Handheld riveting device

Abstract

The utility model relates to the technical field of pressing rivet machining, and discloses a handheld riveting device which comprises an inner cylinder and an outer cylinder axially and slidably sleeved at one end of the inner cylinder. Two clamping jaws for clamping a workpiece are arranged at the other end of the inner cylinder body; a driving assembly for driving the two clamping jaws to be opened or closed is arranged in the inner barrel. The device further comprises a triggering mechanism for triggering the driving assembly when the inner barrel slides in place relative to the outer barrel, and a releasing mechanism for releasing the triggering state of the triggering mechanism. The handheld riveting device can be held by one hand of an operator, riveting is conducted immediately after a wire is clamped, the production efficiency is improved, and manpower resources are saved; the clamping jaw directly extending into the workpiece is used for clamping the hardware pin, the applicability is wide, the cost is low, and a mold does not need to be customized according to the shape of the workpiece like a riveting press; the fool-proof design that the clamping jaws are triggered to be closed by pressing the outer cylinder body is used, and the industrial injury risk is effectively avoided; the utility model has the advantages of strong practicability and very high popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure riveting processing, in particular to a handheld riveting device. Background Art

[0002] The riveting process is often used when other parts or components need to be installed on sheet metal parts. The principle is to press the embossed teeth into the preset holes of the sheet metal. Generally speaking, the diameter of the preset hole is slightly smaller than the embossed teeth of the rivet nut. The pressure causes the rivet nut's teeth to squeeze into the plate, causing the periphery of the hole to undergo plastic deformation. The deformed object is squeezed into the guide groove, thereby producing a locking effect. During the processing of the power adapter, it is necessary to connect the AC line to the hardware pin inside it. In the prior art, the worker first inserts the copper wire into the installation groove on the hardware pin, and then places the workpiece on the lower die of the riveting press. The riveting press presses the workpiece into the lower die of the riveting press. Riveting the hardware pins makes them bend and deform to lock the copper wire in the installation slot to complete the riveting. In actual production, workers cannot rivet the copper wire immediately after clamping it. The workpiece needs to be transferred to the fixture of the riveting machine in the next process for riveting by a dedicated person. During the transfer, the copper wire is easy to fall off from the installation slot and cannot be riveted after falling off. The wire needs to be clamped again, resulting in low production efficiency. Moreover, when riveting different types of workpieces, it is necessary to customize the fixture according to their appearance, which increases the production cost. The existing riveting machine can no longer meet the production needs, and a new type of riveting equipment is urgently needed to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to provide a handheld riveting device to address the deficiencies of the prior art, and the handheld riveting device can well solve the above problems.

[0004] In order to achieve the above requirements, the technical solution adopted by the utility model to solve its technical problems is:

[0005] The utility model provides a handheld riveting device, comprising an inner cylinder, an outer cylinder axially slidably sleeved on one end of the inner cylinder; the other end of the inner cylinder is provided with two clamping claws for clamping a workpiece; the interior of the inner cylinder is provided with a driving component for driving the two clamping claws to open or close; the device also comprises a trigger mechanism for triggering the driving component when the inner cylinder slides into place relative to the outer cylinder, and a releasing mechanism for releasing the trigger state of the trigger mechanism.

[0006] The handheld riveting device described in the utility model, wherein the driving assembly includes a piston axially slidably arranged inside the inner cylinder, an air cavity is enclosed between the upper end surface of the piston and the inner side wall of the inner cylinder; an air nozzle for supplying air to the air cavity is axially penetrated through the inner cylinder, and a first through hole is provided on the outer cylinder to avoid the air nozzle; the upper ends of the two clamping jaws are provided with extensions extending into the inner cylinder, the lower end of the piston is provided with a receiving groove, and the inner side wall of the receiving groove is provided with a guiding inclined surface for guiding the extension to enter; the two extensions drive the two clamping jaws to move closer to or away from each other along the guiding inclined surface.

