Rapid demolding device for motorcycle lamp

Abstract

The invention discloses a quick demolding device for a motorcycle lamp, and belongs to the technical field of injection molds, the quick demolding device comprises an upper mold core and a lower mold core, an injection molding cavity is formed between the upper mold core and the lower mold core, and the injection molding cavity comprises a lamp body cavity formed in the center of the mold and a lamp handle cavity surrounding the outer side of the lamp body cavity; a lower main groove is formed in the bottom of the lamp handle cavity, a lower main push plate is arranged in the lower main groove in a sliding and sealing mode, the lower main push plate is connected with a lower guide rod, the lower guide rod is arranged in a lower guide groove formed in the lower mold core in a sliding mode, and the lower guide rod is connected to the bottom of the lower guide groove through a first elastic supporting device; a lower pushing device is mounted in the lower mold core; after the upper mold core is matched with the lower mold core, the lower pushing device can push the lower guide rod and the lower main pushing plate to move downwards. The lower pushing device disclosed by the invention can push the lower guide rod and the lower main pushing plate to move downwards, and can give way to the lamp handle cavity, so that the lamp handle can be smoothly subjected to injection molding.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and particularly relates to a rapid demoulding device for a motorcycle lamp. Background Art

[0002] With the continuous development of injection molding technology, motorcycle lamp injection molds have gradually become the primary method for manufacturing motorcycle lamps. Injection molds offer advantages such as high production efficiency, as they can be automated, significantly improving production efficiency. However, existing injection molds can easily cause the upper and lower sides of the lamp to adhere to the mold during demolding, thus affecting production efficiency. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a quick demoulding device for a motorcycle lamp, which can solve the above technical problems.

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

[0005] The present invention discloses a quick demolding device for a motorcycle lamp, comprising an upper mold core and a lower mold core, an injection molding cavity being formed between the upper mold core and the lower mold core, the injection molding cavity comprising a lamp body cavity formed in the center of the mold and a lamp handle cavity surrounding the outside of the lamp body cavity; a lower main groove is provided at the bottom of the lamp handle cavity, a lower main push plate is provided in the lower main groove for sliding sealing, the lower main push plate is connected to a lower guide rod, the lower guide rod is slidably provided in a lower guide groove provided in the lower mold core, the lower guide rod is connected to the bottom of the lower guide groove through a first elastic support device, and a lower pushing device is simultaneously installed in the lower mold core; after the upper mold core and the lower mold core cooperate, the lower pushing device can push the lower guide rod and the lower main push plate to move downward.

[0006] Furthermore, the lower pushing device includes a lower auxiliary push plate, a second elastic support device, a lower piston and a linkage assembly. A lower channel and a lower compression channel are provided in the lower mold core. The lower piston sliding seal is installed in the lower channel. A through hole is provided on the lower piston for the lower guide rod to slide through. The lower piston divides the lower channel into an upper piston chamber and a lower piston chamber; a lower auxiliary groove is provided on the upper side of the lower mold core. The lower auxiliary push plate sliding seal is arranged in the lower auxiliary groove. The lower auxiliary push plate is connected to the lower auxiliary groove through the second elastic support device. The bottom of the lower auxiliary groove is connected to the upper piston chamber of the lower channel through the lower compression channel. A linkage assembly is installed between the lower guide rod and the lower piston.

[0007] Furthermore, the linkage assembly includes a tapered sleeve and a limit ring, the limit ring is located on the upper side of the lower piston and fixed in the lower channel, the tapered sleeve is made of flexible and telescopic material, the lower end of the tapered sleeve is fixedly connected to the lower piston, the upper end of the tapered sleeve forms a center hole that cooperates with the lower guide rod, and the outer wall of the lower guide rod is also provided with a ring groove that cooperates with the tapered sleeve.

[0008] Furthermore, an annular sealing ring is installed on the inner side of the central hole.

