Injection mold

Abstract

The utility model relates to the technical field of molds, in particular to an injection mold. The problem that in the prior art, the demolding degrees of different parts of a plastic part in a mold are inconsistent after mold splitting is solved, and the practicability of equipment is improved. The mold structurally comprises an upper mold plate and a lower mold plate, the side, close to the lower mold plate, of the upper mold plate is detachably connected with a first mold core, the side, close to the upper mold plate, of the lower mold plate is detachably connected with a second mold core, and the first mold core corresponds to the second mold core; the end, close to the second mold core, of the lower mold plate is provided with a first ejection structure used for ejecting one end of the plastic part in the second mold core out of the lower mold plate, and the other end, close to the second mold core, of the lower mold plate is provided with a second ejection structure used for ejecting the other end of the plastic part in the second mold core out of the lower mold plate. According to the utility model, the demolding efficiency is accelerated, the deformation of the injection molded part during demolding is less, the injection molded part is more complete after demolding, and the product quality is improved. The utility model has strong practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and specifically to an injection mold. Background Art

[0002] An injection mold is a tool used in the plastic injection molding process. It injects molten plastic into the mold, cools and solidifies inside the mold, and finally forms the desired plastic product tool.

[0003] In order to facilitate ejection of the plastic part in the mold after mold separation, the existing injection mold often sets top sliders at both ends of the plastic part of the lower template, and a movable slider abuts on the top slider, and the movable slider pushes the top slider to make the plastic part separate from the lower template.

[0004] Although this method can realize ejection of the plastic part in the mold after mold separation, the following problems still exist: since the top sliders at both ends are set separately, it is impossible to move the top sliders at both ends at the same time to achieve the purpose of simultaneously removing the two ends of the plastic part from the mold. This may cause the degree of demolding of one end to be greater than that of the other end during the demolding process of the plastic part, causing one end to tilt. This not only affects the demolding efficiency, but also the plastic part may be squeezed and deformed during the demolding process, affecting the product quality. Utility Model Content

[0005] The utility model provides an injection mold, which solves the problem of inconsistent demoulding degrees of different parts of a plastic part in a mold after mold separation in the prior art, and improves the practicability of the equipment.

[0006] The technical solution of the utility model is as follows:

[0007] An injection mold comprises an upper mold plate and a lower mold plate.

[0008] The upper template is detachably connected to a first mold core on a side close to the lower template, and the lower template is detachably connected to a second mold core on a side close to the upper template. The first mold core corresponds to the second mold core. One end of the lower template close to the second mold core is provided with a first ejection structure for ejecting one end of a plastic part in the second mold core from the lower template. The other end of the lower template close to the second mold core is provided with a second ejection structure for ejecting the other end of the plastic part in the second mold core from the lower template. The lower template is also provided with a synchronization structure for synchronously controlling the first ejection structure and the second ejection structure.

[0009] Further, the first ejection structure includes an ejection plate, the upper template is provided with an embedding groove, the embedding groove corresponds to the ejection plate, and the embedding groove is slidably connected to the ejection plate, a sliding rod is fixed to the lower end of the ejection plate, the cross-section of the sliding rod is a square structure, the lower template is provided with a first sliding groove slidably connected to the sliding rod, the bottom of the first sliding groove is provided with a second sliding groove, the central axis of the first sliding groove is perpendicular to the central axis of the second sliding groove, a sliding member is slidably connected in the second sliding groove, the bottom of the sliding rod is provided with a first sliding inclined surface, the end of the sliding member is provided with a second sliding inclined surface abutting against the first sliding inclined surface, and the first ejection structure and the second ejection structure have the same structure.

[0010] Furthermore, the synchronous structure includes a synchronous belt, and the lower template is also provided with a first mounting groove and a second mounting groove, the first mounting groove is rotatably connected to a first screw rod, the second mounting groove is rotatably connected to a second screw rod, the synchronous belt passes through the second sliding groove, and the two ends of the synchronous belt are respectively connected to the first screw rod and the second screw rod, the two ends of the first screw rod are respectively provided with a first external thread and a second external thread, the rotation direction of the first external thread is opposite to that of the second external thread, the two ends of the second screw rod are respectively provided with a third external thread and a fourth external thread, the rotation directions of the third external thread and the fourth external thread are opposite, the two ends of the sliding member on the first ejection structure are respectively threadedly connected to the first external thread and the third external thread, and the two ends of the sliding member on the second ejection structure are respectively threadedly connected to the second external thread and the fourth external thread.

