Injection mold

Abstract

The present invention provides an injection mold, comprising an upper fixed plate, an upper mold plate, an upper mold core, a lower mold plate, a lower mold core and a first core-pulling assembly, wherein a cavity with a semi-enclosed structure is provided between the upper mold core and the lower mold core; the first core-pulling assembly comprises a core-pulling drive device, a first slider, a first slide and a plurality of inserts, wherein the plurality of inserts are all provided on the first slide, the first end of the first slide and the plurality of inserts are all inserted in the middle of the mold cavity, the core-pulling drive device is connected to the first slide via the first slider, the core-pulling drive device can drive the first slide to move in a direction perpendicular to the mold opening direction, a portion of the inserts can move in the moving direction of the first slide, and another portion of the inserts can move in a direction intersecting with the moving direction of the first slide. The present invention sets a special core-pulling assembly in the mold, which can not only produce a shell with a relatively complex structure and a semi-enclosed structure, but also has the advantages of saving mold space and reducing mold volume.

Description

Technical Field

[0001] The invention relates to the field of injection molds, in particular to an injection mold for producing semi-enclosed structure products. Background Art

[0002] The housing of an existing projector generally includes an upper housing and a lower housing, which are separately injection molded and then assembled to form the desired housing. Although the existing housing is easy to produce, the sealing and aesthetics of the housing assembled from the upper and lower housings are reduced.

[0003] In order to improve its sealing and aesthetics, a semi-enclosed shell can be designed, such as Figure 1 and Figure 2 As shown, the housing includes a left wall, a right wall, an upper wall, a lower wall, and a front wall, which form a hollow semi-enclosed structure. The upper wall is provided with an upper protrusion on the outside, and the left and right walls are provided with side protrusions on the inside. The upper wall is provided with two L-shaped baffles and two T-shaped protrusions on the inside. The lower wall is provided with a bottom perforation, two T-shaped protrusions, and multiple strip ribs on the inside. The front wall is provided with two hollow cylinders and two solid cylinders on the inside.

[0004] In order to ensure that the mold can produce the above-mentioned shell with a relatively complex structure, it is necessary to design a reasonable mold to complete product molding. Summary of the Invention

[0005] The object of the present invention is to provide an injection mold capable of producing a shell with a relatively complex structure and a semi-enclosed structure.

[0006] In order to achieve the above-mentioned purpose, the injection mold provided by the present invention includes an upper fixed plate, an upper template, an upper mold core, a lower template, a lower mold core and a first core pulling assembly, and a semi-enclosed cavity is arranged between the upper mold core and the lower mold core; the first core pulling assembly includes a core pulling drive device, a first slider, a first slide and a plurality of inserts, and the plurality of inserts are all arranged on the first slide, and the first end of the first slide and the plurality of inserts are all inserted in the middle of the cavity, and the core pulling drive device is connected to the first slide through the first slider, and the core pulling drive device can drive the first slide to move along the direction perpendicular to the mold opening direction, a part of the inserts can move along the moving direction of the first slide, and the other part of the inserts can move along the direction intersecting with the moving direction of the first slide.

[0007] It can be seen from the above scheme that a semi-enclosed structure cavity is set to form a shell of the semi-enclosed structure, and a first row position and multiple inserts are inserted in the middle of the cavity to form the structure inside the shell. Since multiple inserts are set on the first row position, when opening the mold, it is only necessary to control the movement of the first row position to drive multiple inserts to move in different directions. This is not only simple and convenient to operate, but also saves space to reduce the volume of the mold.

[0008] A further solution is that the insert includes a first insert and two second inserts, the first insert is arranged between the two second inserts, the first insert and the second insert both extend obliquely along the mold opening direction, a first protrusion is provided at one end of the first insert, a second protrusion and a first groove are provided at one end of the second insert, the first protrusion and the second protrusion both protrude in the same direction and are embedded in the mold cavity, and the first groove is connected to the mold cavity; a first insert groove and two second insert grooves are provided at the first end of the first slide, the first insert is arranged in the first insert groove, and the second insert is arranged in the second insert groove, and when the first slide moves along the direction perpendicular to the mold opening, the first protrusion and the second protrusion can both move along the mold opening direction.

[0009] It can be seen from the above scheme that by setting the first insert and the second insert, when the first row moves along the vertical mold opening direction, it can simultaneously drive the first insert and the second insert to move along the mold opening direction, so that the first protrusion and the second protrusion move downward and separate from the product, realizing the demolding effect, which has the advantages of simple and convenient operation.

