CN217862583U - Half-arc shell forming die - Google Patents

Abstract

The utility model belongs to the technical field of injection moulding's technique and specifically relates to a half-arc casing forming die is related to, it includes: a fixed die is arranged on the fixed die; the movable die is provided with a core, the movable die is used for being matched with the fixed die to form a pair of die sets, when the movable die and the fixed die are matched, a cavity with the shape consistent with that of the body part is formed between the core and the concave die in a surrounding mode, and the movable die is provided with a core-pulling assembly for forming a second groove; the core-pulling assembly comprises an inclined guide rod, a sliding block and a forming insert, the bottom of the inclined guide rod penetrates through the sliding block in an inclined mode and is matched with the sliding block in a sliding mode, and the forming insert is fixedly connected to one side, close to the cavity, of the sliding block; in the process of opening the movable mold and the fixed mold, the inclined guide rod applies force to the slide block to enable the slide block to slide away from the cavity; in the process of closing the movable mold and the fixed mold, the inclined guide rod applies force to the slide block to enable the slide block to slide close to the mold cavity, so that the molding insert is movably inserted into the mold cavity. The application has the effect of improving the efficiency of producing the semi-arc-shaped workpiece.

Description

Half-arc shell forming die

Technical Field

The utility model belongs to the technical field of injection moulding's technique and specifically relates to a half-arc casing forming die is related to.

Background

The injection mold is a tool capable of endowing plastic products with complete structures and accurate sizes, is commonly used in the working condition of mass production of parts with complicated shapes, generally comprises an upper mold, a lower mold, an ejector plate and the like, when the parts are produced, plastics are firstly added into a heating material cylinder of the injection molding machine, the plastics are heated and melted, under the pushing of a screw rod or a plunger of the injection molding machine, the plastics enter a mold cavity through a nozzle and a mold pouring system, the plastics are hardened and shaped into the injection products due to physical and chemical actions, then the mold is opened to separate a fixed mold from a movable mold, finally the injection products are ejected out through an ejection mechanism of the ejector plate, the injection products can be molded in different injection mold cavities according to actual requirements, so that plastic products with different shapes can be obtained, and diversified requirements are met.

As shown in fig. 1 to 3, a semi-arc workpiece exists on the market at present, which includes a body portion having a semi-arc shape, the body portion includes two opposite arc arches, a first groove is disposed on the top side of the outer portion of the arc arch on the higher side, a protruding ring is disposed on the inner bottom wall of the first groove, a plurality of first connection holes are arranged in the first groove along the circumferential direction, a second groove is disposed on the bottom side of the outer portion of the arc arch on the higher side, a second connection hole, a third connection hole and a first connection bump are disposed in the second groove on the inner side of the arc arch on the higher side, a second connection bump and a third connection bump are disposed on the inner side of the arc arch on the higher side, and in the process of producing the semi-arc workpiece, the second connection hole and the third connection hole are difficult to demold when the upper mold and the lower mold are opened, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the efficiency of production semiarc shape work piece, this application provides a semiarc casing forming die.

The above object of the present invention is achieved by the following technical solutions:

the fixed die is provided with a female die, and the female die is provided with a first forming column for forming a first groove;

the movable die is provided with a core, the movable die is used for being matched with the fixed die to form a die set, when the movable die is matched with the fixed die, a cavity with the shape consistent with that of the body part is formed between the core and the concave die in a surrounding mode, and the movable die is provided with a core-pulling assembly and an ejection mechanism for forming a second groove;

the core pulling assembly comprises an inclined guide rod, a sliding block and a forming insert, the inclined guide rod is fixedly connected to the fixed die, the sliding block is connected to the top of the movable die in a sliding mode, the bottom of the inclined guide rod obliquely penetrates through the sliding block and is matched with the sliding block in a sliding mode, and the forming insert is fixedly connected to one side, close to the cavity, of the sliding block;

in the process of opening the movable mold and the fixed mold, the inclined guide rod applies force to the slide block to enable the slide block to slide away from the cavity; in the process of closing the movable mold and the fixed mold, the inclined guide rod applies a force to the sliding block to enable the sliding block to slide close to the cavity, so that the molding insert is movably inserted into the cavity.

