A rotomolding trolley for a rotomolding production line

By designing a rotational molding carriage with multi-angle rotation and positioning functions, the problem of uneven mixing caused by unidirectional rolling in the rotational molding production line was solved, simplifying the operation process and improving production efficiency.

CN224391687UActive Publication Date: 2026-06-23ZHEJIANG BENFAN MASCH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG BENFAN MASCH CO LTD
Filing Date
2025-07-04
Publication Date
2026-06-23

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    Figure CN224391687U_ABST
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Abstract

The utility model discloses a rotomolding trolley can be used to rotomolding assembly line, relates to the field of rotomolding trolley, including trolley frame and the electric control box of trolley frame front end setting, just the bottom of trolley frame is provided with trolley walking drive motor, the bottom of left side of trolley frame is provided with arm drive motor, and the bottom of right side is provided with disc drive motor. This rotomolding trolley can be used to rotomolding assembly line, through the walking drive motor of trolley frame bottom and the electric control box drive trolley frame, according to the requirement and carry out station transfer, the meshing of left side arm drive motor under upper end bevel gear, drive arm axle rotation, left side motor drive whole arm and disc rotate together, the start of disc drive motor, under the meshing of upper end bevel gear, drive axle rotation in the inside of arm axle, when the rotation of right side drive axle, through bevel gear and drive mould disc rotate, and arm disc together drive just realized the all -round rotation of mould reaches the mould movement mode of rotomolding requirement.
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Description

Technical Field

[0001] This utility model relates to the field of rotational molding cart technology, specifically a rotational molding cart that can be used in rotational molding production lines. Background Technology

[0002] The rotational molding trolley in a rotational molding production line usually refers to a conveyor tool specifically designed for the rotational molding process, and it is mainly used on the rotational molding production line.

[0003] In existing technologies, rotational molding production lines are prone to poor subsequent production efficiency due to uneven mixing during rotational molding operations.

[0004] To overcome the above shortcomings, a prior art Chinese patent (publication number CN217777526U) discloses a coordinating device for a plastic product processing production line. The production line consists of several adjacent and cooperating workstations, mainly including a feeding station, a rotational molding station, and a cooling station. The rotational molding station is equipped with a rotational molding machine and plastic ball molds. The rotational molding machine is a separate structure consisting of the machine body and a sealed furnace door. The machine body and furnace door are driven by a drive mechanism to move relative to each other and seal, allowing the plastic ball molds connected to the furnace door to simultaneously enter the rotational molding machine. This achieves synchronous entry of the plastic ball molds into the furnace and closure of the rotational molding machine. The advantages are: the rotational molding machine body and furnace door are separate structures, eliminating the need for manual or robotic arms to feed the molds into the machine; the molds can automatically connect to the rotational molding machine, facilitating automated production; and automatically synchronizing the rotational molding and cooling processes, thus improving product production efficiency.

[0005] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation. For example, when the rotational molding carriage is in the rotational molding production line, if the mixing is unidirectional, it is easy to cause uneven mixing due to long-term unidirectional operation. The overall operation is complicated and not conducive to subsequent use. Utility Model Content

[0006] The purpose of this invention is to provide a rotational molding trolley that can be used in a rotational molding production line to solve the problem mentioned in the background art that when the rotational molding trolley is in the rotational molding production line, if the mixing is unidirectional, it is easy to cause uneven mixing due to long-term unidirectional operation, and the overall operation is complicated and not conducive to subsequent use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotational molding trolley that can be used in a rotational molding production line, comprising a trolley frame and an electrical control box disposed at the front end of the trolley frame, wherein a trolley travel drive motor is disposed at the bottom of the trolley frame; an arm drive motor is disposed at the bottom left side of the trolley frame, and an arm drive end is mounted on the upper end of the arm drive motor; a disc drive motor is disposed at the bottom right side of the trolley frame, and a disc drive end is mounted on the upper end of the disc drive motor; a mold frame is disposed inside the arm drive end and the disc drive end, and a mold tooling is mounted on the upper end of the mold frame; a positioning mechanism is disposed between the disc drive end and the disc drive motor.

[0008] Furthermore, a sleeve shaft is fixedly installed on the upper end of the trolley frame, and the upper end of the sleeve shaft is fixedly installed on the lower end of the arm drive end, and a movable sleeve is rotatably installed on the inner side of the arm drive end through a bearing.

[0009] Furthermore, a drive shaft is rotatably mounted inside the sleeve shaft via bearings, and the lower end of the drive shaft meshes with the upper end of the arm drive motor via gears.