[0011] Furthermore, the upper template is provided with a first placement groove near the lower template side, the first placement groove is provided with a first mold core, the first mold core and the first placement groove are fixed by a threaded connection, and the lower template is provided with a second placement groove near the upper template side, the second placement groove is provided with a second mold core, and the second mold core and the second placement groove are fixed by a threaded connection.

[0012] Furthermore, the second mold core is provided with demoulding grooves on the ejector plate sides near both ends, and the first mold core is provided with a plurality of die parts, each demoulding groove corresponds to a die part one by one, and the demoulding groove and the die part have the same shape.

[0013] Furthermore, a rotation hole is provided on the outer wall of the lower template, an adjusting bolt is rotatably connected in the rotation hole, and the adjusting bolt is fixedly connected to the end of the first screw rod.

[0014] Furthermore, the upper template is provided with a plurality of positioning rods near the lower template, and the lower template is provided with a plurality of positioning grooves. Each positioning rod is slidably connected to the positioning groove, and each positioning rod corresponds to the positioning groove one by one.

[0015] The working principle and beneficial effects of the utility model are:

[0016] The demoulding process of this embodiment is as follows: when the injection mold needs to be demoulded, the upper mold plate is first moved away from the lower mold plate, and then the adjusting bolt is rotated. Driven by the synchronous belt, the first screw rod and the second screw rod are rotated, so that the sliding member on the first ejection structure and the sliding member on the second ejection structure respectively drive their respective sliding rods to move, so that the injection molded part in the second mold core is ejected.

[0017] The utility model sets a first ejection structure and a second ejection structure on the lower mold plate, and synchronously drives the first ejection structure and the second ejection structure through a synchronous structure, so that both ends of the injection molded part in the second mold core are synchronously ejected and separated from the second mold core. It replaces the design of ejecting the injection molded part from both ends in the prior art. The utility model not only speeds up the demoulding efficiency, but also reduces the deformation of the injection molded part during demoulding, and the injection molded part is more complete after demoulding, thereby improving the product quality. The utility model has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural schematic diagram of the prior art;

[0020] Figure 2 This is a schematic diagram of the structure of the first template and the second template in this embodiment;

[0021] Figure 3 is a schematic structural diagram of the first mold core in this embodiment;

[0022] Figure 4 is a schematic structural diagram of the second mold core in this embodiment;

[0023] Figure 5 is a schematic structural diagram of the second template in this embodiment;

[0024] Figure 6 is a structural diagram of the synchronization structure in this embodiment;

[0025] Figure 7 is a structural schematic diagram of the first ejection structure in this embodiment;

[0026] Figure 8 Schematic diagram of the structure of the second template in this embodiment.

[0027] In the figure:

[0028] 1. Upper template; 11. First placement slot; 12. Positioning rod; 13. Embedding slot; 2. Lower template; 21. Second placement slot; 22. First mounting slot; 23. Second mounting slot; 24. Rotation hole; 25. Second sliding slot; 26. First sliding slot; 27. Positioning slot; 3. Ejector plate; 31. Sliding rod; 311. First sliding slope; 4. Adjusting bolt; 51. First screw rod; 511. First external thread; 512. Second external thread; 52. Second screw rod; 521. Third external thread; 522. Fourth external thread; 6. Sliding piece; 61. Second sliding slope; 7. Synchronous belt; 8. First mold core; 81. Pressing mold piece; 9. Second mold core; 91. Demolding groove. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 2 to Figure 8 As shown, this embodiment proposes an injection mold, and its structure includes an upper mold plate 1 and a lower mold plate 2. In this embodiment, the first mold core 8 is detachably connected and arranged on the side of the upper mold plate 1 close to the lower mold plate 2, and the second mold core 9 is detachably connected and arranged on the side of the lower mold plate 2 close to the upper mold plate 1. The first mold core 8 corresponds to the second mold core 9. The first ejection structure is arranged at one end of the lower mold plate 2 close to the second mold core 9, and is used to eject one end of the plastic part in the second mold core 9 from the lower mold plate 2. The second ejection structure is arranged at the other end of the lower mold plate 2 close to the second mold core 9, and is used to eject the other end of the plastic part in the second mold core 9 from the lower mold plate 2. The synchronization structure is arranged on the lower mold plate 2, and is used to synchronously control the first ejection structure and the second ejection structure.

[0031] In this embodiment, a plurality of positioning rods 12 are arranged on the side of the upper mold plate 1 close to the lower mold plate 2, and a plurality of positioning grooves 27 are arranged on the lower mold plate 2. Each positioning rod 12 is slidably connected to the positioning groove 27, and each positioning rod 12 corresponds to the positioning groove 27. This is a design that facilitates mold closing and positioning, and prevents the upper mold plate 1 and the lower mold plate 2 from being skewed when closing the mold, resulting in product deformation.

