Vacuum curing device for plastic plates

Abstract

The utility model relates to the technical field of vacuum curing, in particular to a plastic plate vacuum curing device. The device comprises a curing box, a placing assembly and a limiting mechanism, a sealing door is hinged to the curing box, an evacuation pump is arranged on the top of the curing box, a refrigerator used for cooling and curing hot-melt plastic is arranged on the inner top wall of the curing box, and the placing assembly used for placing and bearing a plastic hot-melt liquid extrusion mold is arranged in the curing box and located below the refrigerator. And the placing assembly is provided with a limiting mechanism for limiting the plastic extrusion molds with different sizes. According to the device, the rotatable placing frame is arranged, workpieces to be cooled and solidified are placed on the placing frame, the solidification uniformity of the multiple workpieces is improved, the limiting mechanism and the delimiting trigger piece are arranged on the placing frame, under the cooperation of the limiting mechanism and the delimiting trigger piece, the stability of the multiple workpieces to be solidified in the position switching process is further guaranteed, materials are convenient to change, and the work efficiency is improved. And the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum curing, in particular to a vacuum curing device for plastic sheets. Background Art

[0002] Acrylic plastic sheets are a common plastic material, which are widely used in billboards, display racks, furniture, architectural decoration and other fields. They are widely welcomed because of their easy processing, good weather resistance, rich colors and other characteristics. Their production is first by heating plastic raw materials to a molten state, then using an extruder to extrude the molten plastic into a plate-shaped mold, and finally using a curing device to quickly cure and cool it to maintain its shape and size stability.

[0003] Existing curing devices usually have a placement rack for placing molds inside, stacking the molds layer by layer on the placement rack, and using the cold source inside the curing device to cool the hot melt liquid in the hot melt mold.

[0004] However, in the curing process of the above-mentioned curing device, since the position of the mold is fixed, the hot melt liquid inside the mold relatively close to the cold source cures faster, and the hot melt liquid in the mold far from the cold source cures slower, resulting in poor overall curing uniformity and affecting the curing efficiency. Summary of the Utility Model

[0005] Aiming at the problems existing in the background art, a vacuum curing device for plastic sheets is proposed. A rotatable placement rack is arranged in the curing box, and the workpiece to be cooled and cured is placed on the placement rack, which improves the curing uniformity of multiple workpieces. And a limiting mechanism and a limit release trigger are arranged on the placement rack. With the cooperation of the two, the stability of multiple workpieces to be cured when switching positions is further ensured, and the material replacement is convenient, improving the convenience of operation.

[0006] The utility model proposes a vacuum curing device for plastic sheets, including

[0007] A curing box, which is hinged with a sealing door, is provided with a vacuum pump at the top, and a refrigerator for cooling and curing hot melt plastic is arranged on the inner top wall thereof;

[0008] A placement assembly, which is arranged below the refrigerator in the curing box and is used for placing an extrusion mold carrying plastic hot melt liquid; and

[0009] A limiting mechanism, which is arranged on the placement assembly and is used for limiting plastic extrusion molds of different sizes, and has a limit release trigger for releasing the limit on the cured plastic extrusion mold.

[0010] Preferably, the placement assembly includes a reduction motor, a rotating shaft, a connecting ring, a connecting support rod, a rotating rod and a placement frame. The reduction motor is installed on the outside of the curing box, and its output end is connected to the rotating shaft located in the curing box. The connecting ring is symmetrically arranged on the rotating shaft, and the outer wall of the connecting ring is equidistantly arranged with several groups of connecting support rods on the outer circumference. Rotating rods are rotatably arranged on opposite sides of the connecting support rods, and the placement frame is connected between the corresponding two rotating rods.

[0011] Preferably, the rotating rod is arranged as a Z-shaped structure, the end of the upper horizontal section thereof is rotationally connected to the side of the connecting support rod, and the end of the lower horizontal section thereof is connected to the placement frame.

[0012] Preferably, the limiting mechanism includes a compression spring, a limiting pressure plate and a guide member. Two groups of limiting pressure plates are provided, and both are symmetrically slidably arranged in the placement rack through the guide member. The two groups of limiting pressure plates are connected to compression springs on the sides facing away from each other, and one end of the compression spring is connected to the inner wall of the placement rack.

[0013] Preferably, the guide member includes a strip hole, a guide column and a slider. The bottom of the placement rack is provided with a strip hole, the guide column is horizontally arranged in the strip hole, and two groups of sliders are slidably arranged thereon, and the two groups of sliders are respectively connected to the two groups of limiting pressure plates.

[0014] Preferably, the release trigger includes a fixed frame, a connecting shaft, a connecting disk, a strip plate and a wristband. The fixed frame is installed at the bottom of the placement frame, and a connecting shaft is rotatably passed through the fixed frame. A wristband is provided at the bottom of the connecting shaft, and a connecting disk is provided at the top of the connecting shaft. The two symmetrical eccentric parts of the connecting disk are respectively rotatably connected to strip plates between the two sliders.

