Foaming platform for refrigerator van plate

Abstract

The utility model discloses a refrigerator van plate foaming platform, which relates to the technical field of van plate foaming, and comprises a bottom frame, a top frame positioned above the bottom frame, a top die lifting on the lower side of the top frame, and a bottom die placed on the upper side of the bottom frame, a plurality of rotating shafts are rotatably mounted on the underframe in parallel, and overturning rollers are rotatably mounted on the upper sides of the rotating shafts; a pull rod is arranged on the lower side of the underframe; a plurality of parallel connecting rods are connected between the pull rod and each rotating shaft; a first oil cylinder for driving the pull rod to move is mounted at one end of the underframe; the first oil cylinder enables the pull rod to move, the pull rod enables the rotating shaft to rotate through the connecting rod, then the overturning idler wheel can be overturned, the overturning idler wheel can be hidden below the upper side face of the bottom frame and can protrude out of the upper side face of the bottom frame, and the foaming supporting stability and the moving convenience are both considered.

Description

Technical Field

[0001] This utility model relates to the field of foamed truck body panels, and in particular to a foamed truck body panel platform for refrigerated trucks. Background Technology

[0002] Refrigerated truck body panels require the use of foamed insulation materials. These materials, often large in size and requiring large foaming platforms, result in high costs. For example, patent CN112549417B describes a long, irregularly shaped underframe integral foaming system and method. In this foaming platform, the bottom mold supports and bears the panel material, working in conjunction with a liftable top mold to clamp and maintain pressure on the assembled panel material. Therefore, the bottom mold's underside needs to be flat and stable. Since the bottom mold needs to pass under the top mold before and after foaming, its large size and the need for a flat underside make movement difficult. Utility Model Content

[0003] The purpose of this utility model is to provide a refrigerated truck body foaming platform in order to solve at least one of the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A refrigerated truck body foaming platform includes a base frame, a top frame located above the base frame, a top mold that rises and falls below the top frame, and a bottom mold placed on the top frame. Several rotating shafts are rotatably mounted on the base frame, and tilting rollers are rotatably mounted on the upper side of the rotating shafts. A tie rod is provided on the lower side of the base frame, and several parallel connecting rods are connected between the tie rod and each rotating shaft. A first hydraulic cylinder that drives the tie rod to move is installed at one end of the base frame.

[0006] Furthermore, several columns are connected between the two sides of the base frame and the top frame, and the edge of the top mold slides vertically along the inner side of the columns.

[0007] Furthermore, the base frame is provided with side frames on both outer sides, and several fixed rollers are rotatably mounted on the upper side of the side frames.

[0008] Furthermore, a number of horizontally rotating guide wheels are rotatably mounted on the upper side of the base frame, and the guide wheels are located on both sides of the bottom mold.

[0009] Furthermore, the base frame is provided with several rotating supports and several second hydraulic cylinders on both sides; the rotating supports and the second hydraulic cylinders are rotatably connected to the base frame.

[0010] Furthermore, racks are provided on both sides of the bottom mold, and a gear that meshes with the racks and a first motor that drives the gear to rotate are provided on the base frame.

[0011] Furthermore, the top frame is equipped with several worm gear screw jacks, the lower ends of which are connected to the top mold.

[0012] Furthermore, a second motor is provided on the upper side of the top frame to drive the worm gear screw jack.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses a first hydraulic cylinder to move a pull rod, which in turn rotates a shaft via a connecting rod, thereby causing the flipping roller to flip. The flipping roller can be either hidden below the side of the base frame or protrude from the side of the base frame, thus balancing the stability of the foam support with the ease of movement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main frame structure of this utility model.

[0016] Figure 2 for Figure 1 Enlarged view of a portion of the diagram.

[0017] Figure 3 This is a three-dimensional structural diagram of the base frame of this utility model from the lower side.

[0018] Figure 4 This is a schematic diagram of the middle side view structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the connection of the first hydraulic cylinder of this utility model.