[0007] The handheld riveting device described in the utility model, wherein the trigger mechanism includes a sensor for sensing the distance between the upper end surface of the inner cylinder and the top surface of the outer cylinder, and also includes a controller electrically connected to the sensor; the sensor is arranged in the outer cylinder.

[0008] The handheld riveting device described in the utility model, wherein the releasing mechanism includes a guide column and a first spring sleeved on the guide column; the lower end of the guide column is fixed on the inner cylinder, and the upper end of the outer cylinder is provided with a second through hole corresponding to the guide column; the guide column is slidably inserted into the second through hole; the upper end of the first spring is tightly pressed against the inner wall of the outer cylinder.

[0009] The handheld riveting device described in the utility model, wherein the piston includes a first columnar portion and a second columnar portion connected side by side up and down; the device also includes a second spring axially arranged inside the inner cylinder, the upper end of the second spring is sleeved on the second columnar portion; the upper end surface of the second spring is against the lower end surface of the first columnar portion.

[0010] The handheld riveting device of the utility model further comprises a third spring for pushing the two extension parts away from each other, and the two ends of the third spring are respectively connected to the two extension parts; the lower end of the second spring is sleeved on the two extension parts.

[0011] The handheld riveting device described in the utility model is characterized in that a mounting seat is provided on the lower end surface of the inner cylinder, and an opening is longitudinally opened on the mounting seat for the two clamping jaws to extend out of the inner cylinder; the lower end surface of the third spring is tightly abutted against the upper end surface of the mounting seat; the front and rear side surfaces of the clamping jaws are arranged tightly against the inner side wall of the mounting seat; a fixed shaft is horizontally penetrated on the mounting seat; and the middle parts of the two clamping jaws are connected in a scissor-like manner through the fixed shaft.

[0012] The handheld riveting device of the utility model, wherein the first columnar portion is sleeved with a sealing ring, and the outer surface of the sealing ring and the inner side wall of the inner cylinder body are pressed against each other.

[0013] The handheld riveting device described in the utility model, wherein two positioning pieces are respectively arranged at the front and rear ends of the mounting seat; the positioning pieces are arranged along the length direction of the clamping claws, and the lower end of the positioning piece is provided with a positioning groove to prevent the copper wire from lateral displacement.

[0014] The handheld riveting device of the utility model further comprises an air outlet hole connecting the air cavity and the outer cylinder, and the air outlet hole is located above the first columnar portion.

[0015] The beneficial effects of the utility model are as follows: when the utility model is in use, a worker clamps the copper wire into the installation groove on the hardware pin with one hand, and holds the outer cylinder with one hand with the other hand, aligns the two clamping claws with the installation groove, and presses down the outer cylinder; because the clamping claws at the lower end of the inner cylinder are pressed against the hardware pin at this time, the inner cylinder remains stationary, and the outer cylinder slides down relative to the inner cylinder; after the outer cylinder slides down to the right position, the trigger mechanism starts the driving component, and the two clamping claws are closed and clamped, so that the hardware pin is deformed and locks the copper wire in the installation groove; after the riveting is completed, the release mechanism releases the trigger state, the outer cylinder is reset, and the driving component is also closed to use The two clamping jaws are released; the handheld riveting device provided by the utility model can be held by an operator with one hand, and riveting can be done immediately after the wire is clamped, and two processes in the prior art are combined into one process, saving human resources; the use of clamping jaws that directly extend into the workpiece to clamp the hardware pins has wide applicability and low cost, and there is no need to customize the mold according to the shape of the workpiece like a riveting press; the fool-proof design of pressing down the outer cylinder to trigger the closing of the clamping jaws effectively avoids the risk of pinching fingers during operation; the utility model greatly improves the production efficiency, is highly practical, and has a high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0017] Figure 1 It is a schematic diagram of the overall structure of the handheld riveting device of the utility model.