Through adopting above-mentioned technical scheme, when the mould die sinking, the cover half is kept away from to the movable mould along vertical direction downstream, drive simultaneously and slide and connect the slider downstream at the movable mould top, the surface of oblique guide arm is exerted to the slider this moment and is made the slider keep away from the gliding thrust of die cavity on the horizontal direction, thereby make the slider slide along the direction of keeping away from the die cavity at the top of movable mould, and then make fixed connection slide along the direction of keeping away from the die cavity in the forming insert of slider, be convenient for the separation of forming insert and work piece, realize the drawing of patterns at last, can reduce the drawing of patterns degree of difficulty, improve the efficiency of production work piece.

The present application may be further configured in a preferred example to: the die is provided with a first forming column for forming a first groove, a plurality of first forming lugs are arranged at the bottom of the first forming column along the circumferential direction of the first forming column and used for forming a first connecting hole, a convex ring forming groove and a convex ring forming lug arranged in the convex ring forming groove are arranged at the center of the bottom of the first forming column, and a ring cavity for forming a convex ring of the inner bottom wall of the first groove is formed between the convex ring forming groove and the convex ring forming lug.

Through adopting above-mentioned technical scheme, first shaping post can block fluid plastics's flow to realize the shaping of first recess, under the effect of a plurality of first shaping lug butt in the core, the shaping is realized to a plurality of first connecting holes, and under the effect of bulge loop shaping recess and bulge loop shaping lug, the shaping is realized to the bulge loop of diapire in the first recess, satisfies the service behavior, and the structure is ingenious and practical.

The present application may be further configured in a preferred example to: the molding insert comprises a fixed seat and a third molding convex block, the third molding convex block is fixedly connected to the fixed seat and used for molding a third connecting hole in a second groove, the fixed seat is fixedly connected to one side, close to the cavity, of the sliding block, the fixed seat is provided with a first molding groove, and the first molding groove is used for molding a first connecting convex block on the inner groove wall of the second groove.

Through adopting above-mentioned technical scheme, the fixing base can block the flow of fluid plastics to realize the shaping of second recess, provide the mounted position for the third shaping lug simultaneously, thereby realize the shaping of third connecting hole in the second recess, and under the effect of first shaping recess, realize the shaping of the first connecting lug of cell wall in the second recess, satisfy the operating mode.

The application may be further configured in a preferred example to: the ejection mechanism comprises an inclined ejector rod, the inclined ejector rod slides to be connected and runs through the fixed die, the top of the inclined rod faces towards the die cavity, a second forming groove used for forming a second connecting lug is formed in one side of the inclined ejector rod, a third forming groove used for forming a third connecting lug is formed in the bottom wall of the second forming groove, the second forming lug is used for forming a second connecting hole and fixedly connected with the groove walls on the two opposite sides of the second forming groove, the second forming lug is located along the length direction of the third forming groove, the bottom wall of the second forming groove runs through the third forming groove to the bottom wall of the third forming groove, the second forming groove is fixedly connected with a sliding seat at the bottom of the inclined ejector rod, and the sliding seat is located in an ejector plate at the bottom of the die in a sliding mode in the sliding direction of the sliding block.

Through adopting above-mentioned technical scheme, under the effect of second shaping recess and third shaping recess, shaping is realized to second connecting lug and third connecting lug, and under the effect of second shaping lug, the shaping is realized to the second connecting hole, after the die sinking, injection molding machine drive thimble board upward movement, drive oblique ejector pin upward movement simultaneously, the oblique ejector pin applys to the seat of sliding this moment and makes the seat of sliding be close to the gliding thrust of die cavity at thimble board top, thereby make the seat of sliding drive oblique ejector pin and be close to the removal of die cavity direction, and then make oblique ejector pin will form the work piece and push away and fall toward the direction of keeping away from the slider.

