Injection mold for integrated plug

Abstract

The present invention discloses an injection mold of an integrated plug in the field of injection mold technology, comprising an ejector plate, an ejector, a first sleeve, a second sleeve, a push rod, a first elastic rubber pad, a second elastic rubber pad, and a panel, a runner plate, a front template, a rear template, a square iron block and a bottom plate arranged in sequence from top to bottom; the front template is fixed with a front mold core, the rear template is fixed with a rear mold core, the front mold core and the rear mold core are arranged opposite to each other and form a cavity; the second sleeve is sleeved on the outside of the first sleeve, the push rod is sleeved in the first sleeve, the bottom end of the second sleeve abuts against the second elastic rubber pad, and the bottom end of the first sleeve abuts against the first elastic rubber pad; a protrusion is provided on the upper periphery of the second sleeve. During injection molding, the rebound force of the first elastic rubber pad and the second elastic rubber pad causes the protrusions of the first sleeve and the second sleeve to be pressed upwards against the corresponding positions of the metal parts, so that the injection molding colloid will not block and cover the corresponding end faces of the metal parts, thereby ensuring the injection molding quality of the product and improving the yield of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to an injection mold for an integrated plug. Background Art

[0002] There are many forms of plug shells, especially for existing new energy vehicles, the plugs are in various forms, and many of them are not of uniform shape and specifications. Fig.10 The one-piece plug shown is obtained by combining a metal part with a plastic part. During injection molding, the metal part is placed in an injection mold, and then injection molding is performed so that the metal part and the injection molded part form an integrated structure. However, the metal part of the plug itself is assembled from two structures. Therefore, there is a certain deviation when the metal part is assembled. Therefore, during injection molding, when the gap between the metal part and the corresponding insert is too large, the colloid can easily enter from the gap during the injection molding process, thereby covering the surface of the metal that should not be covered with plastic, thereby forming a defective product with a high defective rate, and a large amount of manual inspection of defective products is required in the later stage, which wastes labor and material costs, thereby increasing production costs. Summary of the invention

[0003] An object of the present invention is to provide an injection mold for an integrated plug that can solve at least one of the above problems.

[0004] According to one aspect of the present invention, an injection mold for an integrated plug is provided, comprising an ejector plate, an ejector, a first sleeve, a second sleeve, a push rod, a first elastic rubber pad, a second elastic rubber pad, and a panel, a runner plate, a front template, a rear template, a square iron block and a bottom plate arranged in sequence from top to bottom;

[0005] A front mold core is fixed below the front mold plate, and a rear mold core is fixed above the rear mold plate. The front mold core and the rear mold core are arranged opposite to each other to form a cavity.

[0006] The ejector plate is arranged inside the square iron block, one end of the ejector is fixed on the ejector plate, and the other end can penetrate the rear mold plate and the rear mold core and then extend into the mold cavity;

[0007] The second sleeve is sleeved on the outside of the first sleeve, the top ends of the first sleeve and the second sleeve are both extended into the cavity, the first elastic rubber pad and the second elastic rubber pad are both arranged on the bottom plate, the push rod is sleeved in the first sleeve, and the top of the first sleeve is connected with the cavity;

[0008] The bottom end of the second sleeve is in contact with the upper end surface of the second elastic rubber pad, and the bottom end of the first sleeve is in contact with the upper end surface of the first elastic rubber pad;

[0009] A protrusion is arranged on the upper outer periphery of the second sleeve.

[0010] In some embodiments, a plurality of front mold inserts are fixed on the front mold core, namely a first front mold insert, a second front mold insert, a third front mold insert and a fourth front mold insert, the top end of the first front mold insert is fixed on the front mold core, and the bottom end extends into the mold cavity, there are two second front mold inserts, which are respectively located on both sides of the first front mold insert, the top end of the second front mold insert is fixed on the front mold core, and the bottom end extends into the mold cavity, the top end of the third front mold insert is fixed on the front mold core, and a semicircular threaded hole is provided at the bottom end, and is connected to the mold cavity, the top end of the fourth front mold insert is fixed on the front mold core, the fourth front mold insert is located on the outside of the third front mold insert, and a semicircular through hole is provided at the bottom end of the fourth front mold insert, and the inner diameter of the through hole is smaller than the inner diameter of the threaded hole at the bottom end of the third front mold insert.

[0011] In some embodiments, a plurality of rear mold inserts are provided on the rear mold core, namely a first rear mold insert, a second rear mold insert, a third rear mold insert and a fourth rear mold insert, the bottom end of each rear mold insert is fixed on the rear mold core, the upper part of the second sleeve is sleeved in the first rear mold insert, the second rear mold insert is located on the outer side of the first rear mold insert, the top end of the third rear mold insert is provided with a semicircular threaded hole, and it abuts against the bottom end of the third front mold insert, the top end of the fourth rear mold insert is provided with a semicircular through hole, and it abuts against the bottom end of the fourth front mold insert.

