CN112238573A

CN112238573A - Automatic cutting-off die for insert injection molding and machining method thereof

Info

Publication number: CN112238573A
Application number: CN202011023831.2A
Authority: CN
Inventors: 吴琼; 何金凤
Original assignee: Shenzhen Clip Electronic Co ltd
Current assignee: Shenzhen Clip Electronic Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-01-19

Abstract

The application relates to the field of dies, in particular to an insert injection molding automatic cutting die which comprises a movable die and a fixed die, wherein the movable die comprises a movable die panel, an A plate and a movable die core, and a punch for cutting off a connecting rib is arranged on the movable die panel; a movable die groove is arranged in the A plate; the movable mould core is arranged in the movable mould groove, and a mould core is arranged on the movable mould core; the cover half includes: the die comprises a plate B and a fixed die core, wherein a fixed die groove is formed in the plate B; the fixed die core is arranged in the fixed die groove, a cavity is arranged on the fixed die core, and a cavity for molding the rubber core is formed between the cavity and the die core in a corresponding die fit mode; the punch penetrates through the plate A and the movable mould core, and the punch can be in inserted fit with the fixed mould core; the in-process of the injection moulding rubber core, the hardware is compressed tightly by the die and the movable mould, and the drift on the movable mould panel runs through in movable mould benevolence and A board, and will link the muscle to cut off towards the B board direction, has the effect of simplifying rubber core forming process, shortening time.

Description

Automatic cutting-off die for insert injection molding and machining method thereof

Technical Field

The application relates to the field of molds, in particular to an insert injection molding automatic cutting mold and a processing method thereof.

Background

In the process of injection molding, the mold used for plastic injection molding is called an injection molding mold, which is called an injection mold for short. The injection mould can form plastic products with complex appearance, high size precision or hardware in one step.

Among the correlation technique, the injection mould need pour out the gluey core that has the hardware, and the hardware includes the stitch that a plurality of in rows set up, in order to make the stitch must be arranged neatly, is provided with even muscle between the general stitch, even muscle can make the difficult production skew in position between the stitch to guarantee the shaping quality of gluing the core. After the rubber core is molded, the pins need to be cut off so as to avoid short circuit between the adhered pins during electric connection.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that the rubber core needs to use a special cutting device when cutting off the connecting ribs, which results in a complex rubber core forming process.

Disclosure of Invention

In order to simplify the molding process of the rubber core, the application provides an automatic cutting die for insert injection molding and a processing method thereof.

In a first aspect, the application provides a mold for automatically cutting off insert injection molding, which adopts the following technical scheme.

A mold for automatically cutting off insert injection molding comprises a mold body.

A movable die, the movable die comprising:

the movable die panel is provided with a punch head for cutting off the connecting ribs;

the plate A is provided with a movable die groove;

the movable mould core is arranged in the movable mould groove and provided with a mould core.

A stationary mold, the stationary mold comprising:

the plate B is provided with a fixed die groove;

the fixed die core is arranged in the fixed die groove, a cavity is arranged on the fixed die core, and a cavity for molding the rubber core is formed between the cavity and the die core in a corresponding die combination mode;

the punch penetrates through the plate A and the movable mold core, and the punch can be in inserted fit with the fixed mold core.

By adopting the technical scheme, the punch is arranged in the movable die, and the punch can cut off the connecting rib, so that the connecting rib can be cut off in the molding process of the rubber core, the step of cutting the connecting rib separately by the rubber core is reduced, the equipment for cutting off the connecting rib is saved, and the molding process of the rubber core is simplified.

Preferably, an elastic member is arranged between the movable die panel and the A plate.

By adopting the technical scheme, the punch is arranged on the movable mould panel, when the mould is closed, the hardware can be clamped by the fixed mould core and the movable mould core, and the punch moves towards the mould closing direction to cut the connecting ribs; before demoulding, under the action of the elastic piece, the movable mould panel drives the punch to leave the fixed mould, and the A plate drives the movable mould core to be far away from the fixed mould core, so that the punch can be firstly drawn out of the rubber core, and demoulding of the rubber core is more smooth.

