A tuck device

Abstract

The utility model relates to a kind of folding nail devices, including first bending device and second bending device and the control device of driving both relative bending, first bending device and second bending device are equipped with folding nail space, are equipped with the conveying device for conveying to folding nail space cover nail, rotate to the first bending device and second bending device in preset angle: conveying device and the width and height matching of folding nail space, along the length direction of the folding nail space, conveying device is used to move and send cover nail to folding nail space, control device starts to be used to realize the breakage of cover nail between first bending device and second bending device.The utility model in conveying device is along the length direction of folding nail space and conveys multiple rows of cover nail, can be accurately controlled by structure or system, control device drives first bending device and second bending device relative bending, the relative rotation angle and the force size of two accurate control by preset program, can perfectly simulate the bending action of the stress characteristics of cover nail in manual operation.

Description

Technical Field

[0001] This utility model relates to the field of cap nail production, specifically to a rivet-folding device. Background Technology

[0002] After the entire row of cap studs is formed, it needs to be broken and disassembled according to the specific packaging specifications of the small row. However, its special structure requires much higher precision, force control and consistency in disassembly than ordinary cap studs. Existing technology is difficult to adapt to this requirement.

[0003] Existing methods of breaking caps often involve manual operation. Whether it is a purely manual disassembly in a small workshop or an operation using special pliers or other tools, workers need to fix one side of the cap and apply force to bend the connection point in the middle. This results in high labor intensity and extremely low efficiency for workers. Furthermore, due to differences in the force and technique used by different workers, the disassembled small rows of caps generally have problems such as head deformation, burrs on the shaft, and length deviation. This not only affects the neatness of subsequent packaging but also increases the cost of secondary sorting.

[0004] Therefore, an automatic breaking device with simple structure, high breaking efficiency and accuracy has become an urgent problem to be solved in the field of cap nail production. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a rivet device.

[0006] The technical solution of this utility model is as follows: A rivet-breaking device includes a first bending device and a second bending device, and a control device for driving the two devices to bend relative to each other. The first bending device and the second bending device are provided with rivet-breaking spaces. A conveying device is provided for conveying cap nails into the rivet-breaking spaces. The first bending device and the second bending device are rotated to a preset angle. The conveying device matches the width and height of the rivet-breaking spaces. Along the length direction of the rivet-breaking spaces, the conveying device is used to move the cap nails into the rivet-breaking spaces. The control device is activated to break the cap nails between the first bending device and the second bending device.

[0007] In this invention, the width and height of the conveying device are precisely matched with the rivet space, which can form an omnidirectional fit constraint on the entire row of rivets. This effectively limits the lateral displacement of the rivets during the conveying and breaking process, such as in the width direction and the vertical movement, such as in the height direction. This ensures that the rivets always enter the rivet space in a regular shape, avoiding bending position deviations caused by skewing of the rivets. At the same time, when the first bending device rotates to a specific angle range, its structure can form a stable contact with the corresponding side of the rivet. By using rigid limiting to replace manual fixing in manual operation, the problem of rivet breakage caused by unstable hand grip during manual disassembly is completely solved, ensuring the integrity and positional stability of the rivets before breaking, and laying the foundation for precise breaking. The control device drives the first bending device and the second bending device to bend relative to each other. Through a preset program, the relative rotation angle and the magnitude of the force are precisely controlled. This can perfectly simulate the bending action that fits the force characteristics of the cap stud connection point in manual operation. It can apply an appropriate force to the strength threshold of the cap stud connection point, avoiding under-bending due to insufficient force and over-bending due to excessive force. It can also precisely control the bending angle to be consistent with the optimal angle verified by experience in manual operation, effectively avoiding quality problems such as cap stud head deformation and burrs on the rod. This significantly improves the appearance integrity and structural consistency of the small row of cap studs after disassembly, and reduces the secondary sorting cost of subsequent packaging. The conveying device transports multiple rows of cap studs along the length of the stud space. Its conveying stroke and stopping position can be precisely controlled by mechanical structure or electronic control system. For example, by using servo motor drive and positioning sensor calibration, the entire row of cap studs can be accurately moved to the preset bending position in the stud space, ensuring that the length of each row of cap studs strictly matches the packaging specifications, such as the fixed length of the row. Compared with the length deviation caused by visual judgment and differences in manual operation, this device can control the length error to a very small range, greatly improving the consistency of the cap stud splitting length and meeting the strict requirements of specification uniformity for subsequent automated packaging.