[0010] A further solution is that the first slider is provided with an upper fixing part, a lower fixing part, a first elastic part and an insert fixing block on the side facing the cavity, the second end of the first slide position is provided between the upper fixing part and the lower fixing part, the second end of the first slide position is obliquely provided with a first slide groove, the first slide groove is connected with the first insert groove and the second insert groove respectively, the insert fixing block is provided in the first slide groove and abuts against the upper fixing part, the insert fixing block is fixedly connected with the first insert and the second insert respectively, the first elastic part elastically abuts between the first slider and the insert fixing block, and when the first slide position moves along the vertical mold opening direction, the insert fixing block can move relatively along the inclined direction of the first slide groove.

[0011] It can be seen from the above scheme that by setting the first elastic member and the upper fixing member to relatively fix the insert fixing block, the insert fixing block is basically stationary in the vertical mold opening direction and only moves in the mold opening direction, thereby driving the first insert and the second insert to move.

[0012] A further solution is that the insert includes two third inserts, which are respectively arranged on the side walls of the first row, and the third insert is provided with a convex portion, which protrudes from the side walls of the first row; the side walls of the first end of the first row are respectively provided with a third insert groove, and the third insert is arranged in the third insert groove. When the mold is opened, the convex portion can be retracted into the side wall of the first row.

[0013] It can be seen from the above solution that by providing the convex strip portion for forming the side protrusion of the shell, when the mold is opened, the convex strip portion is retracted into the first row position, which facilitates demoulding.

[0014] A further solution is that a first connecting block, a first oblique rod, a first moving block and a second moving block are provided on the side of the first slider facing the cavity, the first moving block and the second moving block are both movably arranged in the first row, the first oblique rod is respectively connected to the first connecting block and the first moving block, the first moving block is also connected to the first end of the second moving block, the second end of the second moving block is provided with an oblique slide, the oblique slide extends obliquely along the moving direction of the second moving block toward the middle of the first row, and the third insert is slidably connected to the oblique slide; when the mold is opened, the first connecting block can move along the mold opening direction, and the first connecting block drives the first moving block and the second moving block to move along the perpendicular mold opening direction relative to the first row through the first oblique rod, thereby driving the third insert to move.

[0015] It can be seen from the above scheme that by setting the first inclined rod and the first moving block, when the mold is opened, the upper template drives the first inclined rod to move along the mold opening direction, and then drives the first moving block and the second moving block to move along the vertical mold opening direction, so that the third insert is retracted into the first row position under the action of the inclined slide groove, which is conducive to easy demolding.

[0016] A further solution is that the inserts include two fourth inserts and two fifth inserts, the two fourth inserts are respectively arranged on both sides of the first row, and the two fifth inserts are respectively arranged on both sides of the first row, and the fourth inserts and the fifth inserts both extend along the moving direction of the first row; two fourth insert grooves and two fifth insert grooves are provided at the first end of the first row, the fourth insert is provided in the fourth insert groove, and the fifth insert is provided in the fifth insert groove. When the first row moves along the vertical mold opening direction, the fourth insert and the fifth insert can both move with the first row.

[0017] It can be seen from the above scheme that the fourth insert and the fifth insert both extend along one end of the first row. When the first row moves along the vertical mold opening direction, the fourth insert and the fifth insert both move synchronously in the same direction, which is conducive to easy demoulding.

[0018] A further solution is that the fourth insert is set as a hollow cylinder, and an insert pin is provided inside the fourth insert, the insert pin extends along the moving direction of the first row position, the first end of the insert pin is inserted in the fourth insert, the second end of the insert pin is fixedly connected to the first row position, and an annular groove is formed between the first end of the insert pin and the inner wall of the fourth insert, and the annular groove is connected to the mold cavity.

[0019] As can be seen from the above solution, the inserting pin cooperates with the fourth insert to form the hollow cylinder of the shell.

[0020] A further solution is that the injection mold also includes a second core-pulling mechanism, which includes an upper movable plate, a second elastic member, a fixed block and a rake. The upper movable plate is movably arranged in the upper template and adjacent to the upper fixed plate. The second elastic member elastically abuts between the upper fixed plate and the upper movable plate. The fixed block is fixedly connected to the upper movable plate. The rake extends obliquely along the mold opening direction. The first end of the rake is slidably connected to the fixed block. The second end of the rake passes through the upper template and the upper mold core and extends toward the cavity. The second end of the rake is provided with a third protrusion, which extends along a direction perpendicular to the mold opening and is embedded in the cavity. When the mold is opened, the second elastic member can push the upper movable plate to move away from the upper fixed plate, and the upper movable plate can drive the fixed block to move toward the upper mold core, thereby driving the rake and the third protrusion to move along the direction perpendicular to the mold opening.