Preferably, the movable die core is provided with a punched hole, the fixed die core is provided with a punching groove, and the punched hole and the punching groove are communicated with each other to form a punching channel; the punch is in sliding fit with the punching channel.

By adopting the technical scheme, the punch can penetrate through the movable die core and is inserted into the movable die core, so that the punch can penetrate through the hardware, and the connecting rib is cut off more completely.

Preferably, the plate B and the fixed die core are provided with discharge channels, and the discharge channels are communicated with the punching channels.

Through adopting above-mentioned technical scheme, the even muscle that is cut off can fall along towards the material passageway, is convenient for in time detach the waste material in the mould.

Preferably, the punch comprises a cutting section and a reinforcing section, and the reinforcing section and the cutting section are transited through an inclined guide surface.

Through adopting above-mentioned technical scheme, because the drift is longer, the section of cutting is constantly pressing the in-process disconnected, the cutting to the company's muscle, and the section of strengthening can increase the intensity of drift for the drift structure is tougher, and the drift is changeed in the transmission atress.

Preferably, the punch and the movable die plate are detachably fixed.

Through adopting above-mentioned technical scheme, the drift can be changed after receiving wearing and tearing, has reduced the material cost of mould.

Preferably, the fixed die core is provided with a limiting structure for limiting the hardware.

Through adopting above-mentioned technical scheme, limit structure can carry on spacingly to the hardware, consequently at the in-process that the mould was moulded plastics, the hardware is difficult for producing and shifts, has promoted the finished product quality of gluing the core.

Preferably, the cavity comprises:

the first cavity is used for forming a first rubber core, and an upper embedded block forming the first cavity is provided with a forming groove for forming a clamping convex buckle;

the second cavity is used for forming a second rubber core, and a forming lug for forming a clamping groove is arranged on a lower embedded block forming the second cavity;

wherein the clamping convex buckle of the first rubber core is matched with the clamping groove of the second rubber core in a clamping way.

Through adopting above-mentioned technical scheme, first gluey core of first die cavity injection moulding can glue the core with second die cavity injection moulding and mutually support, glues the core with first gluey core and second and glue the core shaping on one set of mould, the equipment of the core of being convenient for to can guarantee that the first quantity of gluing the core and gluing the core with the second equals, promote the utilization ratio of shaping work piece.

Preferably, the processing method for automatic cutting of the insert injection molding comprises the following steps:

s1, placing the hardware, namely placing the hardware on the cavity, wherein the connecting rib of the hardware is positioned above the opening of the notching;

s2, assembling the die, and clamping the hardware by the passive die core and the fixed die core;

s3, cutting ribs, moving a punch towards a die assembly direction, cutting off the connecting ribs of the hardware by the tail end of the punch, and inserting and matching the punch with the punching grooves;

and S4, opening the die, and moving the movable die away from the fixed die.

Through adopting above-mentioned technical scheme, the drift is installed on the movable mould panel, can utilize the mould opening, compound die action that the mould originally economized to make the mould just cut off even muscle at the in-process of shaping gluey core, has saved and has additionally used special cutting equipment to cut off even muscle, consequently can simplify the step that even muscle cut off to simplify the forming process of gluing the core.

Preferably, after S3, the method further comprises the steps of: s401, the punch moves towards the die opening direction and leaves the punching groove.

Through adopting above-mentioned technical scheme, after moulding plastics, because the drift is taken out earlier, the drawing of patterns of gluing the core is more smooth and easy, also does not increase the shaping cycle at whole in-process, consequently can realize cutting off the function of even muscle at original mould injection moulding's in-process.

