A two-stage knuckle pin mechanism

Abstract

The application relates to a two-section inclined pin mechanism and relates to the technical field of molds.The two-section inclined pin mechanism comprises an inclined pin and a sliding block.The inclined pin is provided with a guide groove, a reverse hook groove and a sliding hole.The sliding block is provided with a guide block, a limiting rod and a limiting block.When a molded product is ejected, the reverse hook in the sliding block is withdrawn from the reverse hook groove of the molded product, and the reverse hook groove in the inclined pin is far away from the reverse hook of the molded product, so that the molded product is ejected.The beneficial effects of the application are as follows: the two-section inclined pin mechanism has two-directional movement in the ejection process, so that the molded product with a specific structure is formed; the inclined pin only needs a small withdrawal stroke to withdraw the reverse hook; the ejection of the inclined pin does not affect the taking out of the product; the inclination is small, the space is small, the overall mold mechanism is more stable, and the mold mechanism has mass production.

Description

[Technical Field]

[0001] This invention relates to the field of mold technology, and in particular to a double-section inclined pin mechanism. [Background Technology]

[0002] In modern mold technology, angled pins have become an indispensable ejection structure for ejecting molded products from the mold slot. Different products require drastically different angled pin ejection designs. Therefore, designing a mold that best suits the product and integrates with the mold's cooling channels and space is crucial. Currently, if the mold needs to reduce material loss to prevent shrinkage due to product appearance requirements, a barb will be created in the angled pin design. This prevents forward ejection, forcing a lateral ejection, which can easily cause the molded product to become stuck and difficult to remove. Furthermore, the lateral ejection angled pin design significantly occupies mold space, greatly impacting the mold's cooling channels and mechanism design. Moreover, with large amounts of material loss / barbling, a large angled pin movement angle makes it more prone to jamming, potentially causing production delays and affecting production efficiency.

[0003] Therefore, it is necessary to improve existing technologies. [Summary of the Invention]

[0004] The technical problem to be solved by this invention is that the lateral withdrawal of the inclined pin can easily cause the molded product to be clamped and difficult to remove, as well as problems such as easy jamming and large occupation of the mold structure.

[0005] The solution to the technical problem of this invention is: a double-section inclined pin mechanism, comprising: a slider and an inclined pin.

[0006] The slider includes a guide block, a limiting block, and a limiting rod. The guide block connects to the guide groove in the inclined pin, allowing it to move on the inclined surface at the bottom of the guide groove. The limiting block is located on both sides of the slider and extends outward from it. When the double-section inclined pin mechanism ejects, the extended portion abuts against the mold core to move the slider downward, and prevents it from falling and hitting the mold when the mechanism returns to its original position. The limiting rod passes through the guide block and engages with the sliding hole of the inclined pin, thus limiting the slider as a whole. The end of the slider connected to the inclined pin has an inclined surface that engages and abuts against the inclined surface of the inclined pin. The slider has a protruding barb at the end where the molded product is ejected.

[0007] The inclined pin has a guide groove, a barb groove, and a sliding hole. The guide groove is located at the end of the inclined pin and engages with the guide block in the slider. Its bottom has a height difference, providing a track for the guide block to move, allowing the guide block to move on the inclined surface created by the height difference. The sliding hole is symmetrically located on both sides of the guide groove and has high and low ends. The inclination angle of the high and low ends is set according to the bottom slope of the guide groove. The sliding hole provides a limiting rod in the slider to extend into it, providing a fixed range of movement for the limiting rod, thereby achieving the effect of limiting the slider. The barb groove is located on the side that contacts the molded product and is used to accommodate the barb of the molded product. The end of the inclined pin has a slope, which cooperates with and abuts against the slope of the slider.

[0008] The inclined pin and the slider are closely abutted by inclined surfaces, and the angle between the inclined surfaces and the horizontal plane is between 35° and 45°.

[0009] The benefits of this invention are that the double-section inclined pin mechanism has two directions of movement during the ejection process, thereby satisfying the molding of products with specific structures. The inclined pin only needs a small exit stroke to exit the barb. The forward retraction of the inclined pin does not affect the product removal. Moreover, the small inclination angle occupies less space, the overall mold mechanism is more stable, and it is more suitable for mass production. [Attached Image Description]

[0010] Figure 1 This is a schematic diagram of the structure of a double-section oblique pin mechanism according to the present invention.

[0011] Figure 2 This is a schematic diagram of the first state of a double-section oblique pin mechanism according to the present invention.

[0012] Figure 3 This is a schematic diagram of the second state of a double-section oblique pin mechanism according to the present invention.

[0013] Figure 4 This is a schematic diagram of the slider in a double-section inclined pin mechanism of the present invention.

[0014] Figure 5 This is a schematic cross-sectional view of the oblique pin in a double-section oblique pin mechanism of the present invention.

Detailed Implementation Methods

[0015] To further illustrate the technical means and effects of the present invention, the following detailed description is provided in conjunction with the embodiments of the present invention and their accompanying drawings.

