An interlaced feeding trolley device for plastic tray production

Abstract

The utility model discloses an interlaced loading trolley equipment for plastic tray production, which is used for feeding materials to a plastic tray pressing equipment, further comprises a double-layer conveying frame, the double-layer conveying frame is arranged on one side of the pressing equipment, and an upper trolley and a lower trolley are respectively arranged on the double-layer conveying frame in a sliding mode, a bracket for feeding the upper die of the combined pressing equipment is installed on the upper trolley, and a conveying belt for feeding the lower die of the combined pressing equipment is installed on the lower trolley. Compared with the conventional double-side split loading structure, the unilateral integrated layout leaves space on the other side, and the artificial operation area is widened; the double-layer interlaced sliding trolley can enter the pressing station at the same time, and the cantilever structure can avoid mutual interference of the feeding and discharging mechanisms; meanwhile, the conveying belt of the lower trolley is used as a material spreading device, the structure of using a cylinder to push the raw materials downward is saved, and the operation equipment is simplified.

Description

Technical Field

[0001] This utility model relates to the field of plastic pallet production technology, and in particular to a staggered feeding trolley device for plastic pallet production. Background Technology

[0002] Plastic pallets are logistics loading and unloading units made primarily of polyethylene, polypropylene, and other raw materials, and are typically produced using molding processes such as injection molding and blow molding.

[0003] In conventional molding processes for plastic pallets, uneven material distribution is common. This new process involves coating the cavities of the upper and lower molds with a plastic film. After mold closing, the molds are precisely pressed together, ensuring the film conforms to the mold cavity contours and completes the shaping. The finished product is then cooled and solidified at a constant temperature. While this method allows for uniform material distribution and improves pallet wall thickness deviations, in actual production, the film is prone to shifting and wrinkling, and insufficient mold sealing can easily lead to surface defects and missing material at edges, affecting the finished product's pass rate and overall load-bearing capacity.

[0004] The existing plastic pallet compression molding process requires independent loading operations for the upper and lower molds. Two sets of counter-ejection cylinders are used to drive the upper and lower molds respectively to complete the loading process. These two loading mechanisms extend from both sides of the equipment into the pressing station, completely occupying the space on both sides of the equipment and significantly reducing the on-site manual operation area. Furthermore, the placement and removal of pallet reinforcing ribs before and after mold pressing still rely on manual operation, with only one side of the workspace causing interference for personnel. Utility Model Content

[0005] The purpose of this invention is to provide a staggered feeding trolley device for plastic pallet production, so as to solve the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a staggered feeding trolley device for plastic pallet production, which is used to convey materials to a plastic pallet pressing device, and further includes a double-layer conveyor frame. The double-layer conveyor frame is disposed on one side of the pressing device, and an upper trolley and a lower trolley are slidably disposed on the double-layer conveyor frame respectively. The upper trolley is equipped with a bracket for feeding materials to the upper mold of the pressing device, and the lower trolley is equipped with a conveyor belt for feeding materials to the lower mold of the pressing device.

[0007] As a further description of the above technical solution: the bracket is cantilevered on the upper trolley facing the pressing equipment, and the surface of the bracket is provided with filler; the conveyor belt is cantilevered on the lower trolley facing the pressing equipment.

[0008] As a further description of the above technical solution: the double-layer conveyor frame includes an upper rail and a lower rail, and the upper trolley and the lower trolley are respectively servo-slidably mounted on the upper rail and the lower rail.

[0009] As a further description of the above technical solution: two sets of extrusion equipment are provided on one side of the double-layer conveyor frame, and a reinforcing rib feeding device is placed on the same side of the pressing equipment as the extrusion equipment.

[0010] As a further description of the above technical solution: both sets of extrusion equipment are provided with discharge ends, and the two discharge ends are respectively located directly above the bracket and the conveyor belt.

[0011] As a further description of the above technical solution: the pressing equipment includes a lower mold and an upper mold, and the upper mold is provided with a mold cavity that cooperates with the filler.

[0012] As a further description of the above technical solution: the reinforcing rib feeding device includes a slide rail and a sliding frame slidably disposed on the slide rail, a lifting frame is provided at the bottom of the sliding frame, and a mechanical gripper for clamping and preventing the reinforcing rib from being attached is provided at the bottom of the lifting frame.

