Combined insert injection mold

Abstract

The utility model provides a combined insert injection mold which comprises a fixed mold and a movable mold, a fixed mold frame, a first insert assembly and a second insert assembly are arranged in the fixed mold, the first insert assembly and the second insert assembly are detachably arranged in the middle of the fixed mold frame, the first insert assembly comprises a first insert and a first insert, and the second insert assembly comprises a second insert and a second insert. The first insert assembly comprises a first insert and a second insert, the first insert is detachably arranged on the first insert, a first thin wall part is arranged on the first insert, the second insert assembly comprises a second insert and a second insert, the second insert is detachably arranged on the second insert, and a second thin wall part is arranged on the second insert; a movable mold frame is arranged in the movable mold, a forming part is arranged in the middle of the movable mold frame, the movable mold frame and the fixed mold frame are oppositely arranged, the forming part corresponds to the first insert assembly and the second insert assembly, and a product cavity is formed among the forming part, the first insert assembly and the second insert assembly; when the insert or the insert block is damaged, the damaged insert or the insert block can be replaced independently in a small range, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a combined insert injection mold. Background Art

[0002] Injection molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete configurations and precise dimensions. Existing injection molds generally set molding structures directly in the mold core, or form molding structures through small inserts to form plastic products through injection molding. For mold cores with complex structures and thin walls with small thickness in some parts, the mold core is easily damaged after long-term and multiple injection molding. At this time, the entire mold core needs to be replaced, resulting in high production costs. Summary of the invention

[0003] The utility model aims to provide a combined insert injection mold which is convenient for overhauling and replacing parts.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a combined insert injection mold, including a fixed mold and a movable mold, wherein a fixed mold frame, a first insert assembly and a second insert assembly are arranged in the fixed mold, the first insert assembly and the second insert assembly are detachably arranged in the middle part of the fixed mold frame, the first insert assembly includes a first insert block and a first insert, the first insert is detachably arranged on the first insert block, and the first insert block is provided with a first thin-walled portion, the second insert assembly includes a second insert block and a second insert, the second insert is detachably arranged on the second insert block, and the second insert block is provided with a second thin-walled portion; a movable mold frame is arranged in the movable mold, a molding portion is arranged in the middle part of the movable mold frame, the movable mold frame is arranged opposite to the fixed mold frame, the molding portion is arranged corresponding to the first insert assembly and the second insert assembly respectively, and a product cavity is formed between the three.

[0005] It can be seen from the above scheme that by detachably arranging the first insert and the second insert in the fixed mold frame, and respectively arranging the first thin-walled portion and the second thin-walled portion on the first insert and the second insert, the fixed mold frame and the first insert and the second insert can be separated separately, which is convenient for replacing the damaged insert or insert in a small range separately when the thin-walled portion or the insert is damaged, which is beneficial to reducing production costs.

[0006] A further solution is that the first thin-walled portion and the second thin-walled portion both extend into the product cavity, the first thin-walled portion is convexly arranged on one side or the middle of the first insert, and the thickness of the first thin-walled portion is smaller than the convex height of the first thin-walled portion, and the second thin-walled portion is convexly arranged on one side or the middle of the second insert, and the thickness of the second thin-walled portion is smaller than the convex height of the second thin-walled portion.

[0007] A further solution is that a mounting hole is opened in the middle of the fixed mold frame, the first insert is detachably arranged in the mounting hole, the first insert is respectively provided with a first side wall and a second side wall on two adjacent sides, the first side wall and the second side wall are respectively adjacent to the two side hole walls adjacent to the mounting hole, and the first insert exhaust groove is provided on the first side wall and / or the second side wall.

[0008] A further solution is that a convex portion is provided in the middle of the first insert; a concave portion is provided in the middle of the second insert, the concave portion and the convex portion are matched with each other, and the second insert is provided with a first outer wall, a second outer wall and a third outer wall, the first outer wall, the second outer wall and the third outer wall are respectively adjacent to the hole walls corresponding to the mounting hole, and at least one of the first outer wall, the second outer wall and the third outer wall is provided with a second insert exhaust groove.

