A bending method for tensioner shaft pin

Abstract

The present invention discloses a method for bending a tensioner shaft pin, which relates to the technical field of tensioner production. The device includes: an adjusting device, which is arranged on one side of the conveyor line, and is used to adjust the bent end of the shaft pin on the tensioner to point to the side where the bending pin device is located; a clamping device, which cooperates with the adjusting device in a direction perpendicular to the conveyor line and is arranged above the conveyor line, and is used to clamp the two ends of the ratchet shaft on the tensioner; and a bending pin device, which cooperates with the adjusting device and the clamping device in a direction perpendicular to the conveyor line and is arranged on the other side of the conveyor line, and is used to apply force to the straight end of the shaft pin to bend the straight end. In the present invention, the adjusting device, the clamping device and the bending pin device coordinate with each other in the processing order of adjusting the shaft pin direction → locking the ratchet shaft → bending the shaft pin, thereby completing the automatic bending of the shaft pin on the tensioner. The degree of automation and production efficiency are high, the labor intensity and labor cost are low, and the tensioners produced are highly consistent.

Description

[0001] This invention application is a divisional application, parent application number: 2019104183998; parent application name: A tensioner shaft pin bending device and bending method; parent application date: 2019-05-20. Technical Field

[0002] The invention relates to the technical field of tensioner production, in particular to a tensioner shaft pin bending method. Background Art

[0003] During the transportation of goods, they often need to be tied and tightened with straps to prevent them from being shaken and dropped during transport. A ratchet tensioner is a common strap-assisted lashing tool that helps people quickly and reliably tie and tighten goods. It has the advantages of high tightening force and labor-saving operation. Its structure usually includes a trigger arm, a support arm, a ratchet, a fixed shaft, a ratchet shaft, a clamp, a stopper, etc. The ratchets on both sides are connected by a ratchet shaft and move synchronously. When the clamp and the stopper are engaged with the ratchet teeth, the trigger arm is continuously reciprocated relative to the support arm, which drives the ratchet to form a one-way intermittent rotation, thereby tightening the strap.

[0004] The ratchet shafts of tensioners currently used in the industry are limited by axle pins at both ends. During the production and processing of the tensioner, employees need to manually insert the axle pins into the pin holes at both ends of the ratchet shaft, and then use bending tools to manually bend the straight ends of the axle pins to lock them on the ratchet shaft. This method has low production efficiency, high labor intensity, and high labor costs. Therefore, for tensioner manufacturers, there is an urgent need for a device that can automatically bend the axle pins to replace the manual method.

[0005] A Chinese patent application, publication number CN 108544224 A, published on September 18, 2018, discloses an automated assembly device for a fastener. The device comprises a mechanism for positioning a handle arm and a base frame, a mechanism for positioning a ratchet, and a mechanism for inserting and positioning a semicircular shaft. A servo motor controls the push plates to move the handle arm, base frame, and ratchet to set positions. Limiting posts on the device's bar slideway restrict the position of the elastic plate buckle on the handle and base frame, preventing them from contacting the ratchet. The servo motor then drives a push rod to insert the semicircular shaft into the circular hole in the handle arm, the semicircular hole in the ratchet, and the circular hole in the base frame to secure the fastener. The fastener is removed from the device, allowing the elastic plate buckle to disengage from the limiting posts and engage with the teeth of the ratchet, completing installation and achieving automated assembly of the fastener. However, this invention lacks the ability to automatically bend the axle pin; in actual use, the pin still needs to be bent manually by an employee. Summary of the Invention

[0006] Technical problem to be solved by the invention

[0007] In response to the problems in the prior art of manual bending of tensioner axle pins, which are low in efficiency, high in labor intensity, and high in labor costs, the present invention provides a tensioner axle pin bending method, in which an adjusting device, a clamping device, and a pin bending device are arranged in coordination with each other in the processing sequence of adjusting the axle pin direction → locking the ratchet shaft → bending the axle pin, thereby completing the automatic bending of the axle pin on the tensioner. The method has a high degree of automation and production efficiency, low labor intensity and labor costs, and the tensioners produced are highly consistent.

