CN114407299A

CN114407299A - Forming die of many draw-in grooves work piece

Info

Publication number: CN114407299A
Application number: CN202210216778.0A
Authority: CN
Inventors: 王声杭; 蔡勇
Original assignee: Ningbo Goode Molding Co ltd
Current assignee: Ningbo Goode Molding Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-04-29
Anticipated expiration: 2042-03-07
Also published as: CN114407299B

Abstract

The application discloses a forming die for a multi-clamping-groove workpiece, which comprises a fixed die and a movable die, wherein a first demoulding assembly is arranged on the fixed die and comprises a first sliding block, a second sliding block and a third sliding block, the first sliding block is fixedly connected to the fixed die, the second sliding block is slidably connected to the first sliding block, the third sliding block is slidably connected to the second sliding block, and the third sliding block is suitable for forming a first clamping groove of the workpiece; the fixed die is provided with a second demoulding component which is suitable for forming a second clamping groove of the workpiece; when the mold is closed, the third slide block abuts against the first clamping groove, and the second demolding component abuts against the second clamping groove; when the mold is opened, the third slide block is separated from the first clamping groove, and the second demolding assembly is separated from the second clamping groove; an included angle gamma is formed between the demolding direction of the first clamping groove and the mold opening direction of the movable mold, wherein the gamma is more than 0 degree and less than 90 degrees. The mold can reduce production cost and production cycle.

Description

Forming die of many draw-in grooves work piece

Technical Field

The application relates to the field of dies, in particular to a forming die for a multi-clamping-groove workpiece.

Background

At present, a plastic mold is often matched with an injection molding machine for use so as to produce different products, in the field of automobile parts, because the appearance of the plastic product is not limited by a processing technology basically and the quality of the plastic product is better and better, the trend of 'plastic replacing steel' is more and more obvious, and particularly for some products with complex shapes, an iron material is used for production by a processing center, the efficiency is lower, the cost is higher, and therefore, the plastic mold is generally replaced by the plastic product.

However, for some multi-slot plastic products, especially products with different slot angles and opening and closing mold angles, the high production cost is a problem to be solved by those skilled in the art.

Disclosure of Invention

An object of this application is to provide a compact structure, small, the forming die of the multiple slot work piece with low costs.

Another object of the present application is to provide a first stripper assembly of a forming die for a multi-slot workpiece, which is compact, small, and low in cost.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows:

a forming die for a multi-clamping-groove workpiece comprises a fixed die and a movable die and is characterized in that a first demolding assembly is arranged on the fixed die and comprises a first sliding block, a second sliding block and a third sliding block, the first sliding block is fixedly connected to the fixed die, the second sliding block is slidably connected to the first sliding block, the third sliding block is slidably connected to the second sliding block, and the third sliding block is suitable for forming a first clamping groove of the workpiece; a second demolding assembly is arranged on the fixed mold and is suitable for forming a second clamping groove of the workpiece;

when the mold is closed, the third slide block abuts against the first clamping groove, and the second demolding component abuts against the second clamping groove; when the mold is opened, the third sliding block is separated from the first clamping groove, and the second demolding assembly is separated from the second clamping groove; an included angle gamma is formed between the demolding direction of the first clamping groove and the mold opening direction of the movable mold, wherein the gamma is more than 0 degree and less than 90 degrees; the demolding direction of the second clamping groove is the same as the mold opening direction of the movable mold.

Traditional plastic mould, to many draw-in grooves, especially the different plastic mould of draw-in groove direction, the mould design thinking is for using the deepest draw-in groove as first draw-in groove to the drawing of patterns direction that makes first draw-in groove keeps unanimous with the die sinking direction of mould, then in proper order to the oblique guide pillar of the second draw-in groove design of equidirectional not, slider etc. to one side, in order to guarantee the mould at the die sinking in-process, the condition of hard drawing of patterns can not appear in the draw-in groove position, thereby make the precision on product surface descend, pleasing to the eye degree also descends.

However, in the process of actual production, the first clamping groove of some products is deep, and the length of the product is long, so that the mold design thought that the demolding direction of the first clamping groove is consistent with the mold opening direction of the mold can result in overlarge thickness of the mold, and a direction slider is additionally arranged for reducing the thickness of the mold.

For some one-to-two molds developed to increase the productivity, too high mold height further increases the overall volume of the mold, so that more mold materials have to be used to manufacture the mold during the production process, and a larger injection molding machine has to be used to manufacture the larger mold.