[0009] A further solution is that a third insert assembly is also provided in the fixed mold, and the third insert assembly includes a third insert and two third inserts. The third insert is arranged between the first insert and the second insert. The third insert is provided with a protrusion, a third insert exhaust groove and two L-shaped grooves. The protrusion is arranged between the two L-shaped grooves, and the two third inserts are respectively arranged in the corresponding L-shaped grooves. The third insert exhaust groove is arranged on one side wall of the third insert.

[0010] It can be seen from the above scheme that by setting up an oblique core pulling component, a relatively complex product structure can be met, which is beneficial to the mass production of the product and improves the service life of the mold.

[0011] A further solution is that a fourth insert assembly is also provided in the fixed mold, the fourth insert assembly includes a fourth insert and a fourth insert, the fourth insert is arranged on the side of the third insert facing away from the convex portion, the fourth insert is provided with a third thin-walled portion and a fourth-insert venting groove, the third thin-walled portion extends into the product cavity, the fourth-insert venting groove is provided on a side wall of the fourth insert, and the fourth insert is detachably provided on the fourth insert.

[0012] A further solution is that a fifth insert assembly is also provided in the fixed mold, the fifth insert assembly includes a fifth insert, the fifth insert is arranged on one side of the first insert and one side of the fourth insert at the same time, the fifth insert is provided with a fourth thin-walled portion and a fifth-insert exhaust groove, the fourth thin-walled portion extends into the product cavity, and the fifth-insert exhaust groove is arranged on one side wall of the fifth insert.

[0013] A further solution is that the fixed mold is also provided with an oblique core pulling assembly, which includes a driving seat and an oblique top, the driving seat is connected to the fixed mold, the first end of the oblique top is slidably connected to the driving seat, the second end of the oblique top is provided with a cylindrical portion and two wing portions, the two wing portions are respectively arranged on both sides of the cylindrical portion, the cylindrical portion and the two wing portions both pass through the first insert and extend obliquely into the product cavity, and when the mold is opened, the driving seat can drive the second end of the oblique top to exit the product cavity.

[0014] A further solution is that a first slider assembly and a second slider assembly are further provided between the fixed mold and the movable mold, and the first slider assembly and the second slider assembly are respectively provided on both sides of the first direction of the product cavity; the first slider assembly includes a first oblique rod, a first slider seat and a first slider piece, the first slider seat is provided on the movable mold, the first end of the first slider piece is connected to the first slider seat, the second end of the first slider piece is provided with a first slider insert, the second end of the first slider piece and the first slider insert both extend into the product cavity, one end of the first oblique rod is connected to the fixed mold, and the other end of the first oblique rod is obliquely inserted in the first slider seat, and when the mold is opened, the first The inclined rod can drive the first slider seat and the first slider member to move away from the product cavity along the direction perpendicular to the mold opening; the second slider assembly includes a second inclined rod, a second slider seat and a second slider member, the second slider seat is arranged on the movable mold, the first end of the second slider member is connected to the second slider seat, and a second slider insert is arranged on the second end of the second slider member, the second end of the second slider member and the second slider insert both extend into the product cavity, one end of the second inclined rod is connected to the fixed mold, and the other end of the second inclined rod is obliquely inserted in the second slider seat, and when the mold is opened, the second inclined rod can drive the second slider seat and the second slider member to move away from the product cavity along the direction perpendicular to the mold opening.

