A cutting device for signboard production

Abstract

The application discloses a cutting equipment for signboard production, which comprises a processing table and a disc cutter connected to one side of the processing table, and a mounting seat is fixedly connected to the bottom of the processing table, and an anti-slip mechanism is installed on the top of the mounting seat, and belongs to the technical field of signboard processing equipment; the cutting equipment for signboard production can clamp and fix a square blank from the bottom and the top of the square blank through A and B anti-deviation rings, and can further enhance the stability of the square blank between the A and B anti-deviation rings by adopting an adsorption disc to adsorb the square blank, so that the inertial force generated by the rotation of the square blank is prevented, the square blank can slide between the A and B anti-deviation rings, and the square blank can be prevented from being cut into an oval shape; meanwhile, the cutting point position inside the square blank is supported from the inside by an arc-shaped plate, a supporting column on the top of the arc-shaped plate and balls installed in the supporting column, so that the cutting regularity of the square blank is improved.

Description

Technical Field

[0001] This invention relates to the field of sign processing equipment technology, and more specifically, to a cutting device for sign production. Background Technology

[0002] Signage is a plate-shaped component that carries text, graphics, symbols, and colors to convey information and provide guidance. Circular signs on the market are commonly made of metal sheets such as aluminum or stainless steel. During processing, the entire metal sheet is first cut into square blanks, which are then processed into circular workpieces using a rotary cutting machine. During operation, the square blank is clamped in a fixture and centered, with the end face of the blank perpendicular to the axis of the rotary cutter. The rotary cutter repeatedly presses down on the top surface of the blank to create a through-cut groove. The fixture then rotates the blank, ultimately cutting the circular sign.

[0003] Based on the clamping fixture mentioned above, when the blank rotates with the fixture, it is affected by rotational inertia, and the center position of the blank is easily offset within the fixture, and the cut finished product is easily elliptical. In addition, vibration is prone to occur during the cutting of thin plates, resulting in wavy cut edges. At the same time, the pressure load from the disc cutter can cause the thin plate to warp and deform under pressure, resulting in poor size and shape regularity of the formed circular sign.

[0004] Therefore, this application proposes a cutting device for sign production to solve the above problems. Summary of the Invention

[0005] Technical problem to be solved: In view of the problems existing in the prior art, the purpose of this invention is to provide a cutting device for sign production, which solves the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a cutting device for sign production, comprising a processing table and a disc cutter rotatably connected to one side of the processing table, wherein a mounting base is fixedly connected to the bottom of the processing table, and an anti-slip mechanism is installed on the top of the mounting base; The anti-slip mechanism includes a cross fixedly connected to the top of the mounting base, a connecting plate rotatably connected inside the cross, a limiting post fixedly connected inside the connecting plate, a lifting rod slidably connected inside the limiting post, and an anti-deviation ring A rotatably connected to the top of the lifting rod. A pressure frame is rotatably connected to the side of the processing table away from the disc cutter, and a B anti-deviation ring is rotatably connected to the bottom of the pressure frame.

[0007] In a new embodiment, the anti-slip mechanism further includes an adsorption disk fixedly connected to the inner sides of the A anti-deviation ring and the B anti-deviation ring; A servo motor is fixedly connected to the outside of the pressure frame, and the output end of the servo motor is fixedly connected to the B anti-deviation ring. A positioning mechanism for fixing its pressing height is installed on the outside of the pressure frame. The top of the cross is equipped with a support mechanism to reduce the vibration amplitude at the blank cutting point.

[0008] In a new embodiment, the adsorption disk is provided in several groups, and the several groups of adsorption disks are arranged in multiple concentric circles at equal intervals.

[0009] In a new embodiment, the positioning mechanism includes a positioning arc plate symmetrically fixedly connected to one side of the processing table, and the outer side of the positioning arc plate is symmetrically provided with slots; The outer side of the pressure frame is symmetrically fixedly connected with a locking rod, the locking rod is slidably connected to the inside of the positioning arc plate, and the inside of the locking rod is slidably connected with an elastic locking block.

