Ejection mechanism for injection molding and demolding of automobile wheel cover

Abstract

The utility model relates to an ejection mechanism for injection molding and demolding of an automobile wheel cover, which belongs to the technical field of injection molding of the automobile wheel cover and comprises a placing frame, a lower mold is fixedly connected in the placing frame, an upper mold is placed on the top surface of the lower mold, an ejection assembly for ejecting the automobile wheel cover is arranged on the lower mold, and the ejection assembly comprises a fixing plate. The fixing plate is placed at the bottom of the lower mold, two containing grooves are formed in the inner bottom wall of the lower mold, push plates are placed in the two containing grooves, and two connecting holes are formed in the bottom face of the lower mold. According to the ejection mechanism for injection molding and demolding of the automobile wheel cover, under the action of the push plate and the linkage rod, the automobile wheel cover is driven to move, the automobile wheel cover is ejected out, a worker can conveniently take out the automobile wheel cover, and the automobile wheel cover can be conveniently taken out through sliding connection between a sliding plate and a sliding groove and sliding connection between a connecting plate and a connecting groove; and the upper mold and the fixing plate are conveniently driven to move.

Description

Technical Field

[0001] This utility model relates to the field of automotive wheel arch injection molding technology, specifically an ejection mechanism for demolding automotive wheel arch injection molding. Background Technology

[0002] Injection molds are tools used to produce plastic products, and they also give plastic products a complete structure and precise dimensions. Car wheel covers, also known as inner wheel covers or mudguards, are protective devices installed around the wheels. They are mostly made of engineering plastics, rubber, or composite materials. Some high-end models may be covered with flocking to reduce noise. Car wheel covers are mostly injection molded in one piece using injection molds.

[0003] The patent CN210733108U discloses a high-speed injection mold for automobile wheel covers. This patent discloses a technical solution to improve cooling efficiency, which solves the problem that the heat dissipation effect of existing injection molds is not ideal. The finished automobile wheel covers often take a long time to cool down, which leads to a series of tasks such as mold removal, increasing the workload of workers and slowing down the production process of automobile wheel covers.

[0004] When in use, the device accelerates the cooling of the car wheel cover through the cooperation of the water circulation component and the heat absorption component. However, after the car wheel cover is made, it is inconvenient for the staff to remove it from the mold, which reduces the effectiveness of use. Therefore, an ejection mechanism for injection molding demolding of car wheel covers is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an ejection mechanism for demolding automotive wheel covers from injection molding. This mechanism offers the advantage of convenient removal and solves the problem that existing high-speed injection molds for automotive wheel covers are not convenient for removing the finished wheel covers.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An ejection mechanism for injection molding and demolding of automotive wheel arches includes a placement frame, a lower mold fixedly connected inside the placement frame, an upper mold placed on the top surface of the lower mold, and an ejection assembly for ejecting the automotive wheel arches on the lower mold.

[0008] The ejection assembly includes a fixing plate placed at the bottom of the lower mold. The inner bottom wall of the lower mold has two placement slots, and push plates are placed inside each of the two placement slots. The bottom surface of the lower mold has two connecting holes. The bottom surfaces of the two push plates are fixedly connected to a linkage rod with one end passing through the connecting hole and extending to the fixing plate. The two linkage rods are fixedly connected to the fixing plate. The left and right inner walls of the placement frame have connecting slots, and the left and right inner walls of the placement frame have sliding slots. The top surface of the upper mold has injection holes.

[0009] Furthermore, the push plate and the placement groove are fitted together, the placement groove and the connecting hole are connected, and the linkage rod and the connecting hole are fitted with a clearance.

[0010] Furthermore, the placement frame is equipped with a drive assembly for moving the upper mold and the fixed plate. The drive assembly includes a mounting frame, which is fixedly connected to the left side of the placement frame. A drive motor is fixedly mounted on the top surface of the mounting frame. Two sliding plates, each with one end extending into two sliding grooves, are fixedly connected to the bottom surface of the fixed plate. The sliding plate on the left side extends into the interior of the mounting frame. Two connecting plates, each with one end extending into two connecting grooves, are fixedly connected to the top surface of the upper mold. The connecting plate on the left side extends into the interior of the mounting frame. The output shaft of the drive motor is fixedly connected to a screw, one end of which passes through the mounting frame and extends into the bottom wall of the mounting frame. The screw passes through the left connecting plate and the left sliding plate. A support groove is provided on the left inner wall of the mounting frame. A support block, one end of which extends into the support groove, is fixedly connected to the left side of both the left connecting plate and the left sliding plate.

