Hot wire cutting device for PET plate forming

Abstract

The utility model discloses a hot wire cutting device for PET plate forming, and relates to the technical field of PET plate production. Comprising a base, a displacement device, a cutting device and a placing underframe, the placing underframe is used for placing a PET material, the cutting device comprises a portal frame and a hot cutting line, the two ends of the hot cutting line are located on the two sides of the portal frame respectively, and the length, width and height of the portal frame are larger than those of the to-be-cut PET material; the displacement device controls the cutting device to move from one end of the base to the other end of the base. Through the arrangement of the cutting device, the displacement device and the like, the thickness requirements of various plates can be met during production of the PET plates, one-time forming can be basically achieved, only burrs need to be processed subsequently, efficiency is high, the requirement for a containing tool of PET materials is not high, the PET plates can be more conveniently produced through the device, and the production cost of the PET plates is reduced. And the manufacturing and design cost of the extruder can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PET sheet production, and specifically relates to a hot wire cutting device for PET sheet forming. Background Technique

[0002] In the production process of PET sheets, extrusion molding is mostly used. The head design and structure of the extruder have a great influence on the quality and performance of the sheets. Generally speaking, the heads are divided into hanger heads, flat die heads, etc. The hanger head is suitable for producing wider sheets, and its runner design can make the PET melt evenly distributed during extrusion, thus ensuring the thickness uniformity of the sheets. The flat die head is suitable for producing thinner sheets. Its runner design is simpler, the extrusion pressure is smaller, which can reduce the internal stress of the sheets and improve the flatness of the sheets.

[0003] However, the above production method has high requirements for the extruder, and at the same time, the controllability of the thickness extruded by the extruder is poor. To meet the various thickness requirements of PET sheets in the market, the utility model proposes a new solution. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hot wire cutting device for PET sheet forming to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hot wire cutting device for PET sheet forming, including:

[0006] A base, a displacement device, a cutting device and a placing base frame;

[0007] The placing base frame is used for placing PET materials. The cutting device includes a gantry and a hot wire. Both ends of the hot wire are located on both sides of the gantry respectively. The length, width and height of the gantry are all greater than the length, width and height of the PET material to be cut;

[0008] The displacement device controls the cutting device to move from one end of the base to the other end, and the hot wire cuts the PET material during the movement of the cutting device.

[0009] Furthermore, for this solution, at least two groups of gantries are provided. Hot wire cutting frames are fixed on both sides of at least two gantries, and a row of hot wire installation jigs are fixed on one side of the hot wire cutting frame.

[0010] Furthermore, for this solution, both ends of the hot wire are fixed through hot wire installation jigs. The hot wire installation jigs on the two gantries are arranged vertically, and the distance between the hot wire installation jigs on each side is set to be 18 mm - 52 mm.

[0011] Furthermore, regarding this solution, the displacement device includes two sets of transmission components. Each set of transmission components includes fixed seats installed at both ends of the base. A shaft wheel is rotatably installed in the middle of the fixed seat. The two shaft wheels on each side are connected by a transmission belt. The cutting device includes a moving seat arranged at the bottom of the gantry, and the transmission belt controls the movement of the moving seat.

[0012] Furthermore, regarding this solution, the moving seat includes a sliding frame. On both sides of the top of the base, there are fixed limit tracks, and the sliding frame slides on the limit tracks. Among them, the middle of the sliding frame is hollowed out, and a pneumatic clutch is arranged at the hollowed-out part in the middle of the sliding frame.

[0013] Furthermore, regarding this solution, the pneumatic clutch includes a pneumatic block fixed to the inner wall on one side of the sliding frame. In the middle of the pneumatic block, there is a lifting shaft that is lifted and lowered by pneumatic control. Two jacks are arranged on the surface of the transmission belt, and the lifting shaft is inserted into the jacks.

[0014] Furthermore, regarding this solution, a driving source is arranged on one side of the base. A reduction box is installed on one side of the driving source and power transmission is generated between them. Two output shafts are fixed to the output end of the reduction box, and the two output shafts are coaxially fixed to the shaft wheels on both sides of the base respectively.

[0015] Furthermore, regarding this solution, the hot wire cutting frame on one of the gantries is installed on both sides of the gantry through a linear slide, and the linear slide controls the hot wire on the hot wire cutting frame to move vertically upward.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] Through the settings of the cutting device and the displacement device, etc., this hot wire cutting device for PET sheet forming can meet the thickness requirements of various sheets during the production of PET sheets, and basically can be formed in one time. Only the burrs need to be processed subsequently, with high efficiency, and the requirements for the tools for holding PET materials are not high. This device is more convenient and efficient for producing PET sheets, and can also reduce the manufacturing and design costs of the extruder, and is suitable for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the left axonometric structural schematic diagram of the present utility model;

[0020] Figure 3 is of the present utility model Figure 2 amplified structural schematic diagram of part A.

