CN116001213A - Mould - Google Patents

Abstract

The invention discloses a die, which comprises a fixed die and a movable die, wherein the fixed die comprises a template group, an A plate capable of moving relative to the template group and at least one forming assembly, the template group is provided with a glue outlet, the A plate is provided with a concave cavity facing one side of the template group and a containing cavity far away from one side of the template group and communicated with the concave cavity, and the forming assembly is elastically arranged in the concave cavity and can be partially exposed outside the A plate; the movable mould is detachably connected with the plate A, in a mould closing state, the template group is attached to the plate A and props against the forming assembly in the concave cavity, the inner wall of the accommodating cavity, the forming assembly and the movable mould are enclosed to form a product cavity communicated with the glue outlet, and the product cavity is provided with a mould wall for forming the back-off; in the mold opening state, the mold plate group is separated from the A plate, and the molding assembly part is exposed out of the A plate. According to the invention, the forming assembly is arranged in the die, and the size of the forming assembly is smaller than that of a traditional conventional shifting block and a conventional sliding block, so that the whole die is also small in size, and the injection molding machine with smaller power is required to drive.

Description

Mould

Technical Field

The invention relates to the technical field of mold structures, in particular to a mold.

Background

In injection molding, it is often necessary to mold a plurality of products with inverted buckles at one time, and the molding methods for such products are relatively common in the market: as shown in fig. 1 to 4, a plurality of conventional shift blocks 11 and a plurality of conventional slide blocks 12 are adopted in a conventional mold 10, the conventional shift blocks 11 are arranged on a conventional fixed mold 13, the conventional shift blocks 11 are similar to the action of inclined guide posts, the conventional slide blocks 12 are slidably arranged on a conventional movable mold, four conventional shift blocks 11 and two conventional slide blocks 12 are combined, when the mold is closed, the four conventional shift blocks 11 are respectively inserted into the two conventional slide blocks 12, and the conventional fixed mold 13, the two conventional slide blocks 12 and the conventional movable mold jointly enclose a product cavity.

When the product 20 is molded, the conventional fixed mold 13 drives the corresponding conventional shifting blocks 11 to leave the conventional movable mold together, and simultaneously the four conventional shifting blocks 11 respectively drive the two conventional sliding blocks 12 to move to two sides in the moving process so as to generate the back-off 21 when the product 20 is molded.

However, since the conventional shifting block 11 is arranged on the conventional fixed die 13 and the conventional sliding block 12 is arranged on the conventional movable die, in order to facilitate quick insertion connection, the sizes of the conventional shifting block 11 and the conventional sliding block 12 are generally designed to be large, the size of the product 20 is small, the number of product cavities is large, if the conventional shifting block 11 is matched with the design of the conventional sliding block 12, the sizes of the core and the die blank of the conventional die 10 are designed to be large, so that the size of the whole conventional die 10 is also large, an injection molding machine with larger power is required for driving, the manufacturing time of the conventional die 10 is prolonged, and the cost is correspondingly high; furthermore, the nozzle 22 as in fig. 2 is easily dropped onto the conventional paddle 11 when dropped, with the risk of molding when the conventional mold 10 is closed.

Disclosure of Invention

The invention aims to provide a die, which solves the technical problems that in the prior art, a conventional shifting block is arranged on a conventional fixed die, a conventional sliding block is arranged on a conventional movable die, the conventional shifting block and the conventional sliding block are large in size and small in size, and the number of product cavities is large, and if the conventional shifting block is matched with the conventional sliding block, the sizes of a core and a die blank of the conventional die are large, so that the size of the whole conventional die is large, and an injection molding machine with larger power is required to drive.

