Mechanical reset device of electric bundling head of rod bundling machine and electric bundling head

Abstract

The utility model discloses a mechanical reset device of electric bundling head of bar bundling machine, it includes pawl subassembly, stop block, torsion block, the middle part of torsion block outer circle is provided with helical groove, and the terminal of groove is fixed with stop block, the pawl subassembly sets up inside the box and is connected with the box, and the pawl subassembly keeps contact state with helical groove. The utility model discloses mechanical reset device through increasing pawl subassembly on bundling head, and processing helical groove on torsion block and fixedly stopping the block, realizes the accuracy of guaranteeing servo motor regression zero position through the prevention of pawl subassembly to stop the block after packing.

Description

Technical Field

[0001] This utility model relates to a reset device for the baling head of a bar baling machine and an electric baling head. Background Technology

[0002] After the bars come off the production line, a packing machine is needed to bundle multiple bars together using a packing line to facilitate subsequent storage and transportation.

[0003] Chinese patent CN119604460A (publication date: March 11, 2025) discloses a wire binding machine in which the twisting head for threading and twisting is driven by a servo motor and relies on it for zeroing and returning to its original position. The disadvantage is that the servo motor will experience a decrease in positioning accuracy and cumulative error due to mechanical wear, algorithm deviation, environmental interference, and backlash in gear transmission during long-term operation. Therefore, maintenance and calibration are required. The wire binding machine is usually used in steel plants with high temperature and continuous operation, so frequent maintenance and calibration are required, which greatly affects production efficiency. Summary of the Invention

[0004] The problem this invention aims to solve is to provide a mechanical reset device for the electric baling head of a bar baling machine. This device achieves this by adding a ratchet assembly to the baling head, machining a spiral groove on the torsion block, and fixing a stop block. After baling, the ratchet assembly prevents the stop block from engaging, ensuring the servo motor accurately returns to its zero position. This invention uses a purely mechanical method to automatically calibrate the cumulative error of the servo motor, eliminating the need for frequent maintenance and calibration, thus significantly improving production efficiency. This invention also provides an electric baling head.

[0005] The present invention relates to a mechanical reset device for an electric baling head of a bar baling machine. It includes a pawl assembly, a stop block, and a torsion block. A spiral groove is provided in the middle of the outer circle of the torsion block, and a stop block is fixed at the end of the groove. The pawl assembly is located inside the housing and connected to the housing. The pawl assembly is in contact with the spiral groove.

[0006] Furthermore, the ratchet assembly includes a connecting shaft, a top block, a torsion spring, and a support. The top block is disposed between two support plates of the support and has a groove. A positioning hole is provided at the bottom of the groove of the top block and in the middle of the bottom of the support. The torsion spring is disposed in the groove of the top block and its two ends are respectively inserted into the positioning holes. The connecting shaft passes through the inner holes of the two support plates of the support, the inner holes on both sides of the groove of the top block, and the inner ring of the torsion spring and is engaged with the inner holes.

[0007] Furthermore, the ratchet assembly also includes a copper sleeve and copper washers. A copper sleeve is provided between the inner hole of the top block and the outer circle of the connecting shaft. Two copper washers are fitted onto the copper sleeve and are respectively located in the gap between the two sides of the top block and the end faces of the two support plates of the support.

[0008] Furthermore, the pawl assembly also includes a bushing, with a bushing disposed between the inner ring of the torsion spring and the outer circle of the copper bushing, the bushing engaging with the copper bushing and located within the groove of the top block.

[0009] Furthermore, the spiral groove in the middle of the outer circle of the torsion block has a smooth transition and spiral deepening form with the outer circle, and an installation groove is machined at its end point, on which the stop block is installed.

[0010] This utility model relates to an electric bundling head, which includes a housing, a servo motor, a right-angle geared motor, a drive gear, a driven gear, a housing cover, a torsion head, and a mechanical reset device. After the servo motor and the right-angle geared motor are installed, they are bolted to the housing cover, which is bolted to the housing body. The drive gear is installed at the output end of the right-angle geared motor and meshes with the driven gear. The torsion block is bolted to the driven gear, and the torsion head is connected to the torsion block. A stop block is fixed at the end of the spiral groove on the outer circle of the torsion block. A ratchet assembly is located inside the housing and connected to the housing, and the ratchet assembly maintains contact with the spiral groove.

[0011] The advantages of this mechanical reset device are: by adding a ratchet assembly to the bundling head, machining a spiral groove on the torsion block, and fixing the stop block, the accuracy of the servo motor returning to zero is ensured by the ratchet assembly preventing the stop block after packaging. This invention uses a purely mechanical method to automatically calibrate the cumulative error of the servo motor, eliminating the need for frequent maintenance and calibration of the servo motor, thus greatly improving production efficiency. Attached Figure Description

[0012] Figure 1 This utility model is a three-dimensional electric bundling head. Figure 1 (Remove part of the box).