[0013] This utility model provides a staggered loading trolley device for plastic pallet production. It offers the following advantages: compared to traditional double-sided split loading structures, the single-sided integrated layout frees up space on the other side, expanding the manual operation area; the double-layered staggered sliding trolleys can simultaneously enter the pressing station, and the cantilever structure avoids interference between the loading and unloading mechanisms; simultaneously, the conveyor belt feeding device of the lower trolley eliminates the need for a cylinder to push the raw materials downwards, simplifying the operation.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0015] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the upper and lower trolleys of this utility model;

[0019] Figure 4 A three-dimensional structural diagram of the feeding process of the pressing equipment of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the reinforcing rib feeding device of this utility model;

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the pressing device of this utility model from the bottom view.

[0022] Legend:

[0023] 1. Double-layer conveyor frame; 101. Lower rail; 102. Upper rail; 2. Lower trolley; 3. Conveyor belt; 4. Upper trolley; 5. Bracket; 6. Filler; 7. Extrusion equipment; 8. Discharge end; 9. Reinforcing rib feeding equipment; 901. Slide rail; 902. Sliding frame; 903. Lifting frame; 904. Mechanical gripper; 10. Pressing equipment; 11. Lower mold; 12. Upper mold; 13. Mold cavity. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-6 A staggered feeding trolley device for plastic pallet production includes a double-layer conveyor frame 1. A pressing device 10 is installed at one end of the double-layer conveyor frame 1. Two sets of extrusion devices 7 are installed on one side of the double-layer conveyor frame 1. A reinforcing rib feeding device 9 is placed on the same side of the pressing device 10 and the extrusion device 7. The double-layer conveyor frame 1 includes an upper rail 102 and a lower rail 101. An upper trolley 4 and a lower trolley 2 are respectively servo-slidably mounted on the upper rail 102 and the lower rail 101. Both the upper trolley 4 and the lower trolley 2 are cantilever structures. A bracket 5 is fixedly installed on the top of the upper trolley 4. The filler 6 is placed on the bracket 5, and the top of the lower trolley 2 is equipped with a conveyor belt 3. The feeding and pressing processes are concentrated on one side of the equipment. With the upper and lower double-layer tracks and the servo-driven upper trolley 4 and lower trolley 2, when the extrusion equipment 7 extrudes the material, the upper trolley 4 and lower trolley 2 move to receive the material. The cantilevered trolley structure is used to realize the staggered feeding of the upper and lower material stations. The bottom of the upper trolley 4 is equipped with a cylinder device for lifting the filler 6. The filler 6 is supported by the lifting bracket 5 to realize the feeding of the upper mold 12. The conveyor belt 3 transports the bottom raw material and moves the trolley backward to lay the raw material on the conveyor belt 3 on the lower mold 11.

[0026] As a preferred technical solution in this embodiment, both sets of extrusion equipment 7 are provided with discharge ends 8, and the two discharge ends 8 are respectively located directly above the bracket 5 and the conveyor belt 3; the extruded plastic film raw material can be discharged through the discharge ends 8, and with the uniform movement of the trolley below, the material can be fed on the upper trolley 4 and the lower trolley 2.

[0027] As a preferred technical solution of this embodiment, the pressing device 10 includes a lower mold 11 and an upper mold 12. The upper mold 12 is provided with a mold cavity 13 that cooperates with the filler 6. The upper mold 12 is provided with a clamping mechanism around its perimeter that can clamp the plastic film material. By precisely matching and aligning the mold cavity 13 with the filler 6, the material can be pressed with the mold after feeding to complete the filling and shaping of the inner cavity of the tray. At the same time, the clamping mechanism around the upper mold 12 clamps and fixes the four sides of the plastic film material. The mold cavity 13 of the upper mold 12 also has a negative pressure adsorption structure inside to ensure the stability of feeding the material into the upper mold 12.

[0028] As a preferred technical solution of this embodiment, the reinforcing rib feeding device 9 includes a slide rail 901 and a sliding frame 902 slidably disposed on the slide rail 901. A lifting frame 903 is provided at the bottom of the sliding frame 902, and a mechanical gripper 904 for clamping and preventing the reinforcing rib is provided at the bottom of the lifting frame 903. After the upper mold 12 and lower mold 11 are fed, the upper trolley 4 and lower trolley 2 leave the pressing device 10. The sliding frame 902 realizes horizontal displacement conveying on the slide rail 901, and the lifting frame 903 realizes the lifting and lowering of the mechanical gripper 904. The mechanical gripper 904 can place the clamped reinforcing rib above the raw material of the lower mold 11. With the subsequent pressing of the upper and lower molds 11, the production of the plastic pallet can be realized.

