Ejector pin structure of injection mold

Abstract

The utility model provides an ejector pin structure of an injection mold. The ejector pin structure comprises an ejector pin plate body, a movable seat is movably arranged in an inner groove, a mounting seat is arranged on the outer side of the movable seat, a supporting arm is connected to the bottom end of a pin shaft seat, a telescopic rod is connected to the bottom end of the supporting arm, and a loading frame is movably connected to the bottom end of the telescopic rod. After the loading frame slides to the assembly site on the ejector plate body, the ejector on the loading frame is directly pushed into the mounting hole site on the ejector plate body, the loading frame can store ejector pieces of the same type, the top of the loading frame is supported by the telescopic rod, the height of the loading frame can be adjusted, and the loading frame is convenient to use. And meanwhile, a movable pin shaft seat is further arranged at one end of the loading frame, the loading frame can swing towards the two sides, the angle of the loading frame can be adjusted, the ejector pins needing to be loaded on the loading frame can be adjusted to move to the front ends of the corresponding assembly holes during loading, the ejector pins are directly pushed in, and ejector pin assembly is more efficient and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology and relates to an ejector pin structure for injection molds. Background Technology

[0002] Injection molds produce finished products by injecting molten plastic into a mold cavity, which then cools and solidifies. They are suitable for mass production of plastic parts with complex geometries and high precision requirements. Injection molds mainly include the following structures: mold base: supporting the overall structure of the mold, including fixed templates and moving templates; molding components: cavity and core; gating system: composed of main runner, branch runners, gates, etc., guiding the molten plastic into the cavity.

[0003] After injection molding, when demolding is required, ejection pins are used for ejection. However, existing ejection pins have the following problems during assembly:

[0004] Typically, a mold ejector plate needs to be equipped with dozens or even hundreds of ejector pins, and the types of ejector pins in different areas are also different. This makes the assembly of ejector pins very cumbersome and prone to errors. Therefore, it is necessary to design an ejector pin structure that can improve assembly efficiency and accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide an ejector pin structure for injection molds to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An ejector pin structure for an injection mold includes an ejector pin plate, a loading frame, a telescopic rod, and a movable seat. The ejector pin plate has two inner grooves. A movable seat is movably disposed within each inner groove. An mounting seat is disposed outside the movable seat. A fixing block is installed inside the mounting seat. One end of the fixing block is connected to a pin seat via a swing arm shaft, and one end of the swing arm shaft is movably disposed inside the pin seat. A support arm is connected to the bottom end of the pin seat, and a telescopic rod is connected to the bottom end of the support arm. The loading frame is movably connected to the bottom end of the telescopic rod.

[0008] In the ejector pin structure of the above-mentioned injection mold, a support wheel groove is provided in the middle of the inner groove, and a support roller is provided in the middle of the movable seat, and the support roller slides inside the support wheel groove.

[0009] In the ejector pin structure of the above-mentioned injection mold, multiple ejector pin slots are provided on both sides of the loading frame from top to bottom, and magnetic suction rings are provided inside the ejector pin slots.

[0010] In the ejector pin structure of the above-mentioned injection mold, the fixing block has two fixing holes inside, the top end of the mounting base is threaded with a positioning bolt, and the bottom end of the positioning bolt is threaded inside the fixing hole.

[0011] In the ejector pin structure of the above-mentioned injection mold, the loading frame has an inner cavity in the middle, and the bottom of the telescopic rod is provided with a limiting slide, which slides inside the inner cavity.

[0012] In the ejector pin structure of the above-mentioned injection mold, multiple ejector pin mounting holes are provided on the side of the ejector pin plate.

[0013] Compared with the prior art, the advantages of the ejector pin structure of the injection mold of this utility model are as follows:

[0014] This application features an inner groove on the ejector plate, with a sliding movable seat inside the groove. The loading frame is fixed to the movable seat, and when the movable seat slides, it moves the loading frame. After the loading frame slides to the assembly point on the ejector plate, the ejector pins on the loading frame can be directly pushed into the mounting holes on the ejector plate, completing the ejector pin assembly. The loading frame of this application can store ejector pins of the same type, and the top of the loading frame is supported by a telescopic rod, allowing the height of the loading frame to be adjusted. Additionally, one end of the loading frame is equipped with a movable pin seat, allowing the loading frame to swing to both sides to adjust its angle. During loading, the ejector pin to be loaded can be moved to the front of the corresponding assembly hole, and the ejector pin can be directly pushed in. This makes ejector pin assembly more efficient and convenient. Furthermore, the loading frame of this application can store and place ejector pins of the same type, which greatly reduces the probability of ejector pin assembly errors and further improves assembly efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the ejector pin structure of an injection mold according to the present invention.

[0016] Figure 2 This is a schematic diagram of the loading frame structure of the ejector pin structure of an injection mold according to this utility model.

[0017] Figure 3 This is an enlarged schematic diagram of the movable seat structure of the ejector pin structure of an injection mold according to this utility model.

