Automatic heating and feeding device for plastic plate

Abstract

The utility model discloses automatic heating material loading device of plastic board, include: frame, be equipped with net chain conveyer and conveyer drive mechanism on the frame, be equipped with heating box on the frame front part, still be equipped with material loading frame, be equipped with slip seat and material loading drive mechanism on the material loading frame, be equipped with lifting seat and lifting drive mechanism on the slip seat, the lifting seat bottom is equipped with vacuum chuck, be equipped with drive shaft on the net chain conveyer rear end, the both ends of drive shaft are installed in two bearing seats through bearing respectively, two tension cylinders drive two bearing seats to move to the net chain tension behind respectively, the drive shaft is driven to rotate by first servo motor, first servo motor is installed on one end of drive shaft, and the net chain conveyer front end is installed with rotating shaft and second servo motor, swing frame, and the swing frame rear end is fixed with rotating shaft, and the rotating shaft can drive swing frame to swing down with the net chain front end after rotating. Automatic heating material loading device of plastic board can reduce the manual cost greatly.

Description

Technical Field

[0001] This utility model relates to the field of vacuum adsorption molding equipment, specifically to an automatic heating and feeding device for plastic sheets. Background Technology

[0002] Vacuum adsorption molding is a plastic processing technology. The main principle is to heat a flat plastic sheet until it softens, then lay it on a mold. Vacuum adsorption is then used to press the plastic sheet tightly against the mold surface, and after cooling, it is formed. The plastic sheet is usually transported by workers to a conveyor belt, which then transports it to a heating chamber for heating. Afterward, the conveyor belt removes the heated, softened plastic sheet, and workers then transport and lay it onto the mold. However, relying on workers to handle the plastic sheet loading has the disadvantage of high labor costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automatic heating and feeding device for plastic sheets that can greatly reduce labor costs.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: an automatic heating and feeding device for plastic sheets, comprising: a frame, on which a mesh chain conveyor capable of moving back and forth and a conveyor drive mechanism capable of driving the mesh chain conveyor to move back and forth are arranged. After the mesh chain conveyor is driven forward, its front end can push out of the frame. A pressing wheel is also arranged on the left and right sides of the middle of the frame, and the two pressing wheels press against the frames on the left and right sides of the mesh chain conveyor respectively. A heating box is arranged on the front of the frame, the rear of the mesh chain conveyor is located outside the heating box, and the front of the mesh chain conveyor passes forward through the heating box. The plastic sheet to be heated is fed forward into the heating chamber for heating. The mesh conveyor, driven forward, then delivers the heated plastic sheet out of the heating chamber. The feature is that it also includes a loading rack, on which is a sliding base and a loading drive mechanism. The sliding base has a lifting base and a lifting drive mechanism. A vacuum suction cup is installed at the bottom of the lifting base. After the lifting base descends, the vacuum suction cup can grasp the plastic sheet stacked on the tray. The sliding base, driven to slide, moves the grasped plastic sheet to the upper rear of the mesh conveyor. A drive shaft with chain teeth is installed at the rear end of the chain conveyor to drive the mesh chain to rotate. On the left and right sides of the rear end of the mesh chain conveyor, there is a sliding bearing seat and a tension cylinder, respectively. The two ends of the drive shaft are mounted in the two bearing seats via bearings. The two tension cylinders drive the two bearing seats to move backward to tension the mesh chain. The drive shaft is driven to rotate by a first servo motor, which is mounted on one end of the drive shaft and supported by the drive shaft, allowing the first servo motor to move back and forth with the drive shaft. A guide plate is installed on one side of the rear end of the mesh chain conveyor. The guide plate has openings... The conveyor has a long, narrow hole running forward and backward. A connecting rod is installed on the housing of the first servo motor, and a guide post is installed on the outer end of the connecting rod, which passes through the long, narrow hole. The guide post and the long, narrow hole cooperate to prevent the housing of the first servo motor from rotating during operation, while not hindering the forward and backward movement of the first servo motor. A rotating shaft and a second servo motor for driving the rotating shaft are installed on the front end of the mesh conveyor. The rear end of the swing frame is fixed to the rotating shaft, and the front end of the swing frame is equipped with a rotatable shaft with chain teeth. The mesh chain is fitted onto the rotating shaft and the drive shaft. After the rotating shaft rotates, it can drive the swing frame to swing downward with the front end of the mesh chain.

[0005] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets, the sliding seat is mounted on the feeding rack in a way that allows it to slide left and right.

