Injection molding die for motorcycle headlight cover

Abstract

The utility model provides an injection molding die for a motorcycle headlight cover, comprising a top plate, an upper die, a lower die, an ejector plate and a bottom plate which are arranged in sequence, wherein a molding protrusion 1 and a molding groove 1 are respectively arranged in the upper die, and a molding protrusion 2 and a molding groove 2 are respectively arranged in the lower die, wherein the molding protrusion 1 cooperates with the molding groove 2, and the molding protrusion 2 cooperates with the molding groove 1 to form a cavity for molding a lamp cover body, wherein the cavity is arranged in an inclined manner, a glue injection component is arranged on the top plate, and a glue injection flow channel is also provided in the upper die, wherein one end of the glue injection component is used for connecting to an injection molding machine, and the other end is connected to the glue injection flow channel, and the glue injection flow channel is connected to the edge of the top side of the cavity, and by tilting the cavity and arranging the glue injection flow channel above the cavity, the colloid enters the cavity and quickly flows into the other side of the cavity by gravity, thereby reducing the problem of insufficient flow of the colloid.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to an injection moulding mould for a motorcycle headlight cover. Background Art

[0002] like Figure 1 As shown, a motorcycle headlight cover includes a cover body 90 . The cover body 90 is made of transparent PC material, and a plurality of ribs 91 are arranged on the surface thereof. A circle of mounting buckles 92 is also arranged outside the cover body 90 .

[0003] The above-mentioned lampshade body 90 is installed on the outside of the headlight of a motorcycle, and there are certain requirements on the light transmittance of the lampshade body 90. The light transmittance of the lampshade is related to the surface smoothness of the front and back sides of the lampshade. In order not to affect the surface quality of the lampshade and prevent flow marks from appearing on the surface of the lampshade, when injection molding the above-mentioned lampshade body 90, the glue feeding point cannot be set in the middle of the lampshade body 90, which causes the problem of slow raw material flow and insufficient colloid flow during injection molding of the lampshade body 90. Utility Model Content

[0004] In view of this, the utility model aims to provide an injection molding die for a motorcycle headlight cover, which has the advantage of faster colloid flow.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a motorcycle headlight cover injection molding mold, comprising a top plate, an upper mold, a lower mold, an ejector plate and a bottom plate arranged in sequence, the upper mold is respectively provided with a molding protrusion one and a molding groove one, the lower mold is respectively provided with a molding protrusion two and a molding groove two, the molding protrusion one and the molding groove one cooperate to form a cavity for molding the lampshade body, the cavity is inclined, a glue injection component is provided on the top plate, and a glue injection channel is also opened in the upper mold, one end of the glue injection component is used to connect to an injection molding machine, and the other end is connected to the glue injection channel, and the glue injection channel is connected to the edge of the top side of the cavity.

[0006] Through the above technical means, by tilting the cavity and setting the glue injection channel above the cavity, the colloid enters the cavity and flows quickly into the other side of the cavity by gravity, thereby reducing the problem of insufficient colloid flow.

[0007] Preferably, the injection flow channel includes flow channel 1, flow channel 2 and flow channel 3, and the flow channel 2 and flow channel 3 are respectively arranged on both sides of the flow channel 1, and the flow channel 1, flow channel 2 and flow channel 3 are all connected to the cavity.

[0008] Through the above technical means, by opening flow channel one, flow channel two and flow channel three, the colloid enters the cavity from three flow channels, thereby increasing the colloid injection speed, and at the same time making the injection of the colloid more dispersed and more uniform.

[0009] Preferably, a first molding groove and a second molding groove are further provided in the upper mold, and both the first molding groove and the second molding groove are used for molding ribs. Insulating flow channels are also provided in the upper mold and the lower mold.

[0010] Through the above technical means, the ribs are formed by the second molding groove and the second molding groove, while providing guidance for the flow of the colloid, and the mold temperature is increased by opening the insulation flow channel to prevent the colloid from solidifying prematurely and causing inadequate injection.

[0011] Preferably, a slide groove is also opened in the upper mold, a pre-pull block is embedded in the slide groove, the first molding groove is arranged on the pre-pull block, a driving source is arranged at the tail of the pre-pull block, the driving source is fixedly arranged on the top plate, and drives the pre-pull block to slide in the slide groove.