[0009] Furthermore, an upper main groove is provided on the top of the lamp handle cavity, and an upper main push plate is provided in the upper main groove for sliding sealing. The upper main push plate is connected to an upper guide rod, and the upper guide rod is slidably provided in the upper guide groove provided in the upper mold core. The upper guide rod is connected to the bottom of the upper guide groove through a third elastic support device, and an upper pushing device is also installed in the upper mold core; after the upper mold core and the lower mold core are matched, the upper pushing device can push the upper guide rod and the upper main push plate to move upward.

[0010] Furthermore, the upper pushing device includes an upper auxiliary push plate, a fourth elastic support device, and an upper piston. An upper channel and an upper compression channel are provided in the upper mold core. The upper piston sliding seal is installed in the upper channel. The upper piston is connected to the upper guide rod. The upper piston divides the upper channel into an upper piston chamber and a lower piston chamber. An upper auxiliary groove is provided on the lower side of the upper mold core. The upper auxiliary push plate sliding seal is arranged in the upper auxiliary groove. The upper auxiliary push plate is connected to the upper auxiliary groove through the fourth elastic support device. The bottom of the upper auxiliary groove is connected to the lower piston chamber of the upper channel through the upper compression channel.

[0011] Furthermore, the upper die core and the lower die core are installed in the upper pressing plate and the lower pressing plate respectively, and cooling channels are installed in the upper pressing plate and the lower pressing plate at the same time.

[0012] The beneficial effects of the present invention are:

[0013] The present invention discloses a rapid demolding device for a motorcycle lamp. A lower main push plate is arranged at the bottom of the lamp handle cavity. When the joint surfaces of the upper mold core and the lower mold core are matched, the lower main push plate cooperates with the upper mechanism to make way for the mold cavity of the vehicle lamp. The lower pushing device can push the lower guide rod and the lower main push plate to move downward, making way for the lamp handle cavity, so that the lamp handle can be smoothly injection-molded.

[0014] In the rapid demoulding device disclosed in the present invention, after the upper mold core and the lower mold core are separated, the lower push plate can be quickly displaced upward under the action of the first elastic support device, thereby pushing the lamp handle that has been injection-molded, so that the headlight can be quickly separated from the lower mold core, achieving the effect of rapid demoulding, reducing the adhesion between the mold and the headlight, and thus greatly improving the production efficiency of motorcycle lights.

[0015] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0017] Figure 1 It is a structural schematic diagram of the demoulding device of the present invention;

[0018] Figure 2 Schematic diagram of the structure of the upper mold core and the lower mold core of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view at point A;

[0020] Figure 4 It is a structural diagram of the tapered sleeve.

[0021] The markings in the accompanying drawings are as follows: upper mold core 1, lower mold core 2, lamp body cavity 3, lamp handle cavity 4, lower main groove 5, lower main push plate 6, lower guide rod 7, lower guide groove 8, first elastic support device 9, lower auxiliary push plate 10, second elastic support device 11, lower piston 12, lower channel 13, lower compression channel 14, upper piston cavity 15, lower piston cavity 16, lower auxiliary groove 17, tapered sleeve 18, limit ring 19, ring groove 20, sealing ring 21, upper main groove 22, upper main push plate 23, upper guide rod 24, upper guide groove 25, upper auxiliary push plate 26, fourth elastic support device 27, upper piston 28, upper channel 29, upper compression channel 30, upper auxiliary groove 31, upper pressure plate 32, lower pressure plate 33, third elastic support device 34. DETAILED DESCRIPTION

[0022] like Figures 1 to 4 As shown, the present invention discloses a rapid demolding device for a motorcycle lamp. The device comprises an upper mold core 1 and a lower mold core 2. The upper mold core 1 is positioned above the lower mold core 2, and the joint surface between the upper mold core 1 and the lower mold core 2 is flat. An injection molding cavity is formed between the upper mold core 1 and the lower mold core 2. The upper mold core 1 and the lower mold core 2 are mounted within an upper pressing plate 32 and a lower pressing plate 33, respectively. Cooling channels are installed within both the upper pressing plate 32 and the lower pressing plate 33. The provision of cooling channels accelerates the cooling of the motorcycle lamp after injection molding, thereby facilitating faster demolding.