[0015] Through the above technical scheme, that is, the curing device disclosed in the utility model, a rotatable placement rack is arranged through the cooperation of a reduction motor, a rotating shaft, a connecting ring, a connecting support rod and a rotating rod, and the workpiece to be cooled and cured is placed on the placement rack, thereby improving the uniformity of curing of multiple workpieces. At the same time, the placement rack always keeps the center of gravity down during the process of rotating and switching positions, and a limit mechanism and a release trigger member are arranged on the placement rack. With the cooperation of the two, the stability of multiple workpieces to be cured when switching positions is further guaranteed, and material replacement is convenient, thereby improving the convenience of operation.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a vacuum curing device for plastic sheets of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the curing box;

[0019] Figure 3 is Figure 2 a partial structural schematic diagram of the placement component;

[0020] Figure 4 is Figure 3 a structural schematic diagram of the bottom of the placement rack.

[0021] Reference numerals: 1, curing box; 2, sealing door; 3, evacuation pump; 4, cooler; 5, reduction motor; 6, rotating shaft; 7, connecting ring; 8, connecting support rod; 9, rotating rod; 10, placement rack; 11, compression spring; 12, limiting pressing plate; 13, strip-shaped hole; 14, guide post; 15, slider; 16, fixing bracket; 17, connecting shaft; 18, connecting disc; 19, strip-shaped plate; 20, bracelet. Detailed implementation manners

[0022] The following will explain in detail the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and interpreting the present disclosure, and are not used to limit the present disclosure.

[0023] Embodiment 1

[0024] As Figures 1-4 shown, a plastic sheet vacuum curing device proposed by the present utility model includes a curing box 1, a placement component and a limiting mechanism. A sealing door 2 is hinged on the curing box 1, an evacuation pump 3 is arranged on its top, and a cooler 4 for cooling and curing the hot-melt plastic is arranged on its inner top wall. A placement component for placing a plastic hot-melt liquid extrusion mold is arranged below the cooler 4 in the curing box 1. The placement component is provided with a limiting mechanism for limiting plastic extrusion molds of different sizes. The limiting mechanism has a limit release trigger for releasing the limit on the cured plastic extrusion mold.

[0025] Among them, the evacuation pump 3 is used to evacuate the inside of the curing box 1 into a vacuum state, thereby accelerating the curing efficiency.

[0026] As Figure 1 and Figure 3 shown, the placement component includes a reduction motor 5, a rotating shaft 6, a connecting ring 7, connecting support rods 8, rotating rods 9 and a placement rack 10. The reduction motor 5 is installed outside the curing box 1, and its output end is connected to a rotating shaft 6 located inside the curing box 1. Connecting rings 7 are symmetrically arranged on the rotating shaft 6. A plurality of groups of connecting support rods 8 are arranged on the outer wall of the connecting ring 7 at equal intervals along the outer circumference. Rotating rods 9 are rotatably arranged on the opposite sides of the connecting support rods 8, and a placement rack 10 is connected between the corresponding two rotating rods 9.

[0027] As Figure 3As shown, the rotating rod 9 is arranged as a Z-shaped structure, the end of the upper horizontal section thereof is rotatably connected to the side of the connecting support rod 8, and the end of the lower horizontal section thereof is connected to the placement rack 10.

[0028] The shaft 6 is driven to rotate by the reduction motor 5. During the rotation of the shaft 6, the connecting rod 8 is driven to rotate synchronously. During the rotation, the connecting rod 8 drives the multiple placement racks 10 to switch positions through the rotating rod 9, thereby improving the overall curing uniformity.

[0029] Embodiment 2

[0030] like Figures 1-4 As shown, the utility model proposes a plastic plate vacuum curing device. Based on the above embodiments, this embodiment records in detail the specific structure of the limiting mechanism and its specific limiting method.

[0031] like Figure 3 As shown, the limiting mechanism includes a compression spring 11, a limiting pressure plate 12 and a guide member. Two groups of limiting pressure plates 12 are provided, and both are symmetrically slidably arranged in the placement rack 10 through the guide member. The two groups of limiting pressure plates 12 are connected to the sides facing away from each other with compression springs 11. One end of the compression spring 11 is connected to the inner wall of the placement rack 10. The compression spring 11 drives the limiting pressure plate 12 to apply elastic extrusion force to the two ends of the extrusion mold, thereby limiting it to the inner side of the placement rack 10, thereby improving the stability of its switching position.

[0032] like Figure 4 As shown, the guide member includes a strip hole 13, a guide column 14 and a slider 15. A strip hole 13 is opened at the bottom of the placement rack 10. The guide column 14 is horizontally arranged in the strip hole 13, and two groups of sliders 15 are slidably arranged thereon. The two groups of sliders 15 are respectively connected to the two groups of limiting pressure plates 12. Through the cooperation of the slider 15 and the guide column 14, the moving trajectory of the limiting pressure plate 12 is limited.

