Built-in ejection oil cylinder for two-plate injection molding machine template

Abstract

The utility model discloses a built-in ejection oil cylinder for a template of a two-plate injection molding machine, which relates to the technical field of ejection oil cylinders of injection molding machines and comprises a template main body, an ejection rear cover is movably mounted on one side of the template main body, one end of the ejection rear cover is fixedly connected with a positioning bump, the positioning bump is inserted into the template main body, and the positioning bump is fixedly connected with the template main body. According to the utility model, the ejection oil cylinder body is arranged inside the template main body, the ejection piston rod pushes the contact plate during use, and the contact plate is mounted on an injection molding machine, so that the reaction force of the injection molding machine to the contact plate can promote the template to move; the purpose of pushing the mold plate to move is achieved, the length of the two-plate injection molding machine is further shortened by arranging the ejection oil cylinder body in the mold plate main body, large-scale deployment is facilitated, and meanwhile the influence of the external environment on the ejection oil cylinder body can be reduced through the built-in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of ejector oil cylinders for injection molding machines, in particular to a built-in ejector oil cylinder for a template of a two-plate injection molding machine. Background Art

[0002] The two-platen injection molding machine is a device used for plastic molding. It is mainly used to heat the plastic raw materials to a molten state, then inject them into the mold under high pressure, and form the desired plastic products after cooling.

[0003] For example, publication number CN202037821U discloses an ejector cylinder device for an injection molding machine, which is arranged on a movable template, and includes a cylinder cover, a piston rod, a cylinder barrel, an ejector plate, an oil-passing body and an ejector rod. Two inner holes are horizontally penetrated through the ejector plate, and a cylinder barrel is installed in each inner hole of the ejector plate. A piston rod is penetrated through the cylinder barrel, and the outer wall of the piston rod is slidably matched with the inner wall of the cylinder barrel. Washers, guide sleeves and cylinder covers are sequentially mounted on two places of the piston rod near the ejector plate. The cylinder cover is fastened to the ejector plate by screws, one end of the piston rod is fastened to the movable template by a nut and a pressure cover, and the other end of the piston rod is provided with an oil-passing body. One end of the ejector rod passes through the through hole of the movable template, and the other end is fastened to the through hole of the ejector plate.

[0004] However, in the existing technology, the ejector cylinder used in traditional and two-platen injection molding machine templates is usually installed on the surface of the machine. The external ejector cylinder will cause the overall length of the device to become longer, occupying more space in the factory, making it impossible to deploy on a large scale. In addition, the external state will also make the ejector cylinder more susceptible to interference from the external environment. Both high and low temperatures will affect the normal operation of the ejector cylinder. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that an external ejection cylinder causes the overall length of the device to become longer, occupies more space in the factory, and makes it impossible to deploy on a large scale, and a built-in ejection cylinder for a two-plate injection molding machine template is proposed.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a built-in ejector cylinder for a two-plate injection molding machine template, comprising a template body, an ejector rear cover movably mounted on one side of the template body, one end of the ejector rear cover fixedly connected to a positioning protrusion, the positioning protrusion being inserted into the interior of the template body, the other end of the ejector rear cover fixedly connected to an ejector cylinder body, the other end of the ejector cylinder body fixedly connected to an ejector front cover, an ejector piston rod slidably connected to the interior of the ejector front cover, the other end of the ejector piston rod fixedly connected to a contact plate, and the contact plate fixedly connected to the injection molding machine.

[0007] Preferably, a blocking rod is fixedly connected to one side of the template body, and one end of the blocking rod is pressed against one side of the contact plate.

[0008] Preferably, an ejection piston is fixedly mounted at the junction of the ejection piston rod and the ejection oil cylinder body, and a joint is fixedly mounted on one side of the ejection front cover.

[0009] Preferably, a clamping assembly is movably installed at the junction of the template body and the ejection rear cover, and the clamping assembly includes a rotating rod, and the rotating rod is located at the edge of the ejection rear cover.

[0010] Preferably, one end of the rotating rod is fixedly connected to a threaded rod, and an annular groove is provided at the intersection of the rotating rod and the threaded rod.

[0011] Preferably, the other end of the threaded rod is threadedly connected to a threaded barrel, and one end of the threaded barrel is fixedly connected to a triangular block.

[0012] Preferably, the triangular block is inserted into the interior of the ejector rear cover, and a slot is provided at the junction of the ejector rear cover and the threaded barrel.

[0013] Preferably, a limit plate is fixedly mounted on one side of the template body, the rotating rod is rotatably mounted inside the limit plate, and the annular groove is located at the junction of the rotating rod and the limit plate.

[0014] Preferably, a slider is fixedly connected to one side of the triangular block, and the slider is slidably connected to the inside of the template body.

[0015] Preferably, an anti-slip groove is provided at the junction of the template body and the slider, and the slider is located inside the anti-slip groove.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. In the present invention, the ejector oil cylinder is arranged inside the template body. When in use, the ejector piston rod pushes the contact plate. Since the contact plate is installed on the injection molding machine, the reaction force of the injection molding machine on the contact plate will prompt the template to move, thereby achieving the purpose of pushing the template to move. By building the ejector oil cylinder inside the template body, the length of the two-platen injection molding machine can be further shortened to facilitate large-scale deployment. At the same time, the built-in structure can reduce the impact of the external environment on the ejector oil cylinder.

