Holder punching laser pre-positioning device

Abstract

The utility model discloses a holder punching laser pre-positioning device, a positioning hole is formed in a holder, and the laser pre-positioning device comprises a punching machine, a punching tool, a feeding tool and a laser pre-positioning mechanism. The punching machine comprises a punching female die and a punch and is used for punching the retainer. A positioning disc and a ratchet motor are installed on the punching tool, a positioning rod matched with the positioning hole is arranged on the positioning disc, and the positioning disc is matched with the retainer in an extrusion mode so as to drive the retainer to rotate. A material receiving male die and a motor are installed on the feeding tool, the material receiving male die is matched with the retainer in a magnetic attraction mode, and feeding installation of the retainer is achieved. The laser pre-positioning mechanism comprises an adjusting support and a laser sensor installed on the adjusting support, the laser sensor can detect the position of the positioning hole, the laser sensor is in signal connection with the motor, the retainer can be conveniently rotated to the pre-positioning position, the time for installing the retainer to the positioning disc is saved, and the punching efficiency of the retainer is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing retainer processing, and in particular relates to a retainer punching laser pre-positioning device. Background Art

[0002] Tapered roller bearings are split bearings. The inner and outer rings of the bearings have tapered raceways. The retainer is a bearing part that wraps all or part of the rolling elements and moves with them. During processing, the retainer needs to be punched to facilitate the placement of the rolling elements. The existing patent (publication number: CN219112651U) discloses an automatic punching die for the retainer of a tapered bearing. It also discloses the partial punching process of the retainer.

[0003] In fact, when the retainer is punching, the retainer is first sleeved onto the receiving punch of the feeding tooling, the feeding tooling moves the retainer to the punching tooling, and installs the retainer on the positioning plate, and then the punch press performs the punching operation on the retainer installed on the positioning plate. A positioning hole is opened on the retainer, and a positioning rod is provided on the positioning plate. When the retainer on the receiving punch is installed on the positioning plate, the receiving punch drives the retainer to rotate so that the positioning rod on the positioning plate is inserted into the positioning hole of the retainer to ensure the accuracy of the punching.

[0004] The existing retainer punching process has the following problems:

[0005] 1. When the receiving punch drives the retainer to rotate and install the retainer on the positioning plate, the rotation positioning of the retainer takes a long time, which makes the efficiency of punching the retainer low;

[0006] 2. When the retainer is close to the positioning plate and rotates, the bottom plate of the retainer and the positioning rod produce friction, causing wear on the positioning rod and the retainer. Utility Model Content

[0007] In view of the above-mentioned deficiencies, the utility model provides a laser pre-positioning device for punching a retainer, which realizes the pre-positioning of the retainer by sensing the positioning hole of the retainer located on the receiving punch using a laser sensor, and then the receiving punch directly installs the retainer to the positioning plate, without the need for rotational positioning when installing the retainer, thereby reducing the time for the receiving punch to install the retainer on the positioning plate and improving the punching efficiency of the retainer; since the retainer on the receiving punch is pre-positioned in advance and the laser sensor is used to remotely rotationally position the retainer, when the receiving punch installs the retainer to the positioning plate, the positioning hole of the retainer and the positioning rod of the positioning plate can be on the same axis, and when the receiving punch drives the retainer to move toward the positioning plate, the positioning hole of the retainer and the positioning rod of the positioning plate are plugged and fixed, and the rotational positioning step between the retainer and the positioning rod is eliminated, thereby eliminating the wear on the retainer and the positioning rod.

[0008] The utility model is realized by the following technical solutions:

[0009] A laser pre-positioning device for punching a retainer, wherein a positioning hole is provided on the retainer, and the laser pre-positioning device comprises a punching machine, a punching tool, a feeding tool and a laser pre-positioning mechanism. The punching machine comprises a punching die and a punch to realize punching of the retainer. A positioning plate and a ratchet motor for driving the positioning plate to rotate are installed on the punching tool, and a positioning rod for cooperating with the positioning hole is provided on the positioning plate. The positioning plate is extruded and matched with the retainer to facilitate driving the retainer to rotate. A material receiving punch and a motor for driving the material receiving punch to rotate are installed on the feeding tool, and the material receiving punch is magnetically matched with the retainer to realize loading and installation of the retainer. The laser pre-positioning mechanism comprises an adjustment bracket and a laser sensor installed on the adjustment bracket, the laser sensor can detect the position of the positioning hole, and the laser sensor is connected to the motor signal, so as to facilitate rotating the retainer to the pre-positioning position, saving the time used for installing the retainer to the positioning plate, and improving the punching efficiency of the retainer.

