Cutting device

Abstract

The utility model relates to the field of automobile part machining, and particularly discloses a cutting device which comprises a cutting table, an unwinding roller, a winding roller, a cutting unit and a clamping conveying unit, and the clamping conveying unit comprises a first supporting plate, a liftable second pressure adjusting plate, a first controller, a pressure sensor and a PLC processor; the first controller and the pressure sensor are electrically connected with the PLC processor, and when the pressure measured by the pressure sensor exceeds a preset numerical value range, the PLC processor controls the second pressure adjusting plate to move downwards through the first controller; when the pressure measured by the pressure sensor is smaller than a preset numerical value range, the PLC processor controls the second pressure adjusting plate to move upwards through the first controller. According to the scheme, the PLC processor controls the second pressure adjusting plate to move upwards through the first controller, so that a conveying gap formed between the second pressure adjusting plate and the first supporting plate is kept in a stable clamping or leather limiting state, and the leather is in a tensioned state and is in an undeformed state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts processing, especially relates to a cutting device. BACKGROUND

[0002] The cutting processing of automobile seat leather is a key link of automobile interior manufacturing, directly influences the appearance, comfort and durability of the seat, and its technological process involves material preparation, cutting mode selection, quality control and subsequent processing and multiple steps.

[0003] When cutting the leather by using the numerical control cutting bed, the leather generally has a certain elasticity, and then the vacuum adsorption is insufficient, the material elasticity leads to the leather displacement during cutting, and the size deviation of the finished product after cutting is easy to cause; at the same time, the edge of the synthetic leather cutting is easy to be affected by the high heat of the laser during laser cutting, and then the cutting melting edge phenomenon is easy to appear, which causes the quality defect of the edge of the finished product. INVENTION CONTENTS

[0004] In view of the problems in the prior art, the utility model provides a cutting device to solve the problems of insufficient vacuum adsorption, excessive strength or material elasticity leading to leather displacement during cutting, and easy to cause size deviation of finished product after cutting.

[0005] In order to achieve the above purpose, the basic scheme of the utility model is as follows: a cutting device, comprising a cutting table, an unwinding roller, a winding roller, a cutting unit and a clamping conveying unit, the unwinding roller, the winding roller, the cutting unit and the clamping conveying unit are all installed on the cutting table, the clamping conveying unit comprises:

[0006] A first support plate is horizontally fixedly installed on the upper surface of the cutting table;

[0007] A second pressure adjusting plate can be lifted, the second pressure adjusting plate is located between the lower surface of the first support plate and the upper surface of the cutting table, the second pressure adjusting plate is vertically opposite to the first support plate, and the second pressure adjusting plate and the first support plate form a conveying gap for the leather to pass through;

[0008] A first controller controls the lifting of the second pressure adjusting plate;

[0009] A plurality of pressure sensors can contact the leather, and the pressure sensors are located at the upper surface of the second pressure adjusting plate;

[0010] The PLC processor, the first controller and the pressure sensor are electrically connected with the PLC processor, when the pressure measured by the pressure sensor exceeds a preset value range, the PLC processor controls the second pressure adjusting plate to move downward through the first controller, when the pressure measured by the pressure sensor is less than the preset value range, the PLC processor controls the second pressure adjusting plate to move upward through the first controller.

[0011] The technical principle of the utility model is: when cutting the leather, first, install the leather roll to the unwinding roller, the free end of the leather passes through the transmission gap between the first supporting plate and the second pressure adjusting plate, and then is fixed to the winding roller after passing through the low-temperature laser cutter; the pressure sensor obtains the pressure data when the second pressure adjusting plate abuts against the leather, when the pressure measured by the pressure sensor exceeds a preset value range, the PLC processor controls the second pressure adjusting plate to move downward through the first controller, when the pressure measured by the pressure sensor is less than the preset value range, the PLC processor controls the second pressure adjusting plate to move upward through the first controller, so that the transmission gap between the second pressure adjusting plate and the first supporting plate is kept in the stable clamping or limiting leather state, and the tension state of the leather is also kept in the non-deformation state; when cutting the leather by using the cutting unit, the deformation after cutting is not easy to occur, and the dimensional deviation of the finished product is also reduced.