[0018] 2. In the present invention, by arranging the joint on the ejector front cover, the traditional structure in which the joint is arranged on the ejector rear cover is changed, thereby ensuring that the ejector rear cover can withstand the resistance of the template body, thereby improving the overall structural strength. At the same time, a clamping assembly is also provided inside the template body, which can further improve the stability of the ejector cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model provides a three-dimensional structural diagram of a built-in ejector cylinder for a two-platen injection molding machine template;

[0020] Figure 2 The utility model provides a side view of a built-in ejector cylinder for a two-platen injection molding machine template;

[0021] Figure 3 The utility model provides a schematic diagram of the internal structure of a built-in ejector oil cylinder for a two-plate injection molding machine template;

[0022] Figure 4 This utility model provides a schematic diagram of the disassembly structure of a clamping assembly of a built-in ejection cylinder for a two-platen injection molding machine template;

[0023] Figure 5 The utility model provides a connection diagram of a triangular block of a built-in ejection oil cylinder for a two-platen injection molding machine template and a template body.

[0024] Legend: 1. Template body; 2. Blocking rod; 3. Contact plate; 4. Ejector cylinder body; 5. Clamping assembly; 6. Limiting plate; 7. Ejector rear cover; 8. Ejector front cover; 9. Ejector piston rod; 10. Slot; 11. Ejector piston; 12. Connector; 13. Positioning protrusion; 14. Anti-slip groove; 51. Turn rod; 52. Threaded rod; 53. Annular groove; 54. Threaded barrel; 55. Triangular block; 56. Slider. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1: Figure 1 、 Figure 2 and Figure 3As shown, the utility model provides a built-in ejector cylinder for a two-plate injection molding machine template, comprising a template body 1, an ejector rear cover 7 movably installed on one side of the template body 1, one end of the ejector rear cover 7 is fixedly connected to a positioning protrusion 13, the positioning protrusion 13 is inserted into the interior of the template body 1, the other end of the ejector rear cover 7 is fixedly connected to an ejector cylinder body 4, the other end of the ejector cylinder body 4 is fixedly connected to an ejector front cover 8, the interior of the ejector front cover 8 is slidingly connected to an ejector piston rod 9, the other end of the ejector piston rod 9 is fixedly connected to a contact plate 3, the contact plate 3 is fixedly connected to the injection molding machine, a blocking rod 2 is fixedly connected to one side of the template body 1, one end of the blocking rod 2 is pressed against one side of the contact plate 3, an ejector piston 11 is fixedly installed at the junction of the ejector piston rod 9 and the ejector cylinder body 4, and a joint 12 is fixedly installed on one side of the ejector front cover 8.

[0028] The following describes in detail the specific configuration and function of this embodiment. The template body 1 is movably installed in a two-platen injection molding machine as an injection template. The ejector rear cover 7 is installed in the template body 1 through the positioning protrusion 13. The contact plate 3 is fixedly installed on the injection molding machine. The ejector oil cylinder body 4 is installed inside the template body 1. When in use, hydraulic oil enters the ejector oil cylinder body 4 from the joint 12 to push the ejector piston rod 9.

[0029] The ejection rear cover 7 at one end of the ejection oil cylinder body 4 is installed in the template body 1 to maintain its own stability and angle to avoid tilting problems. The intersection of the ejection piston rod 9 and the ejection oil cylinder body 4 is provided with an ejection front cover 8 to determine the moving range of the ejection piston rod 9. The ejection piston 11 can reduce friction.

[0030] When the ejector piston rod 9 extends from the ejector oil cylinder body 4, the reaction force of the two-plate injection molding machine on the contact plate 3 will force the template body 1 to move, thereby completing the demolding operation. The built-in structure can further shorten the length of the two-plate injection molding machine. At the same time, the built-in structure can reduce the impact of the external environment on the ejector oil cylinder body 4, and the joint 12 is installed on the ejector front cover 8, which changes the traditional structure of the joint 12 being set on the ejector rear cover 7, ensuring that the ejector rear cover 7 can withstand the resistance of the template body 1.

[0031] Example 2: Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, a clamping assembly 5 is movably installed at the junction of the template body 1 and the ejection rear cover 7. The clamping assembly 5 includes a rotating rod 51, which is located at the edge of the ejection rear cover 7. One end of the rotating rod 51 is fixedly connected to a threaded rod 52, and an annular groove 53 is provided at the junction of the rotating rod 51 and the threaded rod 52. The other end of the threaded rod 52 is threadedly connected to a threaded cylinder 54, and one end of the threaded cylinder 54 is fixedly connected to a triangular block 55. The triangular block 55 is inserted into the interior of the ejection rear cover 7, and a slot 10 is provided at the junction of the ejection rear cover 7 and the threaded cylinder 54. A limiting plate 6 is fixedly installed on one side of the template body 1, and the rotating rod 51 is rotatably installed inside the limiting plate 6. The annular groove 53 is located at the junction of the rotating rod 51 and the limiting plate 6. A slider 56 is fixedly connected to one side of the triangular block 55. The slider 56 is slidably connected to the interior of the template body 1, and an anti-slip groove 14 is provided at the junction of the template body 1 and the slider 56. The slider 56 is located inside the anti-slip groove 14.