[0018] Figure 2 yes Figure 1 Enlarged schematic diagram at point A in the middle.

[0019] Figure 3 It is a cross-sectional view of the handheld riveting device of the utility model.

[0020] Figure 4 It is a longitudinal sectional view of the handheld riveting device of the utility model from another viewing angle.

[0021] In the figure: 1, inner cylinder; 1a, air outlet; 2, outer cylinder; 21, first through hole; 22, second through hole; 3, clamping claw; 31, extension part; 4, piston; 4a, accommodating groove; 4b, guiding slope; 41, first columnar part, 42; second columnar part; 5, air cavity; 6, air nozzle; 7, sensor; 8, guide column; 9, first spring; 10, second spring; 11, third spring; 12, mounting seat; 121, opening; 13, fixed shaft; 14, sealing ring; 15, positioning piece; 151, positioning groove; a, copper wire; b, mounting groove; c, hardware pin. DETAILED DESCRIPTION

[0022] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0025] Moreover, the terms "up, down, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0027] The handheld riveting device of the preferred embodiment of the utility model is as follows Figure 1-4 As shown, it includes an inner cylinder 1, an outer cylinder 2 axially slidably sleeved on one end of the inner cylinder 1; the other end of the inner cylinder 1 is provided with two clamping claws 3 for clamping a workpiece; the inner cylinder 1 is provided with a driving assembly for driving the two clamping claws 3 to open or close; the device also includes a trigger mechanism for triggering the driving assembly when the inner cylinder 1 slides into place relative to the outer cylinder 2, and a releasing mechanism for releasing the triggering state of the trigger mechanism; in this embodiment, the outer cylinder 2 is for workers to hold, and an anti-slip design is provided on the outer side wall of the outer cylinder 2; the outer cylinder 2 is shorter than the inner cylinder 1, and the lower end of the inner cylinder 1 extends out of the outer cylinder 2 and is connected with the clamping claw 3; two protrusions are provided on the hardware pin c of the workpiece, and a mounting groove b is formed between the two protrusions, and the copper wire a passes through the mounting groove b. When riveting, the two clamping claws 3 contact the two protrusions respectively, so that the two protrusions are close to each other and deformed, and the copper wire a is locked in the mounting groove b; the releasing mechanism plays a role in resetting the clamping claw 3, the inner cylinder 1 and the outer cylinder 2.

[0028] When the utility model is used, a worker clamps the copper wire into the installation groove on the hardware pin with one hand, and holds the outer cylinder with one hand with the other hand, aligns the two clamping claws with the installation groove, and presses down the outer cylinder; at this time, the clamping claws at the lower end of the inner cylinder are pressed against the hardware pin, the inner cylinder remains stationary, and the outer cylinder slides down relative to the inner cylinder; after the outer cylinder slides down to the right position, the trigger mechanism starts the driving component, and the two clamping claws are closed and clamped, so that the hardware pin is deformed and locks the copper wire in the installation groove; after the riveting is completed, the release mechanism releases the trigger state, the outer cylinder is reset, and the driving component is also closed to release the two clamping claws. ; The handheld riveting device provided by the utility model can be held by an operator with one hand, and riveting can be done immediately after the wire is clamped, combining the two processes in the prior art into one process, saving human resources; using claws that directly extend into the workpiece to clamp the hardware pins, it has wide applicability and low cost, and does not need to customize the mold according to the shape of the workpiece like a riveting press; the fool-proof design of using the outer cylinder to press down to trigger the closing of the claws effectively avoids the risk of pinching fingers during operation; the utility model greatly improves production efficiency, is highly practical, and has a high promotion value.