[0010] Furthermore, the adjustment bracket includes a fixed seat, a column and a support plate. The fixed seat is provided with a longitudinal slide groove. The column is slidably connected to the longitudinal slide groove. A plurality of limit holes are provided on the column. The limit holes are evenly distributed along the extension direction of the column. A transverse slide hole matching the limit hole is provided on the support plate. The transverse slide hole is consistent with the extension direction of the support plate. The fixing bolt passes through the transverse slide hole and is inserted into the limit hole. The laser sensor is fixed to the support plate to realize the adjustment of the spatial position of the laser sensor, which is convenient for the adaptation and adjustment of the laser sensor and the holder.

[0011] Furthermore, threaded holes are provided on both sides of the fixing seat, and the fastening bolts penetrate through the threaded holes and abut against the columns, thereby clamping and fixing the columns inserted into the longitudinal sliding grooves.

[0012] Furthermore, two transverse sliding holes are provided to improve the stability of the connection between the support plate and the column, and the distance between the two transverse sliding holes is equal to the distance between two adjacent limiting holes.

[0013] Furthermore, an arc-shaped hole is opened at one end of the support plate away from the column, and an adjustment groove aligned with the arc-shaped hole is provided on the shell of the laser sensor. The adjustment bolt passes through the arc-shaped hole and is tightened to the adjustment groove to adjust the inclination angle of the laser sensor.

[0014] Furthermore, the laser sensor includes a transmitter and a receiver, and a CMOS image sensor composed of a plurality of light receiving elements is arranged in the receiver. The peak position of the received light waveform on the CMOS image sensor is changed by changing the distance from the holder. Therefore, the distance to the holder can be calculated, and then the position of the positioning hole of the holder can be determined, so as to realize the pre-positioning of the positioning hole of the holder and improve the punching efficiency of the holder.

[0015] Furthermore, a transverse slide rail is provided at the bottom of the punching tool. The punching tool has an initial position and an impact position. The punching tool can move from the initial position to the impact position along the transverse slide rail. When the punching tool moves to the impact position, the retainer installed on the positioning plate is located between the punch and the punching die, thereby realizing the movement of the retainer and facilitating the punching machine to perform punching operations on the retainer.

[0016] Furthermore, a longitudinal slide rail is provided at the bottom of the loading tooling, and the loading tooling has a loading position and a unloading position. The loading tooling can move from the loading position to the unloading position along the longitudinal slide rail. When the loading tooling is in the loading position, the loading equipment installs the retainer material to the receiving punch; when the loading tooling is in the unloading position, the receiving punch can transfer the retainer material to the positioning plate.

[0017] Furthermore, a transverse slide is provided on the loading tooling, and the material receiving punch is slidably connected to the transverse slide. The material receiving punch slides along the transverse slide to transfer the retainer to the positioning plate, thereby realizing the docking installation of the retainer and the positioning plate, which is convenient and quick.

[0018] Furthermore, a light shield is provided on the outer side of the laser pre-positioning device, and the light shield can weaken the light intensity in the area between the laser sensor and the receiving die, thereby improving the quality of light received by the receiver of the laser sensor.

[0019] Beneficial effects of the utility model:

[0020] 1. The laser sensor is used to sense the positioning hole of the retainer on the receiving punch to achieve pre-positioning of the retainer. Then the receiving punch directly installs the retainer to the positioning plate. There is no need to rotate and position the retainer when installing it, which reduces the time for the receiving punch to install the retainer on the positioning plate and improves the punching efficiency of the retainer.

