Double-tooth angle pin withdrawing mechanism

Abstract

The invention relates to a double-tooth angle pin withdrawing mechanism, which comprises an ejector plate, an ejector pin, a first ejector pin and a second ejector pin, and is characterized in that the ejector plate moves in a male die under the action of a power device; the ejector rod is fixed on the ejector plate, and an ejector rod tooth row is arranged on one side of the ejector rod; a product structure can be formed at one end of the angle pin, an angle pin tooth row is arranged on one side of the angle pin, and under the action that the ejector plate pushes the ejector rod, the angle pin tooth row and the ejector rod tooth row are meshed to act synchronously, so that ejection of the product and return of the angle pin are realized; the guide block is provided with a first guide hole, a second guide hole and a fixing hole, an ejector rod is movably arranged in the first guide hole, an angle pin is movably arranged in the second guide hole, and the fixing hole is used for fixing the guide block to the male mold plate through a fixing piece. Therefore, the ejection of the product and the return of the angle pin are realized, the withdrawing stroke of the angle pin can reach about 6 times of the withdrawing stroke of the angle pin in a common mold, the simplification of a mold mechanism is realized, and the production cost is reduced.

Description

[Technical field]

[0001] The invention relates to the technical field of mold mechanisms, in particular to a double-tooth oblique pin withdrawal mechanism. [Background technology]

[0002] In the production of injection molds, products may have a variety of different structures due to their appearance or functional requirements. Generally, the mold adopts a structure in which the inclined pin is used to form the product. However, when the inclined pin exits the product structure, the withdrawal stroke of the inclined pin cannot exceed 5mm. If the stroke is exceeded, a slider mechanism must be used to achieve product production and molding. In this way, a complex mold mechanism must be designed, which will increase production costs.

[0003] In view of this, it is necessary to provide a double-tooth oblique pin withdrawal mechanism to solve the above problems. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is that: in general molds, the structure of the product is formed by an oblique pin, but when the oblique pin exits the product structure, the exit stroke of the oblique pin cannot exceed 5mm. If the stroke exceeds, a slider mechanism must be used to realize the production and molding of the product, so a complex mold mechanism must be designed, and the production cost will be increased. Therefore, the present invention provides a double-tooth oblique pin exit mechanism to solve the above problem.

[0005] The solution of the present invention to solve the technical problem is: a double-tooth oblique pin withdrawal mechanism, comprising:

[0006] A female mold, which cooperates with the male mold to form a product;

[0007] The male mold is provided with an ejection mechanism, including: an ejector plate, an ejector rod, an inclined pin and a guide block; wherein,

[0008] An ejector plate, which can move in the male mold under the action of a power device, and can drive an ejector rod fixed on the ejector plate to move together under the action of the power device;

[0009] A push rod, one end of which is fixed on the ejection plate, and the other end of which is movably inserted into the first guide hole of the guide block. The push rod is provided with a push rod tooth row on the side in contact with the oblique pin, so that the push rod can move through the first guide hole under the action of the ejection plate pushing the push rod, and at the same time, the push rod tooth row and the oblique pin tooth row are engaged with each other to make the oblique pin move synchronously;

[0010] An oblique pin, the oblique pin is movably inserted into the second guide hole of the guide block, one end of the oblique pin is used for the structure of forming the product, and one side of the oblique pin is provided with an oblique pin tooth row, and after the product is formed, the ejector plate pushes the ejector rod, so that the oblique pin tooth row and the ejector rod tooth row can be engaged and then cooperated with each other to actuate synchronously, thereby realizing the ejection of the product and the return of the oblique pin;

[0011] A guide block, wherein the guide block is fixed to the male template through a fixing member, and the guide block is provided with a first guide hole, a second guide hole and a fixing hole, wherein a push rod is movably inserted into the first guide hole, and an oblique pin is movably inserted into the second guide hole, and the fixing hole is used for the fixing member to pass through it to fix the guide block to the male template, and under the action of the ejection plate, the push rod movably passes through the first guide hole, thereby making the oblique pin tooth row and the push rod tooth row cooperate with each other through biting, so that the oblique pin is synchronously actuated in the second guide hole.

[0012] Preferably, the power device may be a hydraulic cylinder disposed on a top rod of an injection molding machine or a mold.

[0013] Preferably, the oblique pin and the ejector rod may be provided in a group in the mold through a guide block, and may also be provided in multiple groups according to the structural requirements of the product.

[0014] Preferably, the fixing member is a screw.

[0015] The beneficial effect of the present invention is that the present invention uses a double-tooth oblique pin exit mechanism, which is provided with a double-tooth structure of a push rod tooth row and an oblique pin tooth row. Under the action of the ejector plate pushing the ejector, the oblique pin tooth row and the push rod tooth row can be engaged with each other to make the oblique pin actuate synchronously, thereby realizing the ejection of the product and the return actuation of the oblique pin. This mechanism can make the exit stroke of the oblique pin in the mold reach about 6 times the exit stroke of the oblique pin in a general mold, thereby realizing the production of products with complex structures, and simplifies the mold mechanism, which can reduce production costs.

Brief Description of the Drawings

[0016] Figure 1 It is a structural schematic diagram of a double-tooth oblique pin withdrawal mechanism of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the push rod and the oblique pin in the present invention.

[0018] Figure 3 It is a structural schematic diagram of the guide block in the present invention. [Specific implementation method]

[0019] To further illustrate the technical means and effects of the present invention, the following is a detailed description in conjunction with the embodiments of the present invention and the accompanying drawings.

