Cover taking device for rotational molding machine mold

Abstract

The utility model discloses a cover taking device for a mold of a rotational molding machine, belongs to the technical field of rotational molding, and solves the problem that the mode of taking out a mold cover and then hoisting the mold cover by using auxiliary equipment such as a travelling crane or a travelling crane in the market at present consumes a large amount of manpower, the cover taking device for the mold of the rotational molding machine comprises a support frame, the supporting frame comprises a first supporting frame and two second supporting frames, and the two second supporting frames are symmetrically arranged on the two sides of the first supporting frame; a clamping mechanism and a first transverse moving mechanism are arranged on the first supporting frame, and a second transverse moving mechanism is arranged on the second supporting frame. The clamping mechanism is used for being matched with a fixing piece on the mold cover and used for driving the mold cover to move up and down. The first transverse moving mechanism is used for driving the clamping mechanism to horizontally move on the first supporting frame. The second transverse moving mechanism drives the first transverse moving mechanism and the clamping mechanism to horizontally move on the second supporting frame.

Description

Technical Field

[0001] This utility model relates to the technical field of rotational molding, and in particular to a cap removal device for rotational molding machine molds. Background Technology

[0002] Rotational molding, also known as rotational molding, is a method of hollow plastic molding. The process involves first adding plastic raw material into a mold, then continuously rotating and heating the mold along two perpendicular axes. Under the influence of gravity and heat, the plastic raw material gradually and evenly coats, melts, and adheres to the entire surface of the mold cavity, forming the desired shape. The final product is then cooled and solidified.

[0003] After the product cools and sets, the mold is opened by hydraulic or mechanical means. After the mold is opened, it is usually necessary to use auxiliary equipment such as cranes or gantry cranes to remove the mold cover and lift it up. The mold cover is then transported to a designated storage location so that the operator can take the molded product out of the mold. However, using auxiliary equipment such as cranes or gantry cranes to remove the mold cover and lift it up consumes a lot of manpower. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a cap removal device for rotational molding machine molds.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A cover removal device for a rotational molding machine mold includes a support frame. The support frame includes a first support frame and two second support frames, which are symmetrically arranged on both sides of the first support frame. The first support frame is provided with a clamping mechanism and a first lateral movement mechanism, and the second support frame is provided with a second lateral movement mechanism. The clamping mechanism is used to cooperate with a fixing member on the mold cover and to drive the mold cover to move up and down. The first lateral movement mechanism is used to drive the clamping mechanism to move horizontally on the first support frame. The second lateral movement mechanism drives the first lateral movement mechanism and the clamping mechanism to move horizontally on the second support frame.

[0007] The effect of adopting the above technical solution is that when it is necessary to remove the mold cover, the clamping mechanism is activated so that the clamping mechanism clamps the fixing part on the mold cover. Then the clamping mechanism drives the mold cover to rise to separate the mold cover from the mold body. Then, the clamping mechanism is moved to the designated position through the first transverse mechanism or the second transverse mechanism to achieve the purpose of removing the mold cover and storing it in the designated position. This operation does not require human intervention and saves time and effort.

[0008] Furthermore, the clamping mechanism includes a platform disposed on the first transverse mechanism and a horizontal moving component and a vertical moving component disposed on the platform. There are two horizontal moving components and two vertical moving components. The two horizontal moving components move in a direction that approaches or moves away from each other. The two vertical moving components are respectively connected to the two horizontal moving components. The vertical moving components include grippers, which are used to cooperate with the fixing components to clamp the mold cover.

[0009] The effect of adopting the above technical solution is that the vertical moving component drives the gripper to descend. After the gripper descends to a position that matches the position of the fixing part, the horizontal moving component is activated, so that the gripper clamps the fixing part. Then the vertical moving component drives the gripper to rise, so that the mold cover is separated from the mold body, so that the molded product can be taken out.

[0010] Furthermore, each of the vertical moving components includes an electric screw jack mounted on the horizontal moving component. The two electric screw jacks are connected by a first telescopic coupling. One end of each electric screw jack is connected to two vertical mounting rods via a linkage plate. Each vertical mounting rod is provided with a vertical sliding rail. The horizontal moving component is provided with a slider adapted to the vertical sliding rail. The gripper is connected to the other end of the electric screw jack and is connected to the vertical mounting rod.

[0011] The effect of adopting the above technical solution is that the first telescopic coupling can ensure the common rotation of the two electric screw jacks and transmit torque. It can ensure high alignment of the two shafts and transmit large torque when running at high speed. When the electric screw jack is driven, it drives the vertical mounting rod to slide up and down, and synchronously drives the gripper to slide up and down, thus achieving the purpose of driving the mold cover to slide up and down.