[0021] 2. Since the retainer on the material receiving punch is pre-positioned in advance and the laser sensor is used to remotely rotate and position the retainer, when the material receiving punch installs the retainer to the positioning plate, the positioning hole of the retainer and the positioning rod of the positioning plate can be on the same axis. When the material receiving punch drives the retainer to move toward the positioning plate, the positioning hole of the retainer and the positioning rod of the positioning plate are plugged and fixed, and the rotational positioning step between the retainer and the positioning rod is eliminated, thereby eliminating the wear on the retainer and the positioning rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A connection diagram for illustrating a schematic implementation of a holder punching laser pre-positioning device in the utility model;

[0023] Figure 2 To illustrate Figure 1 A partial enlarged schematic diagram in the middle;

[0024] Figure 3 A schematic structural diagram for illustrating a schematic implementation of a laser pre-positioning device for punching a retainer in the utility model;

[0025] Figure 4 To illustrate Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0026] Figure 5 A structural schematic diagram for illustrating another exemplary embodiment of a holder punching laser pre-positioning device in the utility model;

[0027] Figure 6 To illustrate Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0028] Figure 7 A side view for illustrating a schematic implementation of a holder punching laser pre-positioning device in the utility model;

[0029] Figure 8 A front view for illustrating a schematic implementation of a retainer punching laser pre-positioning device in the utility model.

[0030] List of parts and reference numerals:

[0031] 1. Retainer; 11. Positioning hole; 2. Punch; 21. Punching die; 22. Punch; 3. Punching tool; 31. Positioning plate; 32. Ratchet motor; 33. Positioning rod; 34. Horizontal slide rail; 4. Loading tool; 41. Material receiving punch; 42. Motor; 43. Longitudinal slide rail; 44. Horizontal slide plate; 5. Laser pre-positioning mechanism; 51. Adjustment bracket; 511. Fixed seat; 5111. Longitudinal slide groove; 5112. Threaded hole; 512. Column; 5121. Limit hole; 513. Support plate; 5131. Horizontal slide hole; 5132. Arc hole; 52. Laser sensor; 521. Adjustment groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0034] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention are not only changes in position, but also include movements such as rotation and rolling where there is no relative change in position but a change in state.

[0035] Finally, it should be noted that when a component is referred to as being "located" or "set on" another component, it can be on the other component or there can be an intermediate component at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0036] like Figures 1 to 8 A laser pre-positioning device for punching a retainer is shown, wherein a positioning hole 11 is provided on the retainer 1, and the laser pre-positioning device comprises a punching machine 2, a punching fixture 3, a feeding fixture 4 and a laser pre-positioning mechanism 5. The punching machine 2 comprises a punching die 21 and a punch 22 to realize punching of the retainer 1. A positioning plate 31 and a ratchet motor 32 for driving the positioning plate 31 to rotate are installed on the punching fixture 3, and a positioning rod 33 cooperating with the positioning hole 11 is provided on the positioning plate 31. The positioning plate 31 is extruded and matched with the retainer 1 to facilitate driving the retainer 1 to rotate. A material receiving punch 41 and a motor 42 for driving the material receiving punch 41 to rotate are installed on the feeding fixture 4, and the material receiving punch 41 is magnetically matched with the retainer 1 to realize the loading and installation of the retainer 1. The laser pre-positioning mechanism 5 includes an adjustment bracket 51 and a laser sensor 52 installed on the adjustment bracket 51. The laser sensor 52 can detect the position of the positioning hole 11. The laser sensor 52 is connected to the motor 42 signal to facilitate rotating the retainer 1 to the pre-positioning position, saving the time used to install the retainer 1 to the positioning plate 31 and improving the punching efficiency of the retainer 1.

[0037] The retainer 1 of the present application is an unformed retainer 1, and is named retainer 1. The positioning hole 11 of the retainer 1 is located at the bottom of the bowl of the retainer 1, and the center of the positioning hole 11 does not coincide with the center of the retainer 1. If the distance between the center of the positioning hole 11 and the center of the bottom wall of the retainer 1 is set to L, the positioning hole 11 is located on a circle with the center of the bottom wall of the retainer 1 as the center and L as the radius, and this circle is set as the trajectory circle of the positioning hole 11.

[0038] When installing the laser pre-positioning device, the spatial position of the laser sensor 52 is adjusted by adjusting the bracket so that the infrared rays emitted by the laser sensor 52 to the bottom wall of the retainer 1 on the receiving punch 41 or through the positioning hole 11 to the receiving punch 41 can reach the receiver of the laser sensor 52 after reflection.