[0029] Working Principle: The upper trolley 4 and lower trolley 2 are respectively positioned below the discharge end 8 of the extrusion equipment 7 on the upper and lower tracks 101. The two extrusion equipment 7 simultaneously extrude plastic film raw materials. With the uniform movement of the upper trolley 4 and lower trolley 2, the raw materials fall onto the filler 6 of the upper trolley 4 and the conveyor belt 3 of the lower trolley 2, respectively. Subsequently, the servo system drives the two cantilevered trolleys to slide synchronously to the pressing station. After entering the station, the upper trolley 4 uses the bottom cylinder to lift the bracket 5 and the filler 6, accurately feeding the plastic film raw materials it carries into the mold cavity 13 of the upper mold 12. With the help of the clamping mechanism around the mold and the internal negative pressure adsorption structure, the raw materials are fixed. Simultaneously, the lower trolley 2 moves backward and starts the conveyor belt 3, evenly spreading the plastic film raw materials on the surface of the lower mold 11. The bottom of the lower mold 11 is equipped with a vacuum adsorption device to adsorb and fix the plastic film material, eliminating the need for the traditional cylinder-assisted material feeding structure. After both the upper and lower molds 11 have finished feeding the plastic film, the upper and lower trolleys 2 move out of the pressing station and return to the initial receiving position to avoid processing space. Then, the sliding frame 902 of the reinforcing rib feeding device 9 moves horizontally along the slide rail 901 to the top of the mold. The lifting frame 903 drives the mechanical gripper 904 to descend, placing the clamped reinforcing rib on the surface of the plastic film material in the lower mold 11. Finally, the pressing device 10 drives the upper and lower molds 11 to close. With the help of the filler 6 and the mold cavity 13, the tray cavity is filled and shaped, so that the plastic film material and the reinforcing rib are pressed together. After the mold is opened, the finished product is taken out, thus completing one complete production cycle.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A staggered feeding trolley device for plastic pallet production, used to convey plastic film raw materials to a plastic pallet pressing device (10), characterized in that, It also includes a double-layer conveyor (1); The double-layer conveyor frame (1) is set on one side of the pressing equipment (10), and an upper trolley (4) and a lower trolley (2) are slidably arranged on the double-layer conveyor frame (1). The upper trolley (4) is equipped with a bracket (5) for feeding the upper mold of the pressing equipment (10), and the lower trolley (2) is equipped with a conveyor belt (3) for feeding the lower mold of the pressing equipment (10). The bracket (5) is cantilevered on the upper trolley (4) facing the pressing equipment (10), and the conveyor belt (3) is cantilevered on the lower trolley (2) facing the pressing equipment (10).

2. The staggered feeding trolley equipment for plastic pallet production according to claim 1, characterized in that, The bracket (5) is provided with a filler (6) on its surface.

3. The staggered feeding trolley equipment for plastic pallet production according to claim 1, characterized in that, The double-layer conveyor frame (1) includes an upper rail (102) and a lower rail (101), and the upper trolley (4) and the lower trolley (2) are respectively servo-slidably mounted on the upper rail (102) and the lower rail (101).

4. The staggered feeding trolley equipment for plastic pallet production according to claim 1, characterized in that, Two sets of extrusion equipment (7) are provided on one side of the double-layer conveyor frame (1), and a reinforcing rib feeding device (9) is placed on the same side of the pressing equipment (10) as the extrusion equipment (7).

5. The staggered feeding trolley equipment for plastic pallet production according to claim 4, characterized in that, Both sets of extrusion equipment (7) are provided with discharge ends (8), and the two discharge ends (8) are respectively located directly above the bracket (5) and the conveyor belt (3).

6. The staggered feeding trolley equipment for plastic pallet production according to claim 1, characterized in that, The pressing device (10) includes a lower mold (11) and an upper mold (12), wherein the upper mold (12) is provided with a mold cavity (13) that cooperates with the filler (6).

7. The staggered feeding trolley equipment for plastic pallet production according to claim 4, characterized in that, The reinforcing rib feeding device (9) includes a slide rail (901) and a sliding frame (902) slidably disposed on the slide rail (901). A lifting frame (903) is provided at the bottom of the sliding frame (902), and a mechanical gripper (904) for clamping and preventing the reinforcing rib is provided at the bottom of the lifting frame (903).

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