[0021] It can be seen from the above scheme that when the mold is opened, while the upper mold plate and the lower mold plate are opened, the upper movable plate moves toward the upper mold core under the action of the second elastic member, thereby driving the oblique side to move downward toward the upper mold core while moving outward, thereby realizing the demolding of the third protrusion and the product.

[0022] A further solution is to provide two bevels, which are arranged in an eight-shaped shape and move in opposite directions; a sixth insert is provided in the upper mold core, which is provided between the two bevels, and one end of the sixth insert is embedded in the mold cavity, and the sixth insert can move along the mold opening direction.

[0023] A further solution is that the injection mold is also provided with three slide assemblies, and the first core pulling assembly and the three slide assemblies are respectively arranged on the four sides of the lower mold core; the slide assembly includes a second slide, a second slider, a second oblique rod and a second connecting block, the second connecting block is fixedly connected to the upper mold plate, the second oblique rod is respectively connected to the second connecting block and the second slider, the second slider is also connected to the second slide, the second connecting block can move along the mold opening direction, and then drive the second slider and the second slide to move along the vertical mold opening direction through the second oblique rod.

[0024] As can be seen from the above scheme, the three slide assemblies are respectively arranged around the cavity for forming the left wall, right wall and front wall of the shell, and the first core pulling assembly is used to form the structure inside the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a housing produced using an embodiment of the present invention from a first perspective.

[0026] Figure 2 This is a structural diagram of a housing produced using an embodiment of the present invention from a second perspective.

[0027] Figure 3 It is a structural diagram of an embodiment of the present invention.

[0028] Figure 4It is a structural diagram after the upper mold is hidden in an embodiment of the present invention.

[0029] Figure 5 It is a structural diagram of the first core-pulling assembly in an embodiment of the present invention.

[0030] Figure 6 It is an exploded view of the first core pulling assembly in an embodiment of the present invention.

[0031] Figure 7 This is a structural diagram of the first row and various inserts in an embodiment of the present invention.

[0032] Figure 8 This is an exploded view of the first row and various inserts in an embodiment of the present invention.

[0033] Figure 9 yes Figure 8 Enlarged view of point A in the middle.

[0034] Figure 10 It is a cross-sectional view of the first insert in an embodiment of the present invention.

[0035] Figure 11 yes Figure 10 Enlarged view of point B in the middle.

[0036] Figure 12 It is a cross-sectional view of the fourth insert in the first core pulling assembly in an embodiment of the present invention.

[0037] Figure 13 yes Figure 12 Enlarged view of point C in the middle.

[0038] Figure 14 It is a cross-sectional view of the second insert and the fifth insert in the first core pulling assembly in an embodiment of the present invention.

[0039] Figure 15 yes Figure 14 Enlarged view of point D in the middle.

[0040] Figure 16 It is a cross-sectional view of the second core pulling assembly in an embodiment of the present invention.

[0041] Figure 17 yes Figure 16 Enlarged view of point E in the middle.

[0042] Figure 18 2 is a structural diagram of the upper mold core in an embodiment of the present invention.

[0043] Figure 19 Schematic diagram of the first row of special-shaped cooling water channels in an embodiment of the present invention.

[0044] The invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0045] See also Figure 1 and Figure 2 The shell 1 obtained by injection molding using this embodiment includes a left wall 11, a right wall 12, an upper wall 13, a lower wall 14, and a front wall 15. The left wall 11, the right wall 12, the upper wall 13, the lower wall 14, and the front wall 15 form a hollow semi-enclosed structure. The upper wall 13 is provided with an upper protrusion 131, a circular groove 132, and four rectangular through-holes 133. The circular groove 132 is used to set the hot runner gate. The upper protrusion 131 is located at the front end of the upper wall 13. The middle part of the upper protrusion 131 is provided with a connecting hole 1311, which is connected to the interior of the shell 1. The four rectangular through-holes 133 are respectively provided on the left and right sides of the upper wall 13, and the circular groove 132 is provided in the middle part of the rear end of the upper wall 13. The inner sides of the left wall 11 and the right wall 12 are both provided with side protrusions 111, and the side protrusion 111 is located at one end near the rear end. The inner side of the upper wall 13 is provided with two L-shaped baffles 134 and two first T-shaped protrusions 135. One L-shaped baffle 134 is positioned between the upper wall 13 and the left wall 11, forming a left groove; the other L-shaped baffle 134 is positioned between the upper wall 13 and the right wall 12, forming a right groove. The two first T-shaped protrusions 135 are positioned between the two L-shaped baffles 134 and spaced a predetermined distance apart. The inner side of the lower wall 14 is provided with a bottom through-hole 141, two second T-shaped protrusions 142, and a plurality of strip-shaped ribs 143. The second T-shaped protrusion 142 is positioned opposite the first T-shaped protrusion 135. The plurality of strip-shaped ribs 143 are arranged between the two second T-shaped protrusions 142. The bottom through-hole 141 is positioned between the two second T-shaped protrusions 142 and at the rear end of the strip-shaped ribs 143. Two hollow cylinders 151 and two solid cylinders 152 are provided on the inner side of the front wall 15 , and the two solid cylinders 152 are both provided between the two hollow cylinders 151 .

