CN206254488U - A kind of hot forming tool for manufacturing the plastic containers with annular leg - Google Patents

Abstract

A kind of hot forming tool for manufacturing the plastic containers with annular leg, including upper die and lower die, it is characterized in that：The lower mould includes lower template, lower bolster, cylinder barrel, piston, lower mold body, shaping mould, lower cut-off-die, lower cut-off-die installing plate, knock-pin and raising plate；Lower bolster has cylinder barrel accommodating cavity, and cylinder barrel is fixedly mounted in cylinder barrel accommodating cavity, and piston is arranged in cylinder barrel and can be moved up and down in cylinder barrel；Finishing die includes side mould, leg mould, leg turnover stock mould and movable die block, leg mould is arranged on cylinder barrel top and is in piston limit portion top, leg turns down stock mould lower end and piston integrally connected, leg turnover stock mould is located at leg mould inner side, located at leg turnover stock mould inner side, side mould is arranged in lower mold body and is stacked in leg mould top movable die block；Lower cut-off-die is in the outside of side mould.The utility model can manufacture the plastic containers with annular leg, and by local handling, you can quickly and easily complete repacking.

Description

A kind of hot forming tool for manufacturing the plastic containers with annular leg

Technical field

The utility model is related to thermal forming device, specifically, is related to a kind of for manufacturing the plastics with annular leg The hot forming tool of container.

Background technology

It is existing a kind of for manufacturing plastic containers（Such as plastic cup, plastic casing, plastic tub）Hot forming tool, can Complete shaping, shear action.This hot forming tool includes upper die and lower die；Upper mould generally includes upper die plate and upper cut-off-die, on Cut-off-die is arranged on upper die plate, and upper cut-off-die has a cavity, and the inner edge of generally upper cut-off-die lower end is upper shearing knife edge；Lower mould includes Lower template, lower mold body, lower cut-off-die and shaping mould, lower mold body are arranged in lower template and are in lower template top, and lower cut-off-die is installed In lower mold body and it is in above lower mold body（The outer rim of generally lower cut-off-die upper end is down cut blade, and down cut blade is cut with above Cutoff edge matches）, shaping mould is in lower mold body（The generally rectangular framework of lower mold body）, shaping mould be in lower mold body and under The inner side of cut-off-die.

Above-mentioned lower mould generally also includes knock-pin, and shaping mould includes Bian Mo and movable die block, and side mould is arranged in lower mold body And in the inner side of lower cut-off-die, movable die block is connected located at the inner side of side mould, movable die block with the upper end of knock-pin, knock-pin Lower end extend out to lower template lower section and connects knock-pin installing plate.Above-mentioned side mould is used for side wall, the edge part of molded plastic container Point, movable die block is used for the shaping of plastic containers bottom.Plastic containers by divider walls into multiple tolerant units situation Under, side mould is provided with dividing plate, and shaping mould is separated into multiple forming units by dividing plate, and dividing plate is used to be molded each partition wall；Dump bottom Mould is generally made up of corresponding multiple movable die block unit, and movable die block unit is identical with forming unit quantity and corresponds, Movable die block unit is in corresponding forming unit inner side, and movable die block unit is used to be molded the bottom of corresponding tolerant unit, Each movable die block unit is connected to knock-pin installing plate, by the liter of each movable die block unit of knock-pin installing plate Synchronization Control Drop.

Upper mould generally also includes binder ring, and binder is located in the cavity of cut-off-die, and binder ring can be in the cavity of upper cut-off-die Interior up and down motion, be pressed on sheet material on lower mould by binder ring during matched moulds.

Upper mould generally also includes stretching head, stretch rod, stretch rod installing plate and stretch rod installing plate lifting control mechanism, draws Boom lower end connects stretching head, and in the cavity of upper cut-off-die, stretch rod upper end connects stretch rod installing plate, stretch rod to stretching head Installing plate connects stretch rod installing plate lifting control mechanism.In the case of binder ring is provided with the cavity of upper cut-off-die, above-mentioned drawing Extension head is in the cavity of binder ring.Above-mentioned stretch rod installing plate lifting control mechanism can be on upper die plate；Fixed in upper mould In the case of in the frame, stretch rod installing plate lifting control mechanism also can be in frame.Stretch rod installing plate elevating control Mechanism is used to drive stretch rod to move up and down；Under the drive of stretch rod, stretching head can move up and down in the cavity of upper cut-off-die. Stretch rod installing plate lifting control mechanism may include draft cylinder, and stretch rod installing plate connects the piston rod of draft cylinder；Stretching The cylinder body of cylinder can be arranged on upper die plate；In the case where upper mould is fixed in frame, the cylinder body of draft cylinder can also be installed In frame.It is provided with the mould of side in the case that shaping mould is separated into the dividing plate of multiple forming units, stretching head, stretch rod lead to It is standing to have multiple, and stretching head is identical with forming unit quantity and corresponds, the stretch rod upper end on each stretching head is all connected with Stretch rod installing plate, the lifting of each stretching head one is controlled by stretch rod installing plate lifting control mechanism.