[0010] In a new embodiment, the support mechanism includes a retaining ring fixedly connected to the top of the cross, a base frame fixedly connected to the bottom of the retaining ring, and an arc-shaped plate fixedly connected to the outer side of the base frame, the arc-shaped plate corresponding to the position of the blade head of the disc cutter. The top of the arc-shaped plate is symmetrically and fixedly connected with support columns.

[0011] In a new embodiment, the support mechanism further includes a ball bearing installed inside the support column, wherein the highest point of the ball bearing and the outer surface of the anti-deviation ring A are located on the same plane; The bottom of the anti-deviation ring A is fixedly connected to a roller assembly, and the retaining ring is slidably disposed inside the roller assembly.

[0012] In a new embodiment, the cross is composed of four connecting rods, and the ends of the connecting rods are equipped with a centering mechanism for centering the center point of the blank plate; The centering mechanism includes gears symmetrically rotatably connected to the inner wall of the end of the connecting rod. A torsion spring is fixedly connected between the gears and the connecting rod. A rotating arm is fixedly connected between the two gears. A centering plate is fixedly connected to the outer side of the rotating arm. The centering plate is L-shaped. A clearance mechanism is installed between the gear and the mounting base to prevent the blank from rotating.

[0013] In a new embodiment, the avoidance mechanism includes a frustum block rotatably connected to the bottom of the lifting rod, a wedge-shaped column is mounted on the outer side of the frustum block, a connecting rod is fixedly connected to the outer side of the wedge-shaped column, and the connecting rod and the mounting base are slidably disposed. A U-shaped rod is fixedly connected to the tail end of the connecting rod. The U-shaped rod is installed inside the connecting rod of the cross. A rack is fixedly connected to the outside of the U-shaped rod. The rack and the connecting rod are slidably arranged. The rack and the gear mesh. The frustum block is slidably disposed inside the mounting base, and a spring is fixedly connected between the frustum block and the mounting base.

[0014] Beneficial effects: Compared with the prior art, the advantages of this invention are: 1. When the pressure frame is in the raised state, the connecting rods of the center plate and the cross are set vertically. The four sets of center plates clamp and position the four corner points of the square blank, so that the center point of the square blank and the center point of the cross disk are on the same axis, realizing the automatic centering of the square blank.

[0015] 2. When the pressure frame presses down, the rack inside the cross connecting rod slides outward, and the rack drives the rotating arm fixed by the gear to rotate, thereby causing the centering plate fixed by the rotating arm to flip until the centering plate and the connecting rod of the cross are set in parallel. The centering plate and the square blank separate. When the square blank rotates, the centering plate automatically avoids the inflection point of the square blank. In addition, the A anti-deviation ring at the top of the cross and the B anti-deviation ring on the inside of the pressure frame clamp and fix the square blank from the bottom and top sides, respectively. The suction force of the adsorption plate further improves the stability of the A and B anti-deviation rings in clamping the square blank, reduces the inertial force generated by the rotation of the blank, and prevents the blank from slipping inside the A and B anti-deviation rings. This avoids the blank after cutting being elliptical and also reduces the vibration amplitude of the blank cutting, preventing the cut edge of the blank from being wavy.

[0016] 3. During the process of the disc cutter cutting square blanks, the arc plate supports the blanks from the bottom side. The support point is located inside the cutting point of the blank, which reduces the downward pressure of the disc cutter on the blank, prevents the thin blank from warping along the cutting point, and improves the regularity of the size and shape of the round signs cut from the square blanks. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the connection structure between the processing table and the pressure frame of the present invention; Figure 3 This is a schematic diagram of the connection structure between the cross and the anti-offset ring A of the present invention; Figure 4 This is a schematic diagram of the connection structure between the lifting rod and the anti-deviation ring A of the present invention; Figure 5 This is the invention Figure 4 Enlarged structural diagram at point B in the diagram; Figure 6 This is a schematic diagram of the internal structure of the mounting base of the present invention; Figure 7 This is the invention Figure 1 Enlarged structural diagram at point A in the diagram; Figure 8 This is a schematic diagram of the connection structure between the retaining ring and the arc-shaped plate of the present invention; Figure 9 This is a schematic diagram of the connection structure between the support column and the ball bearing of the present invention; Figure 10 This is a schematic diagram of the bottom structure of the retaining ring of the present invention; Figure 11 This is a schematic diagram of the connection structure of the retaining ring and roller assembly of the present invention.

