Laser cutting positioning device for polytetrafluoroethylene glass fiber substrate

Abstract

The utility model discloses a laser cutting positioning device for a polytetrafluoroethylene glass fiber substrate, which belongs to the technical field of polytetrafluoroethylene glass fiber substrate positioning, and comprises a box body, two bases and two fixing blocks are arranged in the box body, and the two bases and the two fixing blocks are arranged in the box body. The two bases and the two fixing blocks are inserted into the box body and are in sliding connection with the box body, top plates are arranged at the tops of the two fixing blocks, air in the second cavity is pumped out through the arranged vacuum pump to form negative pressure, and therefore the polytetrafluoroethylene glass fiber base plate is firmly adsorbed to the auxiliary blocks; the vacuum adsorption clamp can better adapt to the shape change of the substrate, the deformation of the substrate caused by uneven local stress is reduced, and meanwhile, the adsorption force can be conveniently adjusted by controlling the air exhaust speed and the vacuum degree of the vacuum pump so as to meet different cutting requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to polytetrafluoroethylene glass fiber substrate positioning technical field, more specifically, relate to polytetrafluoroethylene glass fiber substrate's laser cutting positioning device. BACKGROUND

[0002] Polytetrafluoroethylene glass fiber substrate is a kind of high-performance composite material. It combines the excellent chemical stability of polytetrafluoroethylene (such as strong acid, strong alkali and organic solvent), good electrical insulation and low friction coefficient, and the high strength and dimensional stability of glass fiber. This substrate is widely used in electronics, aerospace, chemical industry and many other fields.

[0003] Chinese patent authorized announcement number:202323641860.7 patent number provides laser cutting positioning device, including device box, laser cutting device and purification and impurity removal device, the device box includes workbench and box, the recess is provided on the workbench and the recess both sides are provided with clamping device, the recess is provided with impurity removal frame and the bottom of recess is provided with air duct, the top of impurity removal frame is provided with hollow bearing plate, the purification and impurity removal device includes purification fan and filter screen, the purification fan is arranged at the air duct outlet of workbench one side and is fixedly connected with workbench, the filter screen is fixedly installed on the purification fan. Through purification fan, the air in the box is made to flow, in addition, the smoke and dust generated in the laser cutting process are efficiently filtered through impurity removal frame and filter screen respectively, so as to avoid that smoke and dust may contaminate the cutting material and spread to the surrounding environment.

[0004] But the above-mentioned patent is improved by hydraulic telescopic device to make two clamping plates directly extrude the substrate to realize clamping, since the pressure of hydraulic clamp is larger, the material structure on the surface of substrate may be damaged in the clamping process, therefore, polytetrafluoroethylene glass fiber substrate's laser cutting positioning device is proposed for the above-mentioned problems. Utility model content

[0005] 1. The technical problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide polytetrafluoroethylene glass fiber substrate's laser cutting positioning device, the air in the second cavity is extracted to form negative pressure by the vacuum pump, so as to firmly adsorb the polytetrafluoroethylene glass fiber substrate on the auxiliary block, the vacuum adsorption clamp can better adapt to the shape change of substrate, reduce the deformation of substrate caused by uneven local stress, and the air extraction speed and vacuum degree of vacuum pump can be controlled to conveniently adjust the size of adsorption force, to meet different cutting requirements.

[0007] Technical scheme

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A laser cutting positioning device for polytetrafluoroethylene (PTFE) fiberglass substrates includes a housing. Inside the housing are two bases and two fixing blocks, all inserted into and slidably connected to the housing. Each fixing block has a top plate on its top, and auxiliary blocks are fixedly installed on the adjacent sides of the top plates. Each auxiliary block has a second cavity, and sealing rings are fixedly installed on the adjacent sides of the auxiliary blocks. Vacuum pumps are embedded in the bottom of each auxiliary block, and the inlet pipes of both vacuum pumps communicate with the second cavities. A first electric telescopic rod is fixedly installed inside each auxiliary block, and a piston is fixedly installed at the output end of the first electric telescopic rod. A connecting pipe is fixedly installed inside the second cavities, inserted into and communicating with the sliding groove of the piston. A laser cutting mechanism is mounted on the housing.