[0046] See also Figures 3 to 9 , and combined with Figure 1 and Figure 2 The injection mold of this embodiment includes, from top to bottom, an upper fixed plate 2, an upper mold plate 3, an upper mold core 4, a lower mold core 5, and a lower mold plate 6. A semi-enclosed cavity is provided between the upper mold core 4 and the lower mold core 5. The cavity is used to form the housing 1. The injection mold is provided with a first core pulling assembly 7 on the lower mold plate 6.

[0047] The first core pulling assembly 7 includes a mounting base 71, a core pulling drive device 72, a first slider 73, an upper fixing member 74, a lower fixing member 75, a first slide 8, and a plurality of inserts. The mounting base 71 is disposed on the lower mold plate 6 and is located on one side of the lower mold core 5. The first slider 73 is disposed on the mounting base 71. The upper fixing member 74 and the lower fixing member 75 are stacked on the mounting base 71 and are located on one side of the first slider 73. The second end of the first slide 8 is disposed between the upper fixing member 74 and the lower fixing member 75. The second end of the first slide 8 is fixedly connected to the first slider 73. The plurality of inserts are disposed on the first slide 8. The first end of the first slide 8 and the plurality of inserts are inserted into the middle of the mold cavity, that is, inserted into the interior of the housing 1. The core pulling drive device 72 can be a hydraulic cylinder or a pneumatic cylinder. The core pulling drive device 72 drives the first slide 8 to move relative to the upper fixing member 74 and the lower fixing member 75 via the first slider 73. The movement direction of the first slide 8 is perpendicular to the mold opening direction of the injection mold. When the first row 8 moves, a portion of the inserts can move along the moving direction of the first row 8 , and another portion of the inserts can move along a direction intersecting with the moving direction of the first row 8 .

[0048] Specifically:

[0049] The first end of the first row 8 is provided with a first insert slot 81, two second insert slots 82, two third insert slots 83, two fourth insert slots 84, and two fifth insert slots 85. The first insert slot 81 is located in the center of the first row 8, and the two second insert slots 82 are located on either side of the first insert slot 81. Both the first insert slot 81 and the second insert slot 82 extend obliquely downward in the mold opening direction. Two third inserts 30 are respectively provided on the side walls of the first row 8. The two fourth inlay grooves 84 are respectively arranged on both sides of the first row position 8, and the two fifth inlay grooves 85 are respectively arranged on both sides of the first row position 8, and the fourth inlay groove 84 and the fifth inlay groove 85 are respectively arranged on the adjacent two sides of the second inlay groove 82, that is, the fourth inlay groove 84 is arranged between the first inlay groove 81 and the second inlay groove 82, and the fifth inlay groove 85 is arranged above the second inlay groove 82, and the second inlay groove 82 is respectively connected with the fourth inlay groove 84 and the fifth inlay groove 85, and the fourth inlay groove 84 and the fifth inlay groove 85 both extend along the moving direction of the first row position 8.

[0050] The first end of the first row 8 also defines two blind holes 86, four T-slots 87, and multiple concave-convex grooves. The blind holes 86 are recessed inward from the end surface of the first row 8 and are located on one side of the fourth insert slot 84. Four T-slots 87 are provided on the upper and lower sides of the first row 8, with two T-slots 87 on the upper and lower sides of the blind holes 86. The blind holes 86 are used to form the solid cylinder 152 of the housing 1, while the T-slots 87 are used to form the first T-shaped protrusion 135 and the second T-shaped protrusion 142 of the housing 1. Multiple concave-convex grooves are provided on the bottom surface of the first row 8. These grooves cooperate with the lower die core 5 to form the strip ribs 143 of the housing 1.