[0008] Technical Solution

[0009] In order to solve the above problems, the technical solution provided by the present invention is:

[0010] A tensioner shaft pin bending device, comprising:

[0011] An adjusting device is provided on one side of the conveyor line and is used to adjust the bent end of the shaft pin on the tensioner to point to the side where the bending pin device is located;

[0012] a clamping device, which cooperates with the adjusting device in a direction perpendicular to the conveying line and is arranged above the conveying line, and is used to clamp the two ends of the ratchet shaft on the tensioner; and

[0013] A pin bending device cooperates with the adjusting device and the clamping device in a direction perpendicular to the conveying line and is arranged on the other side of the conveying line, and is used to apply force to the straight end of the axle pin to bend the straight end.

[0014] Furthermore, the regulating device comprises:

[0015] Cylinder 1, which is fixed obliquely downward to one side of a mounting base 1 on the upper end of a vertical plate, and the vertical plate is installed on one side of the conveyor line;

[0016] a needle seat, which is horizontally fixed to the end of the piston rod of the first cylinder; and

[0017] The upper air pipe and the lower air pipe are respectively fixed on the upper and lower sides of the needle seat, and the pipe openings of the upper air pipe and the lower air pipe are both facing the bent end of the shaft pin.

[0018] Furthermore, the adjusting device further comprises a thimble fixed on the needle seat, and the thimble extends in the same direction as the piston rod of the cylinder 1.

[0019] Furthermore, there are two upper air pipes, two lower air pipes and two ejector pins, and they are symmetrically distributed on the left and right sides of the piston rod of the first cylinder.

[0020] Furthermore, the two upper air pipes are bent to have their openings tilted downward, and the two lower air pipes are bent toward each other to have their openings facing inward; and the spacing between the two ejectors is equal to the spacing between the two ratchets on the tensioner.

[0021] Furthermore, the clamping device comprises:

[0022] Cylinder 2, with its piston rod vertically fixed downward to the front side of mounting base 2 at the upper end of the bracket; and

[0023] The mechanical claw has its claws facing downward and is fixed vertically to the end of the piston rod of the second cylinder. The bracket is arranged on one side of the conveyor line, the crossbeam at the upper end of the bracket is located above the conveyor line, and the second mounting base is fixed above the crossbeam.

[0024] Furthermore, the pin bending device comprises:

[0025] a bending component, which is arranged on a mounting table and movably connected to the mounting table via a linear guide pair, wherein the mounting table is arranged on one side of the conveyor line; and

[0026] Cylinder three is fixed on the mounting seat three on the mounting table along the extension direction of the linear guide pair, and the end of its piston rod is fixedly connected to the connecting block on the bending component.

[0027] Furthermore, two left-right symmetrical clamping claws are provided on the front side of the bending component, and two bosses are symmetrically provided on the inner sides of the two clamping claws.

[0028] Furthermore, a horizontally extending tongue is provided in the middle of the jaws between the two jaws.

[0029] A tensioner shaft pin bending method, using the tensioner shaft pin bending device described above to bend the shaft pin on the tensioner, the steps comprising:

[0030] 1. Axis pin direction adjustment: Start the adjustment device to adjust the direction of the bent end of the shaft pin on the tensioner;

[0031] i. Control the air cylinder to push the ejector pin on the needle seat to the ratchet wheels on both sides of the tensioner, and at the same time push the upper and lower air tubes on the needle seat to the bent ends close to the shaft pins on both sides of the tensioner;

[0032] ii. controlling the upper air pipe to blow air, so as to use the airflow thrust to rotate the bent end of the shaft pin to a certain angle toward the side where the clamping device is located;

[0033] iii. controlling the lower air pipe to blow air, so as to further rotate the bent end of the shaft pin to point to the side where the clamping device is located by means of the thrust of the air flow;

