lower die holder plate 31, and the lower end of lower die support rod 32 is equipped with Attachment base 321, attachment base 321 with moulding press for connecting and entire lower die structure being fixed on moulding press, lower die support rod 32 can be integrally formed with attachment base 321, and the upper end of lower die support rod 32 can be fixed on lower die by forms such as grafting, clampings On seat board 31, or it can also be integrally formed and make with lower die holder plate 31, the top of lower die holder plate 31 is equipped with lower die heating platen 33, The top of lower die heating platen 33 is equipped with lower die template 34.

As shown in figure 18, it is equipped with the first lower die between lower die heating platen 33 and lower die template 34 and heats channel 35, lower die holder It is equipped with the second lower die between plate 31 and lower die heating platen 33 and heats channel 36, the first lower die heats channel 35 and the heating of the second lower die 36 direction of channel is identical but staggered up and down, forms heating channel group 37, as shown, each heating channel group 37 is wrapped Four heating channels are included, wherein the two of lower layer heat channel and are respectively positioned in two heating channels on upper layer, that is to say, that every group As soon as the line in heating channel constitutes it is inverted trapezoidal, in this way, adjacent heat will form one and just set between the group of channel Trapezoidal, this arrangement mode makes the arrangement for heating channel be staggered up and down, and comparatively covering surface is wider, more uniformly.

As upper die structure, it can be arranged in the first lower die heating channel and the second lower die heating channel of lower die structure The model of mold heating tube 4, mold heating tube 4 can use model identical with upper die structure, and the mold in lower die structure adds The arranged direction of heat pipe 4 and the arranged direction of mold heating tube 4 in upper die structure 2 are mutually perpendicular to, in some cases, lower die knot The arranged direction of the arranged direction of mold heating tube 4 in structure and mold heating tube 4 in upper die structure 2 is also possible to consistent.

As shown in figure 18, the section in the first and second lower dies heating channel is square, and the side length of cubic tee section Not less than the diameter of mold heating tube, is rotated in this way, mold heating tube can heat in channel in upper mold, makes heat transfer more evenly, Also, heating has certain gap between channel itself and mold heating tube, convenient for the replacement of mold heating tube, in some feelings Under condition, channel can also be heated or using cross sectional shape identical with mold heating tube.

As shown in figures 20-21, the both ends of mold heating tube 4 are equipped with heated coupling 41, and heated coupling 41 includes directly being arranged Insulation sleeve 411 at 4 both ends of mold heating tube, insulation sleeve are equipped with aperture, are equipped in insulation sleeve 411 solid with mold heating tube 4 Surely the electric connection 412 connected, electric connection 412 are equipped with double nuts structure, and double nuts structure includes inside and outside two layers of nut 413, interior The double-deck gasket 414 is equipped between outer two layers of nut 413, in this way, the spacing between inside and outside two layers of nut 413 can be by rotating spiral shell Mother 413 is adjusted, thus can clamp the accessories such as electric wire between the double-deck gasket 414, so that being electrically connected stronger.

Lower die template 34 is equipped with stand-off aperture 341, and stand-off aperture 341 corresponds to each stand-off of pallet, such as this reality With in novel pallet just have nine stand-offs, therefore lower die template 34 be equipped with corresponding nine stand-off apertures 341, stand-off mould Core 25 can pass through these stand-off apertures 341 in molding and stretch out in except lower die template 34.

341 shape of stand-off aperture is consistent with stand-off shape, and the inner wall of stand-off aperture 341 is equipped with outer with the side wall of stand-off Surface shape and the consistent step surface of gradient.The stand-off mold core 25 of corresponding each stand-off passes through corresponding stand-off aperture 341, stand-off The consistency of thickness of spacing and stand-off side wall 115 between mold core 25 and stand-off aperture 341.

A part of the length of stand-off side wall 115 has only been corresponded in lower die template 34, and the stand-off of another part shapes Structure is located on lower die heating platen 33, that is to say, that corresponding nine stand-off apertures 331 also is provided on lower die heating platen 33, such as Shown in Figure 19, also, it also is provided on the inner wall of the stand-off aperture 331 on lower die heating platen 33 outer surface with the side wall of stand-off Shape and the consistent step surface of gradient.A part of stand-off mold core 25 can extend into these of lower die heating platen 33 in molding In stand-off aperture 331, and the consistency of thickness with the spacing of these 331 inner walls of stand-off aperture and stand-off side wall 115.

In the stand-off aperture 341 of lower die template 34, the size of step surface is from top to bottom gradually become smaller, in lower die heating platen 33 Stand-off aperture 331 in, the size of step surface from top to bottom gradually becomes smaller, also, in lower die template 34 and lower die heating platen 33 The gradual change of stand-off aperture should be respectively continuous and connect continuous, respectively continuously refer to lower die template and lower die heating platen The gradual change of respective stand-off aperture be it is continuous, the gradual change for connecting the junction of continuous lower die template and lower die heating platen is also to connect It is continuous, it is so-called continuously to refer to that gradual change degree is consistent, such as the degree that upper level and next stage reduce is consistent, if encountered Separate positioned at being to connect shape on level-one step surface, then continuously refer to separated place, tomography is not present.