The invention provides a die, comprising:

the fixed die comprises a template group, an A plate capable of moving relative to the template group and at least one forming assembly, wherein the template group is provided with a glue outlet, the A plate is provided with a concave cavity facing one side of the template group and a containing cavity far away from one side of the template group and communicated with the concave cavity, and the forming assembly is elastically installed in the concave cavity and can be partially exposed outside the A plate;

the movable mould is detachably connected with the plate A, in a mould closing state, the template group is attached to the plate A and props against the forming assembly in the concave cavity, the inner wall of the accommodating cavity, the forming assembly and the movable mould are enclosed to form a product cavity communicated with the glue outlet, and the product cavity is provided with a mould wall for forming a back-off; and in the mold opening state, the mold plate group is separated from the A plate, and the molding assembly part is exposed out of the A plate.

Further, the shaping subassembly includes two guide blocks, two first elastic components, two back-off blocks and two briquetting, the guide block is fixed in the cavity, two back-off blocks slidable mounting respectively in two on the guide block and can mutually reverse motion, the briquetting card is located on the back-off block, the lateral wall of cavity has the first inclined wall that the slope set up, the lateral wall of briquetting have with first inclined wall matched with second inclined wall, first elastic components both ends respectively with briquetting and cavity's inner wall connection, under the compound mode, hold the inner wall in chamber, two back-off blocks, two briquetting and movable mould enclose and close and form the product die cavity, two under the open mode, briquetting part protruding expose outside the A board.

Further, the forming assembly further comprises at least one limiting block used for limiting the travel of the pressing block, the limiting block is mounted on the plate A, and a notch matched with the limiting block is concavely formed in the pressing block.

Further, the fixed die further comprises a hooking component arranged on the die plate group, in a die closing state, the two pressing blocks are enclosed to form a clamping groove, the hooking component is clamped in the clamping groove, in a die opening state, the hooking component is separated from the clamping groove and drives the pressing blocks to move along the side, facing away from the guide block, of the first inclined wall.

Further, the template group includes the fixed plate, with the first runner board that the fixed plate is connected and with the first runner board is connected and can be relative the second runner board that the first runner board removed, the second runner board with the A board is connected, the second runner board runs through and is equipped with the perforation, under the compound mode, one end that the subassembly was hooked out is located first runner board, the other end passes behind the perforation with draw-in groove looks joint, under the die sinking state, one end that the subassembly was hooked out install in first runner board, the other end accomodate in the perforation.

Further, the hooking component comprises a connecting rod and a hooking rod connected with the connecting rod, the connecting rod is installed on the first runner plate, the hooking rod penetrates through the through hole, the hooking rod is provided with a clamping head, the clamping head can extend into the clamping groove in a die closing state, and in a die opening state, the clamping head drives the two pressing blocks to move towards one side away from the guide block, and the clamping head can be accommodated in the through hole.

Further, the die further comprises a limiting assembly and a second elastic piece sleeved on the limiting assembly, one end of the limiting assembly is in sliding connection with the template group, the other end of the limiting assembly is in sliding connection with the A plate and the movable die, and in a die closing state, one end of the second elastic piece is in butt joint with the template group, and the other end of the second elastic piece is in butt joint with the A plate.

Further, the limiting assembly comprises a locking piece and a pull rod connected with the locking piece, the locking piece and the pull rod are in a T shape, the template group is provided with a first mounting hole for the insertion of the locking piece in a penetrating mode, the A plate is provided with a second mounting hole for the insertion of the pull rod in a penetrating mode, the movable mould is provided with an avoidance hole for avoiding the pull rod, in a mould opening state, the second runner plate can slide relative to the first runner plate through the locking piece, and the A plate can slide relative to the template group through the pull rod.

Further, a first groove body communicated with the first mounting hole is formed in one face of the template group, which faces the A plate, a second groove body communicated with the second mounting hole is formed in one face of the A plate, which faces the template group, and one end of the second elastic piece is located in the first groove body, and the other end of the second elastic piece is located in the second groove body.