[0006] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets, a heating plate is provided in the heating chamber, and heating blocks are laid on the heating plate. The plastic sheet is conveyed to the bottom of the heating plate and heated by the heating blocks. The heating plate can be slidably installed in the heating chamber. Double doors are provided on both the left and right sides of the heating chamber, so that the heating plate can be removed from the heating chamber.

[0007] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets, the stainless steel mesh chain of the mesh conveyor is covered with a layer of Teflon.

[0008] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets: a vertical roller is fixed on the lower left and right sides of the rear end of the mesh chain conveyor; a short track is fixed on the left and right sides of the rear of the frame; the two vertical rollers rest on the two short tracks respectively; long tracks are also fixed on the left and right sides of the mesh chain conveyor; and an inverted roller is fixed on the left and right sides of the middle and front of the frame; the two long tracks rest on the two inverted rollers on their respective sides. When the mesh chain conveyor is driven to move back and forth, it will cause the vertical roller to roll on the short tracks and will carry the long tracks to move back and forth on the inverted rollers.

[0009] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets, the inverted rollers and upright rollers on one side of the frame are provided with wheel grooves, and the short rails and long rails on this side are engaged in the wheel grooves of the corresponding rollers, so that the mesh chain conveyor can be limited to the left and right. The rollers and rails on the other side of the frame do not limit the left and right movement of the mesh chain conveyor after they cooperate.

[0010] Furthermore, in the aforementioned automatic heating and feeding device for plastic sheets, the grooves on each roller on one side of the frame are all isosceles trapezoidal, and the two tracks on that side are hexagonal steel bars that are inserted into the isosceles trapezoidal grooves. The surfaces of each roller on the other side of the frame are all smooth, and the two tracks on that side are all flat steel bars.

[0011] The advantages of this utility model are: the automatic heating and feeding device for plastic sheets can place the plastic sheets stacked on the pallet one by one onto the mesh conveyor, which will then transport them into the heating chamber. By setting a swing frame, the heated plastic sheets can be laid on the mold without manual handling, thereby greatly reducing labor costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the automatic heating and feeding device for plastic sheets.

[0013] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0014] Figure 3 This is a schematic diagram showing the installation between the mesh conveyor and the frame. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0016] like Figure 1 , Figure 2As shown, the automatic heating and feeding device for plastic sheets includes: a frame 1, on which a mesh conveyor 2 capable of moving back and forth is mounted, and a conveyor drive mechanism capable of driving the mesh conveyor 2 to move back and forth. In practical applications, the conveyor drive mechanism can include: a synchronous belt, the synchronous belt being driven to rotate by a synchronous pulley, the synchronous pulley being driven by a motor, and a section of the synchronous belt being fixed to the mesh conveyor 2; after the mesh conveyor 2 is driven forward, its front end can push out of the frame 1, and on the left and right sides of the middle of the frame 1, respectively... There is one pressing wheel 3, and two pressing wheels 3 press against the frames on the left and right sides of the mesh conveyor 2 respectively. After the mesh conveyor 2 moves forward and pushes out of the frame 1, its rear end is prone to tilting up. The pressing of the two pressing wheels 3 can prevent the rear end of the mesh conveyor 2 from tilting up. A heating box 4 is set on the front of the frame 1. The rear of the mesh conveyor 2 is located outside the heating box 4. The front of the mesh conveyor 2 passes forward through the heating box 4, and the mesh conveyor 2 can feed the plastic sheet 9 to be heated forward into the heating box 4 for heating. Heating is achieved by driving the mesh conveyor 2 forward, which then delivers the heated plastic sheet 9 out of the heating chamber 4. A feeding rack 5 is also provided, on which a sliding slide seat 6 and a feeding drive mechanism that drives the slide seat 6 are mounted. In practical applications, the feeding drive mechanism can include: a synchronous belt driven to rotate by a synchronous pulley, which is driven by a motor; a section of the synchronous belt is fixed to the slide seat 6; and a liftable lifting seat 7 is mounted on the slide seat 6, along with a mechanism that drives the lifting seat 7 to move. In practical applications, the lifting drive mechanism can include a gear and a rack. The rack is mounted on the lifting seat 7, and the gear is driven to rotate by a motor and fixed to the sliding seat 6. A vacuum suction cup 8 is installed at the bottom of the lifting seat 7. After the lifting seat 7 descends, it can grab the plastic sheet 9 stacked on the tray through the vacuum suction cup 8. After the sliding seat 6 is driven to slide, it can move the grabbed plastic sheet 9 to the upper part of the rear of the mesh conveyor 2. In this embodiment, the sliding seat 6 is mounted on the loading rack 5 and can slide left and right.The rear end of the mesh conveyor 2 is equipped with a drive shaft for rotating the mesh chain. The drive shaft has chain teeth. On the left and right sides of the rear end of the mesh conveyor 2, there is a bearing seat that can slide back and forth and a tensioning cylinder 10, respectively. The two ends of the drive shaft are respectively mounted in the two bearing seats through bearings. The two tensioning cylinders 10 drive the two bearing seats to move backward to tension the mesh chain. The drive shaft is driven to rotate by a first servo motor 14. The first servo motor 14 is mounted on one end of the drive shaft and is supported by the drive shaft, so that the first servo motor 14 can move back and forth with the drive shaft. A guide plate 11 is provided on one side of the rear end of the mesh conveyor 2. The guide plate 11 has a forward and backward orientation. The elongated hole 12 is provided. A connecting rod 13 is provided on the housing of the first servo motor 14. A guide post 21 is provided on the outer end of the connecting rod 13, which passes through the elongated hole 12. The guide post 21 and the elongated hole 12 cooperate to prevent the housing of the first servo motor 14 from rotating during operation, while not hindering the forward and backward movement of the first servo motor 14. A rotating shaft and a second servo motor 15 and a swing frame 16 are installed on the front end of the mesh conveyor 2. The rear end of the swing frame 16 is fixed to the rotating shaft, and the front end of the swing frame 16 is provided with a rotatable rotating shaft with chain teeth. The mesh chain is fitted onto the rotating shaft and the drive shaft. After the rotating shaft rotates, it can drive the swing frame 16 to swing downward with the front end of the mesh chain. When the swing frame 16 swings downward with the front end of the mesh chain, the two tensioning cylinders 10 are compressed to adaptively tension the mesh chain.