[0012] Further, it further comprises:

[0013] The second controller for controlling the rotating speed of the winding roller;

[0014] The third controller for controlling the rotating speed of the unwinding roller, the third controller and the second controller are electrically connected with the PLC processor, when the pressure difference measured by part of the pressure sensors and the rest of the pressure sensors is greater than a preset value range, the PLC processor controls the rotating speed of the winding roller to reduce through the second controller or the PLC processor controls the rotating speed of the winding roller to increase through the third controller.

[0015] Through the above setting, when the pressure difference measured by part of the pressure sensors and the rest of the pressure sensors is greater than a preset value range, the PLC processor controls the rotating speed of the winding roller to reduce through the second controller or the PLC processor controls the rotating speed of the winding roller to increase through the third controller, so that the tension of the leather in the cutting table range can be uniformly reduced, and the leather can further keep stable and balanced tension in the subsequent cutting process.

[0016] Further, it further comprises a limiting assembly between the unwinding roller and the clamping conveying unit; the limiting assembly comprises:

[0017] The first sliding rail is fixedly installed on the cutting table, and the axis of the first sliding rail is perpendicular to the conveying direction of the leather;

[0018] Two limiting blocks which can be located at the edges of the leather, the limiting blocks are adjustably installed on the first sliding rail, and a through slot for embedding the edge of the leather is arranged on the lower surface of the limiting block close to the edge of the other limiting block;

[0019] A baffle is fixedly installed on the cutting table and opposite to the lower surface of the limiting block, and the axis of the baffle is perpendicular to the conveying direction of the leather.

[0020] Through the above arrangement, the free end of the leather passes between the through slot of the limiting block and the baffle, the limiting block slides horizontally along the first sliding rail, so that the edge of the leather is embedded into the through slot of the limiting block, and the baffle and the limiting block can limit the edge of the leather and adapt to different widths of the leather.

[0021] Further, the cutting unit comprises:

[0022] A horizontal sliding support frame is installed on the cutting table;

[0023] A low-temperature laser cutter is installed on the horizontal sliding support frame, and the low-temperature laser cutter is opposite to the upper surface of the cutting table.

[0024] Through the above arrangement, the horizontal sliding support frame can drive and support the low-temperature laser cutter to move on the cutting table, so that the movement of the low-temperature laser cutter is adapted to the structure of the finished product after cutting, and the precise cutting processing of the leather is realized.

[0025] Further, the cutting unit further comprises:

[0026] A protective gas filling shell is sleeved on the laser emitting end of the low-temperature laser cutter, and the lower end of the protective gas filling shell can be in contact with the surface of the leather;

[0027] A protective gas delivery pipe is in communication with the protective gas filling shell.

[0028] Through the above arrangement, when the leather is cut, the protective gas delivery pipe inputs protective gas into the protective gas filling shell, further reduces the probability of cutting edge of the finished product, and improves the cutting quality.

[0029] Further, a pad plate is horizontally laid on the upper surface of the cutting table.

[0030] Through the above arrangement, the pad plate is convenient for supporting the leather during cutting, and also ensures that the bottom layer of the leather is completely cut.

[0031] Further, the horizontal sliding support frame comprises:

[0032] A transverse sliding assembly for controlling the low-temperature laser cutter to slide along the conveying direction of the leather is installed on the cutting table;

[0033] The longitudinal sliding assembly controls the low-temperature laser cutter to slide vertically to the leather conveying direction, and the longitudinal sliding assembly is fixedly connected with the transverse sliding assembly.