In the bottom of the stand-off aperture of lower die heating platen 33, equipped with the bottom outer surface shape of stand-off it is consistent rectangular or The quadrangle of the plane of rectangle, this plane can be radiused, and in the stand-off aperture 341 of lower die template 34 and corresponding lower die is hot The consistent ribs cavity plate 38 of shape with the ribs on pallet stand-off is equipped in the stand-off aperture 331 of pressing plate 33.

In the present embodiment, at the turning 1143 of the ribs of corresponding stand-off more than part in lower die template 34 at Shape, part below is in 33 internal shaping of lower die heating plate at the turning 1143 of corresponding stand-off ribs.

The upper surface of lower die template 34 is equipped with the reinforcing rib cavity plate 342 for suppressing reinforcing rib lower surface, reinforcing rib cavity plate 342 include the lateral connection of the stand-off aperture for the stand-off aperture and correspondence corner stand-off adjacent thereto for connecting corresponding edge stand-off Formula reinforcing rib cavity plate 3421, the stand-off aperture for being separately connected each corresponding corner stand-off and the stand-off aperture of corresponding center stand-off Second oblique connection of the stand-off aperture of the first oblique linking reinforcing rib cavity plate 3422, the two neighboring corresponding edge stand-off of connection Formula reinforcing rib cavity plate 3423, one end connects the stand-off aperture of corresponding edge stand-off and the other end extends close to corresponding center stand-off Stand-off tapping half partition-type cross reinforcing cavity plate 3424 and partition-type arc reinforcing rib cavity plate 3425.

First oblique linking reinforcing rib cavity plate 3422 forms big ten centered on the wedging position for corresponding to center stand-off Font cavity plate, the first oblique linking reinforcing rib cavity plate 3422 and the second oblique linking reinforcing rib cavity plate 3423 intersect to form small Cross cavity plate, formed between the corresponding lateral connection formula reinforcing rib cavity plate 3421 of small cross cavity plate and position small by three Angular, partition-type arc reinforcing rib cavity plate 3425 is arranged in this small delta-shaped region.

Lower surface forming of these reinforcing rib cavity plates for reinforcing rib on pallet, the position that these reinforcing rib cavity plates are recessed Section be all round and smooth cambered surface, the outer surface for the reinforcing rib for being shaped so as to out is also round and smooth cambered surface, can be utmostly The edge stress for mitigating pallet, improves the bearing capacity of pallet, and arc reinforcing rib, can either reinforced tray by the way of partition The bearing capacity at edge, and region of stress concentration can be formed to avoid in pallet stand-off position.

Reinforcing rib punch-pin on reinforcing rib cavity plate and upper mold template in lower die template correspond and in molding wherein Spacing and template consistency of thickness.

In some preferred schemes, the thickness of lower die template is mainly in view of the lower surface for being required to accommodate reinforcing rib Forming, therefore, the thickness of lower die template only need the depth beyond reinforcing rib, but in order to meet certain intensity It is required that usually, the thickness of lower die template is twice of reinforcing rib depth, reinforcing rib depth here refers to from after molding Vertical range of the tray upper surface to reinforcing rib lower surface.

Claims (10)

1. a kind of stand-off structure of molded tray, molded tray is at square, characterized in that stand-off structure include corner stand-off, The quadrangle of molded tray is arranged in edge stand-off and center stand-off, corner stand-off, and the edge of molded tray is arranged in edge stand-off The center of molded tray is arranged in middle part, center stand-off.

2. a kind of stand-off structure of molded tray according to claim 1, characterized in that corner stand-off, edge stand-off and The height of center stand-off is identical, so that stand-off bottom all when pallet is laid flat can be in the same plane.

3. a kind of stand-off structure of molded tray according to claim 1, characterized in that center stand-off and quadrangle stand-off Bottom plate is at square.

4. a kind of stand-off structure of molded tray according to claim 1, characterized in that the bottom plate of edge stand-off is at square Shape.

5. a kind of stand-off structure of molded tray according to claim 1, characterized in that the side wall of each stand-off is lean-in Tiltedly, so that each stand-off is respectively formed up big and down small shape.

6. a kind of stand-off structure of molded tray according to claim 1, characterized in that stand-off position includes stand-off side wall With stand-off bottom plate.

7. a kind of stand-off structure of molded tray according to claim 6, characterized in that the outer surface of stand-off bottom plate is flat Two sides in face, inner surface are tilted to middle part, and form minimum position at middle part.

8. a kind of stand-off structure of molded tray according to claim 6, characterized in that set on the outer surface of stand-off side wall Set step surface.

9. a kind of stand-off structure of molded tray according to claim 8, characterized in that step surface includes longitudinal surface and cross To face, longitudinal surface is arranged along the short transverse of tray body, and lateral face connects two neighboring longitudinal surface, or one longitudinal direction of connection Face and stand-off side wall, pass through this longitudinal surface+transverse direction face+longitudinal surface or longitudinal surface+transverse direction face+stand-off side wall+longitudinal surface Continuously connection type forms continuously step surface in the outer surface of stand-off side wall.

10. a kind of stand-off structure of molded tray according to claim 8, characterized in that corner stand-off and edge stand-off One of side wall or side be equipped with ribs, ribs extends downward into position in stand-off from the opening of stand-off It sets, ribs forms inside recessed portion in the inner surface of stand-off side wall, and forms outside dash forward in the outer surface of stand-off side wall Portion out.