Guide device for plastic plate extruder

Abstract

The utility model relates to the technical field of guiding for plastic plate extruders, in particular to a guiding device for a plastic plate extruder, which comprises two support plates respectively arranged on two sides of a conveying device and arranged along the output direction of the conveying device. A plurality of guide wheels capable of making contact with the side face of the plastic plate are distributed on the supporting plate in the extending length direction. The guiding device body further comprises moving plates which are arranged on the two sides of the conveying device and can be used for supporting the supporting plates, the guiding device body further comprises a rack arranged under the extruder body, and a driving mechanism which can be used for driving the moving plates on the two sides to move synchronously is further arranged between the rack and the moving plates. The guide wheels are arranged on the two sides of the conveying device to guide the plastic plates, and the abrasion phenomenon caused by friction of the side faces of the plastic plates is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of guiding for plastic sheet extruders, and specifically provides a guiding device for plastic sheet extruders. Background Art

[0002] In the production process of plastic sheets, the extruder is an indispensable key device. However, during the production process of existing plastic sheet extruders, they often face many challenges, especially in the guiding and positioning of the sheets. These problems not only affect production efficiency but may also lead to unstable product quality.

[0003] Chinese Patent CN217622091U discloses a guiding device for plastic sheet extruders, which relates to the technical field of plastic sheet guiding. In this guiding device for plastic sheet extruders, two mounting plates are fixedly connected to the upper surface of the support seat, springs are arranged on the inner walls of the two mounting plates, two sliding columns are fixedly connected to the side of the support seat close to the two mounting plates, and two long blocks are movably connected to the ends of the two sliding columns away from the support seat. This patent constrains the plastic sheet to the center position of the conveying device by arranging baffles on both sides of the conveying device and making the baffles contact the side of the plastic sheet.

[0004] In this prior art, by arranging baffles on both sides of the conveying device and making the baffles contact the side of the plastic sheet to constrain the plastic sheet to the center position of the conveying device. However, this traditional guiding method exposes significant limitations in practical applications. Specifically, during the process of high-temperature extrusion and rapid cooling and shaping of the plastic sheet, due to its material properties, large friction forces will inevitably be generated when the sheet edge continuously contacts the rigid baffle. This friction force not only increases the energy consumption of sheet conveying, but more importantly, it will cause physical wear on the edge of the plastic sheet, resulting in defects such as burrs, scratches, and even deformation on the sheet edge. These defects not only affect the appearance quality of the plastic sheet but may also reduce its structural strength and durability, thereby having an adverse impact on subsequent processing or usage performance. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a guiding device for plastic sheet extruders, which guides the plastic sheet by arranging guide wheels on both sides of the conveying device, effectively avoiding the wear phenomenon caused by friction on the side of the plastic sheet.

[0006] To solve the problems of the existing technology, the utility model provides a guiding device for a plastic sheet extruder, which includes a guiding device body on a conveying device at the discharging end of a cooling device arranged on an extruder body. A forming die is also arranged between the discharging end of the extruder body and the cooling device. The guiding device body includes two supporting plates respectively arranged on both sides of the conveying device and arranged along the output direction of the conveying device, and a plurality of guiding wheels capable of contacting the side surface of the plastic sheet are distributed along the length direction of the supporting plate; the guiding device body also includes moving plates arranged on both sides of the conveying device and capable of supporting the supporting plates, the guiding device body also includes a frame arranged directly below the moving plates, and a driving mechanism capable of driving the moving plates on both sides to move synchronously is also arranged between the frame and the moving plates. A sliding rod is arranged on one side of the supporting plate away from the guiding wheel, and the sliding rod can be slidably arranged in the moving plate. A buffer spring is sleeved on the sliding rod, one end of the buffer spring contacts the supporting plate, and the other end of the buffer spring contacts the inner side of the moving plate; preferably, the driving mechanism includes a gear rotatably arranged at the central position of the top of the frame, the driving mechanism also includes two racks respectively arranged at the bottom of the moving plates, and the racks are meshed with the gear. The guiding device body also includes a telescopic driving member fixed on the top of the frame, and the output end of the telescopic driving member is connected to one of the racks, and the telescopic driving member is parallel to the rack.

[0007] Preferably, the driving mechanism includes at least two slide rails arranged on the top of the frame, and two groups of sliders respectively connected to the bottom of the moving plates are slidably arranged on the slide rails.

[0008] Preferably, the cross section of the moving plate presents an "L" shape.