[0015] A further solution is that a third slider assembly and a fourth slider assembly are further provided between the fixed mold and the movable mold, and the third slider assembly and the fourth slider assembly are respectively provided on both sides of the second direction of the product cavity; the third slider assembly includes a third oblique rod, a third slider seat and a third slider piece, the third slider seat is connected to the movable mold, the first end of the third slider piece is connected to the third slider seat, a third slider insert is provided on the second end of the third slider piece, the second end of the third slider insert and the third slider insert both extend into the product cavity, one end of the third oblique rod is connected to the fixed mold, and the other end of the third oblique rod is obliquely inserted in the third slider seat, and when the mold is opened, the third oblique rod can drive the third slider seat and the third slider piece to move away from the product cavity along the direction perpendicular to the mold opening; the fourth slider assembly includes a fourth oblique rod, a fourth slider seat The fourth slider seat is connected to the movable mold, the first end of the fourth slider is connected to the fourth slider seat, the second end of the fourth slider is provided with a fourth slider insert and an exhaust insert, the exhaust insert is provided on the fourth slider insert, the second end of the fourth slider, the fourth slider insert and the exhaust insert all extend into the product cavity, an annular exhaust groove is provided on the peripheral wall of the exhaust insert, a connecting groove is provided on the fourth slider insert, a strip exhaust groove extending back to the product cavity is provided on the fourth slider, the annular exhaust groove is connected with the strip exhaust groove through the connecting groove, one end of the fourth oblique rod is connected to the fixed mold, and the other end of the fourth oblique rod is obliquely inserted in the fourth slider seat, when the mold is opened, the fourth oblique rod can drive the fourth slider seat and the fourth slider to move away from the product cavity along the direction perpendicular to the mold opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a product structure diagram of injection molding production using the embodiment of the utility model.

[0017] Figure 2 It is a structural diagram of an embodiment of the utility model.

[0018] Figure 3 It is a structural diagram of the main components in the embodiment of the utility model.

[0019] Figure 4 It is a top view of the main components in the embodiment of the utility model.

[0020] Figure 5 yes Figure 4 Cross-sectional view at AA in the middle.

[0021] Figure 6 yes Figure 4 Cross-sectional view at BB in the middle.

[0022] Figure 7 It is an exploded view of the main components in the embodiment of the utility model.

[0023] Figure 8 It is a structural diagram of the fixed mold frame and each insert component in the embodiment of the utility model.

[0024] Fig. 9 It is an exploded view of the fixed mold frame and each insert component in the embodiment of the utility model.

[0025] Fig.10 It is an exploded view of each insert in the embodiment of the utility model.

[0026] Fig.11 It is an exploded view of the fourth slider assembly in the embodiment of the utility model.

[0027] Fig.12 It is a cross-sectional view of the fourth slide assembly in the embodiment of the utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Implementation

[0029] See also Figure 1 The structure of product 1 is relatively complex. Product 1 is provided with a cylindrical portion 11, two tunnel portions 12 and multiple concave-convex structures. The concave-convex structures are arranged according to the product design drawings. The cylindrical portion 11 obliquely penetrates the upper and lower sides of the product 1, and the two tunnel portions 12 are respectively arranged on the left and right sides of the cylindrical portion 11.

[0030] See also Figures 2 to 10 The present embodiment provides a combined insert injection mold, comprising a fixed mold 2 and a movable mold 3.

[0031] The fixed mold frame 4, the first insert component 5a, the second insert component 5b, the third insert component 5c, the fourth insert component 5d and the fifth insert component 5e are arranged in the fixed mold 2. A rectangular mounting hole 41 is opened in the middle of the fixed mold frame 4, and the first insert component 5a, the second insert component 5b, the third insert component 5c, the fourth insert component 5d and the fifth insert component 5e can be assembled into a rectangular shape matching the mounting hole 41, and the first insert component 5a, the second insert component 5b, the third insert component 5c, the fourth insert component 5d and the fifth insert component 5e can be detachably arranged in the mounting hole 41 of the fixed mold frame 4.

[0032] A movable mold frame 31 is provided in the movable mold 3, and a molding part is provided in the middle of the movable mold frame 31. The movable mold frame 31 is arranged opposite to the fixed mold frame 4, and the molding part is arranged opposite to the first insert component 5a, the second insert component 5b, the third insert component 5c, the fourth insert component 5d and the fifth insert component 5e respectively, and a product cavity for molding the product 1 is formed between the molding part and the first insert component 5a, the second insert component 5b, the third insert component 5c, the fourth insert component 5d and the fifth insert component 5e.

