Inward shrinkage type demolding mechanism of motorcycle lamp shell injection mold

Abstract

The utility model provides a motorcycle lamp housing injection mold internal shrinkage type demolding mechanism, which comprises a lower mounting plate and an upper mounting plate, the top end of the lower mounting plate is fixedly provided with an injection lower mold, the bottom end of the upper mounting plate is fixedly provided with an injection upper mold matched with the injection lower mold, the bottom of the injection upper mold is fixedly provided with an upper mold core, and the upper mold core is fixedly provided with a lower mold core. And a telescopic lower mold core is arranged at the top of the injection molding lower mold. According to the utility model, the traditional fixed lower mold core is designed to be telescopic, so that when the motorcycle lamp shell is demolded, the lower mold core is directly separated from the formed motorcycle lamp shell through shrinkage, and the traditional mode of demolding by arranging an ejector pin is replaced, on one hand, the demolding efficiency is improved, and on the other hand, the demolding time is shortened; and on the other hand, local deformation of the formed motorcycle lamp shell due to pushing of the ejector pin is reduced, and the product precision and quality of the motorcycle lamp shell are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycle accessories and relates to an inward-shrinking demoulding mechanism of an injection mold for a motorcycle lamp housing. Background Art

[0002] The motorcycle lamp housing is one of the important parts of motorcycle lamps. The motorcycle lamp housing effectively protects the internal LED lamp. The current motorcycle lamp housing is generally a plastic part and is processed by an injection mold.

[0003] After searching, according to the publication number "CN218366194U", a turn signal lamp housing injection mold is disclosed, including an upper mold assembly and a lower mold assembly, the upper mold assembly includes an upper mold base, the lower mold assembly includes a lower mold base, the upper mold base and the lower mold base are matched with each other in a concave and convex manner, the upper mold base has a first curved surface and a concave cavity, and a first water channel and a second water channel are arranged inside the upper mold base, the first water channel has a first section and a second section that are connected, and the second water channel has a first flow channel, a second flow channel, and a third flow channel that are connected, the first section and the second flow channel are obliquely arranged inside the upper mold base and are located directly above the first curved surface and the concave cavity, so as to cool the first curved surface and the concave cavity of the upper mold base.

[0004] The above-mentioned lamp housing injection mold is mainly cooled by cooling water channels, which improves the processing efficiency. However, the above-mentioned lamp housing injection mold and traditional injection molds mainly use ejector pins to demold when injecting the lamp housing. When this method is used for demolding, due to the influence of the shape of the motorcycle lamp housing, it is easy to cause the molded motorcycle lamp housing to deform, affecting the quality of the motorcycle lamp housing. For this reason, we designed a motorcycle lamp housing injection mold inward-retracting demolding mechanism to solve the above technical problems. Summary of the Invention

[0005] The purpose of the utility model is to provide an inward-retracting demoulding mechanism for an injection mold of a motorcycle lamp housing, so as to solve the problems raised in the above-mentioned background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a retractable demolding mechanism of the injection mold of a motorcycle lamp housing includes a lower mounting plate and an upper mounting plate, the top of the lower mounting plate is fixedly provided with an injection lower mold, the bottom end of the upper mounting plate is fixedly provided with an injection upper mold that is compatible with the injection lower mold, the bottom of the injection upper mold is fixedly provided with an upper mold core, the top of the injection lower mold is provided with a retractable lower mold core, the interior of the lower mold core is provided with evenly distributed annular cooling channels, the bottom of the injection lower mold is provided with a cavity, and the bottom of the lower mold core extends to the inside of the cavity.

[0007] In the above-mentioned inward-retracting demolding mechanism of the injection mold for the motorcycle lamp housing, a T-shaped groove is provided at the bottom of the cavity, and two T-shaped sliders are slidably connected inside the T-shaped groove. The top ends of the two T-shaped sliders are rotatably connected to connecting rods, and a limiting plate is fixedly installed at the bottom end of the lower mold core. A connecting seat is fixedly installed at the center of the bottom end of the limiting plate, and the top ends of the two connecting rods are rotatably connected to the two sides of the bottom end of the connecting seat.

