Injection molding mold for product with insert

Abstract

The invention discloses an injection molding mold for a product with an insert, which comprises an upper mold plate provided with an upper mold core and a lower mold plate provided with a lower mold core, and further comprises at least one first bending part arranged at the top end of a main body part of the insert positioned in a body, a sliding block is movably installed on the lower die plate and located on the outer side of the lower die core, the end face, facing the lower die core, of the sliding block is connected with a movable die core capable of being embedded into the lower die core, an insert matched with the first bending portion on the insert is movably installed on the upper die core, and a spring is connected between the upper surface of the insert and the upper die plate. On the basis that the insert and the injection molding body are integrally formed, the stability of the position of the insert in the injection molding process can be improved, demolding of the bent part can be rapidly achieved, continuous and elastic downward pressure is given to the bent part in the mold closing and glue injection process, and the stability of the insert in the glue injection process is improved while the insert is not damaged.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to an injection molding die with an insert product. Background Art

[0002] In industrial production, molds are various molds and tools used to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. They are tools used to shape objects.

[0003] The prior art has a Chinese utility model patent with publication number CN205167441U, which discloses a new type of inclined guide column slider side core-pulling injection mold. The patent solves the problems of complex structure, cumbersome operation and poor core-pulling effect of traditional side core-pulling molds.

[0004] However, the above patent does not locate the position of the insert during the injection molding process with the insert, which may easily lead to unstable position. In addition, the position of the bent portion of the insert may also easily shift during the injection molding process. If a method is used in which a hard block directly contacts the bent portion, the bent portion may be damaged. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose an injection molding mold for a product with an insert. The injection molding mold for a product with an insert can improve the stability of the insert position during the injection molding process and facilitate the rapid demolding of the bent part on the basis of realizing the integrated molding of the insert and the injection molding body. In addition, during the mold closing and injection molding process, a continuous and elastic downward pressure is applied to the bent part, thereby improving the stability of the insert during the injection molding process without damaging the insert.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an injection molding mold with an insert product, comprising: an upper mold plate installed with an upper mold core and a lower mold plate installed with a lower mold core, when in a mold closing state, a cavity is formed between the upper mold core and the lower mold core, and the product to be processed further comprises: a body and at least one insert formed in the cavity, the top end of the main body of the insert located in the body has at least one first bending portion extending horizontally outward from the body, and the bottom end of the main body of the insert has at least one second bending portion extending horizontally outward from the body and arranged opposite to the first bending portion; A slider is movably installed on the lower template and outside the lower mold core. A cam pin is installed on the upper template and is engaged with the slider. The cam pin is used to drive the slider to move towards the lower mold core during mold closing and to drive the slider to move away from the lower mold core during mold opening. A moving mold core that can be embedded into the lower mold core is connected to the end surface of the slider facing the lower mold core. When in the mold closed state, one end of the moving mold core opposite to the slider is embedded between the second bending portion and the corresponding first bending portion. Two opposite side surfaces of the moving mold core are both inclined surfaces, so that the width of the moving mold core gradually decreases in the direction away from the slider. A chute that cooperates with the moving mold core is formed on the lower mold core. When in the mold closed state, two side walls of the chute that are inclined surfaces are respectively in surface contact with the two side surfaces of the moving mold core. A insert block that cooperates with the first bending portion on the insert is movably installed on the upper mold core. A spring is connected between the upper surface of the insert block that can move in the vertical direction and the upper template. A receiving groove for the first bending portion to be embedded is formed on the lower surface of the insert block. When in the mold open state, the lower surface of the insert block under the action of the spring is lower than the lower surface of the upper mold core. When in the mold closed state, the inner wall of the receiving groove on the insert block that presses the spring upwards is in pressing contact with the upper surface of the first bending portion, so that the lower surface of the first bending portion is in pressing contact with the upper surface of the moving mold core.

