Plastic tray compression molding machine with removable edge

Abstract

The utility model relates to the field of plastic product production especially relates to a plastic tray compression molding machine with remaining edge removal function. A plastic tray compression molding machine with remaining edge removal function, including base, the base is fixedly connected with stand, is equipped with machine top between the top of stand, is equipped with two hydraulic cylinders on machine top, is connected with moving plate between the telescopic end of two hydraulic cylinders, moving plate and stand sleeve connection, the bottom of moving plate is fixedly connected with upper die, the base is fixedly connected with fixed plate, the fixed plate is fixedly connected with bottom die, is equipped with protruding piece on bottom die, is opened in the upper die and is equipped with the gap corresponding with protruding piece, is opened in the bottom die and is equipped with frame groove, the base is fixedly connected with air cylinder. After the plastic tray is pressed and formed, the shearing frame is controlled to move upward and generate shearing force with the edge of the upper die, the edge of the plastic tray is sheared off, the effect that the remaining edge is cut off is achieved, the plastic tray does not need to be trimmed again, and the production efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing, and in particular to a plastic pallet compression molding machine that can remove excess edges. Background Technology

[0002] In logistics, transportation, and warehousing management, plastic pallets, as standardized load-bearing containers, have seen a year-on-year increase in market demand due to their advantages such as wear resistance, corrosion resistance, and recyclability. Currently, plastic pallets are mainly produced through compression molding. Traditional compression molding machines employ a process of mold closure, raw material injection, pressure holding and cooling, and mold opening and part removal. Because the molten plastic is prone to overflow during the filling process of the mold cavity, uneven thickness edges are formed on the edges of the molded pallets. This not only affects the consistency of the product's appearance but also requires additional labor or specialized cutting equipment for secondary processing. Therefore, to solve the above pain points, this utility model proposes a plastic pallet compression molding machine that can remove excess edges. Utility Model Content

[0003] To overcome the shortcomings, the technical problem of this utility model is to provide a plastic pallet compression molding machine that can remove excess edges.

[0004] A plastic pallet compression molding machine with edge removal capability includes a base, columns fixedly connected to the base, a machine top between the tops of the columns, two hydraulic cylinders on the machine top, a movable plate connected between the telescopic ends of the two hydraulic cylinders, the movable plate sleeved with the columns, an upper mold fixedly connected to the bottom of the movable plate, a fixed plate fixedly connected to the base, a bottom mold fixedly connected to the fixed plate, a protrusion on the bottom mold, a notch corresponding to the protrusion on the upper mold, a frame groove on the bottom mold, a cylinder fixedly connected to the base, a connecting frame fixedly connected to the telescopic end of the cylinder, a shearing frame fixedly connected to the connecting frame, and a sliding connection between the shearing frame and the bottom mold.

[0005] Furthermore, the bottom of the mold is fixedly connected to an insert, and the inside of the mold is provided with a cold-cutting tube. The cooling tube is fixedly connected to the bottom mold through the insert for rapid cooling of the pressed tray.

[0006] Furthermore, the cooling pipe has a U-shaped structure and is equipped with an outlet and an inlet to increase the contact area and achieve faster cooling.

[0007] Furthermore, the top of the shearing frame is flush with the bottom of the groove of the bottom mold, and the inner edge of the shearing frame is on the same vertical line as the outer edge of the upper mold, which is used to remove the excess edge by shearing when removing the excess edge.

[0008] Furthermore, the bottom mold has a flow channel to ensure that the plastic raw material is evenly distributed.

[0009] Furthermore, the shearing frame is located within the groove of the bottom mold, and the shearing frame is provided with bends for offset from the protrusions.

[0010] Compared with the prior art, this utility model has the following advantages: The utility model achieves the following effects: 1. By setting up cooling pipes and liquid flow, the pressed plastic trays can be quickly formed, improving production efficiency.

[0011] 2. After the plastic pallet is pressed and formed, the shearing frame is controlled to move upward and generate shearing force with the edge of the upper mold to cut off the edge of the plastic pallet, thus achieving the effect of cutting off the excess edge. This eliminates the need for further trimming of the plastic pallet and further improves production efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the upper mold of this utility model.

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the bottom mold of this utility model.

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the bottom mold of this utility model.

[0016] Figure 5 This is a three-dimensional structural diagram of the cooling pipe of this utility model.

[0017] Figure 6 This is a three-dimensional structural diagram of the shearing frame of this utility model.

