Cutting equipment for television hardware backboard production

Abstract

The invention relates to the technical field of machine tool cutting, in particular to cutting equipment for television hardware backboard production, which comprises a machine tool, and a bottom plate is arranged on the right side of the machine tool. According to the technical scheme, a braking device is arranged at the top of a bottom plate, a fixing support is fixedly installed at the top of the bottom plate, a balance support is rotatably arranged at the top of the fixing support, a hollow sliding groove is formed in the surface of the balance support, and the hollow sliding groove is arranged at the bottom of the bottom plate. A brake block is installed on the inner wall of the hollow sliding groove in a sliding mode, and after the brake block moves to the bottommost portion, the hardware back plate is completely placed on the top of the surface plate, so that a working area at the bottom of a machine tool can be vacated only through simple operation, and the cutting working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of machine tool cutting technology, and more specifically, to a cutting device for the production of metal back panels for television sets. Background Technology

[0002] A cutting device for television set back panels is an industrial piece of equipment specifically designed for cutting television set back panels. The back panel is part of the television set's casing, responsible for supporting the display screen, connecting electronic components, and providing structural strength. The main function of the cutting device is to cut the raw materials into appropriate shapes and sizes according to design requirements to meet production needs.

[0003] A search revealed a cutting device for producing metal back panels for televisions, disclosed in publication number CN 120133587 A. The device includes a work plate for placing the metal back panels and four cutting machines; a positioning mechanism for adjusting the positioning position to position metal back panels of different specifications, ensuring the metal back panels are placed correctly on the work plate; a pressing mechanism for pressing the top surface of the metal back panels placed on the work plate, and during pressing, pushing the positioning mechanism back away from the work plate so as not to affect the cutting operation; a first drive mechanism for fixing two of the cutting machines and simultaneously driving the two cutting machines to reciprocate to cut two opposite sides of the metal back panel; and a second drive mechanism for fixing the other two cutting machines and simultaneously driving the two cutting machines to reciprocate to cut the other two opposite sides of the metal back panel. This invention is applicable to metal back panels of different sizes, has fewer power components, a relatively simple structure, and low cost.

[0004] In existing technologies, the cutting of metal back plates is usually done manually. However, the time lost during manual handling affects the duration of each operation on the assembly line. This results in the inability to reach maximum capacity within a limited time during long assembly line operations, thus impacting work efficiency and production efficiency.

[0005] Based on this, the present invention discloses a cutting device for the production of metal back panels for television sets. Summary of the Invention

[0006] To address the issue raised in the background technology that manual handling by operators results in time consumption, impacting the duration of each operation in assembly line work and preventing the achievement of maximum capacity within a limited timeframe during long assembly line operations, thus affecting work efficiency and production efficiency, this technical solution provides a cutting device for television hardware back panel production. The device includes a machine tool with a base plate on its right side. Since operators need to manually remove the hardware back panel from the top of the machine tool after cutting, this consumes machine tool usage time, leading to continuous operation and downtime. This technical solution addresses this by installing a braking device on the top of the base plate, a fixed bracket fixedly mounted on the top of the base plate, a rotatable balance bracket on the top of the fixed bracket, a hollow groove on the surface of the balance bracket, a brake block slidably mounted on the inner wall of the hollow groove, a return spring between the brake block and the balance bracket, and a triangular bracket fixedly mounted on the top of the brake block, with a positioning groove on its surface.

[0007] The top of the drive device is provided with a cutting device body, an adjustable support frame is provided between the fixed bracket and the balance bracket, and the top of the base plate is provided with a protective device to ensure the braking effect of the braking device and an anti-pinch device to protect the hardware back plate so that it can be removed normally.

[0008] A flat plate is fixedly installed on the top of the balance bracket, and the flat plate is used to place the cut hardware back plate.

[0009] Based on this, since the hardware backplate occupies the working space at the bottom of the machine tool, in order to reduce the downtime during device operation, after the brake block moves to the bottom, the hardware backplate will be placed completely on top of the flat plate, so that the working area at the bottom of the machine tool can be freed up after a simple operation.