[0034] Through the above setting, the transverse sliding assembly and the longitudinal sliding assembly respectively control the low-temperature laser cutter to move transversely and longitudinally along the upper surface of the cutting table, so that the movement of the low-temperature laser cutter is accurate and the position control is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure schematic view of the cutting device in the axial direction of the embodiment of the utility model.

[0036] Figure 2 It is a longitudinal partial sectional view of the protective gas filling shell in the cutting device of the embodiment of the utility model.

[0037] Figure 3 It is a structure schematic view of the cutting device in the axial direction of the embodiment of the utility model. Figure 1 It is an enlarged view of A in the embodiment of the utility model.

[0038] Figure 4 It is a structure schematic view of the cutting device in the axial direction of the embodiment of the utility model. Figure 1 It is a partial front view of the clamping conveying unit.

[0039] In the above drawings: cutting table 10, base plate 101, unwinding roller 201, winding roller 202, first support plate 301, second pressure adjusting plate 302, air pressure lifting rod 401, air pressure pump 402, first sliding rail 501, limiting block 502, through groove 503, baffle 504, transverse sliding assembly 601, longitudinal sliding assembly 602, low-temperature laser cutter 603, protective gas filling shell 604, protective gas conveying pipe 605, leather 70. DETAILED DESCRIPTION

[0040] The technical scheme in the utility model will be further explained in connection with the drawings and the embodiments.

[0041] The embodiment is basically as Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model discloses a cutting device, including cutting table 10, unwinding roller 201, winding roller 202, cutting unit, clamping conveying unit and control unit, unwinding roller 201, winding roller 202, cutting unit and clamping conveying unit are all installed on cutting table 10, unwinding roller 201 is horizontally installed at the right end of cutting table 10, winding roller 202 is horizontally installed at the right end of cutting table 10, and the axis of unwinding roller 201 and winding roller 202 are all parallel to the edge of cutting table 10, the upper surface of cutting table 10 is horizontally paved with backing plate 101, and the backing plate 101 is convenient for supporting leather 70 in the cutting process, and also ensures the bottom layer cutting of leather 70 to be thorough.

[0042] As Figure 1 , Figure 3 and Figure 4 indicated, the clamping conveying unit includes a first support plate 301, a second pressure adjusting plate 302, an air pressure lifting rod 401 for controlling the lifting of the second pressure adjusting plate 302, an air pressure pump 402 for controlling the lifting of the air pressure lifting rod 401, and a limiting assembly located between the unwinding roller 201 and the clamping conveying unit. Figure 4 As indicated, the first support plate 301 is horizontally fixedly installed on the upper surface of the cutting table 10 by bolts; the second pressure adjusting plate 302 is located between the lower surface of the first support plate 301 and the upper surface of the cutting table 10, the second pressure adjusting plate 302 is vertically opposite to the first support plate 301, and a conveying gap for the leather 70 to pass through is formed between the second pressure adjusting plate 302 and the first support plate 301; the air pressure pump 402 is fixedly connected with the side of the cutting table 10 by bolts and mounting frames, the upper end of the air pressure lifting rod 401 is fixedly connected with the second pressure adjusting plate 302 by bolts, and the two air pressure pumps 402 and the two air pressure lifting rods 401 are located on the left and right ends of the second pressure adjusting plate 302.

[0043] Figure 1 and Figure 3 indicated, the limiting assembly includes a first sliding rail 501, two limiting blocks 502 that can be located at the edges of the leather 70, and a baffle 504, the first sliding rail 501 is fixedly installed on the cutting table 10 by bolts, and the axis of the first sliding rail 501 is perpendicular to the conveying direction of the leather 70; the limiting blocks 502 are adjustably installed on the first sliding rail 501, and a through groove 503 for the edge of the leather 70 to be embedded is arranged on the lower surface of the limiting block 502 close to the edge of the other limiting block 502; the baffle 504 is fixedly installed on the cutting table 10 and opposite to the lower surface of the limiting block 502, and the axis of the baffle 504 is perpendicular to the conveying direction of the leather 70.

