CN114103026A - Secondary ejection die for screw cap - Google Patents

Abstract

The application relates to a secondary ejection die for a screw cap, which relates to the field of injection dies and comprises a mounting seat, an upper die and a lower die, wherein the lower die comprises a top plate and a push plate; the mounting seat is provided with a secondary ejection mechanism, and the secondary ejection mechanism comprises a bottom plate, an ejector rod, a pushing piece and an elastic ejection piece. When preparing the spiral cover, pour into the material into the pouring passageway into, treat the spiral cover shaping back, will go up the mould and remove and keep away from the lower mould, make the injection molding material in the pouring runner and the spiral cover in the die cavity cut off, then remove the bottom plate and be close to last mould, it staggers to drive impeller and elasticity ejecting, at this moment, the push pedal stop motion, the bottom plate drives the roof and continues to remove and be close to last mould, thereby it breaks away from the pull rod and collects to drive the injection molding material, then take out the spiral cover from the die cavity can again, follow-up need not letter sorting spiral cover and injection molding material, it is more convenient to make the spiral cover.

Description

Secondary ejection die for screw cap

Technical Field

The application relates to the field of injection molds, in particular to a secondary ejection mold for a rotary cover.

Background

The screw cap is a member screwed to a mouth of a bottle container to seal the bottle container.

The spiral cover is generally manufactured by one-time ejection and demolding of an injection mold, in order to improve the processing efficiency of the spiral cover, a plurality of spiral covers are formed by one-time injection molding, the spiral covers are connected through injection molding materials, and after demolding, the spiral cover and the injection molding materials are separated and discharged together, so that the injection molding materials and the spiral covers need to be sorted subsequently, and the spiral cover is troublesome and needs to be improved.

Disclosure of Invention

Need sort the injection molding material and the more troublesome problem of spiral cover in order to improve after moulding plastics, this application provides a spiral cover quadratic term ejection mould.

The application provides a spiral cover secondary ejection mould adopts following technical scheme:

a secondary ejection die for a spiral cover comprises a mounting seat, an upper die and a lower die, wherein the upper die and the lower die are connected to the mounting seat in a sliding mode, the lower die comprises a top plate and a push plate, the top plate and the upper die are spliced to form a pouring runner, a plurality of cavities communicated with the pouring runner are formed between the top plate and the upper die, the push plate is located on one side, away from the upper die, of the top plate, a pull rod is arranged on the push plate, and the pull rod extends into the pouring runner;

the secondary ejection mechanism comprises a bottom plate, an ejector rod, an ejector piece and an elastic ejection piece, the bottom plate is connected to the mounting seat in a sliding mode, the ejector rod is arranged on the bottom plate, the ejector rod is arranged on the ejector plate, the elastic ejection piece is arranged on the ejector plate, the bottom plate is located on one side, away from the top plate, of the ejector plate, the ejector rod is connected with the top plate, the ejector piece is abutted to the elastic ejection piece, and the ejector piece moves close to the upper die, so that the elastic ejection piece moves close to the ejector plate.

Through adopting the above technical scheme, when preparing the spiral cover, pour into the material into the pouring passageway, the material gets into the die cavity with the shaping spiral cover, treat the spiral cover shaping back, will go up the mould and remove and keep away from the lower mould, it cuts off to drive the local removal of pouring runner and make the injection molding material in the pouring runner and the spiral cover in the die cavity, then remove the bottom plate and be close to last mould, the bottom plate drives the impeller and removes, it is close to the push pedal to make elasticity liftout piece remove, stagger to impeller and elasticity liftout piece, at this moment, the push pedal stop movement, the bottom plate drives the roof through the ejector pin and continues to remove and be close to last mould, thereby it breaks away from and can collect the injection molding material from the pull rod to drive the injection molding material, then with the spiral cover follow-up from the die cavity take out can, follow-up need not to sort spiral cover and injection molding material, make the preparation spiral cover more convenient.