Further, the movable mould comprises a B plate, the mould further comprises a rubber plug, one end of the rubber plug is connected with the A plate, and the other end of the rubber plug is connected with the B plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the forming assembly is arranged in the die to replace the traditional conventional shifting block and conventional sliding block, when the die is closed, the template group is propped against the forming assembly in the concave cavity, the inner wall of the accommodating cavity, the forming assembly and the movable die are enclosed to form a product cavity communicated with the glue outlet, and the product cavity is provided with a die wall for forming the inverted buckle; when the die is opened, the molding assembly part elastically moves outside the concave cavity to finish core pulling movement, at the moment, the back-off of the product is formed, and the size of the molding assembly is smaller than that of a traditional conventional shifting block and a traditional sliding block, so that the size of the whole die is also smaller, an injection molding machine with smaller power is required to drive the die, the die cost is low, and the die manufacturing time is also short.

Drawings

FIG. 1 is a cross-sectional view of a product provided in the background art with a conventional mold section;

FIG. 2 is a schematic view of a part of the structure of a stationary mold provided in the background art;

FIG. 3 is a schematic diagram of a product according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a product provided by an embodiment of the present invention;

FIG. 5 is a first cross-sectional view of a mold according to an embodiment of the present invention after clamping;

FIG. 6 is an enlarged partial schematic view of FIG. 5A;

FIG. 7 is an enlarged partial schematic view at B in FIG. 5;

FIG. 8 is a cross-sectional view of an embodiment of the present invention providing an A-plate in combination with a partially formed assembly;

FIG. 9 is a schematic view of a portion of a molding assembly according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a mold according to an embodiment of the present invention after opening;

FIG. 11 is an enlarged partial schematic view of FIG. 10 at C;

fig. 12 is a second cross-sectional view of the mold according to the embodiment of the present invention after closing the mold.

In the figure:

10. a conventional mold; 11. a conventional dial block; 12. a conventional slider; 13. a conventional fixed mold; 20. a product; 21. reversing; 22. a water gap; 30. a fixed mold; 31. a template group; 311. a hot runner; 312. a glue outlet; 313. a fixing plate; 314. a first flow channel plate; 315. a second flow path plate; 3151. perforating; 316. a third fastener; 317. a first mounting hole; 3171. a first bore section; 3172. a second bore section; 318. a first tank body; 32. a plate A; 321. a cavity; 3211. a first inclined wall surface; 322. a receiving chamber; 323. a second mounting hole; 3231. a third bore section; 3232. a fourth bore section; 324. a second tank body; 33. a molding assembly; 331. a guide block; 3311. a slide rail; 332. a first elastic member; 333. a back-off block; 3331. a bump; 334. briquetting; 3341. a second inclined wall surface; 3342. a notch; 3343. a connection groove; 335. a first fastener; 336. a limiting block; 337. a second fastener; 338. a clamping groove; 34. hooking out the assembly; 341. a connecting rod; 342. a hook rod; 3421. a chuck; 40. a movable mold; 41. a B plate; 42. avoidance holes; 50. a mold wall; 60. a rubber plug; 70. a limit component; 71. a locking member; 711. a first club head; 712. a first rod body; 72. a pull rod; 721. a second club head; 722. a second rod body; 80. and a second elastic member.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Referring to fig. 3 to 11, an embodiment of the present invention discloses a mold for forming a product 20 with a back-off 21, wherein the number of the mold formed at one time can be multiple, the mold comprises a fixed mold 30 and a movable mold 40, and the movable mold 40 is buckled with the fixed mold 30.

In this embodiment, the fixed mold 30 includes a mold plate set 31, an a plate 32 movable relative to the mold plate set 31, and at least one molding assembly 33, wherein the a plate 32 is connected to the mold plate set 31, a hot runner 311 and a glue outlet 312 communicating with the hot runner 311 are disposed in the mold plate set 31, the a plate 32 has a cavity 321 and a receiving cavity 322 communicating with the cavity 321, the cavity 321 is disposed on a surface of the a plate 32 facing the mold plate set 31, the receiving cavity 322 is disposed on a surface of the a plate 32 far away from the mold plate set 31, the molding assembly 33 is elastically and slidably mounted on the cavity 321, and at this time, the molding assembly 33 is partially exposed outside the a plate 32.

