A cutting knife suitable for adjusting cutting path on a cutting bed

Abstract

The present invention provides a cutting knife suitable for adjusting the cutting path of a cutting table, comprising a tool slide assembly capable of moving in a horizontal direction; a lifting assembly is arranged on the tool slide assembly, and the free end of the lifting assembly can be lifted and moved relative to the tool slide assembly; a fixed bracket is connected to the free end of the lifting assembly, and the fixed bracket can be lifted and moved following the free end of the lifting assembly; a main cutting knife is arranged on the fixed bracket, and a pressure sensor is arranged between the main cutting knife and the fixed bracket, and the pressure sensor is used to detect the pressure between the main cutting knife and the fixed bracket during the cutting process; a control unit is communicatively connected with the tool slide assembly, the lifting assembly and the pressure sensor, and the pressure value or change between the main cutting knife and the fixed bracket is detected in real time by the pressure sensor and fed back to the control unit, and the control unit adjusts the moving speed of the tool slide assembly, thereby realizing the adjustment of the cutting speed of the main cutting knife.

Description

Technical Field

[0001] The invention belongs to the technical field of cutting tables, and in particular relates to a cutting knife suitable for adjusting a cutting path on a cutting table. Background Art

[0002] A cutting table is a device used in garment production to cut fabric into pieces. Fabric is laid on the table's work surface, where the cutting blades follow the outline of a template. Typically, different fabrics have varying resistance when cutting. Existing technology typically uses a fixed cutting force, without adjusting the cutting speed based on the fabric. This can easily lead to burrs on the edges of the pieces, or excessive resistance, leading to excessive cutting speeds and inaccurate cutting paths, resulting in damaged pieces, wasted resources, and increased costs. Summary of the Invention

[0003] The present invention provides a cutting knife suitable for adjusting the cutting path on a cutting bed, which solves the problems in the above technical background such as burrs on the cut pieces or excessive speed during the cutting process resulting in inaccurate cutting paths, causing damage and waste of the cut pieces, and increasing production costs.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A cutting knife for adjusting a cutting path on a cutting bed, comprising:

[0006] The tool slide assembly is capable of horizontal movement;

[0007] A lifting assembly, comprising a fixed end and a free end, wherein the fixed end of the lifting assembly is disposed on the tool slide assembly, and the free end of the lifting assembly is capable of lifting and moving relative to the tool slide assembly;

[0008] A fixed bracket connected to the free end of the lifting assembly, the fixed bracket can move up and down following the free end of the lifting assembly, and the fixed bracket is provided with a mounting position;

[0009] A main cutting knife is arranged on the mounting position of the fixed bracket, and a pressure sensor is arranged between the main cutting knife and the fixed bracket, and the pressure sensor is used to detect the pressure between the main cutting knife and the fixed bracket during the cutting process;

[0010] A control unit is communicatively connected with the tool sliding assembly, the lifting assembly and the pressure sensor. The pressure value or change between the main cutting knife and the fixed bracket is detected in real time by the pressure sensor and fed back to the control unit. The control unit adjusts the moving speed of the tool sliding assembly.

[0011] In some embodiments, the fixed bracket includes a first fixed ring, a second fixed ring, a support bar, a third fixed ring and a tool connecting rod, the first fixed ring is connected to the free end of the lifting assembly, the second fixed ring is arranged below the first fixed ring and is connected to the first fixed ring through the support bar, the third fixed ring is elastically connected to the second fixed ring, and the third fixed ring is arranged in the second fixed ring, the tool connecting rod is arranged on the third fixed ring, the pressure sensor is located between the third fixed ring and the tool connecting rod, and the main cutting knife is connected to the tool connecting rod.

[0012] In some embodiments, one end of the tool connecting rod extends to the first fixing ring, and an electromagnetic adsorption structure is provided between the first fixing ring and the tool connecting rod, and the electromagnetic adsorption structure includes a plurality of electromagnetic patches arranged on the first fixing ring and corresponding metal magnetic rings arranged on the tool connecting rod; or a metal magnetic ring arranged on the first fixing ring and a plurality of electromagnetic patches correspondingly arranged on the tool connecting rod, and the plurality of electromagnetic patches are communicatively connected to the control unit.