[0023] In an embodiment of the present invention, the injection molding cavity includes a lamp body cavity 3 formed in the center of the mold and a lamp handle cavity 4 arranged around the outside of the lamp body cavity 3. The portion injected into the lamp body cavity 3 forms the lamp body, and the lamp body has an arc-shaped cover structure. The portion injected into the lamp handle cavity 4 forms the lamp handle, which extends outward from the outer edge of the cover and is parallel to the horizontal plane. The lamp handle and the lamp body are integrally formed, which can be easily demolded.

[0024] Specifically, a lower main groove 5 is provided at the bottom of the lamp handle cavity 4. The cross-section of the lower main groove 5 is circular or square. A lower main push plate 6 is provided in the lower main groove 5 for sliding sealing. A sealing structure is provided between the lower main push plate 6 and the lower main groove 5, which plays a sealing role when the lower main push plate 6 slides up and down.

[0025] The lower end of the lower main push plate 6 is connected to a lower guide rod 7, which has a circular cross-section and is slidably disposed within a lower guide groove 8 defined within the lower mold core 2. The lower guide rod 7 is connected to the bottom of the lower guide groove 8 via a first elastic support device 9, which is a spring. A lower push device is also installed within the lower mold core 2. After the upper mold core 1 and the lower mold core 2 mate, the upper mold core 1 triggers the lower push device, which pushes the lower guide rod 7 and the lower main push plate 6 downward. This allows the lower main push plate 6 to move downward a certain distance, making way for the lamp handle cavity 4 and keeping the bottom plane of the lamp handle cavity 4 level, allowing the lamp handle to be smoothly injected.

[0026] In the device disclosed in the present invention, after the injection molding is completed and the upper mold core 1 and the lower mold core 2 are separated, the lower push plate can be quickly displaced upward under the action of the first elastic support device 9, thereby pushing the lamp handle that has been injection molded, so that the headlight can be quickly separated from the lower mold core 2, playing a role of rapid demolding, reducing the adhesion between the mold and the headlight, thereby greatly improving the production efficiency of motorcycle lights.

[0027] In some other embodiments, the lower pushing device can adopt a hydraulic cylinder, and the switch of the hydraulic cylinder is set between the upper mold core 1 and the lower mold core 2, so that it can play a triggering role. The output end of the hydraulic cylinder is connected to the lower guide rod 7, which can drive the lower guide rod 7 to move downward. However, the hydraulic cylinder is not very suitable for the working environment inside the mold. When installed in the mold core, it is easy to cause the overall installation structure to be more complicated and the control during operation is not very stable.

[0028] In this embodiment, in order to provide a more stable control structure, the lower pushing device disclosed in the present invention includes a lower auxiliary push plate 10, a second elastic support device 11, a lower piston 12 and a linkage assembly. The lower auxiliary push plate 10 is located on one side of the lower main push plate 6. A lower channel 13 and a lower compression channel 14 are opened in the lower mold core 2. The lower channel 13 is a straight channel. The lower piston 12 is slidingly sealed and installed in the lower channel 13. The lower piston 12 can be displaced axially along the lower channel 13 to compress the two spaces.

[0029] Among them, a through hole is provided on the lower piston 12 for the lower guide rod 7 to slide through, and the lower piston 12 divides the lower channel 13 into an upper piston chamber 15 and a lower piston chamber 16; a lower auxiliary groove 17 is provided on the upper side of the lower mold core 2, and the lower auxiliary push plate 10 is slidingly sealed in the lower auxiliary groove 17, and the lower auxiliary push plate 10 is connected to the lower auxiliary groove 17 through a second elastic support device 11, and the bottom of the lower auxiliary groove 17 is connected to the upper piston chamber 15 of the lower channel 13 through a lower compression channel 14, and a linkage assembly is installed between the lower guide rod 7 and the lower piston 12, and the linkage assembly is used to link the lower guide rod 7 and the lower piston 12. When the lower auxiliary push plate 10 is compressed downward, the linkage assembly can act on the lower guide rod 7, so that the lower guide rod 7 is displaced downward by a certain distance, thereby avoiding the lamp handle cavity 4.

