An automated cutting bed and a control method thereof

Abstract

The application provides an automatic cutting bed for cutting while walking, which comprises a cutting bed body, a material picking table, a vacuum adsorption area, a cutting head, a conveying mechanism, a primary film covering mechanism, a secondary film covering mechanism and a control unit; the primary film covers the surface of the material to assist the vacuum adsorption; the secondary film covering mechanism comprises a film recovery cylinder, a film tensioning cylinder and a compression roller; the film recovery cylinder is driven to wind and unwind; the film tensioning cylinder is elastically wound; the secondary film winds around the film recovery cylinder after passing through the compression roller; the control unit controls the conveying mechanism to synchronously convey the material, the primary film and the secondary film while the cutting head cuts the material and the primary film; the control unit controls the film recovery cylinder to synchronously wind; after the cutting and conveying of one piece of material are completed, the control unit controls the compression roller and the film recovery cylinder to be lifted, the film recovery cylinder is reversed to unwind, the film tensioning cylinder is automatically wound, and then the film recovery cylinder is reset and re-adsorbed to continue the cutting of the next piece of material. The application realizes parallel and continuous operation of cutting, conveying and film covering, avoids intermittent waiting, and improves the production efficiency and the automation level.

Description

Technical Field

[0001] This invention relates to the field of automated cutting bed technology, and in particular to an automated cutting bed that cuts while moving and its control method. Background Technology

[0002] When cutting soft materials (especially fabrics with a high coefficient of expansion and prone to deformation), automatic cutting machines typically use a vacuum adsorption system to fix the material on the worktable to ensure cutting accuracy. To enhance the vacuum adsorption effect, a primary film is often pre-covered on the fabric surface. This primary film works in conjunction with the vacuum adsorption area below to tightly press and position the fabric, facilitating cutting. During the cutting process, the cutting head not only cuts the fabric but also tears the primary film covering the fabric surface, creating slits. These slits can cause vacuum leakage, causing the fabric in the cut areas to lose negative pressure, thus affecting the stable transport of the fabric. They also reduce the adsorption force in the uncut areas, affecting the positioning and cutting accuracy of subsequent fabric sections.

[0003] To address the issue of air leakage after the primary film is cut, some automatic cutting machines are equipped with a secondary laminating mechanism. This mechanism covers the surface of the cut primary film with a secondary film to seal the cut and maintain negative pressure. In existing secondary laminating mechanisms, one end of the secondary film is typically fixed to a stationary retraction end (such as a fixed rod), while the other end is connected to a film-releasing end that moves with the cutting head. The working process is as follows: the cutting head moves from the end closest to the pick-up table to the end furthest away from the pick-up table, while the film-releasing end unwinds, covering the cut fabric and the surface of the cut primary film with the secondary film. Once the cutting head has moved to the other end, completing the cutting of the entire fabric, the laminating component is lifted to return the cutting head to the starting end. Then, the entire cut fabric is conveyed to the pick-up table via a conveying mechanism. Finally, the laminating component is pressed down to continue cutting the next fabric.

[0004] The drawback of the above-mentioned working method is that the secondary film cannot be simultaneously deployed and retracted during the fabric conveying process. Therefore, the cutting and conveying stages cannot be carried out in parallel, and only an intermittent operation mode of "cutting one bed and conveying one bed" can be adopted. That is, the fabric can only be conveyed after the entire bed of fabric has been cut and the cutting head has been reset. This mode results in a long non-productive waiting time on the cutting bed, low equipment utilization, and difficulty in meeting the needs of efficient continuous production.

[0005] Therefore, it is necessary to provide an automated cutting bed that can achieve continuous operation of cutting, conveying, and coating simultaneously to improve overall work efficiency. Summary of the Invention

[0006] This invention proposes an automated cutting bed and its control method that allows cutting while moving, which solves the problem that existing automated cutting beds can only adopt an intermittent operation mode of "cutting one bed and transporting one bed", resulting in low production efficiency.