According to the multi-clamping-groove die, the demolding direction of the first clamping groove and the die opening direction of the die are staggered to form a gamma angle, wherein gamma is more than 0 degree and less than 90 degrees, so that the problem of over-thick die thickness caused by the deep depth of the first clamping groove can be effectively solved; the demolding direction of the second clamping groove is kept consistent with the mold opening direction of the mold as far as possible, so that more inclined sliding blocks or directional sliding blocks can be reduced, demolding can be completed only by using the core block, and most of the second clamping grooves can be smoothly demolded in the mold opening process, so that the hard demolding condition is prevented; it is worth mentioning that, the first drawing of patterns subassembly that this application adopted uses first slider, second slider and the cooperation of third slider, wherein first slider and second slider slidable ground are connected, second slider and third slider slidable ground are connected, can decompose into the removal along first slider respectively with the drawing of patterns displacement distance of darker draw-in groove, along the removal of second slider and along the removal of die sinking direction, thereby not only reduced mould thickness, also reduced mould width and mould thickness, make the material cost reduction of whole mould.

The multi-clamping-groove die has the advantages that the low cost is not only reflected in lower material cost of the die, but also reflected in a smaller die, and the processing cost is also reduced; in the actual production process, the selected injection molding machine model is smaller, the purchase cost of the injection molding machine is reduced, and more importantly, the mold opening and closing time of the smaller mold is reduced, so that the period is reduced, and the production cost is reduced.

Further preferably, a first sliding groove and a second sliding groove are formed in the second sliding block, the first sliding block is slidably connected with the second sliding block through the first sliding groove, the third sliding block is slidably connected with the second sliding block through the second sliding groove, a second sliding groove contact surface is formed in the second sliding groove, the second sliding groove contact surface is in contact with the third sliding block, and the demolding surface of the first clamping groove is perpendicular to the second sliding groove contact surface.

In consideration of production cost and processing difficulty, the first sliding groove and the second sliding groove are arranged on the second sliding block, so that the processing difficulty of the second sliding block can be reduced, the second sliding block is more consistent in production, if the protrusion is arranged on one side of the second sliding block, the sliding groove is arranged on the other side of the second sliding block, the processing modes on the two sides are different, and unnecessary production cost is increased; and because the third slider contacts with first draw-in groove, it must go deep into the mold core, must set up the through-hole that supplies the third slider to pass through on the mold core too, in the within range that the condition allows, should reduce the diameter of this through-hole as far as possible, can effectively promote the wholeness of mold core, prevent stress concentration, the problem such as fracture appears in the use promptly, consequently need reduce the volume of third slider, compare in setting up the second spout on the third slider, can make the volume of third slider bigger, it is more difficult to process, consequently choose to set up the second spout on the second slider, can reduce the volume of third slider.

The drawing of patterns face and the second spout contact surface of first draw-in groove are perpendicular, can guarantee under the unanimous condition of die sinking stroke, and drawing of patterns distance is the longest to the distance that the third slider removed along the second slider is the shortest, effectual reduction mould volume, thereby reach reduce cost, increase the purpose of profit.

Preferably, the first sliding block is provided with a first sliding block contact surface, the first sliding block contact surface is in contact with the first sliding groove, and the first sliding block contact surface and the second sliding groove contact surface are both perpendicular to the outer side surface of the first sliding block.

The first sliding block contact surface and the second sliding groove contact surface are both vertical to the outer side surface of the first sliding block, and one of the advantages is that the third sliding block moves along with the die opening action of the movable die, and the third sliding block drives the second sliding block to move in the die opening process, so that the die opening action is realized, the second sliding groove contact surface and the first sliding block contact surface are ensured to be vertical to the outer side surface of the first sliding block, and the phenomenon that the second sliding block is clamped due to self gravity and friction force in the sliding process of the second sliding block can be reduced; secondly, the distance that the second slide block moves along the first slide block in the mould opening process can be reduced, so that the effect of reducing the volume of the mould is realized.

More preferably, the first slider contact surface forms an included angle α with the bottom surface of the first slider, the second chute contact surface forms an included angle β with the first slider contact surface, the mold release movement distance is D1, the mold opening movement distance is D2, D2 ═ D1/cos γ is satisfied, during the mold opening operation, the second slider moves along the first slider contact surface by a distance D3, D3 ═ D1/sin β, the second slider moves along the mold opening direction by a distance D4, D4 ═ D3cos α is satisfied, and the sum of the included angle α and the included angle β is not greater than 90 °.

