Slide block stub bar ejection mechanism

Abstract

The utility model discloses a slider stub bar ejection mechanism which comprises a rear template and a die, and a slider is connected onto the rear template in a sliding manner; a convex block is arranged on one side, close to the mold, of the sliding block; a glue inlet groove communicated with the inner side of the mold is further formed in the upper end of the sliding block; the inner side of the sliding block is movably connected with an ejector pin; the upper end of the ejector pin is arranged in the glue inlet groove; the lower ends of the ejector pins are connected with ejector pin plates; the ejector pin is driven by the ejector pin plate to move up and down; the side, away from the convex block, of the sliding block is fixedly connected with an inclined guide column; a sliding groove matched with the ejector pin is formed in the rear mold plate; the sliding block and the ejector pin are driven by the inclined guide column to move left and right synchronously. According to the utility model, the glue feeding groove is formed in the sliding block, the ejector pin is arranged in the sliding block, and the sliding groove is formed in the rear mold plate, so that the sliding block drives the ejector pin to move while sliding backwards for demolding, and then the ejector pin plate is moved upwards to drive the ejector pin to eject a glue feeding stub bar in the glue feeding groove, so that the demolding of the glue feeding stub bar is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to a slider material head ejection mechanism. Background Art

[0002] Existing injection molds usually use the middle injection method when in use, and the slug remains in the middle of the product. During demoulding, the product and the slug are ejected at the same time, and the material needs to be sheared and separated later. In addition, the existing ejection mechanism is mostly set at the lower end of the product, and the slug is ejected with the product at the same time, which is not conducive to the demoulding of the slug. Utility Model Content

[0003] The purpose of the utility model is to solve the problems in the prior art and to propose a slider material head ejection mechanism.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A slider material head ejection mechanism includes a rear template and a mold, wherein a slider is slidably connected to the rear template; a protrusion is provided on the side of the slider close to the mold; a glue feed groove communicating with the inner side of the mold is further provided on the upper end of the slider; an ejector pin is movably connected to the inner side of the slider; the upper end of the ejector pin is arranged in the glue feed groove; the lower end of the ejector pin is connected to an ejector plate; the ejector pin is driven to move up and down by the ejector plate; an inclined guide column is fixedly connected to the side of the slider away from the protrusion; a slide groove matching the ejector pin is provided on the rear template; the slider and the ejector pin are driven to move left and right synchronously by the inclined guide column.

[0006] Preferably, the cross-section of the glue feed groove is set to be trapezoidal; the upper end of the ejector pin is connected to an ejector pin head with a trapezoidal cross-section; and the maximum width of the ejector pin head is not greater than the opening width of the glue feed groove; the cross-sectional width of the ejector pin matches the opening width of the glue feed groove.

[0007] Preferably, the ejector plate is provided with a sliding groove matching the ejector; the lower end of the ejector passes through the sliding groove and is slidably engaged with a fixed block; and the fixed block is fixedly connected to the lower end of the ejector plate; the lower end of the ejector is slidably engaged with the ejector plate through the fixed block.

[0008] Preferably, the upper end of the fixing block is provided with a slot matching the lower end of the ejector pin; the lower end of the ejector pin is slidably engaged with the fixing block through the slot; and the slot, sliding slot and sliding groove are of the same length.

[0009] Preferably, the oblique guide column is connected to a moving block; the rear template is provided with a moving groove matching the moving block; the oblique guide column is slidably engaged with the rear template through the moving block.

[0010] Preferably, a limiting block is inserted into the rear template; the lower end of the limiting block is connected to a spring; the upper end of the limiting block is provided with a protrusion protruding from the upper end of the rear template; and the protrusion is hemispherical; the lower end of the inclined guide column is provided with a groove matching the protrusion; the inclined guide column is clamped with the rear template through the groove.

[0011] Compared with the prior art, the present invention provides a slider material head ejection mechanism, which has the following beneficial effects:

[0012] The slider material head ejection mechanism is configured by setting a glue feed groove on the slider, arranging an ejector pin in the slider, and setting a slide groove in the rear template. The slider slides backward to demould while driving the ejector pin to move. After moving to a certain position, the ejector pin is driven to eject the glue feed head in the glue feed groove by moving the ejector plate upward, thereby facilitating demoulding of the glue feed head. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at point A.

[0015] In the figure: 10, rear template; 11, mold; 21, slider; 22, bump; 23, glue feed groove; 24, ejector; 25, ejector plate; 26, inclined guide column; 27, slide groove; 28, ejector head; 31, sliding groove; 32, fixed block; 33, slot; 41, moving block; 42, moving groove; 43, limit block; 44, spring; 45, protrusion; 46, groove. DETAILED DESCRIPTION

[0016] The following will refer to Figure 1-2 , the specific embodiment of the slider material head ejection mechanism in the utility model is introduced, including a rear template 10 and a mold 11, the rear template 10 is slidably connected with a slider 21; the slider 21 is provided with a protrusion 22 on the side close to the mold 11; the upper end of the slider 21 is also provided with a glue feeding groove 23 connected to the inner side of the mold 11; the inner side of the slider 21 is movably connected with an ejector pin 24; the upper end of the ejector pin 24 is arranged in the glue feeding groove 23; the lower end of the ejector pin 24 is connected to an ejector plate 25; the ejector pin 24 is driven to move up and down by the ejector plate 25; the slider 21 is fixedly connected with an inclined guide column 26 on the side away from the protrusion 22; the rear template 10 is provided with a slide groove 27 matching the ejector pin 24; the slider 21 and the ejector pin 24 are driven to move left and right synchronously by the inclined guide column 26.

