Multi-sliding-block balance ejection mechanism of motorcycle mudguard injection mold

Abstract

The utility model provides a multi-slider balance ejection mechanism of a motorcycle mudguard injection mold. The multi-slider balance ejection mechanism comprises a base, a lower mold base is arranged at the top of the base, a molding cavity is formed between a middle molding slider and a side molding slider, an outer convex block is arranged on the side surface of the middle molding slider, and an injection molding material discharge port and a side ejector pin are arranged on the surface of the outer convex block; the middle forming sliding block and the side forming sliding block which can be pulled out are arranged on the top of the lower die base, the middle forming sliding block, the side forming sliding block, the upper die base and the lower die base are matched to form the whole forming cavity, injection molding can be conducted on a fender in the forming cavity, and after injection molding is completed, the side forming sliding block and the middle forming sliding block sequentially slide out. The injection molding part in the forming cavity is directly ejected out through the ejection block, a multi-sliding-block structure is adopted, the situation of shell jamming is avoided during ejection and demolding, and the ejection smoothness and precision are high.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and relates to a multi-slider balanced ejection mechanism for injection molds of motorcycle mudguards. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of complex-shaped parts. Specifically, it involves injecting molten plastic into a mold cavity under high pressure using an injection molding machine, followed by cooling and solidification to obtain the molded product. Plastic storage boxes are also manufactured using injection molds. However, in existing plastic storage box molds, because the molding area of ​​the cavity is fixed and cannot slide during the injection molding process, the plastic part is prone to jamming during ejection, resulting in poor ejection smoothness and precision. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-slider balanced ejection mechanism for motorcycle mudguard injection molds, so as to solve the problems mentioned in the background art.

[0004] The objective of this utility model can be achieved through the following technical solution: a multi-slider balanced ejection mechanism for a motorcycle mudguard injection mold, comprising a base, a lower mold base, and an upper mold base. The lower mold base is provided on the top of the base. An injection cavity is formed in the middle of the lower mold base. Side forming sliders are movably arranged on both sides of the injection cavity. A central forming slider is movably arranged between the two side forming sliders. A forming chamber is formed between the central forming slider and the side forming sliders. An external protrusion is provided on the side of the central forming slider. An injection outlet and a side ejector pin are provided on the surface of the external protrusion.

[0005] In the multi-slider balanced ejection mechanism of the above-mentioned motorcycle mudguard injection mold, the bottom of the side forming slider is provided with an auxiliary slide plate, the side of the injection cavity is provided with a limiting slide groove, and the bottom end of the auxiliary slide plate slides inside the limiting slide groove.

[0006] In the multi-slider balanced ejection mechanism of the above-mentioned motorcycle mudguard injection mold, a push block is movably provided at the end of the middle forming slider, and an auxiliary forming block is movably connected to the end of the middle forming slider through the push block.

[0007] In the above-mentioned multi-slider balanced ejection mechanism for motorcycle mudguard injection mold, a feeding port is provided at the top center of the middle forming slider, an injection liquid flow channel is provided inside the middle forming slider, and the feeding port is connected to the injection plastic discharge port through the injection liquid flow channel.

[0008] In the above-mentioned multi-slider balanced ejection mechanism for motorcycle mudguard injection mold, a bottom groove is provided at the bottom end of the middle forming slider, and two movable plates are movably arranged inside the bottom groove, with one end of the side ejector pin connected to the side of the movable plate.

[0009] In the above-mentioned multi-slider balanced ejection mechanism for motorcycle mudguard injection mold, an auxiliary cylinder is provided at the inner side of the bottom groove, one end of the push block is movably sleeved on the end of the moving plate, and one end of the push block passes through the moving plate and is connected to the output end of the auxiliary cylinder. A support spring is provided between the push block and the moving plate.

[0010] In the multi-slider balanced ejection mechanism of the above-mentioned motorcycle fender injection mold, a top block is provided at the bottom of the molding chamber, and a connecting end seat is provided at one end of the middle molding slider.