The application may be further configured in a preferred example to: the sliding seat top is equipped with the mounting groove, the mounting groove diapire is equipped with rotates the groove, oblique ejector pin bottom rotate connect in rotate the inslot, the groove width of mounting groove slightly is greater than rotate the groove width in groove.

Through adopting above-mentioned technical scheme, because the groove width of mounting groove slightly is greater than the groove width of rotating the groove, oblique ejector pin can rotate small range, prevents the appearance of dead point, is convenient for push away the shaping work piece and falls, is applicable to the operating mode of this mould.

The application may be further configured in a preferred example to: one side of the sliding block, which is far away from the die cavity, is detachably and fixedly connected with a wear-resistant sheet.

Through adopting above-mentioned technical scheme, set up the wear pad and can prevent that the slider from receiving the damage when cooperating with the cover half to through the mode installation that can dismantle fixed connection, the impaired wear pad of operating personnel in time changing of being convenient for.

The present application may be further configured in a preferred example to: the top of the movable die is detachably and fixedly connected with a wear-resistant strip.

Through adopting above-mentioned technical scheme, set up wear-resisting strip and can prevent that the slider from receiving the damage when sliding the cooperation with the movable mould to through the mode installation that can dismantle fixed connection, the impaired wear-resisting strip of operating personnel in time of being convenient for is changed.

The present application may be further configured in a preferred example to: and a limit screw is arranged on one side of the top of the movable die, which is far away from the cavity, and the limit screw is positioned on the sliding path of the sliding block on the movable die.

Through adopting above-mentioned technical scheme, set up stop screw and can prevent that the slider breaks away from in the movable mould when the die sinking.

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

1. when the mould die sinking, the cover half is kept away from to the movable mould along vertical direction lapse, drive simultaneously and slide and connect the slider lapse at the movable mould top, the outer surface of oblique guide arm is exerted to the slider this moment and is made the slider keep away from the gliding thrust of die cavity on the horizontal direction, thereby make the slider slide along the direction of keeping away from the die cavity at the top of movable mould, and then make the forming insert of fixed connection in slider can slide along the direction of keeping away from the die cavity, be convenient for the separation of forming insert and work piece, realize the drawing of patterns at last, can reduce the drawing of patterns degree of difficulty, improve the efficiency of production work piece.

2. Under the effect of second shaping recess and third shaping recess, the shaping is realized to second connection lug and third connection lug, and under the effect of second shaping lug, the shaping is realized to the second connecting hole, after the die sinking, injection molding machine drive thimble board upward movement, drive oblique ejector pin upward movement simultaneously, oblique ejector pin applys to the seat of sliding this moment and makes the seat of sliding be close to the gliding thrust of die cavity at thimble board top, thereby make the seat of sliding drive oblique ejector pin and be close to the die cavity direction and remove, and then make oblique ejector pin with the direction of shaping work piece toward keeping away from the slider and push away.

3. Because the groove width of mounting groove slightly is greater than the groove width of rotating the groove, the oblique ejector pin can rotate small range, prevents the appearance of dead point, is convenient for push away the shaping work piece and falls, is applicable to the operating mode of this mould.

Drawings

FIG. 1 is a schematic structural view of a half-arc housing in the present application;

FIG. 2 is another schematic structural view of a half-arc housing of the present application;

FIG. 3 is a schematic view of another configuration of a half arc housing of the present application;

FIG. 4 is a schematic view of the overall structure of a half-arc shell forming die in the present application;

FIG. 5 is a schematic view of the assembly relationship between the A plate and the B plate in the present application;

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

FIG. 7 is a schematic view of the structure of the stationary mold in the present application;

FIG. 8 is a schematic structural view of a core back assembly of the present application;

FIG. 9 is a sectional view of the stationary mold and the movable mold in this application when the two are clamped together;

FIG. 10 is an enlarged partial schematic view of portion B of FIG. 9;

FIG. 11 is a schematic structural view of the lifter of the present application;

fig. 12 is a partially enlarged schematic view of a portion C in fig. 11.

