Bookbinding machine and positioning needle detection device therefor

Abstract

This application provides a binding machine and its positioning pin detection device. The positioning pin detection device includes a positioning pin inserted into a riveting device and movable vertically relative to the riveting device. It also includes a trigger switch and a trigger element. The trigger switch is located on the riveting device, and the trigger element is located on the positioning pin. The trigger element touches the trigger switch as the positioning pin moves, causing the trigger switch to issue a trigger signal indicating that the positioning pin is properly inserted. This application, by setting a trigger switch and a trigger element between the positioning pin and the riveting device, utilizes the trigger element to touch the trigger switch as the positioning pin moves downwards, generating a trigger signal to detect whether the positioning pin of the binding machine is properly inserted. This reduces the likelihood of riveting defects or even re-riveting due to improper positioning pin insertion, reducing binding time for users, increasing efficiency, reducing material consumption, and significantly improving the reliability and stability of binding.

Description

Technical Field

[0001] This application relates to the field of binding machine technology, and in particular to a binding machine and its positioning pin detection device. Background Technology

[0002] A binding machine is a mechanical device (manual, automatic, or fully automatic) that uses binding staples, hot melt adhesive, nylon tubing, or other materials to bind paper, plastic, leather, etc. Depending on their purpose, they can be divided into industrial binding machines and civilian binding machines, commonly used in printing plants, corporate and institutional financial offices, and archives management.

[0003] Because commercially available automatic binding machines do not check whether the positioning pin is actually inserted into the bottom of the rivet head, users may mistakenly believe that the positioning pin is inserted properly during binding, which can easily lead to errors in subsequent riveting. This problem not only wastes users' binding time and increases the binding steps, but also consumes the binding consumables required. Utility Model Content

[0004] The purpose of this application is to provide a binding machine and its positioning pin detection device that can check whether the positioning pin is inserted in place, which can effectively improve the reliability and stability of binding, has a simple structure, and also reduces the binding time and consumable consumption for users.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] As a first aspect, this application relates to a positioning pin detection device, which includes a positioning pin that is inserted into a riveting device and is movable relative to the riveting device in a vertical direction.

[0007] It also includes a trigger switch and a trigger element. The trigger switch is located on the riveting device, and the trigger element is located on the positioning pin. The trigger element touches the trigger switch as the positioning pin moves, so that the trigger switch sends a trigger signal indicating that the positioning pin is inserted into place.

[0008] The trigger includes a pressure plate for touching a trigger switch, the positioning pin has two positioning blocks, the pressure plate is located between the two positioning blocks and can move along the axial direction of the positioning pin, and a buffer is provided between the pressure plate and the positioning blocks.

[0009] It also includes a voice reminder module, which is used to issue voice reminders corresponding to different states of the positioning pin.

[0010] Further configuration: The trigger switch includes a reset switch located on the top of the riveting device.

[0011] Further configuration: The pressure plate is provided with a through hole for the positioning pin to pass through, the buffer is located between the pressure plate and the positioning block located above, and the bottom of the pressure plate abuts against the positioning block located below.

[0012] Further configuration: The buffer includes a spring, one end of which is connected to the positioning block located above, and the other end is connected to the top of the pressure plate.

[0013] Further configuration: the positions of the two positioning blocks on the positioning pin are adjustable, the positioning pin is provided with a threaded section, and the positioning hole of the positioning block through which the positioning pin passes is provided with an internal thread that is threadedly connected to the threaded section.

[0014] Further settings include a timer, which is used to detect three metrics: action response time, action duration, and timeout threshold.

[0015] As a second aspect, this application relates to a binding machine, which includes a base, a rivet tube cutting device, a drilling device, a riveting device, and a positioning pin detection device, wherein the positioning pin detection device is the positioning pin detection device as described above.

[0016] Further configuration: The riveting device includes a riveting sliding block, an upper riveting assembly, and a lower riveting assembly. The upper riveting assembly is located at the bottom of the riveting sliding block, and the lower riveting assembly is located directly below the upper riveting assembly. The positioning pin passes through the riveting sliding block and the upper riveting assembly and moves to insert into the lower riveting assembly. The trigger switch is located at the top of the riveting sliding block.

