An ejection structure and its injection mold

Abstract

This utility model discloses an ejection structure and its injection mold, including a top plate, a top rod fixedly connected to the top of the top plate for use with a lower mold, a support spring disposed at the bottom of the top plate, an installation assembly disposed in an installation chamber for limiting the installation of the support spring and the top plate, a bottom plate disposed at the bottom of the inner cavity of the installation chamber, the bottom of the support spring being pressed against the bottom plate, a guide rod disposed on the bottom plate, a connecting hole matching the guide rod being opened at the bottom of the top plate, the support spring being slidably sleeved on the outside of the guide rod, and a locking assembly disposed on the bottom plate. This utility model utilizes the cooperative use of the lower mold, top plate, support spring, and installation assembly, and by pressing down on the locking plate with a button, not only can the bottom plate be unlocked, but the guide rod can also be separated from the top plate, allowing the bottom plate, guide rod, and support spring to slide out from the lower mold for easy replacement and maintenance of the support spring.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to an ejection structure and its injection mold. Background Technology

[0002] The ejection structure of a mold is a very important component in molds for plastic molding, metal stamping, etc. Its main function is to eject the product from the mold after molding or stamping is completed, so as to facilitate subsequent operations and production.

[0003] The ejection mechanism is usually installed on the lower mold base to eject the product from the lower mold base. The ejection mechanism usually consists of an ejector plate, an ejector rod, a guide mechanism and a drive source. The drive source is usually composed of a spring or a cylinder. The spring is used to provide the ejection force, so that when the upper mold and the lower mold open, the spring can eject the product in the lower mold base through the ejector plate and the ejector rod.

[0004] When installing the top plate, ejector rod, guide mechanism, and spring, they are directly assembled into the lower mold base using bolts and fasteners. Furthermore, the lower mold base needs to be disassembled and reassembled during installation or disassembly. This increases the difficulty of spring replacement and maintenance when the spring rusts or its elasticity coefficient decreases, thus introducing certain defects. Utility Model Content

[0005] The purpose of this invention is to provide an ejection structure and its injection mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ejection structure and its injection mold, used to eject products from the lower mold cavity, comprising:

[0007] The top plate has an installation chamber on one side of the lower mold for mounting the top plate, and a push rod that cooperates with the lower mold is fixedly connected to the top of the top plate.

[0008] A support spring is provided at the bottom of the top plate, and the support spring acts on the top plate with an elastic support force;

[0009] The mounting assembly is disposed in the mounting chamber and is used to limit the installation of the support spring and the top plate.

[0010] Preferably, the mounting components include:

[0011] A base plate is disposed at the bottom of the mounting cavity, and the bottom of the support spring is pressed and fitted against the base plate;

[0012] A guide rod is provided on the base plate, and a connecting hole matching the guide rod is provided at the bottom of the top plate. The support spring is slidably sleeved on the outside of the guide rod.

[0013] A locking component is disposed on the base plate and is used to lock and limit the base plate and the guide rod.

[0014] Preferably, the locking component includes:

[0015] A locking plate is provided, wherein one side of the base plate has mounting holes that match the locking plate;

[0016] A through hole is provided at the top of the base plate. The bottom of the outer wall of the guide rod is slidably sleeved with the through hole, and the bottom of the guide rod is fixedly connected to the locking plate.

[0017] Preferably, the locking component further includes:

[0018] A fixing rod is fixedly connected to the inside of the mounting hole, and the outer wall of the fixing rod is slidably inserted into the locking plate.

[0019] A limiting spring is slidably sleeved on the outside of the fixed rod, and the limiting spring is located at the bottom of the locking plate.

[0020] Preferably, the locking component further includes:

[0021] A button, which is fixedly connected to the top of the locking plate, and the outer wall of the button is slidably inserted into the bottom plate;

[0022] A limiting block is fixedly connected to the bottom of the inner wall of the mounting hole, and the limiting block is used to limit the position of the locking plate as it descends.

[0023] Preferably, the locking component further includes:

[0024] A sliding groove is formed on the side of the inner wall of the mounting cavity, and the end of the outer wall of the locking plate is slidably sleeved with the inner cavity of the sliding groove.

[0025] A groove is formed at the bottom of the inner wall side of the mounting cavity, and the inner cavity of the sliding groove is connected to the inner cavity of the groove.

[0026] The slider is fixedly connected to the side of the top plate, and the outer wall of the slider is slidably sleeved with the inner cavity of the groove.