[0011] Compared with the prior art, the advantages of the multi-slider balanced ejection mechanism of the motorcycle fender injection mold of this utility model are:

[0012] 1. This application provides a removable central molding slider and a side molding slider at the top of the lower mold base. The central molding slider, the side molding slider, and the upper and lower mold bases cooperate to form the entire molding chamber. The mudguard can be injection molded inside the molding chamber. After injection molding, the side molding slider and the central molding slider slide out in sequence. The injection molded part inside the molding chamber is directly ejected by the top block. The multi-slider structure prevents jamming during ejection and demolding, resulting in smooth ejection and high precision.

[0013] 2. This application provides a plastic injection outlet and a side ejector pin on the side protrusion of the central molding slider. During plastic injection, the material can be discharged directly into the molding cavity through the plastic injection outlet. In this way, when the internal flow channel is blocked, the central molding slider can be directly pulled out for maintenance. At the same time, for the molding cavity with the external protrusion structure, it is not necessary to set a slanted ejector structure on the lower mold base during material discharge. The side ejector pin can be directly set on the central molding slider. During demolding, the injection molded part can be directly ejected laterally by the side ejector pin and then pushed out by the ejector block to complete the entire demolding process. Since the side ejector pin is set on the central molding slider, maintenance is convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the multi-slider balanced ejection mechanism of the injection mold for motorcycle mudguards.

[0015] Figure 2 This is a schematic diagram of the molding chamber structure of the multi-slider balanced ejection mechanism of the injection mold for motorcycle mudguards of this utility model.

[0016] Figure 3This is a schematic diagram of the top of the lower mold base of the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model.

[0017] Figure 4 This is a schematic diagram of the middle forming slider structure of the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model.

[0018] Figure 5 This is a schematic diagram of the bottom structure of the middle forming slider of the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model.

[0019] Figure 6 This is a schematic diagram of the moving plate structure of the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model.

[0020] In the diagram, 1. Base; 2. Lower mold base; 3. Upper mold base; 4. Molding chamber; 5. Middle molding slider; 6. Auxiliary slide plate; 7. Side molding slider; 8. Limiting slide groove; 9. Injection cavity; 10. Ejector block; 11. Connecting end seat; 12. Outer protrusion; 13. Injection plastic discharge; 14. Side ejector pin; 15. Auxiliary molding block; 16. Feed port; 17. Bottom groove; 18. Support spring; 19. Auxiliary cylinder; 20. Moving plate; 21. Push block. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] The multi-slider balanced ejection mechanism of the injection mold for motorcycle mudguards includes a base 1, a lower mold base 2, and an upper mold base 3. The lower mold base 2 is located on the top of the base 1. An injection cavity 9 is opened in the middle of the lower mold base 2. Side molding sliders 7 are movably arranged on both sides of the injection cavity 9. A central molding slider 5 is movably arranged between the two side molding sliders 7. A molding chamber 4 is formed between the central molding slider 5 and the side molding sliders 7. An external protrusion 12 is provided on the side of the central molding slider 5. An injection outlet 13 and a side ejector pin 14 are provided on the surface of the external protrusion 12.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has an auxiliary slide plate 6 at the bottom of the side forming slider 7, a limit slide groove 8 on the side of the injection cavity 9, and the bottom end of the auxiliary slide plate 6 slides inside the limit slide groove 8. The side forming slider 7 is pushed by the side cylinder on the outside of the lower mold base 2.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has a push block 21 movably arranged at the end position of the middle forming slider 5, and an auxiliary forming block 15 is movably connected to the end of the middle forming slider 5 through the push block 21.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has a feeding port 16 at the top center of the middle forming slider 5, and an injection liquid flow channel is provided inside the middle forming slider 5. The feeding port 16 is connected to the injection plastic discharge port 13 through the injection liquid flow channel.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has a bottom groove 17 at the bottom end of the middle forming slider 5. Two movable plates 20 are movably arranged inside the bottom groove 17, and one end of the side ejector pin 14 is connected to the side of the movable plate 20.