[0018] The attached diagram is labeled as follows: 1. Processing table; 2. Circular blade cutting machine; 3. Mounting base; 4. Anti-slip mechanism; 41. Cross; 42. Connecting plate; 43. Limiting post; 44. Lifting rod; 45. A anti-deviation ring; 46. Pressure frame; 47. B anti-deviation ring; 48. Adsorption plate; 5. Servo motor; 6. Positioning mechanism; 61. Positioning arc plate; 62. Slot; 63. Locking rod; 64. Elastic locking block; 7. Support mechanism; 71. Snap ring; 72. Base frame; 73. Curved plate; 74. Support column; 75. Ball bearings; 76. Roller assembly; 8. Centering mechanism; 81. Gear; 82. Torsion spring; 83. Rotary arm; 84. Centering plate; 9. Alignment mechanism; 91. Frustum block; 92. Wedge column; 93. Connecting rod; 94. U-shaped rod; 95. Rack; 96. Spring. Detailed Implementation

[0019] 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.

[0020] This application provides a cutting device for sign production, which solves the technical problems of square blank cutting, such as the square blank sliding between the processing table and the pressure frame due to the inertia generated by the rotation of the square blank, resulting in the square blank being cut into an elliptical shape, and the square blank cutting vibration causing the cutting edge to be wavy, reducing the regularity of the blank cutting.

[0021] Example 1: Please refer to Figures 1-6 A cutting device for sign production includes a processing table 1 and a disc cutter 2 rotatably connected to one side of the processing table 1. A mounting base 3 is fixedly connected to the bottom of the processing table 1, and an anti-slip mechanism 4 is installed on the top of the mounting base 3. The anti-slip mechanism 4 includes a cross 41 fixedly connected to the top of the mounting base 3. A connecting plate 42 is rotatably connected inside the cross 41. A limiting post 43 is fixedly connected inside the connecting plate 42. A lifting rod 44 is slidably connected inside the limiting post 43. An anti-deviation ring A 45 is rotatably connected to the top of the lifting rod 44. A pressure frame 46 is rotatably connected to the side of the processing table 1 away from the disc cutter 2, and a B anti-deviation ring 47 is rotatably connected to the bottom of the pressure frame 46; The cross 41 consists of four connecting rods, and the ends of the connecting rods are equipped with a centering mechanism 8 for centering the center point of the blank plate; The centering mechanism 8 includes gears 81 that are symmetrically rotatably connected to the inner wall of the end of the connecting rod. A torsion spring 82 is fixedly connected between the gears 81 and the connecting rod. A rotating arm 83 is fixedly connected between the two gears 81. A centering plate 84 is fixedly connected to the outer side of the rotating arm 83. The centering plate 84 is L-shaped. A clearance mechanism 9 is installed between gear 81 and mounting base 3 to avoid the rotation of the blank plate; The avoidance mechanism 9 includes a frustum block 91 rotatably connected to the bottom of the lifting rod 44, a wedge-shaped column 92 is installed on the outside of the frustum block 91, a connecting rod 93 is fixedly connected to the outside of the wedge column 92, and the connecting rod 93 and the mounting seat 3 are slidably arranged. A U-shaped rod 94 is fixedly connected to the tail end of the connecting rod 93. The U-shaped rod 94 is installed inside the connecting rod of the cross 41. A rack 95 is fixedly connected to the outside of the U-shaped rod 94. The rack 95 and the connecting rod are slidably arranged, and the rack 95 meshes with the gear 81. The frustum block 91 is slidably disposed inside the mounting base 3, and a spring 96 is fixedly connected between the frustum block 91 and the mounting base 3.