Reference numerals: 1. fixing a mold; 11. fixing a template; 12. a, a plate; 2. moving the mold; 21. b, plate; 22. cushion blocks; 23. moving the template; 24. an upper ejector plate; 25. a lower ejector plate; 3. a female die; 4. a core; 5. a body portion; 6. a first groove; 7. a first molding column; 8. a first molding bump; 9. forming a groove by the convex ring; 10. forming a convex block by the convex ring; 12. a convex ring; 13. a first connection hole; 14. a second groove; 15. an arcuate arch portion; 16. a core pulling assembly; 161. an inclined guide rod; 162. a slider; 163. forming the insert; 1631. a fixed seat; 1632. a third shaped bump; 17. a third connection hole; 18. a first molding groove; 19. a first connection bump; 20. wear resistant strips; 26. a wear resistant sheet; 27. a limit screw; 28. an ejection mechanism; 281. an oblique ejector rod; 282. a sliding seat; 29. mounting grooves; 30. a rotating groove; 31. a second connection bump; 32. a second forming groove; 33. a third connecting bump; 34. a third forming groove; 35. a second connection hole; 36. and a second molding bump.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

It should be noted that the terms "first", "second", etc. in the present invention are used for distinguishing similar objects, and are not necessarily used for describing a particular order or sequence. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

A half arc case forming die of the present application is described below with reference to the accompanying drawings.

As shown in fig. 4, the half arc shell forming mold comprises a fixed mold 1 and a movable mold 2, the fixed mold 1 and the movable mold 2 are both mounted on an injection molding machine, and the injection molding machine can drive the movable mold 2 to move close to or away from the fixed mold 1, so as to realize the functions of mold opening and mold closing of the mold, in this embodiment, the mold adopts a large water gap mold base, namely a two-plate mold base, the large water gap mold base comprises a fixed mold plate 11, an a plate 12, a B plate 21, a cushion block 22 and a movable mold plate 23 which are sequentially connected from top to bottom, and an upper ejector plate 24 and a lower ejector plate 25 which are mounted on the movable mold plate 23, wherein the fixed mold 1 comprises the fixed mold plate 11 and the a plate 12, the movable mold 2 comprises the B plate 21, the cushion block 22, the movable mold plate 23 and the upper ejector plate 24 and the lower ejector plate 25, and the connection mode among the components in the large water gap mold base and the cooling water path in the large water gap mold base are common knowledge of the skilled person, and will not be described herein;

as shown in fig. 5, a female die 3 is arranged on a fixed die 1, the female die 3 is arranged on an a plate 12 in an insert type design mode, a core 4 is arranged on a movable die 2, the core 4 is arranged on a B plate 21 in an insert type design mode, when the movable die 2 and the fixed die 1 are closed, a cavity with the shape consistent with that of a body part 5 is defined between the core 4 and the female die 3, a runner is arranged on a fixed die plate 11, an operator can adjust the opening mode of the runner according to requirements without limitation, and the operator sends heated and melted fluid plastics into the runner through an injection molding machine to enable the fluid plastics to flow in the cavity to mold the body part 5;

as shown in fig. 6, a first molding column 7 for molding a first groove 6 is fixedly installed on the female die 3, the first molding column 7 is cylindrical, a plurality of first molding protrusions 8 are arranged at the bottom of the first molding column 7 along the circumferential direction of the first molding column 7, a collar molding groove 9 and a collar molding protrusion 10 arranged in the collar molding groove 9 are arranged at the center of the bottom of the first molding column 7, a ring cavity for molding a collar 12 at the inner bottom wall of the first groove 6 is formed between the collar molding groove 9 and the collar molding protrusion 10, the first molding column 7 can block the flow of fluid plastics to mold the first groove 6, a plurality of first connecting holes 13 are formed under the action of the plurality of first molding protrusions 8 abutting against the core 4, and the collar 12 at the inner bottom wall of the first groove 6 is molded under the action of the collar molding groove 9 and the collar molding protrusion 10, so as to meet the use condition;