[0010] As a further improvement to this technical solution, due to the material of the metal backplate, its large mass reduces its inertia when sliding to the bottom. This results in a large inertia when the metal backplate reaches the bottom, which could cause it to collide with the device and damage the device or the metal backplate itself. Therefore, this technical solution adopts a protective device including a sliding block and a connector. The sliding block is fixedly installed at the bottom of the brake block, and the connector is fixedly installed on the surface of the sliding block. The surface of the connector has a circular rotating hole, and a rotating shaft is rotatably installed on the inner wall of the circular rotating hole. A transmission roller is fixedly installed on the top of the rotating shaft, and a square groove is opened at the bottom of the rotating shaft. A telescopic rod is rotatably installed on the inner wall of the square groove, and a ring is rotatably installed on the free end of the telescopic rod. A limit groove is opened on the top of the ring, and a through rod is slidably installed inside the limit groove. The through rod slidably passes through the inner and outer walls of the sliding block and the brake block.

[0011] The protective device also includes: a trapezoidal block, a partition, and a brake block. The trapezoidal block is slidably installed on the inner wall of the brake block. The brake block is fixedly connected to the through rod. The partition is fixedly installed on the inner wall of the brake block. The brake block is slidably installed on the inner wall of the brake block.

[0012] A spring is provided between the connecting block and the partition, and a fixing bolt is provided between the connecting member and the sliding block. The fixing bolt is used to fix the connecting member.

[0013] A torsion spring is provided between the telescopic rod and the square groove, and the circumferential surface of the transmission roller is in contact with the surface of the balance bracket.

[0014] Because the metal backplate generates significant inertia when fully moved to the bottom, it may collide with the device, potentially damaging either the device or the metal backplate itself. To ensure normal operation, the movement speed of the brake block is limited, so that the device automatically brakes if the metal backplate moves too fast while sliding towards the bottom.

[0015] As a further improvement to this technical solution, since the return spring is in a stored state, when the hardware back plate is being removed, the release of the stored force by the return spring at the instant the hardware back plate is no longer in contact with the triangular bracket will cause the device brake block to quickly reset, making it impossible for the operator to remove it normally, or even causing injury. Therefore, the present invention adopts an anti-pinch device including: an air cylinder and a connecting rod. The connecting rod is fixedly installed between the sliding blocks. The air cylinder is fixedly installed on the top of the base plate. The circumferential surface of the air cylinder has multiple air outlets. A sealing plate is slidably installed on the inner wall of the air cylinder. A fixing rod is fixedly installed on the side of the sealing plate away from the air outlets. A rotating rod is rotatably installed on the end of the fixing rod away from the sealing plate.

[0016] The anti-pinch device further includes: a hollow box, an L-shaped rod, a square block, and a circular long rod. The hollow box is fixedly installed on the circumferential surface of the air cylinder, the L-shaped rod is slidably installed on the inner wall of the hollow box, the square block is fixedly installed on the top of the L-shaped rod, and a circular long rod is fixedly installed on the side of the sealing plate near the square block.

[0017] A second spring is installed between the hollow box and the L-shaped rod, and the L-shaped rod is in contact with the rotating rod.

[0018] A second torsion spring is installed between the rotating rod and the fixed rod.

[0019] Because the release of the return spring would cause the device's brake block to reset rapidly, making it impossible for the operator to pick it up properly or even causing injury, the brake block is designed to prevent rapid reset by the return spring, giving the operator ample time to pick it up and operate it for the safety of the operator.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In this cutting equipment for producing metal back panels for televisions, the metal back panel slides to the right under its own weight. As the metal back panel moves, it comes into contact with the triangular bracket. The movement of the metal back panel causes the triangular bracket and the brake block to slide to the bottom. The sliding of the brake block causes the return spring to stretch and store force. After the brake block moves to the bottom, the metal back panel will be completely placed on the top of the flat plate. This allows the working area at the bottom of the machine tool to be cleared after a simple operation, saving time for continued processing, reducing the downtime of the machine tool, and improving work efficiency.

[0022] 2. In this cutting equipment for producing metal back panels for televisions, when the speed of the transmission rollers is too fast and generates sufficient centrifugal force, the rotating shaft drives the telescopic rod to rotate. Affected by the centrifugal force, the telescopic rod will rise to the top when rotating around the rotating shaft. The rotation of the telescopic rod to the top drives the ring to move to the top, and the movement of the through rod drives the trapezoidal block to move to the top. The movement of the trapezoidal block will contact the support block and squeeze it. After being squeezed, the support block moves to both sides and contacts the hollow slide. Due to the sufficient friction generated by the mutual squeezing of the support block and the hollow slide, the movement speed of the brake block is limited. This allows the device to automatically brake when the metal back panel slides to the bottom if its own movement speed is too fast, preventing the metal back panel from having a large inertia when it has completely moved to the bottom, which could cause it to collide with the device and damage the device or the metal back panel itself.