[0012] Furthermore, the horizontal moving component includes a horizontal slide rail and a transverse plate disposed on the platform. The transverse plate is connected to the horizontal slide rail via a slider. The platform is also provided with a driving component for driving the transverse plate to reciprocate.

[0013] Furthermore, the driving component is a cylinder, and the extension rod of the cylinder is connected to the transverse plate.

[0014] The effect of adopting the above technical solution is that two symmetrically arranged cylinders drive the corresponding transverse plates to slide on the horizontal slide rail. The electric screw jack is set on the transverse plate, and the piston rod of the cylinder can indirectly drive the two grippers to move towards each other or away from each other to achieve clamping or loosening of the fixing parts.

[0015] Furthermore, the platform is also equipped with hydraulic buffers located on both sides of the transverse plate.

[0016] The effect of adopting the above technical solution is that when the transverse plate slides under the drive of the cylinder, the setting of the hydraulic damper can provide buffer for the transverse plate, so that the transverse plate can be more stable when it reaches the stop position and reduce vibration.

[0017] Furthermore, the first lateral movement mechanism includes a first slide rail, which is mounted on a first support frame, and the platform is connected to the first slide rail via a slider; the first lateral movement mechanism also includes a first rack mounted on one side of the first support frame, and a first motor mounted on the platform, the output shaft of which is connected to a first gear meshing with the first rack, thereby driving the platform to slide on the first slide rail through the meshing of the first gear and the first rack.

[0018] The effect of adopting the above technical solution is that the first motor drives the first gear to rotate, and the first rack is fixed on the first support frame. When the first gear meshes with the first rack, the rotation of the first gear can drive the entire platform to slide. Under the sliding of the platform, the entire clamping mechanism and lifting mechanism will move accordingly, thus achieving the purpose of moving the mold cover.

[0019] Furthermore, the second lateral movement mechanism includes a second slide rail mounted on a second support frame, the second slide rail being perpendicular to the first slide rail, a second rack mounted on the second support frame, a second motor mounted on the first support frame, and a second gear connected to the output shaft of the second motor meshing with the second rack. The first support frame is moved on the second slide rail by the meshing of the second gear and the second rack.

[0020] The effect of adopting the above technical solution is that when the second motor starts, it drives the second gear to rotate. The second rack is fixed on the second support frame. When the second gear meshes with the second rack, the rotation of the second gear drives the first support frame and the structure set on the first support frame to slide along the direction of the second support frame, thereby achieving the purpose of storing the mold cover in the designated position.

[0021] Furthermore, the two second motors are connected via a second telescopic coupling.

[0022] Furthermore, a dust cover is provided above the first telescopic coupling.

[0023] The effect of adopting the above technical solution is that the dust cover can reduce the possibility of dust settling on the first telescopic coupling after long-term use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a top view of an embodiment of the present utility model;

[0026] Figure 3 for Figure 2 Enlarged view of part A in the image;

[0027] Figure 4 for Figure 2 Enlarged view of part B in the image;

[0028] Figure 5 for Figure 1 Enlarged view of section C in the image;

[0029] Figure 6 This is a partial view highlighting the first gear and the first rack in an embodiment of the present invention;

[0030] Figure 7 The diagram shows a partial view highlighting the second gear and the second rack in an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. First support frame; 3. Second support frame; 4. Clamping mechanism; 5. First transverse movement mechanism; 6. Second transverse movement mechanism; 7. Platform; 8. Horizontal moving component; 9. Vertical moving component; 10. Transverse plate; 11. Horizontal slide rail; 12. Gripper; 13. Electric screw jack; 14. Vertical mounting rod; 15. Vertical slide rail; 16. Cylinder; 17. Hydraulic damper; 18. First slide rail; 19. First motor; 20. First gear; 21. First rack; 22. Second slide rail; 23. Second motor; 24. Second gear; 25. Second rack; 26. First telescopic coupling; 27. Dust cover; 28. Linkage plate; 29. ​​Second telescopic coupling. Detailed Implementation

[0032] The principles and features of this utility model are described below with reference to all the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0033] This utility model discloses a cap removal device for rotational molding machine molds.