[0029] Preferably, the driving assembly includes a piston 4 axially slidably arranged inside the inner cylinder 1, and an air cavity 5 is enclosed between the upper end surface of the piston 4 and the inner side wall of the inner cylinder 1; an air nozzle 6 for supplying air to the air cavity 5 is axially penetrated on the inner cylinder 1, and a first through hole 21 is provided on the outer cylinder 2 to avoid the air nozzle 6; the upper ends of the two clamping jaws 3 are provided with an extension portion 31 extending into the inner cylinder 1, and a receiving groove 4a is provided at the lower end of the piston 4, and a guiding inclined surface 4b for guiding the extension portion 31 to enter is provided on the inner side wall of the receiving groove 4a; the two extension portions 31 drive the two clamping jaws 3 to move closer to or away from each other along the guiding inclined surface 4b; in this embodiment, the driving assembly adopts a pneumatic structure with low cost, and the hollow cylindrical structure of the inner cylinder 1 is more suitable for the sliding of the piston 4; the air nozzle 6 Fixed at the upper end of the inner cylinder 1, the lower end of the air nozzle 6 penetrates the inner cylinder 1 into the air cavity 5, and the upper end extends axially outward to connect to the air inlet pipe. The upper end of the outer cylinder 2 avoids the air nozzle 6 and the air inlet pipe to set the first through hole 21; the two extensions 31 are consistent with the movement direction of the clamping jaws 3. When the two extensions 31 are separated, the two clamping jaws 3 are separated, and when the two extensions 31 are close, the two clamping jaws 3 are closed; the proximal ends of the two clamping jaws 3 are provided with clamping grooves corresponding to the mounting grooves b; the accommodating groove 4a in the piston 4 is provided with a guiding inclined surface 4b, and the entire accommodating groove 4a is conical. When the piston 4 moves downward, the two extensions 31 are covered in the accommodating groove 4a, and the two extensions 31 are close to each other along the guiding inclined surface 4b of the accommodating groove 4a, thereby driving the clamping jaws 3 to clamp.

[0030] Preferably, the trigger mechanism includes a sensor 7 for sensing the distance between the upper end surface of the inner cylinder 1 and the top surface of the outer cylinder 2, and also includes a controller electrically connected to the sensor 7; the sensor 7 is arranged in the outer cylinder 2; in this embodiment, the sensor 7 is an infrared sensor, and in some other embodiments, a visual sensor or a laser sensor can also be used; the sensor 7 is fixed at the upper end of the outer cylinder 2, and the sensing probe of the sensor 7 extends into the outer cylinder 2 and is arranged toward the upper end surface of the inner cylinder 1. When the outer cylinder 2 and the inner cylinder 1 move relative to each other, the distance between the upper end surface of the inner cylinder 1 and the upper end of the outer cylinder 2 changes, and the sensor 7 receives the signal and transmits it to the controller, thereby controlling the opening and closing of the driving mechanism; the wire connecting the sensor 7 to the controller is fixed together with the air inlet pipe extending into the outer cylinder 2 and connected to the air nozzle 6, so that the structure is simpler and more compact.

[0031] Preferably, the release mechanism includes a guide column 8 and a first spring 9 sleeved on the guide column 8; the lower end of the guide column 8 is fixed on the inner cylinder 1, and the upper end of the outer cylinder 2 is provided with a second through hole 22 corresponding to the guide column 8; the guide column 8 is slidably penetrated into the second through hole 22; the upper end of the first spring 9 is tightly pressed against the inner wall of the outer cylinder 2; the guide column 8 is a bolt, the lower end of the bolt is locked on the inner cylinder 1, and the upper end passes through the second through hole 22; when the outer cylinder 2 is pressed down, the inner cylinder 1 and the guide column 8 remain stationary, and the second through hole 22 is in an inverted "convex" shape, only for the nut at the upper end of the bolt to pass through, and the inner wall of the outer cylinder 2 is tightly pressed against the first spring 9, and the first spring 9 is pressed down, and the bolt is exposed through the second through hole 22; after the outer cylinder 2 is loosened, the elastic force of the first spring 9 props up the outer cylinder 2 to reset it.