as shown in fig. 7 and 8, in order to mold the second groove 14 outside the arc-shaped arch 15 on the higher side, a core pulling assembly 16 for molding the second groove 14 is disposed on the movable mold 2, the core pulling assembly 16 includes a slant guide rod 161, a slider 162 and a molding insert 163, specifically, the molding insert 163 includes a fixing seat 1631 and a third molding protrusion 1632, the fixing seat 1631 is fixedly connected to one side of the slider 162 close to the cavity, the third molding protrusion 1632 is fixedly connected to the fixing seat 1631, the fixing seat 1631 can block the flow of the fluid plastic to mold the second groove 14, and at the same time, an installation position is provided for the third molding protrusion 1632, so as to mold the third connection hole 17 in the second groove 14, the fixing seat 1631 is provided with a first molding groove 18, under the action of the first forming groove 18, forming of the first connecting bump 19 on the inner groove wall of the second groove 14 is achieved, the top of the inclined guide rod 161 is fixedly connected into the A plate 12 of the fixed die 1, the sliding block 162 is connected to the top of the B plate 21 in a sliding mode along the width direction of the B plate 21, the top of the B plate 21 is detachably connected with the wear-resistant strip 20 in a threaded connection mode, the sliding block 162 can be prevented from being damaged when being matched with the B plate 21 in a sliding mode, the sliding block is installed in a threaded connection mode, operators can replace the damaged wear-resistant strip 20 conveniently in time, the bottom of the inclined guide rod 161 is obliquely arranged in a direction away from the fixed die 1 and penetrates through the sliding block 162, meanwhile, the inclined guide rod 161 is matched with the sliding block insert 162 in a sliding mode, and the forming insert 163 is fixedly connected to one side, close to the cavity, of the sliding block 162;

as shown in fig. 9, when the mold is opened, the injection molding machine drives the movable mold 2 to move downward along the vertical direction away from the fixed mold 1, and simultaneously drives the sliding block 162 connected to the top of the B plate 21 to move downward, at this time, the outer surface of the inclined guide rod 161 applies a thrust force to the sliding block 162 to make the sliding block 162 move downward along the horizontal direction away from the cavity, so that the sliding block 162 slides at the top of the movable mold 2 along the direction away from the cavity, and further the molding insert 163 fixedly connected to the sliding block 162 can slide along the direction away from the cavity, thereby facilitating the separation of the molding insert 163 from the workpiece, and finally realizing demolding, thereby reducing the difficulty of demolding, improving the efficiency of producing the workpiece, and the side of the sliding block 162 away from the cavity can be detachably and fixedly connected with the wear-resistant plate 26 by means of threaded connection, when the mold is closed, the injection molding machine drives the movable mold 2 to move upward along the vertical direction close to the fixed mold 1 until the a plate 12 of the fixed mold 1 cooperates with the sliding block 162 to realize the fixed sliding block 162, thereby realizing the closing of the mold, and the mold 26 can prevent the sliding block 162 from being damaged when the sliding block 162 cooperates with the a plate 12 of the fixed mold 1, and the sliding block 27 can be installed by means of detachable and can prevent the sliding block 21 from being separated from the top of the movable mold, and the movable mold 21 when the movable mold is located on the top of the movable mold.