[0034] Reference Figures 1 to 7A cover removal device for a rotational molding machine mold includes a support frame 1, which is located beside the rotational molding machine. The support frame 1 includes a first support frame 2 and two second support frames 3, which are symmetrically arranged on both sides of the first support frame 2. The first support frame 2 and the second support frames 3 are arranged perpendicularly. The first support frame 2 is provided with a clamping mechanism 4 and a first lateral movement mechanism 5, and the second support frame 3 is provided with a second lateral movement mechanism 6. The clamping mechanism 4 is used to cooperate with a fixing member on the mold cover and to drive the mold cover to move up and down. The fixing member can be a steel pipe welded to the mold cover or other structures. The first lateral movement mechanism 5 is used to drive the clamping mechanism 4 to move horizontally on the first support frame 2. The second lateral movement mechanism 6 drives the first lateral movement mechanism 5 and the clamping mechanism 4 to move horizontally on the second support frame 3.

[0035] When it is necessary to open the mold cover, the clamping mechanism 4 is activated, which clamps the fixing part on the mold cover. Then, the clamping mechanism 4 drives the mold cover to rise, so as to separate the mold cover from the mold body. Then, the clamping mechanism 4 is moved to the designated position by the first transverse mechanism 5 or the second transverse mechanism 6, so as to remove the mold cover and store it in the designated position. This operation does not require human intervention, saving time and effort.

[0036] Reference Figure 1 and Figure 2 The first transverse mechanism 5 includes a first slide rail 18 mounted on the first support frame 2. The first slide rail 18 extends along the length of the first support frame 2. The clamping mechanism 4 is connected to the first slide rail 18 via a slider so that the clamping mechanism 4 can slide on the first slide rail 18.

[0037] Furthermore, the first transverse mechanism 5 also includes a first rack 21 disposed on one side of the first support frame 2, and a first motor 19 is disposed on the platform 7 of the clamping mechanism 4. The base of the first motor 19 is fixedly connected to the platform 7, and the output shaft of the first motor 19 is connected to a first gear 20 that meshes with the first rack 21. Figure 2 and Figure 6 As shown, by engaging the first gear 20 with the first rack 21, the entire clamping mechanism 4 can slide on the first slide rail 18, thereby achieving the purpose of moving the mold cover.

[0038] The second lateral movement mechanism 6 includes a second slide rail 22 mounted on the second support frame 3. The second slide rail 22 is perpendicular to the first slide rail 18. Figure 1 and Figure 2 As shown, the second support frame 3 is also provided with a second rack 25, and the first support frame 2 is fixedly connected to a second motor 23. The output shaft of the second motor 23 is connected to a second gear 24 that meshes with the second rack 25. Figure 7As shown, when the second motor 23 starts, it drives the second gear 24 to rotate. The second rack 25 is fixed on the second support frame 3. When the second gear 24 meshes with the second rack 25, the rotation of the second gear 24 drives the first support frame 2 and the structure set on the first support frame 2 to slide along the direction of the second support frame 3, so as to realize the purpose of storing the mold cover in the designated position.

[0039] Furthermore, the two second motors 23 are connected by a second telescopic coupling 29 to ensure that the output shafts of the two motors rotate together and transmit torque. This ensures high alignment between the two shafts and transmits a large torque even at high speeds. A dust cover may or may not be provided above the second telescopic coupling 29.

[0040] The clamping mechanism 4 includes a platform 7 mounted on the first transverse mechanism 5, and horizontal moving parts 8 and vertical moving parts 9 mounted on the platform 7. The bottom surface of the platform 7 is connected to the first slide rail 18 via a slider. There are two horizontal moving parts 8, which move towards or away from each other. There are two sets of vertical moving parts 9, which are respectively connected to the corresponding horizontal moving parts 8.

[0041] In this embodiment of the invention, each set of vertical moving parts 9 includes two vertical mounting rods 14. The two vertical mounting rods 14 are symmetrically arranged on both sides of each horizontal moving part 8, and the ends of the two vertical mounting rods 14 are connected by a linkage plate 28, which fixes the two vertical mounting rods 14 in place. Figure 1 and Figure 5 As shown, the two vertical mounting rods 14 are raised and lowered synchronously. The end of the vertical mounting rod 14 away from the linkage plate 28, that is, the bottom of the vertical mounting rod 14, is provided with a clamp 12. The mold cover is clamped by the clamp 12 cooperating with the fixing part.

[0042] The vertical moving component 9 also includes an electric screw jack 13 mounted on the horizontal moving component 8. In this embodiment, two electric screw jacks 13 are provided, each mounted on a corresponding horizontal moving component 8. The extension shaft of the electric screw jack 13 is fixed to the linkage plate 28. By starting the electric screw jack 13, the vertical mounting rod 14 can be driven to move up and down. Since the electric screw jack 13 is prior art, its specific structure will not be described in this embodiment.