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has an auxiliary cylinder 19 located on the inner side of the bottom groove 17. One end of the push block 21 is movably sleeved on the end of the moving plate 20, and one end of the push block 21 passes through the moving plate 20 and is connected to the output end of the auxiliary cylinder 19. A support spring 18 is provided between the push block 21 and the moving plate 20. During demolding, the push block 21 is first pushed by the auxiliary cylinder 19. The push block 21 directly ejects the auxiliary forming block 15 outward. While the push block 21 moves, it can also drive the moving plate 20 to move, thereby pushing the side ejector pin 14. The side ejector pin 14 pushes the injection molded part to the side, so that the injection molded part is not limited by the outer protrusion 12.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the multi-slider balanced ejection mechanism of the motorcycle mudguard injection mold of this utility model has a top block 10 at the bottom of the molding chamber 4 and a connecting end seat 11 at one end of the middle molding slider 5. The top block 10 ejects the injection molded part from bottom to top. This is a publicly available structure and will not be described in detail. One end of the connecting end seat 11 is mainly connected to an external cylinder, and the entire middle molding slider 5 can be moved by the external cylinder.

[0029] The specific operation is as follows: A removable central molding slider 5 and a side molding slider 7 are set on the top of the lower mold base 2. The central molding slider 5, the side molding slider 7 and the upper and lower mold bases 2 cooperate to form the entire molding chamber 4. During injection molding, the injection liquid is added from the top injection port of the upper mold base 3. The injection liquid enters the inside of the feed port 16 and flows to the injection outlet 13 through the internal flow channel. The material can be directly discharged into the molding chamber 4 through the injection outlet 13. After the injection molding and cooling are completed, the side molding slider 7 and the central molding slider 5 slide out in sequence. The injection molded part can be directly ejected laterally by the side ejector pin 14 and then pushed out by the ejector block 10 to complete the demolding. This application adopts a multi-slider structure, which will not cause jamming during ejection and demolding, and has high ejection smoothness and accuracy.

[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A multi-slider balanced ejection mechanism for a motorcycle fender injection mold, comprising a base (1), a lower mold base (2), and an upper mold base (3), characterized in that, The base (1) is provided with a lower mold base (2) at the top. The lower mold base (2) has an injection cavity (9) in the middle. Side molding sliders (7) are movably arranged on both sides of the injection cavity (9). A middle molding slider (5) is movably arranged between the two side molding sliders (7). A molding chamber (4) is formed between the middle molding slider (5) and the side molding sliders (7). An external protrusion (12) is provided on the side of the middle molding slider (5). An injection outlet (13) and a side ejector pin (14) are provided on the surface of the external protrusion (12).

2. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 1, characterized in that, The bottom of the side forming slider (7) is provided with an auxiliary slide plate (6), the side of the injection cavity (9) is provided with a limiting slide groove (8), and the bottom end of the auxiliary slide plate (6) slides inside the limiting slide groove (8).

3. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 1, characterized in that, A push block (21) is movably provided at the end of the middle forming slider (5), and an auxiliary forming block (15) is movably connected to the end of the middle forming slider (5) through the push block (21).

4. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 1, characterized in that, The middle part of the top of the middle molding slider (5) is provided with a feeding port (16), the middle molding slider (5) is provided with an injection liquid flow channel, and the feeding port (16) is connected to the injection plastic discharge port (13) through the injection liquid flow channel.

5. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 3, characterized in that, The bottom end of the middle forming slider (5) is provided with a bottom groove (17), and two movable plates (20) are movably arranged inside the bottom groove (17), and one end of the side ejector pin (14) is connected to the side of the movable plate (20).

6. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 5, characterized in that, An auxiliary cylinder (19) is provided on the inner side of the bottom groove (17). One end of the push block (21) is movably sleeved on the end of the moving plate (20), and one end of the push block (21) passes through the moving plate (20) and is connected to the output end of the auxiliary cylinder (19). A support spring (18) is provided between the push block (21) and the moving plate (20).

7. The multi-slider balanced ejection mechanism for motorcycle fender injection molds according to claim 1, characterized in that, A top block (10) is provided at the bottom of the molding chamber (4), and a connecting end seat (11) is provided at one end of the middle molding slider (5).

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