[0017] Compared with existing technologies, the solution in this application has the following advantages:

[0018] 1. In the positioning pin detection device involved in this application, a trigger switch and a trigger element are set between the positioning pin and the riveting device. The trigger element touches the trigger switch as the positioning pin moves downward, so that the trigger switch generates a trigger signal to detect whether the positioning pin of the binding machine is inserted in place. This reduces the occurrence of unqualified riveting or even re-riveting due to the positioning pin not being inserted in place, reduces the binding time for users, improves efficiency, reduces the consumption of consumables, and greatly improves the reliability and stability of binding.

[0019] 2. In the positioning pin detection device of this application, the trigger switch is set on the top of the riveting sliding block. The trigger switch is touched by a pressure plate connected with a buffer. The buffer can buffer the energy when the pressure plate collides with the trigger switch, so as to reduce the impact force of the pressure plate on the trigger switch, reduce the wear of the trigger switch, and extend its service life. Since the trigger switch is set on the top of the riveting sliding block, it is convenient for workers to inspect the trigger switch. It also avoids the trigger switch being subjected to multiple unbuffered impacts from the positioning pin when it is set in the lower riveting assembly, thus reducing the wear of the trigger switch.

[0020] 3. In the positioning pin detection device involved in this application, a reminder module is set to remind the worker whether the positioning pin is inserted in place, thereby enhancing the human-machine interaction effect and enabling the worker to adjust the position of the material to be bound and the positioning pin in a timely manner, improving binding efficiency and ensuring binding consistency.

[0021] 4. In the binding machine involved in this application, by setting a positioning pin detection device, when the bottom end of the positioning pin is inserted into the target position of the lower riveting component, the trigger element on the positioning pin touches the trigger switch to generate a positioning signal. The physical trigger combined with electrical feedback solves the problem of riveting failure caused by incomplete insertion. The electrical feedback can be seamlessly connected to the control system, reducing the cost of manual intervention.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram showing the cooperation between the positioning pin detection device and the riveting device in the binding machine of this application;

[0025] Figure 2 This is a schematic diagram of the internal connection between the positioning pin detection device and the riveting device in the binding machine of this application;

[0026] Figure 3 This is a schematic diagram showing the cooperation between the positioning pin detection device and the riveting device in the binding machine of this application when the positioning pin is inserted into place.

[0027] Figure 4 This is a schematic diagram of the trigger element in the positioning pin detection device of this application.

[0028] In the figure, 1 is the positioning pin detection device; 11 is the positioning pin; 12 is the trigger switch; 13 is the trigger element; 131 is the pressure plate; 132 is the buffer element; 133 is the positioning block; 14 is the pin cap; 2 is the riveting device; 21 is the riveting sliding block; 22 is the upper riveting assembly; and 23 is the lower riveting assembly. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] It should be understood that the steps described in the method embodiments of this utility model may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this utility model is not limited in this respect.

[0031] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "connection" can refer to a direct connection or an indirect connection via intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this utility model are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to necessarily be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] Please combine Figures 1 to 4 This application relates to a positioning pin detection device 1, which is used in a binding machine. It includes a positioning pin 11 inserted into the riveting device 2 of the binding machine. By detecting whether the positioning pin 11 is inserted into the riveting device 2, the binding error problem can be reduced, the binding time of users can be reduced, the consumables loss caused by binding errors can be reduced, and the cost can be reduced.

[0034] Specifically, the positioning pin 11 is inserted into the riveting device 2 and moves vertically relative to the riveting device 2. The positioning pin detection device 1 of this application also includes a trigger switch 12 and a trigger element 13. The trigger switch 12 is disposed on the riveting device 2, and the trigger element 13 is disposed on the positioning pin 11. When the positioning pin 11 moves relative to the riveting device 2, the trigger element 13 moves with the positioning pin 11 and touches the trigger switch 12, so that the trigger switch 12 sends a trigger signal that the positioning pin 11 is inserted into the correct position. The trigger signal can be transmitted to the main control system of the binding machine through the control circuit to confirm that the positioning pin 11 has reached the target position before proceeding to the next binding operation.