[0008] As a preferred embodiment, the first bending device and the second bending device are movably connected. The first bending device and the second bending device are provided with bending gears at the same end. The bending gears of the two devices mesh with each other. The control device drives the first bending device and drives the second bending device through the bending gears, so that the first bending device and the second bending device move in opposite directions.

[0009] As a preferred embodiment, rolling bearings are provided at both ends of the first bending device and the second bending device.

[0010] As a preferred embodiment, the first bending device or the second bending device has a driving part on the side near the control device. One side of the driving part is connected between the first bending device and the second bending device, and the other side passes through the rolling bearing and is connected to the folding gear transmission.

[0011] As a preferred embodiment, the first bending device and the second bending device are provided with an upper folding plate and a lower flip plate. The cavity between the upper folding plate and the lower flip plate is the folding nail space. When rotated into the lower flip plate at a preset angle, its upper surface corresponds to the conveying plane of the conveying device, and the bottom surface of the corresponding upper folding plate corresponds to the top surface of the cap nail on the conveying plane.

[0012] As a preferred embodiment, the conveying device is provided with a pushing mechanism, which includes a pushing end for pushing the cap stud into the stud space, and a cylinder mechanism and a sliding mechanism connected to the pushing end.

[0013] As a preferred embodiment, a fixing plate is provided between the pushing mechanism and the first bending device. The fixing plate is installed above the conveying device to limit the height of the conveyed cap studs.

[0014] As a preferred embodiment, the driving bending amplitude of the first bending device and the second bending device relative to the conveying device is 20-35°.

[0015] As a preferred embodiment, an output track, a grouping device, and a grouping pipe are provided along the output direction of the broken cap nail. The output track is used to input the broken cap nail in parallel. A pushing mechanism and a grouping pipe are respectively provided on both sides of the end of the output track. The width of the grouping pipe corresponds to the width of the broken cap nail. The pushing mechanism is used to push the cap nail into the grouping pipe.

[0016] As a preferred option, the top of the output track is open, and a pinning mechanism is also provided at the top of the output track to prevent the cap pins from popping out of the output track.

[0017] The advantages of this utility model based on the above solution are as follows: This invention comprises only a core structure consisting of a first bending device, a second bending device, a control device, and a conveying device. It enables the synchronous disassembly of multiple rows of cap studs. Compared to the complex modules of existing large-scale automated production lines, its structure is simpler, significantly reducing equipment manufacturing and installation costs, and is suitable for the capital investment needs of small and medium-sized cap stud manufacturers. Simultaneously, the components work together efficiently; the coordinated operation of the conveying and bending devices can complete the entire process of conveying, positioning, and synchronously bending multiple rows of cap studs in one go, significantly improving disassembly efficiency compared to manual single-row disassembly. Furthermore, device maintenance only targets the core components, eliminating the need for a professional technical team for routine maintenance, reducing subsequent operation and maintenance costs. This invention offers multiple advantages: low-cost investment, high-efficiency multi-row synchronous disassembly, and high-precision uniform specifications. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the breaking device and frame of this utility model; Figure 2 for Figure 1 A magnified view of the area circled in the middle; Figure 3 This is a three-dimensional structural diagram of the breaking device of this utility model; Figure 4 This is a top view of the breaking device and frame of this utility model. Figure 5 This is a partial half-sectional three-dimensional structural view of the breaking device and frame of this utility model; Figure 6 This is a cross-sectional view of the breaking device of this utility model.