[0009] The beneficial effects of the utility model compared with the existing technology are as follows: by arranging synchronously movable supporting plates on both sides of the conveying device, the guiding of the plastic sheet is realized. Specifically, a plurality of guiding wheels are arranged along the length direction of the supporting plate, and these guiding wheels can contact the side surface of the plastic sheet. During the conveying of the plastic sheet, the guiding wheels can freely rotate under the action of the plastic sheet, thus effectively avoiding the wear phenomenon caused by friction on the side surface of the plastic sheet. In addition, to further improve the stability and safety of the guiding device, a buffer spring is arranged between the supporting plate and the moving plate. When the guiding wheel contacts the side surface of the plastic sheet as it moves, the buffer spring can absorb and disperse the instantaneous extrusion force, preventing the plastic sheet from being damaged by excessive extrusion force. This design not only improves the durability of the guiding device but also ensures the integrity and quality stability of the plastic sheet during the conveying process. Description of the Drawings

[0010] Figure 1 is the first three-dimensional structural schematic diagram of a guiding device for a plastic sheet extruder of the utility model;

[0011] Figure 2 is a second three-dimensional structural schematic diagram of a guiding device for a plastic sheet extruder of the present utility model;

[0012] Figure 3 is a three-dimensional structural schematic diagram of a conveying device and a guiding device body of a guiding device for a plastic sheet extruder of the present utility model;

[0013] Figure 4 is a first three-dimensional structural schematic diagram of a guiding device body of a guiding device for a plastic sheet extruder of the present utility model;

[0014] Figure 5 is a second three-dimensional structural schematic diagram of a guiding device body of a guiding device for a plastic sheet extruder of the present utility model;

[0015] Figure 6 is a structural schematic diagram when a support plate, a guiding wheel, a sliding rod and a buffer spring of a guiding device body of a guiding device for a plastic sheet extruder of the present utility model are assembled.

[0016] The reference numerals in the figure are: 1. extruder body; 11. forming die; 12. cooling device; 2. conveying device; 3. guiding device body; 31. support plate; 311. guiding wheel; 312. sliding rod; 313. buffer spring; 32. moving plate; 33. driving mechanism; 331. slide rail; 3311. slider; 332. rack; 333. telescopic driving member; 334. gear; 34. frame. Specific embodiments

[0017] In order to further understand the features, technical means and the specific purposes and functions achieved by the present utility model, the present utility model will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0018] Refer to Figures 1-6As shown, the utility model provides a guiding device for a plastic sheet extruder, comprising a guiding device body 3 on a conveying device 2 arranged at the discharge end of a cooling device 12 on an extruder body 1, a forming die 11 is also arranged between the discharge end of the extruder body 1 and the cooling device 12, the guiding device body 3 comprises two support plates 31 respectively arranged on both sides of the conveying device 2 and arranged along the output direction of the conveying device 2, and a plurality of guide wheels 311 capable of contacting the side of the plastic sheet are distributed on the support plate 31 in the extended length direction; after the molten plastic is extruded through the extruder body 1, it is extruded and formed by the forming die 11, and then enters the cooling device 12 for cooling and shaping. The shaped plastic sheet is transported to the subsequent processing step by the conveying device 2. During the conveying process, the guide wheels 311 of the guiding device body 3 contact the side of the plastic sheet and rotate freely, ensuring that the plastic sheet always remains at the center position of the conveying device 2, thereby realizing stable and continuous conveying of the plastic sheet.

[0019] The guide device body 3 includes a movable plate 32 arranged on both sides of the conveying device 2 and capable of supporting the support plate 31. The guide device body 3 also includes a frame 34 arranged directly below the support plate 31. A driving mechanism 33 is also arranged between the frame 34 and the movable plate 32 and capable of driving the movable plates 32 on both sides to move synchronously.

[0020] During the overall operation of the plastic sheet extruder, after the molten plastic is extruded through the extruder body 1 and formed through the forming mold 11, it enters the cooling device 12 for cooling and shaping. The shaped plastic sheet is transported by the conveying device 2, and during the conveying process, the guide device body 3 begins to play a role. The driving mechanism 33 drives the moving plate 32 to move, adjusts the position of the support plate 31, and makes the guide wheel 311 contact the side of the plastic sheet. As the conveying device 2 runs, the guide wheel 311 rotates freely, constraining the plastic sheet to the center position of the conveying device 2, avoiding the deviation and shaking of the plastic sheet during the conveying process, ensuring that the plastic sheet can be stably transported to the subsequent processing steps, thereby improving the production efficiency and product quality of the entire plastic sheet extruder.