Preferably, the mounting seat is provided with an ejector pin, the ejector pin extends into the top plate, the push plate is provided with a sizing sleeve block, the sizing sleeve block comprises a plurality of sizing blocks connected to the push plate in a sliding manner, and the plurality of sizing blocks are distributed around the periphery of the ejector pin; every all be equipped with the spout on the design piece, be equipped with a plurality of strips that slide on the thimble, the strip that slides slide connect in the spout, it is a plurality of the strip that slides towards being close to go up the direction internal inclination of mould, the die cavity passes through go up the mould the roof the thimble with design cover piece concatenation forms.

By adopting the above technical scheme, set up the thimble, the shaping piece, strip and spout slide, after injection molding material and spiral cover cut off, move the bottom plate and be close to last mould, drive roof and push pedal removal, at this moment, the thimble moves towards the direction of keeping away from last mould for roof and push pedal, through the inner wall of strip butt in the spout that slides, thereby it moves and is close to drive a plurality of shaping pieces, make the spiral cover of a plurality of shaping pieces and die cavity break away from, so that the spiral cover drawing of patterns drops and collects, stagger to impeller and elasticity ejecting, the bottom plate continues to move, it is close to last mould to drive the roof to continue to move, thereby it breaks away from to drive the injection molding material from the pull rod, can realize taking out in proper order of spiral cover and injection molding material, need not manually take off the spiral cover from the shaping piece, and follow-up need not to sort spiral cover and injection molding material, it is more convenient to make the spiral cover preparation.

Preferably, a first through hole is formed in the push plate and used for the thimble to penetrate, a limiting groove is formed in the inner wall of the first through hole, the shaping block comprises an abutting portion and a limiting portion, the sliding strip is arranged on the abutting portion, and the limiting portion is connected to the limiting groove in a sliding manner.

Through adopting above-mentioned technical scheme, when the thimble takes place to remove for the roof, drive the shaping piece and take place to remove, inner wall butt through the spacing groove in spacing portion to spacing to the shaping piece carries out spacingly, with the condition that reduces the shaping piece and take place axial displacement, make it more convenient to remove the thimble and drive the shaping piece and take place to remove.

Preferably, the pushing part comprises a pushing block arranged on the bottom plate and a fixed block arranged on the pushing plate, a holding groove is formed in the fixed block, the pushing block extends into the holding groove and abuts against the elastic ejecting part, an inclined surface is arranged on the inner wall of the holding groove, the inclined surface is located on one side, away from the pushing block, of the elastic ejecting part, and the distance between the inclined surface and the pushing plate is gradually shortened towards the direction close to the upper die.

Through adopting above-mentioned technical scheme, it is close to last mould to remove the bottom plate, the bottom plate passes through the ejector pin and drives the roof removal, and simultaneously, the ejector pad butt takes place to remove in elasticity ejecting and promotion elasticity ejecting, and then drive the push pedal and remove, make the thimble drive a plurality of design pieces and remove and take off the spiral cover from the type intracavity, to elasticity ejecting butt in inclined plane, the ejector pad continues to move and is close to last mould, make elasticity ejecting move gradually along the inclined plane and be close to the push pedal, stagger to elasticity ejecting and ejector pad, at this moment, the push pedal stop motion, the roof continues to move and is close to last mould, make the injection molding break away from the pull rod, realize that the quadratic term is ejecting.

Preferably, the elastic ejection part comprises an elastic part arranged on the push plate and a butt joint block arranged on the elastic part, the butt joint block is located on one side, away from the push plate, of the elastic part, and the push block abuts against the butt joint block.

Through adopting above-mentioned technical scheme, set up elastic component and butt piece, after butt piece butt in the inclined plane, the ejector pad butt in the butt piece and continue to move and be close to the mould, the butt piece moves and extrudees the elastic component towards the direction that is close to the push pedal along the inclined plane, when the ejector pad returns back, the butt piece pops out under the effect that the elastic component resets for the ejector pad continues the butt in the butt piece keep away from one side of mould, so that follow-up continuation realizes that the secondary is ejecting.