[0023] 3. In this cutting equipment for producing metal back panels for televisions, the rotating rod cannot rotate away from the air cylinder. This causes the connecting rod to move, which in turn moves the fixed rod, which in turn moves the sealing plate. The moving sealing plate draws air into the air cylinder through the air outlet. Because the opening diameter of the air outlet is small, the moving speed of the sealing plate is limited. This prevents the brake block from quickly resetting by the return spring at the moment the metal back panel is removed. This allows the operator sufficient time to pick up and operate the device, preventing the brake block from quickly resetting due to the release of the stored force of the return spring, which could prevent the operator from picking it up properly or even getting injured. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the right side of the machine tool of the present invention;

[0026] Figure 3 For the present invention Figure 2Enlarged schematic diagram of section A in the middle;

[0027] Figure 4 This is a schematic diagram of the braking device structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the braking device of the present invention.

[0029] Figure 6 This is a schematic diagram of the internal structure of the brake block of the present invention;

[0030] Figure 7 This is a schematic diagram of the anti-pinch device structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the internal structure of the anti-pinch device of the present invention;

[0032] Figure 9 This is a schematic diagram of a portion of the anti-pinch device of the present invention;

[0033] The labels in the diagram represent the following: 1. Machine tool; 2. Drive unit; 3. Cutting device body; 4. Base plate; 5. Braking device; 6. Protective device; 7. Anti-pinch device; 8. Flat plate;

[0034] 51. Fixed bracket; 52. Adjustable support frame; 53. Balance bracket; 54. Hollow slide groove; 55. Brake block; 56. Return spring; 57. Triangular bracket; 58. Positioning groove;

[0035] 61. Sliding block; 62. Connecting part; 63. Rotating shaft; 64. Telescopic rod; 65. Ring; 66. Limiting groove; 67. Through rod; 68. Transmission roller; 69. Trapezoidal block; 610. Partition plate; 611. Feeding block; 612. No. 1 spring;

[0036] 71. Air cylinder; 72. Connecting rod; 73. Air outlet; 74. Sealing plate; 75. Fixing rod; 76. Rotating rod; 77. Hollow box; 78. L-shaped rod; 79. Square block; 710. Circular rod; 711. No. 2 spring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] The existing operators need to manually remove the hardware backplate from the top of machine tool 1, which will occupy the usage time of machine tool 1, causing the machine tool 1 to work continuously and create a window period, affecting work efficiency and output.

[0039] Therefore, this invention provides a cutting device for the production of metal back panels for television sets. See [link / reference] Figure 1-5 As shown, it includes a cutting device for producing metal back panels for television sets, which includes a machine tool 1, and a base plate 4 is provided on the right side of the machine tool 1. For details, see [link to details]. Figure 1 As shown, after the metal back plate is cut, the operator needs to manually remove the metal back plate from the top of the machine tool 1, which will occupy the usage time of the machine tool 1, causing the machine tool 1 to work continuously and create a downtime. The present invention adopts a braking device 5 set on the top of the base plate 4, a fixed bracket 51 fixedly installed on the top of the base plate 4, a balance bracket 53 rotating on the top of the fixed bracket 51, a hollow slide groove 54 opened on the surface of the balance bracket 53, a brake block 55 slidably installed on the inner wall of the hollow slide groove 54, a return spring 56 set between the brake block 55 and the balance bracket 53, a triangular bracket 57 fixedly installed on the top of the brake block 55, and a positioning groove 58 opened on the surface of the triangular bracket 57.

[0040] The drive device 2 is located on the top of the drive device 2, and the cutter body 3 is located on the top of the drive device 2. An adjustable support frame 52 is provided between the fixed bracket 51 and the balance bracket 53. The bottom plate 4 is provided with a protective device 6 to ensure the braking effect of the braking device 5 and an anti-pinch device 7 to protect the hardware back plate so that it can be removed normally.

[0041] A flat plate 8 is fixedly installed on the top of the balance bracket 53. The flat plate 8 is used to place the cut hardware back plate.