[0019] In the diagram, 110. Cover nail assembly; 200. Conveying device; 210. Conveying plane; 220. Pushing mechanism; 221. Pushing end; 230. Cylinder mechanism; 240. Sliding mechanism; 250. Fixed plate; 260. Output track; 270. Pinning mechanism; 280. Pushing mechanism; 310. First bending device; 320. Second bending device; 330. Bending nail space; 341. Upper bending plate; 342. Lower bending plate; 350. Drive unit; 360. Rolling bearing; 370. Bending gear; 400. Control device; 410. Servo motor; 420. Coupling; 500, rack. Detailed Implementation

[0020] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0022] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Example 1

[0023] like Figure 1 As shown, the multi-row cap stud group 110 is usually composed of cap studs with the nail feet facing upwards and cap studs with the nail feet facing downwards, arranged side by side or stacked. A corresponding rivet breaking device includes a first bending device 310, a second bending device 320, a control device 400, and a conveying device 200. The rivet breaking device is usually installed on the frame 500. Through the mechanical connection of the conveying device 200 and the electrical control coordination of the control device 400, the multi-row cap stud group 110 can be broken synchronously and accurately.

[0024] like Figure 2 , 3 As shown, the first bending device 310 and the second bending device 320 are symmetrically arranged at the end of the conveying device 200, forming a tack space 330 to accommodate the cap nail. The control device 400 is installed above the device frame 500 and is connected to and drives the first and second bending devices 320 to bend relative to each other through a transmission structure. The conveying device 200 is arranged in a horizontal direction, and the end of its conveying path is connected to the tack space 330 to complete the precise conveying of the cap nail to the tack space 330.

[0025] like Figure 2 , Figure 3 and Figure 4 As shown, both the first bending device 310 and the second bending device 320 adopt a combination structure of an upper folding plate 341 and a lower flipping plate 342. The upper folding plate 341 and the lower flipping plate 342 are parallel and movably installed above the frame 500, and the cavity between them is the rivet space 330. The lower flipping plate 342 is movably connected to the frame 500 through the drive unit 350. The width and height of the rivet space 330 are designed to be adapted to the overall size of the multi-row cap nail assembly 110 to be processed, ensuring that there is no lateral offset or vertical movement space after the cap nail assembly 110 enters. When the lower flipping plate 342 rotates around the rotation axis to the initial position, its upper end face is completely flush with the conveying plane 210 of the conveying device 200. The distance between the lower end face of the upper folding plate 341 and the top surface of the cap nail assembly 110 on the conveying plane 210 is controlled at 0.3-0.5mm, which avoids squeezing the cap nail head and restricts the vertical displacement of the cap nail. Meanwhile, rolling bearings 360 are installed on both sides of the first bending device 310 and the second bending device 320. The inner ring of the rolling bearing 360 is interference-fitted with the ends of the two bending devices, and the outer ring is fixed in the bearing seat of the frame 500. This converts the sliding friction when the lower flip plate 342 rotates into rolling friction, reduces rotational resistance, and ensures the coaxiality of the rotating shaft, thus avoiding deviation of the shank angle due to rotational offset. A drive unit 350 is provided on the side of the first bending device 310 near the control device 400. The drive unit 350 is a stepped shaft structure. One end is fixed to the cavity of the upper bending plate 341 and the lower bending plate 342 by a key connection. The other end passes through the inner ring of the rolling bearing 360 and is connected to the bending gear 370 by a flat key transmission. The bending gear 370 can be a spur gear with a module of 2 and a number of teeth of 20-50. The bending gear 370 meshes with the bending gear 370 on the same side of the second bending device 320 and the teeth are opposite, ensuring that the first bending device 310 and the second bending device 320 rotate in opposite directions.