[0008] In the above-mentioned inward-retracting demoulding mechanism of the motorcycle lamp housing injection mold, electric push rods are fixedly installed on both sides of the inner wall of the T-shaped slide groove, and the telescopic ends of the two electric push rods are fixedly connected to the side surfaces of the corresponding T-shaped sliders.

[0009] In the above-mentioned inward-shrinking demoulding mechanism of the motorcycle lamp housing injection mold, contact switches are fixedly installed on one side of the bottom of the two T-shaped slide grooves, and the electric push rod is electrically connected to the external power supply through the corresponding contact switch.

[0010] In the above-mentioned inward-shrinking demolding mechanism of the motorcycle lamp housing injection mold, a plurality of atomizing nozzles are fixedly installed at equal distances on both sides of the inner wall of the cavity, and the plurality of atomizing nozzles located on the same side are connected by a connecting conduit, which passes through the lower injection mold and is connected to the external pump body.

[0011] In the above-mentioned inward-retracting demolding mechanism of the motorcycle lamp housing injection mold, water pipe connectors are fixedly provided on both sides of the bottom end of the lower mold core, and the two water pipe connectors are fixedly connected to connecting hoses, one of which is fixedly connected to the external water inlet pipe, and the other is fixedly connected to the external water outlet pipe.

[0012] Compared with the prior art, the advantages of the inward-retracting demoulding mechanism of the motorcycle lamp housing injection mold of the utility model are:

[0013] 1. By setting the traditional fixed lower mold core to a retractable design, when the motorcycle lamp shell is demolded, the lower mold core is directly separated from the molded motorcycle lamp shell by shrinking, replacing the traditional demolding method using ejector pins. On the one hand, this improves the demolding efficiency, and on the other hand, it reduces the local deformation of the molded motorcycle lamp shell caused by the push of the ejector pins, effectively improving the product precision and quality of the motorcycle lamp shell.

[0014] 2. During the expansion and contraction process of the lower mold core, atomizing nozzles are installed on both sides of the inner wall of the cavity. The atomizing nozzles are connected to an external pump body. After the lower mold core shrinks and demolding is completed, the mold release agent can be sprayed on the surface of the lower mold core through the atomizing nozzles, replacing the traditional manual spraying of the mold release agent. When the next injection molding is carried out, the problem of the motorcycle lamp housing sticking to the mold is avoided, and the injection molding efficiency of the motorcycle lamp housing is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The utility model is a structural schematic diagram of the inward-shrinking demoulding mechanism of the injection mold for a motorcycle lamp housing.

[0016] Figure 2 The utility model is a schematic cross-sectional structure diagram of the inward-shrinking demoulding mechanism of the injection mold for a motorcycle lamp housing.

[0017] Figure 3 The utility model is a schematic diagram of the cross-sectional structure of the lower mold core of the inward-shrinking demoulding mechanism of the injection mold for the motorcycle lamp housing.

[0018] Figure 4 This is the utility model of the inward-shrinking demoulding mechanism of the injection mold of the motorcycle lamp housing Figure 2 A partial enlarged view of point A in the middle.

[0019] In the figure, 1. lower mounting plate; 2. lower injection mold; 3. upper injection mold; 4. upper mounting plate; 5. upper mold core; 6. lower mold core; 7. annular cooling channel; 8. water pipe connector; 9. connecting seat; 10. limit plate; 11. atomizing nozzle; 12. connecting conduit; 13. T-shaped slide; 14. electric push rod; 15. contact switch; 16. T-shaped slider; 17. connecting rod; 18. connecting hose; 19. cavity. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1-4 As shown, the utility model has a retractable demolding mechanism for the injection mold of a motorcycle lamp housing, comprising a lower mounting plate 1 and an upper mounting plate 4. An injection lower mold 2 is fixedly provided on the top of the lower mounting plate 1, and an injection upper mold 3 adapted to the injection lower mold 2 is fixedly provided on the bottom of the upper mounting plate 4. An upper mold core 5 is fixedly installed on the bottom of the injection upper mold 3, and a retractable lower mold core 6 is provided on the top of the injection lower mold 2. The interior of the lower mold core 6 is provided with evenly distributed annular cooling channels 7. A cavity 19 is opened at the bottom of the injection lower mold 2, and the bottom of the lower mold core 6 extends to the interior of the cavity 19.