[0020] Figure 6 This is a schematic diagram of the base frame support and bottom mold drive of this utility model.

[0021] Figure 7 This is a top view of the bottom mold and base frame of this utility model.

[0022] Figure 8 This is a schematic diagram of the top mold drive of this utility model.

[0023] Figure 9 This is a schematic diagram of the side frame of this utility model.

[0024] Figure 10 This is a schematic diagram of the top mold guide of this utility model.

[0025] In the diagram: 1. Base frame; 2. Top frame; 3. Column; 4. Top mold; 5. Bottom mold; 6. Rotating shaft; 7. Tilting roller; 8. Tie rod; 9. Connecting rod; 10. First hydraulic cylinder; 11. Hydraulic cylinder frame; 12. Side frame; 13. Fixed roller; 14. Guide wheel; 15. Rotating support; 16. Second hydraulic cylinder; 17. Rack; 18. Gear; 19. First motor; 20. Worm gear screw jack; 21. Connecting shaft; 22. Second motor; 23. Reducer; 24. Guide rail; 25. Slider. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] Specific embodiments of the refrigerated truck body foaming platform provided by this utility model:

[0028] Please see Figure 1-10 The refrigerated truck body foaming platform includes a base frame 1, a top frame 2 located above the base frame 1, a top mold 4 that rises and falls below the top frame 2, and a bottom mold 5 placed on the top of the base frame 1.

[0029] Several columns 3 are connected between the two sides of the base frame 1 and the top frame 2. In this embodiment, there are six columns 3, which are symmetrically connected to the two sides of the base frame 1 and the top frame 2, with three columns on each side.

[0030] The edge of the top mold 4 slides vertically along the inner side of the column 3. The inner side of the column 3 is provided with guide rails 24, and the edge of the top mold 4 is provided with six sliders 25 that are vertically connected to the guide rails 24. Through the cooperation of the guide rails 24 and the sliders 25, the top mold 4 can be stably raised and lowered vertically and kept in a horizontal state.

[0031] In this embodiment, the base frame 1, top frame 2, top mold 4, and bottom mold 5 all adopt a grid-like frame structure. In other embodiments, the top frame 2 and top mold 4 may adopt a plate-like structure. In some embodiments, the base frame 1, top frame 2, top mold 4, and bottom mold 5 are made of aluminum alloy; in other embodiments, plywood or fiberglass is used, which can significantly reduce cost.

[0032] A frame-shaped wooden template is set on the upper side of the bottom mold 5 to limit the perimeter of the panel material. The panel consists of three layers of material: an outer skin, an inner skin, and an inner skeleton. The inner skeleton is located between the outer skin and the inner skin. During foaming, foaming material is filled between the outer skin and the inner skin. The top mold 4 descends and cooperates with the bottom mold 5 to pressurize and shape the panel material.

[0033] In order to drive the top mold 4 to rise and fall, in this embodiment, the top frame 2 is provided with a plurality of worm gear screw jacks 20, the lower end of the worm gear screw jacks 20 being connected to the top mold 4; a second motor 22 for driving the worm gear screw jacks 20 to move is provided on the upper side of the top frame 2.

[0034] In this embodiment, there is one second motor 22, which is installed on the upper side of the middle part of the top frame 2. The second motor 22 is connected to a commutator, which is connected to two reducers 23 and drives the reducers 23 to operate. Two rows of worm gear screw jacks 20 are arranged. The worm gear screw jacks 20 in the same row are connected by a connecting shaft 21 and a coupling to achieve synchronous operation. The two reducers 23 drive the two rows of worm gear screw jacks 20 to operate synchronously, thereby realizing the lifting and lowering drive of the top mold 4.

[0035] Several horizontally rotating guide wheels 14 are rotatably mounted on the upper side of the base frame 1. The axis of the guide wheels 14 is vertical, and two rows of guide wheels 14 are arranged. The two rows of guide wheels 14 are located on the upper sides of the two edges of the base frame 1, and on both sides of the bottom mold 5. When the bottom mold 5 moves past the upper side of the base frame 1, the guide wheels 14 provide horizontal lateral restraint for the bottom mold 5 to ensure accurate positioning. The height of the guide wheels 14 is lower than the thickness of the bottom mold 5.

