In-mold cutting and separating injection mold structure for curved-surface injection molding part

Abstract

The utility model discloses an in-mold cutting-off and separating injection mold structure for a curved-surface injection molding part, and relates to the technical field of in-mold cutting-off and separating injection molds. Comprising a lower die base, hydraulic rods are fixedly connected to the four ends of the lower die base, the telescopic ends of the hydraulic rods are fixedly connected with an upper die base, when a second gear plate is driven downwards along a sliding groove in the upper die base, a die cutter connected to the second gear plate through a connecting block is driven downwards, and die cutting separation work is achieved; therefore, die cutting work is carried out while opening and closing material taking are carried out on the upper die base through the hydraulic rod, die cutting work is carried out while material taking is carried out, the production efficiency is greatly improved, the labor cost is reduced, the influence of human factors on the product quality is reduced, and the product quality is improved. And the hydraulic rod can be controlled to ascend and descend to conduct ascending and descending die cutting work on the die cutter in a reciprocating mode, and the die cutting efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of in-mold cutting and separating injection molds, in particular to an in-mold cutting and separating injection mold structure for curved surface injection molded parts. Background Art

[0002] With the rapid development of the plastics industry, plastic products have become one of the indispensable important materials in modern society due to their excellent physical properties and wide application fields. In the production process of plastic products, injection molds are a key link, and their design and manufacturing level directly determines the quality and production efficiency of plastic products.

[0003] After the plastic product is injection molded, some rubber will remain between the gate and the product. The current cutting method is to separate the upper and lower molds, take the product out of the mold cavity and cut it manually. After injection molding, the traditional injection mold needs to take out the material and then perform die cutting, which not only increases the production cost, but also reduces the production efficiency. For this reason, the utility model provides an in-mold cutting and separation injection mold structure for curved injection molded parts. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an in-mold cutting and separating injection mold structure for curved surface injection molded parts, which solves the problem that the injection mold needs to take out the material and then perform die cutting after injection molding.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: for the in-mold cutting and separation injection mold structure of curved surface injection molded parts, it includes a lower mold base, the four ends of the lower mold base are fixedly connected with hydraulic rods, the telescopic end of the hydraulic rod is fixedly connected with an upper mold base, and the lower mold base and the upper mold base are provided with a die cutting component and a material taking component for cutting and separation;

[0006] The die-cutting assembly includes an active cavity provided inside the lower die base, the upper inner wall of the active cavity is rotatably connected to a driving gear, a slide groove is provided inside the upper die base, a first gear plate is fixedly connected to the left inner wall of the slide groove, and the first gear plate is meshed with the driving gear, a second gear plate is slidably connected inside the slide groove, and the second gear plate is meshed with the driving gear and is symmetrically installed with respect to the first gear plate, a connecting block is fixedly connected to the right side wall of the second gear plate, and a die-cutting knife is fixedly connected to the end of the connecting block;

[0007] The material taking assembly comprises a push plate arranged at the lower end of the second gear plate for driving the telescopic rod to move.

[0008] Preferably, the lower end of the push plate is fixedly connected to a piston rod, the lower end of the movable cavity is fixedly connected to a cavity tube, and the piston rod is located inside the movable cavity, a flow cavity connected to the cavity tube is opened inside the lower mold base, a telescopic cavity is provided at the end of the flow cavity, and a telescopic rod is provided inside the telescopic cavity.

[0009] Preferably, the top end of the telescopic rod is fixedly connected to a support plate, and the four ends of the support plate are connected to telescopic sleeve rods.

[0010] Preferably, a mold cavity is opened at the inner center of the lower mold base, and a mold core is arranged inside the mold cavity.

[0011] Preferably, a first injection port is provided at the upper end of the upper mold base, and a second injection port is provided inside the lower mold base in a flow-through structure with the first injection port.

[0012] Preferably, two side walls of the die cutter are fixedly connected with positioning blocks, and a positioning groove for the positioning blocks to slide is provided inside the upper die base.

[0013] Beneficial Effects

[0014] The utility model provides an in-mold cutting and separation injection mold structure for curved surface injection molded parts. Compared with the prior art, it has the following beneficial effects:

[0015] Firstly, when the second gear plate of the utility model is driven downward along the slide groove inside the upper die base, the die-cutting knife connected to the second gear plate through the connecting block is driven downward to realize the die-cutting separation work, thereby ensuring that the die-cutting work is carried out while the upper die base is opened and closed by the hydraulic rod to take materials, and the die-cutting work is carried out while taking materials, which greatly improves the production efficiency, reduces the labor cost, and reduces the influence of human factors on product quality. The lifting and lowering of the hydraulic rod can be controlled to reciprocate the lifting and lowering of the die-cutting knife to perform the die-cutting work, thereby further improving the efficiency of die-cutting.