[0026] Regarding the relative bending drive of the first bending device 310 and the second bending device 320, the reverse rotational motion can be driven by a single control device 400 + gear transmission. That is, the control device 400 is equipped with only one servo motor 410, and the output shaft of the motor is connected to the rotation shaft of the first bending device 310 through a coupling 420. The linkage is achieved by the meshing folding gears 370 on the same side of the first and second bending devices 320, and the transmission ratio is preferably 1:1. When the servo motor 410 drives the upper folding plate 341 and the lower flip plate 342 of the first bending device 310 to rotate counterclockwise, the meshing folding gears 370 drive the upper folding plate 341 and the lower flip plate 342 of the second bending device 320 to rotate clockwise. The bending amplitude of the two is always consistent, and no additional synchronous control is required.

[0027] Furthermore, regarding the relative bending drive of the first bending device 310 and the second bending device 320, there is a second preferred solution. That is, the first bending device 310 and the second bending device 320 are synchronously driven to move in opposite directions by a dual control device 400. The control device 400 uses two independent servo motors 410, which are connected to the rotating shafts of the first and second bending devices 320 respectively via couplings 420. Using a PLC control system, such as a Siemens S7-1200 system with preset programs, the control device 400 controls the two servo motors 410 to start synchronously at the same speed but in opposite directions. This drives the upper folding plate 341 and the lower folding plate 342 of the first bending device 310 to rotate counterclockwise, while the lower folding plate 342 of the second bending device 320 rotates clockwise. The relative bending amplitude of the two devices simultaneously reaches 20-35°. This solution allows for fine-tuning of the rotation parameters of the two bending devices to adapt to the asymmetrical force requirements of different cap nail assemblies 110.

[0028] like Figure 5As shown, the feeding mechanism 220 of the conveying device 200 is installed on its end side and consists of a pushing end 221, a cylinder mechanism 230 and a sliding mechanism 240. The pushing end 221 is a rectangular metal plate made of No. 45 steel with a thickness of 5mm and a length that matches the width of the multi-row cap nail group 110. The cylinder mechanism 230 uses a small pneumatic cylinder, and its piston rod is welded perpendicularly to the pushing end 221. The cylinder mechanism 230 can move up and down. The sliding mechanism 240 consists of a slide rail and a slider. The slide rail is fixed along the conveying direction of the conveying device 200, and the slider is bolted to the back of the cylinder, driving the cylinder and the pushing end 221 to move back and forth along the conveying direction. Meanwhile, an acrylic fixing plate 250 is installed between the pushing mechanism 220 and the first bending device 310, and above the conveyor belt, via a bracket. Height frames are installed on both sides of the conveyor device 200, and screw holes are made on the fixing plate 250 to fix it to the height frames. The pushing end 221 will stop on one side of the fixing plate 250 at a certain moment to restrict the movement of the cap nail assembly 110. For multi-row cap nail assemblies 110 of different thicknesses, the distance between the lower end face of the fixing plate 250 and the surface of the conveyor belt can be adjusted by adding shims, etc., which can further restrict the vertical displacement of the cap nail assembly 110 and prevent the cap nail assembly 110 from tilting during the pushing process.

[0029] In order to convey the cap stud assembly 110, in addition to the aforementioned push mechanism 280, cylinder mechanism 230 and push end 221, the conveying device 200 can also be based on a polyurethane conveyor belt as the basic conveying component. The conveyor belt is driven by a stepper motor, and the conveying speed can be adjusted by an existing PLC program. The width of the conveyor belt is consistent with the width of the tack space 330 to ensure that the cap stud assembly 110 moves stably along the conveying direction.