[0011] Furthermore, the sliding plate and the sliding groove are slidably connected, the connecting plate and the connecting groove are slidably connected, the connecting groove on the left side and the left sliding groove are both through grooves, and the placement rack and the mounting rack are both U-shaped racks.

[0012] Furthermore, the support block and the support groove are slidably connected, and the screw is rotatably connected through a bearing and a mounting bracket. Threaded holes are provided on the top surfaces of the connecting plate and the left sliding plate located on the left side. The screw passes through the two threaded holes and is threadedly connected to them.

[0013] Furthermore, a limiting component for restricting the upper mold is provided between the lower mold and the upper mold. The limiting component includes two positioning plates, both of which are fixedly connected to the bottom surface of the upper mold. The top surface of the lower mold has two positioning slots, and the positioning plates extend into the interior of the positioning slots. Both the upper mold and the lower mold have water storage tanks inside. A water inlet pipe with one end penetrating through the upper mold and the lower mold and extending to the outside is fixedly connected to the interior of each of the two water storage tanks. A water outlet pipe with one end penetrating through the upper mold and the lower mold and extending to the outside is also fixedly connected to the interior of each of the two water storage tanks.

[0014] Furthermore, the two positioning plates are respectively attached to the two positioning slots, and the left and right sides of the upper mold are respectively attached to the left and right inner walls of the placement frame.

[0015] Furthermore, the outlet pipe is located to the right of the inlet pipe, and the water storage tank is a rectangular annular groove.

[0016] Compared with the prior art, this utility model provides an ejection mechanism for demolding automotive wheel arch injection molding, which has the following advantages:

[0017] 1. The ejection mechanism for demolding injection molded car wheel covers, under the action of the push plate and the linkage rod, drives the car wheel cover to move and ejects the car wheel cover, making it convenient for workers to remove the car wheel cover. It adopts the sliding connection between the sliding plate and the sliding groove, as well as the sliding connection between the connecting plate and the connecting groove, to conveniently drive the upper mold and the fixed plate to move.

[0018] 2. This ejection mechanism for injection molding and demolding of automotive wheel covers, driven by a screw, moves the sliding plate and connecting plate, facilitating operation by staff. The sliding connection between the support block and the support groove supports the sliding plate and connecting plate, improving stability. Furthermore, the cooperation between the positioning plate and the positioning groove facilitates the connection between the upper and lower molds, making it more convenient and practical. Attached Figure Description

[0019] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure of A in the middle.

[0022] In the diagram: 1. Placement rack, 2. Lower mold, 3. Upper mold, 4. Water inlet pipe, 5. Connecting groove, 6. Drive motor, 7. Mounting rack, 8. Connecting plate, 9. Sliding plate, 10. Sliding groove, 11. Water outlet pipe, 12. Injection hole, 13. Screw, 14. Support groove, 15. Support block, 16. Positioning plate, 17. Positioning groove, 18. Water storage tank, 19. Fixing plate, 20. Linkage rod, 21. Placement groove, 22. Push plate, 23. Connecting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 3 An ejection mechanism for demolding an injection molded car wheel cover in this embodiment includes a placement frame 1. A lower mold 2 is fixedly connected inside the placement frame 1. An upper mold 3 is placed on the top surface of the lower mold 2. An ejection assembly for ejecting the car wheel cover is provided on the lower mold 2.

[0025] The ejection assembly includes a fixing plate 19, which is placed at the bottom of the lower mold 2. The inner bottom wall of the lower mold 2 has two placement slots 21, and push plates 22 are placed inside the two placement slots 21. The bottom surface of the lower mold 2 has two connecting holes 23. The bottom surface of the two push plates 22 is fixedly connected to a linkage rod 20, one end of which passes through the connecting hole 23 and extends to the fixing plate 19. The two linkage rods 20 are fixedly connected to the fixing plate 19. The left and right inner walls of the placement frame 1 have connecting slots 5, and the left and right inner walls of the placement frame 1 have sliding slots 10. The top surface of the upper mold 3 has an injection hole 12.

[0026] Among them, the push plate 22 and the placement groove 21 are fitted together, the placement groove 21 and the connecting hole 23 are connected, and the linkage rod 20 and the connecting hole 23 are fitted with a clearance.

[0027] Specifically, the upper mold 3 and the lower mold 2 are fitted together. The raw material is conveyed by the injection hole 12 and enters between the upper mold 3 and the lower mold 2 to inject the car wheel cover. After cooling, the upper mold 3 and the fixing plate 19 move upward. The upper mold 3 separates from the lower mold 2. The fixing plate 19 drives the push plate 22 to move upward through the linkage rod 20, pushing the car wheel cover and ejecting it.