[0033] The first insert assembly 5a includes a first insert 51 and a plurality of first inserts 512. The plurality of first inserts 512 are detachably arranged on the first insert 51. One end of each of the first inserts 512 extends into the product cavity. The first insert 51 is provided with at least one first thin-walled portion 513. The first thin-walled portion 513 is convexly arranged on one side or the middle of the first insert 51, and the thickness of the first thin-walled portion 513 is less than the convex height of the first thin-walled portion 513.

[0034] The first insert 51 is provided with a first side wall and a second side wall on two adjacent sides, respectively, the first side wall is arranged perpendicular to the second side wall, and the first side wall and the second side wall are respectively adjacent to the two side hole walls adjacent to the mounting hole 41. A first insert exhaust groove 515 is provided on the first side wall and / or the second side wall. A convex portion 511 is provided in the middle of the first insert 51, and a first insert auxiliary exhaust groove 514 is opened on the side wall of the convex portion 511.

[0035] The second insert assembly 5b includes a second insert 52 and a plurality of second inserts 522. The plurality of second inserts 522 are detachably arranged on the second insert 52. One end of each first insert 512 extends into the product cavity. The second insert 52 is provided with at least one second thin-walled portion 523. The second thin-walled portion 523 is convexly arranged on one side or the middle of the second insert 52. The thickness of the second thin-walled portion 523 is less than the convex height of the second thin-walled portion 523. A concave portion 521 is provided in the middle of the second insert 52. The concave portion 521 is matched with the convex portion 511 in a concave-convex manner. The second insert 52 is provided with a first outer wall, a second outer wall and a third outer wall on three adjacent sides in sequence. The second outer wall is connected between the first outer wall and the third outer wall, and the second outer wall is perpendicular to the first outer wall and the third outer wall respectively. The first outer wall of the second insert 52 is coplanar with the first side wall of the first insert 51, and the first outer wall, the second outer wall and the third outer wall are respectively adjacent to the hole walls corresponding to the mounting hole 41, and at least one of the first outer wall, the second outer wall and the third outer wall is provided with a second insert exhaust groove 524, preferably, the first outer wall, the second outer wall and the third outer wall are all provided with a second insert exhaust groove 524, and the second insert exhaust groove 524 on the first outer wall is connected to the first insert exhaust groove 515 on the first side wall.

[0036] The third insert assembly 5c includes a third insert 53 and two third inserts 531. The third insert 53 is arranged between the first insert 51 and the second insert 52, and the third insert 53 is arranged on one side of the convex portion 511. The third insert 53 is provided with a protrusion 532, two third insert exhaust grooves 533 and two L-shaped grooves 534. The protrusion 532 and the convex portion 511 are both protruding toward one side, and the two L-shaped grooves 534 are respectively arranged on both sides of the protrusion 532. The two third inserts 531 are respectively arranged in the corresponding L-shaped grooves 534. The third insert 53 is provided with a third insert exhaust groove 533 on the side wall of the side facing away from the convex portion 511, and a third insert auxiliary exhaust groove 535 is provided on the side wall of the convex portion 532. The third insert auxiliary exhaust groove 535 is communicated with the first insert auxiliary exhaust groove 514.

[0037] The fourth insert assembly 5d includes a fourth insert 54 and two fourth inserts 541. The fourth insert 54 is arranged on the side of the third insert 53 facing away from the protrusion 511. The side wall of the third insert 53 is coplanar with the third outer wall of the second insert 52. The fourth insert 54 is provided with a fourth insert exhaust groove 542. The fourth insert exhaust groove 542 is arranged on the side wall of the fourth insert 54 facing away from the third insert 53, and the fourth insert exhaust groove 542 is connected with the second insert exhaust groove 524 on the third outer wall. The fourth insert 54 is also provided with a third thin-walled portion 543, which extends into the product cavity. The fourth insert 541 is detachably arranged on the fourth insert 54.