[0021] In the figure: 1. Base; 101. Limit track; 2. Placement base frame; 3. Fixed seat; 4. Axle wheel; 5. Transmission belt; 6. Slide carriage; 7. Gantry; 8. Hot wire cutting frame; 9. Hot wire installation fixture; 10. Linear slide; 11. Reduction gearbox; 111. Driving source; 12. Output shaft; 13. Pneumatic block; 131. Lifting shaft. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] As Figures 1 - 3 shown, the present invention provides a technical solution: a hot wire cutting device for PET sheet forming, including a base 1, a displacement device, a cutting device, and a placement base frame 2. The placement base frame 2 is used to place PET materials. The cutting device includes a gantry 7 and a hot wire. The hot wire cutting device adopts an independent steel structure gantry design to ensure firmness, durability, and stable operation. Both ends of the hot wire are respectively located on both sides of the gantry 7. The length, width, and height of the gantry 7 are all greater than the length, width, and height of the PET material to be cut. The displacement device controls the cutting device to move from one end of the base 1 to the other end. During the movement of the cutting device, the hot wire cuts the PET material. In this way, the PET material is kept stable by its own weight, and during the cutting process, the hot wire actively passes through the PET material to cut the PET material.

[0024] As Figure 1 and Figure 2 shown, to ensure the smooth implementation of this embodiment, it should be understood that at least two groups of gantries 7 are provided. On both sides of at least two gantries 7, hot wire cutting frames 8 are fixed. On one side of the hot wire cutting frame 8, a row of hot wire installation fixtures 9 are fixed. Both ends of the hot wire are fixed through the hot wire installation fixtures 9. The hot wire installation fixtures 9 on the two gantries 7 are arranged vertically. The distance between the hot wire installation fixtures 9 on each side is set to 18 mm - 52 mm. The hot wire is horizontally installed at both ends of the gantry 7 through the hot wire installation fixtures 9. When passing through the PET material, the PET material can be cut by the hot wire. After the hot wire is fixed, the power supply wires of the hot wire are arranged one above the other, without causing interference. The hot wire cutting frame 8 on one of the gantries 7 is installed on both sides of the gantry 7 through a linear slide 10. The linear slide 10 controls the hot wire on the hot wire cutting frame 8 to move vertically upward. One set in the vertical direction can move as a whole, aiming to match with the other set to obtain different hot wire intervals to meet the cutting requirements of thinner PET sheets.

[0025] As Figure 2 and Figure 3 shown, to ensure the smooth implementation of this embodiment, it should be understood that the displacement device includes two sets of transmission components. Each set of transmission components includes fixed seats 3 installed at both ends of the base 1. A bearing is provided in the middle of the fixed seat 3. A shaft wheel 4 is rotatably installed in the middle of the fixed seat 3 through the bearing. The two shaft wheels 4 on each side are connected by a transmission belt 5. The cutting device includes a moving seat provided at the bottom of the gantry 7. The transmission belt 5 controls the movement of the moving seat. The driving of this device is realized by the transmission belt 5. The moving seat is normally fixed to the transmission belt 5. When the transmission belt 5 moves, it can drive the moving seat to move. During the movement of the moving seat, the lateral movement of the gantry 7 can be realized.

[0026] As Figure 2 and Figure 3 shown, to ensure the smooth implementation of this embodiment, it should be understood that the moving seat includes a carriage 6. On both sides of the top of the base 1, limiting tracks 101 are fixed. The carriage 6 slides on the limiting tracks 101. The limiting tracks 101 are used to limit the carriage 6 to prevent it from falling off during the movement and maintain the relative stability of its movement. Among them, the middle of the carriage 6 is hollowed out to reduce the overall weight of the carriage 6 and the entire cutting device. An air-operated clutch is provided at the hollowed-out part in the middle of the carriage 6. The air-operated clutch includes an air-operated block 13 fixed to the inner wall of one side of the carriage 6. In the middle of the air-operated block 13, there is a lifting shaft 131 that is lifted and lowered by pneumatic control. Two jacks are provided on the surface of the transmission belt 5. The lifting shaft 131 is inserted into the jacks. Through the setting of the air-operated clutch, the two gantries 7 can move synchronously or can be separated to perform hot wire cutting separately. When only one set of hot wire is needed, the other set of cutting wires is disengaged from the transmission belt 5 through the air-operated clutch, and only one set of hot wire is used for cutting.