[0010] Furthermore, an arm drive shaft is rotatably mounted inside the movable sleeve via a bearing, and the outer side of the arm drive shaft meshes with the upper end of the drive shaft rod via a bevel gear.

[0011] Furthermore, a composite arm head is provided on the inner side of the movable sleeve, and both the upper and lower ends of the composite arm head are located on the inner side of the mold frame.

[0012] Furthermore, the inner side of the arm drive shaft meshes with the interior of the composite arm head via a bevel gear, and the drive shaft drives the mold frame to rotate laterally, and the arm drive shaft drives the movable sleeve to rotate.

[0013] Furthermore, the positioning mechanism is provided with a four-part positioning mechanism, which is sleeved on the outside of the disk drive end, and a positioning pin is provided inside the drive shaft on the right side, with the upper end of the positioning pin corresponding to the outside of the four-part positioning mechanism.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In use, a mold fixture is placed on the mold frame, and the material is placed inside the mold fixture. The trolley frame is driven by the trolley drive motor and the electrical control box at the bottom of the trolley frame, so that the trolley frame can move by the wheels at the bottom. It can sway according to the mold frame. With the start of the disc drive motor, the disc drive motor drives the right drive shaft to rotate under the meshing of the upper gear. When the right drive shaft rotates, it drives the disc drive end to rotate through the bevel gear. The rotation of the disc drive end can drive the compound arm head and the mold frame to rotate as a whole, so as to achieve rotation at multiple angles.

[0016] 2. During use, a positioning pin is set inside the drive shaft on the right side. The positioning pin can be embedded inside the four-part positioning mechanism sleeved on the outside of the disk drive end, which makes it easy for the disk to keep horizontal or vertical in the operating position and makes positioning convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below.

[0019] Figure 3 This is a frontal sectional view of the three-dimensional structure of this utility model.

[0020] Figure 4 This is a three-dimensional cross-sectional view of the composite arm head of this utility model.

[0021] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] Figure 6 This is a three-dimensional structural diagram of the four-equal positioning mechanism of this utility model.

[0023] In the diagram: 1. Trolley frame; 2. Electrical control box; 3. Trolley travel drive motor; 4. Arm drive motor; 5. Sleeve shaft; 6. Drive shaft rod; 7. Disc drive motor; 8. Disc drive end; 9. Composite arm head; 10. Arm drive shaft; 11. Movable sleeve; 12. Mold frame; 13. Mold tooling; 14. Positioning pin; 15. Quarter positioning mechanism; 16. Arm drive end. Detailed Implementation

[0024] 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.

[0025] Example 1: As Figures 1-4The technical solution shown is a rotational molding trolley that can be used in a rotational molding production line. To solve the problem of cumbersome unidirectional operation, the following is disclosed: a trolley frame 1 and an electrical control box 2 located at the front end of the trolley frame 1; a trolley travel drive motor 3 located at the bottom of the trolley frame 1; an arm drive motor 4 located at the bottom left side of the trolley frame 1, with an arm drive end 16 mounted on the upper end of the arm drive motor 4; a disc drive motor 7 located at the bottom right side of the trolley frame 1, with a disc drive end 8 mounted on the upper end of the disc drive motor 7; a mold frame 12 located inside the arm drive end 16 and the disc drive end 8, with a mold fixture 13 mounted on the upper end of the mold frame 12; a sleeve shaft 5 fixedly mounted on the upper end of the trolley frame 1, and the upper end of the sleeve shaft 5 fixedly mounted on the arm drive end 16. A movable sleeve 11 is rotatably mounted on the lower end of the moving end 16 and the inner side of the arm drive end 16 via a bearing. A drive shaft 6 is rotatably mounted inside the sleeve shaft 5 via a bearing, and the lower end of the drive shaft 6 meshes with the upper end of the arm drive motor 4 via a gear. An arm drive shaft 10 is rotatably mounted inside the movable sleeve 11 via a bearing, and the outer side of the arm drive shaft 10 meshes with the upper end of the drive shaft 6 via a bevel gear. A composite arm head 9 is provided inside the movable sleeve 11, and both the upper and lower ends of the composite arm head 9 are provided inside the mold frame 12. The inner side of the arm drive shaft 10 meshes with the interior of the composite arm head 9 via a bevel gear, and the drive shaft 10 drives the mold frame 12 to rotate laterally, and the arm drive shaft 10 drives the movable sleeve 11 to rotate.

