Ejection structure of forming die

Abstract

The utility model provides an ejection structure of a forming die, which relates to the technical field of dies, and comprises an ejector pin arranged on the die, and further comprises an ejection mechanism arranged on the die, the ejector pin is arranged in the ejection mechanism, the ejection mechanism comprises a first channel, a second channel and a third channel, and the first channel, the second channel and the third channel are communicated with one another. When the forming die ejection structure ejects a workpiece, the air pump is started, the air pump conveys compressed air into the second channel through the first channel, the compressed air pushes the sliding block to extrude the compression spring, then the sliding block drives the ejector pin and the circular truncated cone to move, and the workpiece is initially ejected through the circular truncated cone; according to the device, the pressure can be uniformly distributed through the synergistic effect of the ejector pin and the air flow, and the situation that the workpiece is damaged due to the fact that the local pressure of the workpiece is too large is avoided.

Description

Technical Field

[0001] This utility model relates to a mold ejection structure, specifically a forming mold ejection structure, and belongs to the field of mold technology. Background Technology

[0002] A mold is a tool used to process various materials, such as metal, plastic, and rubber. Through external force, the raw material is shaped within the mold cavity to ultimately obtain parts of the desired shape and size. Molds are widely used in industries such as automotive, electronics, and home appliances. They come in many varieties and are characterized by high precision and high efficiency. A mold mainly consists of an upper mold, a lower mold, an ejection structure, a guiding mechanism, a gating system, a cooling system, and a positioning system. The ejection structure is used to push the workpiece out of the mold after molding.

[0003] In the prior art, ejector pins are often used to eject the formed product. The ejector structure is usually set in the cavity of the mold. The ejector pin seat and ejector pin guide sleeve are used to eject the workpiece. The ejector pin pushes the workpiece out of the cavity through a hydraulic drive device.

[0004] When the contact area between the workpiece and the mold is large, the friction between the mold and the workpiece increases as the ejector pin pushes the workpiece, making it more difficult to eject the workpiece. Furthermore, the ejector pin concentrates pressure in the contact area, which may lead to excessive pressure in localized areas, ultimately damaging the workpiece. Therefore, this paper proposes an ejection structure for forming molds. Utility Model Content

[0005] This invention proposes a molding die ejection structure that can evenly distribute ejector pressure through the synergistic effect of ejector pins and airflow, thus preventing damage to the workpiece due to excessive local pressure.

[0006] This utility model is achieved through the following technical solution: a molding die ejection structure, including an ejector pin disposed on the die, and an ejection mechanism disposed on the die, with the ejector pin disposed within the ejection mechanism.

[0007] The ejection mechanism includes a first channel, a second channel, and a third channel, which are interconnected. The ejector pin is slidably disposed in the third channel. The ejection mechanism also includes a guide block, which is fixed on the ejector pin. A guide strip is fixed in the third channel, and the guide block slides on the guide strip.

[0008] A sealing hexagon socket head cap screw is installed on the second channel, and a sealing gasket is provided between the sealing hexagon socket head cap screw and the second channel. By disassembling the sealing hexagon socket head cap screw, the various components in the second channel can be maintained. The sealing gasket can improve the sealing effect between the sealing hexagon socket head cap screw and the second channel, prevent compressed air leakage, and reduce the effect of ejecting the workpiece. The upper end of the third channel is chamfered. The ejection mechanism also includes a frustum, which is fixed to the upper end of the ejector pin. The frustum is set inside the chamfer. The top surface of the frustum is large and the bottom surface is small, which can increase the contact area with the workpiece and disperse the pressure acting on the workpiece.

[0009] The ejection mechanism also includes a driving component and a limiting component. The driving component is connected to the first channel and is used to drive the ejector pin to move. The driving component includes an air pump, and the output end of the air pump is connected to an air supply pipe. The air supply pipe is connected to the first channel. When the air pump is started, the air pump begins to compress air and deliver it to the air supply pipe, the first channel, the second channel, and the third channel. When the compressed air drives the slider to move, the compressed air will also flow out from the air vent of the slider, and then push the workpiece through the compressed air flowing out from the air vent of the slider.

[0010] The limiting component includes a slider, which is fixed to the lower end of the ejector pin. The second channel and the side of the slider that are close to each other are both fixed with a fixing ring. A compression spring is fixed between the two fixing rings. The slider has a vent hole. The spring force after the compression spring is deformed can drive the slider to reset.

[0011] This utility model provides a molding die ejection structure, which has the following beneficial effects:

[0012] 1. When ejecting the workpiece, the ejector structure of this molding die starts the air pump, which sends compressed air through the first channel to the second channel. The compressed air pushes the slider to squeeze the compression spring, which in turn causes the slider to move the ejector pin and the truncated cone. The truncated cone initially lifts the workpiece. After the truncated cone moves, compressed air will also be ejected from the third channel and the truncated cone, which will further assist in lifting the workpiece. This device can evenly distribute pressure through the coordinated action of the ejector pin and the airflow, avoiding damage to the workpiece due to excessive local pressure. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the internal structure of the second channel of this utility model;

[0015] Figure 3 This is a schematic diagram of the guide block and guide strip structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the slider structure of this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 1. Threshold pin;

[0019] 2. Ejection mechanism; 201. First channel; 202. Second channel; 203. Third channel; 204. Vent hole; 205. Air pump; 206. Air supply pipe; 207. Sealing hexagon socket head cap bolt; 208. Chamfer; 209. Frustum; 210. Guide block; 211. Guide strip; 212. Retaining ring; 213. Compression spring; 214. Slider; 215. Sealing gasket;

[0020] 3. Workpiece; 4. Mold. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0022] Please see Figures 1-4 The present invention proposes the following implementation scheme: a molding die ejection structure, including an ejector pin 1, which is disposed on the mold 4, and an ejection mechanism 2, which is disposed on the mold 4, and the ejector pin 1 is disposed inside the ejection mechanism 2.