The movable mold 40 is detachably connected with the a plate 32, in the mold closing state, the mold plate group 31 moves towards one side of the a plate 32, the mold plate group 31 is attached to the a plate 32 and presses the forming assembly 33 in the concave cavity 321, the inner wall of the accommodating cavity 322, the forming assembly 33 and the movable mold 40 are enclosed into a product cavity communicated with the glue outlet 312, and the product cavity is provided with a mold wall 50 for forming the back-off 21 on the product 20.

Under the die sinking state, the template group 31 is separated from the A plate 32, the molding assembly 33 is elastically connected to the concave cavity 321 and can slide relative to the concave cavity 321, the molding assembly 33 is partially exposed out of the A plate 32 due to the fact that the template group 31 is not pressed, the molding assembly 33 finishes the core pulling movement so as to form the back-off 21 on the product 20, the size of the molding assembly 33 is smaller than that of the traditional conventional poking block 11 and the conventional sliding block 12, the size of the whole die is small, the die can be driven by an injection molding machine with smaller power, the die cost is low, and the die manufacturing time is short.

In this embodiment, the forming assembly 33 includes two guide blocks 331, two first elastic members 332, two back-off blocks 333 and two pressing blocks 334, the guide blocks 331 are fixed on the bottom wall in the cavity 321 by the first fastening members 335, the two guide blocks 331 are arranged at intervals, a sliding groove is arranged at the bottom of the back-off blocks 333, sliding rails 3311 matched with the sliding groove are arranged at the top of the guide blocks 331, the two back-off blocks 333 are respectively slidably mounted on the two guide blocks 331, the two back-off blocks 333 can mutually reversely move on the two guide blocks 331, the pressing blocks 334 are clamped on the back-off blocks 333, the side wall of the cavity 321 is provided with a first inclined wall surface 3211 which is obliquely arranged, the outer side wall of the pressing block 334 is provided with a second inclined wall surface 3341 which is matched with the first inclined wall surface 3211, the first inclined wall surface 3211 is connected with the second inclined wall surface 3341, two ends of the first elastic members 332 are respectively connected with the inner walls of the pressing block 334 and the cavity 321, and the pressing block 334 are partially protruded out of the A plate 32.

In the mold closing state, the mold plate set 31 moves toward the a plate 32, the mold plate set 31 abuts against the pressing block 334 protruding outside the a plate 32, so that the pressing block 334 moves toward the side close to the guide block 331 along the first inclined wall surface 3211, the two pressing blocks 334 respectively drive the two back-off blocks 333 to abut against each other when abutting against each other, the first elastic member 332 is in an extrusion state, the inner wall of the accommodating cavity 322, the two back-off blocks 333, the two pressing blocks 334 and the movable mold 40 enclose to form the product cavity, and the two back-off blocks 333 enclose to form the mold wall 50.

In the mold opening state, the mold plate group 31 is separated from the press blocks 334, the two first elastic pieces 332 respectively push the two press blocks 334 to move along the first inclined wall surface 3211 towards the side far away from the guide block 331, then the press blocks 334 can move relative to the back-off blocks 333 and are exposed out of the A plate 32, when the two press blocks 334 are separated, the two back-off blocks 333 are respectively driven to separate towards two sides to finish core pulling movement, so that the back-off 21 is formed on the product 20, and as the press blocks 334 are not required to be arranged on the mold plate group 31, the sizes of the back-off blocks 333 and the press blocks 334 can be smaller than those of the conventional shifting blocks 11 and conventional slide blocks 12, so that the whole mold can be driven by a small-power injection molding machine, for example, the width and thickness of the prior mold can be reduced to 480mmx650mmx391mm from the original 500mmx830mmx501mm, the tonnage of the injection molding machine is reduced to 200T injection molding machine from the original 300T injection molding machine, the mold size and the tonnage of the injection molding machine are reduced, the economic cost is saved, and the production requirement of customers on the injection molding machine is met.