During manufacture plastic containers, plastic sheet is heated first, plastic sheet is reached forming temperature；By the modeling heated Media sheet by forming area, now hot forming tool matched moulds, under the drive of stretch rod, stretching head is in the cavity of upper cut-off-die Move downward, plastic sheet is pre-stretched, plastic sheet shape and size is approached with product；Then, through malleation heat into Type or negative pressure thermoforming, make plastic sheet be close to shaping mould；Formed sheet after shaping is by upper shearing knife edge and down cut blade Shear action is completed, plastic containers are cut out coming from formed sheet, obtain single plastic containers；Then knock-pin is installed Plate, knock-pin and movable die block rise relative to lower template, and plastic containers are ejected from shaping mould, are detached into plastic containers Pattern；Then dried to plastic containers, plastic containers are blown off hot forming tool.

There is no leg with the bottom of the plastic containers manufactured by above-mentioned hot forming tool, its aesthetics and using effect are not Enough ideals；And this hot forming tool is only used for producing a kind of plastic containers, when production another kind plastic containers are needed, Need to remake a set of new hot forming tool, original hot forming tool is unloaded from thermoforming machine, then by new heat Mould is installed on thermoforming machine, which increases equipment and cost of labor, and production efficiency is relatively low.

The content of the invention

Technical problem to be solved in the utility model be to provide it is a kind of can complete shaping and shearing manipulation thermoforming Mould, this hot forming tool can manufacture the plastic containers with annular leg, and the production by after locally repacking The plastic containers of other specifications, are conducive to saving equipment and cost of labor, improve production efficiency.The technical scheme of use is as follows：

A kind of hot forming tool for manufacturing the plastic containers with annular leg, including upper die and lower die；Upper mould bag Upper die plate and upper cut-off-die are included, upper cut-off-die is arranged on upper die plate, and upper cut-off-die has a cavity, it is characterized in that：The lower mould includes Lower template, lower bolster, cylinder barrel, piston, lower mold body, shaping mould, lower cut-off-die, lower cut-off-die installing plate, knock-pin and raising plate；Underlay Plate is arranged in lower template and is in lower template top, and lower mold body is removably mounted on lower bolster and is in lower bolster top, Lower cut-off-die installing plate is removably mounted in lower mold body and is in lower mold body top；Lower bolster has cylinder barrel accommodating cavity, and cylinder barrel is solid In the cylinder barrel accommodating cavity, piston is arranged in cylinder barrel and can be moved up and down in cylinder barrel for Dingan County, the lateral surface of piston with The medial surface of cylinder barrel is in sealing contact, and cylinder barrel top is provided with the piston limit portion that piston can be prevented to continue to move up；Finishing die Including side mould, leg mould, leg turnover stock mould and movable die block, Bian Mo, leg mould and leg turn down stock mould in a ring, Leg mould is arranged on cylinder barrel top and is in piston limit portion top, and leg turns down stock mould lower end and piston integrally connected, , located at leg mould inner side, movable die block is located at leg turnover stock mould inner side and is in piston top for leg turnover stock mould, The knock-pin pilot hole for moving towards up and down is provided with piston, knock-pin is in knock-pin pilot hole, movable die block and knock-pin Upper end connects, and the lower end of knock-pin extend out to lower template lower section, and side mould is arranged in lower mold body and is stacked in leg mould top； Sealing ring is provided between leg mould and piston limit portion, the sealing ring is in close contact with the lateral surface of leg turnover stock mould；Top Lift slab is provided with knock-pin location hole, and knock-pin lower section is provided with positioning guide bar, and positioning guide bar upper end is consolidated with knock-pin lower end Fixed connection, positioning guide bar is in knock-pin location hole, and the cross-sectional area of knock-pin is transversal more than knock-pin location hole Face area；Lower cut-off-die is arranged on lower cut-off-die installing plate, and lower cut-off-die is in the outside of side mould.