[0032] The first ejection structure in this embodiment includes an ejection plate 3, an embedding groove 13 is arranged on the upper mold plate 1, the embedding groove 13 corresponds to the ejection plate 3, and the embedding groove 13 is slidably connected to the ejection plate 3, and the sliding rod 31 is fixedly arranged at the lower end of the ejection plate 3. The cross section of the sliding rod 31 is a square structure, which is used to prevent the sliding rod 31 from tilting when sliding. The first sliding groove 26 is arranged on the lower mold plate 2, and it is slidably connected to the sliding rod 31. The second sliding groove 25 is arranged at the bottom of the first sliding groove 26, and the central axis of the first sliding groove 26 is perpendicular to the central axis of the second sliding groove 25. The sliding member 6 is slidably arranged in the second sliding groove 25, the first sliding inclined surface 311 is arranged at the bottom of the sliding rod 31, and the second sliding inclined surface 61 is arranged at the end of the sliding member 6, which abuts against the first sliding inclined surface 311. The first ejection structure and the second ejection structure have the same structure. When the sliding member 6 is moved in this embodiment, the first sliding inclined surface 311 abuts against the second sliding inclined surface 61 so that the sliding rod 31 pushes the abutting rod to move, so that the injection piece in the second mold core 9 can be separated from the second mold core 9, making it easier to remove the injection piece.

[0033] The synchronous structure in this embodiment includes a synchronous belt 7, a first mounting groove 22 and a second mounting groove 23 are arranged on the lower template 2, a first screw rod 51 is rotatably arranged in the first mounting groove 22, and a second screw rod 52 is rotatably arranged in the second mounting groove 23, the synchronous belt 7 passes through the second sliding groove 25, and two ends of the synchronous belt 7 are respectively connected to the first screw rod 51 and the second screw rod 52, a first external thread 511 and a second external thread 512 are arranged at two ends of the first screw rod 51, and the rotation direction of the first external thread 511 is opposite to that of the second external thread 512, a third external thread 521 and a fourth external thread 522 are arranged at two ends of the second screw rod 52, and the rotation directions of the third external thread 521 and the fourth external thread 522 are opposite, two ends of the sliding member 6 on the first ejection structure are respectively threadedly connected to the first external thread 511 and the third external thread 521, and two ends of the sliding member 6 on the second ejection structure are respectively threadedly connected to the second external thread 512 and the fourth external thread 522. In this embodiment, when the first screw rod 51 rotates, the second screw rod 52 is driven to rotate synchronously through the synchronous belt 7, so that the sliding member 6 on the first ejection structure and the sliding member 6 on the second ejection structure on the first screw rod 51 and the second screw rod 52 move toward or away from each other synchronously, so that the ejection plate 3 on the first ejection structure and the ejection plate 3 on the second ejection structure rise or fall synchronously, so that both ends of the injection part are separated from the second mold core 9 at the same time.

[0034] The rotation hole 24 in this embodiment is set on the outer wall of the lower mold plate 2, the adjusting bolt 4 is rotatably set in the rotation hole 24, and the adjusting bolt 4 is fixedly connected to the end of the first screw rod 51. This design is to facilitate the adjustment of the sliding height of the ejection plate 3, and the user can adjust the ejection height of the ejection plate 3 by himself according to the needs.

[0035] The demoulding groove 91 in this embodiment is arranged on the ejection plate 3 side near the two ends of the second mold core 9, and a plurality of die parts 81 are arranged on the first mold core 8, and each demoulding groove 91 corresponds to a die part 81 one by one, and the demoulding groove 91 and the die part 81 have the same shape. The design of the demoulding groove 91 and the die part 81 in this embodiment makes it possible to produce a protruding plate at both ends of the produced injection part, and the injection part can be separated from the second mold core 9 by moving the protruding plate, avoiding direct contact with the injection part to cause deformation of the injection part and affect product quality. The injection part produced in this embodiment can be cut according to actual needs.

[0036] In this embodiment, the first placement groove 11 is arranged on the side of the upper mold plate 1 close to the lower mold plate 2, the first mold core 8 is arranged in the first placement groove 11, the first mold core 8 is fixed to the first placement groove 11 by threaded connection, the second placement groove 21 is arranged on the side of the lower mold plate 2 close to the upper mold plate 1, the second mold core 9 is arranged in the second placement groove 21, and the second mold core 9 is fixed to the second placement groove 21 by threaded connection. This design is to facilitate the removal, installation and replacement of the first mold core 8 and the second mold core 9.