[0016] Secondly, when the telescopic rod is pushing, the utility model can realize the lifting and lowering of the support plate inside the mold cavity through the telescopic sleeve rod, so as to push the mold core, so as to carry out the material picking work, and combine the die cutting action with the material picking action, thereby realizing the automation of the mold in the cutting and material picking process and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper die base and the lower die base of the utility model;

[0019] Figure 3This is a schematic diagram of the reciprocating component connection structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the push plate connection structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the positioning groove of the utility model.

[0022] In the figure: 1. lower die base; 2. hydraulic rod; 3. upper die base; 4. die-cutting assembly; 401. movable cavity; 402. driving gear; 403. slide groove; 404. first gear plate; 405. second gear plate; 406. connecting block; 407. die-cutting knife; 5. material taking assembly; 501. push plate; 502. piston rod; 503. cavity tube; 504. telescopic cavity; 505. telescopic rod; 506. telescopic sleeve rod; 507. support plate; 508. circulation cavity; 6. mold cavity; 601. mold core; 7. first injection port; 701. second injection port; 8. positioning groove; 801. positioning block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in 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 in 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.

[0024] See also Figure 1-5 The utility model provides a technical solution: for the in-mold cutting and separation injection mold structure of curved surface injection molded parts, it includes a lower mold base 1, the four ends of the lower mold base 1 are fixedly connected with hydraulic rods 2, the telescopic end of the hydraulic rod 2 is fixedly connected with an upper mold base 3, and the lower mold base 1 and the upper mold base 3 are provided with a die cutting component 4 and a material taking component 5 for cutting and separation, and the upper mold base 3 is driven by the hydraulic rod 2 to rise and fall for opening and closing the molds;

[0025] The die-cutting assembly 4 includes an active cavity 401 provided inside the lower die base 1, the upper inner wall of the active cavity 401 is rotatably connected to a driving gear 402, a slide groove 403 is provided inside the upper die base 3, a first gear plate 404 is fixedly connected to the left inner wall of the slide groove 403, and the first gear plate 404 is meshingly connected to the driving gear 402, a second gear plate 405 is slidably connected inside the slide groove 403, and the second gear plate 405 is meshingly connected to the driving gear 402 and is symmetrically installed with respect to the first gear plate 404, a connecting block 406 is fixedly connected to the right side wall of the second gear plate 405, and a die-cutting knife 407 is fixedly connected to the end of the connecting block 406, and when the upper die base 3 is lifted or lowered, the first gear plate 404 is driven to lift or lower, so that the driving gear 402 rotates on the inner wall of the upper end of the active cavity 401, and at this time, the driving gear 402 is meshed with the second gear plate 405, so that the second gear plate 405 is driven downward along the slide groove 403 inside the upper die holder 3, and the die-cutting knife 407 connected to the second gear plate 405 through the connecting block 406 is driven downward to realize the die-cutting separation work, thereby ensuring that the die-cutting work is carried out while the upper die holder 3 is opened and closed by the hydraulic rod 2 to take the material, and the die-cutting work is carried out while taking the material, which greatly improves the production efficiency, reduces the labor cost, and reduces the influence of human factors on the product quality. In addition, the lifting and lowering of the hydraulic rod 2 can be controlled to reciprocate the lifting and lowering of the die-cutting knife 407 to perform the die-cutting work, further improving the efficiency of die-cutting;

[0026] The material taking assembly 5 includes a push plate 501 arranged at the lower end of the second gear plate 405 for driving the telescopic rod 505 to move.

[0027] The lower end of the push plate 501 is fixedly connected with a piston rod 502, the lower end of the active cavity 401 is fixedly connected with a cavity tube 503, and the piston rod 502 is located inside the active cavity 401. A circulation cavity 508 is opened inside the lower mold base 1 and is connected to the cavity tube 503. A telescopic cavity 504 is arranged at the end of the circulation cavity 508, and a telescopic rod 505 is arranged inside the telescopic cavity 504. When the second gear plate 405 is driven downward, the push plate 501 is controlled to be driven downward, so that the piston rod 502 is squeezed inside the cavity tube 503, so that the internal air is compressed and sent into the telescopic cavity 504 through the circulation cavity 508 for pressurization, so that the telescopic rod 505 can be telescoped inside the telescopic cavity 504.

[0028] In a preferred embodiment, the top of the telescopic rod 505 is fixedly connected to a support plate 507, and the four ends of the support plate 507 are connected to telescopic sleeve rods 506. When the telescopic rod 505 is pushing, the support plate 507 is lifted and lowered inside the mold cavity 6 through the telescopic sleeve rod 506, thereby pushing the mold core 601 to perform material removal. The die-cutting action is combined with the material removal action, thereby realizing the automation of the mold in the cutting and material removal process and improving production efficiency.