[0007] The further improved solutions in the above technical solutions are as follows: 1. In the above solution, a lower cavity groove for forming the cavity is formed on the upper surface of the lower mold core. The main body portion of the insert is embedded into the lower cavity groove. The top end of the main body portion of the insert further has several third bending portions that horizontally extend outwards from the inside of the product to be processed. A through hole is formed on each of the third bending portions. Several positioning grooves for the third bending portions on the insert to be embedded are formed on the upper surface of the lower mold core and outside the lower cavity groove. Several positioning posts corresponding to the through holes on the third bending portions are embedded and installed on the lower mold core. The upper end surface of each vertically arranged positioning post is higher than the bottom surface of the corresponding positioning groove, so that the through hole on the third bending portion whose lower surface is in contact with the bottom surface of the positioning groove is sleeved on the corresponding positioning post.

[0008] 2. In the above solution, the upper template and the lower template are connected by at least two groups of cam pins and bushings in cooperation.

[0009] 3. In the above solution, four cam pins and bushings are provided, and are respectively installed at the four corners of the upper template and the lower template.

[0010] 4. In the above solution, the slider and the moving mold core are of an integrally formed structure.

[0011] 5. In the above solution, a sliding groove that cooperates with the moving die core is formed in the upper die core.

[0012] 6. In the above solution, at least one lubricating groove for filling grease is respectively formed on two side surfaces of the moving die core.

[0013] 7. In the above solution, the upper end of the spring is embedded in an installation groove formed on the lower surface of the upper template.

[0014] 8. In the above solution, an installation through hole for the insert to penetrate is formed on the lower surface of the upper die core. The upper end of the insert that is in sliding contact with the inner wall of the installation through hole has a protruding portion that extends outward. A limiting groove that cooperates with the protruding portion is formed on the outside of the upper end of the installation through hole. The thickness of the limiting groove that communicates with the installation through hole in the vertical direction is greater than the thickness of the protruding portion, so that the protruding portion can move up and down in the limiting groove.

[0015] 9. In the above solution, when in the open die state, the lower end surface of the protruding portion on the insert under the action of the spring is in pressing contact with the bottom surface of the limiting groove, and the spring is in a compressed state.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The injection molding die for the product with inserts of the present invention has a moving die core connected to the end face of the slider facing the lower die core. The moving die core can be embedded into the lower die core. When in the mold closing state, the end of the moving die core opposite to the slider is embedded between the second bending part and the corresponding first bending part. Both of the two opposite side surfaces of the moving die core are inclined surfaces, so that the width of the moving die core gradually decreases in the direction away from the slider. A sliding groove matching with the moving die core is formed on the lower die core. When in the mold closing state, the two side walls with inclined surfaces in the sliding groove are respectively in surface contact with the two side surfaces of the moving die core. On the basis of realizing the integral molding of the insert and the injection molded body, it can not only improve the stability of the insert position during the injection molding process, but also facilitate the rapid demolding operation between the two opposite bending parts on the insert without damaging the processed and formed product. It can also effectively avoid the wear between the moving die core and the upper and lower die cores during the long-term reciprocating movement of the moving die core, extend its service life while ensuring the position accuracy of the moving die core; further, a insert block matching with the first bending part on the insert is movably installed on the upper die core. A spring is connected between the upper surface of the insert block that can move in the vertical direction and the upper template. A receiving groove for the first bending part to be embedded is formed on the lower surface of the insert block. When in the mold opening state, the lower surface of the insert block under the action of the spring is lower than the lower surface of the upper die core. When in the mold closing state, the inner wall of the receiving groove on the insert block that presses the spring upward is in pressing contact with the upper surface of the first bending part, so that the lower surface of the first bending part is in pressing contact with the upper surface of the moving die core. During the mold closing and injection process, the insert block movably installed on the upper die core gives a continuous and elastic downward pressure to the bending part on the insert from above, improves the stability of the insert during the injection process without damaging the insert, and thus improves the molding accuracy of the product.

