Arc core-pulling mechanism

Abstract

An arc core-pulling machine, including guide block, core-pulling insert and positioning block, the top of the guide block is provided with a vertical guide rail, the guide rail drives the guide block to move, one side end of the guide block is provided with an inclined inverted T-shaped guide rail, the inclined inverted T-shaped guide rail is connected with the core-pulling insert, one end of the core-pulling insert is connected with the guide block, and the other end is designed with an arc-shaped insert, the arc-shaped insert corresponds to the required insert shape of the applicable product, the side end of the core-pulling insert is further provided with a boss, a pin is protruded outward on the boss, the pin is arranged to be matched with the positioning block arranged on both sides, and the pin guide groove shape assembled in the positioning block is same with the arc-shaped insert shape, namely, different insert shapes can be designed by changing the shape of the guide groove on the positioning block.

Description

[Technical Field]

[0001] This invention relates to the field of mechanical structures, specifically to a circular arc core-pulling mechanism. [Background Technology]

[0002] Currently, when manufacturing plastic parts, we typically use slider inserts to form the product structure. When the mold opens, a guide post moves the slider, which connects to the slider insert, causing the insert to exit the product's cavity. If the product's exit direction is not a regular plane but a curved surface, multiple slider structures need to work together to form the slider insert and create the product cavity. Alternatively, the product may need to be modified if molding is difficult. However, this makes it inconvenient to use optimal product structures and hinders new product development.

[0003] In view of this, it is necessary to develop a circular arc core-pulling machine that can form products with a circular arc undercut in the direction of the slider insert's withdrawal. [Summary of the Invention]

[0004] The technical problem to be solved by this invention is: in order to solve the problems of complex combination slider structure of existing arc inserts during the withdrawal process, large space occupation, and complex modification when the insert shape is different, this invention provides an arc core pulling mechanism to solve the above problems.

[0005] The solution to the technical problem of this invention is: a circular arc core-pulling machine, comprising:

[0006] A guide block, one end of which is connected to the movement of the template, and an inclined guide rail is provided on one side of the guide block;

[0007] The core puller has an inclined guide rail assembly guide block at one end and an arc-shaped core puller at the other end. A boss is provided on one side of the core puller and two symmetrical pins are provided at the center of both ends of the boss.

[0008] The positioning block has screws inside it that can be assembled onto the female mold core. The positioning block has a pin guide groove. The positioning block is assembled at the pin of the core-pulling boss. The positioning block has two symmetrical pins.

[0009] Preferably, the guide block is connected to the male template by a central pin at one end.

[0010] Preferably, the guide block and the core puller are assembled via corresponding inclined guide rails, which are concave T-shaped and convex T-shaped, and are connected and move along the guide rail direction.

[0011] Preferably, the arc-shaped insert on the core-pulling insert is designed according to the insert shape required for the applicable product.

[0012] Preferably, the pins on the side boss of the core puller are fitted into the pin guide grooves of the positioning block on both sides.

[0013] Preferably, the pin guide groove of the positioning block can be changed according to the shape of the arc-shaped insert of the desired product.

[0014] Preferably, the positioning block is assembled onto the female mold core by screws, and the position of the overall structure can be changed according to the assembly position of the positioning block, thereby adjusting the core pulling process of the insert to suit different insert shapes.

[0015] The beneficial effects of this invention are that it controls the movement trajectory of the pin through the arc guide groove on the positioning block. The movement trajectory of the pin is the movement trajectory of the core-pulling insert, which is also the movement trajectory of the arc-shaped insert on the core-pulling insert. That is, this invention can design different insert shapes by changing the shape of the guide groove on the positioning block. It has a wide range of applications, simple design modification structure, and single and reliable movement mode. [Attached Image Description]

[0016] Figure 1 This is a full cross-sectional schematic diagram of all components of a circular arc core-pulling mechanism according to the present invention.

[0017] Figure 2 This is a schematic diagram of the main components of a circular arc core-pulling mechanism according to the present invention.