[0039] In one embodiment, first, the feeding equipment installs the retainer 1 onto the receiving punch 41 of the feeding tool 4, and the retainer 1 is magnetically matched with the receiving punch 41. At this time, the positioning holes 11 of the retainer 1 appear randomly on the trajectory circle of the positioning holes 11. The laser sensor 52 emits infrared rays to the retainer 1, and the emitted infrared rays intersect with the trajectory circle of the positioning holes 11. The motor 42 drives the receiving punch 41 to rotate, and then drives the retainer 1 to rotate. Under normal conditions, the rays emitted by the transmitter of the laser sensor 52 abut against the bottom wall of the retainer 1 and are reflected back to the receiver of the laser sensor 52. The receiver receives light at a first set distance. When the rays emitted by the transmitter pass through the positioning hole 11 of the retainer 1, abut against the outer wall of the receiving punch 41 and are reflected back to the receiver, the distance received by the receiver is the second set distance. At this time, the control device in the laser sensor 52 determines that the retainer 1 has rotated to the pre-positioning position, and the laser sensor 52 sends a stop signal to the motor 42, and the motor 42 stops operating, thereby achieving the pre-positioning of the retainer 1.

[0040] The feeding tool 4 drives the retainer 1 to move to the punching tool 3, and the material receiving punch 41 moves toward the positioning plate 31 along the transverse slide 44 of the feeding tool 4 to move the retainer 1 on the material receiving punch 41 to the positioning plate 31. When the retainer 1 is squeezed through the positioning plate 31, the positioning plate 31 clamps and fixes the retainer 1 in the opposite direction to achieve the installation of the retainer 1 to the positioning plate 31. When the retainer 1 moves toward the positioning plate 31 along the transverse slide 44, the positioning hole 11 of the retainer 1 is aligned with the positioning rod 33 of the positioning plate 31, so that the positioning rod 33 can directly pass through the positioning hole 11 to achieve the positioning installation of the retainer 1. Then the feeding tool 4 retreats to the feeding position, and the punching tool 3 moves the retainer 1 between the punch 22 and the punching die 21. The ratchet motor 32 drives the positioning plate 31 and the retainer 1 to rotate. Synchronously, the driving device drives the punch 22 to reciprocate in the vertical direction to achieve the punching operation of the retainer 1.

[0041] It should be noted that the driving mechanisms for driving the punching tool 3 to move horizontally, driving the feeding tool 4 to move longitudinally, and driving the receiving punch 41 to move along the horizontal slide 44 are all existing driving mechanisms and will not be described in detail here.

[0042] In actual production operations, when the existing equipment is used, after the receiving punch 41 brings the retainer 1 into contact with the positioning plate 31 and the positioning rod 33, the receiving punch 41 drives the retainer 1 to rotate. When the positioning hole 11 on the retainer 1 is aligned with the positioning rod 33, the positioning rod 33 extends into the positioning hole 11 to achieve the rotational positioning of the retainer 1. The time required for the entire rotational positioning is estimated to be 2 seconds, and then the punching tool 3 drives the retainer 1 to perform the punching operation, and the time required for the punching operation is estimated to be 7 seconds. When the present application is adopted, a laser pre-positioning mechanism 5 is set, and after the retainer 1 is installed on the receiving punch 41 of the feeding tool 4, the laser pre-positioning mechanism 5 directly pre-positions the retainer 1 on the receiving punch 41, so that the retainer 1 on the receiving punch 41 can be directly connected to the positioning plate 31, saving the 2 seconds required for rotational positioning, thereby improving the efficiency of the punching operation of the retainer 1. It should be noted that when the laser pre-positioning mechanism 5 is used to pre-position the retainer 1, the punching machine 2 simultaneously punches the previous retainer 1. The pre-positioning of the retainer 1 and the punching of the previous retainer 1 are performed simultaneously, saving the time required for batch processing of the retainers 1.

[0043] It should also be noted that the positioning docking between the retainer 1 and the positioning plate 31, the specific structure of the positioning plate 31, the extrusion and fixing principle of the positioning plate 31 and the retainer 1, etc., are all disclosed by the patents mentioned in the background technology, etc., which belong to the prior art and are not the focus of protection of this application, so they will not be repeated.

[0044] In one embodiment, the laser sensor 52 detects a maximum of 500 mm at high power. The laser sensor 52 stores the distance and light intensity of the reference background in advance. After the holder 1 enters the detection area, the material receiving punch 41 drives the holder 1 to rotate. If the distance or light intensity changes from the stored state, a detection is performed to determine the rotation position of the positioning hole 11 on the holder 1. The holder 1 and the material receiving punch 41 are made of different materials, and the light reflected by the holder 1 and the light reflected by the material receiving punch 41 are different in intensity. The laser detector detects the position of the holder 1 by distance and light intensity, and the detection accuracy is higher.