[0007] The technical solution of this invention is implemented as follows:

[0008] The first aspect of the present invention provides an automated cutting bed for simultaneous cutting and movement, comprising a cutting bed body, a pick-up table and a vacuum adsorption area disposed on the cutting bed body, a cutting head for cutting the fabric in the vacuum adsorption area, a conveying mechanism for conveying the fabric in the vacuum adsorption area to the pick-up table, a primary coating mechanism, a secondary coating mechanism, and a control unit; wherein the primary coating mechanism is used to cover the surface of the fabric in the vacuum adsorption area with an initial primary film to cooperate with vacuum adsorption to press and position the fabric.

[0009] The secondary film coating mechanism includes a film recovery cylinder, a film tensioning cylinder, and a pressure roller. The film recovery cylinder is mounted above the material pick-up table via a bracket. The film tensioning cylinder is mounted on the crossbeam of the cutting head. The pressure roller is mounted on the crossbeam of the cutting head via a lifting assembly. The secondary film released from the film tensioning cylinder passes around the pressure roller and then wraps around the film recovery cylinder.

[0010] The control unit is configured to:

[0011] While the cutting head cuts the fabric and primary film in the vacuum adsorption area, the control conveying mechanism simultaneously transports the cut fabric and its primary and secondary films to the pick-up table, and controls the film recycling cylinder to simultaneously wind up to tension the secondary film.

[0012] After all the fabric in a bed has been cut and conveyed, the vacuum adsorption area is closed, the pressure roller is raised, and the film recovery cylinder is reversed to unwind, so that the film tensioning cylinder automatically winds up the secondary film under the action of the elastic winding function; after the film recovery cylinder has finished unwinding, the pressure roller is pressed down and the vacuum adsorption area is reopened to continue the continuous cutting of the next fabric.

[0013] Specifically, the support includes a first support fixed on both sides of the picking platform, a first driving component installed on the top of the first support, the output end of the first driving component connected to a second support, and the membrane recycling cylinder installed on the second support; the first support is also provided with a vertical guide rod, and the second support is provided with a linear bearing, the linear bearing being slidably sleeved on the guide rod.

[0014] Furthermore, a second drive component is installed on the second bracket, and the output end of the second drive component is connected to the cylinder shaft of the membrane recovery cylinder, thereby driving the membrane recovery cylinder to rotate.

[0015] Specifically, the membrane tensioning cylinder is provided with an elastic element inside. The two ends of the elastic element are fixedly connected to the cylinder body and the cylinder shaft of the membrane tensioning cylinder, respectively. The elastic element is used to store elastic potential energy when the membrane tensioning cylinder is unwound and to drive the membrane tensioning cylinder to automatically rewind after the external force is released.

[0016] Specifically, the lifting assembly includes a third drive component, a swing arm, and a bearing seat. One end of the swing arm is mounted on a support via the bearing seat, and the other end is rotatably connected to the roller of the pressure roller. The output end of the third drive component is connected to the end of the swing arm that extends out of the bearing seat. The third drive component drives the swing arm to swing, thereby causing the pressure roller to lift up or press down during rotation.

[0017] A second aspect of the present invention provides a control method for an automated cutting bed that operates while cutting, comprising the following steps of executing an automated cutting mode:

[0018] Control the opening of the vacuum adsorption area and control the pressure roller and film recovery cylinder to press down, so that the secondary film between the pressure roller and the film recovery cylinder is close to and covers the primary film on the fabric surface;

[0019] The cutting head is controlled to move along a two-dimensional plane to cut the fabric in the vacuum adsorption area and the primary film covering it.

[0020] The synchronous control conveying mechanism transports the fabric and the primary and secondary films covering it to the picking platform. During the conveying process, the secondary film pulls the film tensioning cylinder to unwind.

[0021] The film recovery cylinder is synchronously controlled to wind up the secondary film, keeping the winding speed of the film recovery cylinder synchronized with the conveying speed of the conveying mechanism.