[0030] In this embodiment, the linkage assembly includes a tapered sleeve 18 and a retaining ring 19. The tapered sleeve 18 is a tapered structure that is smaller at the top and larger at the bottom. The retaining ring 19 is located above the lower piston 12 and fixed within the lower passage 13, acting as a position limiter for the lower piston 12. The tapered sleeve 18 is made of a flexible, elastic material and can deform to a certain extent under the influence of air pressure. The lower end of the tapered sleeve 18 is fixedly connected to the lower piston 12. The upper end of the tapered sleeve 18 forms a central hole that mates with the lower guide rod 7. The outer wall of the lower guide rod 7 also includes an annular groove 20 that mates with the tapered sleeve 18.

[0031] After the upper die core 1 and the lower die core 2 are separated, the lower guide rod 7 moves upward under the action of the first elastic support device 9, and the lower guide rod 7 drives the conical sleeve 18 to move upward until the conical sleeve 18 is limited by the limit ring 19. Since the pressure on the upper side of the conical sleeve 18 is released, the conical sleeve 18 is separated from the lower guide rod 7 at this time, and the lower guide rod 7 continues to move upward to cope with the next compression cycle.

[0032] In this embodiment, an annular sealing ring 21 is installed on the inner side of the central hole, which can be more conducive to the sealing between the tapered sleeve 18 and the lower guide rod 7.

[0033] In this embodiment, similar to the lower main push plate 6, the present invention provides an upper main groove 22 at the top of the lamp handle cavity 4, and an upper main push plate 23 is slidingly and sealedly arranged in the upper main groove 22. The upper main push plate 23 is connected to an upper guide rod 24, and the upper guide rod 24 is slidingly arranged in an upper guide groove 25 opened in the upper mold core 1. The upper guide rod 24 is connected to the bottom of the upper guide groove 25 through a third elastic support device 34, and an upper pushing device is also installed in the upper mold core 1; after the upper mold core 1 and the lower mold core 2 are matched, the upper pushing device can push the upper guide rod 24 and the upper main push plate 23 to move upward.

[0034] In this embodiment, similar to the lower pushing device, the upper pushing device includes an upper auxiliary pushing plate 26, a fourth elastic supporting device 27, and an upper piston 28. An upper channel 29 and an upper compression channel 30 are opened in the upper mold core 1. The upper piston 28 is slidingly sealed and installed in the upper channel 29. The upper piston 28 is connected to the upper guide rod 24. The upper piston 28 divides the upper channel 29 into an upper piston chamber 15 and a lower piston chamber 16; an upper auxiliary groove 31 is opened on the lower side of the upper mold core 1, and the upper auxiliary pushing plate 26 is slidingly sealed and arranged in the upper auxiliary groove 31. The upper auxiliary pushing plate 26 is connected to the upper auxiliary groove 31 through the fourth elastic supporting device 27, and the bottom of the upper auxiliary groove 31 is connected to the lower piston chamber 16 of the upper channel 29 through the upper compression channel 30.

[0035] The working process of the demoulding device of the present invention is as follows: when the upper mold core 1 and the lower mold core 2 are matched, the lower main push plate 6 and the upper main push plate 23 are in contact, and move backward under the action of mutual push, realizing the first stage of movement of the push plate. After the upper mold core 1 and the lower mold core 2 are matched, the lower auxiliary push plate 10 and the upper auxiliary push plate 26 are in contact, wherein the lower auxiliary push plate 10 compresses the air or hydraulic oil in the lower compression channel 14, causing it to enter the upper piston chamber 15 of the lower channel 13, and the air pressure or hydraulic pressure acts on the conical sleeve 18, causing the center hole of the conical sleeve 18 to act on the annular groove 20, pushing the lower piston 12 to drive the lower guide rod 7 to move downward together. The upper auxiliary push plate 26 compresses the air or hydraulic oil in the upper compression channel 30, causing it to enter the lower piston chamber 16 of the upper channel 29, pushing the upper guide rod 24 to move upward, thereby avoiding the lamp handle chamber 4. When demolding is required, the upper mold core 1 and the lower mold core 2 are separated, and the lower main push plate 6 and the upper main push plate 23 can push the lamp handle outward under the action of the first elastic support device 9 and the fourth elastic support device 27 respectively, thereby achieving rapid demolding.