[0018] In the diagram, 1. Ejector plate; 2. Loading frame; 3. Inner groove; 4. Support wheel groove; 5. Ejector groove; 6. Magnetic ring; 7. Telescopic rod; 8. Support arm; 9. Pin seat; 10. Swing arm shaft; 11. Fixing block; 12. Fixing hole; 13. Moving seat; 14. Support roller; 15. Mounting seat; 16. Positioning bolt. Detailed Implementation

[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0020] An ejector pin structure for an injection mold includes an ejector pin plate 1, a loading rack 2, a telescopic rod 7, and a movable seat 13. The ejector pin plate 1 has two inner grooves 3. The movable seat 13 is movably disposed inside the inner grooves 3. An mounting seat 15 is disposed on the outer side of the movable seat 13. A fixing block 11 is installed inside the mounting seat 15. One end of the fixing block 11 is connected to a pin seat 9 via a swing arm shaft 10, and one end of the swing arm shaft 10 is movably disposed inside the pin seat 9. A support arm 8 is connected to the bottom end of the pin seat 9, and a telescopic rod 7 is connected to the bottom end of the support arm 8. The loading rack 2 is movably connected to the bottom end of the telescopic rod 7. The loading rack 2 of this application can load ejector pins of the same type for assembly. The ejector pin slots 5 on the loading rack 2 have different diameters, and are used to hold different types of ejector pins. Therefore, the loading rack 2 of this application also classifies and stores ejector pins. When a specific type of ejector pin is needed for assembly, only the corresponding loading rack 2 needs to be taken out. In this way, assembly errors can be reduced during the assembly of the ejector pins of this application.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides an ejector pin structure for an injection mold. Specifically, a support wheel groove 4 is provided in the middle of the inner groove 3, and a support roller 14 is provided in the middle of the movable seat 13, and the support roller 14 slides inside the support wheel groove 4.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses an ejector pin structure for an injection mold. Specifically, multiple ejector pin slots 5 are provided on both sides of the loading frame 2 from top to bottom. Magnetic rings 6 are provided inside the ejector pin slots 5. The magnetic rings 6 mainly magnetically attract the ejector pins inside the ejector pin slots 5. The magnetic attraction strength does not need to be too high; it is mainly for auxiliary positioning of the ejector pins to ensure that the ejector pins can be easily pushed during installation. The magnetic rings 6 mainly attract ejector pins with magnetic properties. For ejector pins made of special materials, the ejector pin slots 5 can be used for limiting their position.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses an ejector pin structure for an injection mold. Specifically, the fixing block 11 has two fixing holes 12 inside. The top end of the mounting base 15 is threaded with a positioning bolt 16, and the bottom end of the positioning bolt 16 is threaded inside the fixing hole 12. The positioning bolt 16 mainly fixes and limits the fixing block 11.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses an ejector pin structure for an injection mold. Specifically, the loading frame 2 has an inner cavity in the middle, and the bottom of the telescopic rod 7 is provided with a limiting slide, which slides inside the inner cavity. In this way, the height of the entire loading frame 2 can be adjusted by sliding the telescopic rod 7, and the limiting slide will not slip off. The telescopic rod 7 is a metal rod.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model discloses an ejector pin structure for an injection mold. Specifically, the ejector pin plate 1 has multiple ejector pin mounting holes on its side. When installing the ejector pins, the corresponding ejector pins are installed inside the ejector pin mounting holes.

[0026] This utility model discloses an ejector pin structure for an injection mold. When assembling ejector pins, the loading frame 2 with ejector pins already installed is picked up, and the fixing block 11 on the top of the loading frame 2 is fixed inside the mounting base 15, so that the loading frame 2 is fixed on the movable base 13. When the movable base 13 is slid, the loading frame 2 can be moved. After the loading frame 2 slides to the assembly point on the ejector pin plate 1, the ejector pin on the loading frame 2 can be directly pushed into the mounting hole on the ejector pin plate 1 to complete the assembly of the ejector pin. The top of the loading frame 2 is supported by a telescopic rod 7, and the height of the loading frame 2 can be adjusted. At the same time, a movable pin seat 9 is provided at one end of the loading frame 2, which can swing the loading frame 2 to both sides to adjust the angle of the loading frame 2. During loading, the ejector pin to be loaded can be moved to the front end of the corresponding assembly hole of the loading frame 2, and the ejector pin can be directly pushed in. The assembly of ejector pins is more efficient and convenient.

[0027] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. An ejector pin structure for an injection mold, comprising an ejector pin plate (1), a loading frame (2), a telescopic rod (7), and a movable base (13), characterized in that, The ejector plate (1) has two inner grooves (3) inside. A movable seat (13) is movably arranged inside the inner groove (3). An installation seat (15) is arranged on the outside of the movable seat (13). A fixing block (11) is installed inside the installation seat (15). One end of the fixing block (11) is connected to a pin seat (9) through a swing arm shaft (10). One end of the swing arm shaft (10) is movably arranged inside the pin seat (9). A support arm (8) is connected to the bottom end of the pin seat (9). A telescopic rod (7) is connected to the bottom end of the support arm (8). A loading frame (2) is movably connected to the bottom end of the telescopic rod (7).

2. The ejector pin structure of an injection mold according to claim 1, characterized in that, The inner groove (3) has a support wheel groove (4) in the middle, and the movable seat (13) has a support roller (14) in the middle, and the support roller (14) slides inside the support wheel groove (4).

3. The ejector pin structure of an injection mold according to claim 1, characterized in that, The loading frame (2) has multiple ejector pin slots (5) arranged from top to bottom on both sides, and a magnetic suction ring (6) is provided inside the ejector pin slot (5).

4. The ejector pin structure of an injection mold according to claim 1, characterized in that, The fixing block (11) has two fixing holes (12) inside. The top end of the mounting base (15) is threaded with a positioning bolt (16), and the bottom end of the positioning bolt (16) is threaded inside the fixing hole (12).

5. The ejector pin structure of an injection mold according to claim 1, characterized in that, The loading frame (2) has an inner cavity in the middle, and the bottom of the telescopic rod (7) is provided with a limiting slide, which slides inside the inner cavity.

6. The ejector pin structure of an injection mold according to claim 1, characterized in that, The ejector plate (1) has multiple ejector mounting holes on its side.

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