[0010] Furthermore, control valves are provided inside both auxiliary blocks and outside the connecting pipe. A servo motor is fixedly installed inside the housing. A bidirectional lead screw and two gears are rotatably connected inside the housing. The two gears mesh, with one gear fixedly installed outside the bidirectional lead screw. The output end of the servo motor is fixedly connected to the other gear.

[0011] Furthermore, each of the two bases has a first cavity, and an air pump is embedded on the side of each base that is far apart from each other. The air inlet end of the air pump is connected to the first cavity. A side plate is fixedly installed on one side of each of the two bases, and a limit roller is rotatably connected to the top plate and the side plate through a fixing frame.

[0012] Furthermore, a box panel is provided on one side of the box body, the box panel is inserted into the interior of the box body and slidably connected thereto, and a plug rod is provided on one side of the box body, the plug rod is inserted into the interior of the box body and slidably connected thereto, the plug rod passes through two bases and slidably connected thereto.

[0013] Furthermore, a second electric telescopic rod is embedded in the top of each of the two fixed blocks. The output end of the second electric telescopic rod is fixedly connected to the top plate. T-shaped limiting plates are fixedly installed at the bottom of the two top plates and on the corresponding sides of the second electric telescopic rod. The T-shaped limiting plates are inserted into the interior of the fixed blocks and slidably connected to them.

[0014] Furthermore, a controller is embedded on one side of the housing, and the controller is electrically connected to the suction pump, vacuum pump, first electric telescopic rod, servo motor and second electric telescopic rod. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This solution uses a vacuum pump to extract air from the second chamber, creating negative pressure to firmly adhere the PTFE fiberglass substrate to the auxiliary block. The vacuum adsorption fixture can better adapt to changes in the substrate's shape, reducing substrate deformation caused by uneven local stress. At the same time, by controlling the pumping speed and vacuum level, the adsorption force can be easily adjusted to meet different cutting requirements. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a front sectional view of the present invention.

[0019] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial structural diagram of the present invention.

[0021] The following are the labels in the diagram: 1. Box body; 2. Base; 3. First cavity; 4. Suction pump; 5. Fixing block; 6. Top plate; 7. Auxiliary block; 8. Second cavity; 9. Vacuum pump; 10. Sealing ring; 11. Piston; 12. First electric telescopic rod; 13. Side plate; 14. Limiting roller; 15. Bidirectional lead screw; 16. Gear; 17. Servo motor; 18. Second electric telescopic rod; 19. T-shaped limiting plate; 20. Insert rod; 21. Laser cutting mechanism; 22. Controller; 23. Box panel. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0023] Please see Figures 1-3A laser cutting positioning device for polytetrafluoroethylene (PTFE) fiberglass substrate includes a housing 1. Inside the housing 1, there are two bases 2 and two fixing blocks 5. The two bases 2 and the two fixing blocks 5 are inserted into the housing 1 and slidably connected thereto. The top of each of the two fixing blocks 5 is provided with a top plate 6. On the side of the two top plates 6 that are close to each other, auxiliary blocks 7 are fixedly installed. A second cavity 8 is opened on each of the two auxiliary blocks 7. A sealing ring 10 is fixedly installed on the side of the two auxiliary blocks 7 that are close to each other. A vacuum pump 9 is embedded in the bottom of each of the two auxiliary blocks 7. The air inlet pipe ends of the two vacuum pumps 9 are connected to the second cavity 8. A first electric telescopic rod 12 is fixedly installed inside each of the two auxiliary blocks 7. A piston 11 is fixedly installed at the output end of the first electric telescopic rod 12. A connecting pipe is fixedly installed inside the second cavity 8, and the connecting pipe is inserted into the sliding groove of the piston 11 and connected thereto. A laser cutting mechanism 21 is provided on the housing 1.

[0024] The laser cutting mechanism 21, which is an existing structure, is used to cut the fixed polytetrafluoroethylene (PTFE) fiberglass substrate. The vacuum pump 9 is used to extract the air from the second chamber 8 to create a negative pressure, thereby firmly adsorbing the PTFE fiberglass substrate onto the auxiliary block 7. The vacuum adsorption fixture can better adapt to changes in the shape of the substrate and reduce substrate deformation caused by uneven local force. At the same time, by controlling the pumping speed and vacuum level of the vacuum pump 9, the adsorption force can be easily adjusted to meet different cutting requirements.