The relation between the demoulding moving distance D1 and the die sinking moving distance D2 is a function D2 being D1/cos gamma, the moving distance D3 of the second slide block along the contact surface of the first slide block being D1/sin beta, the moving distance D4 of the second slide block along the die sinking direction being D3cos alpha, so that the linear relation among D1, D2, D3 and D4 can be obtained, the demoulding moving distance can be linearly increased along with the linear increase of the die sinking moving distance in the die sinking process, and the problem that the demoulding process is suddenly and suddenly changed and the surface of the first clamping groove is scratched can be avoided; the sum of the included angle alpha and the included angle beta is not more than 90 degrees, so that an acute angle is formed between the contact surface of the second sliding chute and the bottom surface of the first sliding block, the third sliding block is prevented from inclining towards the direction of the first sliding block, the third sliding block is prevented from interfering with the first sliding block, the size of the third sliding block and the size of the first sliding block are further increased to avoid the interference of the mold, and the purpose of reducing the size of the mold cannot be achieved.

Preferably, the included angle α is larger than the included angle β.

From the principle analysis, contained angle alpha and contained angle beta's size, do not influence drawing of patterns moving distance D1 and decompose and be the distance D4 that the second slider moved along first slider contact surface moving distance D3 and second slider along the die sinking direction, but at the in-process of actual production, contained angle alpha is greater than contained angle beta, can decompose into the all directions of length width height of mould simultaneously with drawing of patterns moving distance D1, avoid the mould too big and lead to the used injection molding machine model of mould too big at a certain size.

Further preferably, the angle α is not greater than 45 °.

Considering that the opening distance D2 can be decomposed into a distance moving along the contact surface of the second chute and a distance moving along the contact surface of the first slide block D3, if the included angle α is too small, the distance moving along the opening direction D4 of the second slide block becomes large under the condition that the included angle β and the included angle γ remain unchanged, so that the volume of the mold is increased, and therefore, the included angle α is as large as possible within the allowable range of the conditions; however, in the actual production process, the included angle α is too large, which results in too large moving distance perpendicular to the mold opening direction, thereby increasing the height of the mold, so that the included angle α is considered to be not more than 45 °.

Preferably, a third protrusion is arranged on the third slider, the third slider is slidably connected with the second sliding groove through the third protrusion, and the outer side surface of the third protrusion is parallel to the demolding surface of the first clamping groove.

It is worth mentioning that although the required demoulding action can be also completed by the unparallel of the outer side surface of the third protrusion and the demoulding surface of the first clamping groove, the production difficulty and the processing cost are considered, the angle of the milling cutter needs to be additionally changed when the unparallel needs to be processed, extra cost is increased, the condition that the outer side surface of the third protrusion is parallel to the demoulding surface of the first clamping groove is ensured, the milling cutter can be processed and formed at one time, and the processing cost and time are reduced.

In another preferred mode, the movable die is provided with a first demolding resetting component, the first demolding resetting component is convexly provided with a resetting part, the resetting part is in contact with the second sliding block when the movable die is closed, and the resetting part is suitable for pushing the second sliding block to reset.

The reset mode of first drawing of patterns subassembly has two kinds, and under the condition that does not use first drawing of patterns reset subassembly, the cover half can reset along the opposite direction of drawing of patterns direction, but in actual production, installs reset portion additional, makes reset portion promote the mode that the second slider resets, can increase the compound die speed in the production process, prevents because compound die speed is too fast, leads to the second slider to break away from.

Further preferably, a limiting assembly is fixedly connected to the first demolding assembly and is suitable for limiting the second sliding block to slide left and right; the second sliding block is provided with a second limiting block, when the second sliding block is at a mold closing end point, the second limiting block is in contact with the limiting assembly, and the second limiting block is suitable for limiting the maximum moving distance of the second sliding block.

Further preferably, a wear-resistant block is arranged on the contact surface of the first sliding block, and the wear-resistant block is suitable for reducing the wear of the first sliding block and the second sliding block; the limiting assembly is provided with a quick-release hole, and the quick-release hole is suitable for replacement of the third sliding block.

It is worth mentioning that, need add on the first slider contact surface and establish wear-resisting piece, and can not add on the second spout contact surface and establish wear-resisting piece, because the third slider need keep its gliding distance and speed on the second spout contact surface can not be too fast according to frictional force, and need rely on frictional force to offset partly gravity, prevent its nature landing after the die sinking, consequently need set up quick detach hole on spacing subassembly, after the third slider is worn and torn, conveniently more smooth third slider, it is lowest to play the cost of maintenance, the best function of maintenance effect.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the first slide block, the second slide block and the third slide block are used for ensuring smooth demolding of the first clamping groove inconsistent with the mold opening direction, and the demolding distance is divided into the moving distance along the second slide block and the first slide block, so that the length, the width and the height of the mold are uniformly increased, and the phenomenon that an injection molding machine required for producing the mold is overlarge due to the fact that the size of a certain part of the mold is overlarge is prevented;

(2) this many draw-in grooves mould can reduce the length, width, the high size of mould relatively simultaneously, makes the even increase of mould overall dimension to keep the range of increase minimum, in actual production, the mould of rectangular shape more easily appears overlap, burr scheduling problem, and the mould of each size unanimity of length width height is difficult to appear the overlap, and the mould volume that reduces, reason reduce mould cost promptly, also is favorable to reduction in production cost (including injection molding machine use cost and production cycle).