[0012] Through the above-mentioned technical means, by opening the first molding groove on the pre-drawing block and pulling out the pre-drawing block in advance through the driving source, the two ribs are demolded in advance to prevent the contact area between the ribs and the first molding groove and the second molding groove from being too large, thereby preventing the surface of the lampshade body from being damaged.

[0013] Preferably, the driving source includes a hydraulic cylinder, the injection assembly includes a hot runner block and a hot nozzle, the hydraulic cylinder and the hot runner block are staggered, the hot nozzle is arranged on the top plate, the hot runner block and the hydraulic cylinder are arranged between the top plate and the upper mold, and a support block is also arranged between the top plate and the upper mold.

[0014] Through the above technical means, the top plate and the upper mold are connected through the support block to increase the gap between the upper mold and the top plate. By setting the hot runner block, the hot nozzle and the injection flow channel are connected while the colloid is kept warm. The pre-drawing block is pulled by the cylinder to make the first molding groove separate from the product in advance, thereby reducing the contact area during demolding.

[0015] Preferably, the lower mold is further provided with a plurality of ejection holes 1, and the ejection holes 1 are arranged at a position of the cavity relative to the mounting buckle. The lower mold is further provided with ejection holes 2, and the ejection holes 2 are arranged at the injection flow channel. The ejection plate is provided with a plurality of ejector rods, and the ejector rods are slidably arranged in the ejection holes 1 and 2.

[0016] Through the above technical means, by setting the second ejection hole at the glue injection flow channel, the glue at the glue injection flow channel is ejected together during ejection, thereby preventing the glue outlet at the glue injection flow channel from sticking to the mold, causing breakage between the lampshade body and the glue outlet, affecting the quality of the lampshade body.

[0017] Preferably, a positioning wedge is further provided on the upper die, and a positioning groove is provided on the lower die. The positioning wedge cooperates with the positioning groove for positioning, and the positioning groove is provided on the outer side of the mounting buckle.

[0018] Through the above technical means, the mold closing accuracy is increased by cooperating with the positioning groove and the positioning wedge. By opening the positioning groove outside the mounting buckle, the positioning groove has the function of a waste bag, reducing the problem of the colloid at the mounting buckle not being squeezed into place. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the lampshade body;

[0020] Figure 2 It is a structural schematic diagram of an embodiment;

[0021] Figure 3 It is a structural schematic diagram of the upper die;

[0022] Figure 4 It is a structural schematic diagram of the lower mold;

[0023] Figure 5 for Figure 4 Schematic diagram of part A;

[0024] Figure 6 A front view schematic diagram of an embodiment;

[0025] Figure 7 It is a cross-sectional schematic diagram of the upper mold.

[0026] 1. The top plate; 2. the upper mold; 3. the lower mold; 4. the ejector plate; 5. the bottom plate; 6. the molding protrusion one; 7. the molding groove one; 8. the molding protrusion two; 9. the molding groove two; 10. the cavity; 11. the injection assembly; 12. the injection flow channel; 13. the flow channel one; 14. the flow channel two; 15. the flow channel three; 16. the first molding groove; 17. the second molding groove; 18. the heat preservation flow channel; 19. the slide; 20. the pre-pumping block; 21. the driving source; 22. the oil cylinder; 23. the support block; 24. the hot runner block; 25. the hot nozzle; 26. the ejection hole one; 27. the ejection hole two; 28. the ejector rod; 29. ​​the positioning wedge block; 30. the positioning groove; 90. the lampshade body; 91. the rib plate; 92. the mounting buckle. DETAILED DESCRIPTION