Drawings

FIG. 1 is a schematic structural view of a related art hardware prior to cutting tie bars;

FIG. 2 is a schematic structural diagram of a hardware of the related art in cutting off a connecting rib and removing a process edge;

FIG. 3 is a schematic structural diagram of a first glue core and a second glue core of the related art;

FIG. 4 is a schematic diagram of the overall structure of an insert injection automatic cutting mold according to an embodiment of the present application;

FIG. 5 is a cross-sectional view of the movable mold plate, the plate A and the movable mold core according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of the assembled relationship of the punch and the movable die plate according to an embodiment of the present application;

FIG. 7 is a schematic view illustrating an assembly relationship between a plate A and a cavity insert according to an embodiment of the present application;

FIG. 8 is a schematic view of the assembly of a movable mold and a stationary mold according to an embodiment of the present application;

fig. 9 is a schematic structural view illustrating a punch penetrating through a core according to an embodiment of the present application;

FIG. 10 is an exploded view of a molding assembly according to one embodiment of the present application;

FIG. 11 is a partial enlarged view taken along section A in FIG. 8;

fig. 12 is a partial enlarged view taken along a portion B in fig. 8;

FIG. 13 is a cross-sectional view of a cutting web as the punch of one embodiment of the present application is depressed;

FIG. 14 is an enlarged fragmentary view taken along section C of FIG. 13;

FIG. 15 is a schematic view of a punch and lower insert mating arrangement according to an embodiment of the present application;

fig. 16 is a process flow diagram of a method for insert injection molding auto-shutoff machining according to an embodiment of the present application.

Description of reference numerals:

1. hardware; 11. a stitch; 12. connecting the ribs; 13. a process edge; 131. a circular hole; 14. a first rubber core; 141. clamping the convex buckle; 15. a second rubber core; 151. clamping the groove;

21. a movable mould panel; 201. a glue inlet; 202. an upper clamping groove; 211. a punch; 2111. cutting into sections; 2112. an inclined guide surface; 2113. a reinforcement section; 2114. a clamping and connecting plate; 212. an elastic member; 22. a, a plate; 221. a lower clamping groove; 222. a jack; 23. a clamping assembly; 231. a clamping seat; 2311. a mating groove; 2312. a via hole; 232. a mating seat; 2321. a limiting notch; 24. a movable mould core; 241. an upper caulking groove;

31. fixing the die panel; 311. a die angle; 32. b, plate; 321. a discharge hole; 33. fixing a mold core; 331. a lower caulking groove;

4. a molding assembly; 41. an upper embedded block group; 411. a core; 412. punching; 413. a guide hole; 414. forming a groove; 42. a lower embedded block group; 421. a cavity; 422. notching; 423. a limiting hole; 424. a positioning pin; 425. a tip; 426. a needle head; 427. and forming the bump.

Detailed Description

The present application is described in further detail below with reference to figures 1-16.

Referring to fig. 1 and 2, a hardware 1 in the related art includes pins 11 arranged in a row, adjacent pins 11 are connected by connecting ribs 12, a technical edge 13 is further adhered to the tail end of the pins 11 arranged in a row, and a circular hole 131 is formed in the technical edge 13. The hardware 1 needs to be placed in a mold and subjected to the process of injection molding and encapsulation in order to form a rubber core. After the rubber core is formed, the connecting ribs 12 need to be cut off so as to prevent short circuit between the pins 11 during electric connection; while the process edge 13 also needs to be removed.

Referring to fig. 3, the rubber core includes a first rubber core 14 and a second rubber core 15, a clamping convex buckle 141 is arranged on one side surface of the

first rubber core

14, and 4 clamping convex buckles 141 are arranged; one side surface of the second rubber core 15 is provided with 4 clamping

grooves

151 and 151, and the number of the clamping grooves 151 is also 4; the clamping convex buckle 141 and the clamping groove 151 are matched in an inserted manner, so that the first rubber core 14 and the second rubber core 15 are clamped and fixed.

The embodiment of the application discloses mould that inserts were moulded plastics and are cut off automatically.

Referring to fig. 4, the mold for insert injection molding automatic cutting comprises a movable mold and a fixed mold, wherein the movable mold comprises a movable mold panel 21, an a plate 22 and a movable mold core 24 which are arranged from top to bottom, and the fixed mold comprises a fixed mold panel 31, a B plate 32 and a fixed mold core 33 which are arranged from bottom to top.