[0051] The first row 8 of this embodiment is made by 3D printing technology, and a special-shaped cooling water channel 89 is provided inside the first row 8 (see Figure 19 ), the water inlet and outlet ends of the special-shaped cooling water channel 89 are both arranged at the second end of the first row 8, the middle part of the special-shaped cooling water channel 89 is circuitously arranged in the first end of the first row 8, and the special-shaped cooling water channel 89 is not connected to each insert groove.

[0052] The inserts of this embodiment include a first insert 10, two second inserts 20, two third inserts 30, two fourth inserts 40, and two fifth inserts 50. The first insert 10 is disposed in the first insert groove 81 and extends obliquely along the mold opening direction. One end of the first insert 10 is provided with a first protruding portion 101 that protrudes upward. The first protruding portion 101 is embedded in the mold cavity, that is, embedded in the inner side of the upper wall 13 of the housing 1. The second insert 20 is disposed within the second insert groove 82 and extends obliquely in the mold opening direction. A second protrusion 201 and a first groove 202 are provided at one end of the second insert 20. The first groove 202 is located to one side of the second protrusion 201. The second protrusion 201 and the first protrusion 101 both protrude in the same direction. The second protrusion 201 is located at the connection between the second insert groove 82 and the fifth insert groove 85 and is embedded in the mold cavity. The second protrusion 201 abuts against the fifth insert 50. The first groove 202 is located to one side of the fifth insert 50 and is connected to the mold cavity, thereby forming the L-shaped baffle 134 of the housing 1. The third insert 30 is disposed within the third insert groove 83 and is provided with a protrusion 301 that engages the mold cavity. The fourth insert 40 is disposed within the fourth insert slot 84. The fourth insert 40 is configured as a hollow cylinder. An insert pin 60 is disposed within the fourth insert 40. Both the insert pin 60 and the fourth insert 40 extend in the direction of movement of the first row 8. The first end of the insert pin 60 is inserted into the fourth insert 40, and the second end of the insert pin 60 is fixedly connected to the first row 8. An annular groove 401 is formed between the first end of the insert pin 60 and the inner wall of the fourth insert 40. The annular groove 401 is located on the end surface of the first row 8 and communicates with the mold cavity, thereby forming the hollow cylinder 151 of the housing 1. The fifth insert 50 is disposed within the fifth insert slot 85. The fifth insert 50 extends in the direction of movement of the first row 8. A second groove portion 501 is formed between the bottom wall of the fifth insert 50 and the bottom of the fifth insert slot 85. The second groove portion 501 is located on one side of the second protrusion 201 and communicates with the mold cavity.

[0053] The fourth insert 40, the insert pin 60, and the fifth insert 50 are fixedly connected to the first row 8, and the fourth insert 40, the insert pin 60, and the fifth insert 50 all extend along the movement direction of the first row 8. When the first row 8 moves, the fourth insert 40, the insert pin 60, and the fifth insert 50 can all move synchronously with the first row 8 in the same direction.

[0054] The surface of the first insert 10 and the surface of the fifth insert 50 are basically flush with the surface of the first row position 8, and are used to form the inner wall of the upper wall 13 of the shell 1. The first protrusion 101 cooperates with the first through hole 441 on the upper mold core 4 to form the connecting hole 1311 of the shell 1; the side walls on both sides of the first row position 8 are used to form the inner wall of the left wall 11 and the inner wall of the right wall 12 of the shell 1, and the third insert 30 is used to form the side protrusion 111 of the shell 1; the second insert 20 and the fifth insert 50 cooperate to form the L-shaped baffle 134 of the shell 1; the third insert 30 cooperates with the insert pin 60 to form the hollow cylinder 151 of the shell 1.

[0055] Combine Figures 10 to 15 , the side of the first slider 73 facing the cavity is provided with an upper fixing part 74, a lower fixing part 75, a first elastic part 76 and an insert fixing block 77, the second end of the first row position 8 is provided between the upper fixing part 74 and the lower fixing part 75, and the second end of the first row position 8 is provided with a first slide groove 88 inclined downward, the first slide groove 88 is respectively connected to the first insert groove 81 and the second insert groove 82, the insert fixing block 77 is arranged in the first slide groove 88 and abuts against the upper fixing part 74, the insert fixing block 77 can move back and forth relative to the bottom of the first slide groove 88, the insert fixing block 77 is respectively fixedly connected to the end of the first insert 10 and the end of the second insert 20, and the first elastic part 76 elastically abuts between the first slider 73 and the insert fixing block 77.