[0013] Figure 2 This utility model is a three-dimensional electric bundling head. Figure 2 (Remove part of the box).

[0014] Figure 3 This is a front view of the electric bundling head of this utility model.

[0015] Figure 4 yes Figure 3 The left view.

[0016] Figure 5 yes Figure 3 A bottom view.

[0017] Figure 6 This is a 3D view of the ratchet assembly.

[0018] Figure 7 This is an exploded view of the ratchet assembly.

[0019] Figure 8 This is the main view of the ratchet component.

[0020] Figure 9 It is along Figure 8 A cross-sectional view along line AA in the middle.

[0021] Figure 10 This is the main view of the twist block.

[0022] Figure 11 It is along Figure 10 A cross-sectional view along the BB line. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] from Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 It can be seen that the mechanical reset device of this utility model includes a pawl assembly 1, a stop block 2, and a torsion block 3. A spiral groove is provided in the middle of the outer circle of the torsion block 3, and the stop block 2 is fixed at the end of the groove. The pawl assembly 1 is located inside the box and connected to the box. The pawl assembly 1 is in contact with the spiral groove.

[0026] When the torsion block 3 rotates clockwise, the pawl device will not block the stop block 2. When the torsion block 3 rotates counterclockwise, the stop block 2 will eventually contact the pawl device 1, preventing the torsion block 3 from continuing to rotate counterclockwise. This is precisely the zero position of the servo motor. Therefore, this invention can achieve mechanical reset of the electric bundling head servo motor, ensuring positioning accuracy, reducing the frequency of manual maintenance, and improving production efficiency.

[0027] Example 2

[0028] from Figure 6 , Figure 7 , Figure 8 , Figure 9 As can be seen, the mechanical reset device of this utility model includes a pawl assembly 1 comprising a connecting shaft 11, a top block 12, a torsion spring 13, and a support 14. The top block 12 is disposed between two support plates of the support 14, and a groove is provided on the top block 12. A positioning hole is provided at the bottom of the groove of the top block 12 and at the middle of the bottom of the support 14. The torsion spring 13 is disposed in the groove of the top block 12, and its two ends are respectively inserted into the positioning holes. The connecting shaft 11 passes through the inner holes of the two support plates of the support 14, the inner holes on both sides of the groove of the top block 12, and the inner ring of the torsion spring 13, and all of them are engaged with the inner holes.

[0029] When the torsion block 3 rotates clockwise, the top block 12 of the pawl device will not generate resistance with the stop block. When the torsion block 3 rotates counterclockwise, the stop block 2 will eventually contact the top block 2 of the pawl device as it rotates, causing the torsion block 3 to be unable to continue rotating counterclockwise. This is exactly the zero position of the servo motor.

[0030] Example 3

[0031] from Figure 6 , Figure 7 , Figure 8 , Figure 9 It can be seen that the mechanical reset device of this utility model: the pawl assembly 1 also includes a copper sleeve 15 and a copper washer 16. A copper sleeve 15 is provided between the inner hole of the top block 12 and the outer circle of the connecting shaft 11. The left and right copper washers 16 are sleeved on the copper sleeve 15 and are respectively located in the gap between the two sides of the top block 12 and the end faces of the two support plates of the support 14.

[0032] The left and right copper washers 16 axially position the top block 12. When the top block 12 rotates, its inner ring contacts the copper sleeve 15 and its end face contacts the copper washers 16, so as to reduce the wear of the contact surfaces of the connecting shaft, the top block and the support, thereby improving the service life of the device.

[0033] Example 4

[0034] from Figure 6 , Figure 7 , Figure 8 , Figure 9 As can be seen, the mechanical reset device of this utility model: the pawl assembly also includes a bushing 17. A bushing 17 is provided between the inner ring of the torsion spring 13 and the outer circle of the copper sleeve 15. The bushing 17 cooperates with the copper sleeve 15 and is located in the groove of the top block 12.

[0035] The bushing 17 replaces the copper bushing 15 and forms a fit with the inner ring of the torsion spring 13, reducing the gap between the inner ring of the torsion spring 13 and the connecting shaft 11, thus ensuring stability during the torsion process.

[0036] Example 5

[0037] from Figure 10 , Figure 11 It can be seen that in the mechanical reset device of this utility model, the spiral groove 31 in the middle of the outer circle of the torsion block 3 has a smooth transition and spiral deepening form with the outer circle, and an installation groove 32 is processed at its end point, and the stop block 2 is installed on the installation groove 32.

[0038] During installation, by adjusting the top block 12 of the pawl assembly 1 to contact the stop block 2, this is the zero position of the packing head (i.e., the threading position).