[0028] It should be noted that both the upper mold 3 and the lower mold 2 are conventional devices known to the public in the prior art, and their specific structures and working principles will not be described in detail in this article.

[0029] Please see Figures 1 to 3 In this embodiment, the placement frame 1 is equipped with a drive assembly for moving the upper mold 3 and the fixed plate 19. The drive assembly includes a mounting frame 7, which is fixedly connected to the left side of the placement frame 1. A drive motor 6 is fixedly mounted on the top surface of the mounting frame 7. Two sliding plates 9 are fixedly connected to the bottom surface of the fixed plate 19, with one end extending into the two sliding grooves 10 respectively. The sliding plate 9 on the left side extends into the interior of the mounting frame 7. Two connecting plates 8 are fixedly connected to the top surface of the upper mold 3, with one end extending into the two connecting grooves 5 respectively. The connecting plate 8 on the left side extends into the interior of the mounting frame 7. The output shaft of the drive motor 6 is fixedly connected to a screw 13, one end of which passes through the mounting frame 7 and extends into the bottom wall of the mounting frame 7. The screw 13 passes through the left connecting plate 8 and the left sliding plate 9. A support groove 14 is provided on the left inner wall of the mounting frame 7. A support block 15, one end of which extends into the support groove 14, is fixedly connected to the left side of both the left connecting plate 8 and the left sliding plate 9.

[0030] Among them, the sliding plate 9 and the sliding groove 10 are slidably connected, the connecting plate 8 and the connecting groove 5 are slidably connected, the connecting groove 5 on the left and the sliding groove 10 on the left are both through grooves, the placement frame 1 and the mounting frame 7 are both U-shaped frames, the support block 15 and the support groove 14 are slidably connected, the screw 13 is rotatably connected to the mounting frame 7 through the bearing, and the top surfaces of the left connecting plate 8 and the left sliding plate 9 are both provided with threaded holes, and the screw 13 passes through the two threaded holes and is threadedly connected to them.

[0031] Specifically, the drive motor 6 is started, and the output shaft of the drive motor 6 drives the screw 13 to rotate. The screw 13 is connected to the sliding plate 9 and the connecting plate 8 in sequence by threads, and to the support block 15 and the support groove 14 by sliding. This causes the screw 13 to drive the sliding plate 9 and the connecting plate 8 to move upward, which in turn drives the upper mold 3 and the fixed plate 19 to move upward respectively.

[0032] Please see Figures 1 to 3 In this embodiment, a limiting component is provided between the lower mold 2 and the upper mold 3 to restrict the upper mold 3. The limiting component includes two positioning plates 16, both of which are fixedly connected to the bottom surface of the upper mold 3. The top surface of the lower mold 2 has two positioning grooves 17, and the positioning plates 16 extend into the interior of the positioning grooves 17. Both the upper mold 3 and the lower mold 2 have water storage tanks 18 inside. Both water storage tanks 18 have a water inlet pipe 4 that passes through the upper mold 3 and the lower mold 2 and extends to the outside of them, and both water storage tanks 18 have a water outlet pipe 11 that passes through the upper mold 3 and the lower mold 2 and extends to the outside of them, which is fixedly connected to the interior of them.

[0033] Among them, the two positioning plates 16 are respectively attached to the two positioning grooves 17, the left side and the right side of the upper mold 3 are respectively attached to the left inner wall and the right inner wall of the placement frame 1, the water outlet pipe 11 is located to the right of the water inlet pipe 4, and the water storage tank 18 is a rectangular ring groove.

[0034] Specifically, the upper mold 3 and the lower mold 2 are fitted together, and the positioning plate 16 is inserted into the interior of the positioning groove 17. The fitting between the positioning plate 16 and the positioning groove 17 restricts the upper mold 3 and improves its stability. The coolant is delivered into the interior of the water storage tank 18 by the water inlet pipe 4 to cool the car wheel cover. The coolant is discharged by the water outlet pipe 11 and circulates.

[0035] It should be noted that both the inlet pipe 4 and the outlet pipe 11 are connected to the external coolant storage area.