[0018] Figure 3 This is a plan view of the main components of a circular arc core-pulling mechanism according to the present invention.

Detailed Implementation Methods

[0019] To further illustrate the technical means and effects of the present invention, a preferred embodiment of the present invention and its accompanying drawings are described in detail below.

[0020] This invention provides a circular arc core-pulling mechanism. A connecting screw 110 is provided on a male template 100 relative to the circular arc core-pulling mechanism. One end of the connecting screw 110 is fixed to the male template 100, and the other end is fixed inside a guide block 120. The guide block 120 has an inclined convex guide rail 121 on one side relative to the core-pulling insert 130. The core-pulling insert 130 has an inclined concave guide rail 131 corresponding to the inclined convex guide rail 121 on the end relative to the guide block. A product insert 132 is provided at the other end of the core-pulling insert 130. The product insert 132 is designed as a circular arc according to the required insert shape of the applicable product 140. In this configuration, the applicable product 140 is located within the male mold core 150. The core-pulling insert 130 has a protrusion 133 on one side of the product insert 132 end. The center of the protrusion 133 has pins 134 on both sides. Each side of the protrusion 134 has a positioning block 160. The positioning block 160 has an arc-shaped pin guide groove 161 corresponding to the pin 134. The pin guide groove 161 is fitted with the pin 134 to control the movement direction of the core-pulling insert 130. The positioning block 160 is adjustablely fixed to the female mold core 210 by screws 161. The female mold core 210 is fitted onto the female mold plate 200.

[0021] In this specific embodiment, the arc-shaped core-pulling mechanism operates as follows: the guide block 120 moves in the direction of movement of the male template 100 controlled by the connecting screw 110, and the movement of the guide block 120 controls the core-pulling insert 130 to move away from the applicable product 140. At the same time, the pin 134 is controlled by the pin guide groove 161 on the positioning block 160 to move the core-pulling insert 130 along the direction of the pin guide groove 161. Since the design shape of the pin guide groove 161 is the same as the shape of the product insert 132, the product insert 132 can be pulled out in an arc shape in one go.

[0022] In summary, the arc-shaped core-pulling machine of the present invention, by adding a positioning block 160, designs a pin guide groove 161 on the positioning block 160. The shape of the pin guide groove 161 controls the movement trajectory of the core-pulling insert 130, so that the product insert 132 can move along the same trajectory as the pin guide groove 161, achieving an arc-shaped core-pulling effect. In addition, different product inserts 132 can be designed by changing the shape of the pin guide groove 161. The overall structure is simple and reliable, easy to modify and design, and has a wide range of applications.

[0023] It should be noted that the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments based on the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A circular arc core-pulling mechanism, characterized in that, include: A guide block, one end of which is connected to the moving template, and an inclined guide rail on one side of the guide block. The guide block and the core puller are assembled through the corresponding inclined guide rails, which are concave T-shaped and convex T-shaped, and are connected and moved along the guide rail direction. The core puller has an inclined guide rail assembly guide block at one end and an arc-shaped core puller at the other end. A boss is provided on one side of the core puller and two symmetrical pins are provided at the center of both ends of the boss. The positioning block has screws installed inside it for mounting on the female mold core. The positioning block has a pin guide groove. The positioning block is mounted on the pin of the core-pulling insert boss. The pins on both sides of the side boss of the core-pulling insert are mounted in the pin guide groove of the positioning block. The positioning block is mounted on the female mold core by screws. The position of the overall structure can be changed according to the mounting position of the positioning block, thereby adjusting the core-pulling movement process of the insert to suit different insert shapes.

2. The circular arc core-pulling mechanism as described in claim 1, characterized in that: The guide block is connected to the male template by a central pin at one end.

3. The circular arc core-pulling mechanism as described in claim 1, characterized in that: The arc-shaped insert on the core-pulling insert is designed according to the insert shape required by the applicable product.

4. The circular arc core-pulling mechanism as described in claim 1, characterized in that: The pin guide groove of the positioning block can be changed according to the shape of the arc-shaped insert of the required product.

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