[0039] Example 6

[0040] from Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 As can be seen, the electric bundling head of this utility model includes a housing 4, a servo motor 5, a right-angle reduction motor 6, a drive gear 7, a driven gear 8, a housing cover 9, a torsion head 10, and a mechanical reset device. After the servo motor 5 and the right-angle reduction motor 6 are installed, they are bolted to the housing cover 9. The housing cover 9 is bolted to the housing 4. The drive gear 7 is installed at the output end of the right-angle reduction motor 6. The drive gear 7 meshes with the driven gear 8. The torsion block 3 is bolted to the driven gear 8. The torsion head 10 is connected to the torsion block 3. The stop block 2 is fixed at the end of the spiral groove on the outer circle of the torsion block 3. The pawl assembly 1 is set inside the housing 4 and connected to the housing 4. The pawl assembly 1 is in contact with the spiral groove.

[0041] The working principle of this mechanical reset device is as follows: When packaging is required, the servo motor 5 drives the drive gear 7 to rotate counterclockwise through the right-angle reduction motor 6 (viewed from the direction of the servo motor, i.e., from top to bottom), causing the driven gear 8 to drive the torsion block 3 to rotate clockwise, thereby causing the torsion head 10 to rotate and twist the packaging line to achieve packaging; after packaging is completed, the servo motor 5 drives the drive gear 7 to rotate clockwise, and the driven gear 8 drives the torsion block 3 to rotate counterclockwise. When the torsion block 3 rotates counterclockwise until the top block 12 contacts the stop block 2, the servo motor 5 returns to the zero position, and the torsion head 10 resets to enable threading during the next packaging.

[0042] As can be seen from the above, the advantages of this mechanical reset device are: by adding a ratchet assembly to the bundling head, machining a spiral groove on the torsion block, and fixing the stop block, the accuracy of the servo motor returning to zero is ensured by the ratchet assembly preventing the stop block after packaging. This invention uses a purely mechanical method to automatically calibrate the cumulative error of the servo motor, eliminating the need for frequent maintenance and calibration of the servo motor, thus greatly improving production efficiency.

Claims

1. A mechanical reset device for the electric baling head of a bar baler, characterized in that: It includes a pawl assembly (1), a stop block (2), and a torsion block (3). The torsion block (3) has a spiral groove in the middle of its outer circle, and a stop block (2) is fixed at the end of the groove. The pawl assembly (1) is located inside the box and connected to the box. The pawl assembly (1) is in contact with the spiral groove.

2. The mechanical reset device according to claim 1, characterized in that: The pawl assembly (1) includes a connecting shaft (11), a top block (12), a torsion spring (13), and a support (14). The top block (12) is located between the two support plates of the support (14). The top block (12) has a groove. A positioning hole is provided at the bottom of the groove of the top block (12) and at the middle of the bottom of the support (14). The torsion spring (13) is located in the groove of the top block (12) and its two ends are inserted into the positioning holes respectively. The connecting shaft (11) passes through the inner holes of the two support plates of the support (14), the inner holes on both sides of the groove of the top block (12), and the inner ring of the torsion spring (13) and is engaged with the inner holes.

3. The mechanical reset device according to claim 1, characterized in that: The pawl assembly (1) also includes a copper sleeve (15) and copper gaskets (16). A copper sleeve (15) is provided between the inner hole of the top block (12) and the outer circle of the connecting shaft (11). Two copper gaskets (16) are fitted on the copper sleeve (15) and are respectively located in the gap between the two sides of the top block (12) and the end faces of the two support plates of the support (14).

4. The mechanical reset device according to claim 1, characterized in that: The pawl assembly also includes a bushing (17), which is provided between the inner ring of the torsion spring (13) and the outer circle of the copper sleeve (15). The bushing (17) engages with the copper sleeve (15) and is located in the groove of the top block (12).

5. The mechanical reset device according to claim 1, characterized in that: The spiral groove (31) in the middle of the outer circle of the torsion block (3) is smoothly transitioned to the outer circle in a spiral deepening form, and an installation groove (32) is machined at its end point. The stop block (2) is installed on the installation groove (32).

6. An electric baling head, characterized by: It includes a housing (4), a servo motor (5), a right-angle geared motor (6), a drive gear (7), a driven gear (8), a housing cover (9), a torsion head (10), and a mechanical reset device as described in any of claims 1-5; after the servo motor (5) and the right-angle geared motor (6) are installed, they are mounted on the housing cover (9) by bolts, the housing cover (9) is bolted to the housing (4), the drive gear (7) is installed at the output end of the right-angle geared motor (6), the drive gear (7) meshes with the driven gear (8), the torsion block (3) is fixed to the driven gear (8) by bolts, the torsion head (10) is connected to the torsion block (3), the stop block (2) is fixed at the end of the spiral groove on the outer circle of the torsion block (3), the pawl assembly (1) is set inside the housing (4) and connected to the housing (4), and the pawl assembly (1) is in contact with the spiral groove.

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