Injection mold for producing plastic shell

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold for producing plastic shells, including a buffer mechanism, including a buffer cylinder fixedly arranged on the inner wall of a bracket, a push rod inserted and arranged on the outer wall of the buffer cylinder, a positioning groove opened on the inner side of the buffer cylinder, a buffer block slidably connected to the inner wall of the positioning groove, a fixed shaft fixedly connected to the inner end of the buffer block, a push rod movably installed on the inner wall of the fixed shaft, a fixed groove opened on the inner wall of the positioning groove, a first spring arranged in the inner cavity of the fixed groove, a connecting groove opened in the inner cavity of the fixed shaft, a second spring arranged in the inner cavity of the connecting groove, and a sliding mechanism arranged on the upper ends of the first mold base and the second mold base. The utility model solves the problem that the plastic shell needs to be manually taken after the plastic mold is demoulded, the degree of automation is not high, and the impact is high.

Description

Technical Field

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

[0002] Injection molding is a tool for producing plastic products. It provides complete structures and precise dimensions for plastic products. Usually, portable shells are made of PC plastic as the main material. During the manufacturing process, the plastic is injected into the mold cavity, cooled and hardened to obtain molded parts. As we all know, injection molds are a tool for producing plastic products. They are mainly used for mass production of some parts with complex shapes. With the rapid development of the plastic industry, molds have been widely used. The existing injection molds used in the production of plastic shells require the powerful thrust of the injection machine to demold the plastic, so that the plastic suddenly expands at the end of the oil pipe and the end of the oil pipe is stretched outward. Only then can the plastic be ejected from the mold, and the plastic shell needs to be manually taken out, which requires manual intervention in the operation, and only semi-automatic demolding is achieved, affecting production efficiency. In view of this, we propose an injection mold for the production of plastic shells to solve the above problems. Utility Model Content

[0003] The utility model aims to provide an injection mold for producing a plastic shell, so as to solve the problem that the plastic shell needs to be manually taken out after the plastic mold is demoulded in the above-mentioned background technology, and the degree of automation is not high.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold for producing a plastic shell, comprising a bracket, wherein a clamping mechanism is provided on the inner side of the bracket, wherein the clamping mechanism comprises four guide rods arranged on the inner side wall of the bracket, a first mold base slidably connected to one side of the outer side wall of the guide rod, a second mold base slidably arranged on the other end of the guide rod away from the first mold base, and a buffer mechanism arranged at the middle position of the outer side walls of the first mold base and the second mold base;

[0005] The buffer mechanism comprises a buffer cylinder fixedly arranged on the inner wall of the bracket, a push rod insertedly arranged on the outer wall of the buffer cylinder, a positioning groove provided on the inner side of the buffer cylinder, a buffer block slidably connected to the inner wall of the positioning groove, a fixed shaft fixedly connected to the inner end of the buffer block, a push rod movably installed on the inner wall of the fixed shaft, a fixed groove provided on the inner wall of the positioning groove, a first spring provided in the inner cavity of the fixed groove, a connecting groove provided in the inner cavity of the fixed shaft, a second spring arranged in the inner cavity of the connecting groove, and a sliding mechanism provided on the upper ends of the first die base and the second die base;

[0006] The sliding mechanism includes a motor connected to the outside of the bracket, a bidirectional screw connected to the output end of the motor, a bearing rotatably connected to the top of the bidirectional screw, a first slider slidably arranged on the outer edge of the bidirectional screw, and a second slider arranged on the outer edge of the bidirectional screw away from the other end of the first slider.

[0007] Preferably, the push rod is plugged into the connecting groove, the push rod is fitted with the second spring, the fixed shaft is slidably arranged in the fixed groove, and the buffer block is slidably arranged in the positioning groove.

[0008] Preferably, two buffer cylinders are provided, and the inner top of the support rod is connected to the outer side walls of the first mold base and the second mold base.

[0009] Preferably, the bottom of the first sliding block is connected to the upper end of the first mold base, the bottom of the second sliding block is connected to the second mold base, a concave mold is provided on the outer side of the first mold base, and a convex mold is provided on the inner side of the second mold base.