[0020] The present invention provides a double-tooth oblique pin withdrawal mechanism, comprising:

[0021] A female mold 20, which cooperates with the male mold 30 to form a product 40;

[0022] The male mold 30 is provided with an ejection mechanism, including: an ejection plate 110, an ejector rod 120, an inclined pin 130 and a guide block 140; wherein,

[0023] An ejector plate 110, which can move in the male mold 30 under the action of a power device (not shown in the figure), and can drive an ejector rod 120 fixed on the ejector plate 110 to move together under the action of the power device (not shown in the figure);

[0024] A push rod 120, one end of which is fixed on the ejection plate 110, and the other end of which is movably inserted into the first guide hole 141 of the guide block 140. The push rod 120 is provided with a push rod tooth row 121 on the side in contact with the oblique pin 130, so that the push rod 120 can move through the first guide hole 141 under the action of the ejection plate 110 pushing the push rod 120, and at the same time, the push rod tooth row 121 and the oblique pin tooth row 131 are engaged with each other to make the oblique pin 130 move synchronously;

[0025] The oblique pin 130 is movably inserted into the second guide hole 142 of the guide block 140. One end of the oblique pin 130 is used for forming the structure of the product 40. One side of the oblique pin 130 is provided with an oblique pin tooth row 131. After the product 40 is formed, the ejector plate 110 pushes the ejector rod 120, so that the oblique pin tooth row 131 and the ejector rod tooth row 121 can be engaged and then synchronously actuated, thereby realizing the ejection of the product 40 and the return of the oblique pin 130;

[0026] The guide block 140 is fixed to the male template 100 by a fixing member (not shown in the figure). The guide block 140 is provided with a first guide hole 141, a second guide hole 142 and a fixing hole 143. The first guide hole 141 has a push rod 120 movably inserted therein, and the second guide hole 142 has an oblique pin 130 movably inserted therein. The fixing hole 143 is used for a fixing member (not shown in the figure) to pass through it to fix the guide block 140 to the male template 100. Under the action of the ejection plate 110, the push rod 120 moves through the first guide hole 141, thereby making the oblique pin tooth row 131 and the push rod tooth row 121 cooperate with each other through bite, so that the oblique pin 130 is synchronously actuated in the second guide hole 142.

[0027] The power device (not shown in the figure) may be a hydraulic cylinder arranged on a top rod of an injection molding machine or a mold.

[0028] The oblique pin 130 and the ejector rod 120 may be provided in a group in the mold through a guide block 140 , or may be provided in multiple groups according to the structural requirements of the product.

[0029] Wherein, the fixing member (not shown in the figure) is a screw.

[0030] The beneficial effect of the present invention is that the present invention uses a double-tooth oblique pin withdrawal mechanism, which is provided with a double-tooth structure of a push rod tooth row 121 and an oblique pin tooth row 131. Under the action of the ejector plate 110 pushing the ejector 120, the oblique pin tooth row 131 and the ejector tooth row 121 can be engaged with each other to make the oblique pin 130 actuated synchronously, thereby realizing the ejection of the product 40 and the return of the oblique pin 130. This mechanism can make the withdrawal stroke of the oblique pin 130 in the mold reach about 6 times the withdrawal stroke of the oblique pin in a general mold, thereby realizing the production of products with complex structures, and realizing the simplification of the mold mechanism, which can reduce the production cost.

[0031] It should be pointed out that the present invention is not limited to the above-mentioned implementation modes, and any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments by any technician familiar with the profession based on the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A double-tooth oblique pin withdrawal mechanism, characterized in that: include: A female mold, which cooperates with the male mold to form a product; The male mold is provided with an ejection mechanism, including: an ejector plate, an ejector rod, an inclined pin and a guide block; wherein, An ejector plate, which can move in the male mold under the action of a power device, and can drive an ejector rod fixed on the ejector plate to move together under the action of the power device; A push rod, one end of which is fixed on the ejection plate, and the other end of which is movably inserted into the first guide hole of the guide block. The push rod is provided with a push rod tooth row on the side in contact with the oblique pin, so that the push rod can move through the first guide hole under the action of the ejection plate pushing the push rod, and at the same time, the push rod tooth row and the oblique pin tooth row are engaged with each other to make the oblique pin move synchronously; An oblique pin, the oblique pin is movably inserted into the second guide hole of the guide block, one end of the oblique pin is used for the structure of forming the product, and one side of the oblique pin is provided with an oblique pin tooth row, and after the product is formed, the ejector plate pushes the ejector rod, so that the oblique pin tooth row and the ejector rod tooth row can be engaged and then cooperated with each other to actuate synchronously, thereby realizing the ejection of the product and the return of the oblique pin; A guide block, wherein the guide block is fixed to the male template through a fixing member, and the guide block is provided with a first guide hole, a second guide hole and a fixing hole, wherein a push rod is movably inserted into the first guide hole, and an oblique pin is movably inserted into the second guide hole, and the fixing hole is used for the fixing member to pass through it to fix the guide block to the male template, and under the action of the ejection plate, the push rod movably passes through the first guide hole, thereby making the oblique pin tooth row and the push rod tooth row cooperate with each other through biting, so that the oblique pin is synchronously actuated in the second guide hole.

2. A double-tooth oblique pin withdrawal mechanism according to claim 1, characterized in that: The power device can be a hydraulic cylinder arranged on the ejector rod of the injection molding machine or the mold.

3. A double-tooth oblique pin withdrawal mechanism according to claim 1, characterized in that: The inclined pin and the ejector rod can be provided in a group in the mold through a guide block, and can also be provided in multiple groups according to the structural requirements of the product.

4. A double-tooth oblique pin withdrawal mechanism according to claim 1, characterized in that: The fixing member is a screw.

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