With continued reference to fig. 3 and 5-11, in some embodiments, the molding assembly 33 further includes at least one limiting block 336 for limiting the travel of the pressing block 334, the limiting block 336 is mounted on the a plate 32 by a second fastening member 337, and the pressing block 334 is concavely provided with a notch 3342 matching with the limiting block 336 to prevent the pressing block 334 from being pushed out of the cavity 321 by the first elastic member 332, and the second fastening member 337 is preferably a screw.

Before the product 20 is formed, the back-off block 333 needs to be withdrawn to two sides to generate the back-off 21 in the product 20, and then the movable mold 40 and the a plate 32 are opened to take out the product 20, so that the movable mold 40 and the a plate 32 need to be opened finally, in this embodiment, the movable mold 40 comprises a B plate 41 connected with the a plate 32, the mold further comprises a rubber plug 60, one end of the rubber plug 60 is connected with the a plate 32 in a clamping manner, and the other end of the rubber plug 60 is connected with the B plate 41 in a clamping manner, when the mold is opened, the a plate 32 is separated from the template group 31 first, and the a plate 32 moves along with the movable mold 40 first due to the rubber plug 60 between the a plate 32 and the movable mold 40, and after each plate is separated, the a plate 32 is separated from the movable mold 40, so as to avoid quality problems when the product 20 forms the back-off 21, and finally the product 20 is taken out from between the a plate 32 and the movable mold 40.

In this embodiment, the fixed mold 30 further includes a hooking component 34 mounted on the mold plate set 31, in the mold closing state, two pressing blocks 334 enclose to form a clamping groove 338, the hooking component 34 is clamped in the clamping groove 338, in the mold opening state, the hooking component 34 is separated from the clamping groove 338 and drives the pressing blocks 334 to move along the first inclined wall surface 3211 towards the side far away from the guide block 331, the two pressing blocks 334 move in opposite directions, the design of the hooking component 34 is mainly to prevent the first elastic element 332 from failing after a long time, the hooking component 34 can provide mechanical force to ensure the stability of the mold opening motion, and of course, if the elastic force of the first elastic element 332 is enough, the hooking component 34 can be omitted.

In this embodiment, the bottom of the pressing block 334 is concavely provided with a connection groove 3343, the top of the back-off block 333 is convexly provided with a protruding block 3331, after the die is assembled, the protruding block 3331 is inserted into the connection groove 3343, when the die is opened, the connection groove 3343 on the pressing block 334 will gradually separate from the protruding block 3331 on the back-off block 333, the protruding block 3331 can be provided in a circular truncated cone shape so as to be convenient for fast inserting and separating from the connection groove 3343 on the pressing block 334, and the two pressing blocks 334 can drive the two back-off blocks 333 to reversely separate so as to realize core pulling movement of the back-off block 333 and the pressing block 334.

The die plate set 31 includes a fixing plate 313, a first runner plate 314 connected to the fixing plate 313, and a second runner plate 315 connected to the first runner plate 314 and capable of moving relative to the first runner plate 314, the second runner plate 315 is connected to the a plate 32, the second runner plate 315 is provided with a through hole 3151, the fixing plate 313 and the first runner plate 314 are fixedly connected by a third fastener 316, the fixing plate 313 and the first runner plate 314 are not separated from each other, one end of the hooking component 34 is located on the first runner plate 314, the other end of the hooking component passes through the through hole 3151 and then is clamped with the clamping groove 338, in the die-opening state, when the second runner plate 315 is separated from the first runner plate 314, one end of the hooking component 34 is installed on the first runner plate 314, the other end of the hooking component is accommodated in the through hole 3151, the water gap 22 is generated between the second runner plate 315 and the a plate 32, and the end of the hooking component 34 is accommodated in the through hole 3151 in advance, the hooking component 34 is not dropped onto the other hooking component 34 when the water gap is dropped, and the die is not at risk of die-opening.

