Rail type angle pin ejection mechanism

Abstract

The invention relates to a rail type angle pin ejection mechanism, which comprises a core insert provided with an inclined hole and a rail groove, the rail groove is arranged on the inner wall of one end, close to a product, of the inclined hole, the inclined hole is used for guiding when an angle pin moves, and the rail groove is used for guiding when a guide pin moves; the inclined pin is arranged in the inclined hole, a movable groove and a sliding hole are formed in the inclined pin, an ejector block is arranged in the movable groove in a sliding mode through a guide pin, the guide pin is arranged in the sliding hole in a sliding mode, and the side, making contact with a product, of the ejector block is in profile modeling with an inverted buckle structure of the product. When the angle pin is ejected out and retreats along the inclined hole of the male mold core, the guide pin drives the ejection block to move along the track groove, namely, the ejection block is static relative to the product, so that the ejection block retreats from an inverted buckling structure of the product, and after the guide pin is separated from the track groove, the ejection block and the angle pin retreat from the product together to complete demolding. And the angle pin can be stably ejected out and withdrawn from the product.

Description

Technical field

[0001] The invention relates to the technical field of mold mechanisms, in particular to a track-type oblique pin ejection mechanism. [Background Technology]

[0002] The inclined pin is a common ejection mechanism in the mold. Figures 1-2 As shown in the product 20, the shape of the product 20 is relatively complex, so the sticking force of the oblique pin is relatively large, but the undercut structure 30 of the product 20 is relatively weak, causing the product 20 to be easily deformed by pulling.

[0003] The ejection mechanism generally used is an ejector on top of an inclined pin, but the general inclined pin ejection mechanism requires the inclined pin to be relatively large, so the required space in the mold is relatively large, resulting in a large mold volume and high production costs.

[0004] In view of this, it is necessary to provide a track-type inclined pin ejection mechanism to solve the above problems. [Summary of the invention]

[0005] The technical problem addressed by the present invention is that a product with a complex shape has a relatively strong sticking force from the inclined pins, but the undercut structure is relatively weak, making the product easily deformed by pulling. Conventional ejection mechanisms, which incorporate an ejector on top of the inclined pins, require a relatively large volume, thus requiring more space within the mold, resulting in a bulky mold and high production costs. Therefore, the present invention provides a track-type inclined pin ejection mechanism to address this problem.

[0006] The present invention solves the technical problem by providing a track-type inclined pin ejection mechanism, comprising:

[0007] The male mold core is provided with an inclined hole in the male mold core. The inclined hole is used to guide the movement of the inclined pin. A track groove is provided on the inner wall of the inclined hole near the end of the product. The track groove is used to guide the movement of the guide pin. The track groove is provided with a guide surface at the end near the product. The guide surface is used to push the ejector block to return to its original position when the mold is closed after the ejector block slides in the movable groove of the inclined pin to eject the product.

[0008] The inclined pin is slidingly arranged in the inclined hole. The inclined pin is shaped like the product structure on the side in contact with the product. A movable groove and a sliding hole are provided in the inclined pin. A top block is slidingly provided in the movable groove. A mounting hole is provided on the top block. The mounting hole and the guide pin are detachably connected. The positional relationship between the mounting hole and the guide pin is an interference fit. The top block is arranged in the movable groove through the guide pin. The guide pin is slidingly arranged in the sliding hole. The side of the top block in contact with the product is shaped like the undercut structure of the product. The guide pin drives the top block to slide in the track groove of the male mold core and the sliding hole of the inclined pin, which is used to make the top block slide in its movable groove when the inclined pin moves, thereby causing the top block to exit and eject the undercut structure of the product.

[0009] Preferably, the sliding hole includes but is not limited to a waist-shaped hole.

[0010] The beneficial effect of the present invention is that the present invention adopts a track-type inclined pin ejection mechanism, which adopts a ejection block provided in the movable groove of the inclined pin through the sliding of the guide pin. When the inclined pin is ejected and retreated along the inclined hole of the male mold core, the guide pin drives the ejection block to move in the vertical direction of the track groove, so that the ejection block is stationary relative to the product, thereby realizing the ejection effect of the ejection block on the inverted structure of the product. When the guide pin is separated from the track groove, the ejection block and the inclined pin retreat together, and the ejection block and the inclined pin exit the product together to complete demolding. This mechanism can reduce the mucous membrane force of the inclined pin on the product, so that the inclined pin can be stably ejected and exit the product.

Brief Description of the Drawings

[0011] Figure 1 It is a structural diagram of a known product.

[0012] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0013] Figure 3 It is a structural schematic diagram of a track-type oblique pin ejection mechanism of the present invention.

[0014] Figure 4 yes Figure 3 Cross-section of AA.

[0015] Figure 5 It is a partial structural diagram of the oblique pin in the present invention.

[0016] Figure 6 It is a cross-sectional view before the inclined pin ejects the product in the present invention.

[0017] Figure 7 It is a cross-sectional view of the guide pin of the present invention disengaging from the track groove.

[0018] Figure 8 It is a cross-sectional view after the inclined pin and the ejector block eject the product in the present invention.