[0027] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0028] A motorcycle headlight cover injection molding die, comprising a top plate 1, an upper die 2, a lower die 3, an ejector plate 4 and a bottom plate 5 arranged in sequence, a molding protrusion 6 and a molding groove 7 are respectively arranged in the upper die 2, a molding protrusion 8 and a molding groove 9 are respectively arranged in the lower die 3, the molding protrusion 6 cooperates with the molding groove 9, and the molding protrusion 8 cooperates with the molding groove 7, so as to form a cavity 10 for molding a lampshade body 90, and the cavity 10 is arranged in an inclined manner, and a glue injection molding die is arranged on the top plate 1. Component 11, a glue injection channel 12 is also opened in the upper mold 2, one end of the glue injection component 11 is used to connect to the injection molding machine, and the other end is connected to the glue injection channel 12, the glue injection channel 12 is connected to the edge of the top side of the cavity 10, when the mold is installed on the injection molding machine, the glue injection channel 12 is at the upper end of the cavity 10, the glue sprayed from the glue injection channel 12 flows into the cavity 10 from top to bottom, the cross-section of the cavity 10 is in the shape of a slide, and the glue flows rapidly along the cavity 10 by gravity, thereby reducing the situation where the glue does not flow in place.

[0029] The glue injection channel 12 includes a channel 1 13, a channel 2 14 and a channel 3 15. The channel 2 14 and the channel 3 15 are respectively arranged on both sides of the channel 1 13. The channel 1 13, the channel 2 14 and the channel 3 15 are all connected to the cavity 10 and are arranged above the cavity 10. By providing the channel 1 13, the channel 2 14 and the channel 3 15, the injection of the colloid is more dispersed and the injection of the colloid is more uniform.

[0030] The upper mold 2 is also provided with a first molding groove 16 and a second molding groove 17. The first molding groove 16 is used to mold shorter ribs 91, and the second molding groove 17 is used to mold longer ribs 91. The upper mold 2 and the lower mold 3 are also provided with a heat preservation flow channel 18. The first molding groove 16 and the second molding groove 17 also provide a certain guiding effect for the flow of the colloid. By opening the heat preservation flow channel 18, the mold temperature is increased to prevent the colloid from solidifying prematurely and causing the glue to be not injected in place.

[0031] A slide groove 19 is also provided in the upper mold 2, and the slide groove 19 runs through the outer side from the top to the cavity 10. A pre-pull block 20 is embedded in the slide groove 19. The first molding groove 16 is arranged on the pre-pull block 20. The pre-pull block 20 is a part of the molded lampshade body 90. A driving source 21 is arranged at the tail of the pre-pull block 20. The driving source 21 includes an oil cylinder 22, which is fixedly arranged on the top plate 1 and drives the pre-pull block 20 to slide in the slide groove 19. Before opening the mold, the oil cylinder 22 drives the pre-pull block 20 to be pulled out first, thereby reducing the adhesion area between the upper mold 2 and the rib plate 91 to prevent the surface of the lampshade body 90 from being damaged. There is a gap for ventilation between the pre-pull block 20 and the slide groove 19. When the pre-pull block 20 is pulled out, the gas enters the cavity 10, which further facilitates demolding.

[0032] A support block 23 is also provided between the top plate 1 and the upper mold 2. The two ends of the support block 23 respectively fix the top plate 1 and the upper mold 2, and a certain gap is left between the upper mold 2 and the top plate 1. The injection assembly 11 includes a hot runner block 24 and a hot nozzle 25. The hydraulic cylinder 22 and the hot runner block 24 are staggered. The hot nozzle 25 is arranged on the top plate 1, and its bottom is connected to one end of the hot runner block 24, and the other end of the hot runner block 24 is connected to the injection channel 12. The hot runner block 24 and the hydraulic cylinder 22 are both arranged in the gap between the top plate 1 and the upper mold 2. The hot runner block 24 and the hot nozzle 25 are existing technologies and are used for thermal insulation fluids, which will not be elaborated on here.

[0033] The lower mold 3 is also provided with a plurality of ejection holes 26, which are arranged at a position of the cavity 10 relative to the mounting buckle 92. The lower mold 3 is also provided with ejection holes 27, which are arranged at the glue injection channel 12. The ejection plate 4 is provided with a plurality of ejector rods 28, which are slidably arranged in the ejection holes 26 and the ejection holes 27. During ejection, the lampshade body 90 and the glue outlet at the glue injection channel 12 are ejected together, thereby preventing the glue outlet at the glue injection channel 12 from sticking to the mold, resulting in a break between the lampshade body 90 and the glue outlet, which affects the quality of the lampshade body 90.