[0027] Another objective of this utility model is to provide an ejection structure and an injection mold thereof, wherein the injection mold includes the ejection structure described above.

[0028] The technical effects and advantages of this utility model are as follows:

[0029] This utility model utilizes the combined use of a lower mold, a top plate, a support spring, and an installation component. The installation component includes a base plate, a guide rod, a locking component, and a locking plate. By pressing down the locking plate with a button, not only can the base plate be unlocked, but the guide rod can also be separated from the top plate. This allows the base plate, guide rod, and support spring to slide out of the lower mold for easy replacement and maintenance of the support spring. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the internal structure of part of the front of this utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the base plate of this utility model.

[0033] In the diagram: 1. Lower mold; 2. Top plate; 3. Support spring; 4. Mounting assembly; 41. Base plate; 42. Guide rod; 43. Locking assembly; 431. Locking plate; 432. Through hole; 433. Fixing rod; 434. Limit spring; 435. Button; 436. Limit block; 437. Slide groove; 438. Slot; 439. Slider. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] This utility model provides, for example Figure 1-3 The diagram shows an ejector structure.

[0036] Example 1: Includes a product ejected from the cavity of the lower mold 1, comprising a top plate 2, a support spring 3, and a mounting assembly 4. A mounting chamber for mounting the top plate 2 is provided on one side of the lower mold 1. A push rod for use with the lower mold 1 is fixedly connected to the top of the top plate 2. The support spring 3 is located at the bottom of the top plate 2 and exerts an elastic support force on the top plate 2. The mounting assembly 4 is located in the mounting chamber and is used to limit the installation of the support spring 3 and the top plate 2. The mounting assembly 4 can be disassembled independently, thus allowing for disassembly and maintenance of the top plate 2 and the support spring 3 without disassembling the lower mold 1.

[0037] Furthermore, the mounting assembly 4 includes a base plate 41, a guide rod 42, and a locking assembly 43. The base plate 41 is located at the bottom of the mounting cavity, and the bottom of the support spring 3 is pressed against the base plate 41. The guide rod 42 is located on the base plate 41, and the bottom of the top plate 2 has a connecting hole that matches the guide rod 42, so that the guide rod 42 can guide and limit the top plate 2. The support spring 3 is slidably sleeved on the outside of the guide rod 42, so that the guide rod 42 can also guide and limit the support spring 3. The locking assembly 43 is located on the base plate 41 and is used to lock and limit the base plate 41 and the guide rod 42. By releasing the locking assembly 43 from locking the base plate 41 and the guide rod 42, the base plate 41 and the guide rod 42 can be disassembled, thereby disassembling the support spring 3 and the top plate 2.

[0038] In particular, the locking assembly 43 includes a locking plate 431, a through hole 432, a fixing rod 433, and a limiting spring 434. A mounting hole matching the locking plate 431 is provided on one side of the base plate 41. The through hole 432 is located at the top of the base plate 41. The bottom of the outer wall of the guide rod 42 is slidably sleeved with the through hole 432. The bottom of the guide rod 42 is fixedly connected to the locking plate 431. Pressing down on the locking plate 431 causes the locking plate 431 to move the guide rod 42 away from the top plate 2, allowing the guide rod 42 to move the support spring 3 relative to the top plate 2. The locking plate 431 is slidably inserted and sleeved with the outer wall of the locking rod 433 and the outer wall of the locking rod 433. The limiting spring 434 is slidably sleeved on the outside of the locking rod 433 and is located at the bottom of the locking plate 431. The limiting spring 434 can provide an elastic support force to the locking plate 431, so that the locking plate 431 drives the guide rod 42 to maintain a stable connection with the top plate 2. The elastic force of the limiting spring 434 acting on the locking plate 431 is sufficient to support the weight of the locking plate 431 and the guide rod 42.

[0039] Furthermore, the locking assembly 43 also includes a button 435 and a limiting block 436. The button 435 is fixedly connected to the top of the locking plate 431. The outer wall of the button 435 is slidably inserted into the bottom plate 41. Pressing the button 435 will cause the locking plate 431 to drive the guide rod 42 to descend, causing the top of the guide rod 42 to separate from the top plate 2. The limiting block 436 is fixedly connected to the bottom of the inner wall of the mounting hole. The limiting block 436 is used to limit the descending position of the locking plate 431, thereby preventing the descending of the locking plate 431 from causing pressure damage to the limiting spring 434. The top of the locking plate 431 and the limiting block 436 are in contact. At this time, the locking plate 431 drives the guide rod 42 to separate from the top plate 2.

