A resettable presser bar for a folding machine

Abstract

The application discloses a resettable pressing rod of a flanging machine, which comprises a resettable pressing rod and a tooling, the resettable pressing rod comprises a transition shaft, a barrel-shaped pressing rod, a fixed cylindrical pin and a reset spring, the resettable pressing rod is provided with the transition shaft, one end of the transition shaft is provided with a guide key, a cylindrical pin mounting hole A is formed in the transition shaft, a spring mounting hole A is further formed in the transition shaft, one end of the barrel-shaped pressing rod is provided with a positioning groove which is uniformly distributed along the axial radial direction, a cylindrical pin mounting hole B is further formed in the barrel-shaped pressing rod, a spring mounting hole B is further formed in the barrel-shaped pressing rod, and the other end of the barrel-shaped pressing rod is provided with a pressing foot mounting hole. When the plate is stuck or the operator misoperates, the transition shaft and the barrel-shaped pressing rod can be separated, the related parts are not damaged, the abrasion of the plate is reduced, and the operator has enough time to deal with the problem of the machine operation.

Description

Technical Field

[0001] This invention relates to the field of folding machines, specifically to a resettable pressure bar for a folding machine. Background Technology

[0002] Working principle of folding machine: After the sheet material is placed on the worktable and positioned, the pressing beam presses down to clamp and fix it. Then the folding beam rotates upward / downward around the axis, and the mechanical force causes the edge of the sheet material to undergo plastic deformation at a predetermined angle to complete the folding. It is mostly driven by hydraulic / servo, and the angle and size are set by CNC.

[0003] In the existing technology of folding machines, the pressure bar of most folding machines is a separate component. Patent CN201620669816.8 uses a structure where a separate pressure bar is connected to a pressure foot. A drive device drives the pressure bar, causing the pressure foot to press the sheet metal, achieving the functions of pressing and rotating. Although the structure is simple and easy to operate, certain problems exist in practical use. For example, during the pressing process, the sheet metal may get stuck, or operator error may cause the pressing and rotating conveying mechanism to move in the opposite direction to the sheet metal. This can lead to machine stoppage, scratches on the sheet metal, or even damage to the pressure bar or pressure foot, causing significant inconvenience. Summary of the Invention

[0004] The purpose of this invention is to provide a resettable pressure bar for a folding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a resettable pressure bar for a folding machine is provided, comprising a reset pressure bar and a tooling. The reset pressure bar includes a transition shaft, a barrel-shaped pressure bar, a fixed cylindrical pin, and a reset spring. The reset pressure bar has a transition shaft with a guide key at one end and a cylindrical pin mounting hole A on the transition shaft. The transition shaft also has a spring mounting hole A inside the transition shaft. One end of the barrel-shaped pressure bar has a positioning groove evenly distributed along the shaft diameter. The barrel-shaped pressure bar also has a cylindrical pin mounting hole B and a spring mounting hole B inside the barrel-shaped pressure bar. The other end of the barrel-shaped pressure bar has a pressure foot mounting hole, and a pressure foot is connected to the pressure foot mounting hole. The pressure foot is connected to the barrel-shaped pressure bar through the pressure foot mounting hole. The reset pressure bar also has a tooling at its end.

[0006] Furthermore, both the transition shaft and the barrel-shaped pressure rod are provided with fixed cylindrical pins, and one set of the fixed cylindrical pins is inserted into the cylindrical pin mounting hole A opened on the transition shaft, while another set of the fixed cylindrical pins is inserted into the cylindrical pin mounting hole B opened on the barrel-shaped pressure rod.

[0007] Furthermore, the transition shaft and the barrel-shaped pressure rod are connected to the positioning groove via a guide key, and the two ends of the reset spring are respectively fixed to two sets of fixed cylindrical pins.

[0008] Furthermore, the tooling includes a pull rod, a nut, a washer, a wire rope, and a wire rope lock. The outer side of the pull rod shaft is fully threaded, and a reserved hole is provided inside the pull rod, with a wire rope connected to the reserved hole.

[0009] Furthermore, one end of the wire rope is hooked to the reset spring, and the wire rope passes through the pull rod and is locked by the wire rope buckle.

[0010] Furthermore, the reset lever has a combined structure, and the transition shaft and the barrel-shaped lever on the reset lever are concentric circles.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution has a simple and compact structure, high reliability, and can be used for a long time; special tooling is used to assist in the installation of the reset spring, which greatly reduces the assembly time.

[0012] 2. This solution uses a guide key and positioning groove connection, which has high rotational accuracy. When the transition shaft and the barrel-shaped pressure rod separate at a small angle, the barrel-shaped pressure rod can automatically reset under the tension of the return spring and the guiding action, without manual operation. If the separation angle is too large, it can be reset manually.