[0034] ⅳ. Complete the adjustment and control the cylinder to complete one return stroke;

[0035] 2. Lock the ratchet shaft: Start the clamping device to clamp the ratchet shaft on the tensioner;

[0036] i. Control cylinder 2 to push the mechanical claw downward to the end of the tensioner where the ratchet shaft is located;

[0037] ii. then controlling the mechanical claws to clamp the two ends of the ratchet shaft;

[0038] 3. Bending the axle pin: Start the pin bending device and control cylinder 3 to push the bending component along the linear guide pair toward the tensioner, so that the tongue on the front side of the bending component is inserted between the two ratchet shafts, and at the same time, use the boss on the inner side of the clamp claw to apply force to the straight end of the axle pin to bend it.

[0039] Beneficial effects

[0040] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0041] (1) The present invention provides a tensioner shaft pin bending device, which includes an adjusting device, a clamping device, and a pin bending device that are arranged in conjunction with each other. The three devices coordinate with each other to automatically complete the bending of the shaft pin on the tensioner, which is more than double the efficiency of manual bending. No human intervention is required during the bending process, which greatly reduces the labor intensity of tensioner production, reduces labor costs, and has a high degree of automation. In addition, since the bending state of the shaft pin is consistent, the tensioners produced are more consistent.

[0042] (2) The present invention provides a tensioner shaft pin bending device, wherein an upper air pipe and a lower air pipe are provided on the adjusting device, and the upper air pipe and the lower air pipe can blow air to act on the shaft pin to rotate the shaft pin to a specific position, thereby ensuring that the bending state of the shaft pin is consistent;

[0043] (3) The present invention provides a tensioner shaft pin bending device, in which an adjusting device is further provided with an ejector pin. When the cylinder pushes the upper air pipe and the lower air pipe, the ejector pin is pushed to the ratchet wheels on both sides of the tensioner, so that the upper and lower ratchet shafts and the shaft holes on the ratchet wheels are tightly matched on the same side, thereby ensuring that the pin holes on the upper and lower ratchet shafts are aligned, so that the shaft pin can be easily rotated;

[0044] (4) The present invention provides a tensioner shaft pin bending device, which has two upper air pipes, two lower air pipes, and two ejector pins, and can adjust the shaft pins on both sides of the tensioner at the same time, thereby improving production efficiency;

[0045] (5) The present invention provides a tensioner shaft pin bending device, wherein the two upper air pipes are bent to an angled downward position, and the two lower air pipes are bent toward each other to an inward position, so that the airflow blown out of the upper and lower air pipes can directly act on the bent ends to cause the shaft pin to rotate. In addition, the lower air pipes blow air toward each other from both sides of the tensioner, which can cause the shaft pin to rotate to an optimal state.

[0046] (6) The present invention provides a tensioner shaft pin bending device. After the shaft pin direction is adjusted, the upper air pipe, the lower air pipe and the ejector are raised by a return stroke of the cylinder, thereby avoiding blocking the tensioner that has completed the shaft pin bending, so that it can flow smoothly along the conveyor line to the next process;

[0047] (7) The present invention provides a tensioner shaft pin bending device, wherein the clamping device includes a second cylinder and a mechanical claw. By controlling the mechanical claw to clamp the two ends of the ratchet shaft, the ratchet shaft does not rotate when force is applied to the shaft pin, thereby ensuring that the shaft pin can be bent smoothly.

[0048] (8) The present invention provides a tensioner shaft pin bending device. After the shaft pin direction is adjusted, the height of the mechanical claw is raised by the second return stroke of the cylinder. The purpose is also to avoid blocking the tensioner that has completed the shaft pin bending, so that the tensioner can flow smoothly along the conveyor line to the next process;

[0049] (9) The present invention provides a tensioner shaft pin bending device, which includes a bending component and a third cylinder. Two bosses are symmetrically provided on the inner sides of two jaws on the front side of the bending component. The third cylinder pushes the bending component and applies force to the straight end of the shaft pin through the bosses on the two jaws on the front side of the bending component to achieve the purpose of bending the shaft pin.