[0036] Several rotating shafts 6 are rotatably mounted on the base frame 1, with the extension direction of the rotating shafts 6 perpendicular to the movement direction of the bottom mold 5. Support bearings for the rotation of the rotating shafts 6 are provided at both ends of the rotating shafts 6, and the support bearings are installed on the inner side of the grid-like frame structure base frame 1. Four tilting rollers 7 are rotatably mounted on the upper side of each rotating shaft 6, with the axis of the tilting rollers 7 parallel to the axis of the rotating shaft 6.

[0037] A tie rod 8 is provided on the lower side of the base frame 1. Several parallel connecting rods 9 connect the tie rod 8 to each rotating shaft 6. The upper end of the connecting rod 9 is connected to the lower middle part of the rotating shaft 6, and the lower end of the connecting rod 9 is hinged to the tie rod 8. The number of connecting rods 9 and rotating shafts 6 are the same and correspond one-to-one. A first hydraulic cylinder 10 is installed at one end of the base frame 1 to drive the tie rod 8 to move. The extension and retraction of the extension end of the first hydraulic cylinder 10 causes the tie rod 8 to move. The movement of the tie rod 8 causes all rotating shafts 6 to rotate through the connecting rods 9, thereby causing the tilting roller 7 on the upper side of the rotating shaft 6 to tilt. When the connecting rod 9 is vertical, the tilting roller 7 is located directly above the rotating shaft 6. The tilting roller 7 protrudes slightly from the upper side of the base frame 1, replacing the base frame 1 in supporting the bottom mold 5. At this time, the bottom mold 5 can move easily with little resistance. When the pull rod 8 moves, all the connecting rods 9 tilt, so that the flipping roller 7 does not protrude from the upper side of the base frame 1. At this time, the foaming operation is carried out. The upper side of the base frame 1 supports the bottom mold 5, and the top mold 4 descends to pressurize the panel material, ensuring the stability of the support for the bottom mold 5.

[0038] In this embodiment, all connecting rods 9 are of the same length, and all rotating shafts 6 are of the same height, forming a parallelogram mechanism with the tie rod 8, connecting rods 9, and base frame 1. The tie rod 8 remains parallel to the base frame 1 throughout its movement. A cylinder frame 11 is connected to one end of the base frame 1, and the end of the cylinder frame 11 furthest from the base frame 1 is hinged to the first cylinder 10. The telescopic end of the first cylinder 10 is hinged to one end of the tie rod 8. The angle of the first cylinder 10 changes during the movement of the tie rod 8.

[0039] Because the bottom mold 5 is relatively long, in this embodiment, side frames 12 are provided on the outer sides of both ends of the base frame 1. The side frames 12 are grid-like frames, and several fixed rollers 13 are rotatably mounted on the upper side of the side frames 12. The upper end of the fixed rollers 13 is at the same height as the upper end of the flipping rollers 7 when they are at their highest position. When the bottom mold 5 passes through the upper side of the base frame 1, the side frames 12 and the fixed rollers 13 assist in supporting the bottom mold 5. The fixed rollers 13 only rotate on the side frames 12 and their positions on the side frames 12 cannot be changed.