[0013] 3. This solution uses a modular structure. In case of plate jamming or operator error, the transition shaft and barrel-shaped pressure rod can be detached without damaging related components, while reducing wear on the plate. This also gives the operator sufficient time to correct the machine's operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the AA cross-sectional structure in the diagram; Figure 3 This is a schematic diagram of the transition shaft and its connection structure of the present invention; Figure 4 This is a schematic diagram of the barrel-shaped pressure bar and its connection structure according to the present invention; Figure 5 This is a schematic diagram of the nut and its connection structure according to the present invention; Figure 6 This is a schematic diagram of the tooling and its connection structure of the present invention; Figure 7 This is a schematic diagram showing the installation direction of the fixed cylindrical pin in this invention; Figure 8 This is a schematic diagram showing the installation direction of the presser foot of the present invention.

[0015] The following are the labels in the diagram: 1. Reset lever; 2. Transition shaft; 21. Guide key; 22. Cylindrical pin mounting hole A; 23. Spring mounting hole A; 3. Barrel-shaped lever; 31. Positioning groove; 32. Cylindrical pin mounting hole B; 33. Spring mounting hole B; 34. Presser foot mounting hole; 4. Fixed cylindrical pin; 5. Reset spring; 6. Presser foot; 7. Tooling; 71. Nut; 72. Washer; 73. Wire rope; 74. Wire rope lock; 8. Pull rod. Detailed Implementation

[0016] Please see Figure 1 - Figure 8 This invention provides a resettable pressure bar for a folding machine, comprising a reset pressure bar 1 and a tooling 7. The reset pressure bar 1 includes a transition shaft 2, a barrel-shaped pressure bar 3, a fixed cylindrical pin 4, and a reset spring 5. The reset pressure bar 1 is provided with the transition shaft 2, and one end of the transition shaft 2 is provided with a guide key 21. The transition shaft 2 is also provided with a cylindrical pin mounting hole A22 and a spring mounting hole A23. One end of the barrel-shaped pressure bar 3 is provided with a positioning groove 31, which is evenly distributed along the shaft diameter. The barrel-shaped pressure bar 3 is also provided with a cylindrical pin mounting hole B32 and a spring mounting hole B33 inside the barrel-shaped pressure bar 3. The other end of the barrel-shaped pressure bar 3 is provided with a pressure foot mounting hole 34, and a pressure foot 6 is connected to the pressure foot mounting hole 34. The pressure foot 6 is connected to the barrel-shaped pressure bar 3 through the pressure foot mounting hole 34. The reset pressure bar 1 is also provided with a tooling 7.

[0017] Both the transition shaft 2 and the barrel-shaped pressure rod 3 are equipped with fixed cylindrical pins 4. One set of fixed cylindrical pins 4 are inserted into the cylindrical pin mounting hole A22 opened on the transition shaft 2, while another set of fixed cylindrical pins 4 are inserted into the cylindrical pin mounting hole B32 opened on the barrel-shaped pressure rod 3.

[0018] The transition shaft 2 and the barrel-shaped pressure rod 3 are connected to the positioning groove 31 through the guide key 21, and the two ends of the return spring 5 are respectively fixed on two sets of fixed cylindrical pins 4.

[0019] The tooling 7 includes a pull rod 8, a nut 71, a washer 72, a wire rope 73, and a wire rope lock 74. The outer side of the pull rod 8 shaft is fully threaded, and a reserved hole is provided inside the pull rod 8. The wire rope 73 is connected to the reserved hole.

[0020] The wire rope 73 is hooked to one end of the reset spring 5, and the wire rope 73 passes through the pull rod 8 and is locked by the wire rope lock 74.

[0021] The reset lever 1 has a combined structure, and the transition shaft 2 and the barrel-shaped lever 3 on the reset lever 1 have a concentric circle structure.

[0022] Working principle: The pressure bar is a modular structure, including a transition shaft 2, a barrel-shaped pressure bar 3, a fixed cylindrical pin 4, and a return spring 5. One end of the transition shaft 2 is provided with a guide key 21, which is evenly distributed along the shaft diameter. The shaft body is provided with a cylindrical pin mounting hole A22 and a spring mounting hole A23 inside the shaft body. One end of the barrel-shaped pressure bar 3 is provided with a positioning groove 31, which is evenly distributed along the shaft diameter. The pressure bar is provided with a cylindrical pin mounting hole B32 and a spring mounting hole B33 inside the pressure bar. The other end of the pressure bar is provided with a pressure foot mounting hole 34, and the pressure foot 6 is connected to the barrel-shaped pressure bar 3 through the pressure foot mounting hole 34.