[0042] During operation, the cut metal back plate is pushed to the right. Due to the inclined design of the flat plate 8, the metal back plate slides to the right under its own weight. The metal back plate will contact the triangular bracket 57 as it moves. The movement of the metal back plate will cause the triangular bracket 57 and the brake block 55 to slide to the bottom. The sliding of the brake block 55 will cause the return spring 56 to stretch and store force. After the brake block 55 moves to the bottom, the metal back plate will be completely placed on the top of the flat plate 8. This allows the working area at the bottom of the machine tool 1 to be cleared after a simple operation, saving time for continued processing, reducing the downtime of the machine tool 1, and improving work efficiency.

[0043] Further, see Figure 1-6As shown, due to the material of the metal backplate, its large mass reduces its inertia when sliding to the bottom. This results in a large inertia when the backplate reaches the bottom, potentially causing it to collide with the device and damage it or the backplate itself. Therefore, this invention employs a protective device 6 comprising: a sliding block 61 and a connecting member 62. The sliding block 61 is fixedly installed at the bottom of the brake block 55, and the connecting member 62 is fixedly installed on the surface of the sliding block 61. A circular rotating hole is formed on the surface of component 62. A rotating shaft 63 is rotatably mounted on the inner wall of the circular rotating hole. A transmission roller 68 is fixedly mounted on the top of the rotating shaft 63. A square groove is formed on the bottom of the rotating shaft 63. A telescopic rod 64 is rotatably mounted on the inner wall of the square groove. A ring 65 is rotatably mounted on the free end of the telescopic rod 64. A limiting groove 66 is formed on the top of the ring 65. A through rod 67 is slidably mounted inside the limiting groove 66. The through rod 67 slidably passes through the inner and outer walls of the sliding block 61 and the brake block 55.

[0044] The protective device 6 also includes: a trapezoidal block 69, a partition 610, and a brake block 611. The trapezoidal block 69 is slidably installed on the inner wall of the brake block 55. The brake block 55 is fixedly connected to the through rod 67. The partition 610 is fixedly installed on the inner wall of the brake block 55. The brake block 611 is slidably installed on the inner wall of the brake block 55.

[0045] A spring is provided between the connecting block 611 and the partition 610, and a fixing bolt is provided between the connecting member 62 and the sliding block 61. The fixing bolt is used to fix the connecting member 62.

[0046] A torsion spring 612 is provided between the telescopic rod 64 and the square groove, and the circumferential surface of the transmission roller 68 is in contact with the surface of the balance bracket 53.

[0047] During operation, the brake block 55 slides to the bottom, causing the sliding block 61 to move to the bottom. The movement of the sliding block 61 causes the connecting piece 62 to move to the bottom. The movement of the connecting piece 62 causes the rotating shaft 63 to move. The movement of the rotating shaft 63 causes the transmission roller 68 to move. Because the transmission roller 68 is in close contact with the balance bracket 53, the transmission roller 68 will rotate due to friction. When the rotation speed of the transmission roller 68 is too fast and generates sufficient centrifugal force, the rotation of the transmission roller 68 will cause the rotating shaft 63 to rotate. The rotation of the rotating shaft 63 will cause the telescopic rod 64 to rotate. The telescopic rod 64 will rotate around the rotating shaft 63 due to centrifugal force. When in motion, it will rise to the top. The telescopic rod 64 rotates to the top, causing the ring 65 to move to the top. The movement of the ring 65 causes the through rod 67 to move to the top. The movement of the through rod 67 causes the trapezoidal block 69 to move to the top. The movement of the trapezoidal block 69 will contact the brake block 611 and squeeze the brake block 611. After being squeezed, the brake block 611 moves to both sides and contacts the hollow slide groove 54. As the brake block 611 and the hollow slide groove 54 squeeze each other and generate sufficient friction, the movement speed of the brake block 55 is limited. This allows the device to automatically brake when the hardware back plate slides to the bottom if its movement speed is too fast.