[0022] Specifically, the control method further includes a film changing operation performed after all the fabric has been cut and conveyed. The film changing operation includes the following steps:

[0023] Stop the cutting head and conveying mechanism, and shut down the vacuum adsorption area;

[0024] Control the pressure roller to lift up the secondary film, so that the secondary film is separated from the primary film on the surface of the fabric being cut;

[0025] Control the membrane recovery cylinder to reverse and unwind, so that the membrane tensioning cylinder can automatically wind up the secondary film under the action of the elastic winding function;

[0026] After the film recycling cylinder has finished unwinding, the pressure roller is pressed down to open the vacuum adsorption area, so as to continue the continuous cutting of the next fabric.

[0027] Specifically, during the initial cutting, the cutting head is located at one end of the vacuum adsorption area near the pick-up table, and the fixed cutting mode is executed at this time, and the conveying mechanism does not move; after the cutting head moves away from the pick-up table to the middle area of ​​the cutting bed, so that a sufficient working distance is reserved between the cutting head and the pick-up table, the on-the-go cutting mode is started.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a primary laminating mechanism and a secondary laminating mechanism, and under the coordinated control of the control unit, the present invention can simultaneously start the conveying mechanism to transport the cut fabric, along with the torn primary film and the secondary film covering it, to the picking table while the cutting head is cutting the fabric and the primary film. At the same time, the film recovery cylinder is controlled to actively rewind to maintain the tension of the secondary film, realizing the parallel and continuous operation of cutting, conveying and laminating, effectively avoiding the waiting time caused by the traditional intermittent mode of "cutting one bed and conveying one bed". After one bed of fabric is cut and conveyed, the film changing operations such as lifting the pressure roller, reversing the film recovery cylinder to unwind, elastically rewinding the film tensioning cylinder and resetting can be automatically completed. Continuous operation can be quickly restored without manual intervention, thereby significantly improving the production continuity and automation level of the cutting bed. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of an automated cutting bed that cuts while moving, according to the present invention.

[0031] Figure 2 This is a schematic diagram of the secondary coating mechanism in an embodiment of the present invention.

[0032] Figure 3 This is a side cross-sectional view of the secondary coating mechanism in the film-changing state in an embodiment of the present invention.

[0033] Figure 4 This is a side cross-sectional view of the secondary coating mechanism in the cutting state in an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the support structure in an embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram of the installation structure of the pressure roller in an embodiment of the present invention.

[0036] In the diagram: 1. Pick-up platform; 2. Vacuum adsorption area; 3. Cutting head; 4. Membrane recovery cylinder; 5. Membrane tensioning cylinder; 6. Pressure roller; 7. Support; 8. Crossbeam; 9. Secondary membrane; 10. First support; 11. First drive component; 12. Second support; 13. Guide rod; 14. Second drive component; 15. Third drive component; 16. Swing arm; 17. Bearing seat; 18. Support. Detailed Implementation

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0038] Reference Figures 1 to 6 The first aspect of the present invention provides an automated cutting bed for simultaneous cutting and movement, comprising a cutting bed body, a pick-up table 1 and a vacuum adsorption area 2 disposed on the cutting bed body, a cutting head 3 for cutting the fabric in the vacuum adsorption area 2, a conveying mechanism (not shown in the figure) for conveying the fabric in the vacuum adsorption area 2 to the pick-up table 1, a primary coating mechanism (not shown in the figure), a secondary coating mechanism, and a control unit; the primary coating mechanism is used to cover the surface of the fabric in the vacuum adsorption area 2 with an initial primary film to cooperate with vacuum adsorption to press and position the fabric.

[0039] The primary coating mechanism employs existing conventional automatic coating devices, such as a film-laying roller at the beginning of the cutting bed, which continuously spreads the primary film onto the fabric surface as it enters the vacuum adsorption area 2. The primary film, combined with vacuum adsorption, ensures the fabric remains flat and stable during the cutting process, guaranteeing cutting accuracy.