Referring to fig. 5 and 6, the movable die panel 21 is provided with a glue inlet 201, the movable die panel 21 and the a plate 22 are provided separately, and an elastic member 212 is provided between the movable die panel 21 and the a plate 22. Specifically, the elastic member 212 may be a circular spring, a plate spring, a ring spring or a belleville spring, and this application takes the circular spring as an example, a limit circular hole is provided on the movable die panel 21, a spring hole is provided on the a plate 22, the spring hole and the limit circular hole are arranged oppositely, and one end of the circular spring abuts against the bottom of the spring hole, the other end abuts against the bottom of the limit circular hole, and two ends of the circular spring may be fixed with the movable die panel 21 or the a plate 22 by welding or bonding or the like. A movable die cavity is formed in one side, away from the movable die panel 21, of the A plate 22, and the movable die core 24 is installed in the movable die cavity.

Referring to fig. 7 and 8, the fixed mold panel 31 is located at the lower part of the mold, mold corners 311 are arranged on two sides of the fixed mold panel 31, the mold corners 311 are fixed to the B plate 32, a fixed mold groove is formed in one side of the B plate 32, which is away from the fixed mold panel 31, and the fixed mold core 33 is installed in the fixed mold groove.

Referring to fig. 8 and 9, a molding assembly 4 for injection molding of the rubber core is further installed between the movable mold core 24 and the fixed mold core 33. The molding assembly 4 includes an upper nest 41 and a lower nest 42. One end of the upper insert block group 41 is provided with a core 411, one end of the lower insert block group 42 is provided with a cavity 421, and the core 411 is arranged opposite to the cavity 421. When the die is closed, the hardware 1 is placed above the cavity 421, and molten plastic is molded in a cavity formed between the core 411 and the cavity 421 to form a rubber core for encapsulating the workpiece.

Referring to fig. 9 and 10, the upper insert block group 41 is formed by a plurality of upper insert blocks in a clamping fit manner, an upper insert groove 241 is formed in one side of the movable die core 24 away from the movable die plate, the upper insert groove 241 penetrates through the movable die core 24, the upper insert block group 41 is installed in the upper insert groove 241, the upper insert blocks are abutted to the bottom of the movable die groove, limiting edges are arranged on the upper insert blocks located on two opposite sides of the upper insert block group 41 in a protruding manner, limiting step grooves are arranged on one side of the corresponding upper insert groove 241 facing the a plate 22, and the limiting edges are in clamping fit with the limiting step grooves. Thus, the upper insert block set 41 in clamping fit is fixed in the movable mold core 24 and is not easy to be separated from the movable mold core 24.

The aforesaid lower insert block group 42 is formed by the cooperation of the lower insert block joint of polylith, lower caulking groove 331 has been seted up to the one side that the fixed die plate deviates from in the fixed die core 33 of fixed die core, lower caulking groove 331 runs through in the setting of fixed die core 33, lower insert block group 42 is installed under in caulking groove 331, lower insert block and the bottom looks butt in fixed die groove, and the lower insert block that is located the relative both sides of lower insert block group 42 is outstanding to be provided with spacing protruding edge, the caulking groove 331 is provided with spacing recess in one side towards A board 22 under corresponding, spacing protruding edge and spacing recess joint cooperation. Thus, the lower insert block group 42 in clamping fit is fixed in the fixed mold core 33 and is not easy to separate from the fixed mold core 33.

Further, the lower insert block positioned in the positioning die core 33 is provided with a limiting structure for limiting the hardware 1. Specifically, a limiting hole 423 is formed in the lower insert, a stepped hole is further formed in the limiting hole 423 in a communication manner on the periphery of one end of the limiting hole 423 facing the B plate 32, the limiting structure is a positioning needle 424, one end of the positioning needle 424 is integrally connected with a tip 425, the other end of the positioning needle 424 is integrally connected with a needle head 426, the needle head 426 is matched with the stepped hole, the positioning needle 424 is matched with the limiting hole 423, and the tip 425 protrudes out of the lower insert; further, the positioning pins 424 are provided at least two on the lower insert. A round hole 131 is formed in the technical edge 13 of the hardware workpiece, and a tip 425 penetrates through the round hole 131 to limit the movement of the hardware 1.