[0048] Further, see Figure 1-9 As shown, since the return spring 56 is in a charged state, when the hardware back plate is picked up, the moment the hardware back plate is no longer in contact with the triangular bracket 57, the release of the charged force of the return spring 56 will cause the device brake block 55 to quickly reset, making it impossible for the operator to pick it up normally, or even causing injury. Therefore, the present invention adopts an anti-pinch device 7 including: an air cylinder 71 and a connecting rod 72. The connecting rod 72 is fixedly installed between the sliding blocks 61. The air cylinder 71 is fixedly installed on the top of the base plate 4. The circumferential surface of the air cylinder 71 is provided with multiple air outlets 73. A sealing plate 74 is slidably installed on the inner wall of the air cylinder 71. A fixing rod 75 is fixedly installed on the side of the sealing plate 74 away from the air outlets 73. A rotating rod 76 is rotatably installed on the end of the fixing rod 75 away from the sealing plate 74.

[0049] The anti-pinch device 7 further includes: a hollow box 77, an L-shaped rod 78, a square block 79, and a circular long rod 710. The hollow box 77 is fixedly installed on the circumferential surface of the air cylinder 71. The L-shaped rod 78 is slidably installed on the inner wall of the hollow box 77. The square block 79 is fixedly installed on the top of the L-shaped rod 78. The circular long rod 710 is fixedly installed on the side of the sealing plate 74 near the square block 79.

[0050] A second spring 711 is provided between the hollow box 77 and the L-shaped rod 78, and the L-shaped rod 78 is in contact with the rotating rod 76.

[0051] A second torsion spring is installed between the rotating rod 76 and the fixed rod 75.

[0052] During operation, the sliding block 61 moves, causing the connecting rod 72 to move to the bottom. Once at the bottom, the connecting rod 72 contacts the rotating rod 76 and causes it to rotate. After the rotating rod 76 rotates, as the connecting rod 72 continues to move, it returns to its original position via the second torsion spring when it no longer contacts the rotating rod 76. When the brake block 55 returns to its original position via the return spring 56, the connecting rod 72 moves in the opposite direction and contacts the rotating rod 76. However, because the rotating rod 76 is blocked by the L-shaped rod 78, it cannot move further... Rotating away from the air cylinder 71 causes the connecting rod 72 to move, which in turn moves the rotating rod 76. The rotating rod 76 moves, which in turn moves the fixed rod 75. The fixed rod 75 moves, which in turn moves the sealing plate 74. The moving sealing plate 74 draws air into the air cylinder 71 through the air outlet 73. Because the opening diameter of the air outlet 73 is small, the moving speed of the sealing plate 74 is limited. This prevents the brake block 55 from quickly resetting via the return spring 56 when the hardware back plate is removed, giving the operator ample time to pick up and operate it.

[0053] In summary, this effectively solves the problems of existing hardware backplates requiring operators to manually remove them from the top of machine tool 1 after cutting, which occupies the machine tool 1's operating time, causing idle periods during machine tool 1's operation, and also poses safety hazards when removing the hardware backplate.

[0054] Working principle: The hardware back plate slides on top of the flat plate 8 and detaches from the working area at the bottom of the machine tool 1. The transmission roller 68 is in close contact with the balance bracket 53, causing the transmission roller 68 to rotate due to friction during movement. When the transmission roller 68 rotates too fast and generates sufficient centrifugal force, the rotation of the transmission roller 68 drives the rotating shaft 63 to rotate. The rotation of the rotating shaft 63 drives the telescopic rod 64 to rotate. Due to centrifugal force, the telescopic rod 64 will rise upwards as it rotates around the rotating shaft 63. The upward rotation of the telescopic rod 64 drives the... The ring 65 moves to the top, which in turn moves the through rod 67 to the top. The through rod 67 then moves the trapezoidal block 69 to the top. The trapezoidal block 69 moves and comes into contact with the brake block 611, squeezing it. After being squeezed, the brake block 611 moves to both sides and comes into contact with the hollow slide groove 54. As the brake block 611 and the hollow slide groove 54 squeeze each other and generate sufficient friction, the movement speed of the brake block 55 is limited. This allows the device to automatically brake when the hardware back plate slides to the bottom if its movement speed is too fast.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing metal back panels for television sets, comprising a machine tool (1) and a drive device (2), characterized in that: A base plate (4) is provided on the right side of the machine tool (1). A braking device (5) is provided on the top of the base plate (4). A fixed bracket (51) is fixedly installed on the top of the base plate (4). A balance bracket (53) is rotatably mounted on the top of the fixed bracket (51). A hollow slide groove (54) is provided on the surface of the balance bracket (53). A brake block (55) is slidably installed on the inner wall of the hollow slide groove (54). A return spring (56) is provided between the brake block (55) and the balance bracket (53). A triangular bracket (57) is fixedly installed on the top of the brake block (55). A positioning groove (58) is provided on the surface of the triangular bracket (57). The top of the drive device (2) is provided with a cutting device body (3), and an adjustment support frame (52) is provided between the fixed bracket (51) and the balance bracket (53). The top of the base plate (4) is provided with a protective device (6) to ensure the braking effect of the braking device (5) and an anti-pinch device (7) to protect the hardware back plate so that it can be removed normally.