[0040] The secondary coating mechanism includes a film recovery cylinder 4, a film tensioning cylinder 5, and a pressure roller 6. The film recovery cylinder 4 is installed above the material pick-up table 1 via a bracket 7. The film tensioning cylinder 5 is installed on the crossbeam 8 of the cutting head 3. The pressure roller 6 is installed on the crossbeam 8 of the cutting head 3 via a lifting assembly. The secondary film 9 released from the film tensioning cylinder 5 passes around the pressure roller 6 and then wraps around the film recovery cylinder 4.

[0041] The function of the secondary laminating mechanism is to cover the cut primary film (secondary film 9) with a new film during the cutting and conveying process, sealing the cut seam and preventing vacuum leakage. The film recycling cylinder 4 has active unwinding and winding capabilities, controlled by an independent drive motor, and can rotate in both directions. The film tensioning cylinder 5 has an elastic element inside, which can passively unwind and automatically rewind after the external force is released, without the need for additional power. The pressure roller 6 is used to press the secondary film 9 onto the fabric surface to ensure a tight fit. The three work together to achieve continuous supply and recycling of the secondary film 9.

[0042] The control unit is configured to:

[0043] While the cutting head 3 cuts the fabric and primary film in the vacuum adsorption area 2, the control conveying mechanism simultaneously conveys the cut fabric and its primary and secondary films 9 to the picking table 1, and controls the film recycling cylinder 4 to simultaneously rewind to tension the secondary film 9.

[0044] The control unit is a PLC or industrial computer, which is electrically connected to the cutting head 3, the conveying mechanism, various drive components and the vacuum system. Its core control logic is: during the cutting process, the conveying mechanism does not wait for the cutting to be completed before it starts to convey the cut part. At the same time, the film recovery cylinder 4 winds up at a speed that matches the conveying speed, so that the secondary film 9 is always in a moderate tension state, neither slack nor excessively pulled. This coordinated control breaks the traditional sequence of "cut first, then convey", and realizes parallel operation.

[0045] After all the fabric has been cut and conveyed, the vacuum adsorption area 2 is closed, the pressure roller 6 is raised, and the film recovery cylinder 4 is reversed to unwind, so that the film tensioning cylinder 5 automatically winds up the secondary film 9 under the action of the elastic winding function; after the film recovery cylinder 4 has finished unwinding, the pressure roller 6 is pressed down, and the vacuum adsorption area 2 is reopened to continue the continuous cutting of the next fabric.

[0046] After a fabric is cut and fully conveyed to the pick-up table 1, a new secondary film 9 needs to be laid for the next fabric. At this time, the control unit first turns off the vacuum to prevent the secondary film 9 from being sucked up. Then, the pressure roller 6 is driven to lift up, so that the secondary film 9 is separated from the primary film on the fabric surface. Then, the film recovery cylinder 4 reverses to unwind, releasing a section of the secondary film 9. After the elastic element inside the film tensioning cylinder 5 loses external tension, it automatically reverses to rewind, rewinding the released secondary film 9 onto the film tensioning cylinder 5. After the unwinding is completed, the control pressure roller 6 is pressed down to reset, the vacuum is turned on again, and the cutting of the next fabric can begin.

[0047] In this embodiment, the cutting head 3 is mounted on the crossbeam 8, which is itself a linear module (i.e., a Y-axis moving module) that can drive the cutting head 3 to move along the width direction of the cutting bed. The crossbeam 8 is mounted on the guide rails on both sides of the cutting bed body, forming an X-axis moving module that can move along the length direction of the cutting bed. Through the linkage of the X-axis and Y-axis moving modules, the cutting head 3 can be precisely moved to any position within the vacuum adsorption area 2 for cutting, thereby meeting the processing requirements of complex cut piece shapes; the membrane tensioning cylinder 5 and the pressure roller 6 are both fixed on the crossbeam 8 and move together with the crossbeam 8 along the length direction (X direction) of the cutting bed.