[0056] Before opening the mold, the core-pulling drive device 72 first drives the first row 8 to move away from the cavity. At this time, under the blocking action of the first elastic member 76 and the upper fixing member 74, the position of the insert fixing block 77 in the vertical mold opening direction remains unchanged, and the insert fixing block 77 can only move relative to the bottom of the first slide groove 88, that is, the insert fixing block 77 moves downward along the mold opening direction; at this time, the first insert 10 and the second insert 20 can both move along the mold opening direction, specifically: the first insert 10 moves downward along the inclined direction of the first insert groove 81, so that the first protrusion 101 moves downward and separates from the shell 1, and at the same time the second insert 20 moves downward along the inclined direction of the second insert groove 82, so that the second protrusion 201 moves downward and separates from the shell 1.

[0057] Combine Figure 3 、 Figure 8 and Figure 9 The third insert 30 is disposed in the third insert groove 83 , and the third insert 30 can extend out of or retract into the side wall of the first row 8 . Specifically:

[0058] The first slider 73 is provided with a first connecting block 78, a first oblique rod 79, a first movable block 80 and a second movable block 70 on the side facing the mold cavity. The first connecting block 78 is fixedly connected to the upper mold plate 3 by bolts, so that the first connecting block 78 can move along the mold opening direction. The first oblique rod 79 obliquely penetrates the first connecting block 78 along the mold opening direction and is inserted into the first movable block 80. The first movable block 80 and the second movable block 70 are both movably arranged in the first row 8. The first oblique rod 79 can drive the first movable block 80 to move along the vertical mold opening direction, that is, to move a small distance in the direction of the first slider 73. The second movable block 70 extends toward the mold cavity. The first end of the second movable block 70 is connected to the first movable block 80. The second end of the second movable block 70 is provided with an oblique chute 701. The oblique chute 701 extends obliquely toward the middle of the first row 8 along the moving direction of the second movable block 70. The cross section of the oblique chute 701 is set to be "C" shaped. A connecting protrusion 302 is provided on the side of the third insert 30 facing away from the ridge 301. The connecting protrusion 302 is slidably connected to the inclined groove 701. When the first movable block 80 drives the second movable block 70 to move, the third insert 30 moves toward the center of the first row 8, causing the ridge 301 to retract into the first row 8, facilitating demolding.

[0059] See also Figure 1 、 Figure 5 、 Figure 6 、 Figure 16 and Figure 17 The injection mold of this embodiment also includes a second core-pulling mechanism 9, which includes an upper movable plate 90, a second elastic member 91, two fixed blocks 92 and two bevels 93. A avoidance cavity is provided on the upper part of the upper template 3, and the upper movable plate 90 is movably arranged in the avoidance cavity through a connecting rod. The second elastic member 91 elastically abuts between the upper fixed plate 2 and the upper movable plate 90. In the mold closing state, the upper movable plate 90 is adjacent to the upper fixed plate 2. When the mold is opened, the upper movable plate 90 can move downward under the action of the second elastic member 91. The two fixed blocks 92 are both fixedly connected to the upper movable plate 90 and are located above the upper mold core 4. The bevels 93 are arranged in a one-to-one correspondence with the fixed blocks 92. The fixed block 92 is provided with a second slide groove 921, and the second slide groove 921 extends along the vertical mold opening direction. The oblique square 93 extends obliquely along the mold opening direction, and the two oblique squares 93 are arranged in an "eight" shape. The first end of the oblique square 93 is slidably connected to the fixed block 92, and the second end of the oblique square 93 extends through the upper mold plate 3 and the upper mold core 4 into the mold cavity. The second end of the oblique square 93 is provided with two third protrusions 931. The third protrusions 931 extend perpendicular to the mold opening direction. The two third protrusions 931 are stacked and arranged at a predetermined distance in the mold opening direction. Both third protrusions 931 are embedded in the mold cavity.

[0060] When the mold is opened, the upper movable plate 90, under the action of the second elastic member 91, drives the fixed block 92 to move away from the upper fixed plate 2. The upper movable plate 90 drives the fixed block 92 to move toward the upper mold core 4, and then drives the bevel 93 and the third protrusion 931 thereon to move along the vertical mold opening direction. At this time, the two bevels 93 move outward in opposite directions, so that the third protrusion 931 is separated from the shell 1, which facilitates demolding.

[0061] A sixth insert 41 is provided in the upper mold core 4. The sixth insert 41 is provided between the two oblique squares 93. The sixth insert 41 extends along the mold opening direction. One end of the sixth insert 41 is embedded in the mold cavity. When the mold is opened, the upper mold core 4 drives the sixth insert 41 to move synchronously along the mold opening direction to facilitate demolding.