[0022] Specifically, the working principles of the anti-slip mechanism 4, the centering mechanism 8, and the avoidance mechanism 9 are as follows: Before the square blank is cut, the pressure frame 46 installed on the outside of the disc cutter 2 and the processing table 1 are both in a raised state. At this time, the frustum block 91 is located at the top of the inner cavity of the mounting base 3, and the spring 96 fixed between the frustum block 91 and the mounting base 3 is in a stretched state. At the same time, the connecting rods of the centering plate 84 and the cross 41 are set vertically, and the cut square blank is inserted into the four sets of centering plates 84. The four sets are respectively inserted at the four inflection points of the square blank. At the same time, the top of the square blank and the anti-deviation ring A 45 are in contact. The center point of the square blank and the center point of the connecting plate 42 installed inside the cross 41 are on the same axis, realizing the automatic positioning and centering of the square blank. At the same time, the torsion spring 82 between the gear 81 and the connecting rod of the cross 41 generates torque. After centering, the blank needs to be rotated multiple times and repeatedly pressed down by the blade of the disc cutter 2 to cut a tangent line composed of multiple cutting points on the surface of the blank until a circular blank is cut out from the center of the square blank. Each time the blade of the circular saw 2 presses down, the cutting edge of the rotating circular saw blade feeds downward, performing local cutting on the blank at the position tangent to the surface of the blank (i.e., the cutting point); after the cutting is completed, the cutter immediately lifts up, the servo motor 5 drives the blank to rotate by a preset angle, the cutter presses down again, and performs local cutting again at the new cutting point position; this process is repeated, and by the point-to-point advancement of the cutting point in the circumferential direction, the square blank is finally divided into a circular blank; However, during the rotation of the billet, the centering plate 84, which is perpendicular to the connecting rod of the cross 41, will hinder the rotation of the square billet. After the billet is placed into the four sets of centering plates 84 to complete the centering operation, the pressure frame 46 is flipped. The B anti-deviation ring 47 installed at the bottom of the pressure frame 46 presses down on the top of the square billet. As the B anti-deviation ring 47 continuously presses down on the square billet, the lifting rod 44 installed at the bottom of the A anti-deviation ring 45 slides down inside the limiting post 43. The lifting rod 44 drives the frustum block 91 installed at its bottom to slide down inside the mounting base 3. At this time, the wedge-shaped post 92 slides with the inclined surface of the frustum block 91, the spring 96 is in a compressed state, and the torque of the torsion spring 82 makes the wedge-shaped post 92 slide down. The inclined surfaces of column 92 and frustum block 91 remain in contact. The sliding frustum block 91 then drives the U-shaped rod 94 fixed by connecting rod 93 to slide outward inside the connecting rod of cross 41. The sliding U-shaped rod 94 drives the rack 95 fixed at the end to slide. The rack 95 drives the two gears 81 inside the connecting rod to rotate. At this time, the rotating arm 83 fixed between the two gears 81 drives the centering plate 84 installed on the outside to flip until the centering plate 84 and the connecting rod of cross 41 are set in parallel. At this time, the four sets of centering plates 84 and the four inflection points of the square blank separate, so that the square blank clamped between anti-deviation ring A 45 and anti-deviation ring B 47 can rotate normally. The friction generated by the contact between the anti-deviation ring A 45 and the bottom of the billet prevents the billet from slipping due to inertial force during rotation. When the rotational inertial force is too large, the billet will overcome the friction and then slip on the top of the anti-deviation ring A 45. At this time, after the pressure frame 46 presses down, the anti-deviation ring B 47 installed at the bottom of the pressure frame 46 and the anti-deviation ring A 45 at the top of the mounting base 3 clamp and fix the square billet from the top and bottom respectively. By increasing the friction on both sides of the billet at the same time, the slippage of the square billet clamped between the anti-deviation ring A 45 and the anti-deviation ring B 47 is further reduced, so that the cut circular billet is more regular and avoids the billet from slipping a large amount, which would cause the cut square billet to be elliptical. Some blanks are quite thin, and the blades of the rotating disc cutter 2 are also extremely thin. The through-cut grooves on the surface of the square blanks are narrow. The square blank scraps and round blanks need to be separated by manual pressing by the workers. The edges of the cut square and round blanks are extremely sharp, and even if the workers wear gloves, they are very likely to cut their skin. In addition, the round blanks are very hot after cutting, and are very likely to burn the skin. When the pressure frame 46 is raised, the spring 96 between the mounting base 3 and the frustum block 91 is released, and the lifting rod 44 installed on the top of the frustum block 91 is within the limit post 43. The sliding and lifting mechanism causes the torsion spring 82 to drive the centering plate 84 to rotate and reset inside the connecting rod of the cross 41. The four sets of centering plates 84 then clamp the four inflection points of the square blank. The lifting rod 44 then drives the A anti-deviation ring 45 at its top to rise, thereby lifting the circular plate cut and formed inside the square blank, achieving automatic separation of the blank and the circular plate. The operator only needs to remove the square blank waste and the circular blank from the inside of the four sets of centering plates 84 and the top of the A anti-deviation ring 45, respectively. The separation of the square blank waste and the circular blank is simple and quick.