[0012] In some embodiments, the injection mold of the integrated plug also includes a support member and a limit rod. The support member is T-shaped, and the small end of the support member can be inserted between the third front mold insert and the third rear mold insert. The large end of the support member is located on the outside of the fourth rear mold insert. The bottom end of the limit rod is fixed on the ejector plate, and the top end can abut against the bottom end of the large end of the support member.

[0013] In some embodiments, the injection mold of the integrated plug also includes a third sleeve, which is sleeved on the outside of the second sleeve, the bottom end of the third sleeve is fixed on the ejector plate, the top end extends into the cavity, and is located below the protrusion of the second sleeve, the third sleeve is sleeved in the first rear mold insert, and is tightly attached to the inner wall of the first rear mold insert, the outer periphery of the second sleeve is provided with a chamfer, the chamfer is located below the protrusion, and the top end of the third sleeve is flush with the bottom end of the chamfer.

[0014] In some embodiments, the injection mold of the integrated plug further includes a first slider assembly and a second slider assembly, the first slider assembly and the second slider assembly are respectively disposed on opposite sides of the cavity, and the first slider assembly and the second slider assembly have the same structure.

[0015] In some embodiments, the first slider assembly includes a slider, a side insert, an inclined guide rod, a moving block, a guide block and a compression spring. The slider cooperates with the cavity and is fixed to the moving block. One end of the side insert is fixed on the moving block, and the other end can extend into the first rear mold insert. One end of the inclined guide rod is fixed on the front mold plate, and the other end can penetrate the moving block. The guide block is located on the outside of the moving block. A first inclined surface is provided on the inner side of the guide block, and a second inclined surface is provided on the outer side of the moving block. The first inclined surface can be tightly matched with the second inclined surface. One end of the compression spring abuts against the moving block, and the other end abuts against the rear mold core.

[0016] In some embodiments, the injection mold of the integrated plug also includes a first mounting block and a second mounting block, the first mounting block is fixed to the bottom of the base plate, a first mounting groove is provided on the first mounting block, a first elastic rubber pad is placed in the first mounting groove, a first gasket is provided between the first sleeve and the first elastic rubber pad, the push rod is also located above the first gasket, the second mounting block is fixed above the base plate, a second mounting groove is provided below the second mounting block, and the second elastic rubber pad is located in the second mounting groove.

[0017] In some embodiments, a first exhaust portion and a second exhaust portion are provided at the top of the push rod, the first exhaust portion is located above the second exhaust portion, a matching hole is provided in the first sleeve, the matching hole is communicated with the cavity, the push rod is matched with the matching hole, and the top of the push rod is flush with the top of the first exhaust portion, the outer diameter of the first exhaust portion is 0.02 mm smaller than the inner diameter of the matching hole, and the outer diameter of the second exhaust portion is 0.04 mm smaller than the inner diameter of the matching hole.

[0018] In some embodiments, the injection mold of the integrated plug also includes a return spring and a mounting rod, one end of the mounting rod is fixed to the ejector plate, and the other end can pass through the rear template, the return spring is sleeved on the mounting rod, one end of the return spring abuts against the ejector plate, and the other end abuts against the rear template.

[0019] The beneficial effects of the present invention are:

[0020] 1. By providing a first elastic rubber pad, when the metal part is placed in the mold cavity, the first elastic rubber pad can push the first sleeve upward under the action of the rebound force, so that the top of the first sleeve can be pressed upward on the inner end face of the vertical inner hole of the metal part. Therefore, during injection molding, the colloid entering the top of the first sleeve will not enter between the first sleeve and the vertical hole of the metal part, that is, the injection molding colloid is prevented from blocking and covering the corresponding end face of the metal part, thereby ensuring the injection molding quality of the product and improving the product yield. The first elastic rubber pad can compensate for the error caused by the assembly of the corresponding position of the metal part;

[0021] 2. By providing a second elastic rubber pad and a protrusion on the upper periphery of the second sleeve, the second sleeve can be pushed upward by the rebound force of the second elastic rubber pad, and the protrusion can be pressed against the lower edge of the metal part, thereby preventing the colloid from flowing into the gap between the metal part and the second sleeve during injection molding, meeting the molding requirements of the product, ensuring the final injection molding quality of the product, and thus helping to reduce the production cost of the product;

[0022] 3. Through the cooperation of multiple front mold inserts and multiple rear mold inserts with the cavity, the product shape can be easily formed. At the same time, it is convenient for the demoulding of the product. There is no need to perform complex processing on a single insert, which reduces the difficulty of mold production as a whole;