Referring to fig. 11 and 12, the cavities include a first cavity and a second cavity, the first cavity is used for molding the first rubber core 14, a molding groove 414 is formed on the upper embedding component forming the first cavity, and the clamping convex buckle 141 is molded under the action of the molding groove 414 corresponding to the first rubber core 14. The second cavity is used for molding the second rubber core 15, and a molding bump 427 for molding the clamping groove 151 is arranged on the lower embedded component forming the second cavity. The shaping recess 414 of first gluey core 14 and the cooperation of the shaping lug 427 joint of second gluey core 15 for first gluey core 14 can reciprocal anchorage with second gluey core 15, and the plastic products who contains two hardware 1 of the formation of moulding plastics once more under the condition that the first gluey core 14 of being convenient for is connected with second gluey core 15.

Referring to fig. 13 and 14, the movable die panel 21 is provided with a punch 211, the punch 211 penetrates through the a plate 22 and the movable die core 24, and the punch 211 can be inserted into and matched with the fixed die core 33. Specifically, the punch 211 includes a cut-out portion 2111 and a reinforcing portion 2113, and the cut-out portion 2111 and the reinforcing portion 2113 are integrally formed. The diameter of the reinforcing section 2113 is larger than that of the cutting section 2111, a clamping plate 2114 is integrally formed at one end, away from the cutting section 2111, of the reinforcing section 2113, the reinforcing section 2113 and the cutting section 2111 are transited through an inclined guide surface 2112, so that the transition between the thick reinforcing section 2113 and the thin cutting section 2111 is smooth, and the clamping condition between the connecting part of the reinforcing section 2113 and the cutting section 2111 and the inside of a die in the cutting process of the punch 211 is reduced.

Referring to fig. 5 and 8, the punch 211 is detachably attached to the movable die plate 21. Specifically, last joint groove 202 has been seted up on movable mould panel 21, and the joint cooperation has joint subassembly 23 in going up joint groove 202, and joint subassembly 23 includes joint seat 231 and the cooperation seat 232 with joint seat 231 joint, has seted up cooperation groove 2311 on the joint seat 231, and a plurality of via holes 2312 have been seted up to the bottom of cooperation groove 2311 to via hole 2312 and enhancement section 2113 transition fit. A limiting notch 2321 is arranged on the matching seat 232, the clamping plate 2114 is positioned in the limiting notch 2321, and the clamping plate 2114 is in transition fit with the limiting notch 2321; the limiting notch 2321 is opposite to the through hole 2312, and the matching seat 232 is abutted and matched with the matching groove 2311. In this embodiment, the punches 211 are arranged in rows, the corresponding through holes 2312 are also arranged in rows on the snap seats 231, and the plurality of snap plates 2114 are accommodated in the limiting notches 2321. The clamping seat 231 and the matching groove 2311 are arranged in the upper clamping groove 202, and the clamping seat 231 is fixed with the movable die panel 21, and the specific fixing mode can be screw fixing or clamping matching fixing.

Referring to fig. 13 and 14, a lower clamping groove 221 is formed in the a plate 22, the position of the lower clamping groove 221 corresponds to the position of the upper clamping groove, and an insertion hole 222 is formed in the a plate 22; the upper insert block in the movable mold core 24 is provided with a punching hole 412, and the periphery of at least one end of the punching hole 412 is provided with a guide hole 413; a punching groove 422 is formed in the lower insert in the fixed die core 33, the insertion hole 222, the punching hole 412 and the punching groove 422 are coaxially arranged, and the insertion hole 222, the punching hole 412 and the punching groove 422 are communicated with each other to form a punching channel; the punch 211 is in sliding fit with the punch channel.

The B plate 32 is provided with a discharge hole 321, and the punching groove 422 is communicated with the discharge hole 321 to form a discharge channel. The discharging channel is communicated with the material flushing channel. Therefore, when the punch 211 is pressed down in the mold clamping direction, the punch 211 can move vertically, and the tie bars 12 cut by the punch 211 can fall from the discharge passage, so that the situation that the tie bars 12 are clamped in the mold is reduced. In general, too many connecting ribs 12 are stacked at the bottom of the punch groove 422, the waste material of the connecting ribs 12 can impact the punch 211 to cause the punch 211 to bend, break or damage, and the waste material of the connecting ribs 12 in the embodiment can directly fall down from the die, so that the stacking inside the die can be reduced, and the punch 211 is protected.