Preferably, the pouring runner includes a main runner and a plurality of auxiliary runners communicated with the main runner, the plurality of auxiliary runners are in one-to-one correspondence with the cavities and are communicated with the cavities, the auxiliary runners include discharge sections, the discharge sections are located at ends of the auxiliary runners, which are close to the cavities, and the discharge sections are gradually reduced towards directions close to the cavities.

Through adopting above-mentioned technical scheme, set up sprue, vice runner and ejection of compact section, reduced the junction size between the spiral cover in injection molding material in the pouring runner and the die cavity for it changes when keeping away from the lower mould to go up the mould and is cut off between injection molding material and the spiral cover.

Preferably, the distance between the discharging section and the corresponding cavity is gradually shortened towards the direction close to the upper die.

Through adopting above-mentioned technical scheme for one side that is located the ejection of compact section and is close to the lower mould is formed with the stripping and slicing of triangle-shaped form, so that go up the mould and remove when keeping away from the lower mould and cut off the junction between injection molding material and the spiral cover.

Preferably, a groove is formed in the outer side wall of the pull rod, and the groove is located on one side of the pull rod and located in the pouring runner.

Through adopting above-mentioned technical scheme, set up the recess, during the pouring material, the material is filled in the recess, treats after the material solidification, is caught between the material of solidification and the pull rod to when going up the mould and removing and keeping away from the lower mould, the injection molding material in the pouring runner is withheld to the pull rod, makes the junction between injection molding material and the spiral cover more easily cut off.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the pull rod and the secondary ejection mechanism, when the screw cap is prepared, materials are injected into the pouring channel, after the screw cap is formed, the upper die is moved away from the lower die, so that injection molding materials in the pouring channel and the screw cap in the cavity are cut off, then the bottom plate is moved close to the upper die, the pushing piece and the elastic ejection piece are driven to be staggered, at the moment, the push plate stops moving, the bottom plate drives the top plate to continuously move close to the upper die, so that the injection molding materials are driven to be separated from the pull rod for collection, then the screw cap is taken out of the cavity, and the screw cap and the injection molding materials do not need to be sorted subsequently, so that the screw cap is more convenient to prepare;

2. by arranging the ejector pins, the forming blocks, the sliding strips and the sliding grooves, after the injection molding material and the screw cap are cut off, the bottom plate is moved to be close to the upper die, the ejector pins move relative to the top plate and the push plate in the direction away from the upper die, so that the plurality of shaping blocks and the screw cap in the cavity are separated, then the bottom plate continues to move to drive the injection molding material to be separated from the pull rod, the screw cap and the injection molding material can be taken out successively, the screw cap does not need to be taken off from the shaping blocks manually, and the screw cap and the injection molding material do not need to be sorted subsequently, so that the screw cap is more convenient to prepare;

3. through setting up the ejection of compact section, reduced the junction size between the spiral cover in injection molding material in the pouring runner and the die cavity for one side that is located the ejection of compact section and is close to the lower mould is formed with the stripping and slicing of triangle form, so that go up the mould and remove when keeping away from the lower mould and cut off the junction between injection molding material and the spiral cover.

Drawings

FIG. 1 is an overall schematic view of an embodiment of the present application;

fig. 2 is an exploded view of the embodiment of the present application, mainly showing the structure of the lower mold;

fig. 3 is a cross-sectional view of an embodiment of the present application, mainly illustrating the structure of the secondary ejection mechanism;

FIG. 4 is an enlarged view of portion A of FIG. 3, mainly illustrating the structure of the recess;

FIG. 5 is a partial cross-sectional view of the embodiment of the present application, mainly illustrating the structure of the sliding strip and the sliding groove;

FIG. 6 is a cross-sectional view of another aspect of the embodiment of the present application, showing primarily the configuration of the mold cavity;

fig. 7 is an enlarged view of a portion B of fig. 6, mainly showing the structure of the discharging section.