[0023] 4. By providing a support, the hollow position of the metal part can be prevented from being squeezed and deformed during molding, and the corresponding position can be prevented from being filled with the injection colloid; the limiter can ensure the horizontality of the support and prevent the support from tilting, thereby ensuring the verticality of the support and the cavity, and ensuring the molding accuracy of the product;

[0024] 5. By providing a third sleeve, the molding requirements of the corresponding position of the product can be met. At the same time, the product can be ejected upward during demoulding, and it also acts as an ejector, which is conducive to simplifying the structure of the entire mold;

[0025] 6. By providing the first mounting block and the second mounting block, the installation of the corresponding elastic rubber pad can be facilitated;

[0026] 7. By providing the first exhaust portion and the second exhaust portion at the top of the push rod, the air in the cavity can be easily discharged during injection molding. The trace gas in the injection molded part can be discharged into the second exhaust portion through the first exhaust portion and then discharged, which can effectively avoid the formation of bubbles in the injection molded part and ensure the molding quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the injection mold of the integrated plug of the present invention in a mold closing state;

[0028] Figure 2 It is a schematic diagram of the top view of the injection mold of the integrated plug of the present invention;

[0029] Figure 3 yes Figure 2 AA cross-sectional structure diagram;

[0030] Figure 4 It is a structural schematic diagram of the injection mold part structure of the integrated plug of the present invention;

[0031] Figure 5 yes Figure 4 Schematic diagram of the top view structure.

[0032] Figure 6 yes Figure 5 Schematic diagram of the BB cross-section structure.

[0033] Figure 7 yes Figure 5 Schematic diagram of the CC cross-section structure.

[0034] Figure 8 It is a schematic structural diagram of the matching of a support member and a limiting rod in an injection mold of an integrated plug of the present invention.

[0035] Fig. 9 It is a schematic cross-sectional structural diagram of the matching of the sleeve and the corresponding elastic rubber pad in the injection mold of the integrated plug of the present invention.

[0036] Fig.10 It is a structural schematic diagram of a product obtained by injection molding the injection mold of the integrated plug of the present invention.

[0037] Fig.11 yes Fig.10 Schematic diagram of the cross-sectional structure.

[0038] Fig.12 It is a schematic diagram of the structure of the metal parts in the integrated plug. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] Reference Figure 1 to Figure 7 and Fig. 9 The injection mold of the integrated plug includes an ejector plate 1, an ejector 2, a first sleeve 3, a second sleeve 4, a push rod 5, a first elastic rubber pad 6, a second elastic rubber pad 7, and a panel 8, a flow channel plate 9, a front mold plate 10, a rear mold plate 11, a square iron block 12 and a bottom plate 13 arranged in sequence from top to bottom;

[0041] A front mold core 14 is fixed below the front mold plate 10, and a rear mold core 15 is fixed above the rear mold plate 11. The front mold core 14 and the rear mold core 15 are arranged opposite to each other and form a mold cavity 16.

[0042] The ejector plate 1 is arranged inside the square iron block 12, one end of the ejector 2 is fixed on the ejector plate 1, and the other end can penetrate the rear mold plate 11 and the rear mold core 15 and then extend into the mold cavity 16;

[0043] The second sleeve 4 is sleeved on the outside of the first sleeve 3, the top ends of the first sleeve 3 and the second sleeve 4 are both extended into the cavity 16, the first elastic rubber pad 6 and the second elastic rubber pad 7 are both arranged on the bottom plate 13, the push rod 5 is sleeved in the first sleeve 3, and the top of the first sleeve 3 is connected with the cavity 16;

[0044] The bottom end of the second sleeve 4 abuts against the upper end surface of the second elastic rubber pad 7, and the bottom end of the first sleeve 3 abuts against the upper end surface of the first elastic rubber pad 6;

[0045] A protrusion 41 is formed on the upper outer periphery of the second sleeve 4 .

[0046] In order to facilitate the description of the positional relationship when the metal parts in the sleeve and the plug are matched, the structure of the metal parts is now described. The metal part 100 (such as Figures 10-12 The mold (shown in FIG. 1 ) includes a vertical cylinder 101, a horizontal cylinder 102, a top cover 103 and an inner cylinder 104, wherein the vertical cylinder 101 is placed vertically on the mold, and the horizontal cylinder 102 is placed horizontally on the mold, and the vertical cylinder 101 and the horizontal cylinder 102 are an integrally formed structure; the inner cylinder 104 is sleeved in the vertical cylinder 101; the longitudinal section of the top cover 103 is T-shaped, the small end of the top cover 103 extends into the inner cylinder 104, and the large end of the top cover 103 is located outside the vertical cylinder 101 and is tightly abutted against the upper end surface of the vertical cylinder 101. A through hole and an open slot are provided in the middle of the top cover 103, the open slot opens downward, the through hole passes through the open slot, and the through hole is connected with the cavity and the top of the first cylinder 3.