Further, the diameter of the discharge hole 321 from the end communicated with the punching groove 422 to the end far away from the punching groove 422 is gradually increased, so that the material blocking condition of the connecting rib 12 in the material punching channel can be reduced.

Referring to fig. 15, an implementation principle of a mold for automatically cutting off insert injection molding according to an embodiment of the present application is as follows: the hardware 1 is placed on the cavity 421 of the lower insert block group 42, the connecting rib 12 is located in the punching channel, when the die is closed, the a plate 22 and the movable die core 24 are pressed downwards simultaneously, and the movable die panel 21 is also pressed downwards, because the elastic piece 212 is connected between the movable die panel 21 and the a plate 22, after the lower insert block located in the fixed die core 33 and the upper insert block located in the movable die core 24 are mutually pressed, the punch 211 on the movable die panel 21 is gradually pressed downwards to cut off the connecting rib 12, and therefore in the process of cutting off the connecting rib 12, the connecting rib 12 is not easy to pull the pin 11, so that the position of the pin 11 is deviated; when the mold is opened, the movable mold panel 21 is firstly bounced open under the action of the elastic element 212, and the punch 211 is driven to draw out the fixed mold core 33, so that the punch 211 can be separated from the rubber core, and material blockage in the rubber core demolding process is reduced. The process of cutting off the connecting ribs 12 is carried out in the process of molding the rubber cores and is positioned in the die, and meanwhile, the connection of the rubber cores is realized by utilizing the die opening and closing of the die, so that the extra time spent in the process of cutting off the connecting ribs 12 is saved, and the process steps of taking out the rubber cores from the die and cutting off the connecting ribs 12 are also omitted.

The embodiment of the application also discloses a processing method for automatically cutting off the insert injection molding.

Referring to fig. 16, a processing method for insert injection automatic cutting, applied to the above mold for insert injection automatic cutting, includes the following steps:

and S1, placing the hardware 1 on the cavity 421, wherein the connecting rib 12 of the hardware 1 is positioned above the opening of the punching groove 422.

And S11, fixing, namely fixing the hardware 1 on the lower embedded block, wherein the fixing mode can be that at least two positioning pins 424 arranged on the lower embedded block penetrate through the round holes 131 on the technical edge 13 for positioning, and can also be clamping fixing, clamping fixing or other modes for fixing.

And S2, closing the die, enabling the movable die to move towards the direction of the fixed die, and enabling the movable die core 24 to compress the hardware 1, so that the hardware 1 is clamped by the movable die core 24 and the fixed die core 33.

And S21, injecting glue, injecting the molten glue into the cavity, and molding in the cavity. Specifically, a first cavity forms a first glue core 14 and a second cavity forms a second glue core 15.

And S3, cutting ribs, wherein the punch 211 penetrates through the A plate 22 and the upper insert block in the fixed mold core 33, the punch 211 moves towards the mold closing direction, the tail end of the punch 211 cuts off the connecting ribs 12 of the hardware 1, and the punch 211 is pressed down to be in inserted fit with the punch groove 422.

S31, blanking, and dropping the cut connecting ribs 12 to the outside of the die along the blanking channel under the action of gravity, so that the accumulation of the waste materials of the connecting ribs 12 is reduced.

S401, tapping, wherein the punch 211 moves towards the die opening direction, and the punch 211 leaves the punching groove 422 and is separated from the lower insert in the cavity block 33.

And S4, opening the mold, moving the movable mold away from the fixed mold, separating the molded first rubber core 14 or second rubber core 15 from the fixed mold under the action of the demolding mechanism, and taking out the rubber cores from the mold by using a suction nozzle, a manipulator or other devices.

And S5, removing the material, and breaking off the technical edge 13. The technical edge 13 can be separated from the stitching by hand.