[0013] In some embodiments, a plurality of the electromagnetic patches are evenly distributed along the outer wall of the tool connecting rod or the inner wall of the first fixing ring.

[0014] In some embodiments, a preset gap is provided between the tool connecting rod and the first fixing ring and the second fixing ring.

[0015] In some embodiments, a first through hole is provided on the tool connecting rod, and a second through hole is provided on the main cutting knife. The first through hole and the second through hole are coaxially arranged and connected. A telescopic assembly is provided on the first through hole of the tool connecting rod, and an adaptive auxiliary cutting knife is provided in the second through hole of the main cutting knife. The auxiliary cutting knife is connected to the telescopic assembly, and the telescopic assembly can drive the blade of the auxiliary cutting knife to extend out of the main cutting knife.

[0016] In some embodiments, the telescopic assembly includes a first driving member connected to the tool connecting rod and a telescopic rod connected to the first driving member, the first driving member drives the telescopic rod to perform axial extension and retraction, the free end of the telescopic rod is connected to the auxiliary cutting knife, and the first driving member is communicatively connected to the control unit.

[0017] In some embodiments, the lifting assembly includes a first rack disposed on the tool sliding assembly, a first gear engaged with the first rack, a first support rod, and a second driving member, one end of the first support rod is fixedly connected to the first fixed ring, the first gear is rotatably disposed on the other end of the first support rod, and the second driving member is disposed on the first support rod and coaxially with the first gear.

[0018] In some embodiments, the lifting assembly further includes a second support rod, a third driving member, a second gear, and a second rack symmetrically arranged on the first fixing ring with the same structure, the first support rod and the second support rod are coaxially arranged, and the first driving member and the second driving member are both communicatively connected to the control unit.

[0019] In some embodiments, the second fixing ring and the third fixing ring are arranged coplanarly, and a plurality of first springs are arranged between the second fixing ring and the third fixing ring, and the plurality of first springs are evenly distributed between the second fixing ring and the third fixing ring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This application installs a pressure sensor between the fixed bracket and the main cutting blade. During the cutting process, the pressure between the fixed bracket and the main cutting blade can be measured in real time, thereby measuring the cutting resistance. The real-time pressure measured by the sensor is then fed back to the control unit, which issues corresponding adjustment instructions to adjust the cutting speed of the main cutting blade to adapt to different materials. In addition, by setting the tool to a tiltable structure, the entire tool can be adaptively cut at corners, ensuring cutting accuracy at corners and preventing cutting offset. At the same time, a retractable and smaller auxiliary cutting blade is provided. The smaller size of the auxiliary cutting blade makes it more flexible in corners, facilitating cutting at corners or right angles, and ensuring overall cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a cutting knife suitable for adjusting the cutting path of a cutting bed according to the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of a cutting knife suitable for adjusting the cutting path of a cutting bed according to the present invention;

[0024] Figure 3 This is a schematic structural diagram of an internal auxiliary cutting knife of a cutting knife suitable for adjusting the cutting path of a cutting bed according to the present invention;

[0025] Figure 4This is a schematic structural diagram of a cutter suitable for adjusting the cutting path on a cutting bed according to the present invention, in which an internal auxiliary cutting knife extends outward from a main cutting knife;

[0026] Figure 5 This is a schematic diagram of the connection structure of a second fixing ring and a third fixing ring of a cutting knife suitable for adjusting the cutting path of a cutting bed according to the present invention;

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of a first fixing ring of a cutting knife suitable for adjusting a cutting path on a cutting bed according to the present invention;

[0028] Figure 7 yes Figure 1 Enlarged structural diagram at point A in the middle. DETAILED DESCRIPTION