[0035] In this embodiment, the trigger switch 12 includes a reset switch. When the trigger element 13 touches the reset switch, it closes momentarily, generating a telecommunications confirmation that the connection is successful. As the positioning pin 11 moves upward, it causes the trigger element 13 to move away from the reset switch, and the reset switch automatically resets to its initial state without manual intervention. The reset switch can be a push-button type.

[0036] In this embodiment, the trigger 13 includes a pressure plate 131. The area of ​​the pressure plate 131 is larger than the size of the reset switch, ensuring that the reset switch is within the projection range of the pressure plate 131 and guaranteeing the pressing effect of the pressure plate 131 on the reset switch. To reduce the false alarm rate, the reset switch in this embodiment can also integrate a pressure sensor. When the external force applied by the pressure plate 131 to the reset switch reaches a threshold, the pressure sensor outputs an analog signal. The main control system of the binding machine confirms that the insertion force of the positioning pin 11 is up to standard by comparing it with a preset value. If the pressure does not reach the threshold, the main control system will determine that the insertion is abnormal. Therefore, in a reset switch with an integrated pressure sensor, both the reset switch contact closure and the pressure signal must be up to standard for the trigger 13 to generate a trigger signal.

[0037] Furthermore, the pressure plate 131 is sleeved on the positioning pin 11. The pressure plate 131 has a through hole for the positioning pin 11 to pass through, and the pressure plate 131 can move along the axial direction of the positioning pin 11. A buffer 132 is provided between the pressure plate 131 and the positioning pin 11. When the positioning pin 11 descends too quickly, the pressure plate 131 will cause a large impact force on the reset switch. When the pressure plate 131 hits the reset switch, it slides relative to the positioning pin 11 under the reaction force of the reset switch. At the same time, the buffer 132 undergoes elastic deformation, which can offset part of the impact force between the pressure plate 131 and the reset switch, thereby reducing the impact force of the pressure plate 131 on the reset switch, protecting the reset switch and extending its service life.

[0038] The buffer 132 in this embodiment includes a spring, one end of which is fixed to the positioning pin 11, and the other end is connected to the top of the pressure plate 131.

[0039] Furthermore, prolonged impact and compression can lead to spring fatigue and displacement of the pressure plate 131, preventing it from contacting the reset switch and affecting the detection result of whether the positioning pin 11 is properly inserted. In this embodiment, two positioning blocks 133 are provided on the positioning pin 11, and the pressure plate 131 slides between the two positioning blocks 133. The two positioning blocks 133 define the upper and lower limits of the pressure plate 131's sliding position. The end of the spring that connects to the positioning pin 11 is connected to the upper positioning block 133, and the bottom surface of the pressure plate 131 abuts against the lower positioning block 133. Therefore, this application achieves the dual functions of precise positioning and buffering of the pressure plate 131 through the combination of the rigid limiting block and the spring.

[0040] Furthermore, the positions of the two positioning blocks 133 on the positioning pin 11 are adjustable. The positioning pin 11 is provided with a threaded section extending along its axial direction. The positioning holes of the two positioning blocks 133 through which the positioning pin 11 passes are provided with internal threads that match the threaded sections, so that the two positioning blocks 133 are threadedly connected to the positioning pin 11 and the position of the positioning blocks 133 on the positioning pin 11 can be adjusted by rotation, thereby achieving the purpose of adjusting the position of the pressure plate 131.

[0041] To prevent misoperation, scale lines can be laser-engraved on the surface of the positioning pin 11 to achieve visual adjustment. At the same time, a limit pin can be added to the positioning block 133 to prevent the positioning block 133 from rotating beyond its travel range and improve the stability of the positioning block.

[0042] The positioning pin detection device 1 also includes a reminder module. After the trigger switch 12 sends a trigger signal to the main control system of the binding machine, the main control system controls the reminder module to issue a reminder action indicating that the positioning pin 11 has been inserted in place before proceeding to the next riveting operation. In this embodiment, the reminder module is a voice reminder module. After the trigger signal is confirmed, it immediately plays a voice prompt saying "the positioning pin 11 is inserted in place." The operator can know the status without visual confirmation. The main control system can force the completion of the voice prompt before unlocking the riveting permission.