[0030] like Figure 5 and Figure 6As shown, in the output and grouping stage after the cap nails break, an L-shaped output track 260 is provided on the other side of the device. The horizontal part of the output track 260 is connected to the cap nail space 330, and the vertical part is the grouping pipe. The horizontal part of the output track 260 is a U-shaped metal channel made of stainless steel. The width of the channel is adapted to the width of the small row of cap nails after the breakage. The top of the horizontal part is open to facilitate observation of the conveying status of the cap nails after the breakage. A nail pressing mechanism 270 is installed above the horizontal part of the output track 260. The nail pressing mechanism 270 is an elastic rubber sheet with a width consistent with the channel width. One end of the rubber sheet is fixed to the side bracket of the channel with bolts, and the other end hangs down naturally onto the channel. The distance between the lower end and the top surface of the cap nail matches the height of the cap nail group 110. When the cap nail enters the horizontal part of the output track 260 from the cap nail space 330, the elastic rubber sheet can apply slight pressure when the cap nail shows a tendency to bounce, preventing the cap nail from popping out of the channel. The grouping device is installed at the end of the output track 260. A pushing mechanism 280 is provided in the opposite direction of the conveying direction of the grouping device. The pushing mechanism 280 uses a miniature pneumatic cylinder. The piston rod end is connected to a rubber pusher block to avoid scratching the cap studs. The pusher block moves in a direction perpendicular to the conveying direction of the horizontal part of the output track 260. The grouping pipe, i.e. the vertical part of the output track 260, has its pipe inlet aligned with the end of the horizontal part of the output track 260. Each pipe inlet is equipped with a photoelectric sensor to detect whether the cap studs are in place. When the small row of cap studs 110 moves to the end along the horizontal part of the output track 260, the photoelectric sensor detects a signal, and the pushing mechanism 280 starts according to the preset grouping quantity, pushing the cap studs into the corresponding grouping pipe to realize automatic grouping of cap studs and prepare for the subsequent packaging process.

[0031] Specifically, the conveying device 200 also includes a mechanism to allow the cap nail assembly 110 to enter the longitudinal input channel and the transverse input channel in sequence, and a cylinder mechanism 230 and a sliding mechanism 240 to realize the directional change of the cap nail assembly 110; a photoelectric sensor is provided on one side of the pushing mechanism 280 and the pushing mechanism 220 to detect the conveying position of the cap nail assembly 110.