[0029] The present application is further described in detail below with reference to the accompanying drawings. In the description of this embodiment, unless otherwise specified, the terms "left" and "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the product structure referred to in this application must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] In one embodiment, Figure 1 and Figure 2 As shown, a cutting knife suitable for adjusting the cutting path of a cutting bed provided by the present invention includes a tool slide assembly 1, a lifting assembly, a fixed bracket, a main cutting knife 9 and a control unit. The tool slide assembly 1 can move in the horizontal direction, that is, combined with the X-axis moving module and the Y-axis moving module in the prior art, it can realize horizontal linear movement and bending movement; the lifting assembly includes a fixed end and a free end, and a clearance space is provided on the tool slide assembly 1 for the lifting assembly to move up and down. In this embodiment, the fixed end of the lifting assembly is fixedly set on the mounting position of the tool slide assembly 1, and the free end of the lifting assembly can move up and down relative to the fixed end; the fixed bracket is fixed to the free end of the lifting assembly and can move up and down synchronously with the free end of the lifting assembly. A mounting position is provided on the fixed bracket for installing the main cutting knife 9, wherein, as shown in FIG. Figure 5As shown, a pressure sensor 13 is installed between the main cutting blade 9 and the fixed bracket. The pressure sensor 13 is mainly used to measure the real-time pressure between the main cutting blade 9 and the fixed bracket during the cutting process, and to determine the current resistance of the main cutting blade 9 based on the pressure. The control unit is in communication with the aforementioned tool slide assembly 1, the lifting assembly, and the pressure sensor 13. The pressure value between the fixed bracket and the main cutting blade 9 detected in real time is fed back to the control unit via the pressure sensor 13. The control unit determines the resistance of the current material to the main cutting blade 9 based on the current pressure value measured by the pressure sensor 13. The control unit issues an adjustment command, which is fed back to the tool slide assembly 1 to adjust its speed. The speed at which the tool slide assembly 1 drives the main cutting blade 9 can overcome the current material resistance value and successfully complete the cutting. Because different materials have different cutting resistance to the main cutting blade 9, the greater the resistance of the cutting material to the main cutting blade 9, the faster the main cutting blade 9 needs to move to overcome the current material resistance.

[0031] In the present application, a pressure sensor 13 is provided to detect the pressure between the main cutting knife 9 and the fixed bracket in real time, and further obtain the resistance value of the current cutting material to the main cutting knife 9, and feed back the real-time measured pressure to the control unit. The control unit then controls the moving speed of the tool sliding assembly 1 so that the moving speed of the main cutting knife 9 can just overcome the current material cutting resistance and will not make the speed of the main cutting knife 9 too fast to cause cutting deviation problems, or the main cutting knife 9 moves too slowly to fail to cut the material normally and smoothly.

[0032] In one embodiment, again referring to Figure 1The fixed bracket includes a first fixing ring 2, a second fixing ring 10, a support bar 201, a third fixing ring 11, and a tool connecting rod 7. The first fixing ring 2 is fixedly disposed at the free end of the lifting assembly, and the second fixing ring 10 is connected and fixed to the first fixing ring 2 via the support bar 201 and is disposed below the first fixing ring 2. In this embodiment, there are three support bars 201, which are evenly disposed between the first fixing ring 2 and the second fixing ring 10. Optionally, a plurality of support bars 201 may be provided, such as four, five, or more. In this embodiment, the support bar 201 only serves to connect the first fixing ring 2 and the second fixing ring 10. The number of support bars 201 is not limited by the present invention. Optionally, the first fixing ring 2, the second fixing ring 10, and the support bar 201 may be an integral structure, that is, the first fixing ring 2, the second fixing ring 10, and the support bar 201 form a cylindrical barrel, a conical barrel structure, or a prism-shaped barrel structure. In order to facilitate the main cutting knife 9 to tilt at a certain angle and make the main cutting knife 9 suitable for corner cutting, in this embodiment, an elastic connection support is adopted between the third fixing ring 11 and the second fixing ring 10. The third fixing ring 11 is located inside the second fixing ring 10. The second fixing ring 10 and the third fixing ring 11 are arranged on the same horizontal plane, and the tool connecting rod 7 is arranged on the third fixing ring 11. Specifically, the third fixing ring 11 and the second fixing ring 10 are cylindrical structures. The diameter of the third fixing ring 11 is smaller than the diameter of the second fixing ring 10, that is, a certain gap is provided between the second fixing ring 10 and the third fixing ring 11. An elastic material is provided in the gap to realize an elastic connection between the third fixing ring 11 and the second fixing ring 10. While realizing the main cutting knife 9 to deflect to a certain angle, it can also be reset under the action of the elastic material. As the optimal implementation method, in this embodiment, if Figure 3 As shown, four first springs 12 are used to elastically connect the second fixing ring 10 and the third fixing ring 11. Optionally, the number of first springs 12 can be 3, 5, 6, or other numbers. It is understood that the presence of the first springs 12, on the one hand, allows the main cutting blade 9 to deflect at a certain angle to meet cutting requirements, and on the other hand, the elastic force of the first springs 12 can restore the main cutting blade 9 to its initial position. Optionally, the elastic connection between the second fixing ring 10 and the third fixing ring 11 can also be achieved by providing an elastic gasket or elastic rubber material between the second fixing ring 10 and the third fixing ring 11.