[0038] The fifth insert assembly 5e includes a fifth insert 55, which is arranged on one side of the first insert 51 and one side of the fourth insert 54. The fifth insert 55 is provided with a fourth thin-walled portion 551 and a fifth insert exhaust groove 552, the fourth thin-walled portion 551 extends into the product cavity, the fifth insert exhaust groove 552 is provided on a side wall of the fifth insert 55, the side wall of the fifth insert 55 is coplanar with the side wall of the fourth insert 54 on which the fourth insert exhaust groove 542 is provided, and the fifth insert exhaust groove 552 is communicated with the fourth insert exhaust groove 542.

[0039] The first insert exhaust groove 515, the first insert auxiliary exhaust groove 514, the third insert auxiliary exhaust groove 535, the second insert exhaust groove 524, the third insert exhaust groove 533, the fourth insert exhaust groove 542 and the fifth insert exhaust groove 552 can all be used for exhaust. Each insert exhaust groove is approximately arranged in an "I" shape. The first end of the insert exhaust groove is arranged close to the product cavity, and the second end of the insert exhaust groove is arranged away from the product cavity. The two ends of the insert exhaust groove are connected by a vertical groove. During injection molding, the molten plastic fluid quickly fills the product cavity and discharges the air in the product cavity to the insert exhaust groove to solve the problem of trapped air.

[0040] The shapes and positions of the first insert 512, the second insert 522, the third insert 531 and the fourth insert 541 of this embodiment are set according to the specific structure of the product 1. At least one of the first insert 512, the second insert 522, the third insert 531 and the fourth insert 541 is provided with an insert exhaust groove. The insert exhaust groove extends in the lateral direction of the insert. During injection molding, the air in the product cavity is discharged outward through the gaps between the inserts and the insert exhaust grooves, which is conducive to solving the problem of local air entrapment and improving product quality.

[0041] In this embodiment, a plurality of inserts are arranged in the fixed mold frame 4, and a plurality of inserts are arranged in the inserts. On the one hand, it is helpful to solve the problem that the mold has many and deep ribs and the molding glue is difficult to move. On the other hand, it is helpful to the molding exhaust, thereby solving the problem of air entrapment of the product 1. It is also beneficial to the later maintenance of the mold and the processing and replacement after damage, so as to extend the service life of the mold.

[0042] Combination Figure 3 and Figure 5The fixed mold 2 is also provided with an oblique core-pulling assembly 6, which includes a driving seat 61 and an inclined top 62. The driving seat 61 is connected to the fixed mold 2, and a slide groove 611 is obliquely provided in the driving seat 61 along the mold opening direction. The first end of the inclined top 62 is slidably connected in the slide groove 611, and the second end of the inclined top 62 is provided with a cylindrical portion 622 and two wing portions 623, and the two wing portions 623 are respectively arranged on both sides of the cylindrical portion 622. The cylindrical portion 622 and the two wing portions 623 both pass through the first insert 51 and obliquely extend into the product cavity, which is used to form the cylindrical portion 11 of the product 1. When the mold is opened, the inclined top 62 can move relative to the first insert 51, so that the second end of the inclined top 62 exits the product cavity.

[0043] Combination Figure 3 and Figure 7 A first slide assembly 7, a second slide assembly 8, a third slide assembly 9 and a fourth slide assembly 10 are also arranged between the fixed mold 2 and the movable mold 3. The first slide assembly 7 and the second slide assembly 8 are respectively arranged on both sides of the first direction of the product cavity, and the third slide assembly 9 and the fourth slide assembly 10 are respectively arranged on both sides of the second direction of the product cavity, and the first direction is perpendicular to the second direction.