[0047] When the metal part 100 is assembled, a certain error is allowed during the production and matching of the top cover 103 and the vertical cylinder 101. However, the size of the injection mold is fixed, and after injection molding, the inner wall of the vertical cylinder and the inner wall of the inner cylinder of the metal part cannot be covered with plastic. Therefore, the requirements for the injection mold are very high.

[0048] When the injection mold of the integrated plug of the present invention is closed, the metal part 100 is first placed in the mold cavity 16, and then the front template 10 and the rear template 11 are closed and pressed. At this time, under the action of the first elastic rubber pad 6, the first sleeve 3 can be pressed upward to the bottom of the opening groove below the top cover 103, avoiding the gap between the bottom of the opening groove and the top of the first sleeve 3, thereby effectively avoiding the injection molding colloid from entering through the gap between the two, ensuring that the bottom of the opening groove of the top cover 103 will not cover the plastic colloid, and meeting the use requirements of the product. Similarly, under the action of the second elastic rubber pad 7, the second sleeve 4 can be pushed upward, and the protrusion 41 on the outside of the second sleeve 4 is pressed against the edge of the bottom end of the vertical cylinder 101, so that the injection molding colloid enters the metal part through the gap between the second sleeve 4 and the vertical cylinder 101 during injection molding, ensuring the injection molding quality of the product.

[0049] In actual use, in order to ensure the rebound performance of the first elastic rubber pad 6 and the second elastic rubber pad 7, the first elastic rubber pad 6 and the second elastic rubber pad 7 are always in a compressed state, so that the first sleeve 3 and the second sleeve 4 can be pushed upward. At the same time, in order to ensure that the two first elastic rubber pads 6 and the second elastic rubber pads 7 have elasticity and sufficient strength and support force, both are made of polyurethane (PU), which is the full name of polyurethane, PU70, and Shore hardness 70 degrees, to meet the corresponding use requirements.

[0050] The injection mold of the integrated plug of the present invention also includes a first mounting block 30 and a second mounting block 31. The first mounting block 30 is fixed at the bottom of the base plate 13. A first mounting groove 301 is provided on the first mounting block 30. The first elastic rubber pad 6 is placed in the first mounting groove 301. A first gasket 32 ​​is provided between the first sleeve 3 and the first elastic rubber pad 6. The push rod 5 is also located above the first gasket 32. The second mounting block 31 is fixed above the base plate 13. A second mounting groove 311 is opened below the second mounting block 31. The second elastic rubber pad 7 is located in the second mounting groove 311.

[0051] The first mounting block 30 is fixed to the bottom of the bottom plate 13 by screws, and the first gasket 32 ​​is placed above the first elastic rubber pad 6. The outer diameter of the first gasket 32 ​​is larger than the first elastic rubber pad 6, so the action area of ​​the first elastic rubber pad 6 on the bottom end of the first sleeve 3 can be increased. The upper end surface of the first gasket 32 ​​is higher than the upper end surface of the first mounting block 30, so that the first elastic rubber pad 6 can act on the first sleeve 3.

[0052] The second mounting block 31 is fixed to the upper end surface of the bottom plate 13 by screws, and the bottom end of the second sleeve 4 is provided with a U-shaped groove opening downward, and the second sleeve 4 is located in the second mounting groove 311, and the second sleeve 4 can be installed and limited by the second mounting groove 311. The second elastic rubber pad 7 is limited by the bottom plate 13 and the U-shaped groove, and the top of the second elastic rubber pad 7 is close to the bottom of the U-shaped groove of the second sleeve 4, so that the second elastic rubber pad 7 can always push the second sleeve 4 upward. Among them, a second gasket 34 is provided between the bottom plate 13 and the second elastic rubber pad 7; the friction between the second elastic rubber pad 7 and the bottom plate 13 can be reduced by the second gasket 34.

[0053] A plurality of front mold inserts are fixed on the front mold core 14, namely a first front mold insert 17, a second front mold insert 18, a third front mold insert 19 and a fourth front mold insert 20. The top end of the first front mold insert 17 is fixed on the front mold core 14, and the bottom end extends into the cavity 16. There are two second front mold inserts 18, which are respectively located on both sides of the first front mold insert 17. The top end of the second front mold insert 18 is fixed on the front mold core 14, and the bottom end extends into the cavity 16. The top end of the third front mold insert 19 is fixed on the front mold core 14, and a semicircular threaded hole is provided at the bottom end, and is connected to the cavity 16. The top end of the fourth front mold insert 20 is fixed on the front mold core 14, and the fourth front mold insert 20 is located on the outside of the third front mold insert 19. The bottom end of the fourth front mold insert 20 is provided with a semicircular through hole, and the inner diameter of the through hole is smaller than the inner diameter of the threaded hole at the bottom end of the third front mold insert 19.