[0033] like Figure 4 As shown, the release trigger includes a fixed frame 16, a connecting shaft 17, a connecting disk 18, a strip plate 19 and a wristband 20. The fixed frame 16 is installed at the bottom of the placement frame 10, and a connecting shaft 17 is rotatably passed through it. The bottom end of the connecting shaft 17 is provided with a wristband 20, and the top end of the connecting shaft 17 is provided with a connecting disk 18. The two symmetrical eccentric parts of the connecting disk 18 are respectively rotatably connected to the strip plates 19 between the two sliders 15.

[0034] The connecting shaft 17 can be subjected to a rotational force by holding the hand ring 20, thereby driving the connecting disk 18 thereon to rotate synchronously.

[0035] In summary, when the utility model is in use, the curing box 1 is opened through the sealing door 2, and the mold carrying the hot-melt liquid to be cured is placed on the placement rack 10. Before placing, it is necessary to hold the bracelet 20 by hand and apply a rotational force to the connecting shaft 17. The connecting shaft 17 drives the connecting disk 18 to rotate. During the rotation of the connecting disk 18, the two rotation connection points between it and the strip plate 19 are driven to be horizontally symmetrical, that is, the two limiting pressing plates 12 are driven to move synchronously and in opposite directions. At this time, the distance between the two limiting pressing plates 12 becomes larger. Then, the mold is placed on the placement rack 10 between the two limiting pressing plates 12. The rotational force applied to the bracelet 20 is released, and under the action of the compression spring 11, the two limiting pressing plates 12 are driven to approach synchronously to limit the mold. Then, the sealing door 2 is closed, and the evacuation pump 3, the reduction motor 5, and the cooler 4 are started to cure the hot-melt raw material. During the curing process, the reduction motor 5 drives the rotating shaft 6 to rotate. During the rotation of the rotating shaft 6, the connecting support rod 8 is driven to rotate synchronously. During the rotation process, the connecting support rod 8 drives a plurality of placement racks 10 to switch positions through the rotating rod 9, so as to improve the overall curing uniformity.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited thereto. Various changes can be made without departing from the spirit of the present utility model within the scope of knowledge possessed by those skilled in the art to which it belongs.

Claims

1. A vacuum curing device for plastic sheets, characterized in that, include A curing box (1) is hingedly provided with a sealed door (2), a vacuum pump (3) is arranged on the top, and a refrigerator (4) is arranged on the inner top wall for cooling and curing the hot melt plastic; A placement component is arranged in the curing box (1) below the refrigerator (4), and is used to place an extrusion die carrying a plastic hot melt liquid; as well as The limiting mechanism is arranged on the placement component and is used for limiting the plastic extrusion dies of different sizes. The limiting mechanism has a limit release triggering member and is used for releasing the limit of the cured plastic extrusion dies.

2. The vacuum curing device for plastic sheets according to claim 1, wherein The placement assembly comprises a reduction motor (5), a rotating shaft (6), a connecting ring (7), a connecting support rod (8), a rotating rod (9) and a placement frame (10). The reduction motor (5) is installed outside the curing box (1), and its output end is connected to the rotating shaft (6) located in the curing box (1). The connecting ring (7) is symmetrically arranged on the rotating shaft (6). The outer wall of the connecting ring (7) is equidistantly arranged with a plurality of groups of connecting support rods (8) on the outer circumference. The opposite side of the connecting support rod (8) is rotatably arranged with a rotating rod (9), and the placement frame (10) is connected between two corresponding rotating rods (9).

3. The vacuum curing device for plastic sheets according to claim 2, wherein, The rotating rod (9) is arranged in a Z-shaped structure, the end of the upper horizontal section of which is rotatably connected to the side of the connecting support rod (8), and the end of the lower horizontal section of which is connected to the placement frame (10).

4. A plastic sheet vacuum curing device according to claim 2, wherein, The limiting mechanism comprises a compression spring (11), a limiting pressure plate (12) and a guide member. Two groups of limiting pressure plates (12) are provided, and both are symmetrically slidably arranged in the placement rack (10) through the guide member. The two groups of limiting pressure plates (12) are connected to the compression spring (11) on the sides facing away from each other, and one end of the compression spring (11) is connected to the inner wall of the placement rack (10).

5. A plastic sheet vacuum curing device according to claim 4, characterized in that, The guide member comprises a strip hole (13), a guide column (14) and a slider (15). The bottom of the placement rack (10) is provided with a strip hole (13). The guide column (14) is transversely arranged in the strip hole (13). Two groups of sliders (15) are slidably arranged on the guide column. The two groups of sliders (15) are respectively connected to the two groups of limit pressure plates (12).

6. A vacuum curing device for plastic sheets according to claim 5, characterized in that, The release trigger component comprises a fixing frame (16), a connecting shaft (17), a connecting disk (18), a strip plate (19) and a hand ring (20). The fixing frame (16) is installed at the bottom of the placement frame (10), and a connecting shaft (17) is rotatably passed through the fixing frame (16). The bottom end of the connecting shaft (17) is provided with a hand ring (20), and the top end of the connecting shaft (17) is provided with a connecting disk (18). Two symmetrical eccentric parts of the connecting disk (18) are respectively rotatably connected to the strip plates (19) between the two sliders (15).

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