[0048] Specifically, such as Figure 5As shown, the bracket 7 includes a first bracket 10 fixed on both sides of the picking platform 1. A first driving component 11 is installed on the top of the first bracket 10. The output end of the first driving component 11 is connected to a second bracket 12. The membrane recycling cylinder 4 is installed on the second bracket 12. The first bracket 10 is also provided with a vertical guide rod 13. The second bracket 12 is provided with a linear bearing. The linear bearing is slidably sleeved on the guide rod 13.

[0049] The first drive component 11 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod. When the first drive component 11 retracts, it pushes the second bracket 12 to rise along the guide rod 13, and the membrane recovery cylinder 4 is raised accordingly; when it extends, it descends and resets. The cooperation between the linear bearing and the guide rod 13 ensures the smoothness and precision of the lifting process and prevents the membrane recovery cylinder 4 from tilting.

[0050] Furthermore, such as Figure 5 As shown, a second drive component 14 is installed on the second bracket 12. The output end of the second drive component 14 is connected to the cylinder shaft of the membrane recovery cylinder 4, and the membrane recovery cylinder 4 is driven to rotate through the second drive component 14.

[0051] The second drive component 14 is a servo motor or stepper motor (with a reducer), which can precisely control the speed and direction of rotation. During normal cutting and conveying, the second drive component 14 rotates forward (in the winding direction), and its speed is adjusted in a closed loop by the control unit to keep the linear speed of the secondary film 9 consistent with the fabric conveying speed. When changing films, the second drive component 14 rotates in reverse (in the unwinding direction) to release a certain length of the secondary film 9 at a set speed.

[0052] As another preferred embodiment, the bracket 7 can also be a fixed bracket, with the membrane recycling cylinder 4 directly installed at a higher position on the fixed bracket 7. The secondary membrane 9, after being transported from the vacuum adsorption area 2 to the picking table 1, is directly tilted and connected to the membrane recycling cylinder 4. The advantage of this is that when changing the membrane after a fabric has been cut, there is no need to raise or lower the membrane recycling cylinder 4; only the pressure roller 6 needs to be raised and lowered. The structure is simpler and the efficiency is higher.

[0053] Specifically, the membrane tensioning cylinder 5 is provided with an elastic element inside. The two ends of the elastic element are fixedly connected to the cylinder body and the cylinder shaft of the membrane tensioning cylinder 5, respectively. The elastic element is used to store elastic potential energy when the membrane tensioning cylinder 5 is unwound and to drive the membrane tensioning cylinder 5 to automatically rewind after the external force is released.

[0054] The elastic element is preferably a torsion spring or a rubber band. When the cutting head 3 moves or the conveying mechanism pulls the secondary film 9, the film tensioning cylinder 5 is passively rotated to unwind, and the elastic element is twisted to store energy. When the external tension disappears (for example, when changing the film, the film recovery cylinder 4 reverses to unwind, and the secondary film 9 loosens), the elastic element restores its deformation, drives the film tensioning cylinder 5 to rotate in the opposite direction to rewind, and retracts the excess secondary film 9, thereby automatically completing the rewinding of the secondary film 9.

[0055] Specifically, such as Figure 6 As shown, the lifting assembly includes a third drive component 15, a swing arm 16 (in this embodiment, it is a "Z" shaped arm) and a bearing seat 17. One end of the swing arm 16 is mounted on the support 18 through the bearing seat 17, and the other end is rotatably connected to the roller of the pressure roller 6. The output end of the third drive component 15 is connected to the end of the swing arm 16 that extends out of the bearing seat 17. The third drive component 15 drives the swing arm 16 to swing, thereby causing the pressure roller 6 to lift up or press down during rotation.