[0045] Preferably, the adjustment bracket 51 includes a fixing seat 511, a column 512 and a support plate 513, the fixing seat 511 is provided with a longitudinal slide groove 5111, the column 512 is slidably connected to the longitudinal slide groove 5111, the column 512 is provided with a plurality of limiting holes 5121, the limiting holes 5121 are evenly distributed along the extension direction of the column 512, the support plate 513 is provided with a transverse slide hole 5131 matching the limiting hole 5121, the transverse slide hole 5131 is consistent with the extension direction of the support plate 513, the fixing bolt passes through the transverse slide hole 5131 and is plugged into the limiting hole 5121, the laser sensor 52 is fixed to the support plate 513, so as to realize the adjustment of the spatial position of the laser sensor 52 and facilitate the adaptation and adjustment of the laser sensor 52 and the holder 1.

[0046] In one embodiment, the column 512 moves along the longitudinal slide groove 5111 on the fixing seat 511 to adjust the longitudinal position of the laser sensor 52; the support plate 513 can be connected to the limiting holes 5121 at different height positions to adjust the height position of the laser sensor 52; a transverse slide hole 5131 is provided on the support plate 513 to adjust the alignment position of the transverse slide hole 5131 and the limiting hole 5121, that is, the support plate 513 can be adjusted in the transverse direction relative to the column 512, and the position of the laser sensor 52 can be changed in the three-dimensional space by adjusting the bracket 51.

[0047] Preferably, threaded holes 5112 are provided on both sides of the fixing seat 511 , and the fastening bolts penetrate through the threaded holes 5112 and abut against the column 512 , thereby clamping and fixing the column 512 inserted into the longitudinal sliding groove 5111 .

[0048] Preferably, two transverse sliding holes 5131 are provided to improve the stability of the connection between the support plate 513 and the column 512 , and the distance between the two transverse sliding holes 5131 is equal to the distance between two adjacent limiting holes 5121 .

[0049] Preferably, an arc-shaped hole 5132 is formed at one end of the support plate 513 away from the column 512, and an adjustment groove 521 aligned with the arc-shaped hole 5132 is formed on the shell of the laser sensor 52. The adjustment bolt passes through the arc-shaped hole 5132 and is tightened to the adjustment groove 521 to adjust the inclination angle of the laser sensor 52.

[0050] In one embodiment, the adjustment slot 521 of the laser sensor 52 can be docked to multiple locations of the arc hole 5132 to facilitate adjustment of the inclination angle of the laser sensor 52 itself so that the rays of the laser sensor 52 can pass through the center of the positioning hole 11 of the retainer 1 in the pre-positioned position.

[0051] Preferably, the laser sensor 52 includes a transmitter and a receiver, and a CMOS image sensor composed of a plurality of light receiving elements is arranged in the receiver. The peak position of the received light waveform on the CMOS image sensor is changed by changing the distance from the holder 1. Therefore, the distance to the holder 1 can be calculated, and then the position of the positioning hole 11 of the holder 1 can be determined, so as to achieve the pre-positioning of the positioning hole 11 of the holder 1 and improve the punching efficiency of the holder 1.

[0052] Preferably, a transverse slide rail 34 is provided at the bottom of the punching tool 3, and the punching tool 3 has an initial position and an impact position. The punching tool 3 can move from the initial position to the impact position along the transverse slide rail 34. When the punching tool 3 moves to the impact position, the retainer 1 installed on the positioning plate 31 is located between the punch 22 and the punching die 21, thereby realizing the movement of the retainer 1, which facilitates the punching machine 2 to perform punching operations on the retainer 1.

[0053] Preferably, a longitudinal slide rail 43 is provided at the bottom of the loading tool 4, and the loading tool 4 has a loading position and a unloading position. The loading tool 4 can move from the loading position to the unloading position along the longitudinal slide rail 43. When the loading tool 4 is in the loading position, the loading equipment installs the retainer 1 material to the receiving punch 41; when the loading tool 4 is in the unloading position, the receiving punch 41 can transfer the retainer 1 material to the positioning plate 31.

[0054] Preferably, a transverse slide 44 is also provided on the loading tooling 4, and the material receiving punch 41 is slidably connected to the transverse slide 44. The material receiving punch 41 slides along the transverse slide 44 to transfer and install the retainer 1 to the positioning plate 31, thereby realizing the docking installation of the retainer 1 and the positioning plate 31, which is convenient and quick.