[0037] Demolding process of this embodiment: when the injection mold needs to be demolded, the upper mold plate 1 is first moved away from the lower mold plate 2, and then the adjusting bolt 4 is rotated. Driven by the synchronous belt 7, the first screw rod 51 and the second screw rod 52 rotate, so that the sliding member 6 on the first ejection structure and the sliding member 6 on the second ejection structure respectively drive their respective sliding rods 31 to move, so that the injection molded part in the second mold core 9 is ejected.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: The upper template (1) is detachably connected to a first mold core (8) on the side close to the lower template (2), and the lower template (2) is detachably connected to a second mold core (9) on the side close to the upper template (1). The first mold core (8) corresponds to the second mold core (9). One end of the lower template (2) close to the second mold core (9) is provided with a first ejection structure for ejecting one end of a plastic part in the second mold core (9) from the lower template (2). The other end of the lower template (2) close to the second mold core (9) is provided with a second ejection structure for ejecting the other end of the plastic part in the second mold core (9) from the lower template (2). The lower template (2) is also provided with a synchronization structure for synchronously controlling the first ejection structure and the second ejection structure.

2. An injection mold according to claim 1, characterized in that: The first ejection structure comprises an ejection plate (3), the upper template (1) is provided with an embedding groove (13), the embedding groove (13) corresponds to the ejection plate (3), and the embedding groove (13) is slidably connected to the ejection plate (3), a sliding rod (31) is fixed at the lower end of the ejection plate (3), and the cross section of the sliding rod (31) is a square structure, and the lower template (2) is provided with a first sliding groove (26) slidably connected to the sliding rod (31), and the first sliding A second sliding groove (25) is provided at the bottom of the groove (26); a central axis of the first sliding groove (26) is perpendicular to a central axis of the second sliding groove (25); a sliding member (6) is slidably connected in the second sliding groove (25); a first sliding inclined surface (311) is provided at the bottom of the sliding rod (31); a second sliding inclined surface (61) abutting against the first sliding inclined surface (311) is provided at the end of the sliding member (6); and the first ejection structure and the second ejection structure are identical in structure.

3. An injection mold according to claim 2, characterized in that: The synchronous structure comprises a synchronous belt (7), and the lower template (2) is also provided with a first mounting groove (22) and a second mounting groove (23), a first screw rod (51) is rotatably connected in the first mounting groove (22), and a second screw rod (52) is rotatably connected in the second mounting groove (23), the synchronous belt (7) passes through the second sliding groove (25), and two ends of the synchronous belt (7) are respectively connected to the first screw rod (51) and the second screw rod (52), and the two ends of the first screw rod (51) are respectively provided with a first external thread (511) and a second external thread (512), The rotation direction of the first external thread (511) is opposite to that of the second external thread (512); the second screw rod (52) is provided with a third external thread (521) and a fourth external thread (522) at two ends respectively; the third external thread (521) and the fourth external thread (522) have opposite rotation directions; the two ends of the sliding member (6) on the first ejection structure are threadedly connected to the first external thread (511) and the third external thread (521) respectively; and the two ends of the sliding member (6) on the second ejection structure are threadedly connected to the second external thread (512) and the fourth external thread (522) respectively.

4. The injection mold according to claim 1, characterized in that: The upper template (1) is provided with a first placement groove (11) near the lower template (2), a first mold core (8) is provided in the first placement groove (11), and the first mold core (8) and the first placement groove (11) are fixed by threaded connection; the lower template (2) is provided with a second placement groove (21) near the upper template (1), a second mold core (9) is provided in the second placement groove (21), and the second mold core (9) and the second placement groove (21) are fixed by threaded connection.

5. The injection mold according to claim 1, characterized in that: The second mold core (9) is provided with demoulding grooves (91) on the ejection plate (3) sides close to both ends, and the first mold core (8) is provided with a plurality of die parts (81), each of the demoulding grooves (91) corresponds to a die part (81) one by one, and the demoulding grooves (91) and the die parts (81) have the same shape.

6. The injection mold according to claim 3, characterized in that: The outer wall of the lower template (2) is also provided with a rotation hole (24), an adjusting bolt (4) is rotatably connected in the rotation hole (24), and the adjusting bolt (4) is fixedly connected to the end of the first screw rod (51).

7. The injection mold according to claim 1, characterized in that: The upper template (1) is also provided with a plurality of positioning rods (12) on the side close to the lower template (2), and the lower template (2) is also provided with a plurality of positioning grooves (27), each of the positioning rods (12) is slidably connected to the positioning groove (27), and each of the positioning rods (12) corresponds to the positioning groove (27) one by one.

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