In above-mentioned hot forming tool, side mould is used for side wall, the marginal portion of molded plastic container, and movable die block is used for plastics The shaping of container bottom, leg mould and leg turnover stock mould are provided commonly for the shaping of annular leg.

The forming process of above-mentioned hot forming tool is：First, piston drops to low level, leg turnover stock mould and dump bottom With low level is dropped to, now the inner surface of side mould, the medial surface of leg mould, leg turn down upper surface and the activity of stock mould to mould The upper surface of bed die surrounds shaping mold cavity jointly, and in the presence of compressed air, plastic sheet is close to the inwall of the shaping mold cavity, Plastic sheet is completed just one-step forming, obtain con-tainer blanks；Then, piston rises, and drives leg to turn down stock mould and dump bottom Mould rises together（Now knock-pin lower end disengages with the upper surface of raising plate）, the bottom of con-tainer blanks is raised to pre-determined bit Put, meanwhile, in the presence of leg turnover stock mould, con-tainer blanks are attached to the upward doubling in part of leg mould medial surface, and by propping up Pin mould and leg turnover stock mould clamp doubling position and cling it jointly, form annular leg, complete determining for plastic containers Type；Then descend cut-off-die to coordinate with upper cut-off-die to shear formed sheet, the plastic containers shaped are sheared from formed sheet Out, single plastic containers are obtained；Then, piston and leg turnover stock mould drop to low level, and raising plate rises and band Dynamic knock-pin and movable die block rise（The now upper surface of knock-pin lower end and raising plate）, plastic containers are ejected.

In the utility model, lower mold body, lower cut-off-die installing plate are detachable installation, be so capable of achieving side mould quickly more Change, hot forming tool is reequiped so that hot forming tool of the present utility model can be used for the production of various plastic containers（Example Such as, plastic cup, plastic bowl, vinyl disc etc., the outer rim shape and size of usual this various plastic containers are consistent, and container bottom and Annular leg shape and size are consistent, and height and sidewall shape are different）.Above-mentioned hot forming tool can be equipped with multiple side moulds and under Die body（The height of lower mold body matches with corresponding side mould）, a kind of each side mould plastic containers of correspondence；Movable die block, leg Mould, leg turnover stock mould only need configuration a set of, can be supporting with each side mould.When repacking hot forming tool is needed, only need More change sides mould and lower mold body, and hot forming tool remainder need not then be changed, and so, be filled by the part of hot forming tool Unload, you can quickly and easily complete the repacking of mould, to produce required plastic containers.The replacing options of side mould and lower mold body are such as Under：Lower cut-off-die installing plate and lower cut-off-die are first unloaded, original lower mold body and side mould is then unloaded；Again by new lower mold body and side mould It is installed to above lower bolster, leg mould, is then reinstalled lower cut-off-die installing plate and lower cut-off-die.

In preferred scheme, the cavity of cylinder barrel is separated into upper air cavity and lower air chamber by above-mentioned piston（Pacify on the lateral surface of piston Equipped with sealing ring, the sealing ring is in close contact with the medial surface of cylinder barrel）, lower bolster is provided with enterprising outlet passageway, enterprising outlet Passage is connected with upper air cavity, and lower template is provided with down outlet passageway, under enter outlet passageway and connected with lower air chamber；Piston base one Body is connected with the piston guide bar for moving towards up and down, and piston guide bar lower end extend out to lower template lower section, the knock-pin pilot hole Piston guide bar lower end is extended to, lower cover is installed in lower template, lower cover is by the lateral surface and lower template of piston guide bar Between clearance seal.Lower cover plays sealing and guide effect, has both ensured the sealing of cylinder barrel lower end, again can be with piston guide bar Coordinate, guiding piston is steadily lifted.

In preferred scheme, above-mentioned knock-pin and positioning guide bar be it is cylindric, knock-pin location hole be manhole, top Internal diameter of the external diameter of rod more than knock-pin location hole.The external diameter for positioning guide bar is typically slightly less than the interior of knock-pin location hole Footpath.Generally, positioning guide bar upper end is connected with the centre of knock-pin lower surface, and knock-pin lower surface is looped around positioning guiding Part around bar upper end constitutes a ring surface, and the ring surface is used for the upper surface with raising plate.