[0044] The first slider assembly 7 includes a first inclined rod 71, a first slider seat 72 and a first slider member 73. The first slider seat 72 is connected to the movable mold 3. The first end of the first slider member 73 is connected to the first slider seat 72. The second end of the first slider member 73 extends into the product cavity. One end of the first inclined rod 71 is connected to the fixed mold 2. The other end of the first inclined rod 71 is obliquely inserted into the first slider seat 72. When the mold is opened, the first inclined rod 71 can drive the first slider seat 72 and the first slider member 73 to move away from the product cavity in a direction perpendicular to the mold opening, so as to facilitate demolding of the product 1.

[0045] The second slider assembly 8 includes a second inclined rod 81, a second slider seat 82 and a second slider member 83. The second slider seat 82 is connected to the movable mold 3. The first end of the second slider member 83 is connected to the second slider seat 82. The second end of the second slider member 83 extends into the product cavity. One end of the second inclined rod 81 is connected to the fixed mold 2. The other end of the second inclined rod 81 is obliquely inserted into the second slider seat 82. When the mold is opened, the second inclined rod 81 can drive the second slider seat 82 and the second slider member 83 to move away from the product cavity in a direction perpendicular to the mold opening, so as to facilitate demolding of the product 1.

[0046] A plurality of first row inserts 74 are disposed on the second end of the first row member 73, and a plurality of second row inserts 84 are disposed on the second end of the second row member 83, wherein one first row insert 74 and one second row insert 84 are disposed on opposite sides of the second end of the inclined top 62, and are used to form the tunnel portion 12 of the product 1. The specific structures of each first row insert 74 and each second row insert 84 are arranged according to the specific structure of the product 1.

[0047] The third slider assembly 9 includes a third inclined rod 91, a third slider seat 92 and a third slider piece 93. The third slider seat 92 is connected to the movable mold 3. The first end of the third slider piece 93 is connected to the third slider seat 92. A plurality of third slider inserts 94 are arranged on the second end of the third slider piece 93. The second end of the third slider piece 93 and the third slider inserts 94 both extend into the product cavity. One end of the third inclined rod 91 is connected to the fixed mold 2, and the other end of the third inclined rod 91 is obliquely inserted into the third slider seat 92. When the mold is opened, the third inclined rod 91 can drive the third slider seat 92 and the third slider piece 93 to move away from the product cavity in a direction perpendicular to the mold opening, so as to facilitate demolding of the product 1.

[0048] Combination Figure 6 , Fig.11 and Fig.12 The fourth slider assembly 10 includes a fourth inclined rod 101, a fourth slider seat 102 and a fourth slider piece 103. The fourth slider seat 102 is arranged on the movable mold 3. The first end of the fourth slider piece 103 is connected to the fourth slider seat 102. The second end of the fourth slider piece 103 extends into the product cavity. One end of the fourth inclined rod 101 is connected to the fixed mold 2. The other end of the fourth inclined rod 101 is obliquely inserted into the fourth slider seat 102. When the mold is opened, the fourth inclined rod 101 can drive the fourth slider seat 102 and the fourth slider piece 103 to move away from the product cavity along the vertical mold opening direction, so as to facilitate the demolding of the product 1.

[0049] The second end of the fourth slider 103 extends into the product cavity, and the fourth slider insert 104 and two exhaust inserts 105 are arranged on the second end of the fourth slider. A receiving groove 1041 is arranged on one end of the fourth slider insert 104, and the two exhaust inserts 105 are arranged in the receiving groove 1041. An annular exhaust groove 1051 is provided on the peripheral wall of the exhaust insert 105, and the annular exhaust groove 1051 is connected with the receiving groove 1041. A connecting groove 1042 is also provided on the fourth slider insert 104, and a strip exhaust groove 1031 extending away from the product cavity is provided on the fourth slider 103, and the annular exhaust groove 1051 is connected with the strip exhaust groove 1031 through the connecting groove 1042. When the mold is closed, the air in the product cavity can pass through the gap into the annular exhaust groove 1051, and be discharged to the strip exhaust groove 1031 through the connecting groove 1042, which is conducive to improving the air entrapment of the product and avoiding the occurrence of undesirable phenomena on the product surface.