[0055] Preferably, a light shield is provided on the outer side of the laser pre-positioning device, which can weaken the light intensity in the area between the laser sensor 52 and the receiving die, thereby improving the quality of light received by the receiver of the laser sensor 52.

[0056] When the above-mentioned retainer punching laser pre-positioning device is used, the positioning hole 11 of the retainer 1 located on the receiving punch 41 is sensed by using a laser sensor 52 to achieve pre-positioning of the retainer 1, and then the receiving punch 41 directly installs the retainer 1 on the positioning plate 31. There is no need to rotate and position the retainer 1 when installing the retainer 1, thereby reducing the time for the receiving punch 41 to install the retainer 1 on the positioning plate 31 and improving the punching efficiency of the retainer 1.

[0057] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A laser pre-positioning device for punching a retainer, wherein a positioning hole is provided on the retainer, characterized in that: The laser pre-positioning device comprises: A punch press, comprising a punching die and a punch; A punching tool, on which a positioning plate and a ratchet motor for driving the positioning plate to rotate are installed, the positioning plate is provided with a positioning rod that matches the positioning hole, and the positioning plate is pressed and matched with the retainer; A material feeding tool, on which a material receiving punch and a motor for driving the material receiving punch to rotate are installed, and the material receiving punch is magnetically matched with the retainer; The laser pre-positioning mechanism comprises an adjustment bracket and a laser sensor mounted on the adjustment bracket, wherein the laser sensor can detect the position of the positioning hole, and the laser sensor is connected to the motor signal.

2. A holder punching laser pre-positioning device according to claim 1, characterized in that: The adjustment bracket includes a fixing seat, a column and a support plate. The fixing seat is provided with a longitudinal slide groove. The column is slidably connected to the longitudinal slide groove. The column is provided with a plurality of limiting holes. The limiting holes are evenly distributed along the extension direction of the column. The support plate is provided with a transverse slide hole that cooperates with the limiting hole. The transverse slide hole is consistent with the extension direction of the support plate. The fixing bolt passes through the transverse slide hole and is plugged into the limiting hole.

3. A holder punching laser pre-positioning device according to claim 2, characterized in that: Threaded holes are provided on both sides of the fixing seat, and the fastening bolts penetrate through the threaded holes and abut against the columns.

4. A holder punching laser pre-positioning device according to claim 2, characterized in that: There are two transverse sliding holes, and the distance between the two transverse sliding holes is equal to the distance between two adjacent limiting holes.

5. A holder punching laser pre-positioning device according to claim 2, characterized in that: An arc-shaped hole is formed at one end of the support plate away from the column, and an adjustment slot aligned with the arc-shaped hole is formed on the housing of the laser sensor, and an adjustment bolt passes through the arc-shaped hole and is tightened to the adjustment slot.

6. A holder punching laser pre-positioning device according to claim 1, characterized in that: The laser sensor includes a transmitter and a receiver, wherein a CMOS image sensor composed of a plurality of light receiving elements is arranged in the receiver.

7. A holder punching laser pre-positioning device according to claim 1, characterized in that: A transverse slide rail is provided at the bottom of the punching tool. The punching tool has an initial position and an impact position. The punching tool can move from the initial position to the impact position along the transverse slide rail. When the punching tool moves to the impact position, the retainer installed on the positioning plate is located between the punch and the punching die.

8. A holder punching laser pre-positioning device according to claim 1, characterized in that: A longitudinal slide rail is provided at the bottom of the loading tool, and the loading tool has a loading position and a unloading position. The loading tool can move from the loading position to the unloading position along the longitudinal slide rail. When the loading tool is in the loading position, the loading equipment installs the retainer material to the receiving punch; when the loading tool is in the unloading position, the receiving punch can transfer the retainer material to the positioning plate.

9. A holder punching laser pre-positioning device according to claim 6, characterized in that: The loading tool is also provided with a transverse slide, and the material receiving punch is slidably connected to the transverse slide. The material receiving punch slides along the transverse slide to transfer and install the retainer to the positioning plate.

10. A holder punching laser pre-positioning device according to claim 1, characterized in that: A light shield is sleeved on the outer side of the laser pre-positioning device, and the light shield can weaken the light intensity of the area between the laser sensor and the receiving die.

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