[0050] (10) The present invention provides a tensioner shaft pin bending device, wherein a horizontally extending latch is provided in the middle of the jaws between the two jaws. While the straight end of the shaft pin is bent by means of a boss on the inner side of the jaws, the latch on the front side of the bending component is inserted between the upper and lower halves of the ratchet shaft to prevent the ratchet shaft from rotating under force. The latch cooperates with the clamping device to more effectively control the tensioner.

[0051] (11) The present invention provides a tensioner shaft pin bending device, wherein the bending component is movably connected to the mounting table through a linear guide pair, so that the bending component has the ability to reciprocate;

[0052] (12) The present invention provides an automatic assembly method for a tensioner shaft pin, which completes the shaft pin bending process in the order of adjusting the shaft pin direction → locking the ratchet shaft → bending the shaft pin. By adjusting the direction of the bending end of the shaft pin before bending, the shaft pin is ensured to be bent into a uniform "S" shape, thereby ensuring the consistency of the tensioner product produced; during bending, the tensioner is effectively controlled by means of the cooperation between the clamping device and the tongue on the bending component, ensuring that the bending process is completed safely and smoothly;

[0053] (13) The present invention provides an automatic assembly method for a tensioner shaft pin. During the bending process of the tensioner shaft pin, each driving component in the tensioner shaft pin bending device adopts fully automatic control, without the need for human intervention, and has a high degree of automation. Compared with the traditional processing method of manual bending, the operation time is shortened, and at the same time, the efficiency will not be reduced due to fatigue, thereby effectively improving the production efficiency of the tensioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 , a top view of the tensioner shaft pin bending device of the present invention;

[0055] Figure 2 , a top view of the adjustment device of the present invention;

[0056] Figure 3 , a left side view of the regulating device of the present invention;

[0057] Figure 4 , a top view of the clamping device of the present invention;

[0058] Figure 5 , a front view of the clamping device of the present invention;

[0059] Figure 6 , a top view of the bending pin device of the present invention;

[0060] Figure 7 , a right side view of the bending pin device of the present invention;

[0061] Figure 8 3. A left side view of the tensioner shaft pin bending device of the present invention;

[0062] Figure 9 , Schematic diagram of tensioner structure;

[0063] Figure 10 , schematic diagram of axle pin bending;

[0064] In the above drawings: 1, adjustment device; 10, vertical plate; 11, mounting base 1; 12, cylinder 1; 13, needle seat; 14, ejector pin; 15, upper air pipe; 16, lower air pipe;

[0065] 2. Clamping device; 20. Bracket; 21. Mounting seat 2; 22. Cylinder 2; 23. Mechanical claw; 200. Beam;

[0066] 3. Pin bending device; 30. Mounting table; 31. Cylinder 3; 32. Linear guide pair; 33. Bending component; 300. Mounting seat 3; 330. Connecting block; 331. Clamping claw; 332. Boss; 333. Tab;

[0067] 4. Conveyor line;

[0068] 5. Axle pin; 51. Bent end; 52. Straight end. DETAILED DESCRIPTION

[0069] The following is a further detailed description of the specific implementation methods of the present invention through the description of embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and to facilitate its implementation.

[0070] Example 1

[0071] A tensioner shaft pin bending device, such as Figure 1 、 8 As shown, it includes an adjusting device 1, a clamping device 2 and a bending pin device 3 that cooperate with each other. Figure 1 As shown, the conveyor line 4 extends laterally, and the adjusting device 1, the clamping device 2 and the pin bending device 3 are longitudinally arranged in sequence on the axle pin bending station on the conveyor line 4. The adjusting device 1 is arranged on one side of the conveyor line 4, the pin bending device 3 is arranged on the other side of the conveyor line 4, and the clamping device 2 is arranged above the conveyor line 4.