As shown in fig. 9 and 10, the movable mold 2 is provided with an ejection mechanism 28, the ejection mechanism 28 includes an inclined top rod 281 and a sliding seat 282, the bottom of the inclined top rod 281 is rotatably connected to the sliding seat 282, the inclined top rod 281 penetrates through the B plate 21 of the movable mold 2 and is in sliding fit with the B plate 21, the top of the inclined top rod is inclined towards the cavity, the sliding seat 282 is connected to an ejector plate at the bottom of the mold in a sliding manner along the sliding direction of the slider 162, after the mold is opened, the injection molding machine drives the ejector plate to move upwards while driving the inclined top rod 281 to move upwards, at this time, the inclined top rod 281 applies a thrust force to the sliding seat 282 to make the sliding seat 282 slide close to the cavity at the top of the ejector plate, so that the sliding seat 282 drives the inclined top rod 281 to move close to the cavity, further, the inclined ejector 281 pushes the molded workpiece away from the slider 162, further, the top of the sliding seat 282 is provided with an installation groove 29, the bottom wall of the installation groove 29 is provided with a rotating groove 30, the bottom of the inclined ejector 281 is rotatably connected in the rotating groove 30, the groove width of the installation groove 29 is slightly larger than that of the rotating groove 30, when the injection molding machine pushes the ejector plate to make the inclined ejector 281 slide on the B plate 21, because the groove width of the installation groove 29 is slightly larger than that of the rotating groove 30, the inclined ejector 281 can rotate by a slight extent, compared with the case that the bottom of the inclined ejector 281 is fixedly connected to the sliding seat 282, dead points can be prevented, the inclined ejector 281 can apply acting forces in different directions on the molded workpiece, the molded workpiece can be pushed away conveniently, and the mold is suitable for the working condition of the mold;

as shown in fig. 11 and 12, in order to mold the second groove 14 inside the arc-shaped portion 15 on the higher side, a second molding groove 32 for molding the second connecting protrusion 31 is provided on one side of the inclined push rod 281 close to the slider 162, a third molding groove 34 for molding the third connecting protrusion 33 is provided on the bottom wall of the second molding groove 32, a second molding protrusion 36 for molding the second connecting hole 35 is fixedly connected to each of opposite side groove walls of the second molding groove 32, the second molding protrusion 36 penetrates through the third molding groove 34 from the bottom wall of the second molding groove 32 to the bottom wall of the third molding groove 34 along the length direction of the third molding groove 34, the second connecting protrusion 31 and the third connecting protrusion 33 are molded under the action of the second molding groove 32 and the third molding groove 34, and the second connecting hole 35 is molded under the action of the second molding protrusion 36.

When a semi-arc shell workpiece is produced, an operator installs the fixed die 1 and the movable die 2 on a base of an injection molding machine, drives the movable die 2 to move upwards through the injection molding machine so as to enable the movable die 2 and the fixed die 1 to be matched, then flows heated and melted fluid plastics to a first cavity through a flow channel formed in a fixed die plate 11 through the injection molding machine so as to enable the cavity to mold the body part 5, and under the action of a first molding column 7 fixedly connected to a female die 3, molding of a first groove 6 and a convex ring 12 of the inner bottom wall of the first groove 6 is achieved, molding of a second connecting hole 35, a third connecting hole 17 and a second connecting convex block 31 in a second groove 14 and a sliding block 281 is achieved under the action of a molding insert 163 fixedly connected to a sliding block 162 and a second molding groove 32 and a third molding groove 34 arranged on an inclined ejector rod 281, after the semi-arc shell workpiece is molded, the molding insert 163 is separated from the molded workpiece through a core pulling assembly 16, then drives the movable die 2 to move downwards so as to enable the movable die 2 and the upper ejector rod 25 to push the movable die 2 to move upwards, thereby reducing the difficulty in producing the molded workpiece, and the molded workpiece is achieved.