[0050] In summary, it can be seen that the utility model detachably arranges the first insert and the second insert in the fixed mold frame, and respectively arranges the first thin-walled portion and the second thin-walled portion on the first insert and the second insert, so that the fixed mold frame and the first insert and the second insert can be separated separately, which is convenient for replacing the damaged insert or insert in a small range separately when the thin-walled portion or the insert is damaged, which is beneficial to reducing production costs.

[0051] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined insert injection mold, comprising a fixed mold and a movable mold, characterized in that: The fixed mold is provided with a fixed mold frame, a first insert assembly and a second insert assembly, the first insert assembly and the second insert assembly are detachably arranged in the middle of the fixed mold frame, the first insert assembly includes a first insert block and a first insert, the first insert is detachably arranged on the first insert block, and the first insert block is provided with a first thin-walled portion, the second insert assembly includes a second insert block and a second insert, the second insert is detachably arranged on the second insert block, and the second insert block is provided with a second thin-walled portion; A movable mold frame is arranged in the movable mold, a molding part is arranged in the middle of the movable mold frame, the movable mold frame is arranged opposite to the fixed mold frame, the molding part is arranged corresponding to the first insert assembly and the second insert assembly respectively, and a product cavity is formed between the three.

2. The combined insert injection mold according to claim 1, characterized in that: The first thin-walled portion and the second thin-walled portion both extend into the product cavity, the first thin-walled portion is convexly arranged on one side or the middle of the first insert, and the thickness of the first thin-walled portion is smaller than the convex height of the first thin-walled portion, and the second thin-walled portion is convexly arranged on one side or the middle of the second insert, and the thickness of the second thin-walled portion is smaller than the convex height of the second thin-walled portion.

3. The combined insert injection mold according to claim 1, characterized in that: A mounting hole is provided in the middle of the fixed mold frame, and the first insert is detachably arranged in the mounting hole. The first insert is respectively provided with a first side wall and a second side wall on two adjacent sides, and the first side wall and the second side wall are respectively adjacent to the two side hole walls adjacent to the mounting hole, and the first side wall and / or the second side wall are provided with a first insert exhaust groove.

4. The combined insert injection mold according to claim 3, characterized in that: A convex portion is provided in the middle of the first insert; A recess is provided in the middle of the second insert, and the recess is matched with the projection. The second insert is provided with a first outer wall, a second outer wall and a third outer wall. The first outer wall, the second outer wall and the third outer wall are respectively adjacent to the hole walls corresponding to the mounting hole, and a second insert exhaust groove is provided on at least one of the first outer wall, the second outer wall and the third outer wall.

5. The combined insert injection mold according to claim 4, characterized in that: A third insert assembly is also provided in the fixed mold, and the third insert assembly includes a third insert and two third inserts. The third insert is arranged between the first insert and the second insert. The third insert is provided with a protrusion, a third insert exhaust groove and two L-shaped grooves. The protrusion is arranged between the two L-shaped grooves, and the two third inserts are respectively arranged in the corresponding L-shaped grooves. The third insert exhaust groove is arranged on one side wall of the third insert.

6. The combined insert injection mold according to claim 5, characterized in that: A fourth insert assembly is also provided in the fixed mold, and the fourth insert assembly includes a fourth insert and a fourth insert. The fourth insert is provided on the side of the third insert facing away from the convex portion, and a third thin-walled portion and a fourth-insert exhaust groove are provided on the fourth insert. The third thin-walled portion extends into the product cavity, and the fourth-insert exhaust groove is provided on a side wall of the fourth insert. The fourth insert is detachably provided on the fourth insert.

7. The combined insert injection mold according to claim 6, characterized in that: A fifth insert assembly is also provided in the fixed mold, and the fifth insert assembly includes a fifth insert. The fifth insert is arranged on one side of the first insert and one side of the fourth insert at the same time. The fifth insert is provided with a fourth thin-walled portion and a fifth-insert exhaust groove. The fourth thin-walled portion extends into the product cavity, and the fifth-insert exhaust groove is arranged on a side wall of the fifth insert.