[0072] The state of the shaft pin 5 on the tensioner in this embodiment before bending is as follows Figure 10 As shown in FIG, it has a bent end 51 and a straight end 52. When the shaft pin 5 is assembled, Figure 9 As shown in FIG, the straight end 52 is inserted vertically downward into the pin holes at both ends of the ratchet shaft, and then the Figure 9 、 10 As shown in FIG, the straight end 52 is bent.

[0073] like Figure 8As shown in , after the axle pin 5 is inserted into the tensioner, it is transported to the axle pin bending station along with the tooling plate via the conveyor line 4, and then the conveyor line 4 is controlled to stop, and the tensioner on the tooling plate is placed with the end where the ratchet shaft is located facing the pin bending device 3. Since the tensioner will inevitably vibrate during transportation on the conveyor line 4, causing the axle pin 5 to rotate in the pin hole, which in turn causes the state to be inconsistent when it is transported to the axle pin bending station. Direct bending cannot ensure that the bending state of the axle pin 5 is consistent, so it is necessary to use external force to rotate the axle pin 5 to the same state before bending. After starting the tensioner axle pin bending device, first control the adjustment device 1 to adjust the bent end 51 of the axle pin 5 on the tensioner to the side where the bending pin device 3 is located to ensure consistent state; then control the clamping device 2 to clamp the two ends of the ratchet shaft on the tensioner to prevent the tensioner from being displaced by the action of the bending pin device 3; finally, control the bending pin device 3 to apply force to the straight end 52 of the axle pin 5, so that the straight end 52 is aligned with the tensioner. Figure 9 、 10 As shown in FIG, it is bent into an "S" shape.

[0074] The tensioner axle pin bending device in this embodiment automatically bends the axle pin 5 on the tensioner through the mutual cooperation of the adjusting device 1, the clamping device 2 and the bending pin device 3. No manual intervention is required during the bending process, which greatly reduces the labor intensity of tensioner production, has low labor costs, and a high degree of automation. The efficiency is more than doubled compared to manual bending, and since the bending state of the axle pin 5 is consistent, the tensioners produced are more consistent.

[0075] Example 2

[0076] The tensioner shaft pin bending device in this embodiment provides a specific structure of the adjustment device 1 based on the embodiment 1. Figure 2 、 3 As shown, the regulating device 1 includes a cylinder 12, a needle seat 13, an upper air pipe 15 and a lower air pipe 16; a vertical plate 10 is fixed vertically on one side of the conveying line 4, and a mounting seat 11 is fixed on the upper end of the vertical plate 10; Figure 2 As shown in the figure, the cylinder 12 is fixed obliquely downward to the left side of the mounting base 11; the needle seat 13 is fixed to the end of the piston rod of the cylinder 12; the upper air pipe 15 and the lower air pipe 16 are respectively fixed on the upper and lower sides of the needle seat 13; the upper air pipe 15 and the lower air pipe 16 can blow out air flow, and the air flow interruption is controllable. Specifically, the upper air pipe 15 and the lower air pipe 16 adopt metal capillaries, and are connected to the centralized air supply pipeline of the factory area through an air supply hose, and an electric valve is provided in the pipeline to control the air flow interruption.

[0077] like Figure 2 、 3As shown, the two upper air pipes 15 are bent to the ends of the pipes tilted downward, and the two lower air pipes 16 are bent toward each other to the ends of the pipes facing inward. After being pushed by the cylinder 12, the ends of the upper air pipes 15 and the lower air pipes 16 are both directed toward the bent end 51 of the shaft pin 5, so that the airflow blown out of the upper air pipes 15 and the lower air pipes 16 can directly act on the bent end 51 to rotate the shaft pin 5; in addition, the lower air pipes 16 are blown toward each other by the two sides of the tensioner, which can rotate the shaft pin 5 to Figure 9 Best condition shown in .