[0040] The bottom mold 5 has racks 17 on both sides, and the base frame 1 is equipped with gears 18 that mesh with the racks 17 and a first motor 19 that drives the gears 18 to rotate. In this embodiment, four sets of gears 18 and first motors 19 are arranged symmetrically on both sides of the base frame 1, with two sets on each side; there are two sets of gears 18 and first motors 19 at each end of the base frame 1. All first motors 19 operate synchronously. In this embodiment, the gears 18 are located below the racks 17, and the guide wheels 14 are located outside the racks 17. It should be noted that after the flipping rollers 7 flip and rise, they lift the bottom mold 5 a small distance. This small distance only allows a small gap to be formed between the lower side of the bottom mold 5 and the upper side of the base frame 1, but it does not allow the racks 17 and gears 18 to separate. The gears 18 can still drive the racks 17 and the bottom mold 5 to move. The first motors 19 drive the gears 18 to rotate, and the gears 18, through the racks 17, allow the bottom mold 5 to move smoothly under the support of the flipping rollers 7. In some other embodiments, the gears 18 and the first motor 19 are configured to move vertically up and down as the rotating roller 7 rotates. In other embodiments, several sets of gears 18 and the first motor 19 are also installed on the edge of the side frame 12, so that the bottom mold 5 can also move automatically on the upper side of the side frame 12.

[0041] The base frame 1 has several rotating supports 15 and several second hydraulic cylinders 16 on its two side edges, respectively; both the rotating supports 15 and the second hydraulic cylinders 16 are rotatably connected to the base frame 1. The telescopic end of the second hydraulic cylinder 16 is hinged to the base frame 1, and the lower end of the second hydraulic cylinder 16 is provided with a base, which is hinged to the second hydraulic cylinder 16. In this embodiment, there are three rotating supports 15 and three second hydraulic cylinders 16; the three second hydraulic cylinders 16 operate synchronously. When the telescopic end of the second hydraulic cylinder 16 retracts, the base frame 1 is horizontal; when the telescopic end of the second hydraulic cylinder 16 extends, the base frame 1 rotates around the rotating supports 15 at a certain angle and is tilted. During the foaming process, tilting the base frame 1 is beneficial for the full and uniform distribution of the foaming material. After foaming is completed, the base frame 1 is restored to a horizontal state for pressure holding.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. 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 refrigerated truck body foaming platform, comprising a base frame (1), a top frame (2) located above the base frame (1), a top mold (4) that rises and falls below the top frame (2), and a bottom mold (5) placed on the upper side of the base frame (1); characterized in that, Several rotating shafts (6) are mounted in parallel on the base frame (1), and a rotating roller (7) is mounted on the upper side of the rotating shaft (6); a tie rod (8) is provided on the lower side of the base frame (1), and several parallel connecting rods (9) are connected between the tie rod (8) and each rotating shaft (6); a first oil cylinder (10) is installed at one end of the base frame (1) to drive the tie rod (8) to move.

2. The refrigerated truck body foaming platform according to claim 1, characterized in that, Several columns (3) are connected between the two sides of the base frame (1) and the top frame (2), and the edge of the top mold (4) slides vertically along the inner side of the columns (3).

3. The refrigerated truck body foaming platform according to claim 1, characterized in that, The base frame (1) has side frames (12) on both sides, and several fixed rollers (13) are rotatably installed on the upper side of the side frames (12).

4. The refrigerated truck body foaming platform according to claim 1, characterized in that, The base frame (1) is rotatably mounted with several horizontally rotating guide wheels (14), which are located on both sides of the bottom mold (5).

5. The refrigerated truck body foaming platform according to claim 1, characterized in that, The base frame (1) has several rotating supports (15) and several second oil cylinders (16) on its two sides respectively; the rotating supports (15) and the second oil cylinders (16) are rotatably connected to the base frame (1).

6. The refrigerated truck body foaming platform according to claim 1, characterized in that, The bottom mold (5) is provided with racks (17) on both sides, and the base frame (1) is provided with a gear (18) that meshes with the racks (17) and a first motor (19) that drives the gear (18) to rotate.

7. The refrigerated truck body foaming platform according to claim 1 or 2, characterized in that, The top frame (2) is equipped with several worm gear screw jacks (20), and the lower end of the worm gear screw jacks (20) is connected to the top mold (4).

8. The refrigerated truck body foaming platform according to claim 7, characterized in that, The top frame (2) is equipped with a second motor (22) on the upper side to drive the worm gear screw jack (20).

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