[0017] During operation, a worker drives a forklift to place a pallet of plastic sheets 9 on the material position below the lifting platform 7. After the lifting platform 7 descends, it uses a vacuum suction cup 8 to grab the plastic sheets 9 stacked on the pallet. Then, it drives the sliding platform 6 to slide and move the grabbed plastic sheets 9 to the upper part of the rear of the mesh conveyor 2. Next, the lifting platform 7 descends and places the plastic sheets 9 on the mesh conveyor 2. The mesh conveyor 2 feeds the plastic sheets 9 to be heated forward into the heating chamber 4 for heating. After heating, it drives the mesh conveyor 2 to move forward and send the heated plastic sheets 9 out of the heating chamber 4. Then, the mesh conveyor 2 continues to work and transport the plastic sheets 9 forward until the front end of the plastic sheets 9 leaves the mesh conveyor 2 and hangs down naturally. Then, the rotating shaft rotates and drives the swing frame 16 to swing the front end of the mesh conveyor downward, so that the naturally hanging front end of the plastic sheets 9 can rest on the mold. Then, it drives the mesh conveyor 2 to move backward, so that the entire plastic sheet 9 can detach from the mesh conveyor 2 and be laid on the mold.

[0018] In this embodiment, a heating plate is provided in the heating chamber 4, and a heating block is laid on the heating plate. The plastic sheet is conveyed to the bottom of the heating plate and heated by the heating block. The heating plate is installed in the heating chamber by sliding left and right. Double doors are provided on both the left and right sides of the heating chamber 4, so that the heating plate can be removed from the heating chamber 4. This arrangement facilitates maintenance and replacement of the heating block.

[0019] To prevent the plastic sheet from sticking to the stainless steel mesh chain after heating, the outside of the stainless steel mesh chain is coated with a layer of Teflon.

[0020] like Figure 3 As shown, a vertical roller 17 is fixed on the lower left and right sides of the rear end of the mesh conveyor 2, and a short rail 18 is fixed on the left and right sides of the rear of the frame 1. The two vertical rollers 17 rest on the two short rails 18 respectively. Long rails 19 are also fixed on the left and right sides of the mesh conveyor 2. An inverted roller 20 is fixed on the left and right sides of the middle and front of the frame 1, and the two long rails 19 rest on the two inverted rollers 20 on their respective sides. When the mesh conveyor 2 is driven to move back and forth, it will cause the vertical roller 17 to roll on the short rails 18 and will carry the long rail 19 to move back and forth on the inverted rollers 20.

[0021] The inverted roller 20 and upright roller 17 on the right side of the frame 1 are provided with wheel grooves, and the short rail 18 and long rail 19 on this side are engaged in the wheel grooves of the corresponding rollers, so that the mesh chain conveyor 2 can be limited to the left and right. The rollers and rails on the left side of the frame 1 do not limit the left and right movement of the mesh chain conveyor 2 after they are engaged.