[0062] Combine Figure 5 and Figure 6 , and combined with Figure 3 The injection mold is also provided with three slide assemblies 100. The first core pulling assembly 7 and the three slide assemblies 100 are respectively arranged around the lower mold core 5. The structural principles of each slide assembly 100 are basically the same. Here, one of the slide assemblies 100 is taken as an example for explanation. The slide assembly 100 includes a second slide 1001, a second slider 1002, a second oblique rod 1003 and a second connecting block 1004. The second slide 1001 is arranged on one side of the cavity. The second connecting block 1004 is fixedly connected to the upper mold plate 3. The second oblique rod 1003 is arranged obliquely along the mold opening direction. The second oblique rod 1003 is respectively connected to the second connecting block 1004 and the second slider 1002. The second slider 1002 is also connected to the second slide 1001. When the mold is opened, the upper template 3 drives the second connecting block 1004 and the second oblique rod 1003 to move up in the mold opening direction, and the second oblique rod 1003 drives the second slider 1002 and the second slide 1001 to move in the direction perpendicular to the mold opening to facilitate demoulding.

[0063] See also Figure 18 , and combined with Figure 1 and Figure 2, a glue inlet 42, four rectangular protrusions 43 and an arc-shaped groove 44 are provided on the bottom wall of the upper mold core 4. The glue inlet 42 is respectively connected to the glue inlet flow channel on the cavity and the upper fixed plate 2. The glue inlet 42 is located in the middle of the upper mold core 4, so that the molten glue can evenly fill the entire cavity. A circular protrusion 45 is provided on the periphery of the glue inlet 42, and the circular protrusion 45 is used to form the circular groove 132 of the shell 1. The four rectangular protrusions 43 are grouped in pairs, and the two groups of rectangular protrusions 43 are respectively provided on both sides of the glue inlet 42. The rectangular protrusions 43 are correspondingly provided on the fifth insert 50 and embedded in the cavity for forming the rectangular through-hole 133 of the shell 1. The arc-shaped groove 44 is provided corresponding to the first protrusion 101, and the arc-shaped groove 44 is used to form the upper protrusion 131 of the shell 1. A first through hole 441 is provided in the middle of the arc-shaped groove 44, which cooperates with the sixth insert 41 to form the connecting hole 1311 in the protrusion 131 on the housing 1. An accommodating cavity 442 is provided at both ends of the arc-shaped groove 44 to accommodate the bevel 93 and facilitate demolding of the bevel 93.

[0064] In summary, the invention sets a cavity with a semi-enclosed structure to form a shell with a semi-enclosed structure, and sets a first row and multiple inserts to be inserted in the middle of the cavity to form the structure inside the shell. Since multiple inserts are set on the first row, when opening the mold, it is only necessary to control the movement of the first row to drive multiple inserts to move in different directions. This is not only simple and convenient to operate, but also saves space to reduce the volume of the mold.

[0065] Finally, it should be emphasized that the above are only preferred embodiments of the invention and are not intended to limit the invention. For those skilled in the art, the invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the scope of protection of the invention.

Claims

1. Injection mold, characterized by , including: an upper fixed plate, an upper mold core, a lower mold core, a lower mold core and a first core-pulling assembly, a cavity with a semi-enclosed structure is provided between the upper mold core and the lower mold core; The first core pulling assembly includes a core pulling drive device, a first slider, a first slide and a plurality of inserts, wherein the plurality of inserts are arranged on the first slide, the first end of the first slide and the plurality of inserts are inserted in the middle of the cavity, the core pulling drive device is connected to the first slide through the first slider, the core pulling drive device can drive the first slide to move along the direction perpendicular to the mold opening direction, a part of the inserts can move along the moving direction of the first slide, and another part of the inserts can move in a direction intersecting with the moving direction of the first slide; The insert includes a first insert and two second inserts, the first insert is arranged between the two second inserts, the first insert and the second insert both extend obliquely along the mold opening direction, a first protrusion is provided at one end of the first insert, a second protrusion and a first groove are provided at one end of the second insert, the first protrusion and the second protrusion both protrude in the same direction and are embedded in the mold cavity, and the first groove is communicated with the mold cavity; The first end of the first slide is provided with a first insert groove and two second insert grooves, the first insert is arranged in the first insert groove, and the second insert is arranged in the second insert groove. When the first slide moves along the vertical mold opening direction, the first protrusion and the second protrusion can move along the mold opening direction; The inserts include two third inserts, which are respectively arranged on the side walls of both sides of the first row, and the third inserts are provided with convex parts, which protrude from the side walls of the first row; The side walls on both sides of the first end of the first row are respectively provided with third insert grooves, the third insert is arranged in the third insert grooves, and when the mold is opened, the convex strip can be retracted into the side walls of the first row.