[0078] In order to adjust the shaft pins 5 on both sides of the tensioner at the same time and improve production efficiency, in this embodiment, Figure 2 As shown, the needle seat 13 is set to a rectangle, the end of the piston rod of the cylinder 12 is connected to the middle of the needle seat 13, and the two ends of the needle seat 13 extend horizontally to the left and right sides of the piston rod of the cylinder 12. At the same time, the number of the upper air pipe 15 and the lower air pipe 16 are both two, which are fixed symmetrically to the left and right ends of the needle seat 13 relative to the piston rod of the cylinder 12.

[0079] In actual production, due to the clearance between the axial hole on the ratchet wheel and the ratchet shaft on the tensioner, the upper and lower ratchet shaft halves are prone to misalignment, causing the axle pin 5 to become stuck in the pin hole. The airflow from the upper air pipe 15 and the lower air pipe 16 cannot rotate it. Therefore, in this embodiment, the adjustment device 1 is further provided with an ejector pin 14, which is fixed to the needle seat 13 and extends in the same direction as the piston rod of the cylinder 12. While the cylinder 12 pushes the upper air pipe 15 and the lower air pipe 16, it also pushes the ejector pin 14 to the ratchet wheels on both sides of the tensioner, so that the upper and lower ratchet shaft halves and the axial holes on the ratchet wheels are tightly aligned on the same side, thereby ensuring that the pin holes on the upper and lower ratchet shaft halves are aligned, allowing the axle pin 5 to rotate easily.

[0080] There are two ejector pins 14, and the distance between the two ejector pins 14 is equal to the distance between the two ratchets on the tensioner. They are symmetrically distributed on the left and right sides of the piston rod of the cylinder 12, and are used to respectively support the ratchets on both sides of the tensioner.

[0081] In the tensioner axle pin bending device of this embodiment, after the direction of the axle pin 5 is adjusted, the upper air pipe 15, the lower air pipe 16 and the ejector pin 14 are raised by the return stroke of the cylinder 12, thereby avoiding blocking the tensioner that has completed the axle pin bending, so that it can flow smoothly to the next process along the conveyor line 4.

[0082] Example 3

[0083] The tensioner shaft pin bending device in this embodiment provides a specific structure of the clamping device 2 based on the embodiments 1 and 2. Figure 4 、 5As shown, the clamping device 2 includes a cylinder 22 and a mechanical claw 23; a bracket 20 is vertically fixed on one side of the conveyor line 4, and the bracket 20 includes two vertically arranged columns and a beam 200 horizontally arranged at the upper end of the column, and the front side of the beam 200 extends to the top of the conveyor line 4, and a mounting seat 21 is fixed to the middle of the upper side of the beam 200, and the piston rod of the cylinder 22 is vertically fixed downward to the front side of the mounting seat 21; the clamping claw of the mechanical claw 23 is vertically fixed downward to the end of the piston rod of the cylinder 22; the mechanical claw 23 is a pneumatic mechanical claw.

[0084] After the axle pin 5 is rotated into place, the clamping device 2 is controlled to move, and the cylinder 2 22 is used to push the mechanical claw 23 downward to the end of the ratchet shaft on the tensioner. Then the mechanical claw 23 is controlled to clamp the two ends of the ratchet shaft so that the ratchet shaft does not rotate when force is applied to the axle pin 5, thereby ensuring that the axle pin 5 can be bent smoothly.

[0085] After the direction of the axle pin 5 is adjusted, the height of the mechanical claw 23 is raised by the return stroke of the cylinder 2 22. The purpose is also to avoid blocking the tensioner that completes the bending of the axle pin, so that the tensioner can flow smoothly to the next process along the conveyor line 4.

[0086] Example 4

[0087] The tensioner shaft pin bending device in this embodiment provides a specific structure of the bending pin device 3 based on the embodiments 1 to 3. Figure 6 、 7 As shown, the bending pin device 3 includes a bending component 33 and a cylinder three 31 that drives the bending component 33 to reciprocate; the bending component 33 is arranged on the mounting table 30 on one side of the conveyor line 4, and a mounting seat three 300 is fixed on the mounting table 30, and the cylinder three 31 is fixed on the mounting seat three 300 along the extension direction of the linear guide pair 32, and the end of the piston rod of the cylinder three 31 is fixedly connected to the connecting block 330 fixed on the upper end face of the bending component 33.