[0054] Therefore, during injection molding, since the bottom end of the fourth front mold insert 20 is provided with a semicircular through hole, the inner diameter of the through hole is smaller than the inner diameter of the threaded hole at the bottom end of the third front mold insert 19, the injection colloid can be prevented from flowing outward through the cooperation between the fourth front mold insert 20 and the horizontal cylinder 102 of the metal part 100. During injection molding, the cooperation between the fourth front mold insert 20 and the horizontal cylinder 102 can be kept without injection molding, meeting the production requirements of the product.

[0055] The rear mold core 15 is provided with multiple rear mold inserts, namely the first rear mold insert 21, the second rear mold insert 22, the third rear mold insert 23 and the fourth rear mold insert 24. The bottom end of each rear mold insert is fixed on the rear mold core 15, the upper part of the second sleeve 4 is sleeved in the first rear mold insert 21, the second rear mold insert 22 is located on the outer side of the first rear mold insert 21, the top end of the third rear mold insert 23 is provided with a semicircular threaded hole, and it abuts with the bottom end of the third front mold insert 19, the top end of the fourth rear mold insert 24 is provided with a semicircular through hole, and it abuts with the bottom end of the fourth front mold insert 20.

[0056] Similarly, by cooperating with the fourth rear mold insert 24 and the metal part, there is no injection colloid at the corresponding position of the horizontal cylinder 102, meeting the injection molding requirements of the product. By cooperating with multiple front mold inserts and rear mold inserts, the shape structure of the integrated plug can be easily determined.

[0057] The injection mold of the integrated plug of the present invention further includes a support member 25 and a limit rod 26 (such as Figure 8 As shown in the figure, the support member 25 is T-shaped, the small end of the support member 25 can be inserted between the third front mold insert 19 and the third rear mold insert 23, the large end of the support member 25 is located on the outside of the fourth rear mold insert 24, and the bottom end of the limiting rod 26 is fixed on the ejector plate 1, and the top end can abut against the bottom end of the large end of the support member 25.

[0058] Therefore, when the metal part 100 is placed in the mold cavity 16, the support member 25 can be inserted into the horizontal cylinder 102 through the external structure. The outer diameter of the small end of the support member 25 is consistent with the inner diameter of the horizontal cylinder 102, so that the injection colloid will not flow into the support member 25. At the same time, the support member 25 supports the horizontal cylinder 102 to prevent the horizontal cylinder 102 from being deformed, thereby ensuring the molding accuracy of the product.

[0059] In order to quickly determine the insertion depth of the support member 25 in the horizontal cylinder 102, a limiting step 251 is formed on the support member 25. The outer diameter of the limiting step 251 is greater than the inner diameter of the horizontal cylinder 102. Therefore, when the small end of the support member 25 is inserted into the horizontal cylinder 102, when the limiting step 251 abuts against the outer end surface of the horizontal cylinder 102, the support member 25 cannot be inserted further. Therefore, the limiting step 251 can ensure that the length of the support member 25 inserted into the horizontal cylinder 102 is consistent each time, ensuring product quality and accuracy.

[0060] Among them, the large end 252 of the support member 25 is cylindrical; the top of the limiting rod 26 is integrally formed with a receiving portion, which is arc-shaped, and the curvature of the receiving portion is consistent with the curvature of the support member 25, so that it is easy to match with the bottom end of the support member 25. The receiving portion is tightly attached to the bottom end of the support member 25, so that the limiting rod 26 supports and limits the support rod 25, avoiding the large end of the support member 25 from tilting downward, which is beneficial for the support member 25 to be horizontally inserted into the horizontal cylinder 102, thereby ensuring the injection molding quality.

[0061] When the product is injected, the front template 10 is opened, and the support member 25 is pulled out from the side through the external structure to separate the support member 25 from the product, so that the ejector pin 2 can eject the product and demould it.

[0062] The injection mold of the integrated plug of the present invention also includes a third sleeve 27, which is sleeved on the outside of the second sleeve 4, the bottom end of the third sleeve 27 is fixed on the ejector plate 1, the top end extends into the cavity 16, and is located below the protrusion 41 of the second sleeve 4, the third sleeve 27 is sleeved in the first rear mold insert 21, and is tightly attached to the inner wall of the first rear mold insert 21, the outer periphery of the second sleeve 4 is provided with a chamfering position 42, the chamfering position 42 is located below the protrusion 41, and the top end of the third sleeve 27 is flush with the bottom end of the chamfering position 42. The chamfering position 42 can facilitate the molding of the chamfering of the corresponding position of the product.