[0056] The third drive component 15 can be a cylinder or a small motor, driving the swing arm 16 to rotate around the bearing seat 17 at a certain angle, causing the pressure roller 6 to lift or press down; the roller of the pressure roller 6 can rotate freely to reduce friction with the secondary film 9. During normal film application, the pressure roller 6 presses down to make the secondary film 9 adhere tightly to the fabric surface; during film replacement, the pressure roller 6 lifts up to separate the secondary film 9 from the fabric.

[0057] A second aspect of the present invention provides a control method for an automated cutting bed that operates while cutting, comprising the following steps of executing an automated cutting mode:

[0058] The vacuum adsorption area 2 is opened, and the pressure roller 6 and the film recovery cylinder 4 are pressed down (if a fixed bracket 7 is used, it is not necessary to raise the film recovery cylinder 4), so that the secondary film 9 between the pressure roller 6 and the film recovery cylinder 4 is close to and covers the primary film on the fabric surface; before cutting begins, the vacuum adsorption has been turned on to firmly hold the fabric and the primary film together.

[0059] The cutting head 3 is controlled to move along a two-dimensional plane to cut the fabric in the vacuum adsorption area 2 and the primary film covering it.

[0060] The cutting head 3 moves along the preset pattern of the cut piece, cutting the fabric and the primary film at the same time to form a slit. When the cutting head 3 moves, the secondary film 9 released by the film tensioning cylinder 5 behind it immediately covers the fabric and the primary film that have just been cut by the pressure roller 6, forming a seal.

[0061] The synchronous control conveying mechanism transports the fabric and the primary and secondary films 9 covering it to the picking platform 1. During the conveying process, the secondary film 9 pulls the film tensioning cylinder 5 to unwind.

[0062] The conveying mechanism moves the entire fabric (including uncut and cut portions) toward the pick-up table 1 at a constant speed; one end of the secondary film 9 is fixed to the film recycling cylinder 4, passes around the pressure roller 6 in the middle, and the other end is connected to the film tensioning cylinder 5; when the fabric moves, the secondary film 9 moves synchronously with the fabric, thereby pulling the film tensioning cylinder 5 to rotate and unwind, releasing a new secondary film 9; the elastic element of the film tensioning cylinder 5 gradually stores energy during the unwinding process.

[0063] Synchronous control of the membrane recovery cylinder 4 to wind up the secondary film 9, keeping the winding speed of the membrane recovery cylinder 4 synchronized with the conveying speed of the conveying mechanism;

[0064] The control unit detects the actual speed of the conveying mechanism and controls the second drive component 14 of the film recovery cylinder 4 to rotate and wind at the corresponding angular velocity, so that the secondary film 9 is always in a taut but not stretched state during the conveying process. The synchronization of the winding speed can be achieved through encoder feedback or speed preset.

[0065] Specifically, the control method further includes a film changing operation performed after all the fabric has been cut and conveyed. The film changing operation includes the following steps:

[0066] The cutting head 3 and the conveying mechanism are stopped, and the vacuum adsorption area 2 is closed. After all the fabric is cut and conveyed, the cutting head 3 stops moving and the conveying mechanism stops running. The vacuum adsorption area 2 is closed to prevent the secondary membrane 9 from being vacuum-adsorbed and difficult to separate.

[0067] The pressure roller 6 and the film recovery cylinder 4 are raised to lift the secondary film 9 (if a fixed bracket 7 is used, it is not necessary to lift the film recovery cylinder 4), so that the secondary film 9 is separated from the primary film on the surface of the fabric being cut; the third drive component 15 drives the pressure roller 6 to lift, and at the same time the first drive component 11 of the bracket 7 drives the film recovery cylinder 4 to rise; since the secondary film 9 is fixed on the film recovery cylinder 4 after passing around the pressure roller 6, when the film recovery cylinder 4 rises, it will also pull the secondary film 9 from the surface of the fabric to a certain height, so that the secondary film 9 is completely separated from the primary film.