[0017] After the front and rear molds are opened, the slider 21 is first slid backward by moving the inclined guide pillar 26 backward, and the ejector pin 24 is driven to slide synchronously. After the slider 21 slides to the set position, the ejector plate 25 is moved upward to eject the ejector pin 24 from the glue feeding head on the slider 21. The inclined guide pillar 26 and the ejector plate 25 should be provided with corresponding driving mechanisms to enable them to move.

[0018] To facilitate ejection of the glue feed head, the cross-section of the glue feed groove 23 is set to be trapezoidal; the upper end of the ejector pin 24 is connected to an ejector head 28 with a trapezoidal cross-section; and the maximum width of the ejector head 28 is not greater than the opening width of the glue feed groove 23; the cross-sectional width of the ejector pin 24 matches the opening width of the glue feed groove 23.

[0019] The ejector plate 25 is provided with a sliding groove 31 that matches the ejector pin 24. The lower end of the ejector pin 24 passes through the sliding groove 31 and is slidably engaged with a fixing block 32. The fixing block 32 is fixedly connected to the lower end of the ejector plate 25. The lower end of the ejector pin 24 is slidably engaged with the ejector plate 25 via the fixing block 32. The upper end of the fixing block 32 is provided with a slot 33 that matches the lower end of the ejector pin 24. The lower end of the ejector pin 24 is slidably engaged with the fixing block 32 via the slot 33. The slot 33, the sliding groove 31, and the sliding groove 27 are all the same length.

[0020] The inclined guide post 26 is connected to a moving block 41; a moving groove 42 is provided on the rear template 10 that matches the moving block 41. The inclined guide post 26 is slidably engaged with the rear template 10 via the moving block 41, facilitating the positioning and movement of the inclined guide post 26. A limiting block 43 is inserted into the rear template 10; a spring 44 is connected to the lower end of the limiting block 43; a protrusion 45 is provided at the upper end of the limiting block 43, protruding from the upper end of the rear template 10; and the protrusion 45 is hemispherical. The lower end of the inclined guide post 26 is provided with a groove 46 that matches the protrusion 45. The inclined guide post 26 is engaged with the rear template 10 via the groove 46, so that after moving to a certain position, the lower end of the inclined guide post 26 engages with the protrusion 45 to achieve a certain limit fixation. The moving distance between the protrusion 45 and the groove 46 should match the sliding groove 27.

[0021] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can, within the technical scope disclosed in the present invention, implement the present invention according to the technical solution and the structure of the present invention.

[0022] Any equivalent replacement or modification should be included in the protection scope of this utility model.

Claims

1. A slider head ejection mechanism, comprising a rear template (10) and a mold (11), characterized in that: The rear template (10) is slidably connected to a slider (21); a protrusion (22) is provided on the side of the slider (21) close to the mold (11); a glue feed groove (23) communicating with the inner side of the mold (11) is further provided at the upper end of the slider (21); an ejector pin (24) is movably connected to the inner side of the slider (21); the upper end of the ejector pin (24) is arranged in the glue feed groove (23); the lower end of the ejector pin (24) is connected to an ejector pin plate (25); the ejector pin (24) is driven to move up and down by the ejector pin plate (25); an inclined guide column (26) is fixedly connected to the side of the slider (21) away from the protrusion (22); a slide groove (27) matching the ejector pin (24) is provided on the rear template (10); the slider (21) and the ejector pin (24) are driven to move left and right synchronously by the inclined guide column (26).

2. A slider head ejection mechanism according to claim 1, characterized in that: The cross section of the glue feed groove (23) is set to be trapezoidal; the upper end of the ejector pin (24) is connected to an ejector pin head (28) with a trapezoidal cross section; and the maximum width of the ejector pin head (28) is not greater than the opening width of the glue feed groove (23); the cross-sectional width of the ejector pin (24) matches the opening width of the glue feed groove (23).

3. The slider head ejection mechanism according to claim 1, characterized in that: The ejector plate (25) is provided with a sliding groove (31) matching the ejector pin (24); the lower end of the ejector pin (24) passes through the sliding groove (31) and is slidably engaged with a fixing block (32); and the fixing block (32) is fixedly connected to the lower end of the ejector plate (25); the lower end of the ejector pin (24) is slidably engaged with the ejector plate (25) through the fixing block (32).

4. A slider head ejection mechanism according to claim 3, characterized in that: The upper end of the fixed block (32) is provided with a slot (33) matching the lower end of the ejector pin (24); the lower end of the ejector pin (24) is slidably engaged with the fixed block (32) through the slot (33); and the slot (33), the sliding slot (31) and the sliding slot (27) are of the same length.

5. The slider head ejection mechanism according to claim 1, characterized in that: The inclined guide column (26) is connected to a moving block (41); a moving groove (42) matching the moving block (41) is provided on the rear template (10); and the inclined guide column (26) is slidably engaged with the rear template (10) via the moving block (41).

6. The slider head ejection mechanism according to claim 1, characterized in that: A limiting block (43) is inserted into the rear template (10); a spring (44) is connected to the lower end of the limiting block (43); a protrusion (45) is provided at the upper end of the limiting block (43) and protrudes from the upper end of the rear template (10); and the protrusion (45) is hemispherical; a groove (46) is provided at the lower end of the inclined guide column (26) and matches the protrusion (45); and the inclined guide column (26) is engaged with the rear template (10) through the groove (46).

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