[0036] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A quick demoulding device for a motorcycle lamp, comprising an upper mold core and a lower mold core, wherein an injection molding cavity is formed between the upper mold core and the lower mold core, and characterized in that: The injection molding cavity includes a lamp body cavity formed in the center of the mold and a lamp handle cavity arranged around the outside of the lamp body cavity; a lower main groove is opened at the bottom of the lamp handle cavity, and a lower main push plate is slidingly and sealingly arranged in the lower main groove, and the lower main push plate is connected to a lower guide rod, and the lower guide rod is slidingly arranged in a lower guide groove opened in the lower mold core, and the lower guide rod is connected to the bottom of the lower guide groove through a first elastic support device, and a lower pushing device is also installed in the lower mold core; after the upper mold core and the lower mold core cooperate, the lower pushing device can push the lower guide rod and the lower main push plate to move downward.

2. The rapid demoulding device for a motorcycle lamp according to claim 1, characterized in that: The lower pushing device includes a lower auxiliary push plate, a second elastic support device, a lower piston and a linkage assembly. A lower channel and a lower compression channel are provided in the lower mold core. The lower piston sliding seal is installed in the lower channel. A through hole is provided on the lower piston for the lower guide rod to slide through. The lower piston divides the lower channel into an upper piston chamber and a lower piston chamber. A lower auxiliary groove is provided on the upper side of the lower mold core. The lower auxiliary push plate sliding seal is arranged in the lower auxiliary groove. The lower auxiliary push plate is connected to the lower auxiliary groove through the second elastic support device. The bottom of the lower auxiliary groove is connected to the upper piston chamber of the lower channel through the lower compression channel. A linkage assembly is installed between the lower guide rod and the lower piston.

3. The rapid demoulding device for a motorcycle lamp according to claim 2, characterized in that: The linkage assembly includes a tapered sleeve and a limit ring, the limit ring is located on the upper side of the lower piston and fixed in the lower channel, the tapered sleeve is made of flexible and telescopic material, the lower end of the tapered sleeve is fixedly connected to the lower piston, the upper end of the tapered sleeve forms a center hole that cooperates with the lower guide rod, and the outer wall of the lower guide rod is also provided with an annular groove that cooperates with the tapered sleeve.

4. The rapid demoulding device for a motorcycle lamp according to claim 3, characterized in that: An annular sealing ring is installed on the inner side of the central hole.

5. A quick demoulding device for a motorcycle lamp according to any one of claims 1 to 4, characterized in that: An upper main groove is provided on the top of the lamp handle cavity, and an upper main push plate is provided in the upper main groove for sliding sealing. The upper main push plate is connected to an upper guide rod, and the upper guide rod is slidably provided in an upper guide groove provided in the upper mold core. The upper guide rod is connected to the bottom of the upper guide groove through a third elastic supporting device, and an upper pushing device is also installed in the upper mold core; after the upper mold core and the lower mold core cooperate, the upper pushing device can push the upper guide rod and the upper main push plate to move upward.

6. The rapid demoulding device for a motorcycle lamp according to claim 5, characterized in that: The upper pushing device includes an upper auxiliary push plate, a fourth elastic support device, and an upper piston. An upper channel and an upper compression channel are provided in the upper mold core. The upper piston sliding seal is installed in the upper channel. The upper piston is connected to the upper guide rod. The upper piston divides the upper channel into an upper piston chamber and a lower piston chamber. An upper auxiliary groove is provided on the lower side of the upper mold core. The upper auxiliary push plate sliding seal is arranged in the upper auxiliary groove. The upper auxiliary push plate is connected to the upper auxiliary groove through the fourth elastic support device. The bottom of the upper auxiliary groove is connected to the lower piston chamber of the upper channel through the upper compression channel.

7. The rapid demoulding device for a motorcycle lamp according to claim 1, characterized in that: The upper die core and the lower die core are respectively installed in the upper pressing plate and the lower pressing plate, and cooling channels are installed in the upper pressing plate and the lower pressing plate at the same time.

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