[0025] The sealing ring 10 ensures uniform sealing pressure around the entire edge of the auxiliary block 7. Meanwhile, the servo motor 17 drives the two gears 16 to mesh and rotate, adjusting the distance between the two fixed blocks 5 on the outside of the bidirectional lead screw 15. The second electric telescopic rod 18 adjusts the height of the top plate 6, making it easy to adjust according to the thickness and size of the polytetrafluoroethylene glass fiber substrate.

[0026] Control valves are installed inside the two auxiliary blocks 7 and outside the connecting pipe. A servo motor 17 is fixedly installed inside the housing 1. A bidirectional lead screw 15 and two gears 16 are rotatably connected inside the housing 1. The two gears 16 mesh, and one gear 16 is fixedly installed outside the bidirectional lead screw 15. The output end of the servo motor 17 is fixedly connected to the other gear 16.

[0027] Please see Figure 4 Each of the two bases 2 has a first cavity 3. Each of the two bases 2 has a suction pump 4 embedded on the side away from each other. The air inlet end of the suction pump 4 is connected to the first cavity 3. Each of the two bases 2 has a side plate 13 fixedly installed on one side. Each of the two top plates 6 and the side plates 13 is rotatably connected to a limiting roller 14 through a fixing frame.

[0028] By placing the polytetrafluoroethylene (PTFE) glass fiber substrate on top of the two bases 2 so that it contacts the limiting roller 14 on one side of the side plate 13, and by using the action of the two suction pumps 4, the PTFE glass fiber substrate is initially fixed in position by adsorption through the first cavity 3. At the same time, the rubber pad embedded on the top of the base 2 provides assistance, and the position of the limiting roller 14 on the top plate 6 is adjusted by operating the second electric telescopic rod 18, so that the limiting roller 14 is in contact with the PTFE glass fiber substrate to further restrict it.

[0029] A box panel 23 is provided on one side of the box body 1. The box panel 23 is inserted into the interior of the box body 1 and slidably connected thereto. A plug rod 20 is provided on one side of the box body 1. The plug rod 20 is inserted into the interior of the box body 1 and slidably connected thereto. The plug rod 20 passes through the two bases 2 and slidably connected thereto.

[0030] The top of each of the two fixed blocks 5 is inlaid with a second electric telescopic rod 18. The output end of the second electric telescopic rod 18 is fixedly connected to the top plate 6. T-shaped limiting plates 19 are fixedly installed at the bottom of the two top plates 6 on the corresponding sides of the second electric telescopic rod 18. The T-shaped limiting plates 19 are inserted into the interior of the fixed blocks 5 and are slidably connected to them.

[0031] A controller 22 is embedded on one side of the housing 1. The controller 22 is electrically connected to the suction pump 4, the vacuum pump 9, the first electric telescopic rod 12, the servo motor 17, and the second electric telescopic rod 18.

[0032] To accommodate substrates of different thicknesses, the piston 11 is moved laterally by the operation of the first electric telescopic rod 12, which regulates the gas inside the groove through which the piston 11 slides. This changes the pressure on the sealing device. The adsorption holes in the second cavity 8 on the auxiliary block 7 are designed to gradually become sparser from the center to the edge, so that the adsorption force in the center of the polytetrafluoroethylene glass fiber substrate is slightly stronger, while the edge can also maintain good sealing and adsorption with the assistance of the sealing ring 10.

[0033] Meanwhile, a pressure sensor is embedded on the side of the auxiliary block 7 away from the box plate 23. The pressure sensor is installed near the part where the auxiliary block 7 is bonded to the polytetrafluoroethylene glass fiber substrate to monitor the pressure of the auxiliary block 7 on the polytetrafluoroethylene glass fiber substrate in real time. The controller 22 adjusts the bonding speed and pressure of the auxiliary block 7 according to the data of the pressure sensor. When the pressure exceeds a certain threshold, which may cause excessive deformation of the sealing ring 10, the controller 22 can automatically reduce the bonding speed or pressure of the auxiliary block 7 to protect the normal shape and sealing performance of the sealing ring 10.