[0033] In one embodiment, Figure 6As shown, one end of the tool connecting rod 7 extends to the first fixed ring 2, and an electromagnetic adsorption structure is provided between the first fixed ring 2 and the tool connecting rod 7. The electromagnetic adsorption structure is used to tilt the main cutting knife 9 at a certain angle to meet the cutting requirements. Specifically, in this embodiment, the electromagnetic adsorption structure includes a number of electromagnetic patches 14 provided on the first fixed ring 2, and a metal magnetic ring 701 correspondingly provided on the tool connecting rod 7. The electromagnetic patches 14 are communicatively connected with the control unit. In this embodiment, the number of electromagnetic patches 14 is 4, which are evenly distributed on the inner wall of the first fixed ring 2, corresponding to the number of the first springs 12. When the main cutting knife 9 needs to tilt to the left, the control unit issues a command, and the electromagnetic patches 14 located at the opposite position of the main cutting knife 9 tilting to the left are energized, as shown in FIG. Figure 1 In the direction shown, the tool connecting rod 7 approaches the electromagnetic patch 14 on the right and is adsorbed on the electromagnetic patch 14 in this direction, and the tool connecting rod 7 compresses Figure 1 The first spring 12 on the right side of the direction, the blade of the main cutting knife 9 Figure 2 When the left side is offset and needs to be reset, the control unit issues a power-off command, and the main cutting blade 9 is reset to its initial state under the reset force of the first spring 12. That is, the axial direction of the main cutting blade 9 is perpendicular to the moving plane of the tool sliding assembly 1. Optionally, the number of electromagnetic patches 14 is not limited and is at least 4, namely, the four directions of tool movement: front, back, left, and right. Optionally, the number of electromagnetic patches 14 can be 5, 8, or more, which can achieve tilting in any direction to meet cutting needs. As a variation of this embodiment, several electromagnetic patches 14 can also be set on the tool connecting rod 7, and the metal magnetic ring 701 is set on the inner wall of the first fixing ring 2. As another variation of this embodiment, the electromagnetic attraction structure can also be set between the second fixing ring 10 and the third fixing ring 11, and the first spring 12 can be set between the first fixing ring 2 and the tool connecting rod 7 corresponding to the first fixing ring 2. This can also achieve the purpose of tilting the main cutting blade 9 at a certain angle.

[0034] In one embodiment, again referring to Figure 2Because the tool connecting rod 7 needs to drive the main cutting knife 9 to be tilted at a certain angle, a preset gap is set between the tool connecting rod 7 and the structure formed by the first fixing ring 2 and the second fixing ring 10, so that the tool connecting rod 7 can swing within the structure formed by the first fixing ring 2 and the second fixing ring 10. Specifically, in this embodiment, the first fixing ring 2 and the second fixing ring 10 are both cylindrical structures, and the inner and outer diameters of the first fixing ring 2 and the second fixing ring 10 are the same. The tool connecting rod 7 is set on the axis of the cylindrical barrel formed by the first fixing ring 2 and the second fixing ring 10. The outer diameter of the tool connecting rod 7 is smaller than the inner diameter of the first fixing ring 2 and the second fixing ring 10, and the inner diameter of the third fixing ring 11 is smaller than the inner diameter of the second fixing ring 10, so as to form a preset gap, so that the tool connecting rod 7 can be moderately deflected. Furthermore, the maximum deflection angle of the tool connecting rod 7 is related to the size of the preset gap. The larger the preset gap, the larger the angle at which the tool connecting rod 7 can be deflected, and vice versa.