[0034] A positioning wedge 29 is also provided on the upper mold 2, and a positioning groove 30 is provided on the lower mold 3. The side end surfaces of the positioning wedge 29 and the positioning groove 30 are both inclined. When the mold is closed, the positioning wedge 29 and the positioning groove 30 gradually fit together and complete the positioning. The positioning groove 30 is provided on the outside of the mounting buckle 92. When the positioning wedge 29 and the positioning groove 30 are closed, there is still a partial cavity at the bottom of the positioning groove 30, so that the positioning groove 30 has the function of a waste bag, reducing the problem of the colloid at the mounting buckle 92 not being squeezed into place.

[0035] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A motorcycle headlight cover injection molding die, comprising a top plate (1), an upper die (2), a lower die (3), an ejector plate (4) and a bottom plate (5) arranged in sequence, characterized in that: The upper mold (2) is provided with a molding protrusion (6) and a molding groove (7), respectively; the lower mold (3) is provided with a molding protrusion (8) and a molding groove (9), respectively; the molding protrusion (6) cooperates with the molding groove (9), and the molding protrusion (8) cooperates with the molding groove (7) to form a cavity (10) for molding the lampshade body (90); the cavity (10) is arranged in an inclined manner; a glue injection component (11) is arranged on the top plate (1); a glue injection channel (12) is also provided in the upper mold (2); one end of the glue injection component (11) is used to connect to an injection molding machine, and the other end is connected to the glue injection channel (12); the glue injection channel (12) is connected to the edge of the top side of the cavity (10).

2. The injection molding mold for a motorcycle headlight cover according to claim 1, characterized in that: The injection flow channel (12) comprises flow channel one (13), flow channel two (14) and flow channel three (15); the flow channel two (14) and flow channel three (15) are respectively arranged on both sides of the flow channel one (13); and the flow channel one (13), flow channel two (14) and flow channel three (15) are all in communication with the cavity (10).

3. The injection molding mold for a motorcycle headlight cover according to claim 1, characterized in that: The upper mold (2) is also provided with a first molding groove (16) and a second molding groove (17), both of which are used to mold the rib plate (91), and the upper mold (2) and the lower mold (3) are also provided with a heat preservation flow channel (18).

4. The injection molding die for a motorcycle headlight cover according to claim 3, characterized in that: The upper mold (2) is also provided with a slide groove (19), a pre-drawing block (20) is embedded in the slide groove (19), the first molding groove (16) is arranged on the pre-drawing block (20), a driving source (21) is arranged at the tail of the pre-drawing block (20), the driving source (21) is fixedly arranged on the top plate (1), and drives the pre-drawing block (20) to slide in the slide groove (19).

5. The injection molding die for a motorcycle headlight cover according to claim 4, characterized in that: The driving source (21) comprises a hydraulic cylinder (22), the glue injection assembly (11) comprises a hot runner block (24) and a hot nozzle (25), the hydraulic cylinder (22) and the hot runner block (24) are arranged alternately, the hot nozzle (25) is arranged on the top plate (1), the hot runner block (24) and the hydraulic cylinder (22) are arranged between the top plate (1) and the upper mold (2), and a support block (23) is also arranged between the top plate (1) and the upper mold (2).

6. The injection molding die for a motorcycle headlight cover according to claim 1, characterized in that: The lower mold (3) is also provided with a plurality of ejection holes (26), the ejection holes (26) being arranged at a position of the cavity (10) relative to the mounting buckle (92); the lower mold (3) is also provided with a second ejection hole (27), the ejection hole (27) being arranged at the injection flow channel (12); the ejection plate (4) is provided with a plurality of ejector rods (28), the ejector rods (28) being slidably arranged in the ejection hole (26) and the ejection hole (27).

7. The injection molding die for a motorcycle headlight cover according to claim 1, characterized in that: The upper die (2) is also provided with a positioning wedge (29), and the lower die (3) is provided with a positioning groove (30). The positioning wedge (29) cooperates with the positioning groove (30) for positioning, and the positioning groove (30) is provided on the outside of the mounting buckle (92).

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