[0063] By setting the chamfer 42 on the second sleeve 4 instead of the third sleeve 27, after the product is injection molded, the product can be better ejected upwards through the third sleeve 27 without the product sticking to the third sleeve 27, making demolding more convenient.

[0064] The injection mold of the integrated plug of the present invention further includes a first slider assembly 28 and a second slider assembly 29 , which are respectively disposed on opposite sides of the cavity 16 , and have the same structure as the second slider assembly 29 .

[0065] The first slider assembly 28 includes a slider 281, a side insert 282, an inclined guide rod 283, a moving block 284, a guide block 285 and a compression spring 286. The slider 281 cooperates with the cavity 16 and is fixed to the moving block 284. One end of the side insert 282 is fixed to the moving block 284, and the other end can extend into the first rear mold insert 21. One end of the inclined guide rod 283 is fixed to the front mold plate 10, and the other end can penetrate the moving block 284. The guide block 285 is located on the outside of the moving block 284. A first inclined surface is provided on the inner side of the guide block 285, and a second inclined surface is provided on the outer side of the moving block 284. The first inclined surface can be tightly matched with the second inclined surface. One end of the compression spring 286 abuts against the moving block 284, and the other end abuts against the rear mold core 15.

[0066] In order to facilitate the installation of the compression spring 286 , a slot is provided on the side wall of the moving block 284 . One end of the compression spring 286 is located in the slot, and the other end abuts against the rear mold core 15 .

[0067] The opening and closing process of the first slider assembly 28 and the second slider assembly 29 are the same, and the first slider assembly 28 is now used as an example for explanation. When the mold is closed, the other end of the side insert 282 extends into the first rear mold insert 21, and the slider 281 is close to one side of the cavity 16; the moving block 284 moves to the side close to the cavity 16, and the compression spring 286 is compressed under the action of the moving block 284 and the rear mold core 15. At this time, the guide block 285 is clamped between the front mold plate 13 and the rear mold plate 11, and the moving block 284 and the slider 281 are limited and fixed by the inclined guide rod 283 and the guide block 285, which is convenient for the stability of the product during injection molding.

[0068] When the mold is opened, the oblique guide rod 283 and the guide block 285 gradually move away from the rear template 11 along with the front template 13. Under the guidance of the oblique guide rod 283, the moving block 284 can be pushed to move to the side away from the cavity 16. At the same time, as the guide block 285 moves outward, the first inclined surface also moves upward. When the first inclined surface is upward, due to the setting of the second inclined surface, space is provided for the moving block 284 to move outward. When the moving block 284 moves outward, it drives the side insert 282 and the slider 281 to move away from the cavity 16 to achieve separation from the product. When the moving block 284 moves outward, the rebound force of the compression spring 286 can push the moving block 284 outward, so that the moving block 284 drives the slider 281 to separate from the product faster, which is convenient for the slider 281 to separate from the side of the injection molded product.

[0069] The top of the push rod 5 is provided with a first exhaust portion 51 and a second exhaust portion 52. The first exhaust portion 51 is located above the second exhaust portion 52. A matching hole is provided in the first sleeve 3. The matching hole is connected to the cavity. The push rod 5 matches the matching hole, and the top of the push rod is flush with the top of the first exhaust portion 51. The outer diameter of the first exhaust portion 51 is 0.02mm smaller than the inner diameter of the matching hole, and the outer diameter of the second exhaust portion 52 is 0.04mm smaller than the inner diameter of the matching hole. Therefore, the distance between the outer wall of the first exhaust portion 51 and the inner wall of the matching hole is 0.01mm, and the distance between the outer wall of the second exhaust portion 52 and the inner wall of the matching hole is 0.02mm. Therefore, the air in the cavity 16 can be squeezed downward through the first exhaust portion 51, and the injection colloid cannot pass between the first exhaust portion 51 and the matching hole, which is convenient for exhausting the cavity 16, avoiding the formation of bubbles at the smaller size of the product above the push rod 5 during injection molding, and ensuring the injection molding quality of the product. In order to ensure that the air in the cavity 16 can be discharged downward, one side of the push rod 5 below the second exhaust portion 52 maintains a distance of at least 0.02 mm from the inner wall of the matching hole to ensure that the air in the cavity can be guided downward and discharged.