In preferred scheme, the top of above-mentioned leg mould medial surface is gradually outward-dipping from top to bottom, leg mould medial surface Bottom is gradually tilted from top to bottom, and the lateral surface at the top of leg turnover stock mould is gradually outward-dipping from top to bottom.So make The forming process of annular leg is more reliable and stable.The top of lateral surface and leg mould medial surface at the top of leg turnover stock mould Shape matches, and is dimensioned slightly smaller than the top of leg mould medial surface.

In preferred scheme, the upper surface of above-mentioned piston is provided with the first cushion pad being made up of nylon, and the first cushion pad is used To the impulsive force of piston when movable die block decline is reduced.

In preferred scheme, the upper surface of above-mentioned lower template is provided with the second cushion pad being made up of nylon, the second cushion pad The underface of piston is in, the second cushion pad is used to reduce impulsive force when piston declines to lower template.

In order that raising plate is more smoothly lifted, the lead column moved towards up and down is preferably installed with lower template, pushed up Lift slab is provided with raising plate pilot hole, and raising plate is socketed in lead column by raising plate pilot hole and is slided with lead column Coordinate.

In preferred scheme, above-mentioned upper mould also includes the lifting of stretching head, stretch rod, stretch rod installing plate and stretch rod installing plate Controlling organization, stretching head is detachably connected with stretch rod lower end, and in the cavity of upper cut-off-die, stretch rod upper end connects stretching head Stretch rod installing plate, stretch rod installing plate connection stretch rod installing plate lifting control mechanism.Hot forming tool can be equipped with multiple drawings Extension head, after lower mold body and side mould is changed, can as needed change corresponding stretching head.

Above-mentioned stretch rod installing plate lifting control mechanism can be on upper die plate；The situation in frame is fixed in upper mould Under, stretch rod installing plate lifting control mechanism also can be in frame.Stretch rod installing plate lifting control mechanism is used to drive drawing Boom moves up and down；Under the drive of stretch rod, stretching head can move up and down in the cavity of upper cut-off-die.Stretch rod installing plate liter Drop controlling organization may include draft cylinder, and stretch rod installing plate connects the piston rod of draft cylinder；The cylinder body of draft cylinder can pacify On upper die plate；In the case where upper mould is fixed in frame, the cylinder body of draft cylinder can be also arranged in frame.

In order that stretching head is steadily moved, the stretch rod fairlead for moving towards up and down, stretch rod are preferably provided with upper die plate In stretch rod fairlead and interplanting is oriented to stretch rod to be slidably matched.

It is preferred that upper mould also includes binder ring, binder is located in the cavity of cut-off-die, the lower surface of binder ring and lower cut-off-die Or the upper surface of side mould matches and position is corresponding.In the case where binder ring is provided with, above-mentioned stretching head is in binder ring Cavity in.Above-mentioned binder ring can move up and down in the cavity of upper cut-off-die, can apply pressure to plastic sheet to be formed. In one concrete scheme, compression spring is housed between binder ring and upper die plate, compression spring can treat into binder ring when shrinking The plastic sheet of type applies certain pressure.In another concrete scheme, binder ring outside have sealing ring, make binder ring upper end with it is upper The cavity inner wall of cut-off-die forms pressure air chamber, and pressure air chamber can be passed through compressed gas, enable binder ring to plastics to be formed Sheet material applies certain pressure.In another concrete scheme, equipped with outside compression spring, and binder ring between binder ring and upper die plate There is sealing ring side, binder ring upper end is formed pressure air chamber with the cavity inner wall of upper cut-off-die, using compression spring and compressed gas Combination binder ring is applied certain pressure to plastic sheet to be formed.

The inner edge of generally upper cut-off-die lower end is upper shearing knife edge, and the outer rim of lower cut-off-die upper end is down cut blade, down cut Blade matches with upper shearing knife edge.

The cooling-water duct for being cooled down to finishing die and formed sheet is generally additionally provided with above-mentioned lower mould.

During shaping, can above mould be fixed in frame, lower mould is lifted relative to upper mould；Mould can also be descended to be fixed on frame On, upper mould is lifted relative to lower mould.