[0044] As Figure 1 and Figure 2As shown, the cutting unit includes a horizontal sliding support frame, a low-temperature laser cutter 603, a protective gas filling shell 604, and a protective gas delivery pipe 605. The low-temperature laser cutter 603 is a wind-cooled fiber laser cutter. The horizontal sliding support frame includes a transverse sliding assembly 601 that controls the sliding of the low-temperature laser cutter 603 along the conveying direction of the leather 70 and a longitudinal sliding assembly 602 that controls the sliding of the low-temperature laser cutter 603 perpendicular to the conveying direction of the leather 70. The transverse sliding assembly 601 is installed on the cutting table 10. The longitudinal sliding assembly 602 is fixedly connected with the transverse sliding assembly 601. The low-temperature laser cutter 603 is installed on the longitudinal sliding assembly 602 and is opposite to the upper surface of the cutting table 10. Figure 2 As shown, the protective gas filling shell 604 is sleeved on the laser emission end of the low-temperature laser cutter 603. The lower end of the protective gas filling shell 604 can be in contact with the surface of the leather 70. The protective gas delivery pipe 605 is in communication with the protective gas filling shell 604.

[0045] Meanwhile, the control unit includes a first controller that controls the lifting of the second pressure adjusting plate 302, a plurality of pressure sensors that can be in contact with the leather 70, a PLC processor, a second controller that controls the rotating speed of the winding roller 202, and a third controller that controls the rotating speed of the unwinding roller 201. The pressure sensors are located at the upper surface of the second pressure adjusting plate 302. The first controller, the pressure sensors, the third controller, and the second controller are electrically connected with the PLC processor. When the pressure measured by the pressure sensors exceeds the preset value range, the PLC processor controls the second pressure adjusting plate 302 to move downward through the first controller. When the pressure measured by the pressure sensors is less than the preset value range, the PLC processor controls the second pressure adjusting plate 302 to move upward through the first controller. When the pressure difference between a part of the pressure sensors and the rest of the pressure sensors is greater than the preset value range, the PLC processor controls the rotating speed of the winding roller 202 to decrease through the second controller or controls the rotating speed of the winding roller 202 to increase through the third controller.

[0046] In use, the cutting device in this embodiment first installs the leather 70 in a roll to the unwinding roller 201. The free end of the leather 70 passes between the through slot 503 of the limiting block 502 and the baffle 504. The limiting block 502 slides horizontally along the first sliding rail 501, so that the side edge of the leather 70 is embedded into the through slot 503 of the limiting block 502. The baffle 504 and the limiting block 502 can limit the edge of the leather 70 and can be adapted to limit leathers 70 of different widths. Then the free end of the leather 70 passes between the conveying gap between the first support plate 301 and the second pressure adjusting plate 302. After the free end of the leather 70 passes through the low-temperature laser cutter 603, it is fixed to the winding roller 202.

[0047] Then the pressure sensor obtains the pressure data when the second pressure adjusting plate 302 is in contact with the leather 70, when the pressure measured by the pressure sensor exceeds the preset value range, the PLC processor controls the second pressure adjusting plate 302 to move down through the first controller; when the pressure measured by the pressure sensor is less than the preset value range, the PLC processor controls the second pressure adjusting plate 302 to move up through the first controller, so that the conveying gap formed between the second pressure adjusting plate 302 and the first supporting plate 301 is kept in a stable clamping or limiting state of the leather 70; at the same time, when the pressure difference between the part of the pressure sensor and the rest of the pressure sensor is greater than the preset value range, the PLC processor controls the winding roller 202 to reduce the rotating speed through the second controller or the PLC processor controls the winding roller 202 to increase the rotating speed through the third controller, so that the tension of the leather 70 in the cutting table 10 can be uniformly reduced, so that the leather 70 can keep stable and balanced tension in the subsequent cutting process, thereby reducing the deformation after cutting and reducing the size deviation of the finished product.