Description of reference numerals: 1. a mounting seat; 2. an upper die; 21. a pouring gate; 3. a lower die; 31. a top plate; 311. a second through hole; 32. pushing the plate; 321. a first through hole; 3211. a limiting groove; 322. caulking grooves; 4. pouring a runner; 41. a main flow channel; 42. a secondary flow passage; 421. a discharging section; 5. a pull rod; 51. a groove; 6. a thimble; 7. shaping a sleeve block; 71. a shaping block; 711. an abutting portion; 712. a limiting part; 8. a sliding strip; 81. a chute; 9. a cavity; 10. cutting into blocks; 11. a secondary ejection mechanism; 111. a base plate; 112. a top rod; 113. a pusher member; 1131. a push block; 1132. a fixed block; 114. an elastic ejector; 1141. an elastic member; 1142. a butting block; 12. accommodating grooves; 121. an inclined surface; 13. a bevel.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses spiral cover secondary ejection die. Referring to fig. 1, the secondary ejection die for the screw cap comprises a mounting seat 1, an upper die 2 and a lower die 3, wherein the upper die 2 is located on one side of the lower die 3 in the horizontal direction, the upper die 2 and the lower die 3 are connected to the mounting seat 1 in a sliding mode, and the sliding directions of the upper die 2 and the lower die 3 are located on the same horizontal direction. In practical use, the mounting seat 1 can be mounted on a corresponding driving device to drive the upper die 2 to slide.

Referring to fig. 2 and 3, the lower die 3 includes a top plate 31 and a push plate 32, the top plate 31 is located on one side of the push plate 32 close to the upper die 2, and the top plate 31 is embedded in the push plate 32. Go up mould 2 and roof 31 concatenation and be formed with pouring runner 4, pouring runner 4 includes sprue 41 and a plurality of runner 42, and the one end of a plurality of runner 42 all communicates with sprue 41, goes up mould 2 and has seted up sprue gate 21 on keeping away from the lateral wall of lower mould 3, and sprue gate 21 and sprue gate 41 keep away from the one end intercommunication of push pedal 32.

Referring to fig. 3 and 4, a plurality of pull rods 5 are fixed on the push plate 32, the pull rods 5 are all located on one side of the push plate 32 close to the top plate 31 and are distributed at intervals, and the pull rods 5 are all sequentially penetrated through the push plate 32 and the top plate 31 towards the direction close to the upper die 2 and extend into the pouring runner 4. The outer side wall of each pull rod 5 is provided with a groove 51, the groove 51 is a ring groove, and the groove 51 is positioned in the pouring runner 4 and arranged around the periphery of the pull rod 5.

Referring to fig. 5, a plurality of ejector pins 6 are fixed on the outer side wall of the mounting seat 1, the ejector pins 6 are all located on one side of the push plate 32 away from the top plate 31, and the ejector pins 6 are all sequentially penetrated through the push plate 32 and the top plate 31 towards the direction close to the upper die 2 and extend into the top plate 31.

Referring to fig. 5, a plurality of first through holes 321 are formed in the outer side wall of the push plate 32, the number and the positions of the plurality of first through holes 321 correspond to those of the ejector pins 6 one by one, and the first through holes 321 are provided for the corresponding ejector pins 6 to penetrate through. The push plate 32 is further provided with a plurality of sizing sleeve blocks 7, the number and the positions of the sizing sleeve blocks 7 correspond to those of the first through holes 321 one by one, and the sizing sleeve blocks 7 are located in the corresponding first through holes 321. The outer side wall of the top plate 31 is provided with a plurality of second through holes 311, the number and the positions of the second through holes 311 correspond to those of the first through holes 321 one by one, and the second through holes 311 are penetrated by the corresponding ejector pins 6 and the sizing sleeve block 7.