Drawings

FIG. 1 is a schematic workpiece diagram illustrating the structure of a workpiece according to one embodiment of the present application;

FIG. 2 is a schematic view of one embodiment of the mold of the present application, showing the overall structure and location of the mold;

FIG. 3 is a schematic view of one embodiment of a movable mold of the present application showing the location and configuration of a first stripper reset assembly and reset portion;

FIG. 4 is a schematic view of one embodiment of a stationary mold of the present application, showing the various components of the stationary mold;

FIG. 5 is another isometric view of an embodiment of a stationary mold half of the mold of the present application showing the mounting location and configuration of a first stripper assembly;

FIG. 6 is a schematic view of an embodiment of a mold of the present application showing a first stripper member passing through the mold core and contacting a workpiece;

FIG. 7 is a schematic view of a first stripper assembly of an embodiment of a mold of the present application, showing the first stripper assembly in a clamped condition;

FIG. 8 is a schematic view of a first stripper assembly of an embodiment of the mold of the present application, showing the first stripper assembly in an open state;

FIG. 9 is a front view of a first stripper assembly of an embodiment of a mold of the present application, showing included angle α, included angle β, and included angle γ;

FIG. 10 is another isometric view of the first stripper assembly of an embodiment of the mold of the present application showing the location of the outer side of the third projection and the contact surface of the second runner;

FIG. 11 is a right side view of the first stripper assembly of an embodiment of the mold of the present application showing the stop assembly and quick release holes;

fig. 12 is a schematic view of a second slide of an embodiment of the mold of the present application, showing the locations of the first runner and the second runner.

In the figure:

1. fixing a mold; 10. a first stripper assembly; 11. a first slider; 111. a first slider contact surface; 1111. a wear-resistant block; 112. the outer side surface of the first sliding block; 113. a first slider bottom surface; 12. a second slider; 121. a first chute; 122. a second chute; 1221. a second chute contact surface; 123. a second limiting block; 13. a third slider; 131. a third protrusion; 1311. a third convex outer side surface; 132. the outer side surface of the third sliding block; 14. a limiting component; 141. a quick release hole; 15. a second stripper assembly;

2. moving the mold; 21. a first stripper reset assembly; 211. a reset section;

3. a workpiece; 31. a first card slot; 311. demoulding surface; 32. a second card slot;

4. a mould table;

5. and (5) a mold core.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, the multi-slot workpiece 3 is a safety belt buckle, the workpiece 3 is long and has a plurality of slots, one of the slots is deep and long, the slot with the deep depth is a first slot 31, the other slots are second slots 32, and the second slots 32 have a plurality of different directions and depths, so that different demolding manners are selected, and the directions of the first slot 31 and the second slot 32 are different, in a conventional mold design, the demolding direction of the first slot 31 is usually taken as a mold opening direction, and the second slot 32 completes demolding through an inclined guide post or an inclined slider.

However, in the actual production process, for some products such as a safety belt buckle, as shown in fig. 1, the first clamping groove 31 is deep, and the length of the product itself is long, so that the mold design idea that the demolding direction of the first clamping groove 31 is consistent with the mold opening direction of the mold can result in an excessively large thickness of the mold, and in order to reduce the thickness of the mold, a direction slider is additionally arranged, and even if the direction slider is additionally arranged, the volume of the direction slider is also excessively large, so that the height of the mold is increased, the size of the overall mold is larger, and a larger injection molding machine has to be used.

For some one-to-two molds developed for improving the productivity, too high mold height further increases the volume of the mold, so that the overall volume of the mold is greatly increased, and therefore, in the production process, more mold materials have to be used for manufacturing the mold, and a larger injection molding machine has to be used for producing the larger mold.