[0017] 2. The injection molding die for the product with inserts of the present invention has a lower cavity groove for forming a cavity on the upper surface of the lower die core. The main body part of the insert is embedded into the lower cavity groove. The top end of the main body part of the insert also has several third bending parts extending horizontally outward from the inside of the product to be processed. A through hole is formed on each third bending part. A plurality of positioning grooves for the third bending parts on the insert to be embedded are formed on the upper surface of the lower die core and outside the lower cavity groove. A plurality of positioning columns corresponding to the through holes on the third bending parts are embedded and installed on the lower die core. The upper end surface of each vertically arranged positioning column is higher than the bottom surface of the corresponding positioning groove, so that the through hole on the third bending part whose lower surface is in contact with the bottom surface of the positioning groove is sleeved on the corresponding positioning column, which can position the position of the insert in the cavity before the mold closing and injection, ensure the initial position accuracy of the insert before molding, and thus ensure the position accuracy of the insert in the product body after molding. Description of the Drawings

[0018] Appendix Figure 1 It is a schematic structural diagram of the injection molding die for the product with inserts of the invention; Appendix Figure 2is an attachment Figure 1 Schematic cross-sectional view along A-A in attachment Figure 3 is an attachment Figure 1 Schematic cross-sectional view along B-B in attachment Figure 4 is an attachment Figure 3 Enlarged schematic view at C in attachment Figure 5 is a schematic view of the partial structure of an injection molding die for an invention of a product with inserts Figure 1 ; attachment Figure 6 is an attachment Figure 5 Enlarged schematic view at D in attachment Figure 7 is an attachment Figure 5 Schematic cross-sectional view along E-E in attachment Figure 8 Schematic view of the cavity of an injection molding die for an invention of a product with inserts attachment Figure 9 Schematic view of the second spring in the second embodiment of an injection molding die for an invention of a product with inserts attachment Figure 10 is a schematic view of the partial structure of an injection molding die for an invention of a product with inserts Figure 2 ; attachment Figure 11 is an attachment Figure 10 Enlarged schematic view at F in attachment Figure 12 Schematic view of the partial structure of the second embodiment of an injection molding die for an invention of a product with inserts attachment Figure 13 Schematic view of the structure of an injection molding die for an invention of a product with inserts in the open mold state

[0019] In the above figures: 100, product to be processed; 101, body; 102, insert; 103, first bending part; 104, second bending part; 105, through hole; 106, third bending part; 1, upper mold core; 2, upper template; 3, lower mold core; 4, lower template; 41, installation groove; 5, cavity; 61, guide pillar; 62, guide sleeve; 71, slider; 72, inclined guide pillar; 73, guide rail; 8, moving mold core; 9, chute; 10, insert block; 11, first spring; 12, accommodating groove; 13, installation through hole; 141, convex part; 142, limiting groove; 15, installation groove; 16, lower cavity groove; 17, positioning groove; 18, positioning column; 19, guiding groove; 20, blind hole; 21, pin shaft; 22, second spring; 23, long cutting plane; 24, short cutting plane; 25, installation block. Embodiment

[0020] The present patent can be further clearly understood through the specific embodiments given below, but they do not limit the present patent.