The hooking component 34 comprises an adapting rod 341 and a hooking rod 342 connected with the adapting rod 341, the adapting rod 341 is mounted on the first flow channel plate 314, the hooking rod 342 penetrates through the through hole 3151, the hooking rod 342 is provided with a clamping head 3421, the clamping head 3421 and the clamping groove 338 are all in a T shape, in the mold closing state, the hooking component 34 firstly stretches into between two separated pressing blocks 334 in the moving process of the template group 31, then the template group 31 is abutted against the two pressing blocks 334 protruding out of the A plate 32, the pressing blocks 334 move along the first inclined wall surface 3211 towards the side close to the guide block 331, finally the clamping head 3421 is clamped in the clamping groove 338 formed by the two pressing blocks 334, in the mold opening state, the clamping head 3421 drives the two pressing blocks 334 to move towards the side far away from the guide block 331, and the clamping head 3421 can be accommodated in the through hole 3151.

Referring to fig. 8 and 10-12, the mold further includes a limiting assembly 70 and a second elastic member 80 sleeved on the limiting assembly 70, wherein one end of the limiting assembly 70 is slidably connected with the die plate set 31, the other end of the limiting assembly is slidably connected with the a plate 32 and the movable mold 40, and in the mold clamping state, one end of the second elastic member 80 is abutted against the die plate set 31, the other end of the second elastic member is abutted against the a plate 32, and the second elastic member 80 is clamped between the die plate set 31 and the a plate 32, so that the die plate set 31 and the a plate 32 can be opened at first during mold opening.

The limiting assembly 70 comprises a locking member 71 and a pull rod 72 connected with the locking member 71, the locking member 71 and the pull rod 72 are both in a T shape, a first mounting hole 317 for inserting the locking member 71 is formed in the template group 31 in a penetrating manner, a second mounting hole 323 for inserting the pull rod 72 is formed in the A plate 32 in a penetrating manner, the first mounting hole 317 and the second mounting hole 323 are both in a T shape, an avoidance hole 42 for avoiding the pull rod 72 is formed in the movable mold 40, the outer diameter of the pull rod 72 is larger than the inner diameter of the first mounting hole 317, the pull rod 72 can be partially located in the avoidance hole 42 in a mold closing state, the second runner plate 315 can slide relative to the first runner plate 314 through the locking member 71 in a mold opening state, the travel of the second runner plate 315 is limited through the locking member 71, the A plate 32 can slide relative to the template group 31 through the pull rod 72, and the travel of the A plate 32 can be limited through the pull rod 72 after the second runner plate 315 moves to a maximum travel.

Specifically, the locking member 71 includes a first rod 711 and a first rod 712 connected to the first rod 711, the first mounting hole 317 includes a first hole segment 3171 and a second hole segment 3172 that are sequentially connected, the inner diameter of the first hole segment 3171 is larger than the inner diameter of the second hole segment 3172, the first rod 711 is slidably located in the first hole segment 3171, the first rod 712 is slidably located in the second hole segment 3172, and the stroke of the second runner plate 315 relative to the first runner plate 314 when the mold is opened can be determined by the stroke of the first rod 711 in the first hole segment 3171.

The pull rod 72 comprises a second rod head 721 and a second rod body 722 connected with the second rod head 721, the second mounting hole 323 comprises a third hole section 3231 and a fourth hole section 3232 which are communicated sequentially, the inner diameters of the third hole section 3231 and the avoidance hole 42 are equal, the inner diameters of the third hole section 3231 and the avoidance hole 42 are larger than those of the fourth hole section 3232, the second rod head 721 is slidably positioned in the third hole section 3231 and the avoidance hole 42, the second rod body 722 is slidably positioned in the fourth hole section 3232 and is connected with the first rod body 712, the outer diameter of the second rod body 722 is larger than the inner diameter of the second hole section 3172 in the second flow passage plate 315, and the stroke of the A plate 32 is determined by the stroke of the second rod head 721 in the third hole section 3231 and the avoidance hole 42.