[0068] The control unit commands the second drive component 14 to reverse (unwinding direction), and the membrane recovery cylinder 4 releases a section of the secondary membrane 9. At this time, the secondary membrane 9 is no longer under tension, and the elastic element inside the membrane tension cylinder 5 releases its stored energy, driving the membrane tension cylinder 5 to automatically rotate in the opposite direction to rewind, and rewinding the released secondary membrane 9 onto the membrane tension cylinder 5.

[0069] After the film recovery cylinder 4 has finished unwinding, the control roller 6 and the film recovery cylinder 4 are pressed down (if a fixed bracket 7 is used, the film recovery cylinder 4 does not need to be pressed down to reset), and the vacuum adsorption area 2 is opened to continue the continuous cutting of the next fabric. When the film recovery cylinder 4 is unwound to the preset length, the control unit stops reversing and drives the pressure roller 6 and the film recovery cylinder 4 to press down to reset, so that the secondary film 9 is close to the table surface again. The vacuum adsorption area 2 is reopened. At this time, the next fabric is ready and the cutting mode can be restarted.

[0070] Specifically, during the initial cutting, the cutting head 3 is located at one end of the vacuum adsorption area 2 near the pick-up table 1. At this time, the fixed cutting mode is executed and the conveying mechanism does not move. After the cutting head 3 moves away from the pick-up table 1 to the middle area of ​​the cutting bed, and sufficient working distance is reserved between the cutting head 3 and the pick-up table 1, the on-the-go cutting mode is started.

[0071] Since the cutting head 3 needs to move and cut in a two-dimensional plane, if it starts cutting while moving at the starting position (near the pick-up table 1), there is no space for the cutting head 3 to move backward (towards the pick-up table 1). Therefore, the present invention first adopts a fixed cutting mode: the cutting head 3 only moves to cut, the conveying mechanism is stationary, and after the cutting head 3 moves forward a certain distance (for example, to one-third to one-half of the total length of the cutting bed), so that enough space is reserved behind the cutting head 3, it automatically switches to the cutting while moving mode.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated cutting bed that cuts while moving, comprising a cutting bed body, a pick-up table (1) and a vacuum adsorption area (2) disposed on the cutting bed body, a cutting head (3) for cutting the fabric in the vacuum adsorption area (2), a conveying mechanism for conveying the fabric in the vacuum adsorption area (2) to the pick-up table (1), a primary coating mechanism, a secondary coating mechanism, and a control unit; wherein the primary coating mechanism is used to cover the surface of the fabric in the vacuum adsorption area (2) with an initial primary film to cooperate with vacuum adsorption to press and position the fabric; characterized in that, The secondary coating mechanism includes a membrane recovery cylinder (4), a membrane tensioning cylinder (5), and a pressure roller (6). The membrane recovery cylinder (4) is installed above the picking platform (1) via a bracket (7). The membrane tensioning cylinder (5) is installed on the crossbeam (8) of the cutting head (3). The pressure roller (6) is installed on the crossbeam (8) of the cutting head (3) via a lifting assembly. The secondary membrane (9) released from the membrane tensioning cylinder (5) passes around the pressure roller (6) and then wraps around the membrane recovery cylinder (4). The control unit is configured to: While the cutting head (3) cuts the fabric and primary film in the vacuum adsorption area (2), the conveying mechanism is controlled to simultaneously convey the cut fabric and the primary and secondary films (9) on it to the picking table (1), and the film recycling cylinder (4) is controlled to simultaneously rewind to tension the secondary film (9). After all the fabric has been cut and conveyed, the vacuum adsorption area (2) is closed, the pressure roller (6) is raised, and the film recovery cylinder (4) is reversed to unwind, so that the film tensioning cylinder (5) automatically winds up the secondary film (9) under the action of the elastic winding function; after the film recovery cylinder (4) has finished unwinding, the pressure roller (6) is pressed down, and the vacuum adsorption area (2) is reopened to continue the continuous cutting of the next fabric.