[0036] The working principle of the above embodiments is as follows:

[0037] The upper mold 3 and the lower mold 2 are fitted together. The positioning plate 16 is inserted into the positioning groove 17 to restrict the upper mold 3 and improve its stability. The raw material is conveyed by the injection hole 12 and enters between the upper mold 3 and the lower mold 2 to inject the car wheel cover. The coolant is conveyed by the water inlet pipe 4 and enters the water storage tank 18 to cool the car wheel cover. The coolant is discharged by the water outlet pipe 11. After cooling is completed, the drive motor 6 is started. The output shaft of the drive motor 6 drives the screw 13 to rotate. The screw 13 is connected to the sliding plate 9 and the connecting plate 8 by threads and to the support block 15 and the support groove 14 by sliding. The screw 13 drives the sliding plate 9 and the connecting plate 8 to move upward, which in turn drives the upper mold 3 and the fixed plate 19 to move upward. The fixed plate 19 drives the push plate 22 to move upward through the linkage rod 20, pushing the car wheel cover and ejecting it.

[0038] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ejection mechanism for demolding injection-molded automotive wheel arches, comprising a placement rack, characterized in that: The placement frame is internally fixedly connected to a lower mold, and an upper mold is placed on the top surface of the lower mold. The lower mold is provided with an ejection assembly for ejecting the car wheel cover. The ejection assembly includes a fixing plate placed at the bottom of the lower mold. The inner bottom wall of the lower mold has two placement slots, and push plates are placed inside each of the two placement slots. The bottom surface of the lower mold has two connecting holes. The bottom surfaces of the two push plates are fixedly connected to a linkage rod with one end passing through the connecting hole and extending to the fixing plate. The two linkage rods are fixedly connected to the fixing plate. The left and right inner walls of the placement frame have connecting slots, and the left and right inner walls of the placement frame have sliding slots. The top surface of the upper mold has injection holes.

2. The ejection mechanism for injection molding demolding of automobile wheel arches according to claim 1, characterized in that: The push plate and the placement groove are fitted together, the placement groove and the connecting hole are connected, and the linkage rod and the connecting hole are fitted with a clearance.

3. The ejection mechanism for injection molding demolding of automobile wheel arches according to claim 1, characterized in that: The placement frame is equipped with a drive assembly for moving the upper mold and the fixed plate. The drive assembly includes a mounting frame, which is fixedly connected to the left side of the placement frame. A drive motor is fixedly mounted on the top surface of the mounting frame. Two sliding plates, each with one end extending into two sliding grooves, are fixedly connected to the bottom surface of the fixed plate. The sliding plate on the left side extends into the interior of the mounting frame. Two connecting plates, each with one end extending into two connecting grooves, are fixedly connected to the top surface of the upper mold. The connecting plate on the left side extends into the interior of the mounting frame. The output shaft of the drive motor is fixedly connected to a screw, one end of which passes through the mounting frame and extends into the bottom wall of the mounting frame. The screw passes through the left connecting plate and the left sliding plate. A support groove is provided on the left inner wall of the mounting frame. A support block, one end of which extends into the support groove, is fixedly connected to the left side of both the left connecting plate and the left sliding plate.

4. An ejection mechanism for injection molding demolding of automotive wheel arches according to claim 3, characterized in that: The sliding plate and the sliding groove are slidably connected, the connecting plate and the connecting groove are slidably connected, the connecting groove on the left side and the left sliding groove are both through grooves, and the placement rack and the mounting rack are both U-shaped racks.

5. An ejection mechanism for injection molding demolding of automotive wheel arches according to claim 3, characterized in that: The support block and the support groove are slidably connected, and the screw is rotatably connected through the bearing and the mounting bracket. The top surfaces of the connecting plate and the left sliding plate on the left side are both provided with threaded holes, and the screw passes through the two threaded holes and is threadedly connected to them.

6. An ejection mechanism for injection molding demolding of automotive wheel arches according to claim 3, characterized in that: A limiting component for restricting the upper mold is provided between the lower mold and the upper mold. The limiting component includes two positioning plates, both of which are fixedly connected to the bottom surface of the upper mold. Two positioning slots are provided on the top surface of the lower mold, and the positioning plates extend into the interior of the positioning slots. Water storage tanks are provided inside both the upper and lower molds. A water inlet pipe is fixedly connected to the interior of each of the two water storage tanks, with one end penetrating through the upper and lower molds and extending to the outside. A water outlet pipe is fixedly connected to the interior of each of the two water storage tanks, with one end penetrating through the upper and lower molds and extending to the outside.

7. An ejection mechanism for injection molding demolding of automotive wheel arches according to claim 6, characterized in that: The two positioning plates are respectively attached to the two positioning slots, and the left and right sides of the upper mold are respectively attached to the left and right inner walls of the placement frame.

8. An ejection mechanism for injection molding demolding of automotive wheel arches according to claim 6, characterized in that: The outlet pipe is located to the right of the inlet pipe, and the water storage tank is a rectangular annular groove.

Images