[0035] In one embodiment, Figure 3 and Figure 4 As shown, when performing turning cutting, the main cutting blade 9 is not flexible enough when turning due to the large size of the blade and the blade body, making turning cutting inconvenient. Therefore, a first through hole is provided on the tool connecting rod 7, and a second through hole is provided on the main cutting blade 9. The first through hole and the second through hole are arranged coaxially and connected to each other. A telescopic assembly is provided on the first through hole of the tool connecting rod 7, and an adaptive auxiliary cutting blade 8 is provided in the second through hole inside the main cutting blade 9. The auxiliary cutting blade 8 is connected to the telescopic assembly. The telescopic assembly drives the auxiliary cutting blade 8 to move telescopically within the second through hole of the main cutting blade 9, so that the auxiliary cutting blade 8 extends out of the main cutting blade 9 to perform adaptive cutting when turning. Specifically, when performing turning cutting, the control unit sends a command to the lifting assembly to raise the entire knife body. At the same time, the control unit sends a command to the telescopic assembly to make the telescopic assembly extend the auxiliary cutting knife 8 out of the main cutting knife 9 for cutting. Since the blade size of the auxiliary cutting knife 8 is smaller than the blade size of the main cutting knife 9, cutting at the turning is more flexible and smoother.

[0036] Further, refer again to Figure 3 and Figure 4The telescopic assembly includes a first drive member 6 fixedly mounted on the tool connecting rod 7 and a telescopic rod 601 connected to the first drive member 6. The first drive member 6 is in communication with a control unit and drives the telescopic rod 601 to axially telescope along the second through hole. The free end of the telescopic rod 601 is fixedly connected to the auxiliary cutting knife 8. Specifically, the control unit issues instructions. In this embodiment, the first drive member 6 is a motor, and the control unit controls the forward and reverse rotation of the motor to achieve the telescopic movement of the telescopic rod 601. Optionally, the first drive member 6 can be an electric cylinder or an electric hydraulic cylinder.

[0037] In one embodiment, Figure 7 As shown, the lifting assembly includes a first rack 4 disposed on the tool slide assembly 1, a first gear 5 meshing with the first rack 4, a first support rod 3, and a second drive member 501. One end of the first support rod 3 is fixedly connected to the first fixed ring 2, and the first gear 5 is rotatably disposed on the other end of the first support rod 3. The second drive member 501 is disposed on the first support rod 3 and is coaxially arranged with the first gear 5. In this embodiment, the second drive member 501 is a motor, which is communicatively connected to a control unit and transmits lifting and lowering commands via the control unit to achieve the lifting and lowering of the entire tool body. Furthermore, the lifting assembly also includes a symmetrically arranged second support rod, a third drive member, a second gear, and a second rack. The second support rod, the third drive member, the second gear, and the second rack have the same structure as the first support rod 3, the second drive member 501, the second gear 5, and the first rack 4, and are symmetrically arranged about the axis of the first fixed ring 2. The first support rod 3 and the second support rod are coaxially arranged. Both the second drive member 501 and the third drive member are communicatively connected to the control unit. By setting such a symmetrical structure, the entire device structure is more stable. Optionally, the meshing structure of the first gear 5 and the first rack 4 and the meshing structure of the second gear and the second rack can also be replaced by a screw slider combined with a guide slider, and the second driving member 501 and the third driving member can be an electric cylinder or an electric hydraulic cylinder structure.