Hot forming tool of the present utility model can manufacture the plastic containers with annular leg, and by local handling （More change sides mould and lower mold body, and hot forming tool remainder need not then be changed）, you can quickly and easily complete changing for mould Dress, is used to the plastic containers of other specifications needed for producing, and is conducive to saving equipment and cost of labor, improve production efficiency.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model preferred embodiment（Preliminary completed state）；

Fig. 2 is the enlarged drawing of part A in Fig. 1；

View when Fig. 3 is the sizing of the completion plastic containers of hot forming tool shown in Fig. 1；

Fig. 4 is the enlarged drawing of part B in Fig. 3；

View when Fig. 5 is the hot forming tool demoulding shown in Fig. 1.

Specific embodiment

As shown in figure 1, this include upper mould 1 with for manufacturing the hot forming tool of the plastic containers with annular leg Mould 2.

Upper mould 1 includes upper die plate 11 and upper cut-off-die 12, and upper cut-off-die 12 is arranged on upper die plate 11, and upper cut-off-die 12 has a chamber Body.

Upper mould 1 also includes stretching head 13, stretch rod 14, stretch rod installing plate 15 and stretch rod installing plate lifting control mechanism （Stretch rod installing plate lifting control mechanism not shown in figure）, stretching head 13 is detachably connected with the lower end of stretch rod 14, stretching head 13 in the cavity of upper cut-off-die 12, and the upper end of stretch rod 14 connects stretch rod installing plate 15, the connection stretching of stretch rod installing plate 15 Bar installing plate lifting control mechanism.Upper die plate 11 is provided with the stretch rod fairlead 16 for moving towards up and down, and stretch rod 14 is in stretching It is slidably matched in bar fairlead 16 and with stretch rod fairlead 16.Above-mentioned stretch rod installing plate lifting control mechanism can be located at upper In template；In the case where upper mould is fixed in frame, stretch rod installing plate lifting control mechanism also can be in frame.Stretching Bar installing plate lifting control mechanism is used to drive stretch rod to move up and down；Under the drive of stretch rod, stretching head can be in upper cut-off-die Cavity in move up and down.Stretch rod installing plate lifting control mechanism may include draft cylinder, the connection stretching of stretch rod installing plate The piston rod of cylinder；The cylinder body of draft cylinder can be arranged on upper die plate；In the case where upper mould is fixed in frame, gas is stretched The cylinder body of cylinder can be also arranged in frame.

Upper mould 1 also includes binder ring 17, and binder ring 17 is in the cavity of upper cut-off-die 12.Stretching head 13 is in binder ring 17 Cavity in.Binder ring 17 can move up and down in the cavity of upper cut-off-die 14, can apply pressure to plastic sheet to be formed. Compression spring 18 is housed, compression spring 18 can make binder ring 17 to be formed when shrinking between binder ring 17 and upper die plate 11 Plastic sheet applies certain pressure.

Lower mould 2 include lower template 21, lower bolster 22, cylinder barrel 23, piston 24, lower mold body 25, shaping mould, lower cut-off-die 26, under Cut-off-die installing plate 27, knock-pin 28 and raising plate 29；Lower bolster 22 is arranged in lower template 21 and is in the top of lower template 21, under Die body 25 is removably mounted on lower bolster 22 and is in the top of lower bolster 22, and lower cut-off-die installing plate 27 is removably mounted at lower mould On body 25 and it is in the top of lower mold body 25；Lower bolster 22 has cylinder barrel accommodating cavity 210, and cylinder barrel 23 is fixedly mounted on cylinder barrel accommodating cavity In 210, piston 24 is arranged in cylinder barrel 23 and can be moved up and down in cylinder barrel 23, lateral surface and the cylinder barrel 23 of piston 24 Medial surface is in sealing contact, and the top of cylinder barrel 23 is provided with the piston limit portion 211 that piston 24 can be prevented to continue to move up（Piston is limited Position portion 211 is in a ring）；Finishing die includes side mould 212, leg mould 213, leg turnover stock mould 214 and movable die block 215, side In a ring, leg mould 213 is arranged on the top of cylinder barrel 23 and is in mould 212, leg mould 213 and leg turnover stock mould 214 The top of piston limit portion 211, the leg turnover lower end of stock mould 214 and the integrally connected of piston 24, leg turnover stock mould 214 are located at The inner side of leg mould 213, movable die block 215 is located at the inner side of leg turnover stock mould 214 and is in the top of piston 24, in piston 24 Be provided with the knock-pin pilot hole 216 for moving towards up and down, knock-pin 28 is in knock-pin pilot hole 216, movable die block 215 with ejection The upper end connection of bar 28, the lower end of knock-pin 28 extend out to the lower section of lower template 21, and side mould 212 is arranged in lower mold body 25 and folds Put in the top of leg mould 213；Sealing ring 217 is provided between leg mould 213 and piston limit portion 211, the sealing ring 217 and leg The lateral surface for turning down stock mould 214 is in close contact；Raising plate 29 is provided with knock-pin location hole 218, and the lower section of knock-pin 28 is provided with Positioning guide bar 219, the positioning upper end of guide bar 219 is fixedly connected with the lower end of knock-pin 28, and positioning guide bar 219 is in knock-pin In location hole 218, the cross-sectional area of the cross-sectional area more than knock-pin location hole 218 of knock-pin 28；Lower cut-off-die 26 is installed On lower cut-off-die installing plate 27, and lower cut-off-die 26 is in the outside of side mould 212.