[0022] The grooves on each roller on the right side of frame 1 are all isosceles trapezoidal, and the two rails on this side are hexagonal steel bars that fit into the isosceles trapezoidal grooves. The surfaces of each roller on the left side of frame 1 are smooth, and the two rails on this side are flat steel bars.

Claims

1. An automatic heating and feeding device for plastic sheets, comprising: The frame houses a mesh conveyor that can move back and forth, and a drive mechanism that propels the conveyor forward and backward. When driven forward, the front end of the mesh conveyor can extend beyond the frame. Two pressing wheels are located on the left and right sides of the middle of the frame, pressing against the frames on either side of the mesh conveyor. A heating chamber is located at the front of the frame, with the rear of the mesh conveyor located outside the heating chamber. The front of the conveyor passes through the heating chamber, allowing it to feed the plastic sheet to be heated into the chamber for heating. The device, after being driven forward, can deliver the heated plastic sheet out of the heating chamber. Its features include: a feeding rack with a sliding base and a feeding drive mechanism; a lifting base with a lifting mechanism; a vacuum suction cup at the bottom of the lifting base; and a mechanism to grip the plastic sheet stacked on the tray after the lifting base descends. The sliding base, after being driven to slide, can transfer the gripped plastic sheet to the upper rear of the mesh conveyor. The rear end of the mesh conveyor is equipped with a mechanism for driving the mesh chain to rotate. The drive shaft, equipped with chain teeth, has a sliding bearing seat and a tension cylinder on each of the left and right sides of the rear end of the mesh conveyor. The two ends of the drive shaft are mounted in the bearing seats via bearings. The two tension cylinders drive the two bearing seats to move backward to tension the mesh conveyor. The drive shaft is driven to rotate by a first servo motor, which is mounted on one end of the drive shaft and supported by the drive shaft, allowing the servo motor to move back and forth with the drive shaft. A guide plate with elongated holes running forward and backward is provided on one side of the rear end of the mesh conveyor. A connecting rod is installed on the housing of the first servo motor. A guide post is installed on the outer end of the connecting rod and passes through an elongated hole. The guide post and the elongated hole cooperate to prevent the housing of the first servo motor from rotating during operation, while not hindering the forward and backward movement of the first servo motor. A rotating shaft and a second servo motor for driving the rotating shaft are installed on the front end of the mesh conveyor. The rear end of the swing frame is fixed to the rotating shaft, and the front end of the swing frame is equipped with a rotatable rotating shaft with chain teeth. The mesh chain is fitted onto the rotating shaft and the drive shaft. After the rotating shaft rotates, it can drive the swing frame to swing downward with the front end of the mesh chain.

2. The automatic heating and feeding device for plastic sheets according to claim 1, characterized in that: The sliding seat can be installed on the feeding rack in a left-right sliding manner.

3. The automatic heating and feeding device for plastic sheets according to claim 1, characterized in that: A heating plate is installed in the heating chamber, and heating blocks are laid on the heating plate. The plastic sheet is conveyed to the bottom of the heating plate and heated by the heating blocks. The heating plate can be installed in the heating chamber by sliding left and right. There are double doors on both the left and right sides of the heating chamber, so that the heating plate can be removed from the heating chamber.

4. The automatic heating and feeding device for plastic sheets according to claim 1, characterized in that: The stainless steel mesh chain of the mesh conveyor is coated with a layer of Teflon.

5. The automatic heating and feeding device for plastic sheets according to claim 1, characterized in that: On the lower left and right sides of the rear end of the mesh chain conveyor, there is a standing roller. On the left and right sides of the rear of the frame, there is a short rail. The two standing rollers rest on the two short rails respectively. On the left and right sides of the mesh chain conveyor, there are also long rails. On the left and right sides of the middle and front of the frame, there is an inverted roller. The two long rails rest on the two inverted rollers on their respective sides. When the mesh chain conveyor is driven to move back and forth, it will cause the standing roller to roll on the short rail and will carry the long rail back and forth on the inverted roller.

6. The automatic heating and feeding device for plastic sheets according to claim 5, characterized in that: The inverted rollers and upright rollers on one side of the frame are provided with wheel grooves, and the short rails and long rails on this side are engaged in the wheel grooves of the corresponding rollers, so that the mesh chain conveyor can be limited to the left and right. The rollers and rails on the other side of the frame do not limit the left and right movement of the mesh chain conveyor after they are matched.

7. The automatic heating and feeding device for plastic sheets according to claim 6, characterized in that: The grooves on each roller on one side of the frame are all isosceles trapezoidal, and the two rails on that side are hexagonal steel bars that fit into the isosceles trapezoidal grooves. The surfaces of each roller on the other side of the frame are smooth, and the two rails on that side are flat steel bars.

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