[0022] Specifically, by setting the traditional fixed lower mold core 6 to a retractable design, when the motorcycle lamp shell is demolded, the lower mold core 6 is directly separated from the molded motorcycle lamp shell by shrinking, replacing the traditional demolding method by setting an ejector pin. On the one hand, the demolding efficiency is improved, and on the other hand, the local deformation of the molded motorcycle lamp shell caused by the push of the ejector pin is reduced, thereby effectively improving the product precision and quality of the motorcycle lamp shell.

[0023] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the utility model has an inward-retracting demoulding mechanism for the injection mold of the motorcycle lamp housing. A T-shaped slot 13 is provided at the bottom of the cavity 19. Two T-shaped sliders 16 are slidably connected inside the T-shaped slot 13. The top ends of the two T-shaped sliders 16 are rotatably connected to connecting rods 17. The bottom end of the lower mold core 6 is fixedly installed with a limit plate 10. A connecting seat 9 is fixedly installed at the center of the bottom end of the limit plate 10. The top ends of the two connecting rods 17 are rotatably connected to the two sides of the bottom end of the connecting seat 9.

[0024] Electric push rods 14 are fixedly mounted on both sides of the inner wall of the T-shaped slide 13 , and the telescopic ends of the two electric push rods 14 are fixedly connected to the side surfaces of the corresponding T-shaped slide blocks 16 .

[0025] Specifically, the electric push rod 14 drives the movement of the two T-shaped sliders 16, which squeezes the rotation of the connecting rod 17, and the rotation of the connecting rod 17 drives the extension and contraction of the lower mold core 6. During demolding, the entire lower mold core 6 is separated from the molded motorcycle lamp housing, replacing the traditional demolding by ejector pin, thereby improving the demolding efficiency.

[0026] A contact switch 15 is fixedly mounted on one side of the bottom of each of the two T-shaped chutes 13 , and the electric push rod 14 is electrically connected to an external power supply via the corresponding contact switch 15 .

[0027] Specifically, the electric push rod 14 is controlled to be closed by the contact switch 15 , thereby controlling the sliding distance of the T-shaped slider 16 .

[0028] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the utility model has an inward-retracting demoulding mechanism for the injection mold of the motorcycle lamp housing. A plurality of atomizing nozzles 11 are fixedly installed at equal distances on both sides of the inner wall of the cavity 19. The plurality of atomizing nozzles 11 on the same side are connected by a connecting conduit 12. The connecting conduit 12 passes through the lower injection mold 2 and is connected to the external pump body.

[0029] Specifically, by installing the atomizing nozzle 11, the atomizing nozzle 11 is connected to the external pump body through the connecting conduit 12, so that the external release agent can be sprayed on the surface of the lower mold core 6 through the atomizing nozzle 11, reducing the problem of the motorcycle lamp housing sticking to the mold.

[0030] Water pipe connectors 8 are fixedly provided on both sides of the bottom end of the lower mold core 6. The two water pipe connectors 8 are fixedly connected to connecting hoses 18, one of which is fixedly connected to the external water inlet pipe, and the other is fixedly connected to the external water outlet pipe.

[0031] Specifically, water can flow into the annular cooling channel 7 provided inside the lower mold core 6 through the externally connected water inlet pipe and water outlet pipe, thereby accelerating the cooling and molding of the motorcycle lamp housing.

[0032] In a specific implementation, when the motorcycle lamp housing injection mold with the retractable demoulding mechanism is used to process the motorcycle lamp housing, the injection mold is first assembled to the designated position of the injection molding machine and the power is turned on. Before injection molding, the electric push rod 14 is turned on, and the electric push rod 14 pushes the two T-shaped sliders 16 to slide toward the middle of the T-shaped slide 13. The T-shaped sliders 16 move toward the middle to squeeze the connecting rod 17 and rotate. The connecting rod 17 rotates and pushes the lower mold core 6 upward. At this time, when the lower injection mold 2 and the upper injection mold 3 are closed, a motorcycle lamp housing mold cavity is formed between the upper mold core 5 and the lower mold core 6. Then, injection molding is performed. During the injection molding process, water in the external water inlet pipe enters the annular cooling channel 7 inside the lower mold core 6, thereby accelerating the molding of the motorcycle lamp housing.