2. The injection mold according to claim 1, characterized in that: The first slide is provided with an upper fixing member, a lower fixing member, a first elastic member and an insert fixing block on the side facing the cavity, the second end of the first slide is provided between the upper fixing member and the lower fixing member, the second end of the first slide is obliquely provided with a first slide groove, the first slide groove is connected with the first insert groove and the second insert groove respectively, the insert fixing block is provided in the first slide groove and abuts against the upper fixing member, the insert fixing block is fixedly connected with the first insert and the second insert respectively, the first elastic member elastically abuts between the first slide and the insert fixing block, and when the first slide moves along the vertical mold opening direction, the insert fixing block can move relatively along the inclined direction of the first slide groove.

3. The injection mold according to claim 1, wherein: A first connecting block, a first oblique rod, a first moving block and a second moving block are provided on a side of the first slider facing the mold cavity. The first moving block and the second moving block are both movably arranged in the first slide. The first oblique rod is connected to the first connecting block and the first moving block respectively. The first moving block is also connected to the first end of the second moving block. An oblique sliding groove is provided at the second end of the second moving block. The oblique sliding groove extends obliquely toward the middle of the first slide along the moving direction of the second moving block. The third insert is slidably connected to the oblique sliding groove. When the mold is opened, the first connecting block can move along the mold opening direction. The first connecting block drives the first moving block and the second moving block to move along the vertical mold opening direction relative to the first slide position through the first oblique rod, thereby driving the third insert to move.

4. The injection mold according to claim 1, wherein: The inserts include two fourth inserts and two fifth inserts, the two fourth inserts are respectively arranged on both sides of the first row, and the two fifth inserts are respectively arranged on both sides of the first row, and the fourth inserts and the fifth inserts both extend along the moving direction of the first row; The first end of the first row is provided with two fourth insert grooves and two fifth insert grooves, the fourth insert is arranged in the fourth insert groove, and the fifth insert is arranged in the fifth insert groove. When the first row moves along the vertical mold opening direction, the fourth insert and the fifth insert can follow the movement of the first row.

5. The injection mold according to claim 4, characterized in that: The fourth insert is configured as a hollow cylinder, and an insert pin is provided inside the fourth insert. The insert pin extends along the moving direction of the first slide position. The first end of the insert pin is inserted into the fourth insert, and the second end of the insert pin is fixedly connected to the first slide position. An annular groove is formed between the first end of the insert pin and the inner wall of the fourth insert, and the annular groove is connected to the mold cavity.

6. The injection mold according to claim 1, characterized in that: The injection mold further includes a second core-pulling mechanism, the second core-pulling mechanism including an upper movable plate, a second elastic member, a fixed block and an oblique square, the upper movable plate being movably arranged in the upper template and adjacent to the upper fixed plate, the second elastic member elastically abutting between the upper fixed plate and the upper movable plate, the fixed block being fixedly connected to the upper movable plate, the oblique square extending obliquely along the mold opening direction, the first end of the oblique square being slidably connected to the fixed block, the second end of the oblique square passing through the upper template and the upper mold core extending toward the mold cavity, the second end of the oblique square being provided with a third protrusion, the third protrusion extending along the perpendicular mold opening direction and embedded in the mold cavity; When the mold is opened, the second elastic member can push the upper movable plate to move away from the upper fixed plate, and the upper movable plate can drive the fixed block to move toward the upper mold core, thereby driving the oblique side and the third protrusion to move along the direction perpendicular to the mold opening.

7. The injection mold according to claim 6, characterized in that: The number of the oblique squares is set to be two, the two oblique squares are arranged in an eight-shaped shape, and the two oblique squares can move in opposite directions; A sixth insert is provided in the upper mold core, and the sixth insert is provided between the two oblique squares. The sixth insert extends along the mold opening direction, and one end of the sixth insert is embedded in the mold cavity. When the mold is opened, the upper mold core can drive the sixth insert to move along the mold opening direction.

8. The injection mold according to claim 1, wherein: The injection mold is further provided with three slide assemblies, and the first core pulling assembly and the three slide assemblies are respectively arranged around the lower mold core; The slide assembly includes a second slide, a second slider, a second oblique rod and a second connecting block. The second connecting block is fixedly connected to the upper template. The second oblique rod is respectively connected to the second connecting block and the second slider. The second slider is also connected to the second slide. When the mold is opened, the upper template drives the second connecting block to move along the mold opening direction, and then drives the second slider and the second slide to move along the direction perpendicular to the mold opening through the second oblique rod.

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