[0019] Figure 9 It is a structural diagram of the male mold core in the present invention.

[0020] Figure 10 yes Figure 9 Enlarged view of point B in the middle. [Specific implementation method]

[0021] 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.

[0022] The present invention provides a track-type oblique pin ejection mechanism, comprising:

[0023] The male mold core 100 has an inclined hole 101 therein for guiding the movement of the inclined pin 110. A track groove 102 is provided on the inner wall of the inclined hole 101 near the end of the product 20 for guiding the movement of the guide pin 112. A guide surface 103 is provided on the end of the track groove 102 near the product 20 for pushing the ejector block 113 back into position when the mold is closed after the ejector block 113 slides within the movable groove 114 of the inclined pin 110 to eject the product.

[0024] The inclined pin 110 is slidably arranged in the inclined hole 101. The inclined pin 110 is contoured with the product 20 structure on the side in contact with the product 20. A movable groove 114 and a sliding hole 111 are provided in the inclined pin 110. A top block 113 is slidably provided in the movable groove 114. A mounting hole 115 is provided on the top block 113. The mounting hole 115 is detachably connected to the guide pin 112. The positional relationship between the mounting hole 115 and the guide pin 112 is an interference fit. The top block 113 is connected to the guide pin 112 through the guide pin 111. 2 is arranged in the movable groove 114, the guide pin 112 is slidably arranged in the sliding hole 111, and the side of the ejector block 113 that contacts the product 20 is contoured to the undercut structure 30 of the product 20. The guide pin 112 drives the ejector block 113 to slide in the track groove 102 of the male mold core 100 and the sliding hole 111 of the oblique pin 110, so that when the oblique pin 110 moves, the ejector block 113 slides in its movable groove 114, thereby causing the ejector block 113 to withdraw and eject the undercut structure 30 of the product 20.

[0025] The sliding hole 111 includes but is not limited to a waist-shaped hole.

[0026] The working process of the present invention is as follows: when the product 20 is ejected, the inclined pin 110 first slides along the inclined hole 101 of the male mold core 100 under the action of a power device (not shown in the figure), and at this time the guide pin 112 drives the ejector block 113 to slide along the track groove 102. At the same time, the guide pin 112 slides in the sliding hole 111 of the inclined pin 110, thereby driving the ejector block 113 to move in the movable groove 114 of the inclined pin 110, until the guide pin 112 disengages from the track groove 102 and the ejector block 113 is ejected and exits the inverted structure 30 of the product 20. At this time, the mucosal force of the inclined pin 110 on the product 20 is reduced, and then the inclined pin 110 continues to move until it is completely ejected and exits the product 20. When the mold is closed, the ejector block 113 is reset by being pushed to its original position by the guide surface 103 of the track groove 102.

[0027] The beneficial effect of the present invention is that the present invention adopts a track-type inclined pin ejection mechanism, which adopts a top block 113 that slides in the movable groove 114 of the inclined pin 110 through the guide pin 112. When the inclined pin 110 is ejected and retreated along the inclined hole 101 of the male mold core 100, the guide pin 112 drives the top block 113 to move in the vertical direction of the track groove 102, so that the top block 113 is stationary relative to the product 20, thereby realizing the ejection effect of the top block 113 on the inverted structure 30 of the product 20. When the guide pin 112 is separated from the track groove 102, the top block 113 and the inclined pin 110 retreat together, and the top block 103 and the inclined pin 110 withdraw from the product 20 together to complete demolding. This mechanism can reduce the mucous membrane force of the inclined pin 110 on the product 20, so that the inclined pin 110 can be stably ejected and withdrawn from the product 20.

[0028] It should be pointed out that the present invention is not limited to the above-mentioned implementation mode, and any simple modification, equivalent change and modification made to the above-mentioned embodiment based on the technical solution of the present invention by any technician familiar with the profession shall fall within the protection scope of the present invention.

Claims

1. A track-type inclined pin ejection mechanism, characterized in that: include: A male mold core, wherein the male mold core is provided with an inclined hole and a track groove, wherein the track groove is provided on the inner wall of the inclined hole near one end of the product, the inclined hole is used for guiding the inclined pin during movement, and the track groove is used for guiding the guide pin during movement; An oblique pin is slidably arranged in the oblique hole, and the oblique pin is contoured to the product structure on the side in contact with the product. A movable groove and a sliding hole are provided in the oblique pin, and a top block is slidingly provided in the movable groove. The top block is arranged in the movable groove through the guide pin, and the guide pin is slidably arranged in the sliding hole. The side of the top block in contact with the product is contoured to the inverted structure of the product.

2. A track-type oblique pin ejection mechanism according to claim 1, characterized in that: The track groove is provided with a guide surface at one end close to the product, and the guide surface is used to push the top block to reset when the mold is closed.

3. The track-type oblique pin ejection mechanism according to claim 1, characterized in that: The top block is provided with a mounting hole, the mounting hole is detachably connected to the guide pin, and the positional relationship between the mounting hole and the guide pin is an interference fit.

4. The track-type oblique pin ejection mechanism according to claim 1, characterized in that: The sliding hole is a waist-shaped hole.

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