The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. The utility model provides a half arc casing forming die which characterized in that includes:

the fixed die (1), the fixed die (1) is provided with a concave die (3);

the movable die (2) is provided with a core (4), the movable die (2) is used for being matched with the fixed die (1) to form a pair of die sets, when the movable die (2) is matched with the fixed die (1), a cavity which is consistent with the shape of the body part (5) is formed between the core (4) and the concave die (3) in a surrounding mode, and the movable die (2) is provided with a core-pulling assembly (16) and an ejection mechanism (28) which are used for forming a second groove (14);

the core pulling assembly (16) comprises an inclined guide rod (161), a sliding block (162) and a forming insert (163), the inclined guide rod (161) is fixedly connected to the fixed die (1), the sliding block (162) is connected to the top of the movable die (2) in a sliding mode, the bottom of the inclined guide rod (161) obliquely penetrates through the sliding block (162) and is matched with the sliding block (162) in a sliding mode, and the forming insert (163) is fixedly connected to one side, close to the cavity, of the sliding block (162);

in the process of opening the movable die (2) and the fixed die (1), the inclined guide rod (161) applies force to the sliding block (162) to enable the sliding block (162) to slide away from the cavity; in the process of closing the movable die (2) and the fixed die (1), the inclined guide rod (161) applies force to the sliding block (162) to enable the sliding block (162) to be close to the cavity to slide, so that the molding insert (163) is movably inserted into the cavity.

2. The half-arc shell forming die as claimed in claim 1, wherein a first forming column (7) for forming a first groove (6) is arranged on the female die (3), a plurality of first forming projections (8) are arranged at the bottom of the first forming column (7) along the circumferential direction of the first forming column (7), the first forming projections (8) are used for forming a first connecting hole (13), a convex ring forming groove (9) and a convex ring forming projection (10) arranged in the convex ring forming groove (9) are arranged at the center of the bottom of the first forming column (7), and a ring cavity for forming a convex ring (12) at the inner bottom wall of the first groove (6) is formed between the convex ring forming groove (9) and the convex ring forming projection (10).

3. The half-arc shell molding die of claim 1, wherein the molding insert (163) comprises a fixing base (1631) and a third molding protrusion (1632), the third molding protrusion (1632) is fixedly connected to the fixing base (1631), the third molding protrusion (1632) is used for molding a third connecting hole (17) in a second groove (14), the fixing base (1631) is fixedly connected to one side of the sliding block (162) close to the cavity, the fixing base (1631) is provided with a first molding groove (18), and the first molding groove (18) is used for molding a first connecting protrusion (19) on the inner wall of the second groove (14).

4. A half-arc shell molding die as claimed in claim 1, wherein the ejection mechanism (28) comprises an inclined ejector rod (281), the inclined ejector rod (281) is connected in a sliding manner and penetrates through the fixed die (1), the top of the inclined ejector rod is arranged obliquely towards the die cavity, one side of the inclined ejector rod (281) is provided with a second molding groove (32) for molding a second connecting bump (31), the bottom wall of the second molding groove (32) is provided with a third molding groove (34) for molding a third connecting bump (33), the opposite side groove walls of the second molding groove (32) are fixedly connected with second molding bumps (36) for molding a second connecting hole (35), the second molding bumps (36) penetrate through the bottom wall of the second molding groove (32) from the bottom wall of the third molding groove (34) to the bottom wall of the third molding groove (34) along the length direction of the third molding groove (34), the bottom of the inclined ejector rod (281) of the second molding groove (32) is rotatably connected with a sliding block (282) connected with the sliding block (282) along the sliding direction of the mold.

5. The half-arc shell molding die of claim 4, wherein the sliding seat (282) is provided with an installation groove (29) at the top, the bottom wall of the installation groove (29) is provided with a rotation groove (30), the bottom of the inclined top rod (281) is rotatably connected in the rotation groove (30), and the groove width of the installation groove (29) is slightly larger than that of the rotation groove (30).

6. The half-arc shell forming die of claim 1, wherein a wear plate (26) is detachably and fixedly connected to one side of the sliding block (162) away from the die cavity.

7. The half-arc shell forming die of claim 1, characterized in that the top of the movable die (2) is detachably and fixedly connected with a wear-resistant strip (20).

8. A half-arc case forming die as claimed in claim 1, wherein a side of a top of said movable die (2) away from said cavity is provided with a limit screw (27), and said limit screw (27) is located on a sliding path of said sliding block (162) on said movable die (2).

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