[0018] In the above attached diagram: 1: base, 2: column, 3: machine top, 4: hydraulic cylinder, 5: moving plate, 6: upper mold, 60: notch, 7: fixed plate, 8: bottom mold, 80: protrusion, 81: frame groove, 83: insert, 9: cylinder, 10: connecting frame, 11: shearing frame, 12: cooling pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0020] Example: A plastic pallet compression molding machine capable of removing excess edges, such as... Figures 1-6As shown, the system includes a base 1, on which a column 2 is fixedly connected. A machine top 3 is located between the tops of the columns 2. Two hydraulic cylinders 4 are mounted on the machine top 3. A movable plate 5 is connected between the telescopic ends of the two hydraulic cylinders 4. The movable plate 5 is sleeved with the column 2. An upper mold 6 is fixedly connected to the bottom of the movable plate 5. A fixed plate 7 is fixedly connected to the base 1. A bottom mold 8 is fixedly connected to the fixed plate 7. The bottom mold 8 has a guide groove to ensure uniform distribution of the plastic raw material. The bottom mold 8 has a protrusion 80. The upper mold 6 has a notch 60 corresponding to the protrusion 80. The bottom mold 8 has a support groove 81. A cylinder 9 is fixedly connected to the base 1. A connecting frame 10 is fixedly connected to the telescopic end of cylinder 9, and a shearing frame 11 is fixedly connected to the connecting frame 10. The shearing frame 11 is slidably connected to the bottom mold 8. The top of the shearing frame 11 is flush with the bottom of the groove of the bottom mold 8, and the inner edge of the shearing frame 11 is on the same vertical line as the outer edge of the upper mold 6. The shearing frame 11 is located in the frame groove 81 of the bottom mold 8, and the shearing frame 11 is provided with a bend for being offset from the protrusion 80. The telescopic end of cylinder 9 extends upward and drives the shearing frame 11 to move upward. While the shearing frame 11 moves upward, it will generate a shearing force with the edge of the upper mold 6 to cut off the edge of the plastic tray.

[0021] The bottom of the bottom mold 8 is fixedly connected to an insert 83. The bottom mold 8 is provided with a cold cutting tube. The cooling tube 12 is fixedly connected to the bottom mold 8 through the insert 83 for quickly cooling the pressed tray. The cooling tube 12 has a U-shaped structure and is provided with an outlet and an inlet to increase the contact area and cool faster.

[0022] Working principle: Initially, the cooling pipe 12 is connected to a water source. When pressing the plastic tray, the molten plastic raw material is first placed on the bottom mold 8. Then, the extension rod of the hydraulic cylinder 4 is extended, and the moving plate 5 drives the upper mold 6 to close downwards. At the same time as the mold closes, the upper mold 6 back-presses the raw material, so that the raw material is evenly distributed in the bottom mold 8 under the action of the guide groove. After the mold closes, the pressure is maintained. At the same time, the water in the cooling pipe 12 flows away the heat, so that the pressed plastic tray solidifies quickly. After cooling for a period of time, the extension end of the cylinder 9 is extended upwards, driving the shearing frame 11 to move upwards. At the same time as the shearing frame 11 moves upwards, it will generate shearing force with the edge of the upper mold 6, cutting off the edge of the plastic tray. After the excess edge is cut off, the shearing frame 11 resets. Then, the upper mold 6 is reset, and the operator can take out the pressed tray and excess edge separately.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A plastic pallet compression molding machine capable of removing excess edges, characterized in that: It includes a base (1), a column (2) fixedly connected to the base (1), a machine top (3) between the tops of the column (2), two hydraulic cylinders (4) on the machine top (3), a movable plate (5) connected between the telescopic ends of the two hydraulic cylinders (4), the movable plate (5) sleeved with the column (2), an upper mold (6) fixedly connected to the bottom of the movable plate (5), a fixed plate (7) fixedly connected to the base (1), a bottom mold (8) fixedly connected to the fixed plate (7), a protrusion (80) provided on the bottom mold (8), a notch (60) corresponding to the protrusion (80) opened on the upper mold (6), a frame groove (81) opened on the bottom mold (8), a cylinder (9) fixedly connected to the base (1), a connecting frame (10) fixedly connected to the telescopic end of the cylinder (9), a shearing frame (11) fixedly connected to the connecting frame (10), and a sliding connection between the shearing frame (11) and the bottom mold (8).

2. A plastic pallet compression molding machine capable of removing excess edges according to claim 1, characterized in that: The bottom of the bottom mold (8) is fixedly connected to an insert (83), and the inside of the bottom mold (8) is provided with a cold cutting tube. The cooling tube (12) is fixedly connected to the bottom mold (8) through the insert (83) for quickly cooling the pressed tray.

3. A plastic pallet compression molding machine capable of removing excess edges according to claim 2, characterized in that: The cooling pipe (12) has a U-shaped structure and is provided with an outlet and an inlet to increase the contact area and cool faster.

4. A plastic pallet compression molding machine capable of removing excess edges according to claim 3, characterized in that: The top of the shearing frame (11) is flush with the bottom of the groove of the bottom mold (8), and the inner edge of the shearing frame (11) is on the same vertical line as the outer edge of the upper mold (6), which is used to remove the excess edge by shearing when removing the excess edge.

5. A plastic pallet compression molding machine capable of removing excess edges according to claim 4, characterized in that: The bottom mold (8) has a guide groove to ensure that the plastic raw material is evenly distributed.

6. A plastic pallet compression molding machine capable of removing excess edges according to claim 5, characterized in that: The shearing frame (11) is located in the frame groove (81) of the bottom mold (8), and the shearing frame (11) is provided with a bend for being offset from the protrusion (80).

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