[0043] Furthermore, the positioning pin detection device 1 includes a timer. When the positioning pin 11 moves downward relative to the riveting device 2, the timer further determines whether the positioning pin 11 is properly inserted based on three indicators: action response time, action duration, and timeout threshold. The action response time is the time interval between the positioning pin 11 falling to the designated position; the action duration is the holding time of the positioning pin 11 after insertion; and the timeout threshold is the maximum allowable tolerance time for the aforementioned action response time and action duration. Therefore, this application can improve the detection accuracy of the positioning pin 11 through a dual detection mechanism of physical triggering and time parameter verification, preventing misoperation and improving binding efficiency and security.

[0044] If either the physical trigger or the time parameter verification fails, the positioning pin 11 cannot be effectively inserted within the preset time window, which is considered abnormal. In this case, the main control system does not receive the relevant trigger signal and controls the voice reminder module to issue a voice reminder that "positioning pin 11 is not inserted in place" to remind the worker to adjust the position of the positioning pin 11 in time to ensure binding safety and avoid affecting the quality of subsequent riveting binding.

[0045] In other embodiments, the reminder module can also be configured as an indicator light reminder module. Depending on the different states of the positioning pin 11, the indicator light reminder module can emit different colored light signals to indicate the state of the positioning pin 11. For example, a red light indicates that the positioning pin 11 has not been triggered, a green light indicates that the trigger signal has been confirmed, at which point the riveting permission is unlocked. A yellow light can also be added to indicate sensor malfunctions. The indicator light reminder module supports long-distance, rapid identification and is suitable for noisy production line environments.

[0046] The reminder module includes, but is not limited to, the voice reminder module and the indicator light reminder module mentioned above. In actual production, different reminder modules can be selected according to the actual situation to ensure the smooth progress of the riveting work.

[0047] The top of the positioning pin 11 is also provided with a pin cap 14, which is made of soft silicone material. The pin cap 14 covers the metal tip of the positioning pin 11, eliminating the risk of operator being punctured and meeting the head protection standards for machining.

[0048] The positioning pin detection device 1 of this application sets a trigger switch 12 and a trigger element 13 between the positioning pin 11 and the riveting device 2. The trigger element 13 touches the trigger switch 12 as the positioning pin 11 moves downward, so that the trigger switch 12 generates a trigger signal to detect whether the positioning pin 11 of the binding machine is inserted in place. This reduces the occurrence of unqualified riveting or even re-riveting due to the positioning pin 11 not being inserted in place, reduces the binding time for users, improves efficiency, reduces the consumption of consumables, and greatly improves the reliability and stability of binding.

[0049] The spring between the pressure plate 131 and the positioning pin 11 can buffer the impact force of the pressure plate 131 on the reset switch, which can effectively extend the service life of the reset switch.

[0050] This application also relates to a binding machine, which includes a base, a rivet tube cutting device, a drilling device, a riveting device 2, and a positioning pin detection device 1 as described above. The rivet tube cutting device, the drilling device, the riveting device 2, and the positioning pin detection device 1 are all mounted on the base. The rivet tube cutting device cuts rivet tubes of a corresponding length according to the set target rivet tube length for binding and riveting by the binding machine. The drilling device is used to drill holes at preset positions on the material to be bound. The riveting device 2 is used to convert the rivet tube inserted into the material to be bound at the drilled position into a non-removable and secure material. The positioning pin 11 passes through the rivet tube to provide spatial position calibration, which can ensure the consistency, accuracy, and reliability of the binding process.