[0088] In order to enable the bending component 33 to have the ability to reciprocate, the bending component 33 is movably connected to the mounting table 30 through a linear guide pair 32, and the bending component 33 is driven by the cylinder 31 to slide back and forth along the linear guide pair 32.

[0089] The front side of the bending component 33 is provided with two symmetrical claws 331, and the inner sides of the two claws 331 are symmetrically provided with two bosses 332. The cylinder 31 pushes the bending component 33 and applies force to the straight end 52 of the axle pin 5 through the bosses 332 on the two claws 331 on the front side of the bending component 33 to bend it.

[0090] Because the bending force applied to the axle pin 5 is large, it is difficult to effectively clamp the tensioner with the clamping device 2 alone. Therefore, in this embodiment, a horizontally extending tongue 333 is provided in the middle of the jaws between the two jaws 331. While the straight end 52 of the axle pin 5 is bent by means of the boss 332 on the inner side of the jaws 331, the tongue 333 on the front side of the bending member 33 is inserted between the upper and lower halves of the ratchet shaft to prevent the ratchet shaft from rotating under force. The tongue 333 cooperates with the clamping device 2 to more effectively control the tensioner.

[0091] Example 5

[0092] In this embodiment, a tensioner shaft pin bending method is provided. After the tensioner shaft pin 5 is inserted into the tensioner, it is transported to the shaft pin bending station via the conveyor line 4. The tensioner shaft pin bending device described in embodiments 1 to 4 is used to bend the straight end 52 of the shaft pin 5. The specific steps are as follows:

[0093] 1. Axis pin direction adjustment: Start the adjustment device 1 to adjust the direction of the bent end 51 of the tensioner's upper shaft pin 5;

[0094] i. Control cylinder 12 to push the ejector pin 14 on the needle seat 13 to the ratchet wheels on both sides of the tensioner, and at the same time push the upper air tube 15 and the lower air tube 16 on the needle seat 13 to the bent ends 51 close to the shaft pins 5 on both sides of the tensioner;

[0095] ii. Control the upper air pipe 15 to blow air, so that the bent end 51 of the shaft pin 5 rotates a certain angle toward the side where the clamping device 2 is located by the thrust of the air flow;

[0096] iii. Control the lower air pipe 16 to blow air, so that the bent end 51 of the shaft pin 5 is further rotated to point to the side where the clamping device 2 is located by the thrust of the air flow;

[0097] ⅳ. Complete the adjustment and control the cylinder to return to 12 strokes;

[0098] 2. Lock the ratchet shaft: Start the clamping device 2 to clamp the ratchet shaft on the tensioner;

[0099] i. Control the second cylinder 22 to push the mechanical claw 23 downward to the end of the tensioner where the ratchet shaft is located;

[0100] ii. Then control the mechanical claws 23 to clamp the two ends of the ratchet shaft;

[0101] 3. Bending the Axle Pin: Start the pin bending device 3 and control the cylinder 3 31 to push the bending component 33 along the linear guide pair 32 toward the tensioner, so that the tongue 333 on the front side of the bending component 33 is inserted between the two ratchet shafts. At the same time, the boss 332 on the inner side of the jaw 331 applies force to the straight end 52 of the axle pin 5 to bend it;

[0102] 4. After the bending is completed, the mechanical claw 23 is controlled to loosen the ratchet shaft of the tensioner, and then the cylinder 2 22 is controlled to return to lift the mechanical claw 23 to the initial position; at the same time, the cylinder 3 31 is controlled to return to make the bending part 33 return to the starting position.

[0103] In the tensioner axle pin bending method of this embodiment, the bending process of the axle pin 5 is completed in the order of adjusting the axle pin direction → locking the ratchet shaft → bending the axle pin. By adjusting the direction of the bent end 51 of the axle pin 5 before bending, the axle pin 5 is bent into an "S" shape, thereby ensuring the consistency of the tensioner product produced; during bending, the tensioner is effectively controlled with the help of the clamping device 2 and the tongue 333 on the bending part 33, ensuring the safe and smooth completion of the bending process.