Accordingly, the inventor has developed a low-cost multi-slot die, one embodiment of which is shown in fig. 2 to 12, and includes a fixed die 1 and a movable die 2, the fixed die 1 is provided with a first demoulding assembly 10, the first demoulding assembly 10 is fixed on a die table 4, the first demoulding assembly 10 includes a first slide block 11, a second slide block 12 and a third slide block 13, the first slide block 11 is fixedly connected to the fixed die 1, the second slide block 12 is slidably connected to the first slide block 11, the third slide block 13 is slidably connected to the second slide block 12, and the third slide block 13 is suitable for forming a first slot 31 on a workpiece 3; the fixed die 1 is provided with a second demoulding component 15, and the second demoulding component 15 is suitable for forming a second clamping groove 32 of the workpiece 3; when the mold is closed, the third slide block 13 is in contact with the first clamping groove 31 on the workpiece 3, and the second demolding component 15 abuts against the second clamping groove 32; when the mold is opened, the third slide block 13 is separated from the first clamping groove 31, and the second demolding assembly 15 is separated from the second clamping groove 32; an included angle gamma is formed between the demolding direction of the first clamping groove 31 and the mold opening direction of the movable mold 2, wherein gamma is more than 0 degree and less than 90 degrees; the demoulding direction of the second clamping groove 32 on the workpiece 3 is the same as the mould opening direction of the movable mould 2.

According to the multi-clamping-groove die, as shown in fig. 3 to 6, the demolding direction of the first clamping groove 31 and the die opening direction of the movable die 2 are staggered to keep 0 degrees < gamma < 90 degrees, so that the problem that the thickness of the die is too thick due to the fact that the thickness of the first clamping groove 31 is deep can be effectively solved; the demolding direction of the second clamping groove 32 is kept consistent with the mold opening direction of the mold as much as possible, so that more inclined sliders or directional sliders can be reduced, most of the second clamping grooves 32 can be smoothly demolded in the mold opening process, and the hard demolding condition is prevented; it is worth mentioning that the first demoulding assembly 10 adopted in the present application uses the first slider 11, the second slider 12 and the third slider 13 to cooperate, wherein the first slider 11 and the second slider 12 are slidably connected, the second slider 12 and the third slider 13 are slidably connected, and the demoulding moving distance of the first clamping groove 31 can be respectively decomposed into the movement along the first slider 11, the movement along the second slider 12 and the movement along the mould opening direction, so that the mould thickness is not only reduced, but also the mould width and the mould thickness are reduced, and the material cost of the whole mould is reduced.

Particularly, for a one-out-two mold developed for improving the production efficiency, the shape of the mold can be effectively changed from a slender shape to a square shape as much as possible, in the specific embodiment, the shape size of an original mold is 1200mm × 600mm × 780mm, the shape size of the mold adopting the invention is 800mm × 500mm × 590mm, the height size is reduced by 1/3, the length size is reduced by about 20%, the volume and the weight of the mold are obviously reduced, the model of an injection molding machine used by the original mold is about 530T, the injection molding machine used by the mold adopting the invention is only 300T, the size of the injection molding machine is greatly reduced, on one hand, the purchase cost of the injection molding machine is reduced, on the other hand, the power consumption of the product is also reduced, and the purposes of energy conservation and environmental protection are achieved.

In terms of production efficiency, in this specific embodiment, the mold cycle of the invention is shortened by about 15 seconds compared with the original mold, the production efficiency is further improved, the durability of the mold is increased, the square mold is more evenly extruded by the mold plate, so the durability is also improved, and the problems of eccentricity of the mold, flash, burr and the like of the product are obviously observed.

Further preferably, as shown in fig. 1, 10 and 12, the second slider 12 is provided with a first sliding slot 121 and a second sliding slot 122, the first slider 11 is slidably connected with the second slider 12 through the first sliding slot 121, the third slider 13 is slidably connected with the second slider 12 through the second sliding slot 122, the second sliding slot 122 is provided with a second sliding slot contact surface 1221, the second sliding slot contact surface 1221 is in contact with the third slider 13, the demolding surface 311 of the first card slot 31 is perpendicular to the second sliding slot contact surface 1221, and in this particular embodiment, the demolding surface 311 and the third slider outer side surface 132 are overlapped.