[0021] A slide bar 312 is provided on one side of the support plate 31 away from the guide wheel 311, and the slide bar 312 can be slidably arranged in the movable plate 32. A buffer spring 313 is sleeved on the slide bar 312, and one end of the buffer spring 313 contacts the support plate 31, and the other end of the buffer spring 313 contacts the inner side of the movable plate 32. The cross section of the movable plate 32 is "L" shaped.

[0022] The main function of the buffer spring 313 is to play a buffering role when the guide wheel 311 contacts the side of the plastic sheet. During the transmission of the plastic sheet, when the guide wheel 311 moves due to the position change of the plastic sheet and contacts the side of the plastic sheet, a certain extrusion force will be generated. The buffer spring 313 can absorb and disperse this part of the extrusion force, avoiding damage to the plastic sheet caused by excessive instantaneous extrusion force. The driving mechanism 33 includes a gear 334 rotatably arranged at the center position of the top of the frame 34. The driving mechanism 33 also includes two racks 332 respectively arranged at the bottom of the moving plate 32, and the racks 332 are engaged with the gear 334. The guide device body 3 further includes a telescopic driving member 333 fixed to the top of the frame 34, and the output end of the telescopic driving member 333 is connected to one of the racks 332. The telescopic driving member 333 is parallel to the rack 332. The driving mechanism 33 includes at least two slide rails 331 arranged at the top of the frame 34, and two groups of sliders 3311 respectively connected to the bottom of the moving plate 32 are slidably arranged on the slide rails 331. The telescopic driving member 333 can be a hydraulic cylinder or a pneumatic cylinder or other components capable of telescoping.

[0023] When the telescopic driving member 333 is activated, it pushes the connected rack 332 to move. Due to the meshing relationship between the gear 334 and the rack 332, the other rack 332 will also move synchronously, thereby driving the moving plates 32 on both sides to move synchronously. During the movement of the moving plate 32, the slider 3311 slides on the slide rail 331, ensuring the movement stability of the moving plate 32. The movement of the moving plate 32 drives the support plate 31 to move through the slide rod 312, thereby adjusting the position of the guide wheel 311 so that the guide wheel 311 always maintains a good contact state with the side of the plastic sheet.

[0024] The above embodiments only represent one or several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A guide device for a plastic sheet extruder, comprising a guide device body (3) on a conveying device (2) arranged at the discharge end of a cooling device (12) on an extruder body (1), a forming die (11) being further arranged between the discharge end of the extruder body (1) and the cooling device (12), characterized in that: The guide device body (3) comprises two support plates (31) respectively arranged on both sides of the conveying device (2) and arranged along the output direction of the conveying device (2), and a plurality of guide wheels (311) are distributed on the support plates (31) along their length direction and are capable of contacting the side surfaces of the plastic sheet. The guide device body (3) also comprises movable plates (32) arranged on both sides of the conveying device (2) and capable of supporting the support plates (31), and the guide device body (3) also comprises a frame (34) arranged directly below the movable plates (32). A driving mechanism (33) capable of driving the movable plates (32) on both sides to move synchronously is further provided between the frame (34) and the movable plate (32); a sliding rod (312) is provided on a side of the support plate (31) away from the guide wheel (311), and the sliding rod (312) is slidably provided in the movable plate (32); a buffer spring (313) is sleeved on the sliding rod (312), and one end of the buffer spring (313) is in contact with the support plate (31), and the other end of the buffer spring (313) is in contact with the inner side of the movable plate (32).

2. A guide device for a plastic sheet extruder according to claim 1, characterized in that: The driving mechanism (33) includes a gear (334) rotatably arranged at the center position of the top of the frame (34), and the driving mechanism (33) also includes two racks (332) respectively arranged at the bottom of the movable plate (32), and the racks (332) are meshed with the gears (334). The guide device body (3) also includes a telescopic driving member (333) fixed to the top of the frame (34), and the output end of the telescopic driving member (333) is connected to one of the racks (332), and the telescopic driving member (333) is parallel to the rack (332).

3. A guide device for a plastic sheet extruder according to claim 2, characterized in that: The driving mechanism (33) comprises at least two slide rails (331) arranged on the top of the frame (34), and two groups of sliding blocks (3311) respectively connected to the bottom of the moving plate (32) are slidably arranged on the slide rails (331).

4. The guide device for a plastic sheet extruder according to claim 1, characterized in that: The cross section of the movable plate (32) is L-shaped.

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