[0048] When cutting, the transverse sliding assembly 601 and the longitudinal sliding assembly 602 control the low-temperature laser cutter 603 to move transversely and longitudinally along the upper surface of the cutting table 10 respectively, when moving to the cutting position, the low-temperature laser cutter 603 is started, and the protective gas delivery pipe 605 fills the protective gas (nitrogen) into the protective gas filling shell 604 at the same time, so that the low-temperature laser cutter 603 can be cut at low temperature, which can reduce the cutting edge probability of the finished product and improve the cutting quality of the leather 70.

[0049] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A cutting device, comprising a cutting table, an unwinding roller, a winding roller, a cutting unit, and a clamping and conveying unit, wherein the unwinding roller, the winding roller, the cutting unit, and the clamping and conveying unit are all mounted on the cutting table, characterized in that, The clamping and conveying unit includes: The first support plate is horizontally fixedly installed on the upper surface of the cutting table; A liftable second pressure adjustment plate is located between the lower surface of the first support plate and the upper surface of the cutting table. The second pressure adjustment plate is vertically opposite to the first support plate, and a conveying gap is formed between the second pressure adjustment plate and the first support plate for the leather to pass through. The first controller that controls the raising and lowering of the second pressure regulating plate; Several pressure sensors that can contact leather are located on the upper surface of the second pressure regulating plate; The PLC processor is connected to both the first controller and the pressure sensor. When the pressure measured by the pressure sensor exceeds a preset value range, the PLC processor controls the second pressure regulating plate to move down through the first controller. When the pressure measured by the pressure sensor is less than the preset value range, the PLC processor controls the second pressure regulating plate to move up through the first controller.

2. The cutting device as described in claim 1, characterized in that, Also includes: A second controller that controls the rotational speed of the take-up roller; A third controller controls the speed of the unwinding roller. Both the third controller and the second controller are electrically connected to the PLC processor. When the pressure difference measured by some pressure sensors and the remaining pressure sensors is greater than a preset value range, the PLC processor controls the speed of the winding roller to decrease through the second controller or controls the speed of the winding roller to increase through the third controller.

3. The cutting device as described in claim 1, characterized in that, It also includes a limiting assembly located between the unwinding roller and the clamping and conveying unit; the limiting assembly includes: The first slide rail is fixedly installed on the cutting table, and the axis of the first slide rail is perpendicular to the leather conveying direction. Two limiting blocks are located at the edge of the leather. The limiting blocks are adjustablely mounted on the first slide rail. The lower surface of the limiting block is provided with a through groove for the edge of the leather to be embedded in near the edge of the other limiting block. A baffle is fixedly installed on the cutting table and faces the lower surface of the limiting block. The axis of the baffle is perpendicular to the conveying direction of the leather.

4. A cutting device as described in claim 3, characterized in that, The cutting unit includes: A horizontal sliding support frame is mounted on the cutting table; A cryogenic laser cutter is mounted on a horizontal sliding support frame, with the cryogenic laser cutter facing the upper surface of the cutting table.

5. A cutting device as described in claim 4, characterized in that, The cutting unit also includes: A protective gas filling shell is fitted onto the laser emitting end of a cryogenic laser cutter, and the lower end of the protective gas filling shell can contact the leather surface. A protective gas delivery pipe is connected to a protective gas filling shell.

6. A cutting device as described in any one of claims 1-5, characterized in that, A pad is horizontally laid on the upper surface of the cutting table.

7. A cutting device as described in claim 4, characterized in that, The horizontal sliding support frame includes: A transverse sliding assembly for controlling the sliding of a cryogenic laser cutter along the leather conveying direction, the transverse sliding assembly being mounted on a cutting table; A longitudinal sliding assembly controls the sliding of a cryogenic laser cutter perpendicular to the leather conveying direction. The longitudinal sliding assembly is fixedly connected to a transverse sliding assembly, and the cryogenic laser cutter is mounted on the longitudinal sliding assembly.

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