[0051] The riveting device 2 includes a sliding riveting block, an upper riveting assembly 22, and a lower riveting assembly 23. The upper riveting assembly 22 is located at the bottom of the sliding riveting block, and the lower riveting assembly 23 is located directly below the upper riveting assembly 22. The workpiece to be bound can be placed between the upper riveting assembly 22 and the lower riveting assembly 23. The sliding riveting block drives the upper riveting assembly 22 to move closer to the lower riveting assembly 23, so that the rivet tube is riveted onto the material to be bound by the upper riveting assembly 22 and the lower riveting assembly 23. The positioning pin 11 of the positioning pin detection device 1 passes through the riveting slider and the upper riveting assembly 22 and is inserted into the lower riveting assembly 23. The positioning pin 11 calibrates the position of the rivet tube to ensure the alignment accuracy between the rivet tube and the binding hole, reduce binding errors, and improve binding consistency.

[0052] The trigger switch 12 in the positioning pin detection device 1 is located on the top of the riveting sliding block 21. The lower riveting assembly 23 is provided with an insertion hole for the bottom of the positioning pin 11. In this embodiment, the bottom of the insertion hole is the target position for the positioning pin 11 to be inserted into the lower riveting assembly 23. By inserting the positioning pin 11 into the target position of the lower riveting assembly 23, the bottom of the positioning pin 11 is inserted into place, thereby satisfying the binding conditions of the automatic binding machine.

[0053] The riveting sliding block 21 has a guide groove for the positioning pin 11 to slide, which restricts the movement path of the positioning pin 11, eliminates radial deviation of the positioning pin 11, and avoids eccentricity of the formed rivet tube after subsequent riveting, thus serving as a foolproof mechanism. In addition, a miniature thin-film pressure sensor is provided on the groove wall of the riveting sliding block 21, which can collect the contact pressure between the positioning pin 11 and the groove wall in real time. When the pressure applied by the positioning pin 11 to the groove wall of the riveting sliding block 21 is greater than a threshold, it can be determined that the movement path of the positioning pin 11 has deviated, and the operator should be promptly reminded to adjust the position of the positioning pin 11 or the lower riveting assembly 23.

[0054] After the positioning pin 11 is inserted into the lower riveting assembly 23, the pressure plate 131 on the positioning pin 11 touches the trigger switch 12 on the top of the riveting sliding block 21 to detect whether the positioning pin 11 is properly inserted. This physical triggering, combined with electrical feedback, addresses issues such as misoperation, equipment damage, and quality control failure in the riveting process, achieving a hard connection between the mechanical positioning signal and the electrical control system. This constructs a highly reliable, safe, and efficient closed-loop riveting process. Furthermore, by placing the trigger switch 12 on the top of the riveting sliding block 21, this application avoids the situation where the switch is located in the lower riveting assembly 23 and is subjected to repeated, unbuffered impacts from the positioning pin 11, resulting in severe wear and increased replacement costs. This effectively reduces costs and extends service life.

[0055] This application also discloses a method of using the above-mentioned binding machine. This embodiment uses a bound document as the binding material for detailed description, and specifically includes the following steps:

[0056] First, a hole is drilled at the preset position of the document to be bound. The document to be bound is placed on the base and below the drilling device. The elastic patch is used to ensure the stability of the horizontal and vertical positions, so that the target hole position of the document to be bound is directly below the drill bit. Then the drilling device is started, and its drill bit rotates and descends to drill into the material to be bound. The drilling depth is controlled by a preset program or controller to drill a hole at the preset position of the document to be bound.

[0057] The rivet tube of the target length is cut from the rivet tube cutting device and inserted into the preset position hole of the document to be bound. The rivet tube cutting device cuts the long rivet tube into multiple rivet tube segments of the target length according to the set requirements. The length of the cut rivet tube segments must satisfy L=δ + K×d, where L is the length of the rivet tube, δ is the total thickness of the material to be bound, d is the diameter of the rivet tube, and K is the expansion coefficient of the rivet tube. The expansion coefficient is related to the material of the rivet tube, and it is necessary to ensure that the end of the rivet tube can deform sufficiently to lock with the binding material when riveted into the binding material.

