Injection mold

Abstract

The utility model discloses an injection mold which comprises a mold body provided with a mold cavity, sliding grooves are formed in the right side and the right side wall of the top of the mold cavity, and an injection molding hole is formed in the right side of the top of the mold cavity. And the cutting sealing plate is inserted into an inner cavity of the sliding groove, and a cutting material flowing hole is formed in the top of the cutting sealing plate. Through the design and use of the cutting sealing plate, the blade-shaped cutting flow hole, the gear cylinder, the wheel disc and the rack, when injection molding production is carried out, especially after injection molding is completed, the cutting sealing plate is directly operated, redundant positions of an injection molding hole are cut off and cut off through the blade-shaped cutting flow hole in the cutting sealing plate, and a product which can be delivered after demolding can be achieved; the problems that in an existing production scheme, a flow process needs to be additionally arranged for special treatment, the production cost is increased, and meanwhile the production efficiency is affected are effectively solved.

Description

Technical Field

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

[0002] Injection molding is a product shaping method for industrial manufacturing. It usually uses plastic injection molding and plastic injection molding. The equipment used in conjunction with the injection molding production method is the injection mold, which is to pour the molten plastic or plastic into the mold, wait for it to be formed, and then open the mold to get the corresponding shape of the product.

[0003] When using injection molds, there are various problems, such as mold disassembly and assembly, cooling speed, product stickiness, and excess parts at the injection port. The above-mentioned problems are common problems in the production and manufacturing process of injection molds. Among them, the problem of excess parts at the injection port requires secondary processing in the production process, that is, the molded product is taken out after demoulding, and then sent to other equipment to remove scraps and burrs. This operation method of removing excess parts of the injection port is a common method in our injection molding production field. In the long-term production process, there are two operation methods for removing excess parts of the injection port. One is manual cutting, and the other is to rely on special cutting equipment. The manual operation method not only requires manual input, but also its efficiency and quality cannot be well controlled. The use of special cutting equipment also has corresponding problems. The investment in cutting equipment, daily operation and maintenance work, and the addition of assembly lines all affect the production cost of normal production.

[0004] Therefore, we propose a mold for injection molding production to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an injection mold to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An injection mold, comprising:

[0008] A mold is provided with a mold cavity, a sliding groove is provided on the right side of the top of the mold cavity and on the right side wall, and an injection hole is provided on the right side of the top of the mold cavity.

[0009] A cutting sealing plate is inserted into the inner cavity of the sliding groove, and a cutting flow hole is opened on the top of the cutting sealing plate.

[0010] Preferably, the cutting flow hole is located directly below the injection hole, the two are on the same central axis, and are equal in size, and the inner side wall of the cutting flow hole is in the shape of a blade.

[0011] Preferably, it also includes a side bracket plate, which is fixedly welded on the side of the mold, and the two side bracket plates are respectively located on both sides of the sliding groove.

[0012] Preferably, the device further comprises a limiting slideway provided on the inner wall of the sliding groove, and the inner cavity of the limiting slideway is provided with a tension spring.

[0013] Preferably, a rack is provided at the top of the cutting sealing plate located on the outer part of the mold, and limiting protrusions are provided on both sides of the bottom of the cutting sealing plate. The limiting protrusions are inserted into the inner cavity of the limiting slide and are in compression contact with the tensioning spring.

[0014] Preferably, a gear cylinder is installed between the two side bracket plates via a bearing and a rotating shaft, and the gear cylinder is meshed with a rack, and both ends of the rotating shaft for installing the gear cylinder are fitted with wheel discs.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The injection mold, through the design and use of the cutting sealing plate, the blade-shaped cutting flow hole, the gear barrel, the wheel disc and the rack, during the injection molding production, especially after the injection molding is completed, the cutting sealing plate is directly operated to allow the blade-shaped cutting flow hole on it to cut off the redundant position of the injection hole, so that the product can be shipped out of the factory after demoulding, which effectively solves the problem that the existing production plan needs to add a process technology for special processing, which increases the production cost and affects the production efficiency.

[0017] 2. When the injection mold is cutting off and removing the excess part of the injection port, the movement of the cutting sealing plate can also drive the air circulation inside and outside the mold, that is, realize heat exchange and accelerate the cooling of the injection molded product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a cross-sectional view of the mold of the utility model;

[0020] Figure 3 This is an overall cross-sectional view of the utility model;

[0021] Figure 4 Utility Model Figure 3 A magnified view of the structure at center;

[0022] Figure 5This is a schematic diagram of the structure of the cutting sealing plate of the utility model.

[0023] In the figure: 1. mold; 2. mold cavity; 3. sliding groove; 4. cut sealing plate; 5. side support plate; 6. tension spring; 7. limit protrusion; 9. gear cylinder; 10. wheel disc; 11. rack; 12. injection hole; 13. cut flow hole. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1:

[0026] An injection mold, comprising:

[0027] A mold 1 is provided with a mold cavity 2, a sliding groove 3 is provided on the right side of the top of the mold cavity 2 and on the right side wall, and an injection hole 12 is provided on the right side of the top of the mold cavity 2;

[0028] The cutting sealing plate 4 is inserted into the inner cavity of the sliding groove 3, and a cutting flow hole 13 is opened on the top of the cutting sealing plate 4.

[0029] Furthermore, the cutting flow hole 13 is located directly below the injection hole 12 , the two are on the same central axis and are equal in size, and the inner side wall of the cutting flow hole 13 is in the shape of a blade.