[0010] Preferably, a T-shaped slide groove is provided at the bottom of the bracket, and the upper ends of the first slider and the second slider are connected with a T-shaped slider, and the T-shaped slider is slidably connected to the T-shaped slide groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a buffer mechanism, which can further drive the bidirectional lead screw at the output end by driving the electric spindle of the motor, and drives the first slider and the second slider on the outer edge to drag the sliding process of the first mold base and the second mold base, so that the concave mold and the convex mold on the first mold base and the second mold base can be demolded, and the first mold base and the second mold base are horizontally arranged and distributed, so that after the demolding is completed, the mold falls due to the influence of gravity, which greatly improves the automated demolding process and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an injection mold for producing a plastic shell according to the utility model;

[0014] Figure 2 This is a structural analysis diagram of a buffer mechanism of an injection mold for producing a plastic shell according to the utility model;

[0015] Figure 3 This is an enlarged schematic diagram of structure A of an injection mold for producing a plastic shell of the utility model;

[0016] Figure 4 The utility model is a bottom bottom view of a sliding mechanism structure of an injection mold for producing a plastic shell.

[0017] In the figure: 1. bracket; 2. guide rod; 3. buffer cylinder; 4. first die base; 5. die; 6. second die base; 7. motor; 8. push rod; 9. positioning groove; 10. buffer block; 11. fixed shaft; 12. second spring; 13. push rod; 14. first spring; 15. connecting groove; 16. bidirectional lead screw; 17. bearing; 18. first slider; 19. second slider; 20. T-shaped slider; 21. T-shaped slide groove. DETAILED DESCRIPTION

[0018] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0022] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below with reference to the accompanying drawings for an injection mold for producing a plastic shell.

[0024] Example: Refer to Figure 1-Figure 4 The utility model provides an injection mold for producing a plastic shell, comprising a bracket 1, a clamping mechanism is arranged on the inner side of the bracket 1, and the clamping mechanism comprises four guide rods 2 arranged on the inner side wall of the bracket 1, a first mold base 4 slidably connected to one side of the outer side wall of the guide rod 2, a second mold base 6 slidably arranged on the other end of the guide rod 2 away from the first mold base 4, and a buffer mechanism arranged at the middle position of the outer side walls of the first mold base 4 and the second mold base 6;

[0025] The buffer mechanism includes a buffer cylinder 3 fixedly arranged on the inner wall of the bracket 1, a push rod 8 inserted and arranged on the outer wall of the buffer cylinder 3, a positioning groove 9 opened on the inner side of the buffer cylinder 3, a buffer block 10 slidably connected to the inner wall of the positioning groove 9, a fixed shaft 11 fixedly connected to the inner end of the buffer block 10, a push rod 13 movably installed on the inner wall of the fixed shaft 11, a fixed groove opened on the inner wall of the positioning groove 9, a first spring 14 arranged in the inner cavity of the fixed groove, a connecting groove 15 opened in the inner cavity of the fixed shaft 11, a second spring 12 arranged in the inner cavity of the connecting groove 15, and a sliding mechanism arranged on the upper ends of the first mold base 4 and the second mold base 6;

[0026] The sliding mechanism includes a motor 7 connected to the outside of the bracket 1, a bidirectional screw 16 connected to the output end of the motor 7, a bearing 17 rotatably connected to the top of the bidirectional screw 16, a first slider 18 slidably arranged on the outer edge of the bidirectional screw 16, and a second slider 19 arranged on the outer edge of the bidirectional screw 16 away from the other end of the first slider 18.

[0027] The push rod 13 is inserted into the connecting groove 15 , the push rod 13 is fitted with the second spring 12 , the fixed shaft 11 is slidably arranged in the fixed groove, and the buffer block 10 is slidably arranged in the positioning groove 9 .

[0028] There are two buffer cylinders 3 , and the inner top of the push rod 8 is connected to the outer side walls of the first mold base 4 and the second mold base 6 .

[0029] The bottom of the first slider 18 is connected to the upper end of the first die base 4 , the bottom of the second slider 19 is connected to the second die base 6 , a concave die 5 is provided on the outer side of the first die base 4 , and a convex die is provided on the inner side of the second die base 6 .

[0030] Wherein: a T-shaped slide groove 21 is opened at the bottom of the bracket 1, and a T-shaped slide block 20 is connected to the upper ends of the first slide block 18 and the second slide block 19, and the T-shaped slide block 20 is slidably connected with the T-shaped slide groove 21.