In consideration of the production cost and the processing difficulty, the first sliding groove 121 and the second sliding groove 122 are both arranged on the second sliding block 12, so that the processing difficulty of the second sliding block 12 can be reduced, the production of the second sliding block 12 is more consistent, if a protrusion is arranged on one side of the second sliding block 12, and a sliding groove is arranged on the other side of the second sliding block, the processing modes on the two sides are different, and the unnecessary production cost is increased; in addition, since the third slider 13 contacts with the first slot 31, it must go deep into the mold core 5, and the mold core 5 must also be provided with a through hole for the third slider 13 to pass through (as shown in fig. 6, the third slider 13 passes through the through hole on the mold core 5), and within the allowable range of the conditions, the diameter of the through hole should be reduced as much as possible, so as to effectively improve the integrity of the mold core 5 and prevent the stress concentration, i.e. the cracking and other problems during the use process, therefore, the volume of the third slider 13 needs to be reduced, compared with the second sliding groove 122 provided on the third slider 13, the volume of the third slider 13 is larger and the processing is more difficult, and therefore, the second sliding groove 122 provided on the second slider 12 is selected, so as to reduce the volume of the third slider 13.

As shown in fig. 1, 7 and 10, the demolding surface 311 of the first card slot 31 is perpendicular to the second chute contact surface 1221, so that the longest demolding distance can be ensured under the condition that the mold opening strokes are consistent, and the shortest moving distance of the third slider 13 along the second slider 12 is ensured, thereby effectively reducing the mold volume, and achieving the purposes of reducing the cost and increasing the profit; if the releasing surface 311 of the first card slot 31 is not perpendicular to the second chute contact surface 1221, the releasing direction of the third slider 13 is not parallel to the releasing surface 311, which causes a hard releasing condition and affects the appearance of the releasing surface 311.

In another preferred embodiment, as shown in fig. 10, the first slider upper 44 has a first slider contact surface 111, the first slider contact surface 111 contacts the first runner 121, the first slider contact surface 111 and the second runner contact surface 1221 are perpendicular to the first slider outer side surface 112, and the first slider outer side surface 112 is oriented as shown in fig. 10.

The first sliding block contact surface 111 and the second sliding groove contact surface 1221 are perpendicular to the first sliding block outer side surface 112, and one of the advantages is that the third sliding block 13 moves along with the mold opening action of the movable mold 2, and the third sliding block 13 drives the second sliding block 12 to move in the mold opening process, so that the mold opening action is realized, the second sliding groove contact surface 1221 and the first sliding block contact surface 111 are guaranteed to be perpendicular to the first sliding block outer side surface 112, and the second sliding block 12 can be prevented from being clamped due to self gravity and friction in the sliding process; secondly, can reduce in the die sinking process, the distance that second slider 12 removed along first slider 11, thereby realize reducing the effect of mould volume, owing to through first slider 11, second slider 12 and third slider 13 combined action, thereby play the purpose of reduction mould size, consequently preferred while mould length direction, mould width direction, mould direction of height expand the mould size, avoid the mould to become rectangular shape, make the mould keep the square as far as possible, can effectively promote the quality (including overlap, appearance size precision, weight distribution etc.) of work piece 3.

As shown in fig. 7, the mold is in a mold closing state, and the third slide block 13 is tightly attached to the workpiece 3; as shown in fig. 8, in order to open the mold, the third slider 13 is pulled by the demolding surface 311 on the workpiece 3, so as to drive the third slider 13 to move in the demolding direction, thereby achieving the purpose of slow demolding, and finally, the third slider 13 is completely separated from the demolding surface 311 on the workpiece 3.

Further preferably, as shown in fig. 9, for convenience of understanding, a front view 9 is used to show positions and functional relationships of the components, where the first slider contact surface 111 forms an included angle α with the first slider bottom surface 113, the second chute contact surface 1221 forms an included angle β with the first slider contact surface 111, the mold release movement distance is D1, the mold opening movement distance is D2, and D2 is equal to D1/cos γ, and during the mold opening action, the distance that the second slider 12 moves along the first slider contact surface 111 is D3, and D3 is equal to D1/sin β, and the distance that the second slider 12 moves along the mold opening direction is D4, and D4 is equal to D3cos α, and the sum of the included angle α and the included angle β is not greater than 90 °. The orientation of the first slider bottom surface 113 is shown in fig. 8 and 9.

It should be noted that D1, D2, D3 and D4 refer to moving distances, and dot-dash lines for facilitating connection form different functional relationships according to different included angles.

As shown in fig. 9, the relationship between the mold release moving distance D1 and the mold opening moving distance D2 is a function D2 being D1/cos γ, the distance D3 that the second slider 12 moves along the first slider contact surface 111 being D1/sin β, the distance D4 that the second slider 12 moves along the mold opening direction being D3cos α, so as to obtain a linear relationship D1, D2, D3, and D4, which can ensure that the mold release moving distance increases linearly with the linear increase of the mold opening moving distance during the mold opening process, and the problem that the surface of the first card slot 31 is scratched due to the fact that the mold release process increases rapidly and slowly can not occur; the sum of the included angle α and the included angle β is not greater than 90 °, which can ensure that the second chute contact surface 1221 forms an acute angle with the bottom surface 113 of the first slider, and prevent the third slider 13 from deflecting towards the first slider 11, thereby causing interference between the third slider 13 and the first slider 11, so that the size of the mold can be further increased to avoid the interference, and the purpose of reducing the size of the mold cannot be achieved.

