Compact ejector pin mechanism for injection machine

Abstract

The utility model discloses a compact ejector pin mechanism for an injection machine. The compact ejector pin mechanism comprises a bottom plate, a lower template and an upper template, the top end of the bottom plate is fixedly connected with a lower die plate through a fixing column, a lifting rod is fixedly installed at the bottom end of the bottom plate, the output end of the lifting rod is fixedly connected with a lifting rod, the top end of the lifting rod is rotationally connected with a gear, the bottom end of the lower die plate is fixedly connected with a fixing toothed bar, and the lower die plate is slidably connected with an ejector pin. The stroke is prolonged by adopting the fixed toothed bar, the movable toothed bar and the gear, when an injection molding part needs to be ejected out, the air cylinder is started to drive the gear to rotate through the lifting rod, the gear is in meshed connection with the fixed toothed bar, so that the gear rotates anticlockwise, the gear rotates anticlockwise to drive the movable toothed bar to move upwards, and the injection molding part is ejected out. Compared with an existing ejector pin mechanism, the long-distance ejection mechanism has the advantages that the stroke of the ejector pin can be increased, and long-distance ejection can be realized in a compact space.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a compact ejector mechanism for an injection machine. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of injection molding are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into complex-shaped parts. Injection molding is suitable for mass production and complex-shaped products and other molding and processing fields.

[0003] In the prior art, the injection molded parts are demolded by ejecting them with an ejector pin. However, for some special-shaped parts, the stroke of the ejector pin needs to be increased. The traditional method is to use a cylinder with a long stroke to eject them. However, a cylinder with a larger stroke cannot be installed in the narrow injection molding machine, resulting in the inability to remove the material. The material can only be removed manually, which is inefficient.

[0004] Therefore, how to provide a compact ejector mechanism for an injection molding machine to solve the problems existing in the prior art is of great significance to its application. Utility Model Content

[0005] In view of this, the purpose of the present application is to provide a compact ejector mechanism for an injection molding machine to solve the problem in the prior art that the molded parts are demoulded by ejecting them through an ejector, but for some special-shaped parts, it is necessary to increase the stroke of the ejector. The traditional method is to use a cylinder with a long stroke to eject them, but a cylinder with a larger stroke cannot be installed in the narrow injection molding machine, resulting in the inability to remove the material, and the material can only be removed manually, which is inefficient.

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

[0007] A compact ejector mechanism for an injection molding machine comprises a base plate, a lower mold plate and an upper mold plate;

[0008] The top of the base plate is fixedly connected to the lower template through a fixed column, the bottom end of the base plate is fixedly installed with a lifting rod, the output end of the lifting rod is fixedly connected to the lifting rod, the top of the lifting rod is rotatably connected to a gear, the bottom end of the lower template is fixedly connected to a fixed gear rod, the lower template is slidably connected to a ejector pin, the bottom end of the ejector pin is fixedly connected to a movable gear rod, the movable gear rod and the fixed gear rod are both meshed with the gear, and the upper template is located above the lower template.

[0009] Preferably, the movable gear rod and the fixed gear rod are parallel to each other, and the fixed gear rod and the movable gear rod are symmetrically arranged on both sides of the gear.

[0010] Preferably, the top end of the lower mold plate is a mold core, and the top end of the ejector pin is flush with the surface of the mold core.

[0011] Preferably, a mold groove is provided at the bottom end of the upper mold plate, and the mold groove is adapted to the mold core.

[0012] Preferably, a groove is formed at the top of the bottom plate, and the groove is matched with the fixed gear rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a fixed gear rod, a movable gear rod and a gear to extend the stroke. When the injection molded part needs to be ejected, the cylinder is started to drive the gear to rotate through the lifting rod. Since the gear and the fixed gear rod are meshed and connected, the gear rotates counterclockwise. The counterclockwise rotation of the gear drives the movable gear rod to move upward, thereby driving the ejector pin to be ejected upward. Compared with the existing ejector pin mechanism, the utility model can increase the ejector pin stroke and realize long-distance ejection in a compact space.

[0015] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application so that it can be implemented in accordance with the contents of the specification, and to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings as follows.

[0016] Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

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

[0019] Figure 2 It is a schematic diagram of the structure of the utility model during jacking.

[0020] In the figure: 1. bottom plate; 2. cylinder; 3. lifting rod; 4. movable gear rod; 5. fixed column; 6. lower template; 7. fixed gear rod; 8. gear; 9. upper template; 10. ejector pin. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, rather than all of the embodiments. In the following description, specific details such as specific configuration and components are provided only to help fully understand the embodiments of the present application. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, for clarity and brevity, the description of known functions and structures is omitted in the embodiment.