2. The automated cutting bed with simultaneous cutting and movement as described in claim 1, characterized in that, The bracket (7) includes a first bracket (10) fixed on both sides of the picking platform (1). A first driving component (11) is installed on the top of the first bracket (10). The output end of the first driving component (11) is connected to a second bracket (12). The membrane recycling cylinder (4) is installed on the second bracket (12). A vertical guide rod (13) is also provided on the first bracket (10). A linear bearing is provided on the second bracket (12). The linear bearing is slidably sleeved on the guide rod (13).

3. The automated cutting bed with simultaneous cutting and movement as described in claim 2, characterized in that, The second support (12) is equipped with a second drive component (14), the output end of which is connected to the shaft of the membrane recovery cylinder (4), and the membrane recovery cylinder (4) is driven to rotate by the second drive component (14).

4. The automated cutting bed with simultaneous cutting and movement as described in claim 1, characterized in that, The membrane tensioning cylinder (5) is provided with an elastic element inside. The two ends of the elastic element are fixedly connected to the cylinder body and the cylinder shaft of the membrane tensioning cylinder (5) respectively. The elastic element is used to store elastic potential energy when the membrane tensioning cylinder (5) is unwound and to drive the membrane tensioning cylinder (5) to automatically rewind after the external force is released.

5. The automated cutting bed with simultaneous cutting and movement as described in claim 1, characterized in that, The lifting assembly includes a third drive component (15), a swing arm (16), and a bearing seat (17). One end of the swing arm (16) is mounted on the supports (18) at both ends of the crossbeam (8) via the bearing seat (17), and the other end is rotatably connected to the roller of the pressure roller (6). The output end of the third drive component (15) is connected to the end of the swing arm (16) that extends out of the bearing seat (17). The third drive component (15) drives the swing arm (16) to swing, thereby causing the pressure roller (6) to lift up or press down during rotation.

6. A control method for an automated cutting bed that operates while cutting, used for automatically controlling the cutting bed according to any one of claims 1 to 5, characterized in that, This includes the following steps for implementing the cut-as-you-go mode: Control the vacuum adsorption area (2) to open, and control the pressure roller (6) and the film recovery cylinder (4) to press down, so that the secondary film (9) between the pressure roller (6) and the film recovery cylinder (4) is close to the primary film covering the fabric surface; Control the cutting head (3) to move along the two-dimensional plane to cut the fabric and the primary film covering it in the vacuum adsorption area (2); The synchronous control conveying mechanism conveys the fabric and the primary and secondary films (9) covering it to the picking platform (1). During the conveying process, the secondary film (9) pulls the film tensioning cylinder (5) to unwind. Synchronous control of the membrane recovery cylinder (4) to wind up the secondary membrane (9) and keep the winding speed of the membrane recovery cylinder (4) synchronized with the conveying speed of the conveying mechanism.

7. The control method for an automated cutting bed with simultaneous cutting and movement as described in claim 6, characterized in that, The control method also includes a film changing operation performed after all the fabric has been cut and conveyed. The film changing operation includes the following steps: Control the cutting head (3) and the conveying mechanism to stop running, and shut down the vacuum adsorption area (2); Control the pressure roller (6) to lift up the secondary film (9) so that the secondary film (9) is separated from the primary film on the surface of the fabric being cut; Control the membrane recovery cylinder (4) to reverse and unwind, so that the membrane tension cylinder (5) automatically winds up the secondary membrane (9) under the action of the elastic winding function; After the film recovery cylinder (4) has finished unwinding, control the pressure roller (6) to press down and open the vacuum adsorption area (2) to continue the continuous cutting of the next fabric.

8. The control method for an automated cutting bed with simultaneous cutting and movement as described in claim 6, characterized in that, During the initial cutting, the cutting head (3) is located at one end of the vacuum adsorption area (2) near the picking table (1). At this time, the fixed cutting mode is executed and the conveying mechanism does not move. After the cutting head (3) moves away from the picking table (1) to the middle area of ​​the cutting bed, and sufficient working distance is reserved between the cutting head (3) and the picking table (1), the on-the-go cutting mode is started.

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