[0021] Embodiment 1: An injection molding die for a product with inserts, comprising: an upper template 2 installed with an upper mold core 1 and a lower template 4 installed with a lower mold core 3. When in the closed mold state, a cavity 5 is formed between the upper mold core 1 and the lower mold core 3. The product 100 to be processed further includes: a body 101 formed in the cavity 5 and at least one insert 102. At the top of the main body part of the insert 102 located in the body 101, there is at least one first bending part 103 extending horizontally outward from the inside of the body 101, and at the bottom of the main body part of the insert 102, there is at least one second bending part 104 extending horizontally outward from the inside of the body 101 and arranged opposite to the first bending part 103; A slider 71 is movably installed on the lower template 4 and outside the lower mold core 3. An inclined guide post 72 is installed on the upper template 2 and cooperates with the slider 71. The inclined guide post 72 is used to drive the slider 71 to move towards the lower mold core 3 when closing the mold and drive the slider 71 to move away from the lower mold core 3 when opening the mold. A moving mold core 8 that can be embedded into the lower mold core 3 is connected to the end surface of the slider 71 facing the lower mold core 3. When in the closed mold state, one end of the moving mold core 8 opposite to the slider 71 is embedded between the second bending part 104 and the corresponding first bending part 103. The two opposite side surfaces of the moving mold core 8 are both inclined surfaces, so that the width of the moving mold core 8 gradually decreases in the direction away from the slider 71. A chute 9 cooperating with the moving mold core 8 is formed on the lower mold core 3. When in the closed mold state, the two side walls of the chute 9 that are inclined surfaces are respectively in surface contact with the two side surfaces of the moving mold core 8; A insert block 10 cooperating with the first bending part 103 on the insert 102 is movably installed on the upper mold core 1. A first spring 11 is connected between the upper surface of the insert block 10 that can move vertically and the upper template 2. A receiving groove 12 for the first bending part 103 to be embedded is formed on the lower surface of the insert block 10. When in the open mold state, the lower surface of the insert block 10 under the action of the first spring 11 is lower than the lower surface of the upper mold core 1. When in the closed mold state, the inner wall of the receiving groove 12 on the insert block 10 that presses the first spring 11 is in pressing contact with the upper surface of the first bending part 103, so that the lower surface of the first bending part 103 is in pressing contact with the upper surface of the moving mold core 8; During mold clamping, the moving mold core moves between two opposite bending parts of the insert. The moving mold core not only serves as part of the surrounding cavity but also plays a role in supporting and positioning the insert, thus ensuring the positional accuracy of the insert during the injection molding process. Additionally, after mold clamping, the insert block movably installed on the upper mold core continuously applies a downward elastic pressure to the bending part of the insert through the spring in a compressed state above it. This not only prevents damage to the insert due to excessive pressure during mold clamping but also avoids the positional deviation of the insert caused by the impact of the glue during the injection process, improving the stability of the insert during the injection process and thus enhancing the molding accuracy of the product.

[0022] On the upper surface of the lower mold core 3, a lower cavity groove 16 for forming the cavity 5 is provided. The main body of the insert 102 is embedded in the lower cavity groove 16. At the top of the main body of the insert 102, there are also several third bending parts 106 that horizontally extend outward from the main body 101 of the product 100 to be processed. A through hole 105 is provided on each of the third bending parts 106. On the upper surface of the lower mold core 3 and outside the lower cavity groove 16, several positioning grooves 17 are provided for the third bending parts 106 of the insert 102 to be embedded. On the lower mold core 3, several positioning posts 18 corresponding to the through holes 105 on the third bending parts 106 are embedded. The upper end surface of each vertically arranged positioning post 18 is higher than the bottom surface of the corresponding positioning groove 17, so that the through hole 105 on the third bending part 106 whose lower surface contacts the bottom surface of the positioning groove 17 is sleeved on the corresponding positioning post 18. In the open mold state, the insert is placed in the lower cavity groove provided on the lower mold core, so that each third bending part is correspondingly embedded in the positioning groove provided on the lower mold core, and it is ensured that the positioning post passes through the through hole on the corresponding third bending part of the insert, thereby ensuring the positional accuracy of the insert before injection molding.

[0023] Between the upper template 2 and the lower template 4, they are connected in cooperation through at least 2 groups of guide columns 61 and guide sleeves 62.

[0024] Both the guide columns 61 and the guide sleeves 62 are provided with 4, and are respectively installed at the four corners of the upper template 2 and the lower template 4.

[0025] The above-mentioned slider 71 and the moving mold core 8 are of an integrally formed structure.