[0038] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention. Such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cutting knife suitable for adjusting the cutting path on a cutting bed, characterized in that: include: The tool slide assembly is capable of horizontal movement; A lifting assembly, comprising a fixed end and a free end, wherein the fixed end of the lifting assembly is disposed on the tool slide assembly, and the free end of the lifting assembly is capable of lifting and moving relative to the tool slide assembly; A fixed bracket connected to the free end of the lifting assembly, the fixed bracket can move up and down following the free end of the lifting assembly, and the fixed bracket is provided with a mounting position; A main cutting knife is arranged on the mounting position of the fixed bracket, and a pressure sensor is arranged between the main cutting knife and the fixed bracket, and the pressure sensor is used to detect the pressure between the main cutting knife and the fixed bracket during the cutting process; a control unit, communicating with the tool slide assembly, the lifting assembly, and the pressure sensor, detecting the magnitude or change of the pressure between the main cutting knife and the fixed bracket in real time through the pressure sensor and feeding back the result to the control unit, so that the control unit adjusts the moving speed of the tool slide assembly; The fixing bracket includes a first fixing ring, a second fixing ring, a support bar, a third fixing ring and a tool connecting rod, the first fixing ring is connected to the free end of the lifting assembly, the second fixing ring is arranged below the first fixing ring and is connected to the first fixing ring through the support bar, the third fixing ring is elastically connected to the second fixing ring, and the third fixing ring is arranged inside the second fixing ring, the tool connecting rod is arranged on the third fixing ring, the pressure sensor is located between the third fixing ring and the tool connecting rod, and the main cutting knife is connected to the tool connecting rod; One end of the tool connecting rod extends to the first fixing ring, and an electromagnetic adsorption structure is provided between the first fixing ring and the tool connecting rod. The electromagnetic adsorption structure includes a plurality of electromagnetic patches arranged on the first fixing ring and corresponding metal magnetic rings arranged on the tool connecting rod; or a metal magnetic ring arranged on the first fixing ring and a plurality of electromagnetic patches correspondingly arranged on the tool connecting rod, and the plurality of electromagnetic patches are communicatively connected to the control unit.

2. A cutting knife suitable for adjusting the cutting path on a cutting bed according to claim 1, characterized in that: A plurality of electromagnetic patches are evenly distributed along the outer wall of the tool connecting rod or the inner wall of the first fixing ring.

3. The cutting knife for adjusting the cutting path on a cutting bed according to claim 1, characterized in that: A preset gap is set between the tool connecting rod and the first fixing ring and the second fixing ring.

4. The cutting knife for adjusting the cutting path on a cutting bed according to claim 3, characterized in that: The tool connecting rod is provided with a first through hole, and the main cutting knife is provided with a second through hole. The first through hole and the second through hole are coaxially arranged and connected. A telescopic assembly is provided on the first through hole of the tool connecting rod, and an adaptive auxiliary cutting knife is provided in the second through hole of the main cutting knife. The auxiliary cutting knife is connected to the telescopic assembly, and the telescopic assembly can drive the blade of the auxiliary cutting knife to extend out of the main cutting knife.

5. The cutting knife for adjusting the cutting path on a cutting bed according to claim 4, characterized in that: The telescopic assembly includes a first driving member connected to the tool connecting rod and a telescopic rod connected to the first driving member. The first driving member drives the telescopic rod to axially extend and retract. The free end of the telescopic rod is connected to the auxiliary cutting knife. The first driving member is communicatively connected to the control unit.

6. The cutting knife for adjusting the cutting path on a cutting bed according to claim 5, characterized in that: The lifting assembly includes a first rack arranged on the tool sliding assembly, a first gear meshing with the first rack, a first support rod, and a second driving member, one end of the first support rod is fixedly connected to the first fixed ring, the first gear is rotatably arranged on the other end of the first support rod, and the second driving member is arranged on the first support rod and coaxially with the first gear.

7. The cutting knife for adjusting the cutting path on a cutting bed according to claim 6, characterized in that: The lifting assembly also includes a second support rod, a third driving member, a second gear and a second rack that are symmetrically arranged on the first fixing ring with the same structure. The first support rod and the second support rod are coaxially arranged, and the first driving member and the second driving member are both communicatively connected to the control unit.

8. The cutting knife for adjusting the cutting path on a cutting bed according to claim 1, characterized in that: The second fixing ring and the third fixing ring are arranged on the same plane, a plurality of first springs are arranged between the second fixing ring and the third fixing ring, and the plurality of first springs are evenly distributed between the second fixing ring and the third fixing ring.

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