[0030] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the mold 1 is divided into two parts, an upper mold and a lower mold. The mold 1 structure of the present technical solution is one of the upper mold or the lower mold. Of course, it must be a mold with a cavity 2 structure to facilitate the addition of various structures.

[0031] In actual use, the mold 1 is closed and assembled with the other half, and the fluid raw material is injected into the inner cavity of the mold 1 through the injection hole 12, and waited for it to cool and form. Before opening and separating the injection mold 1, the cutting sealing plate 4 is operated to allow the blade-shaped cutting flow hole 13 to cut and cut off the protruding part between the injection hole 12 and the shaped product, that is, the protruding part at the position of the injection hole 12 of the shaped product is cut off before the mold is opened. In this way, the mold can be opened to obtain a product that can be used or packaged for shipment, and there is no need to carry out subsequent process steps for removing excess parts. While shortening the time for product manufacturing and shipment, it can also greatly reduce the cost investment in injection molding production, both economically and humanly.

[0032] Embodiment 2:

[0033] An injection mold further comprises a side support plate 5 , which is fixedly welded on the side surface of the mold 1 , and two side support plates 5 are respectively located on both sides of the sliding groove 3 .

[0034] Furthermore, a rack 11 is provided at the top of the cutting sealing plate 4 located on the outer part of the mold 1, and a gear cylinder 9 is installed between the two side bracket plates 5 through bearings and a rotating shaft, and the gear cylinder 9 is meshed with the rack 11, and both ends of the rotating shaft for installing the gear cylinder 9 are equipped with a wheel disc 10.

[0035] In this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the wheel 10 is located on both sides of the cutting sealing plate 4. When operating to cut off the excess protrusions of injection molding, the wheel 10 is rotated. The wheel 10 drives the gear barrel 9 to rotate through the rotating shaft. When the gear barrel 9 rotates, the cutting sealing plate 4 is driven to be pulled out to the outside of the mold 1 through the rack 11. When the cutting sealing plate 4 is pulled out, its blade-shaped cutting flow hole 13 will move closely against the surface of the product to cut off the excess injection molding part. Through the design of the turntable 10, the gear barrel 9 and the rack 11, it is possible to achieve labor-saving and operating speed in cutting off the excess injection molding part. It should be additionally explained that when cutting off the excess injection molding part, the desired part has a certain temperature, and is not in a completely cooled and hard state, so that the cutting and cutting operation can be easily achieved.

[0036] Embodiment 3:

[0037] An injection mold further comprises a limiting slideway provided on the inner wall of a sliding groove 3, wherein a tension spring 6 is arranged in the inner cavity of the limiting slideway.

[0038] Furthermore, limiting protrusions 7 are provided on both sides of the bottom of the cut sealing plate 4 . The limiting protrusions 7 are inserted into the inner cavity of the limiting slideway and are in compression contact with the tension spring 6 .

[0039] In this embodiment, Figure 3 and Figure 4 As shown, the bottom of the cut sealing plate 4 is in contact with the top of the tensioning spring 6, and the inner width of the limiting slide is close to the diameter of the tensioning spring 6, so that the tensioning spring 6 can only undergo compression and rebound deformation actions. The design of the tensioning spring 6 is based on Examples 1 and 2. When the cut sealing plate 4 moves, the tensioning spring 6 is compressed by the limiting protrusion 7 at its bottom. When the cutting work is completed, the tensioning spring 6 can quickly reset the cut sealing plate 4, and during the injection molding process, the tensioning spring 6 can also squeeze the cut sealing plate 4 to ensure that it is in a sealed state in the mold 1.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Although 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, characterized in that: include: A mold (1) is provided with a mold cavity (2), a sliding groove (3) is provided on the right side of the top of the mold cavity (2) and on the right side wall, and an injection hole (12) is provided on the right side of the top of the mold cavity (2); A cutting sealing plate (4) is inserted into the inner cavity of the sliding groove (3), and a cutting flow hole (13) is provided on the top of the cutting sealing plate (4).

2. An injection mold according to claim 1, characterized in that: The cutting flow hole (13) is located directly below the injection hole (12), the two are on the same central axis and are equal in size, and the inner side wall of the cutting flow hole (13) is in the shape of a blade.

3. An injection mold according to claim 1, characterized in that: It also comprises a side support plate (5), wherein the side support plate (5) is fixedly welded on the side surface of the mould (1), and the two side support plates (5) are respectively located on the two sides of the sliding groove (3).

4. The injection mold according to claim 1, characterized in that: It also comprises a limiting slideway provided on the inner wall of the sliding groove (3), wherein the inner cavity of the limiting slideway is provided with a tension spring (6).

5. The injection mold according to claim 1, characterized in that: The cutting sealing plate (4) is provided with a rack (11) at the top of the outer part of the mold (1), and limiting protrusions (7) are provided on both sides of the bottom of the cutting sealing plate (4). The limiting protrusions (7) are inserted into the inner cavity of the limiting slide and are in compression contact with the tensioning spring (6).

6. The injection mold according to claim 3, characterized in that: A gear cylinder (9) is installed between the two side bracket plates (5) via a bearing and a rotating shaft, and the gear cylinder (9) is meshed with a rack (11). Wheel discs (10) are mounted on both ends of the rotating shaft for installing the gear cylinder (9).

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