[0032] Preferably, the piston 4 includes a first columnar portion 41 and a second columnar portion 42 connected side by side up and down; the device also includes a second spring 10 axially arranged inside the inner cylinder 1, and the upper end of the second spring 10 is sleeved on the second columnar portion 42; the upper end surface of the second spring 10 is against the lower end surface of the first columnar portion 41; the cross-sectional area of ​​the second columnar portion 42 is smaller than the cross-sectional area of ​​the first columnar portion 41, and the second spring 10 is tightly against the lower end of the first columnar portion 41, which can prevent the first columnar portion 41 from escaping from the second spring 10; the second spring 10 is provided to allow the piston 4 to automatically reset after movement.

[0033] Preferably, the device also includes a third spring 11 that pushes the two extensions 31 away from each other, and the two ends of the third spring 11 are respectively connected to the two extensions 31; the lower end of the second spring 10 is sleeved on the two extensions 31; the proximal ends of the two extensions 31 are provided with grooves for the third spring 11 to extend into, and the third spring 11 is in a compressed state in the groove and will not fall out; the third spring 11 applies a force of separation to the two extensions 31, so that the two extensions 31 are separated, and the two clamping jaws 3 are separated at the same time; and the two extensions 31 are located in the second spring 10, which limits the distance between the two extensions 31, so that the piston 4 can smoothly put the extension 31 into the accommodating groove 4a when it moves.

[0034] Preferably, a mounting seat 12 is provided on the lower end surface of the inner cylinder 1, and an opening 121 is longitudinally opened on the mounting seat 12 for the two clamping jaws 3 to extend out of the inner cylinder 1; the lower end surface of the third spring 11 is tightly abutted against the upper end surface of the mounting seat 12; the front and rear side surfaces of the clamping jaws 3 are arranged in close contact with the inner side wall of the mounting seat 12; a fixed shaft 13 is horizontally passed through the mounting seat 12; the middle parts of the two clamping jaws 3 are connected in a scissor-like manner through the fixed shaft 13; the mounting seat 12 provides an installation position for the two clamping jaws 3 and the fixed shaft 13, and at the same time protects the two clamping jaws 3 inside to prevent the clamping jaws 3 from pinching people's hands; the scissor-like connection of the two clamping jaws 3 makes it more stable and has a stronger clamping force.

[0035] Preferably, a sealing ring 14 is sleeved on the first columnar portion 41, and the outer surface of the sealing ring 14 is pressed against the inner wall of the inner cylinder 1; the setting of the sealing ring 14 can prevent the gas from leaking from the air cavity 5 to the lower end of the inner cylinder 1 after ventilation.

[0036] Preferably, two positioning members 15 are respectively provided at the front and rear ends of the mounting seat 12; the positioning members 15 are arranged along the length direction of the clamping jaw 3, and a positioning groove 151 is provided at the lower end of the positioning member 15 to prevent the copper wire a from lateral displacement; the two positioning members 15 are respectively arranged corresponding to the two ends of the copper wire a located outside the mounting groove b, and the two positioning grooves 151 are respectively located on both sides of the axial direction of the mounting groove b, and the purpose of setting the positioning groove 151 is to fix the copper wire a to prevent the copper wire a from deflecting or being squeezed out of the mounting groove b during the clamping process of the clamping jaw 3; the positioning member 15 is arranged closely on the front and rear sides of the clamping jaw 3 and its shape is adapted to the clamping jaw 3, so that the clamping jaw 3 can be completely covered on the front and rear sides, thereby protecting the clamping jaw 3 and preventing pinching injuries.

[0037] Preferably, the device also includes an air outlet 1a connecting the air cavity 5 and the outer cylinder 2, and the air outlet 1a is located above the first columnar portion 41; the air inlet of the air cavity 5 is located at the upper end of the inner cylinder 1, and the air nozzle 6 extends into the air inlet to supply air to the air cavity 5 to push the piston 4; when the second spring 10 is compressed and pushes the piston 4 to reset, the gas in the air cavity 5 is discharged from the inner cylinder 1 through the air outlet 1a to maintain the air pressure balance in the inner cylinder 1.