Referring to fig. 5, each of the sizing sleeve blocks 7 includes a plurality of sizing blocks 71, the plurality of sizing blocks 71 are circumferentially and uniformly distributed around the periphery of the corresponding thimble 6 at intervals, the plurality of sizing blocks 71 are slidably connected to the push plate 32, and the sliding directions of the plurality of sizing blocks 71 are close to or far away from each other along the radial direction. Each of the fixing blocks 71 includes an abutting portion 711 and a limiting portion 712, the abutting portion 711 is located in the first through hole 321, and the limiting portion 712 is located on a side where the abutting portions 711 are far away from each other and is fixedly connected with the abutting portion 711.

Referring to fig. 5, a plurality of limiting grooves 3211 are formed in the inner wall of the first through hole 321, the positions and the number of the limiting grooves 3211 correspond to the positions and the number of the limiting portions 712 in the first through hole 321 one by one, the limiting grooves 3211 are provided for the corresponding limiting portions 712 to be clamped in, and the limiting portions 712 are slidably connected in the limiting grooves 3211 and attached to the inner wall of the limiting grooves 3211.

Referring to fig. 5, each abutting portion 711 is far away from the outer side wall of the limiting portion 712, and is provided with a sliding groove 81, the outer side wall of the thimble 6 is fixed with a plurality of sliding strips 8, the positions and the number of the sliding strips 8 correspond to the positions and the number of the sliding grooves 81 in the through hole 321 one by one, the sliding strips 8 incline towards the direction close to the upper die 2, each sliding groove 81 runs through the corresponding abutting portion 711 along the length direction of the corresponding sliding strip 8, and the sliding strips 8 are connected in the corresponding sliding grooves 81 in a sliding manner. In this embodiment, the sliding groove 81 is a dovetail groove, the sliding strip 8 is attached to the inner wall of the sliding groove 81, and the sliding strip 8 and the ejector pin 6 are integrally disposed.

Referring to fig. 5 and 6, the sizing sleeve block 7, the thimble 6, the upper die 2 and the top plate 31 are spliced to form a plurality of cavities 9, the cavities 9 are located between the upper die 2 and the top plate 31, the positions and the number of the cavities 9 correspond to the positions and the number of the auxiliary runners 42 one by one, and the cavities 9 are communicated with the corresponding auxiliary runners 42.

Referring to fig. 6 and 7, each secondary flow passage 42 has a discharging section 421, the discharging section 421 is located at one end of the secondary flow passage 42 close to the corresponding cavity 9, the distance between the discharging section 421 and the corresponding cavity 9 gradually decreases toward the direction close to the upper die 2, and the discharging section 421 gradually decreases toward the direction close to the corresponding cavity 9. The upper die 2 located on the side of the discharging section 421 near the top plate 31 is partially formed with a cut 10.

Referring to fig. 3, the mounting base 1 is further provided with a secondary ejection mechanism 11, the secondary ejection mechanism 11 includes a bottom plate 111, a plurality of ejector rods 112, two pushing pieces 113 and two elastic ejection pieces 114, the bottom plate 111 is located on one side of the pushing plate 32 away from the top plate 31 and connected to the mounting base 1 in a sliding manner, the sliding direction of the bottom plate 111 is parallel to the sliding direction of the upper die 2, the plurality of ejector rods 112 are located on one side of the bottom plate 111 close to the top plate 31 and fixedly connected with the bottom plate 111, and the plurality of ejector rods 112 penetrate through the pushing plate 32 and the top plate 31 towards the direction close to the top plate 31 and are fixedly connected with the top plate 31. In actual use, the base plate 111 is driven to slide by installing a driving device on the mounting base 1.