8. The combined insert injection mold according to any one of claims 1 to 4, characterized in that: The fixed mold is also provided with an oblique core pulling assembly, which includes a driving seat and an oblique top, the driving seat is connected to the fixed mold, the first end of the oblique top is slidably connected to the driving seat, the second end of the oblique top is provided with a cylindrical portion and two wing portions, the two wing portions are respectively arranged on both sides of the cylindrical portion, the cylindrical portion and the two wing portions both pass through the first insert and extend obliquely into the product cavity, and when the mold is opened, the driving seat can drive the second end of the oblique top to exit the product cavity.

9. The combined insert injection mold according to any one of claims 1 to 4, characterized in that: A first slide assembly and a second slide assembly are further arranged between the fixed mold and the movable mold, and the first slide assembly and the second slide assembly are respectively arranged on both sides of the first direction of the product cavity; The first slider assembly includes a first inclined rod, a first slider seat and a first slider piece, the first slider seat is arranged on the movable mold, the first end of the first slider piece is connected to the first slider seat, the second end of the first slider piece is arranged with a first slider insert, the second end of the first slider piece and the first slider insert both extend into the product cavity, one end of the first inclined rod is connected to the fixed mold, the other end of the first inclined rod is obliquely inserted into the first slider seat, when the mold is opened, the first inclined rod can drive the first slider seat and the first slider piece to move away from the product cavity along a direction perpendicular to the mold opening; The second slider assembly includes a second oblique rod, a second slider seat and a second slider piece. The second slider seat is arranged on the movable mold. The first end of the second slider piece is connected to the second slider seat. A second slider insert is arranged on the second end of the second slider piece. The second end of the second slider piece and the second slider insert both extend into the product cavity. One end of the second oblique rod is connected to the fixed mold, and the other end of the second oblique rod is obliquely inserted into the second slider seat. When the mold is opened, the second oblique rod can drive the second slider seat and the second slider piece to move away from the product cavity in a direction perpendicular to the mold opening.

10. The combined insert injection mold according to any one of claims 1 to 4, characterized in that: A third slide assembly and a fourth slide assembly are further arranged between the fixed mold and the movable mold, and the third slide assembly and the fourth slide assembly are respectively arranged on both sides of the product cavity in the second direction; The third slider assembly includes a third oblique rod, a third slider seat and a third slider piece, the third slider seat is connected to the movable mold, the first end of the third slider piece is connected to the third slider seat, the second end of the third slider piece is provided with a third slider insert, the second end of the third slider insert and the third slider insert both extend into the product cavity, one end of the third oblique rod is connected to the fixed mold, and the other end of the third oblique rod is obliquely inserted into the third slider seat, and when the mold is opened, the third oblique rod can drive the third slider seat and the third slider piece to move away from the product cavity along a direction perpendicular to the mold opening direction; The fourth slider assembly includes a fourth oblique rod, a fourth slider seat and a fourth slider piece. The fourth slider seat is connected to the movable mold. The first end of the fourth slider piece is connected to the fourth slider seat. The second end of the fourth slider piece is provided with a fourth slider insert and an exhaust insert. The exhaust insert is provided on the fourth slider insert. The second end of the fourth slider piece, the fourth slider insert and the exhaust insert all extend into the product cavity. An annular exhaust groove is provided on the peripheral wall of the exhaust insert. The fourth slider insert is provided with a connecting groove. The fourth slider piece is provided with a strip exhaust groove extending away from the product cavity. The annular exhaust groove is connected with the strip exhaust groove through the connecting groove. One end of the fourth oblique rod is connected to the fixed mold. The other end of the fourth oblique rod is obliquely inserted into the fourth slider seat. When the mold is opened, the fourth oblique rod can drive the fourth slider seat and the fourth slider piece to move away from the product cavity along a direction perpendicular to the mold opening.

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