[0023] Please see Figure 3 As a preferred embodiment of the present invention, the anti-slip mechanism 4 further includes an adsorption disk 48 fixedly connected to the inner side of the anti-deviation ring A 45 and the anti-deviation ring B 47. The adsorption disk 48 is provided in several groups, and the several groups of adsorption disks 48 are arranged in multiple concentric circles at equal intervals. A servo motor 5 is fixedly connected to the outside of the pressure frame 46, and the output end of the servo motor 5 is fixedly connected to the anti-deviation ring 47.

[0024] In the preferred embodiment of this solution, after anti-deviation ring A 45 and anti-deviation ring B 47 press down on the bottom and top surfaces of the square blank respectively, several adsorption plates 48 generate suction, further enhancing the stability of the square blank held by anti-deviation ring A 45 and anti-deviation ring B 47. At the same time, in conjunction with several sets of adsorption plates 48 arranged in a ring, the square blank held between anti-deviation ring A 45 and anti-deviation ring B 47 is adsorbed and fixed from multiple points, further reducing the amplitude of the square blank sliding between the processing table 1 and the pressure frame 46, and improving the regularity of the square blank cutting. During the cutting of the square blank, the output end of the servo motor 5 drives the fixed anti-deviation ring 47 B to rotate, thereby driving the square blank clamped between the anti-deviation ring 45 A and the anti-deviation ring 47 to rotate at a constant speed.

[0025] Example 2: Please refer to Figure 7 This embodiment provides a cutting device for sign production based on embodiment one: a positioning mechanism 6 for fixing its pressing height is installed on the outside of the pressing frame 46; The positioning mechanism 6 includes a positioning arc plate 61 symmetrically fixedly connected to one side of the processing table 1, and the outer side of the positioning arc plate 61 is symmetrically provided with a slot 62; A locking rod 63 is symmetrically fixedly connected to the outer side of the pressure frame 46. The locking rod 63 is slidably connected to the inside of the positioning arc plate 61. An elastic locking block 64 is slidably connected inside the locking rod 63.

[0026] Specifically, the working principle of the positioning mechanism 6 is as follows: During the square blank cutting process, the blade of the disc cutter comes into contact with the blank, causing the blank to vibrate. The vibrating blank will cause the pressure frame 46 to vibrate as well. The vibrating pressure frame 46 will cause the blank clamped between anti-deviation ring A 45 and anti-deviation ring B 47 to loosen. At this time, the loose blank rotates with the friction of the blade of the disc cutter 2, and at the same time, it will cause the blank to slide between anti-deviation ring A 45 and anti-deviation ring B 47, thereby reducing the regularity of the square blank after cutting. When the pressure frame 46 is raised, the locking rod 63 on the outside of the pressure frame 46 rotates together with the pressure frame 46. The locking rod 63 slides inside the positioning arc plate 61 until the elastic locking block 64 installed inside the locking rod 63 is engaged in the locking groove 62 at the highest point of the positioning arc plate 61. At this time, the raised position of the pressure frame 46 is fixed, which makes it convenient to place it between the four sets of centering plates 84 and center it before cutting the square blank. When the pressure frame 46 flips down, the elastic block 64 installed inside the clamping rod 63 engages in the groove 62 at the lowest point of the positioning arc plate 61, thereby clamping the square blank between the anti-deviation ring A 45 and the anti-deviation ring B 47. After the elastic block 64 of the clamping rod 63 engages in the groove 62 at the lowest point of the positioning arc plate 61, the downward pressing position of the pressure frame 46 is fixed, reducing the resonance amplitude between the pressure frame and the blank, thereby preventing the blank between the anti-deviation ring A 45 and the anti-deviation ring B 47 from loosening, and improving the regularity of the square blank cut into the round blank.