[0026] On the upper mold core 1, the above-mentioned chute 9 for cooperating with the moving mold core 8 is provided.

[0027] On the two side surfaces of the above-mentioned moving mold core 8, at least one lubricating groove (not shown in the figure) for filling grease is respectively provided.

[0028] The upper end of the above-mentioned first spring 11 is embedded in the installation groove 15 provided on the lower surface of the upper template 2.

[0029] A mounting through hole 13 for the insert block 10 to penetrate is formed on the lower surface of the upper mold core 1. The upper end of the insert block 10 in sliding contact with the inner wall of the mounting through hole 13 has a convex portion 141 extending outward. A limiting groove 142 cooperating with the convex portion 141 is formed on the outer side of the upper end of the mounting through hole 13. The thickness of the limiting groove 142 communicating with the mounting through hole 13 in the vertical direction is greater than the thickness of the convex portion 141, so that the convex portion 141 can move up and down in the limiting groove 142.

[0030] When in the mold opening state, the lower end surface of the convex portion 141 on the insert block 10 under the action of the first spring 11 is in extrusion contact with the bottom surface of the limiting groove 142, and the first spring 11 is in an extruded state.

[0031] Embodiment 2: An injection molding mold for a product with inserts, comprising: an upper template 2 installed with an upper mold core 1 and a lower template 4 installed with a lower mold core 3. When in the mold closing state, a cavity 5 is formed between the upper mold core 1 and the lower mold core 3. The product 100 to be processed further comprises: a main body 101 formed in the cavity 5 and at least one insert 102. At least one first bending portion 103 extending horizontally outward from the inside of the main body 101 is provided at the top end of the main body portion of the insert 102 located in the main body 101. At least one second bending portion 104 extending horizontally outward from the inside of the main body 101 and oppositely arranged with the first bending portion 103 is provided at the bottom end of the main body portion of the insert 102; A slider 71 is movably installed on the lower template 4 and outside the lower mold core 3. An inclined guide post 72 cooperating with the slider 71 is installed on the upper template 2. The inclined guide post 72 is used to drive the slider 71 to move towards the lower mold core 3 when closing the mold and drive the slider 71 to move away from the lower mold core 3 when opening the mold. A moving mold core 8 that can be embedded in the lower mold core 3 is connected to the end surface of the slider 71 facing the lower mold core 3. When in the mold closing state, one end of the moving mold core 8 opposite to the slider 71 is embedded between the second bending portion 104 and the corresponding first bending portion 103. Two opposite side surfaces of the moving mold core 8 are both inclined surfaces, so that the width of the moving mold core 8 gradually decreases in the direction away from the slider 71. A sliding groove 9 cooperating with the moving mold core 8 is formed on the lower mold core 3. When in the mold closing state, two side walls of the sliding groove 9 provided as inclined surfaces are respectively in surface contact with the two side surfaces of the moving mold core 8; During mold opening, the moving mold core is driven by the inclined guide pillar and moves away from the formed product along with the slider until the moving mold core completely disengages from the bending parts arranged oppositely up and down on the insert, so as to facilitate subsequent demolding operations without damaging the processed and formed product. Moreover, through the arrangement of the inclined surface on the moving mold core and the sliding groove cooperating with it, the inner wall of the sliding groove can be closely attached to the moving mold core in the mold closing state to ensure the position accuracy of the moving mold core during the injection molding process, and the contact friction between the moving mold core and the inner wall of the sliding groove can be reduced during mold opening, while ensuring the position accuracy of the moving mold core, its service life can be extended. A insert block 10 which cooperates with the first bending part 103 on the insert 102 is movably installed on the upper mold core 1. A first spring 11 is connected between the upper surface of the insert block 10 which can move in the vertical direction and the upper template 2. A receiving groove 12 for the first bending part 103 to be inserted is formed on the lower surface of the insert block 10. When in the mold opening state, the lower surface of the insert block 10 under the action of the first spring 11 is lower than the lower surface of the upper mold core 1. When in the mold closing state, the inner wall of the receiving groove 12 on the insert block 10 which presses the first spring 11 upward is in pressing contact with the upper surface of the first bending part 103, so that the lower surface of the first bending part 103 is in pressing contact with the upper surface of the moving mold core 8.