[0023] The transition shaft 2 and the barrel-shaped pressure rod 3 are connected to the positioning groove 31 via a guide key 21, serving as a guide and positioning mechanism. The return spring 5 is fixed at both ends to the fixed cylindrical pins 4. In a static state, the return spring 5 generates axial tension within the barrel-shaped pressure rod 3, tightly pulling the originally independent transition shaft 2 and barrel-shaped pressure rod 3 together. If an external force causes the barrel-shaped pressure rod 3 to detach from the transition shaft 2, the barrel-shaped pressure rod 3 can automatically or manually return to its original position, thus protecting the machine and reducing scratches on the sheet metal.

[0024] like Figures 1 to 8 As shown, the special tooling 7 used for spring assembly includes a pull rod 8, a nut 71, a washer 72, a wire rope 73, and a wire rope lock 74. After one end of the return spring 5 is installed on the fixed cylindrical pin 4, the return spring 5 needs to be pre-stretched to the fixed cylindrical pin 4 at the other end. The outer shaft of the pull rod 8 is fully threaded, and the inner shaft of the pull rod 8 has a reserved hole for threading the wire rope.

[0025] The wire rope 73 hooks onto one end of the return spring 5. The wire rope 73 passes through the pull rod 8 and is locked by the wire rope lock 74 to achieve a locking effect. The pull rod 8 is fixed with a wrench, and the spring is stretched by rotating the nut 71. When the return spring 5 reaches the installation position, the fixing cylindrical pin 4 is installed. At this time, the tooling 7 is removed, and the pressure foot 6 is installed.

[0026] This solution has a simple and compact structure, high reliability, and can be used for a long time; when installing the reset spring 5, there is a special tooling 7 to assist, which greatly reduces the assembly time.

[0027] This solution uses a guide key 21 connected to a positioning groove 31, which provides high rotational accuracy. When the transition shaft 2 separates from the barrel-shaped pressure rod 3 at a small angle, the barrel-shaped pressure rod 3 can automatically reset under the tension of the return spring 5 and the guiding action, without manual operation. If the separation angle is too large, it can be reset manually.

[0028] This design uses a modular structure. In the event of jamming of the sheet metal or operator error, the transition shaft 2 and the barrel-shaped pressure rod 3 can be detached without damaging related components, while also reducing wear on the sheet metal. This provides the operator with sufficient time to address the machine's operational issues.

Claims

1. A resettable pressure bar for a folding machine, comprising a resettable pressure bar (1) and a tooling (7), characterized in that: The reset pressure rod (1) includes a transition shaft (2), a barrel-shaped pressure rod (3), a fixed cylindrical pin (4), and a reset spring (5). The reset pressure rod (1) is provided with a transition shaft (2), and one end of the transition shaft (2) is provided with a guide key (21). At the same time, a cylindrical pin mounting hole A (22) is also provided on the transition shaft (2). A spring mounting hole A (23) is also provided inside the transition shaft (2). One end of the barrel-shaped pressure rod (3) is provided with a positioning groove (31), and the positioning groove (31) is evenly distributed along the shaft diameter direction. A cylindrical pin mounting hole B (32) is also provided on the barrel-shaped pressure rod (3), and a spring mounting hole B (33) is provided inside the barrel-shaped pressure rod (3). The other end of the barrel-shaped pressure rod (3) is provided with a foot mounting hole (34), and a foot (6) is connected to the foot mounting hole (34). The foot (6) is connected to the barrel-shaped pressure rod (3) through the foot mounting hole (34). The end of the reset pressure rod (1) is also provided with a tooling (7).

2. The reversible pressure bar of a folding machine according to claim 1, characterized in that: Both the transition shaft (2) and the barrel-shaped pressure rod (3) are provided with fixed cylindrical pins (4), and one set of fixed cylindrical pins (4) are inserted into the cylindrical pin mounting hole A (22) opened on the transition shaft (2), while another set of fixed cylindrical pins (4) are inserted into the cylindrical pin mounting hole B (32) opened on the barrel-shaped pressure rod (3).

3. A resettable pressure bar for a folding machine according to claim 2, characterized in that: The transition shaft (2) and the barrel-shaped pressure rod (3) are connected to the positioning groove (31) via a guide key (21), and the two ends of the reset spring (5) are respectively fixed on the two sets of fixed cylindrical pins (4).

4. A resettable pressure bar for a folding machine according to claim 1, characterized in that: The tooling (7) includes a pull rod (8), a nut (71), a washer (72), a wire rope (73), and a wire rope lock (74). The pull rod (8) has a full thread on the outer side of its shaft, and a reserved hole is provided inside the pull rod (8), and a wire rope (73) is connected inside the reserved hole.

5. A resettable pressure bar for a folding machine according to claim 4, characterized in that: The wire rope (73) is hooked to one end of the reset spring (5), and the wire rope (73) passes through the pull rod (8) and is locked by the wire rope buckle (74).

6. A resettable pressure bar for a folding machine according to claim 1, characterized in that: The reset pressure rod (1) has a combined structure, and the transition shaft (2) and the barrel-shaped pressure rod (3) on the reset pressure rod (1) have a concentric circle structure.

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