[0029] In a preferred embodiment, a first injection port 7 is provided at the upper end of the upper mold base 3, a second injection port 701 is provided inside the lower mold base 1 and is in a flow structure with the first injection port 7, a mold cavity 6 is provided at the inner center of the lower mold base 1, and a mold core 601 is provided inside the mold cavity 6. By setting four groups of first injection ports 7, the interior of the mold cavity 6 is evenly injected to ensure comprehensive filling of the curved injection molded part. The mold core 601 is located inside the mold cavity 6 to form the mold cavity 6 of the injection molded part.

[0030] In a preferred embodiment, the two side walls of the die-cutting knife 407 are fixedly connected with positioning blocks 801, and the interior of the upper mold base 3 is provided with positioning grooves 8 for the sliding of the positioning blocks 801. When the die-cutting knife 407 is set to perform the descending die-cutting work, the positioning blocks 801 fixed on both sides of the die-cutting knife 407 perform downward die-cutting work on the upper mold base 3 along the positioning grooves 8, thereby improving the stability during the die-cutting work.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] During operation, the material is uniformly injected into the mold cavity 6 through the first injection port 7. After molding, the upper mold base 3 is driven to rise and fall by the hydraulic rod 2 to open and close the molds. When the upper mold base 3 is raised and lowered, the first gear plate 404 is driven to rise and fall, so that the driving gear 402 rotates on the inner wall of the upper end of the active cavity 401. At this time, the driving gear 402 is meshed with the second gear plate 405, so that the second gear plate 405 is driven downward along the slide groove 403 inside the upper mold base 3, and the die cutter 407 connected to the second gear plate 405 through the connecting block 406 is driven downward to realize the die cutting separation work;

[0033] When the second gear plate 405 is driven downward, the push plate 501 is controlled to be driven downward, so that the piston rod 502 is squeezed inside the cavity tube 503, so that the internal air is compressed and sent into the telescopic cavity 504 through the circulation cavity 508 for pressurization, so that the telescopic rod 505 can be telescoped inside the telescopic cavity 504. When the telescopic rod 505 is pushing, the support plate 507 is lifted and lowered inside the mold cavity 6 through the telescopic sleeve rod 506, thereby pushing the mold core 601, thereby facilitating the material removal work.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold structure for cutting and separating curved surface injection molded parts, comprising a lower mold base (1), characterized in that: The four ends of the lower die base (1) are fixedly connected to hydraulic rods (2), the telescopic ends of the hydraulic rods (2) are fixedly connected to the upper die base (3), and the lower die base (1) and the upper die base (3) are provided with a die-cutting component (4) and a material-taking component (5) for cutting and separating. The die-cutting assembly (4) comprises an active cavity (401) provided inside the lower die base (1), the upper inner wall of the active cavity (401) being rotatably connected to a driving gear (402), a slide groove (403) being provided inside the upper die base (3), a first gear plate (404) being fixedly connected to the left inner wall of the slide groove (403), and the first gear plate (404) is meshingly connected to the driving gear (402), a second gear plate (405) being slidably connected inside the slide groove (403), and the second gear plate (405) is meshingly connected to the driving gear (402) and symmetrically installed with respect to the first gear plate (404), a connecting block (406) being fixedly connected to the right side wall of the second gear plate (405), and a die-cutting knife (407) being fixedly connected to the end of the connecting block (406); The material taking assembly (5) comprises a push plate (501) arranged at the lower end of the second gear plate (405) and used for driving the telescopic rod (505) to move.

2. The in-mold cutting and separation injection mold structure for curved surface injection molded parts according to claim 1, characterized in that: The lower end of the push plate (501) is fixedly connected to a piston rod (502), the lower end of the movable cavity (401) is fixedly connected to a cavity tube (503), and the piston rod (502) is located inside the movable cavity (401). A circulation cavity (508) connected to the cavity tube (503) is provided inside the lower mold base (1), a telescopic cavity (504) is provided at the end of the circulation cavity (508), and a telescopic rod (505) is provided inside the telescopic cavity (504).

3. The in-mold cutting and separation injection mold structure for curved surface injection molded parts according to claim 2, characterized in that: The top end of the telescopic rod (505) is fixedly connected to a support plate (507), and the four ends of the support plate (507) are connected to telescopic sleeve rods (506).

4. The in-mold cutting and separation injection mold structure for curved surface injection molded parts according to claim 1, characterized in that: A mold cavity (6) is provided at the inner center of the lower mold base (1), and a mold core (601) is provided inside the mold cavity (6).

5. The in-mold cutting and separation injection mold structure for curved surface injection molded parts according to claim 1, characterized in that: The upper end of the upper mold base (3) is provided with a first injection port (7), and the interior of the lower mold base (1) is provided with a second injection port (701) which is in a flow-through structure with the first injection port (7).

6. The in-mold cutting and separation injection mold structure for curved surface injection molded parts according to claim 1, characterized in that: The two side walls of the die cutter (407) are fixedly connected with positioning blocks (801), and the interior of the upper die base (3) is provided with positioning grooves (8) for the positioning blocks (801) to slide.

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