[0058] The binding material is transferred to the area below the riveting device 2. Before riveting the rivet tube to the binding material using the riveting device 2, the positioning pin 11 of the positioning pin detection device 1 is inserted downwards through the rivet tube and into the insertion hole of the lower riveting assembly 23. This is to calibrate the riveting position using the positioning pin 11, ensuring the quality of the riveting. When the bottom end of the positioning pin 11 is inserted into the lower riveting assembly 23, the trigger element 13 on the positioning pin 11 touches the trigger switch 12 on the riveting sliding block 21. The trigger switch 12 generates a trigger signal, allowing the next riveting operation to proceed. The reminder module indicates that the positioning pin 11 is properly inserted. If the positioning pin 11 is inserted but its trigger element 13 does not touch the trigger switch 12, or if the trigger element 13 touches the trigger switch 12 for a preset duration, the main control system does not receive the corresponding trigger signal. The main control system then controls the reminder module to issue a warning that the positioning pin 11 is not properly inserted, allowing the operator to adjust the position of the rivet tube in time, ensuring the smooth progress of subsequent riveting and improving the accuracy of the riveting.

[0059] With the positioning pin 11 inserted in place, the riveting device 2 is activated. The riveting sliding block 21 drives the upper riveting assembly 22 to move downward. The upper riveting assembly 22 and the lower riveting assembly 23 deform the two ends of the riveting tube to rivet and fix it in the hole position of the binding document, thereby completing the binding of the document.

[0060] In summary, the binding machine of this application, by setting up a positioning pin detection device 1, generates a positioning signal by having the bottom end of the positioning pin 11 touch the trigger switch 12 through the trigger element 13 on the positioning pin 11 when it is inserted into the target position of the lower riveting component 23. The physical trigger combined with electrical feedback solves the problem of riveting failure caused by incomplete insertion. The electrical feedback can be seamlessly connected to the control system, reducing the cost of manual intervention.

[0061] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A positioning needle detection device, characterized by, Includes a positioning pin, which is inserted into the riveting device and can move vertically relative to the riveting device; It also includes a trigger switch and a trigger element. The trigger switch is located on the riveting device, and the trigger element is located on the positioning pin. The trigger element touches the trigger switch as the positioning pin moves, so that the trigger switch sends a trigger signal indicating that the positioning pin is inserted into place. The trigger includes a pressure plate for touching a trigger switch, the positioning pin is provided with two positioning blocks, the pressure plate is located between the two positioning blocks and can move along the axial direction of the positioning pin, and a buffer is provided between the pressure plate and the positioning blocks; It also includes a voice reminder module, which is used to issue voice reminders corresponding to different states of the positioning pin.

2. The needle detection device of claim 1, wherein, The trigger switch includes a reset switch located on top of the riveting device.

3. The positioning pin detection device according to claim 1, characterized in that, The pressure plate has a through hole for the positioning pin to pass through, the buffer is located between the pressure plate and the positioning block located above, and the bottom of the pressure plate abuts against the positioning block located below.

4. The positioning pin detection device according to claim 3, characterized in that, The buffer includes a spring, one end of which is connected to the positioning block located above, and the other end of which is connected to the top of the pressure plate.

5. The positioning pin detection device according to claim 4, characterized in that, The positions of the two positioning blocks on the positioning pin are adjustable. The positioning pin is provided with a threaded section, and the positioning hole of the positioning block through which the positioning pin passes is provided with an internal thread that is threadedly connected to the threaded section.

6. The positioning pin detection device according to claim 1, characterized in that, It also includes a timer, which is used to detect three metrics: action response time, action duration, and timeout threshold.

7. A binding machine, characterized in that, It includes a base, a rivet tube cutting device, a drilling device, a riveting device, and a positioning pin detection device, wherein the positioning pin detection device is the positioning pin detection device as described in any one of claims 1-6.

8. The binding machine according to claim 7, characterized in that, The riveting device includes a riveting sliding block, an upper riveting assembly, and a lower riveting assembly. The upper riveting assembly is located at the bottom of the riveting sliding block, and the lower riveting assembly is located directly below the upper riveting assembly. The positioning pin passes through the riveting sliding block and the upper riveting assembly and moves to insert into the lower riveting assembly. The trigger switch is located at the top of the riveting sliding block.

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