2. The cutting equipment for producing metal back panels for televisions according to claim 1, characterized in that: A flat plate (8) is fixedly installed on the top of the balance bracket (53), and the flat plate (8) is used to place the cut hardware back plate.

3. The cutting equipment for producing metal back panels for televisions according to claim 1, characterized in that: The protective device (6) includes: a sliding block (61) and a connector (62). The sliding block (61) is fixedly installed at the bottom of the brake block (55). The connector (62) is fixedly installed on the surface of the sliding block (61). A circular rotating hole is opened on the surface of the connector (62). A rotating shaft (63) is rotatably installed on the inner wall of the circular rotating hole. A transmission roller (68) is fixedly installed on the top of the rotating shaft (63). A square groove is opened at the bottom of the rotating shaft (63). A telescopic rod (64) is rotatably installed on the inner wall of the square groove. A ring (65) is rotatably installed on the free end of the telescopic rod (64). A limiting groove (66) is opened on the top of the ring (65). A through rod (67) is slidably installed inside the limiting groove (66). The through rod (67) slidably passes through the inner and outer walls of the sliding block (61) and the brake block (55).

4. The cutting equipment for producing metal back panels for televisions according to claim 3, characterized in that: The protective device (6) further includes: a trapezoidal block (69), a partition (610), and a brake block (611). The trapezoidal block (69) is slidably installed on the inner wall of the brake block (55). The brake block (55) is fixedly connected to the through rod (67). The partition (610) is fixedly installed on the inner wall of the brake block (55). The brake block (611) is slidably installed on the inner wall of the brake block (55).

5. The cutting equipment for producing metal back panels for televisions according to claim 4, characterized in that: A spring (612) is provided between the ram block (611) and the partition plate (610), and a fixing bolt is provided between the connector (62) and the sliding block (61). The fixing bolt is used to fix the connector (62).

6. The cutting equipment for producing metal back panels for televisions according to claim 3, characterized in that: A torsion spring is provided between the telescopic rod (64) and the square groove, and the circumferential surface of the transmission roller (68) is in contact with the surface of the balance bracket (53).

7. The cutting equipment for producing metal back panels for televisions according to claim 1, characterized in that: The anti-pinch device (7) includes: an air cylinder (71) and a connecting rod (72). The connecting rod (72) is fixedly installed between the sliding blocks (61). The air cylinder (71) is fixedly installed on the top of the base plate (4). The circumferential surface of the air cylinder (71) is provided with multiple air outlets (73). A sealing plate (74) is slidably installed on the inner wall of the air cylinder (71). A fixing rod (75) is fixedly installed on the side of the sealing plate (74) away from the air outlets (73). A rotating rod (76) is rotatably installed on the end of the fixing rod (75) away from the sealing plate (74).

8. The cutting equipment for producing metal back panels for televisions according to claim 7, characterized in that: The anti-pinch device (7) further includes: a hollow box (77), an L-shaped rod (78), a square block (79), and a circular rod (710). The hollow box (77) is fixedly installed on the circumferential surface of the air cylinder (71). The L-shaped rod (78) is slidably installed on the inner wall of the hollow box (77). The square block (79) is fixedly installed on the top of the L-shaped rod (78). The circular rod (710) is fixedly installed on the side of the sealing plate (74) near the square block (79).

9. A cutting device for producing metal back panels for televisions according to claim 8, characterized in that: A second spring (711) is provided between the hollow box (77) and the L-shaped rod (78), and the L-shaped rod (78) is in contact with the rotating rod (76).

10. A cutting device for producing metal back panels for televisions according to claim 7, characterized in that: A second torsion spring is provided between the rotating rod (76) and the fixed rod (75).

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