In the present embodiment, the cavity of cylinder barrel 23 is separated into upper air cavity 220 and lower air chamber 221 by piston 24（Outside piston 24 Sealing ring 222 is installed, the sealing ring 222 is in close contact with the medial surface of cylinder barrel 23 on side）, lower bolster 22 is provided with enterprising Outlet passageway 223, enterprising outlet passageway 223 is connected with upper air cavity 220, and lower template 21 is provided with down outlet passageway 224, under enter Outlet passageway 224 is connected with lower air chamber 221；The bottom of piston 24 is connected with the piston guide bar 225 for moving towards up and down, and piston is led Draw the lower end of bar 225 and extend out to the lower section of lower template 21, the knock-pin pilot hole 216 extends to the lower end of piston guide bar 225, lower mould Lower cover 226 is installed, lower cover 226 is close by the gap between the lateral surface of piston guide bar 225 and lower template 21 on plate 21 Envelope.

Knock-pin 28 and positioning guide bar 219 be it is cylindric, knock-pin location hole 218 be manhole, knock-pin 28 External diameter more than knock-pin location hole 218 internal diameter.The external diameter for positioning guide bar 219 is slightly less than the interior of knock-pin location hole 218 Footpath.The positioning upper end of guide bar 219 is connected with the centre of the lower surface of knock-pin 28, and the lower surface of knock-pin 28 is looped around positioning and leads Draw the part around the upper end of bar 219 and constitute a ring surface, the ring surface is used for the upper surface with raising plate 29.

With reference to Fig. 2 and Fig. 4, in the present embodiment, the top 2131 of the medial surface of leg mould 213 gradually leans outward from top to bottom Tiltedly, the bottom 2132 of the medial surface of leg mould 213 is gradually tilted from top to bottom, the lateral surface at the top of leg turnover stock mould 214 2141 is gradually outward-dipping from top to bottom.The top of lateral surface 2141 and leg mould medial surface at the top of leg turnover stock mould 2131 shapes match, and are dimensioned slightly smaller than the top 2131 of leg mould medial surface.

The upper surface of piston 24 is provided with the first cushion pad 227 being made up of nylon.The upper surface of lower template 21 is provided with The second cushion pad 228 being made up of nylon, the second cushion pad 228 is in the underface of piston 24.

The lead column 229 moved towards up and down is installed with lower template 21, raising plate 29 is provided with raising plate pilot hole 230, raising plate 29 is socketed in lead column 229 by raising plate pilot hole 230 and is slidably matched with lead column 229.

The lower surface of binder ring 17 matches with the upper surface of lower cut-off-die 26 and position is corresponding.

The inner edge of the lower end of upper cut-off-die 12 is upper shearing knife edge, and the outer rim of the lower upper end of cut-off-die 26 is down cut blade, down cut Blade matches with upper shearing knife edge.

The cooling-water duct for being cooled down to finishing die and formed sheet can be also provided with lower mould 2.

The operation principle of brief description once this hot forming tool：

In this hot forming tool, side mould 212 is used for side wall, the marginal portion of molded plastic container, and movable die block 215 is used for The shaping of plastic containers bottom, leg mould 213 and leg turnover stock mould 214 are provided commonly for the shaping of annular leg.