[0027] Please see Figures 8-11 As a preferred embodiment of the present invention, a support mechanism 7 for reducing the vibration amplitude at the cutting point of the blank is installed on the top of the cross 41. The support mechanism 7 includes a retaining ring 71 fixedly connected to the top of the cross 41. A base frame 72 is fixedly connected to the bottom of the retaining ring 71. An arc plate 73 is fixedly connected to the outside of the base frame 72. The arc plate 73 corresponds to the position of the blade head of the disc cutter 2. The top of the arc-shaped plate 73 is symmetrically and fixedly connected with support columns 74; The support mechanism 7 also includes a ball bearing 75 installed inside the support column 74, with the highest point of the ball bearing 75 and the outer surface of the anti-deviation ring A 45 located on the same plane. A roller assembly 76 is fixedly connected to the bottom of the anti-deviation ring 45, and the retaining ring 71 is slidably disposed inside the roller assembly 76.

[0028] Specifically, the working principle of the support mechanism 7 is as follows: During the blank cutting process, the square blank held between anti-deviation ring A 45 and anti-deviation ring B 47 needs to rotate one revolution. When the disc cutter 2 presses down, its cutter head touches the top surface of the square blank. Since some blanks are relatively thin, the downward pressure of the cutter head will cause the blank to warp inward along the cutting groove. After the square blank warps, the cutting point of the cutter head will be offset. As the warping amplitude of the blank along the cutting edge continues to increase, the accuracy of the circular blank cut from the square blank will become lower and lower, resulting in extremely high regularity of the circular blank, and even causing the blank to be scrapped. After the square blank is placed on top of the anti-deviation ring 45, the support column 74 on the top of the arc plate 73 and the ball bearings 75 installed inside the support column 74 contact the bottom of the blank. The arc plate 73 and the connecting plate 42 are concentrically arranged. At the same time, the two ball bearings 75 are located inside the cutting groove of the square blank, supporting the cutting point of the square blank from two points, offsetting part of the downward pressure of the disc cutter head 2, reducing the deformation amplitude of the blank along the cutting edge, and thus improving the regularity of the blank cutting edge. To prevent the ball bearings 75 inside the support column 74 from not changing their position as the anti-deviation ring A 45 rotates, resulting in no external support at the bottom of the cutting point of the blank, the retaining ring 71 at the bottom of the anti-deviation ring A 45 rotates between the roller group 76 at the top of the cross 41 during the rotation of the anti-deviation ring A 45. The retaining ring 71 connected to the base frame 72 will not interfere with the rotation of the anti-deviation ring A 45. The position of the arc plate 73 is always inside the cutting point of the square blank, supporting the square blank from two points near the cutting point, and also preventing the edge of the square blank cutting point from producing a wavy cut edge due to vibration.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutting device for sign production, comprising a processing table (1) and a disc cutter (2) rotatably connected to one side of the processing table (1), characterized in that: The bottom of the processing table (1) is fixedly connected to a mounting base (3), and the top of the mounting base (3) is equipped with an anti-slip mechanism (4). The anti-slip mechanism (4) includes a cross (41) fixedly connected to the top of the mounting base (3), a connecting plate (42) rotatably connected inside the cross (41), a limiting post (43) fixedly connected inside the connecting plate (42), a lifting rod (44) slidably connected inside the limiting post (43), and an anti-deviation ring (45) rotatably connected to the top of the lifting rod (44). The processing table (1) is rotatably connected to a pressure frame (46) on the side away from the disc cutter (2), and a B anti-deviation ring (47) is rotatably connected to the bottom of the pressure frame (46).