One face of the template group 31 facing the A plate 32 is provided with a first groove body 318 communicated with the first mounting hole 317, one face of the A plate 32 facing the template group 31 is provided with a second groove body 324 communicated with the second mounting hole 323, and one end of the second elastic piece 80 is positioned in the first groove body 318, and the other end is positioned in the second groove body 324, so that the structure of the die is more compact.

Working principle of the die:

after the glue injection is finished, when the mould is opened, under the action of the rubber plug 60, the A plate 32 and the B plate 41 are in a meshed state, under the action of the mould opening force of the injection molding machine and the action of the second elastic piece 80, the A plate 32 and the B plate 41 move towards the side far away from the template group 31, the A plate 32 and the template group 31 are opened firstly, under the action force of the hooking component 34 and the first elastic piece 332, the pressing block 334 moves along the inclination of the first inclined wall surface 3211, the stroke is controlled by the limiting block 336, and the two back-off blocks 333 move towards the two outer sides under the action force of the corresponding pressing block 334 and the guide block 331, so that the back-off 21 of the product 20 is already out; under the continuing action of the mold opening force of the injection molding machine, the A plate 32 and the B plate 41 continue to move towards the side far away from the mold plate group 31, then the travel is controlled by the locking piece 71 in the limiting component 70, the second runner plate 315 continues to move towards the side far away from the mold plate group 31 along with the A plate 32 and the B plate 41, the second runner plate 315 is opened between the second runner plate 315 and the first runner plate 314, the hooking component 34 is hidden in the through hole 3151 relative to the second runner plate 315, the water gap 22 between the second runner plate 315 and the A plate 32 can fall off, the hooking component 34 can not influence the water gap 22 to fall off, finally the B plate 41 continues to move under the mold opening force of the injection molding machine, the A plate 32 and the B plate 41 are opened, the product 20 between the A plate 32 and the B plate 41 can be taken out, and the mold opening movement is completed,

during mold closing, under the action of mold closing force of the injection molding machine, the A plate 32 and the B plate 41 are first combined together, then the A plate 32 and the B plate 41 move towards the side close to the mold plate group 31, the pressing block 334 starts to contact the second flow passage plate 315, then the A plate 32, the B plate 41 and the second flow passage plate 315 move towards the side of the first flow passage plate 314 together, the pressing block 334 moves obliquely downwards along the first inclined wall surface 3211 under the action force of the A plate 32 in the process, the two back-off blocks 333 are abutted together under the action force of the pressing block 334 and the guide block 331, the component 34 is hooked in the process, the B plate 41, the A plate 32, the second flow passage plate 315 and the first flow passage plate 314 are gradually returned to be closed together, and the mold closing movement is completed and returns to the original state.

The invention innovates the conventional shifting block 11 and the conventional sliding block 12 into the pressing block 334 and the back-off block 333, and utilizes the first elastic piece 332, the second elastic piece 80, the hooking component 34 and the injection molding machine mold opening force to provide power to drive the pressing block 334 and the back-off block 333 to move so as to complete core pulling movement; the design of the component 34 avoids the risk of the nozzle 22 falling off a possible pressing die, meets the production requirement of customers on the injection molding machine, reduces the size of the die and the tonnage of the injection molding machine, saves the economic cost, and provides powerful technical support for the product 20 in strong market competition.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.

Claims (10)

1. A mold, comprising:

the fixed die comprises a template group, an A plate capable of moving relative to the template group and at least one forming assembly, wherein the template group is provided with a glue outlet, the A plate is provided with a concave cavity facing one side of the template group and a containing cavity far away from one side of the template group and communicated with the concave cavity, and the forming assembly is elastically installed in the concave cavity and can be partially exposed outside the A plate;

the movable mould is detachably connected with the plate A, in a mould closing state, the template group is attached to the plate A and props against the forming assembly in the concave cavity, the inner wall of the accommodating cavity, the forming assembly and the movable mould are enclosed to form a product cavity communicated with the glue outlet, and the product cavity is provided with a mould wall for forming a back-off; and in the mold opening state, the mold plate group is separated from the A plate, and the molding assembly part is exposed out of the A plate.