[0040] Example 2: Based on Example 1, the locking assembly 43 further includes a sliding groove 437, a slot 438, and a slider 439. The sliding groove 437 is formed on the side of the inner wall of the mounting cavity. The end of the outer wall of the locking plate 431 is slidably sleeved with the inner cavity of the sliding groove 437. Under the action of the limiting spring 434, the locking plate 431 can be locked in the sliding groove 437, thereby locking the bottom plate 41. The slot 438 is formed at the bottom of the side of the inner wall of the mounting cavity. The inner cavity of the sliding groove 437 and the inner cavity of the slot 438 are interconnected, and the slot 438 has a certain height. When the locking plate 431 is in contact with the top of the limiting block 436, the end of the locking plate 431 is located in the slot 438, thereby allowing the bottom plate 41 to be pulled out. The slider 439 is fixedly connected to the side of the top plate 2. The outer wall of the slider 439 is slidably sleeved with the inner cavity of the sliding groove 437, and the slider 439 can guide the top plate 2.

[0041] like Figure 1 As shown, this embodiment provides an injection mold, which includes the ejection structure described above. The injection mold consists of a lower mold 1 and an upper mold, and a guide rod is fixedly connected to the top of the top plate 2. When the upper mold and the lower mold 1 are closed, the upper mold can press the top plate 2 down through the guide rod, so that the top of the ejector rod on the top plate 2 is flat with the cavity of the lower mold 1, and the upper mold and the lower mold 1 are separated. Under the action of the support spring 3, the top plate 2 drives the ejector rod to rise, so that the ejector rod ejects the product from the lower mold 1. This is prior art and will not be described in detail here. Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An ejection structure for ejecting a product from the cavity of a lower mold (1), characterized in that, include: The top plate (2) is provided with an installation chamber for installing the top plate (2) on one side of the lower mold (1), and the top of the top plate (2) is fixedly connected with a push rod that cooperates with the lower mold (1); A support spring (3) is provided at the bottom of the top plate (2) and the support spring (3) acts on the top plate (2) with an elastic support force; The mounting assembly (4) is disposed in the mounting chamber and is used to limit the installation of the support spring (3) and the top plate (2).

2. The ejection structure according to claim 1, characterized in that, The installation component (4) includes: The base plate (41) is located at the bottom of the inner cavity of the mounting chamber, and the bottom of the support spring (3) is pressed against the base plate (41); Guide rod (42), the guide rod (42) is set on the bottom plate (41), the bottom of the top plate (2) is provided with a connecting hole that matches the guide rod (42), and the support spring (3) is slidably sleeved on the outside of the guide rod (42); Locking component (43) is disposed on base plate (41) and is used to lock and limit base plate (41) and guide rod (42).

3. The ejection structure according to claim 2, characterized in that, The locking component (43) includes: Locking plate (431), one side of the base plate (41) is provided with mounting holes that match the locking plate (431); A through hole (432) is provided on the top of the base plate (41). The bottom of the outer wall of the guide rod (42) is slidably sleeved with the through hole (432). The bottom of the guide rod (42) is fixedly connected to the locking plate (431).

4. The ejection structure according to claim 3, characterized in that, The locking component (43) further includes: A fixing rod (433) is fixedly connected to the inside of the mounting hole, and the outer wall of the fixing rod (433) is slidably inserted into the locking plate (431); A limiting spring (434) is slidably sleeved on the outside of the fixing rod (433) and the limiting spring (434) is located at the bottom of the locking plate (431).

5. The ejection structure according to claim 4, characterized in that, The locking component (43) further includes: Button (435), the button (435) is fixedly connected to the top of the locking plate (431), and the outer wall of the button (435) is slidably inserted into the bottom plate (41); A limiting block (436) is fixedly connected to the bottom of the inner wall of the mounting hole. The limiting block (436) is used to limit the position of the locking plate (431) as it descends.

6. The ejection structure according to claim 5, characterized in that, The locking component (43) further includes: The slide groove (437) is opened on the side of the inner wall of the mounting cavity, and the end of the outer wall of the locking plate (431) is slidably sleeved with the inner cavity of the slide groove (437). A slot (438) is formed at the bottom of the inner wall side of the mounting cavity, and the inner cavity of the sliding groove (437) is connected to the inner cavity of the slot (438). The slider (439) is fixedly connected to the side of the top plate (2), and the outer wall of the slider (439) is slidably sleeved with the inner cavity of the groove (437).

7. An injection mold, characterized in that, The injection mold includes the ejection structure as described in any one of claims 1-6.

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