[0038] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A handheld riveting device, characterized in that: It comprises an inner cylinder and an outer cylinder axially slidably sleeved on one end of the inner cylinder; the other end of the inner cylinder is provided with two clamping claws for clamping a workpiece; the interior of the inner cylinder is provided with a driving component for driving the two clamping claws to open or close; the device also comprises a trigger mechanism for triggering the driving component when the inner cylinder slides into place relative to the outer cylinder, and a release mechanism for releasing the trigger state of the trigger mechanism.

2. The handheld riveting device according to claim 1, characterized in that: The driving assembly includes a piston axially slidably arranged inside the inner cylinder, and an air cavity is enclosed between the upper end surface of the piston and the inner side wall of the inner cylinder; an air nozzle for supplying air to the air cavity is axially penetrated through the inner cylinder, and a first through hole is provided on the outer cylinder to avoid the air nozzle; the upper ends of the two clamping jaws are provided with extensions extending into the inner cylinder, the lower end of the piston is provided with a receiving groove, and the inner side wall of the receiving groove is provided with a guiding inclined surface for guiding the extension to enter; the two extensions drive the two clamping jaws to move closer to or away from each other along the guiding inclined surface.

3. The handheld riveting device according to claim 2, characterized in that: The trigger mechanism includes a sensor for sensing the distance between the upper end surface of the inner cylinder and the top surface of the outer cylinder, and also includes a controller electrically connected to the sensor; the sensor is arranged in the outer cylinder.

4. The handheld riveting device according to claim 3, characterized in that: The release mechanism includes a guide column and a first spring sleeved on the guide column; the lower end of the guide column is fixed on the inner cylinder, and the upper end of the outer cylinder is provided with a second through hole corresponding to the guide column; the guide column is slidably inserted into the second through hole; the upper end of the first spring is tightly pressed against the inner wall of the outer cylinder.

5. The handheld riveting device according to claim 4, characterized in that: The piston includes a first columnar portion and a second columnar portion connected side by side up and down; the device also includes a second spring axially arranged inside the inner cylinder, and the upper end of the second spring is sleeved on the second columnar portion; the upper end surface of the second spring is against the lower end surface of the first columnar portion.

6. The handheld riveting device according to claim 5, characterized in that: The device also includes a third spring for pushing the two extension parts away from each other, and the two ends of the third spring are respectively connected to the two extension parts; the lower end of the second spring is sleeved on the two extension parts.

7. The handheld riveting device according to claim 6, characterized in that: A mounting seat is provided on the lower end surface of the inner cylinder, and an opening is longitudinally opened on the mounting seat for the two clamping jaws to extend out of the inner cylinder; the lower end surface of the third spring is tightly abutted against the upper end surface of the mounting seat; the front and rear side surfaces of the clamping jaws are arranged tightly against the inner side wall of the mounting seat; a fixed shaft is horizontally passed through the mounting seat; the middle parts of the two clamping jaws are scissor-shaped connected through the fixed shaft.

8. The handheld riveting device according to claim 5, characterized in that: A sealing ring is sleeved on the first columnar portion, and the outer surface of the sealing ring is tightly pressed against the inner side wall of the inner cylinder.

9. The handheld riveting device according to claim 7, characterized in that: Two positioning members are respectively arranged at the front and rear ends of the mounting seat; the positioning members are arranged along the length direction of the clamping claws, and the lower end of the positioning member is provided with a positioning groove to prevent the copper wire from lateral displacement.

10. The handheld riveting device according to claim 8, characterized in that: The device further comprises an air outlet hole communicating with the air cavity and the outer cylinder, wherein the air outlet hole is located above the first columnar portion.

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