[0026] In use, a mold fixture 13 is placed on the mold frame 12, and materials are placed inside the mold fixture 13. The trolley frame 1 is driven by the trolley drive motor 3 at the bottom of the trolley frame 1 and the electrical control box 2, allowing the trolley frame 1 to move via its wheels. At this time, with the start of the arm drive motor 4 and the disc drive motor 7, the drive shaft 6 is driven to rotate under the meshing of gears. The drive shaft 6 rotates inside the sleeve shaft 5. When the drive shaft 6 on the left side rotates inside the arm drive end 16, it drives the arm drive shaft 10 to rotate through the meshing of bevel gears. The arm drive shaft 10 rotates inside the movable sleeve 11, driving the composite arm head 9. The internal gears cause the outer mold frame 12 to rotate. When the mold frame 12 rotates, it drives the upper mold tooling 13 to rotate. The tooling 13 can sway according to the mold frame 12. With the start of the disc drive motor 7, the disc drive motor 7 drives the right drive shaft 6 to rotate under the meshing of the upper gear. When the right drive shaft 6 rotates, it drives the disc drive end 8 to rotate through the bevel gear. The rotation of the disc drive end 8 can drive the composite arm head 9 and the mold frame 12 to rotate as a whole, so that rotation can be achieved at multiple angles. The right disc drive motor 7 drives the arm end, and the left arm drive motor drives the mold disk in the middle of the arm.

[0027] Example 2: Figure 1 , Figure 4 , Figure 5 and Figure 6The technical solution shown, based on Embodiment 1, discloses the following to solve the problem of inconvenient positioning: a positioning mechanism is provided between the disk drive end 8 and the disk drive motor 7. The positioning mechanism is provided with a four-part positioning mechanism 15, which is sleeved on the outside of the disk drive end 8. A positioning pin 14 is provided inside the right drive shaft 6, and the upper end of the positioning pin 14 corresponds to the outside of the four-part positioning mechanism 15.

[0028] In use, a positioning pin 14 is set inside the drive shaft 6 on the right side. The positioning pin 14 can be embedded inside the four-part positioning mechanism 15 sleeved on the outside of the disk drive end 8, so that the disk can be kept horizontal or vertical in the operating position, and positioning is convenient.

[0029] 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. A rotational molding trolley that can be used in a rotational molding production line, comprising a trolley frame (1) and an electrical control box (2) disposed at the front end of the trolley frame (1), and a trolley travel drive motor (3) disposed at the bottom of the trolley frame (1). Its features are: An arm drive motor (4) is provided at the bottom left side of the trolley frame (1), and an arm drive end (16) is installed at the upper end of the arm drive motor (4). A disc drive motor (7) is provided at the bottom right side of the trolley frame (1), and a disc drive end (8) is installed at the upper end of the disc drive motor (7). A mold frame (12) is provided on the inner side of the arm drive end (16) and the disk drive end (8), and a mold tooling (13) is installed on the upper end of the mold frame (12). A positioning mechanism is provided between the disk drive end (8) and the disk drive motor (7).

2. A rotational molding cart that can be used in a rotational molding production line according to claim 1, characterized in that: The upper end of the trolley frame (1) is fixedly installed with a sleeve shaft (5), and the upper end of the sleeve shaft (5) is fixedly installed at the lower end of the arm drive end (16). The inner side of the arm drive end (16) is rotatably installed with a movable sleeve (11) through a bearing.

3. A rotational molding cart that can be used in a rotational molding production line according to claim 2, characterized in that: The sleeve shaft (5) is rotatably mounted with a drive shaft (6) through a bearing, and the lower end of the drive shaft (6) meshes with the upper end of the arm drive motor (4) through a gear.

4. A rotational molding cart that can be used in a rotational molding production line according to claim 3, characterized in that: The arm drive shaft (10) is rotatably mounted inside the movable sleeve (11) via a bearing, and the outer side of the arm drive shaft (10) meshes with the upper end of the drive shaft rod (6) via a bevel gear.

5. A rotational molding cart that can be used in a rotational molding production line according to claim 4, characterized in that: The movable sleeve (11) is provided with a composite arm head (9) inside, and both the upper and lower ends of the composite arm head (9) are provided inside the mold frame (12).

6. A rotational molding cart that can be used in a rotational molding production line according to claim 5, characterized in that: The inner side of the arm drive shaft (10) meshes with the interior of the composite arm head (9) through a bevel gear, and the drive shaft (10) drives the mold frame (12) to rotate laterally, and the arm drive shaft (10) drives the movable sleeve (11) to rotate.

7. A rotational molding cart that can be used in a rotational molding production line according to claim 6, characterized in that: The positioning mechanism is provided with a four-part positioning mechanism (15), and the four-part positioning mechanism (15) is sleeved on the outside of the disk drive end (8). The right drive shaft rod (6) is provided with a positioning pin (14), and the upper end of the positioning pin (14) corresponds to the outside of the four-part positioning mechanism (15).