2. The die of claim 1, wherein the molding assembly comprises two guide blocks, two first elastic pieces, two back-off blocks and two pressing blocks, the guide blocks are fixed in the concave cavities, the two back-off blocks are respectively slidably mounted on the two guide blocks and can move reversely, the pressing blocks are clamped on the back-off blocks, the side walls of the concave cavities are provided with first inclined wall surfaces which are obliquely arranged, the outer side walls of the pressing blocks are provided with second inclined wall surfaces which are matched with the first inclined wall surfaces, two ends of the first elastic pieces are respectively connected with the pressing blocks and the inner walls of the concave cavities, in a die clamping state, the inner walls of the accommodating cavities, the two back-off blocks, the two pressing blocks and the movable die are enclosed to form the product cavity, in a die opening state, the pressing blocks are partially exposed outside the A plate.

3. The die of claim 2, wherein the molding assembly further comprises at least one stopper for limiting the travel of the press block, the stopper is mounted on the a plate, and the press block is provided with a notch in a concave manner, the notch being matched with the stopper.

4. The mold of claim 2, wherein the fixed mold further comprises a hooking component mounted on the template set, in a mold closing state, two pressing blocks are enclosed to form a clamping groove, the hooking component is clamped in the clamping groove, and in a mold opening state, the hooking component is separated from the clamping groove and drives the pressing blocks to move along the side of the first inclined wall facing away from the guide block.

5. The mold of claim 4, wherein the mold plate set comprises a fixed plate, a first runner plate connected with the fixed plate, and a second runner plate connected with the first runner plate and capable of moving relative to the first runner plate, the second runner plate is connected with the a plate, a through hole is formed in the second runner plate in a penetrating mode, one end of the hooking component is located on the first runner plate, the other end of the hooking component penetrates through the through hole and then is clamped with the clamping groove, and in the mold opening mode, one end of the hooking component is installed on the first runner plate, and the other end of the hooking component is contained in the through hole.

6. The mold according to claim 5, wherein the hooking component comprises an engagement rod and a hooking rod connected with the engagement rod, the engagement rod is mounted on the first runner plate, the hooking rod penetrates through the through hole, the hooking rod is provided with a clamping head, the clamping head can extend into the clamping groove in a mold clamping state, the clamping head drives the two pressing blocks to move towards the side far away from the guide block in a mold opening state, and the clamping head can be accommodated in the through hole.

7. The mold according to claim 5, further comprising a limiting assembly and a second elastic member sleeved on the limiting assembly, wherein one end of the limiting assembly is slidably connected with the template set, the other end of the limiting assembly is slidably connected with the a plate and the movable mold, and in a mold clamping state, one end of the second elastic member is abutted to the template set, and the other end of the second elastic member is abutted to the a plate.

8. The die of claim 7, wherein the limiting assembly comprises a locking member and a pull rod connected with the locking member, the locking member and the pull rod are both in a T shape, the die plate set is provided with a first mounting hole for the insertion of the locking member in a penetrating manner, the a plate is provided with a second mounting hole for the insertion of the pull rod in a penetrating manner, the movable die is provided with a avoiding hole for avoiding the pull rod, and in the die opening state, the second runner plate can slide relative to the first runner plate through the locking member, and the a plate can slide relative to the die plate set through the pull rod.

9. The mold of claim 8, wherein a first groove communicating with the first mounting hole is provided on a face of the die plate set facing the a plate, a second groove communicating with the second mounting hole is provided on a face of the a plate facing the die plate set, and one end of the second elastic member is located in the first groove, and the other end of the second elastic member is located in the second groove.

10. The mold of claim 1, wherein the movable mold comprises a B plate, the mold further comprising a rubber plug, one end of the rubber plug being connected to the a plate and the other end being connected to the B plate.

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