Referring to fig. 3, two impeller 113 are located the relative both sides of bottom plate 111 glide direction respectively, every impeller 113 all includes ejector pad 1131 and fixed block 1132, ejector pad 1131 and bottom plate 111 fixed connection, fixed block 1132 is located ejector pad 1131 and is close to one side of last mould 2 and with push pedal 32 fixed connection, fixed block 1132 has seted up holding tank 12 on being close to the lateral wall of push pedal 32, ejector pad 1131 wears to locate fixed block 1132 and stretches into in holding tank 12 towards the direction that is close to fixed block 1132.

Referring to fig. 3, the positions of the two elastic ejecting elements 114 correspond to the positions of the two pushing elements 113 one by one, the outer side wall of the pushing plate 32 is provided with two caulking grooves 322, the positions of the two caulking grooves 322 correspond to the positions of the two elastic ejecting elements 114 one by one, each elastic ejecting element 114 comprises an elastic element 1141 and an abutting block 1142, the elastic element 1141 is located in the corresponding caulking groove 322 and fixedly connected with the inner wall of the bottom of the corresponding caulking groove 322, the abutting block 1142 is located on one side of the elastic element 1141 away from the bottom of the caulking groove 322 and fixedly connected with the elastic element 1141, the abutting block 1142 is located in the accommodating groove 12 corresponding to the fixing block 1132, and the pushing block 1131 is located on one side of the abutting block 1142 away from the upper die 2 and abuts against the abutting block 1142. In this embodiment, the elastic member 1141 is a spring.

Referring to fig. 3, the inner wall of the receiving groove 12 is formed with an inclined surface 121, the inclined surface 121 is located on a side of the abutment block 1142 close to the upper die 2, and a distance between the inclined surface 121 and the push plate 32 is gradually shortened toward the upper die 2.

Referring to fig. 3, a slope 13 is formed on the outer side wall of the abutment block 1142, the slope 13 is located on one side of the abutment block 1142 close to the upper die 2, and the slope direction of the slope 13 is parallel to the slope direction of the slope 121 in the receiving groove 12.

The implementation principle of the secondary ejection die for the screw cap in the embodiment of the application is as follows:

when the screw cap is prepared, materials are injected into the pouring channel, enter the cavity 9 to form the screw cap, after the screw cap is formed, the upper die 2 is moved to be away from the lower die 3, the upper die 2 drives the pouring channel 4 to move locally, and therefore the injection molding materials and the screw cap in the cavity 9 are cut off by the cutting block 10.

Then move bottom plate 111 and be close to last mould 2, bottom plate 111 drives ejector pin 112 and ejector pad 1131 and moves, and ejector pin 112 drives roof 31 and moves, and ejector pad 1131 butt in butt block 1142, and then drives push pedal 32 and move for ejector pin 6 moves towards the direction of keeping away from last mould 2 for push pedal 32 and roof 31, drives a plurality of design blocks 71 through the cooperation of strip 8 that slides and spout 81 and is close to each other and then breaks away from the spiral cover in the die cavity 9, so that the spiral cover drops and collects.

Then continue to move bottom plate 111 towards the direction that is close to last mould 2, drive ejector 1131 and move and be close to last mould 2, make butt block 1142 butt inclined plane 121 in holding tank 12, butt block 1142 moves and is close to caulking groove 322 tank bottom and extrudes elastic component 1141 along inclined plane 121, stagger to ejector 1131 and butt block 1142, at this moment, push pedal 32 and pull rod 5 stop moving, roof 31 continues to move under the top of ejector pin 112, thereby take off the injection molding material from pull rod 5, need not to manually take off the spiral cover from design piece 71, and follow-up need not to sort spiral cover and injection molding material, make the preparation spiral cover more convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a spiral cover secondary ejection die, include mount pad (1), slide connect in last mould (2) and lower mould (3) on mount pad (1), its characterized in that: the lower die (3) comprises a top plate (31) and a push plate (32), the top plate (31) and the upper die (2) are spliced to form a pouring runner (4), a plurality of cavities (9) communicated with the pouring runner (4) are formed between the top plate (31) and the upper die (2), the push plate (32) is located on one side, away from the upper die (2), of the top plate (31), a pull rod (5) is arranged on the push plate (32), and the pull rod (5) extends into the pouring runner (4);