During manufacture plastic containers, plastic sheet is heated first, plastic sheet is reached forming temperature；With reference to Fig. 1 and Tu 2, by the plastic sheet of heating by forming area, hot forming tool matched moulds, compression spring 18 applies downwards to binder ring 17 Thrust, make binder ring 17 that sheet material is pressed on the upper surface of lower cut-off-die 26, plastic sheet and upper cut-off-die 23 cavity it Between form shaping air chamber, now piston 24 drops to low level, and leg turnover stock mould 214 and movable die block 215 are with dropping to Low level, the inner surface of side mould 212, the medial surface of leg mould 213, leg turn down upper surface and the movable die block 215 of stock mould 214 Upper surface surround shaping mold cavity jointly；Then stretch rod installing plate lifting control mechanism drives stretch rod installing plate 15 to decline, Stretch rod installing plate 15, stretch rod 14, stretching head 13 decline together, and stretching head 13 is pre-stretched to plastic sheet；Then press Contracting air enters in above-mentioned shaping air chamber, and in the presence of compressed air, plastic sheet is close to the inwall of shaping mold cavity, makes plastics Sheet material completes just one-step forming, obtains con-tainer blanks 3；

With reference to Fig. 3 and Fig. 4, subsequent piston 24 rises, and drives leg to turn down stock mould 214 and movable die block 215 together Rise（Now the lower end of knock-pin 28 disengages with the upper surface of raising plate 29）, the bottom of con-tainer blanks 3 is raised to pre-determined bit Put, meanwhile, in the presence of leg turnover stock mould 214, con-tainer blanks 3 are attached to the upward doubling in part of the medial surface of leg mould 214, And doubling position is clamped by leg mould 213 and leg turnover stock mould 214 jointly and it is clinged（Con-tainer blanks 3 are attached to leg mould Part 32 on 213 medial surface bottoms 2132 is uncovered by leg turnover stock mould 214, and is attached in leg mould 213 with con-tainer blanks 3 The doubling of part 31 in side surface upper part 2131, this two parts 32,31 leg turnover stock mould 214 top lateral surface 2141 with Clinged under the collective effect on the top 2131 of the medial surface of leg mould 213）, annular leg 33 is formed, complete the sizing of plastic containers； Subsequent stretch rod installing plate lifting control mechanism drives stretch rod installing plate 15, stretch rod 14, stretching head 13 to rise together, stretches In first 13 cavitys for returning back to cut-off-die 12；Then descend mould 2 further up, the down cut blade of the upper end outer rim of lower cut-off-die 26 with The upper shearing knife edge of the lower end inner edge of upper cut-off-die 12 coordinates, and the formed sheet after setting is sheared, by plastic containers from shaping It is cut out coming in sheet material, obtains single plastic containers；Then lower mould 2 declines, and the edge of plastic containers leaves binder ring 17；

With reference to Fig. 5, then, piston 24 and leg turnover stock mould 214 drop to low level, and raising plate 29 rises and drives Knock-pin 28 and movable die block 215 rise（The now upper surface of the lower end of knock-pin 28 and raising plate 29）, by plastic containers Ejection；Then can be dried to plastic containers, plastic containers be blown off hot forming tool, so as to complete one-step hot moulding process.With Raising plate 29 declines afterwards, and movable die block 215 drops to position needed for shaping（Movable die block 242 and top can be made by Action of Gravity Field Rod 28 declines）, prepare thermoforming process next time.

This hot forming tool is equipped with multiple sides mould 212 and lower mold body 25（The height of lower mold body 25 and the corresponding phase of side mould 212 Matching）, can be used for the production of various plastic containers, a kind of plastic containers of each side mould 212 correspondence；Movable die block 215, leg mould 213rd, leg turnover stock mould 214 only configures a set of, can be supporting with each side mould 212.When repacking hot forming tool is needed, Only need to more be changed sides mould 212 and lower mold body 25, and hot forming tool remainder need not then be changed.Side mould 212 and lower mold body 25 Replacing options are as follows：Lower cut-off-die installing plate 27 and lower cut-off-die 26 are first unloaded, original lower mold body 25 and side mould 212 is then unloaded； New lower mold body 25 and side mould 212 are installed to above lower bolster 22, leg mould 213 again, are then reinstalled lower cut-off-die and are installed Plate 27 and lower cut-off-die 26.