In a further preferred embodiment, as shown in fig. 9, the included angle α is greater than the included angle β.

From the principle analysis, the size of contained angle alpha and contained angle beta does not influence drawing of patterns moving distance D1 and decomposes the distance D4 that is the second slider 12 and moves along the die sinking direction along first slider contact surface 111 moving distance D3 and second slider 12, but in the in-process of actual production, contained angle alpha is greater than contained angle beta, can decompose into the all directions of length width height of mould simultaneously with drawing of patterns moving distance D1, avoids the mould too big and lead to the used injection molding machine model of mould too big at a certain size.

Further preferably, the angle α is not greater than 45 °.

Considering that the opening distance D2 can be decomposed into a distance moving along the second sliding chute contact surface 1221 and a distance moving along the first sliding block contact surface 111D 3, if the included angle α is too small, the distance moving along the opening direction D4 of the second sliding block 12 becomes large under the condition that the included angle β and the included angle γ remain unchanged, so that the mold volume is increased, and therefore, the included angle α is as large as possible within the allowable range of the conditions; however, in the actual production process, the included angle α is too large, which results in too large moving distance perpendicular to the mold opening direction, thereby increasing the height of the mold, so that the included angle α is considered to be not more than 45 °.

In a further preferred embodiment, as shown in fig. 10, a third protrusion 131 is disposed on the third slider 13, the third slider 13 is slidably connected to the second sliding slot 122 through the third protrusion 131, a third protrusion outer side surface 1311 is parallel to the demolding surface 311 of the first card slot 31, and an orientation of the third protrusion outer side surface 1311 is as shown in fig. 10.

It should be noted that although the third protrusion outer side surface 1311 is not parallel to the demolding surface 311 of the first slot 31, the required demolding action can be completed, but the difficulty of production and the processing cost are considered, and when the third protrusion outer side surface 1311 is not parallel to the demolding surface 311 of the first slot 31, the angle of the milling cutter needs to be additionally changed during processing, so that the additional cost is increased, and the third protrusion outer side surface 1311 is ensured to be parallel to the demolding surface 311 of the first slot 31, so that the milling cutter can be processed and formed at one time, and the processing cost and time are reduced; and the third projection outer side surface 1311, the third slider outer side surface 132, and the mold releasing surface 311 are ensured to be parallel, so that the amount of calculation can be reduced, and the final moving direction of the third slider 13 can be ensured to coincide with the mold releasing direction.

Alternatively, as shown in fig. 3 and 6, the movable mold 2 is provided with a first mold release resetting assembly 21, the first mold release resetting assembly 21 is convexly provided with a resetting part 211, the resetting part 211 is contacted with the second slide block 12 during the mold closing action, and the resetting part 211 is suitable for pushing the second slide block 12 to reset.

The first demoulding assembly 10 has two resetting modes, under the condition that the first demoulding resetting assembly 21 is not used, the fixed die 1 can reset along the reverse direction of the demoulding direction, but in the actual production, the resetting part 211 is additionally arranged, so that the resetting part 211 pushes the second slide block 12 to reset, the mould closing speed in the production process can be increased, and the second slide block 12 is prevented from being separated due to the too high mould closing speed.

In a further preferred embodiment, as shown in fig. 5 and 7, the first demoulding assembly 10 is fixedly connected with a limiting assembly 14, in this particular embodiment, as shown in fig. 5, the limiting assembly 14 is fixed on the fixed mould 1 through bolts, and the limiting assembly 14 is suitable for limiting the second sliding block 12 to slide left and right; the second sliding block 12 is provided with a second stop block 123, when the mold closing end point is located, the second stop block 123 contacts with the stop assembly 14, and the second stop block 123 is suitable for limiting the maximum moving distance of the second sliding block 12.

In actual production process, do not install spacing subassembly 14 and second stopper 123 additional and still can accomplish production process, but because mould and first drawing of patterns subassembly 10 are in the action of closing the mould, receive inertial influence, this inertial force is when closing mould speed is not fast, and is little to the influence of mould, but because for reduction in production cost, reduction in production cycle can accelerate and close mould speed, if do not install spacing subassembly 14 and second stopper 123 additional this moment and can make second slider 12 because inertial force rushes out first spout 121, thereby make first drawing of patterns subassembly 10 inefficacy.