[0104] It should also be noted that in the process of bending the tensioner shaft pin using this method, the various driving components in the tensioner shaft pin bending device are fully automatically controlled, without the need for human intervention, and have a high degree of automation. Compared with the traditional manual bending processing method, the action time is shortened, and at the same time, the efficiency will not be reduced due to fatigue, thereby effectively improving the production efficiency of the tensioner.

[0105] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A method for bending a tensioner shaft pin, characterized in that: Bending by a bending device, the bending device comprising: An adjusting device (1) is provided on one side of the conveying line (4) and is used to adjust the bent end (51) of the shaft pin (5) on the tensioner to point to the side where the bending pin device (3) is located; A clamping device (2) cooperates with the adjusting device (1) in a direction perpendicular to the conveying line (4) and is arranged above the conveying line (4) for clamping both ends of the ratchet shaft on the tensioner; and a pin bending device (3), which cooperates with the adjusting device (1) and the clamping device (2) in a direction perpendicular to the conveying line (4), and is arranged on the other side of the conveying line (4), and is used to apply force to the straight end (52) of the shaft pin (5) to bend the straight end (52); A vertical plate (10) is fixed vertically on one side of the conveying line (4), and a mounting seat (11) is fixed on the upper end of the vertical plate (10); The regulating device (1) comprises: Cylinder 1 (12), which is fixed obliquely downward on one side of mounting base 1 (11); a needle seat (13) fixed horizontally to the end of the piston rod of the cylinder (12); and An upper air tube (15) and a lower air tube (16), wherein the upper air tube (15) and the lower air tube (16) are respectively fixed on the upper and lower sides of the needle seat (13), and the tube openings thereof are both oriented toward the bent end (51) of the shaft pin (5); The steps include:

1. Axis pin direction adjustment: start the adjustment device (1) to adjust the direction of the bent end (51) of the axle pin (5) on the tensioner; i. Controlling the air cylinder 1 (12) to push the ejector pin (14) on the needle seat (13) to the ratchet wheels on both sides of the tensioner, and at the same time pushing the upper air pipe (15) and the lower air pipe (16) on the needle seat (13) to the bent ends (51) close to the shaft pins (5) on both sides of the tensioner; ii. controlling the upper air pipe (15) to blow air, so as to use the airflow thrust to rotate the bent end (51) of the shaft pin (5) toward the side where the clamping device (2) is located at a certain angle; iii. controlling the lower air pipe (16) to blow air, so as to further rotate the bent end (51) of the shaft pin (5) to the side where the bending pin device (3) is located by means of the thrust of the air flow; iv. After adjustment is completed, the cylinder 1 (12) is controlled to return; 2. Locking the ratchet shaft: Activate the clamping device (2) to clamp the ratchet shaft on the tensioner; i. Controlling the second air cylinder (22) to push the mechanical claw (23) downward to the end of the tensioner where the ratchet shaft is located; ii. then controlling the mechanical claws (23) to clamp the two ends of the ratchet shaft; 3. Bending the axle pin: Start the pin bending device (3), control the cylinder 3 (31) to push the bending component (33) along the linear guide rail pair (32) toward the tensioner, so that the tongue (333) on the front side of the bending component (33) is inserted between the upper and lower ratchet shaft halves, and at the same time, the straight end (52) of the axle pin (5) is bent by applying force with the help of the boss (332) on the inner side of the clamp claw (331).

2. The bending method according to claim 1, characterized in that: Also includes the steps:

4. After the bending is completed, the mechanical claw (23) is controlled to release the ratchet shaft of the tensioner, and then the cylinder 2 (22) is controlled to return to lift the mechanical claw (23) to the initial position; at the same time, the cylinder 3 (31) is controlled to return to make the bending part (33) return to the starting position.

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