[0032] The upper template 2 and the lower template 4 are connected by at least two groups of guide pillars 61 and guide sleeves 62 in cooperation.

[0033] The above-mentioned slider 71 and the moving mold core 8 are of an integrally formed structure.

[0034] The above-mentioned sliding groove 9 which cooperates with the moving mold core 8 is formed on the upper mold core 1.

[0035] The upper end of the above-mentioned first spring 11 is embedded in the installation groove 15 formed on the lower surface of the upper template 2.

[0036] An installation through hole 13 for the insert block 10 to pass through is formed on the lower surface of the above-mentioned upper mold core 1. The upper end of the insert block 10 which is in sliding contact with the inner wall of the installation through hole 13 has a convex part 141 extending outwards. A limiting groove 142 which cooperates with the convex part 141 is formed on the outside of the upper end of the installation through hole 13. The thickness of the limiting groove 142 communicating with the installation through hole 13 in the vertical direction is greater than the thickness of the convex part 141, so that the convex part 141 can move up and down in the limiting groove 142.

[0037] The first spring 11. The upper surface of the above-mentioned slider 71 is provided with a guiding groove 19 that slopes away from the lower die insert 3. The inclined guide post 72 installed at the upper end on the upper template 2 is inclined at the same angle as the guiding groove 19 and can be embedded in the guiding groove 19. The upper middle parts of the front and rear side walls of the guiding groove 19 each have a blind hole 20. One end of a pin shaft 21 that can be movably embedded in the blind hole 20 is connected to the bottom of the blind hole 20 through a second spring 22. When the second spring 22 is in a relaxed state, the other end of the pin shaft 21 can extend outwards from the blind hole 20; One side of the above-mentioned inclined guide post 72 opposite to the upper die insert 1 has a long cutting plane 23. One side of each of the two oppositely arranged pin shafts 21 away from the second spring 22 and opposite to the upper die insert 1 has a short cutting plane 24. The inclined directions of the long cutting plane 23 and the short cutting plane 24 are the same as the inclined direction of the inclined guide post 72. When in the mold closing state, the arc surface of the inclined guide post 72 embedded in the guiding groove 19 opposite to the long cutting plane 23 fits against the inner wall of the guiding groove 19 near the end close to the lower die insert 3, and the long cutting plane 23 of the inclined guide post 72 fits against the arc surfaces of the two pin shafts 21 on the side close to the lower die insert 3. Through the cooperation between the inclined guide post with a long cutting plane and the two retractable pin shafts with short cutting planes, it is possible to push the slider to move right and left during the up and down movement of the inclined guide post relative to the slider, and it is also possible to avoid the influence of the stroke error of the upper and lower templates on the moving position of the slider. While realizing the automatic reciprocating movement of the slider during the entire process of opening and closing of the upper and lower templates, the position accuracy of the slider movement is ensured; The above-mentioned guiding groove 19 is a through groove that penetrates up and down. The inner wall of the guiding groove 19 near the end close to the lower die insert 3 is an arc surface that cooperates with the arc surface of the inclined guide post 72 opposite to the long cutting plane 23, and the end of the guiding groove 19 away from the lower die insert 3 is through.

[0038] The upper end of the above-mentioned inclined guide post 72 is fixedly installed on the upper template 2 through a mounting block 25 embedded in the lower surface of the upper template 2; The upper surface of the above-mentioned lower template 4 is provided with a mounting groove 41. The lower part of the slider 71 is embedded in the mounting groove 41 and is slidably matched with guide rails 73 installed at the front and rear side edges of the mounting groove 41.