The implementation principle of the processing method for automatically cutting off the insert injection molding in the embodiment of the application is as follows: the connecting ribs 12 are cut off after the hardware 1 is matched, and the hardware 1 is compressed before rib cutting, so that the hardware 1 is not easy to shift in the process of cutting the connecting ribs 12; after the connecting ribs 12 are cut off, the punch 211 is separated from the rubber core firstly, so that the demoulding of the rubber core is facilitated, and the blocking of the rubber core is reduced.

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

1. The utility model provides an inserts mould plastics automatic cutout's mould which characterized in that: the method comprises the following steps:

a movable die, the movable die comprising:

the die comprises a movable die panel (21), wherein a punch (211) for cutting off the connecting rib (12) is arranged on the movable die panel (21);

the plate A (22) is provided with a movable die groove in the plate A (22);

the movable die core (24), the movable die core (24) is installed in the movable die groove, and a die core (411) is arranged on the movable die core (24);

a stationary mold, the stationary mold comprising:

the plate B (32) is provided with a fixed die groove;

the fixed die core (33) is arranged in the fixed die groove, a cavity (421) is arranged on the fixed die core (33), and a cavity for molding the rubber core is correspondingly molded between the cavity (421) and the die core (411);

the punch (211) penetrates through the A plate (22) and the moving die core (24), and the punch (211) can be matched with the fixed die core (33) in an inserted manner.

2. The insert injection molding automatic cutout mold according to claim 1, characterized in that: an elastic piece (212) is arranged between the movable die panel (21) and the A plate (22).

3. The insert injection molding automatic cutout mold according to claim 2, characterized in that: a punching hole (412) is formed in the movable die core (24), a punching groove (422) is formed in the fixed die core (33), and the punching hole (412) and the punching groove (422) are communicated with each other to form a punching channel; the punch (211) is in sliding fit with the punching channel.

4. The insert injection automatic cutout mold according to claim 3, characterized in that: and the plate B (32) and the fixed die core (33) are internally provided with a discharge channel, and the discharge channel is communicated with the material flushing channel.

5. The insert injection molding automatic cutout mold according to claim 1, characterized in that: the punch (211) comprises a cutting section (2111) and a reinforcing section (2113), wherein the reinforcing section (2113) is in transition with the cutting section (2111) through an inclined guide surface (2112).

6. The insert injection molding automatic cutout mold according to claim 1, characterized in that: the punch (211) and the movable die plate are detachably fixed.

7. The insert injection molding automatic cutout mold according to claim 1, characterized in that: be provided with on decide mould benevolence (33) and be used for carrying out spacing limit structure to hardware (1).

8. The insert injection automatic cutting mold according to any one of claims 1 to 7, characterized in that: the cavity includes:

the first cavity is used for forming a first rubber core (14), and an upper insert block forming the first cavity is provided with a forming groove (414) used for forming a clamping convex buckle (141);

the second cavity is used for forming a second rubber core (15), and a forming lug (427) used for forming the clamping groove (151) is arranged on the lower embedded block forming the second cavity;

wherein the clamping convex buckle (141) of the first rubber core (14) is matched with the clamping groove (151) of the second rubber core (15) in a clamping way.

9. The processing method for automatically cutting off the insert injection molding is characterized by comprising the following steps of: the mold applied to insert injection molding automatic cutting as claimed in any one of claims 1 to 7, comprising the following steps:

s1, placing the hardware, namely placing the hardware (1) on the cavity (421), and positioning the connecting rib (12) of the hardware (1) above the opening of the punching groove (422);

s2, closing the die, and clamping the hardware (1) by the passive die core (24) and the fixed die core (33);

s3, cutting ribs, wherein the punch (211) moves towards the mold closing direction, the tail end of the punch (211) cuts off the connecting ribs (12) of the hardware (1), and the punch (211) is in inserted fit with the punching groove (422);

and S4, opening the die, and moving the movable die away from the fixed die.

10. The insert injection molding automatic cutting machining method according to claim 9, characterized in that: after S3, the method further includes the following steps: s401, the punch (211) moves towards the die opening direction and leaves the punching groove (422).