Claims (10)

1. a kind of hot forming tool for manufacturing the plastic containers with annular leg, including upper die and lower die；Upper mould includes Upper die plate and upper cut-off-die, upper cut-off-die are arranged on upper die plate, and upper cut-off-die has a cavity, it is characterized in that：Under the lower mould includes Template, lower bolster, cylinder barrel, piston, lower mold body, shaping mould, lower cut-off-die, lower cut-off-die installing plate, knock-pin and raising plate；Lower bolster In lower template and be in lower template top, lower mold body be removably mounted on lower bolster and be in lower bolster top, under Cut-off-die installing plate is removably mounted in lower mold body and is in lower mold body top；Lower bolster has cylinder barrel accommodating cavity, and cylinder barrel is fixed In cylinder barrel accommodating cavity, piston is arranged in cylinder barrel and can be moved up and down in cylinder barrel, the lateral surface and cylinder of piston The medial surface of cylinder is in sealing contact, and cylinder barrel top is provided with the piston limit portion that piston can be prevented to continue to move up；Finishing die bag Side mould, leg mould, leg turnover stock mould and movable die block are included, Bian Mo, leg mould and leg turnover stock mould in a ring, are propped up Pin mould is arranged on cylinder barrel top and is in piston limit portion top, and leg turns down stock mould lower end and piston integrally connected, branch Pin turnover stock mould is located at leg mould inner side, and movable die block is located at leg turnover stock mould inner side and is in piston top, living The knock-pin pilot hole for moving towards up and down is provided with plug, knock-pin is in knock-pin pilot hole, and movable die block is upper with knock-pin End connection, the lower end of knock-pin extend out to lower template lower section, and side mould is arranged in lower mold body and is stacked in leg mould top；Branch Sealing ring is provided between pin mould and piston limit portion, the sealing ring is in close contact with the lateral surface of leg turnover stock mould；Jacking Plate is provided with knock-pin location hole, and knock-pin lower section is provided with positioning guide bar, and positioning guide bar upper end is fixed with knock-pin lower end Connection, positioning guide bar is in knock-pin location hole, the cross section of the cross-sectional area more than knock-pin location hole of knock-pin Area；Lower cut-off-die is arranged on lower cut-off-die installing plate, and lower cut-off-die is in the outside of side mould.

2. hot forming tool according to claim 1, it is characterised in that：The cavity of cylinder barrel is separated into upper gas by the piston Chamber and lower air chamber, lower bolster are provided with enterprising outlet passageway, and enterprising outlet passageway is connected with upper air cavity, and lower template is provided with down Outlet passageway, under enter outlet passageway and connected with lower air chamber；Piston base is connected with the piston guide bar for moving towards up and down, piston Guide bar lower end extend out to lower template lower section, and the knock-pin pilot hole extends to piston guide bar lower end, is installed in lower template There is a lower cover, lower cover is by the clearance seal between the lateral surface and lower template of piston guide bar.

3. hot forming tool according to claim 1, it is characterised in that：The knock-pin and positioning guide bar are cylinder Shape, knock-pin location hole is manhole, the internal diameter of the external diameter more than knock-pin location hole of knock-pin.

4. hot forming tool according to claim 1, it is characterised in that：The top of the leg mould medial surface is from top to bottom Gradually outward-dipping, the bottom of leg mould medial surface is gradually tilted from top to bottom, the lateral surface at the top of leg turnover stock mould It is gradually outward-dipping from top to bottom.

5. hot forming tool according to claim 1, it is characterised in that：The upper surface of the piston is provided with by nylon system Into the first cushion pad.

6. hot forming tool according to claim 1, it is characterised in that：The upper surface of the lower template is provided with by nylon The second cushion pad being made, the second cushion pad is in the underface of piston.

7. the hot forming tool according to claim any one of 1-6, it is characterised in that：It is installed with the lower template The lead column moved towards up and down, raising plate is provided with raising plate pilot hole, and raising plate is socketed in lead column by raising plate pilot hole It is slidably matched above and with lead column.

8. the hot forming tool according to claim any one of 1-6, it is characterised in that：The upper mould also include stretching head, Stretch rod, stretch rod installing plate and stretch rod installing plate lifting control mechanism, stretching head are detachably connected with stretch rod lower end, draw Extension head in the cavity of upper cut-off-die, install by stretch rod upper end connection stretch rod installing plate, stretch rod installing plate connection stretch rod Plate lifting control mechanism.

9. hot forming tool according to claim 8, it is characterised in that：The upper die plate is provided with the stretching moved towards up and down Bar fairlead, stretch rod is in stretch rod fairlead and is oriented to interplanting with stretch rod and is slidably matched.

10. the hot forming tool according to claim any one of 1-6, it is characterised in that：The upper mould also includes binder ring, Binder is located in the cavity of cut-off-die, and the lower surface of binder ring matches and position phase with the upper surface of lower cut-off-die or side mould Correspondence.