[0039] The working principle of the present invention is as follows: First, in the mold opening state, the insert is placed into the lower cavity groove opened on the lower die insert, so that each third bending part is correspondingly embedded into the positioning groove opened on the lower die insert, and it is ensured that the positioning post passes through the through hole on the corresponding third bending part of the insert, so as to ensure the position accuracy of the insert before injection molding; During mold closing, the moving mold core moves between two opposite bent portions on the insert. The moving mold core not only serves as part of the surrounding mold cavity but also can support and position the insert, thereby ensuring the positional accuracy of the insert during the injection molding process. Additionally, after mold closing, the insert block movably installed on the upper mold core continuously applies a downward elastic pressure to the bent portion on the insert through the spring in a compressed state above it. This not only prevents damage to the insert due to excessive pressure during mold closing but also avoids position deviation of the insert caused by the impact of the glue during the injection process, improving the stability of the insert during the injection process and thus enhancing the molding accuracy of the product. Next, inject glue into the mold cavity, hold the pressure, and cool until the product is formed. During mold opening, the moving mold core is driven by the angled guide pillar and moves away from the formed product along with the slider until the moving mold core completely disengages from the upper and lower opposite bent portions on the insert, facilitating subsequent demolding operations without damaging the processed and formed product. Moreover, through the setting of the inclined surface on the moving mold core and the matching chute, not only can the moving mold core be closely attached to the inner wall of the chute in the mold closed state to ensure the positional accuracy of the moving mold core during the injection molding process, but also the contact friction between the moving mold core and the inner wall of the chute can be reduced during mold opening, extending its service life while ensuring the positional accuracy of the moving mold core.

[0040] When using the injection molding mold for the product with insert as described above, on the basis of realizing the integral molding of the insert and the injection molding body, it can not only improve the stability of the insert position during the injection molding process, but also facilitate the rapid demolding operation between the two opposite bent portions on the insert without damaging the processed and formed product. It can also effectively avoid wear between the moving mold core and the upper and lower mold cores during the long-term reciprocating movement of the moving mold core, extending its service life while ensuring the positional accuracy of the moving mold core. Further, during the mold closing and injection process, the insert block movably installed on the upper mold core continuously applies a continuous and elastic downward pressure to the bent portion on the insert from above, improving the stability of the insert during the injection process without damaging the insert, thereby enhancing the molding accuracy of the product. Additionally, the position of the insert in the mold cavity can be positioned before mold closing and injection, ensuring the initial positional accuracy of the insert before molding and thus the positional accuracy of the insert in the product body after molding.

[0041] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and shall not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An injection molding die for an insert-containing product, comprising: An upper template (2) equipped with an upper die insert (1) and a lower template (4) equipped with a lower die insert (3). When in the mold-closed state, a cavity (5) is formed between the upper die insert (1) and the lower die insert (3). It is characterized in that: the product to be processed (100) further includes: a body (101) formed in the cavity (5) and at least one insert (102). The top end of the main body part of the insert (102) located in the body (101) has at least one first bending part (103) horizontally extending outward from the inside of the body (101), and the bottom end of the main body part of the insert (102) has at least one second bending part (104) horizontally extending outward from the inside of the body (101) and arranged opposite to the first bending part (103). A slider (71) is movably installed on the lower template (4) and outside the lower die insert (3). An inclined guide post (72) cooperating with the slider (71) is installed on the upper template (2). The inclined guide post (72) is used to drive the slider (71) to move towards the direction close to the lower die insert (3) during mold closing and drive the slider (71) to move away from the lower die insert (3) during mold opening. A movable die insert (8) that can be embedded in the lower die insert (3) is connected to the end face of the slider (71) facing the lower die insert (3). When in the mold-closed state, one end of the movable die insert (8) opposite to the slider (71) is embedded between the second bending part (104) and the corresponding first bending part (103). Two opposite side surfaces of the movable die insert (8) are inclined planes, so that the width of the movable die insert (8) gradually decreases in the direction away from the slider (71). A chute (9) cooperating with the movable die insert (8) is opened on the lower die insert (3). When in the mold-closed state, the two side walls of the chute (9) set as inclined planes are respectively in surface contact with the two side surfaces of the movable die insert (8). A insert block (10) cooperating with the first bending part (103) on the insert (102) is movably installed on the upper die insert (1). A first spring (11) is connected between the upper surface of the insert block (10) that can move vertically and the upper template (2). A receiving groove (12) for the first bending part (103) to be embedded is opened on the lower surface of the insert block (10). When in the mold-open state, the lower surface of the insert block (10) under the action of the first spring (11) is lower than the lower surface of the upper die insert (1). When in the mold-closed state, the inner wall of the receiving groove (12) on the insert block (10) that upwardly presses the first spring (11) is in pressing contact with the upper surface of the first bending part (103), so that the lower surface of the first bending part (103) is in pressing contact with the upper surface of the movable die insert (8).