[0043] Each vertical mounting rod 14 is equipped with a vertical sliding rail 15, while the horizontal moving part 8 is equipped with a slider that matches the vertical sliding rail 15, so that the vertical mounting rod 14 can slide more conveniently under the action of the electric screw jack 13.

[0044] To ensure the stability and synchronization of the vertical moving parts 9 on both sides, a first telescopic coupling 26 is also provided on the horizontal moving part 8. The two electric screw jacks 13 are connected through the first telescopic coupling 26 to ensure that the two electric screw jacks 13 rotate together and transmit torque. It can ensure that the two shafts have high alignment and transmit large torque when running at high speed.

[0045] The horizontally moving component 8 is also equipped with a dust cover 27, which covers the first telescopic coupling 26. Because hydraulic oil is present in the equipment, prolonged operation inevitably leads to the accumulation of hydraulic oil on the surface of the first telescopic coupling 26. The presence of hydraulic oil makes the surface of the first telescopic coupling 26 somewhat sticky. The dust cover 27 reduces the possibility of dust adhering to the surface of the first telescopic coupling 26, thus serving a dust-proof function. Furthermore, a handle is provided on top of the dust cover 27 for easy access during disassembly, maintenance, or replacement.

[0046] The horizontal moving component 8 includes a horizontal slide rail 11 and a transverse plate 10 mounted on the platform 7. Two transverse plates 10 are provided, and two electric screw jacks 13 are respectively mounted on the corresponding transverse plates 10. The transverse plates 10 are connected to the horizontal slide rail 11 via sliders. The platform 7 also has a driving component for driving the transverse plates 10 to reciprocate. In this embodiment, the driving component is a cylinder 16. The base of the cylinder 16 is fixed on the transverse plate 10. Two cylinders 16 are respectively mounted on both sides of the platform 7, and the two cylinders 16 are symmetrically arranged. The extension rods of the two cylinders 16 are respectively connected to the transverse plates 10 on both sides. The two symmetrically arranged cylinders 16 drive the corresponding transverse plates 10 to slide on the horizontal slide rail 11. The electric screw jacks 13 are mounted on the transverse plates 10, and can indirectly drive the two grippers 12 to move towards or away from each other through the extension and retraction of the piston rods of the cylinders 16, thereby clamping or releasing the fixing components.

[0047] Furthermore, the platform 7 is also provided with hydraulic buffers 17 located on both sides of each transverse plate 10. Each transverse plate 10 corresponds to two hydraulic buffers 17. When the transverse plate 10 slides under the drive of the cylinder 16, the setting of the hydraulic buffers 17 can provide buffer for the transverse plate 10, so that the transverse plate 10 can be more stable when it reaches the stop position and reduce vibration.

[0048] The working principle of the hydraulic damper 17 is as follows: The main structure of the hydraulic damper 17 consists of a body, shaft, bearing, inner tube, piston, hydraulic shaft, and spring. When the shaft is impacted by an external force, it will drive the piston to squeeze the hydraulic oil in the inner tube. After being pressurized, the hydraulic oil will be discharged one by one through the drain hole of the inner tube. At the same time, the hydraulic oil discharged from the inner tube will also flow back into the inner tube through the return hole. When the external force disappears, the spring will push the piston back to the starting point to wait for the next action. Based on this principle, the hydraulic damper 17 can effectively stop a moving object in a balanced manner.

[0049] The present invention provides a cap removal device for a rotational molding machine mold, the implementation principle of which is as follows:

[0050] When the molded product needs to be removed, the second transverse mechanism 6 and the first transverse mechanism 5 are activated first, according to the position of the mold cover, to align the clamping mechanism 4 with the mold cover. This alignment is a rough alignment. Then, the cylinder 16 is activated according to the position of the fixing parts on the mold cover. After the cylinder 16 is activated, the extension of the piston rod of the cylinder 16 pushes the two transverse plates 10 to slide in a direction away from each other. The sliding of the transverse plates 10 causes the two grippers 12 to open. Then, the activation of the electric screw jack 13 drives the vertical mounting plate to slide downward, that is, drives the grippers 12 to slide downward (the opening and lifting of the grippers 12 are not sequentially related; they can be opened first and then lifted). (The mold cover can be lowered or lowered first and then opened). When the gripper 12 descends to a position where it can engage with the fixing part, the piston rod of the cylinder 16 retracts according to the position of the fixing part, and the gripper 12 clamps onto the fixing part to fix it. Since the fixing part is fixed on the mold cover, the gripper 12 clamps the fixing part, which is equivalent to the gripper 12 indirectly clamping the mold cover. Then the electric screw jack 13 starts, driving the vertical mounting rod 14 and the gripper 12 to slide upward to detach the mold cover. Then the mold cover is moved to the storage position through the first transverse mechanism 5 and the second transverse mechanism 6. This operation does not require manual intervention and is fully automated.