the secondary ejection mechanism (11) is arranged on the mounting seat (1), the secondary ejection mechanism (11) comprises a bottom plate (111) connected to the mounting seat (1) in a sliding manner, an ejector rod (112) arranged on the bottom plate (111), a pushing piece (113) and an elastic ejection piece (114) arranged on the pushing plate (32), the bottom plate (111) is located on one side, away from the top plate (31), of the pushing plate (32), the ejector rod (112) is connected with the top plate (31), the pushing piece (113) abuts against the elastic ejection piece (114), and the pushing piece (113) moves close to the upper die (2), so that the elastic ejection piece (114) moves close to the pushing plate (32).

2. The screw cap double ejection die of claim 1, wherein: the mounting seat (1) is provided with an ejector pin (6), the ejector pin (6) extends into the top plate (31), the push plate (32) is provided with a sizing sleeve block (7), the sizing sleeve block (7) comprises a plurality of sizing blocks (71) connected to the push plate (32) in a sliding manner, and the plurality of sizing blocks (71) are distributed around the periphery of the ejector pin (6);

every all be equipped with spout (81) on stereotype piece (71), be equipped with a plurality of strips (8) that slide on thimble (6), slide strip (8) slide connect in spout (81), it is a plurality of slide strip (8) are towards being close to go up the direction internal inclination of mould (2), die cavity (9) are passed through go up mould (2) roof (31) thimble (6) with stereotype set piece (7) concatenation forms.

3. The screw cap double ejection die of claim 2, wherein: the ejector pin fixing device is characterized in that a first through hole (321) is formed in the push plate (32), the first through hole (321) is used for the ejector pin (6) to penetrate through, a limit groove (3211) is formed in the inner wall of the first through hole (321), the shaping block (71) comprises a butting portion (711) and a limit portion (712), the sliding strip (8) is arranged on the butting portion (711), and the limit portion (712) is connected in the limit groove (3211) in a sliding mode.

4. The screw cap double ejection die of claim 1, wherein: the pushing piece (113) comprises a pushing block (1131) arranged on the bottom plate (111) and a fixing block (1132) arranged on the pushing plate (32), an accommodating groove (12) is formed in the fixing block (1132), the pushing block (1131) extends into the accommodating groove (12) and abuts against the elastic ejecting piece (114), an inclined surface (121) is arranged on the inner wall of the accommodating groove (12), the inclined surface (121) is located on one side, away from the pushing block (1131), of the elastic ejecting piece (114), and the distance between the inclined surface (121) and the pushing plate (32) is gradually shortened towards the direction close to the upper die (2).

5. The screw cap double ejection die of claim 4, wherein: the elastic ejection piece (114) comprises an elastic piece (1141) arranged on the push plate (32) and a butting block (1142) arranged on the elastic piece (1141), the butting block (1142) is located on one side, away from the push plate (32), of the elastic piece (1141), and the push block (1131) butts against the butting block (1142).

6. The screw cap double ejection die of claim 1, wherein: pouring runner (4) include sprue (41) and with a plurality of vice runners (42) of sprue (41) intercommunication, it is a plurality of vice runner (42) with cavity (9) one-to-one and intercommunication, vice runner (42) have ejection of compact section (421), ejection of compact section (421) are located vice runner (42) are close to the correspondence the one end of cavity (9), ejection of compact section (421) are towards being close to the correspondence the direction of cavity (9) reduces gradually.

7. The screw cap double ejection die of claim 6, wherein: the distance between the discharge section (421) and the corresponding cavity (9) is gradually shortened towards the direction close to the upper die (2).

8. The screw cap double ejection die of claim 1, wherein: a groove (51) is formed in the outer side wall of the pull rod (5), and the groove (51) is located on one side of the pull rod (5) and located in the pouring runner (4).

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