[0033] When the lower injection mold 2 is separated from the upper injection mold 3, the electric push rod 14 is closed, and the electric push rod 14 contracts to drive the two T-shaped sliders 16 to move to both sides. At this time, the connecting rod 17 rotates under tension, and the lower mold core 6 contracts, so that the lower mold core 6 is separated from the molded motorcycle lamp shell. When the lower mold core 6 contracts to the inside of the cavity 19, the external pump body is turned on, and the pump body sprays the release agent on the surface of the lower mold core 6 through the atomizing nozzle 11. When the next injection molding is carried out, the problem of the motorcycle lamp shell sticking to the mold is avoided.

[0034] Matters not described in detail in this specification constitute prior art known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art to which the present invention relates may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A retractable demoulding mechanism for an injection mold of a motorcycle lamp housing, comprising a lower mounting plate (1) and an upper mounting plate (4), wherein a lower injection mold (2) is fixedly provided at the top end of the lower mounting plate (1), and an upper injection mold (3) adapted to the lower injection mold (2) is fixedly provided at the bottom end of the upper mounting plate (4), characterized in that: An upper mold core (5) is fixedly installed at the bottom of the injection upper mold (3), a retractable lower mold core (6) is provided at the top of the injection lower mold (2), and a uniformly distributed annular cooling channel (7) is provided inside the lower mold core (6). A cavity (19) is opened at the bottom of the injection lower mold (2), and the bottom of the lower mold core (6) extends into the interior of the cavity (19).

2. The inward-shrinking demoulding mechanism of the injection mold for a motorcycle lamp housing according to claim 1, characterized in that: A T-shaped slot (13) is provided at the bottom of the cavity (19), and two T-shaped sliders (16) are slidably connected inside the T-shaped slot (13). The top ends of the two T-shaped sliders (16) are rotatably connected to connecting rods (17). A limiting plate (10) is fixedly installed at the bottom end of the lower mold core (6), and a connecting seat (9) is fixedly installed at the center of the bottom end of the limiting plate (10). The top ends of the two connecting rods (17) are rotatably connected to the two sides of the bottom end of the connecting seat (9).

3. The inward-retracting demoulding mechanism of the motorcycle lamp housing injection mold according to claim 2, characterized in that: Electric push rods (14) are fixedly installed on both sides of the inner wall of the T-shaped slide groove (13), and the telescopic ends of the two electric push rods (14) are fixedly connected to the side surfaces of the corresponding T-shaped slide blocks (16).

4. The inward-shrinking demoulding mechanism of the motorcycle lamp housing injection mold according to claim 3, characterized in that: A contact switch (15) is fixedly installed on one side of the bottom of the two T-shaped slide grooves (13), and the electric push rod (14) is electrically connected to the external power supply through the corresponding contact switch (15).

5. The inward-shrinking demoulding mechanism of the injection mold for a motorcycle lamp housing according to claim 2, characterized in that: A plurality of atomizing nozzles (11) are fixedly installed at equal intervals on both sides of the inner wall of the cavity (19); the plurality of atomizing nozzles (11) located on the same side are connected via a connecting conduit (12); and the connecting conduit (12) passes through the lower injection mold (2) and is connected to an external pump body.

6. The inward-shrinking demoulding mechanism of the injection mold for a motorcycle lamp housing according to claim 1, characterized in that: Water pipe connectors (8) are fixedly provided on both sides of the bottom end of the lower mold core (6), and the two water pipe connectors (8) are fixedly connected to connecting hoses (18), one of the connecting hoses (18) is fixedly connected to an external water inlet pipe, and the other connecting hose (18) is fixedly connected to an external water outlet pipe.

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