2. The cutting equipment for sign production according to claim 1, characterized in that: The anti-slip mechanism (4) also includes an adsorption disk (48) fixedly connected to the inner side of the A anti-deviation ring (45) and the B anti-deviation ring (47). A servo motor (5) is fixedly connected to the outside of the pressure frame (46). The output end of the servo motor (5) is fixedly connected to the B anti-deviation ring (47). A positioning mechanism (6) for fixing its downward pressure height is installed on the outside of the pressure frame (46). The top of the cross (41) is equipped with a support mechanism (7) to reduce the vibration amplitude at the blank cutting point.

3. The cutting equipment for sign production according to claim 2, characterized in that: The adsorption disk (48) is provided in several groups, and the several groups of adsorption disks (48) are arranged in multiple concentric circles at equal intervals.

4. The cutting equipment for sign production according to claim 2, characterized in that: The positioning mechanism (6) includes a positioning arc plate (61) symmetrically fixedly connected to one side of the processing table (1), and the outer side of the positioning arc plate (61) is symmetrically provided with slots (62). The outer side of the pressure frame (46) is symmetrically fixedly connected with a locking rod (63), the locking rod (63) is slidably connected to the inside of the positioning arc plate (61), and the inside of the locking rod (63) is slidably connected with an elastic locking block (64).

5. A cutting device for sign production according to claim 2, characterized in that: The support mechanism (7) includes a retaining ring (71) fixedly connected to the top of the cross (41), a base frame (72) fixedly connected to the bottom of the retaining ring (71), an arc plate (73) fixedly connected to the outside of the base frame (72), and the arc plate (73) and the blade head of the disc cutter (2) are corresponding to each other. The top of the arc-shaped plate (73) is symmetrically fixedly connected with support columns (74).

6. The cutting equipment for sign production according to claim 5, characterized in that: The support mechanism (7) also includes a ball (75) installed inside the support column (74), the highest point of the ball (75) and the outer surface of the anti-deviation ring (45) are on the same plane; The bottom of the anti-deviation ring A (45) is fixedly connected to a roller assembly (76), and the retaining ring (71) is slidably disposed inside the roller assembly (76).

7. The cutting equipment for sign production according to claim 1, characterized in that: The cross (41) is composed of four connecting rods, and the ends of the connecting rods are equipped with a centering mechanism (8) for centering the center point of the blank plate. The centering mechanism (8) includes gears (81) symmetrically rotatably connected to the inner wall of the end of the connecting rod. A torsion spring (82) is fixedly connected between the gears (81) and the connecting rod. A rotating arm (83) is fixedly connected between the two gears (81). A centering plate (84) is fixedly connected to the outer side of the rotating arm (83). The centering plate (84) is L-shaped. A clearance mechanism (9) is installed between the gear (81) and the mounting base (3) to avoid the rotation of the blank.

8. A cutting device for sign production according to claim 7, characterized in that: The avoidance mechanism (9) includes a frustum block (91) rotatably connected to the bottom of the lifting rod (44), a wedge-shaped column (92) is installed on the outside of the frustum block (91), a connecting rod (93) is fixedly connected to the outside of the wedge-shaped column (92), and the connecting rod (93) and the mounting base (3) are slidably arranged. The tail end of the connecting rod (93) is fixedly connected to a U-shaped rod (94), the U-shaped rod (94) is installed inside the connecting rod of the cross (41), and a rack (95) is fixedly connected to the outside of the U-shaped rod (94). The rack (95) and the connecting rod are slidably arranged, and the rack (95) and the gear (81) mesh. The frustum block (91) is slidably disposed inside the mounting base (3), and a spring (96) is fixedly connected between the frustum block (91) and the mounting base (3).

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