[0070] The injection mold of the integrated plug of the present invention further includes a reset spring 35 and a mounting rod 33, one end of the mounting rod 33 is fixed on the ejector plate 1, and the other end can penetrate the rear template 11, and the reset spring 35 is sleeved on the mounting rod 33, one end of the reset spring 35 abuts against the ejector plate 1, and the other end abuts against the rear template 11. Therefore, when the mold is opened, the ejector plate 1 drives the ejector upward, and the reset spring 35 is pressed by the ejector plate 1 and the rear template 11; when the product is ejected by the ejector, the ejector plate 1 is pushed downward to reset under the rebound force of the reset spring 35.

[0071] During the injection molding process, the injection mold of the integrated plug of the present invention is provided with two cavities 16 in order to improve the injection molding efficiency. The two cavities 16 have the same structure. The specific opening and closing process of the mold is as follows:

[0072] When mold closing and injection molding are required, the support member 25 is first inserted into the horizontal cylinder 102 from the side, and then the metal member 100 is placed on the rear mold core 15; then the front mold plate 10 moves toward the side of the rear mold plate 11, so that the front mold core 14 and the rear mold core 15 are matched, and the sliders 281 and the side inserts 282 in the first slider assembly 28 and the second slider assembly 29 are moved toward the side of the cavity 16, and each front mold insert and rear mold insert are also matched in place. The first sleeve 3 and the second sleeve 4 are pressed upward and matched with the metal member under the action of the first elastic rubber pad 6 and the second elastic rubber pad 7 respectively; the third sleeve 27 also matches with the cavity to complete the mold closing. After the mold closing is completed, the cavity is injected with glue, and the integrated plug is obtained by injection molding.

[0073] After the injection molding is completed, the mold is opened. When the mold is opened, the front template 10 moves to the side away from the rear template 11. At this time, under the action of the inclined guide rod 283 and the guide block 285, the side insert 282 and the slider 281 can be separated from the product. After the front template 10 is opened in place, the external force acts on the ejector plate 1, pushing the ejector plate 1 to move upward. The ejector 2 is driven by the ejector plate 1 to eject the product from the cavity. The external structure or the operator can remove the support 25 from the metal part 100. At the same time, when the ejector plate 1 moves upward, the third sleeve 27 fixed on the ejector plate 1 moves upward together. The third sleeve 27 can also push the product upward and play the role of an ejector. After the product is ejected, demolding is completed. The ejector plate 1 is reset under the drive of the reset spring 35, driving the ejector 2 and the third sleeve 27 to reset, which is convenient for the next injection molding of the product.

[0074] The above are only preferred embodiments of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. The injection mold of the integrated plug is characterized by: It comprises an ejector plate (1), an ejector (2), a first sleeve (3), a second sleeve (4), a push rod (5), a first elastic rubber pad (6), a second elastic rubber pad (7), and a panel (8), a flow channel plate (9), a front template (10), a rear template (11), a square iron block (12) and a bottom plate (13) which are arranged in sequence from top to bottom; A front mold core (14) is fixed below the front mold plate (10), and a rear mold core (15) is fixed above the rear mold plate (11); the front mold core (14) and the rear mold core (15) are arranged opposite to each other and form a mold cavity (16); The ejector plate (1) is arranged inside the square iron block (12); one end of the ejector (2) is fixed on the ejector plate (1), and the other end is capable of penetrating the rear mold plate (11) and the rear mold core (15) and then extending into the mold cavity (16); The second sleeve (4) is sleeved on the outside of the first sleeve (3), the top ends of the first sleeve (3) and the second sleeve (4) are both extended into the cavity (16), the first elastic rubber pad (6) and the second elastic rubber pad (7) are both arranged on the bottom plate (13), the push rod (5) is sleeved in the first sleeve (3), and the top end of the first sleeve (3) is connected to the cavity (16); The bottom end of the second sleeve (4) abuts against the upper end surface of the second elastic rubber pad (7), and the bottom end of the first sleeve (3) abuts against the upper end surface of the first elastic rubber pad (6); A protrusion (41) is provided on the upper outer periphery of the second cylinder (4); A plurality of front mold inserts are fixed on the front mold core (14), namely a first front mold insert (17), a second front mold insert (18), a third front mold insert (19) and a fourth front mold insert (20). The top end of the first front mold insert (17) is fixed on the front mold core (14), and the bottom end extends into the mold cavity (16). There are two second front mold inserts (18), which are respectively located on both sides of the first front mold insert (17). The top end of the second front mold insert (18) is fixed on the front mold core (14), and the bottom end extends into the mold cavity (16). The end of the third front mold insert (19) extends into the mold cavity (16); the top end of the third front mold insert (19) is fixed on the front mold core (14); the bottom end is provided with a semicircular threaded hole and is connected to the mold cavity (16); the top end of the fourth front mold insert (20) is fixed on the front mold core (14); the fourth front mold insert (20) is located on the outside of the third front mold insert (19); the bottom end of the fourth front mold insert (20) is provided with a semicircular through hole; the inner diameter of the through hole is smaller than the inner diameter of the threaded hole at the bottom end of the third front mold insert (19); The rear mold core (15) is provided with a plurality of rear mold inserts, namely a first rear mold insert (21), a second rear mold insert (22), a third rear mold insert (23) and a fourth rear mold insert (24), the bottom end of each of the rear mold inserts is fixed on the rear mold core (15), the upper part of the second sleeve (4) is sleeved in the first rear mold insert (21), the second rear mold insert (22) is located on the outer side of the first rear mold insert (21), the top end of the third rear mold insert (23) is provided with a semicircular threaded hole, and is abutted against the bottom end of the third front mold insert (19), the top end of the fourth rear mold insert (24) is provided with a semicircular through hole, and is abutted against the bottom end of the fourth front mold insert (20); The injection mold of the integrated plug also includes a third sleeve (27), which is sleeved on the outside of the second sleeve (4), the bottom end of the third sleeve (27) is fixed on the ejector plate (1), the top end extends into the cavity (16), and is located below the protrusion (41) of the second sleeve (4), the third sleeve (27) is sleeved in the first rear mold insert (21), and is tightly attached to the inner wall of the first rear mold insert (21), the outer periphery of the second sleeve (4) is provided with a chamfer (42), the chamfer (42) is located below the protrusion (41), and the top end of the third sleeve (27) is flush with the bottom end of the chamfer (42).