Further preferably, as shown in fig. 10 and 11, wherein fig. 11 is an isometric view of the first stripper assembly 10, the first slide contacting surface 111 is provided with wear-resistant blocks 1111, which are adapted to reduce wear of the first slide 11 and the second slide 12; as shown in fig. 11, the limit component 14 is provided with a quick-release hole 141, and the quick-release hole 141 is suitable for replacing the third slider 13.

It should be mentioned that the wear-resistant block 1111 needs to be added on the first slider contact surface 111, and the wear-resistant block 1111 cannot be added on the second sliding groove contact surface 1221, because the third slider 13 needs to keep the sliding distance on the second sliding groove contact surface 1221 not too long and ensure the speed not too fast depending on the friction force, and needs to counteract a part of gravity depending on the friction force to prevent the third slider from naturally sliding down after the mold is opened, the quick-release hole 141 needs to be arranged on the limit component 14, and when the third slider 13 is worn, the third slider 13 is convenient to slide more, thereby achieving the functions of lowest maintenance cost and best maintenance effect; when the third slide block 13 needs to be replaced, only the second slide block 12 and the third slide block 13 need to be moved reversely, so that the third slide block 13 passes through the quick-release hole 141, and quick release of the third slide block 13 is realized.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A forming die for a multi-clamping-groove workpiece comprises a fixed die and a movable die and is characterized in that a first demolding assembly is arranged on the fixed die and comprises a first sliding block, a second sliding block and a third sliding block, the first sliding block is fixedly connected to the fixed die, the second sliding block is slidably connected to the first sliding block, the third sliding block is slidably connected to the second sliding block, and the third sliding block is suitable for forming a first clamping groove of the workpiece; a second demolding assembly is arranged on the fixed mold and is suitable for forming a second clamping groove of the workpiece;

2. The mold for molding a multi-card slot workpiece according to claim 1, wherein said second slide block is provided with a first slide slot and a second slide slot, said first slide block is slidably connected with said second slide block through said first slide slot, said third slide block is slidably connected with said second slide block through said second slide slot, said second slide slot is provided with a second slide slot contact surface, said second slide slot contact surface is in contact with said third slide block, and said demolding surface of said first card slot is perpendicular to said second slide slot contact surface.

3. The mold of claim 2, wherein the first slide has a first slide contacting surface thereon, the first slide contacting surface contacting the first slide slot, and the first slide contacting surface and the second slide contacting surface are perpendicular to the outer surface of the first slide.

4. The forming die of claim 3, wherein an included angle α is formed between the contact surface of the first sliding block and the bottom surface of the first sliding block, an included angle β is formed between the contact surface of the second sliding chute and the contact surface of the first sliding block, the demolding moving distance is D1, the mold opening moving distance is D2, D2 is D1/cos γ, the second sliding block moves along the contact surface of the first sliding block by D3 during the mold opening operation, D3 is D1/sin β, the second sliding block moves along the mold opening direction by D4, D4 is D3cos α, and the sum of the included angle α and the included angle β is not more than 90 °.

5. The mold of claim 4, wherein the included angle α is greater than the included angle β.

6. The die for forming a multi-grooved workpiece according to claim 4, wherein the included angle α is not greater than 45 °.

7. The mold for molding a multi-grooved workpiece according to claim 2, wherein the third slide block is provided with a third protrusion, the third slide block is slidably connected to the second groove via the third protrusion, and an outer side surface of the third protrusion is parallel to the demolding surface of the first groove.

8. The mold for molding a multi-grooved workpiece according to claim 1, wherein the movable mold has a first mold release returning assembly, the first mold release returning assembly has a returning portion protruding therefrom, the returning portion contacts the second slide block during the mold closing operation, and the returning portion is adapted to push the second slide block to return.

9. The mold for molding a multi-grooved workpiece according to claim 7, wherein a limiting member is fixedly connected to said first stripper member, said limiting member being adapted to limit said second slide to slide left and right; the second sliding block is provided with a second limiting block, when the second sliding block is at a mold closing end point, the second limiting block is in contact with the limiting assembly, and the second limiting block is suitable for limiting the maximum moving distance of the second sliding block.

10. The forming die for the multi-slot workpiece according to claim 9, wherein the first sliding block is provided with a wear-resistant block on a contact surface, and the wear-resistant block is suitable for reducing the wear of the first sliding block and the second sliding block; the limiting assembly is provided with a quick-release hole, and the quick-release hole is suitable for replacement of the third sliding block.