[0016] Please see Figures 1-5 , Figure 1 A schematic diagram of a double-section inclined pin mechanism is shown. Figure 2 The diagram illustrates the first state of a double-section inclined pin mechanism according to the present invention. Figure 3 The diagram illustrates the second state of a double-section inclined pin mechanism according to the present invention. Figure 4The diagram illustrates the structure of the slider in a double-section inclined pin mechanism according to the present invention. Figure 5 A schematic diagram of the oblique pin structure in a double-section oblique pin mechanism of the present invention is shown.

[0017] Please see Figure 1 , Figure 4 and Figure 5 The present invention provides, comprising:

[0018] The slider (100) is provided with a guide block (101), a limiting rod (102), a limiting block (103), and a protruding barb (104). The guide block (101) is connected and engaged with the guide groove (201) in the inclined pin (200), and can move in the inclined surface of the guide groove (201). The limiting rod (102) passes through the guide block (101) and extends into the sliding hole (203) to engage with the sliding hole. (203) The slider (100) is positioned to limit the movement of the entire slider (100); the limiting block (103) is located on both sides of the slider (100) and extends outward from the slider (100) to abut against the mold core and move the slider (100) downward when the double-section inclined pin mechanism of the present invention is ejected, and to prevent it from falling and hitting the mold when the mechanism returns to its original position; the protruding barb (104) is located at one end of the slider (100) ejecting the molded product (300).

[0019] The end of the slider (100) connected to the inclined pin (200) has an inclined surface, which cooperates with and is close to the inclined surface of the inclined pin (200).

[0020] A slanted pin (200) is provided with a guide groove (201), a barb groove (202), and a sliding hole (203). The guide groove (201) engages with the guide block (101) in the slider (100) and has a height difference at its bottom, providing a track for the guide block (101) to move, allowing the guide block (101) to move on the inclined surface created by its height difference. Symmetrical sliding holes (203) are provided on both sides of the guide groove (201). 03) It has high and low ends, and the inclination angle of the high and low ends is set according to the slope of the guide groove (201); the sliding hole (203) provides the limiting rod (102) in the slider (100) to extend therein, which can provide the fixed movement range of the limiting rod (102) to achieve the limiting effect of the slider (100); the barb groove (202) is provided on the side of the inclined pin (200) that contacts the molded product (300) to accommodate the barb of the molded product (300).

[0021] The end of the inclined pin (200) connected to the slider (100) has an inclined surface, which cooperates with and is close to the inclined surface of the slider (100).

[0022] The inclined pin (200) and the slider (100) are close to each other with inclined surfaces, and the angle between the inclined surfaces and the horizontal plane is between 35° and 45°.

[0023] Please see Figure 2 , Figure 2 The diagram illustrates the first state of a double-section inclined pin mechanism of the present invention, in which the slider (100) and the inclined pin (200) are in the first position.

[0024] Please see Figure 3 , Figure 3 The diagram illustrates the second state of a double-section oblique pin mechanism of the present invention. At this time, the slider (100) and the oblique pin (200) move from the first position to the second position shown in the figure, so that the protruding barb (104) in the slider (100) exits the barb groove of the molded product (300), and the barb groove (202) in the oblique pin (200) moves away from the barb of the molded product (300).

[0025] Please refer to Figure 1 , 2 As shown in Figure 3, when ejecting the molded product (300), the invention changes from the first state to the second state by means of the upward push of the inclined pin, thereby achieving the purpose of ejecting the molded product (300).

[0026] It should be noted that the technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way.

[0027] Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without any creative effort, and these embodiments will all fall within the protection scope of the invention.

Claims

1. A double-section oblique pin mechanism, comprising: slider, slant pin; Its features are: The slider is provided with a guide block, a limiting block, and a limiting rod. The guide block is connected and cooperates with the guide groove in the inclined pin, and the guide block can move on the inclined surface at the bottom of the guide groove. The limiting block is provided on both sides of the slider and extends outward from the slider. The limiting rod passes through the guide block and is used to cooperate with the sliding hole of the inclined pin to make the slider as a whole perform a limiting function. The end of the slider connected to the inclined pin is provided with an inclined surface, which cooperates with and abuts against the inclined surface of the inclined pin. The inclined pin has a guide groove and a sliding hole. The guide groove is located at the end of the inclined pin and engages with the guide block in the slider. The bottom of the guide groove has a height difference, providing a track for the guide block to move, allowing the guide block to move on the inclined surface created by the height difference. The sliding hole is symmetrically arranged on both sides of the guide groove and has holes at high and low ends. The sliding hole is a through hole that is continuously inclined from the low end to the high end. Its inclination angle is set according to the bottom slope of the guide groove, and a limiting rod in the slider extends into it. It can provide a fixed range of movement for the limiting rod and limit the movement stroke of the slider relative to the inclined pin. The end of the inclined pin has an inclined surface that cooperates with and abuts against the inclined surface of the slider. The angle between the inclined surface and the horizontal plane is between 35° and 45°.

2. The double-section inclined pin mechanism according to claim 1, characterized in that: The inclined pin has a barb groove on the side that contacts the molded product to accommodate the barb of the molded product.

3. The double-section inclined pin mechanism according to claim 1, characterized in that: The slider has a protruding barb at one end where it ejects the molded product.

Images