[0027] To ensure the smooth implementation of this embodiment, it should be understood that a driving source 111 is provided on one side of the base 1. A speed reducer 11 is installed on one side of the driving source 111 and power transmission is generated between them. Two output shafts 12 are fixed to the output end of the speed reducer 11. The two output shafts 12 are coaxially fixed to the shaft wheels 4 on both sides of the base 1 respectively.

[0028] In summary, the principles of the two sets of hot wire cutting frames 8 are the same. Each set has 25 hot wires. The position of the first hot wire at the bottom is fixed, and the spacing of the other hot wires is servo-driven to be adjusted automatically as a whole, with a range of about 18 mm - 52 mm. The first set of hot wires can be lifted as a whole by about 55 mm. When used in combination with the second set of hot wires, material cutting of 10 - 50 mm can be achieved.

[0029] When the cutting requires 10 mm, adjust the distance between the two sets of hot wires to 20 mm in total, and then lift the whole first set of hot wires by 10 mm. Through the combination of the distances between the two sets of hot wires, the cutting of 10 mm is achieved. The working principle for cutting materials within 10 - 25 mm is the same. When the cutting requires 50 mm, only use the first set of hot wires, separate the second set of hot wires from the displacement device, and adjust the distance between all the hot wires in the first set to 50 mm. The cutting frame 8 of the first set of hot wires works independently. The working principle for cutting materials of 25 - 50 mm is the same. When cutting materials over 50 mm, only use the first set of hot wires, separate the second set of hot wires from the displacement device, and it is necessary to remove some hot wires at intervals according to actual needs.

Claims

1. A hot wire cutting device for PET sheet forming, characterized in that, Including: A base (1), a displacement device, a cutting device, and a placement chassis (2); The placement chassis (2) is used for placing PET materials. The cutting device includes a gantry (7) and a hot cutting wire. The two ends of the hot cutting wire are respectively located on both sides of the gantry (7). The length, width, and height of the gantry (7) are all greater than the length, width, and height of the PET material to be cut; The displacement device controls the cutting device to move from one end of the base (1) to the other end, and the hot cutting wire cuts the PET material during the movement of the cutting device.

2. The hot wire cutting device for PET sheet forming according to claim 1, characterized in that: At least two groups of gantries (7) are provided. Hot wire cutting frames (8) are fixed on both sides of at least two gantries (7). A row of hot wire installation jigs (9) is fixed on one side of the hot wire cutting frame (8).

3. The hot wire cutting device for PET sheet forming according to claim 1, wherein: The two ends of the hot cutting wire are fixed through the hot wire installation jigs (9). The hot wire installation jigs (9) on the two gantries (7) are arranged vertically, and the distance between the hot wire installation jigs (9) on each side is set to be 18 mm - 52 mm.

4. A hot wire cutting device for PET sheet forming according to claim 1, characterized in that: The displacement device includes two groups of transmission components. Each group of transmission components includes fixed seats (3) installed at both ends of the base (1). A shaft wheel (4) is rotatably installed in the middle of the fixed seat (3). The two shaft wheels (4) on each side are connected by a transmission belt (5). The cutting device includes a moving seat arranged at the bottom of the gantry (7), and the transmission belt (5) controls the movement of the moving seat.

5. The hot wire cutting device for PET sheet forming according to claim 4, characterized in that: The moving seat includes a sliding frame (6). Limiting tracks (101) are fixed on both sides of the top of the base (1). The sliding frame (6) slides on the limiting tracks (101). Among them, the middle of the sliding frame (6) is hollowed out, and a pneumatic clutch is arranged at the hollowed-out part in the middle of the sliding frame (6).

6. The hot wire cutting device for PET sheet forming according to claim 4, characterized in that: The pneumatic clutch includes a pneumatic block (13) fixed on the inner wall of one side of the sliding frame (6). A lifting shaft (131) that is lifted by pneumatic control is arranged in the middle of the pneumatic block (13). Two jacks are arranged on the surface of the transmission belt (5), and the lifting shaft (131) is inserted into the jacks.

7. A hot wire cutting device for PET sheet forming according to claim 1, characterized in that: A driving source (111) is arranged on one side of the base (1). A reduction gearbox (11) is installed on one side of the driving source (111) and power transmission is generated between them. Two output shafts (12) are fixed at the output end of the reduction gearbox (11), and the two output shafts (12) are coaxially fixed to the shaft wheels (4) on both sides of the base (1) respectively.

8. A hot wire cutting device for PET sheet forming according to claim 1, characterized in that: The hot wire cutting frame (8) on one of the gantries (7) is installed on both sides of the gantry (7) through a linear slide (10), and the linear slide (10) controls the hot wire on the hot wire cutting frame (8) to move vertically upward.

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