2. The injection molding die for the product with inserts according to claim 1, characterized in that: The upper surface of the lower mold core (3) is provided with a lower cavity groove (16) for forming the cavity (5). The main body of the insert (102) is embedded in the lower cavity groove (16). The top of the main body of the insert (102) further has a plurality of third bending portions (106) horizontally extending outward from the main body (101) of the product to be processed (100). A through hole (105) is provided on each of the third bending portions (106). The upper surface of the lower mold core (3) and outside the lower cavity groove (16) is provided with a plurality of positioning grooves (17) for the third bending portions (106) on the insert (102) to be embedded. A plurality of positioning posts (18) corresponding to the through holes (105) on the third bending portions (106) are embedded and installed on the lower mold core (3). The upper end surface of each vertically arranged positioning post (18) is higher than the bottom surface of the corresponding positioning groove (17), so that the through hole (105) on the third bending portion (106) whose lower surface contacts the bottom surface of the positioning groove (17) is sleeved on the corresponding positioning post (18).

3. The injection molding die for the product with inserts according to claim 1, wherein: The upper template (2) and the lower template (4) are cooperatively connected through at least two groups of guide posts (61) and guide sleeves (62).

4. The injection molding die for the product with inserts according to claim 3, characterized in that: There are 4 guide posts (61) and guide sleeves (62), which are respectively installed at the four corners of the upper template (2) and the lower template (4).

5. The injection molding die for the product with inserts according to claim 1, wherein: The slider (71) and the moving mold core (8) are integrally formed structures.

6. The injection molding die for the product with inserts according to claim 1, characterized in that: The upper mold core (1) is provided with the chute (9) that cooperates with the moving mold core (8).

7. The injection molding die for the product with inserts according to claim 1, characterized in that: At least one lubricating groove for filling grease is respectively provided on two side surfaces of the moving mold core (8).

8. The injection molding die for the product with inserts according to claim 1, wherein: The upper end of the first spring (11) is embedded in the installation groove (15) provided on the lower surface of the upper template (2).

9. The injection molding die for the product with inserts according to claim 1, characterized in that: The lower surface of the upper mold core (1) is provided with an installation through hole (13) for the insert block (10) to penetrate. The upper end of the insert block (10) in sliding contact with the inner wall of the installation through hole (13) has a protruding portion (141) extending outward. The outer side of the upper end of the installation through hole (13) is provided with a limiting groove (142) that cooperates with the protruding portion (141). The thickness of the limiting groove (142) communicating with the installation through hole (13) in the vertical direction is greater than the thickness of the protruding portion (141), so that the protruding portion (141) can move up and down in the limiting groove (142).

10. The injection molding die for the product with inserts according to claim 9, characterized in that: When in the open mold state, the lower end surface of the protruding portion (141) on the insert block (10) under the action of the first spring (11) is in pressing contact with the bottom surface of the limiting groove (142), and the first spring (11) is in a compressed state.

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