[0022] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0023] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0024] It should also 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", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0025] See also Figure 1-2 , the present invention provides a technical solution of a compact ejector mechanism for an injection molding machine: comprising a base plate 1, a lower mold plate 6 and an upper mold plate 9;

[0026] The top of the base plate 1 is fixedly connected to the lower template 6 through a fixed column 5, a lifting rod 3 is fixedly installed on the bottom end of the base plate 1, the output end of the lifting rod 3 is fixedly connected to the lifting rod 3, the top of the lifting rod 3 is rotatably connected to a gear 8, the bottom end of the lower template 6 is fixedly connected to a fixed gear rod 7, the lower template 6 is slidably connected to an ejector pin 10, the bottom end of the ejector pin 10 is fixedly connected to a movable gear rod 4, the movable gear rod 4 and the fixed gear rod 7 are both meshed with the gear 8, and the upper template 9 is located above the lower template 6.

[0027] The movable gear rod 4 and the fixed gear rod 7 are parallel to each other, and the fixed gear rod 7 and the movable gear rod 4 are symmetrically arranged on both sides of the gear 8 .

[0028] The top of the lower mold plate 6 is a mold core, and the top of the ejector pin 10 is flush with the surface of the mold core.

[0029] The bottom end of the upper mold plate 9 is provided with a mold groove, which is adapted to the mold core.

[0030] A groove 11 is provided at the top of the bottom plate 1 , and the groove 11 is matched with the fixed gear rod, so that the movable gear rod 4 can be inserted into the groove 11 when descending, thereby saving space.

[0031] During specific use, the cylinder 2 is started to drive the gear 8 to rotate through the lifting rod 3. Since the gear 8 and the fixed gear rod 7 are meshed and connected, the gear 8 rotates counterclockwise. The counterclockwise rotation of the gear 8 drives the movable gear rod 4 to move upward, thereby driving the ejector pin 10 to be ejected upward. When the mold is closed, the cylinder 2 drives the gear 8 to descend through the lifting rod 3. At this time, the gear 8 rotates clockwise and drives the movable gear rod 4 to descend, thereby realizing the retraction of the ejector pin 10. Compared with the existing ejector pin mechanism, the utility model can increase the ejector pin stroke and realize long-distance ejection in a compact space.

[0032] The above description is only the preferred embodiment of the utility model, which does not limit the protection scope of the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any changes, modifications, substitutions, integrations and parameter changes to these embodiments within the spirit and principle of the utility model through conventional substitutions or capable of achieving the same functions without departing from the principles and spirit of the utility model shall fall within the protection scope of the utility model.

Claims

1. A compact ejector mechanism for an injection molding machine, characterized in that: It comprises a base plate (1), a lower template (6) and an upper template (9); The top of the base plate (1) is fixedly connected to the lower template (6) through a fixed column (5); a lifting rod (3) is fixedly installed at the bottom end of the base plate (1); the output end of the lifting rod (3) is fixedly connected to the lifting rod (3); the top of the lifting rod (3) is rotatably connected to a gear (8); the bottom end of the lower template (6) is fixedly connected to a fixed toothed rod (7); the lower template (6) is slidably connected to an ejector pin (10); the bottom end of the ejector pin (10) is fixedly connected to a movable toothed rod (4); the movable toothed rod (4) and the fixed toothed rod (7) are both meshedly connected to the gear (8); and the upper template (9) is located above the lower template (6).

2. A compact ejector mechanism for an injection molding machine as claimed in claim 1, characterized in that: The movable gear rod (4) and the fixed gear rod (7) are parallel to each other, and the fixed gear rod (7) and the movable gear rod (4) are symmetrically arranged on both sides of the gear (8).

3. A compact ejector mechanism for an injection molding machine as claimed in claim 2, characterized in that: The top end of the lower mold plate (6) is a mold core, and the top end of the ejector pin (10) is flush with the surface of the mold core.

4. A compact ejector mechanism for an injection molding machine as claimed in claim 3, characterized in that: The bottom end of the upper mold plate (9) is provided with a mold groove, and the mold groove is adapted to the mold core.

5. A compact ejector mechanism for an injection molding machine as claimed in claim 3, characterized in that: A groove (11) is provided at the top end of the bottom plate (1), and the groove (11) is adapted to fit the fixed gear rod.

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