[0051] It should be noted that when the mold is not changed, the control program in the system is basically fixed, that is, no program changes are required. When different molds are changed, the program in the system needs to be adjusted. The content of the program and the adjustment of the program are not described in this utility model.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cap removal device for a rotational molding die, comprising a support frame (1), the support frame (1) comprising a first support frame (2) and two second support frames (3), the two second support frames (3) being symmetrically arranged on both sides of the first support frame (2); characterized in that: The first support frame (2) is provided with a clamping mechanism (4) and a first transverse movement mechanism (5), and the second support frame (3) is provided with a second transverse movement mechanism (6); the clamping mechanism (4) is used to cooperate with the fixing part on the mold cover and to drive the mold cover to move up and down; the first transverse movement mechanism (5) is used to drive the clamping mechanism (4) to move horizontally on the first support frame (2); the second transverse movement mechanism (6) drives the first transverse movement mechanism (5) and the clamping mechanism (4) to move horizontally on the second support frame (3).

2. The cap removal device for a rotational molding machine mold according to claim 1, characterized in that: The clamping mechanism (4) includes a platform (7) on the first transverse mechanism (5) and a horizontal moving component (8) and a vertical moving component (9) on the platform (7). There are two horizontal moving components (8) and two vertical moving components (9). The two horizontal moving components (8) move towards each other or away from each other. The two vertical moving components (9) are respectively connected to the two horizontal moving components (8). The vertical moving component (9) includes a gripper (12). The gripper (12) is used to cooperate with the fixing member to clamp the mold cover.

3. A cap removal device for a rotational molding machine mold according to claim 2, characterized in that: Each of the vertical moving parts (9) includes an electric screw jack (13) mounted on the horizontal moving part (8). The two electric screw jacks (13) are connected by a first telescopic coupling (26). One end of the electric screw jack (13) is connected to two vertical mounting rods (14) via a linkage plate (28). Each vertical mounting rod (14) is provided with a vertical sliding rail (15). The horizontal moving part (8) is provided with a slider adapted to the vertical sliding rail (15). The gripper (12) is connected to the other end of the electric screw jack (13) and is connected to the vertical mounting rod (14).

4. A cap removal device for a rotational molding machine mold according to claim 3, characterized in that: The horizontal moving component (8) includes a horizontal slide rail (11) and a transverse plate (10) provided on the platform (7). The transverse plate (10) is connected to the horizontal slide rail (11) by a slider. The platform (7) is also provided with a driving component for driving the transverse plate (10) to reciprocate.

5. A cap removal device for a rotational molding machine mold according to claim 4, characterized in that: The driving component is a cylinder (16), and the telescopic rod of the cylinder (16) is connected to the transverse plate (10).

6. A cap removal device for a rotational molding machine mold according to claim 4, characterized in that: The platform (7) is also equipped with hydraulic buffers (17) located on both sides of the transverse plate (10).

7. A cap removal device for a rotational molding machine mold according to claim 4, characterized in that: The first transverse mechanism (5) includes a first slide rail (18), which is mounted on the first support frame (2). The platform (7) is connected to the first slide rail (18) via a slider. The first transverse mechanism (5) also includes a first rack (21) mounted on one side of the first support frame (2). The platform (7) is equipped with a first motor (19). The output shaft of the first motor (19) is connected to a first gear (20) that meshes with the first rack (21). The first gear (20) meshes with the first rack (21) to drive the platform (7) to slide on the first slide rail (18).

8. A cap removal device for a rotational molding machine mold according to claim 7, characterized in that: The second transverse mechanism (6) includes a second slide rail (22) mounted on the second support frame (3). The second slide rail (22) is perpendicular to the first slide rail (18). The second support frame (3) is also provided with a second rack (25). The first support frame (2) is provided with a second motor (23). The output shaft of the second motor (23) is connected to a second gear (24) that meshes with the second rack (25). The first support frame (2) is driven to move on the second slide rail (22) by the meshing of the second gear (24) and the second rack (25).

9. A cap removal device for a rotational molding machine mold according to claim 8, characterized in that: The two second motors (23) are connected by a second telescopic coupling (29).

10. A cap removal device for a rotational molding machine mold according to claim 3, characterized in that: A dust cover (27) is provided above the first telescopic coupling (26).

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