[0034] Working principle: The base 2 is selected according to the size of the polytetrafluoroethylene glass fiber substrate and inserted into the box 1. The position of the two bases 2 is restricted by the set insertion rod 20. The polytetrafluoroethylene glass fiber substrate is placed on the top of the two bases 2 so that it contacts the limiting roller 14 on one side of the side plate 13. The position of the polytetrafluoroethylene glass fiber substrate is initially fixed by the adsorption of the first cavity 3 by the set air pump 4. The two gears 16 are meshed and rotated by the set servo motor 17 to adjust the distance between the two fixing blocks 5 on the outside of the bidirectional lead screw 15. The height of the top plate 6 is adjusted by the set second electric telescopic rod 18.

[0035] The vacuum pump 9 creates a negative pressure by drawing out the air from the second chamber 8, thereby firmly adsorbing the polytetrafluoroethylene glass fiber substrate onto the auxiliary block 7. Then, the laser cutting mechanism 21 cuts the fixed polytetrafluoroethylene glass fiber substrate to the existing structure.

[0036] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A laser cutting and positioning device for polytetrafluoroethylene glass fiber substrates, comprising a housing (1), characterized in that: The housing (1) is internally provided with two bases (2) and two fixing blocks (5). Both bases (2) and fixing blocks (5) are inserted into the housing (1) and slidably connected thereto. Each fixing block (5) has a top plate (6) on its top. An auxiliary block (7) is fixedly installed on the side of each top plate (6) that is close to the other. Each auxiliary block (7) has a second cavity (8). A sealing ring (10) is fixedly installed on the side of each auxiliary block (7) that is close to the other. The bottom of each of the auxiliary blocks (7) is inlaid with a vacuum pump (9). The inlet pipe ends of the two vacuum pumps (9) are connected to the second cavity (8). The interior of each of the two auxiliary blocks (7) is fixedly installed with a first electric telescopic rod (12). The output end of the first electric telescopic rod (12) is fixedly installed with a piston (11). The interior of the second cavity (8) is fixedly installed with a connecting pipe, which is inserted into the groove of the piston (11) and connected to it. The housing (1) is provided with a laser cutting mechanism (21).

2. The laser cutting and positioning device for polytetrafluoroethylene glass fiber substrate according to claim 1, characterized in that: Control valves are provided inside the two auxiliary blocks (7) and outside the connecting pipe. A servo motor (17) is fixedly installed inside the housing (1). A bidirectional lead screw (15) and two gears (16) are rotatably connected inside the housing (1). The two gears (16) mesh. One of the gears (16) is fixedly installed outside the bidirectional lead screw (15). The output end of the servo motor (17) is fixedly connected to the other gear (16).

3. The laser cutting and positioning device for polytetrafluoroethylene glass fiber substrate according to claim 1, characterized in that: Each of the two bases (2) has a first cavity (3) and an air pump (4) is embedded on the side of each base (2) that is far apart from each other. The air inlet end of the air pump (4) is connected to the first cavity (3). A side plate (13) is fixedly installed on one side of each of the two bases (2). A limit roller (14) is rotatably connected to the top plate (6) and the side plate (13) through a fixed frame.

4. The laser cutting and positioning device for polytetrafluoroethylene glass fiber substrate according to claim 1, characterized in that: A box plate (23) is provided on one side of the box body (1). The box plate (23) is inserted into the interior of the box body (1) and slidably connected thereto. A plug rod (20) is provided on one side of the box body (1). The plug rod (20) is inserted into the interior of the box body (1) and slidably connected thereto. The plug rod (20) passes through the two bases (2) and slidably connected thereto.

5. The laser cutting and positioning device for polytetrafluoroethylene glass fiber substrate according to claim 1, characterized in that: The top of each of the two fixed blocks (5) is inlaid with a second electric telescopic rod (18), the output end of the second electric telescopic rod (18) is fixedly connected to the top plate (6), and T-shaped limiting plates (19) are fixedly installed at the bottom of the two top plates (6) and on the corresponding sides of the second electric telescopic rod (18). The T-shaped limiting plates (19) are inserted into the interior of the fixed block (5) and slidably connected to it.

6. The laser cutting and positioning device for polytetrafluoroethylene glass fiber substrate according to claim 1, characterized in that: A controller (22) is embedded on one side of the housing (1), and the controller (22) is electrically connected to the suction pump (4), the vacuum pump (9), the first electric telescopic rod (12), the servo motor (17), and the second electric telescopic rod (18).

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