[0023] Please refer to this carefully. Figure 2 and Figure 3 The ejection mechanism 2 includes a first channel 201, a second channel 202, and a third channel 203, which are interconnected. The ejector pin 1 is slidably disposed in the third channel 203. The ejection mechanism 2 also includes a guide block 210, which is fixed on the ejector pin 1. A guide strip 211 is fixed in the third channel 203, and the guide block 210 slides on the guide strip 211.

[0024] Please refer to this carefully. Figure 2 A sealing hexagonal bolt 207 is installed on the second channel 202. A sealing gasket 215 is provided between the sealing hexagonal bolt 207 and the second channel 202. By disassembling the sealing hexagonal bolt 207, the various components in the second channel 202 can be maintained. The sealing gasket 215 can improve the sealing effect between the sealing hexagonal bolt 207 and the second channel 202.

[0025] Please refer to this carefully. Figure 3The upper end of the third channel 203 is provided with a chamfer 208. The ejection mechanism 2 also includes a frustum 209, which is fixed to the upper end of the ejector pin 1. The frustum 209 is set inside the chamfer 208. The top surface of the frustum 209 is large and the bottom surface is small, which can increase the contact area with the workpiece 3 and disperse the pressure acting on the workpiece 3.

[0026] Please refer to this carefully. Figure 1 and Figure 2 The ejection mechanism 2 also includes a driving component and a limiting component. The driving component is connected to the first channel 201 and is used to drive the ejector pin 1 to move. The driving component includes an air pump 205. The output end of the air pump 205 is connected to an air supply pipe 206, which is connected to the first channel 201.

[0027] When the air pump 205 is started, it compresses air and delivers it to the air supply pipe 206, the first channel 201, the second channel 202, and the third channel 203. When the compressed air drives the slider 214 to move, the compressed air will also flow out from the air vent 204 of the slider 214, and then push the workpiece 3 through the compressed air flowing out from the air vent 204 of the slider 214.

[0028] Please refer to this carefully. Figure 2 and Figure 4 The limiting component includes a slider 214, which is fixed to the lower end of the ejector pin 1. The second channel 202 and the slider 214 are both fixed with a fixing ring 212 on the side that are close to each other. A compression spring 213 is fixed between the two fixing rings 212. A vent hole 204 is provided on the slider 214. The elastic force after the compression spring 213 is deformed can drive the slider 214 to reset.

[0029] Working principle: When it is necessary to eject workpiece 3, the air pump 205 is first started. The air pump 205 sends compressed air to the second channel 202 through the first channel 201. The compressed air will push the slider 214 to squeeze the compression spring 213, causing the compression spring 213 to deform. Subsequently, the deformation of the compression spring 213 can drive the slider 214, ejector pin 1, and frustum 209 to reset. At this time, the slider 214 will drive the ejector pin 1 and frustum 209 to move, and then the frustum 209 will initially lift the workpiece 3. After the frustum 209 moves, the frustum 209 will no longer seal the upper end of the third channel 203. At this time, compressed air will also be ejected from the third channel 203 and frustum 209, and then the compressed air will assist in lifting the workpiece 3. This device can evenly distribute pressure through the coordinated action of ejector pin 1 and airflow, avoiding damage to workpiece 3 due to excessive local pressure.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A molding die ejection structure, comprising an ejector pin (1), the ejector pin (1) being disposed on a die (4), characterized in that: It also includes an ejection mechanism (2), which is disposed on the mold (4), and the ejector pin (1) is disposed inside the ejection mechanism (2); The ejection mechanism (2) includes a first channel (201), a second channel (202) and a third channel (203), which are interconnected. The ejector pin (1) is slidably disposed in the third channel (203). The ejection mechanism (2) also includes a driving component and a limiting component. The driving component is connected to the first channel (201) and is used to drive the ejector pin (1) to move.

2. The molding die ejection structure according to claim 1, characterized in that: The driving component includes an air pump (205), the output end of which is connected to an air supply pipe (206), and the air supply pipe (206) is connected to the first channel (201).

3. The molding die ejection structure according to claim 1, characterized in that: A sealing hexagon socket head cap bolt (207) is installed on the second channel (202).

4. The molding die ejection structure according to claim 1, characterized in that: The upper end of the third channel (203) is provided with a chamfer (208), and the ejection mechanism (2) also includes a frustum (209), which is fixed to the upper end of the ejector pin (1) and is located in the chamfer (208).

5. The molding die ejection structure according to claim 1, characterized in that: The ejection mechanism (2) further includes a guide block (210), which is fixed on the ejector pin (1). A guide strip (211) is fixed in the third channel (203), and the guide block (210) slides on the guide strip (211).

6. The molding die ejection structure according to claim 1, characterized in that: The limiting component includes a slider (214), which is fixed to the lower end of the ejector pin (1). The second channel (202) and the slider (214) are both fixed with a fixing ring (212) on the side close to each other. A compression spring (213) is fixed between the two fixing rings (212). A vent hole (204) is provided on the slider (214).

7. The molding die ejection structure according to claim 3, characterized in that: A sealing gasket (215) is provided between the sealing hexagonal bolt (207) and the second channel (202).

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