[0032] The effect achieved by the entire embodiment is that the clamping assembly 5 is used to fix the ejector rear cover 7. When in use, the rotating rod 51 is rotated to drive the threaded rod 52, and the threaded rod 52 is used to push the threaded cylinder 54, so that the triangular block 55 at the other end of the threaded cylinder 54 is inserted into the clamping groove 10 at the edge of the ejector rear cover 7, thereby completing the fixation of the ejector rear cover 7. The position of the rotating rod 51 is determined by the limiting plate 6, and the presence of the annular groove 53 can ensure that the rotating rod 51 will not be displaced.

[0033] The slider 56 on the side of the triangular block 55 is slidably connected to the anti-slip groove 14 of the template body 1, which can not only determine the position of the triangular block 55 and prevent the triangular block 55 from deviating from the slot 10, but also prevent the triangular block 55 from detaching from the template body 1, thereby fixing the triangular block 55.

[0034] The method of use and working principle of this device are as follows: the template body 1 is movably installed in the two-plate injection molding machine as an injection template, the ejection rear cover 7 is installed in the template body 1 through the positioning protrusion 13, the contact plate 3 is fixedly installed on the injection molding machine, and the ejection cylinder body 4 is installed inside the template body 1. When in use, hydraulic oil enters the ejection cylinder body 4 from the joint 12 to push the ejection piston rod 9. The reaction force of the two-plate injection molding machine on the contact plate 3 will force the template body 1 to move, thereby completing the demoulding operation;

[0035] The connector 12 is installed on the ejector front cover 8 to ensure that the ejector rear cover 7 can withstand the resistance of the template body 1. The ejector rear cover 7 is fixed by the clamping assembly 5. When in use, the rotating rod 51 is rotated to drive the threaded rod 52, pushing the triangular block 55 at the other end of the threaded cylinder 54 into the card slot 10 at the edge of the ejector rear cover 7 to complete the fixation of the ejector rear cover 7.

[0036] During the movement of the triangular block 55 , the slider 56 will move in the anti-slip groove 14 . The anti-slip groove 14 can not only determine the position of the triangular block 55 , but also prevent the triangular block 55 from detaching from the template body 1 , thereby fixing the triangular block 55 .

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A built-in ejector cylinder for a two-plate injection molding machine template, comprising a template body (1), characterized in that: An ejection rear cover (7) is movably mounted on one side of the template body (1), one end of the ejection rear cover (7) is fixedly connected to a positioning protrusion (13), and the positioning protrusion (13) is inserted into the interior of the template body (1), the other end of the ejection rear cover (7) is fixedly connected to an ejection oil cylinder body (4), the other end of the ejection oil cylinder body (4) is fixedly connected to an ejection front cover (8), the interior of the ejection front cover (8) is slidably connected to an ejection piston rod (9), the other end of the ejection piston rod (9) is fixedly connected to a contact plate (3), and the contact plate (3) is fixedly connected to the injection molding machine.

2. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 1, characterized in that: A blocking rod (2) is fixedly connected to one side of the template body (1), and one end of the blocking rod (2) is pressed against one side of the contact plate (3).

3. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 1, characterized in that: An ejection piston (11) is fixedly mounted at the junction of the ejection piston rod (9) and the ejection oil cylinder body (4), and a joint (12) is fixedly mounted on one side of the ejection front cover (8).

4. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 1, characterized in that: A clamping assembly (5) is movably mounted at the junction of the template body (1) and the ejection rear cover (7). The clamping assembly (5) comprises a rotating rod (51), and the rotating rod (51) is located at the edge of the ejection rear cover (7).

5. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 4, characterized in that: One end of the rotating rod (51) is fixedly connected to a threaded rod (52), and an annular groove (53) is provided at the junction of the rotating rod (51) and the threaded rod (52).

6. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 5, characterized in that: The other end of the threaded rod (52) is threadedly connected to a threaded barrel (54), and one end of the threaded barrel (54) is fixedly connected to a triangular block (55).

7. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 6, characterized in that: The triangular block (55) is inserted into the interior of the ejection rear cover (7), and a slot (10) is provided at the junction of the ejection rear cover (7) and the threaded cylinder (54).

8. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 5, characterized in that: A limit plate (6) is fixedly mounted on one side of the template body (1), the rotating rod (51) is rotatably mounted inside the limit plate (6), and the annular groove (53) is located at the junction of the rotating rod (51) and the limit plate (6).

9. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 6, characterized in that: A slider (56) is fixedly connected to one side of the triangular block (55), and the slider (56) is slidably connected to the interior of the template body (1).

10. The built-in ejector cylinder for a two-platen injection molding machine template according to claim 9, characterized in that: An anti-slip groove (14) is provided at the junction of the template body (1) and the slider (56), and the slider (56) is located inside the anti-slip groove (14).

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