2. The injection mold of the integrated plug according to claim 1, characterized in that: It also includes a support member (25) and a limiting rod (26), wherein the support member (25) is T-shaped, the small end of the support member (25) can be inserted between the third front mold insert (19) and the third rear mold insert (23), the large end of the support member (25) is located outside the fourth rear mold insert (24), and the bottom end of the limiting rod (26) is fixed on the ejector plate (1), and the top end can abut against the bottom end of the large end of the support member (25).

3. The injection mold of the integrated plug according to claim 1, characterized in that: It also includes a first slider assembly (28) and a second slider assembly (29), wherein the first slider assembly (28) and the second slider assembly (29) are respectively arranged on opposite sides of the cavity (16), and the first slider assembly (28) and the second slider assembly (29) have the same structure.

4. The injection mold of the integrated plug according to claim 3, characterized in that: The first slider assembly (28) comprises a slider (281), a side insert (282), an inclined guide rod (283), a moving block (284), a guide block (285) and a compression spring (286); the slider (281) cooperates with the mold cavity (16) and is fixed to the moving block (284); one end of the side insert (282) is fixed to the moving block (284) and the other end can extend into the first rear mold insert (21); One end is fixed on the front template (10), and the other end can pass through the moving block (284); the guide block (285) is located on the outside of the moving block (284); a first inclined surface is provided on the inner side of the guide block (285); a second inclined surface is provided on the outer side of the moving block (284); the first inclined surface can be tightly matched with the second inclined surface; one end of the compression spring (286) is in contact with the moving block (284), and the other end is in contact with the rear mold core (15).

5. The injection mold of the integrated plug according to claim 1, characterized in that: It also includes a first mounting block (30) and a second mounting block (31), wherein the first mounting block (30) is fixed to the bottom of the base plate (13), a first mounting groove (301) is provided on the first mounting block (30), the first elastic rubber pad (6) is placed in the first mounting groove (301), a first gasket (32) is provided between the first cylinder (3) and the first elastic rubber pad (6), the push rod (5) is also located above the first gasket (32), the second mounting block (31) is fixed above the base plate (13), a second mounting groove (311) is provided below the second mounting block (31), and the second elastic rubber pad (7) is located in the second mounting groove (311).

6. The injection mold of the integrated plug according to claim 5, characterized in that: The top end of the push rod (5) is provided with a first exhaust portion (51) and a second exhaust portion (52), the first exhaust portion (51) is located above the second exhaust portion (52), a matching hole is provided in the first sleeve (3), the matching hole is communicated with the cavity, the push rod (5) matches with the matching hole, and the top end of the push rod is flush with the top end of the first exhaust portion (51), the outer diameter of the first exhaust portion (51) is 0.02 mm smaller than the inner diameter of the matching hole, and the outer diameter of the second exhaust portion (52) is 0.04 mm smaller than the inner diameter of the matching hole.

7. The injection mold of the integrated plug according to claim 1 or 2, characterized in that: It also includes a return spring (35) and a mounting rod (33), one end of the mounting rod (33) is fixed to the ejector plate (1), and the other end is capable of passing through the rear template (11), the return spring (35) is sleeved on the mounting rod (33), one end of the return spring (35) is in contact with the ejector plate (1), and the other end is in contact with the rear template (11).

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