[0031] Working principle of the embodiment of the utility model: This is an injection mold for producing plastic shells. When in use, the bidirectional lead screw 16 at the output end can be driven to rotate under the drive of the electric spindle of the motor 7, so that the first slider 18 and the second slider 19 on the outer edge of the bidirectional lead screw 16 can move toward each other, thereby driving the sliding of the first mold base 4 and the second mold base 6 connected at the bottom. The first mold base 4 and the second mold base 6 are configured in the same way, and a concave mold 5 and a convex mold are provided on the opposite side. The injection molding machine syringe can work to inject the external molten raw material into the gap between the concave mold 5 and the convex mold, and after cooling, the motor 7 can be controlled to make the first slider 18 and the second slider 19 on the bidirectional lead screw 16 drag the first mold base 4 and the second mold base 6 at the bottom to move toward each other. When the workpiece moves in the direction away from the piston, the external push rod 8 will shrink inward, and the buffer block 10 connected to the inner end can slide in the positioning groove 9 opened in the buffer tube 3, thereby driving the fixed shaft 11 connected to the inner wall to further shrink into the fixed groove. The first spring 14 provided in the fixed groove can form a compressed state at this time to alleviate the buffering of the external force. At the same time, when a certain compression state is reached, the ejector rod 13 slidably installed in the fixed shaft 11 can meet the second spring 12 in the connecting groove 15 to form reverse compression, which greatly improves the buffering performance of the device structure and ensures that the workpiece can maintain balanced force during the ejection process. The ejected workpiece can fall downward due to gravity, and a containing bucket can be provided at the bottom to collect the workpiece to complete the operation.

[0032] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An injection mold for producing a plastic shell, characterized in that: include: A bracket (1), wherein a clamping mechanism is provided on the inner side of the bracket (1), wherein the clamping mechanism comprises four guide rods (2) arranged on the inner side wall of the bracket (1), a first mold base (4) slidably connected to one side of the outer side wall of the guide rod (2), a second mold base (6) slidably arranged on the other end of the guide rod (2) away from the first mold base (4), and a buffer mechanism arranged at the middle position of the outer side walls of the first mold base (4) and the second mold base (6); The buffer mechanism comprises a buffer cylinder (3) fixedly arranged on the inner wall of a bracket (1), a push rod (8) inserted and arranged on the outer wall of the buffer cylinder (3), a positioning groove (9) provided on the inner side of the buffer cylinder (3), a buffer block (10) slidably connected to the inner wall of the positioning groove (9), a fixed shaft (11) fixedly connected to the inner end of the buffer block (10), a push rod (13) movably mounted on the inner wall of the fixed shaft (11), a fixed groove provided on the inner wall of the positioning groove (9), a first spring (14) provided in the inner cavity of the fixed groove, a connecting groove (15) provided in the inner cavity of the fixed shaft (11), a second spring (12) arranged in the inner cavity of the connecting groove (15), and a sliding mechanism provided on the upper ends of the first mold base (4) and the second mold base (6); The sliding mechanism comprises a motor (7) connected to the outside of the bracket (1), a bidirectional lead screw (16) connected to the output end of the motor (7), a bearing (17) rotatably connected to the top of the bidirectional lead screw (16), a first sliding block (18) slidably arranged on the outer edge of the bidirectional lead screw (16), and a second sliding block (19) arranged at the other end of the outer edge of the bidirectional lead screw (16) away from the first sliding block (18).

2. The injection mold for producing a plastic shell according to claim 1, characterized in that: The push rod (13) is plugged into the connecting groove (15), the push rod (13) is fitted with the second spring (12), the fixed shaft (11) is slidably arranged in the fixed groove, and the buffer block (10) is slidably arranged in the positioning groove (9).

3. The injection mold for producing a plastic shell according to claim 1, characterized in that: Two buffer cylinders (3) are arranged, and the inner top of the support rod (8) is movably connected to the outer side walls of the first mold base (4) and the second mold base (6).

4. The injection mold for producing a plastic shell according to claim 1, characterized in that: The bottom of the first sliding block (18) is connected to the upper end of the first die base (4), the bottom of the second sliding block (19) is connected to the second die base (6), a concave die (5) is provided on the outer side of the first die base (4), and a convex die is provided on the inner side of the second die base (6).

5. The injection mold for producing a plastic shell according to claim 1, characterized in that: The bottom of the bracket (1) is provided with a T-shaped slide groove (21); the upper ends of the first slide block (18) and the second slide block (19) are connected with a T-shaped slide block (20); and the T-shaped slide block (20) is slidably connected with the T-shaped slide groove (21).

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