[0032] One possible process for bending nails is: Feeding and conveying of cap nail assembly 110: Usually after the previous process, the conveying device 200 neatly conveys multiple rows of cap nail assemblies 110 (cap nail assemblies 110 with nail feet facing upwards and downwards) onto the conveyor belt. During the movement, the front end of the transverse input channel is used to limit the conveying displacement of the cap nail assembly 110. The photoelectric sensor on one side synchronously controls the cap nail conveying distance in the longitudinal input channel to avoid conveying interference. When the cap nail assembly 110 reaches the end of the transverse input channel and the nearby photoelectric sensor detects that it is in position, the conveying device 200 stops running. Precise positioning of the cap nail assembly 110: The cylinder mechanism 230 of the pushing mechanism 220 is activated and cooperates with the sliding mechanism 240 to move downward and drive the pushing end 221 to move along the conveying direction of the transverse input channel, and smoothly push the cap nail assembly 110 into the folding space 330 between the first bending device 310 and the second bending device 320. The pushing distance is flexibly set until the end of the cap nail assembly 110 of a suitable length is in contact with the limiting surface of the folding space 330. At a certain pushing distance, the pushing end 221 can be in contact with and stationary on one side of the fixed plate 250. At this time, the upper folding plate 341 and the lower folding plate 342 of the folding space 330 form upper and lower constraints on the cap nail assembly 110 to be broken. The lower folding plate 342 of the first bending device 310 is in a horizontal initial position, with its upper end face flush with the surface of the conveyor belt, forming a stable support for the bottom of the cap nail assembly 110. Synchronous bending of multi-row cap stud assembly 110: The control device 400 starts according to the preset program. The servo motor 410 drives the first bending device 310 to rotate counterclockwise, and drives the second bending device 320 to rotate clockwise through the meshing bending gear 370. The two bend synchronously to 20-35°, which is a downward bend. During the bending process, the upper folding plate 341 and the lower folding plate 342 work together on the connection point or break point of the cap stud assembly 110, corresponding to the inner side of the first bending device 310 and the second bending device 320. The applied force is controlled by the torque of the servo motor 410 and is adapted to the strength threshold of the cap stud connection point to ensure that the connection point breaks accurately without head deformation or burrs on the rod. At the same time, during the rotation of the lower folding plate 342 of the first bending device 310, its edge forms a rigid contact with one side of the cap stud assembly 110 below the fixed plate 250 to prevent the studs from breaking. To achieve a better bending effect, the downward bend is performed in the opposite direction to achieve the upward bending effect, resulting in a better breakage effect. Stub output and grouping: After bending is completed, the control device 400 drives the first and second bending devices 320 to reset to the initial position, as shown in the figure, and restarts the pushing mechanism 280. The broken small row of stubs is abutted by the stub group 110 on the rear side and enters the transverse part of the output track 260, and moves towards the end along the output track 260. The stub pressing mechanism 270 above the output track 260 is used to prevent the stubs from popping out. When the small cap pins reach the end of the output track 260, the nearby photoelectric sensor detects the signal, and the push mechanism 280 is activated, pushing the cap pins into the corresponding grouping pipe, i.e., the vertical part of the output track 260. After grouping, the conveying continues and waits for subsequent packaging.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rivet device, characterized in that, The device includes a first bending device and a second bending device, as well as a control device for driving the two devices to bend relative to each other. The first bending device and the second bending device are provided with a rivet space. A conveying device is provided for conveying the cap nail into the rivet space. The first bending device and the second bending device are rotated to a preset angle. The conveying device matches the width and height of the rivet space. Along the length direction of the rivet space, the conveying device is used to move the cap nail into the rivet space. The control device is activated to break the cap nail between the first bending device and the second bending device.

2. The rivet device according to claim 1, characterized in that, The first bending device and the second bending device are movably connected. The same end of the first bending device and the second bending device is provided with a bending gear. The bending gears of the two devices mesh with each other. The control device drives the first bending device and drives the second bending device through the bending gear, so that the first bending device and the second bending device move in opposite directions.

3. The rivet device according to claim 2, characterized in that, Both ends of the first bending device and the second bending device are equipped with rolling bearings.

4. A rivet device according to claim 3, characterized in that, The first or second bending device has a drive unit on one side near the control device. One side of the drive unit is connected between the first and second bending devices, and the other side passes through the rolling bearing and is connected to the folding gear transmission.

5. A rivet device according to claim 2, characterized in that, The first bending device and the second bending device are provided with an upper folding plate and a lower flipping plate. The cavity between the upper folding plate and the lower flipping plate is the space for the folding nail. When rotated to the lower flipping plate at a preset angle, its upper surface corresponds to the conveying plane of the conveying device, and the bottom surface of the corresponding upper folding plate corresponds to the top surface of the cap nail on the conveying plane.

6. A rivet device according to claim 2, characterized in that, The conveying device is equipped with a pushing mechanism, which includes a pushing end for pushing the cap stud into the stud space, and a cylinder mechanism and a sliding mechanism connected to the pushing end.

7. A rivet device according to claim 1, characterized in that, A fixing plate is provided between the pushing mechanism and the first bending device. The fixing plate is installed above the conveying device to limit the height of the conveyed cap studs.

8. A rivet device according to claim 1, characterized in that, The first and second bending devices have a bending radius of 20-35° relative to the conveying device.

9. A rivet device according to claim 1, characterized in that, An output track, a grouping device, and a grouping pipe are provided along the output direction of the broken cap nail. The output track is used to input the broken cap nail in parallel. A pushing mechanism and a grouping pipe are respectively provided on both sides of the end of the output track. The width of the grouping pipe corresponds to the width of the broken cap nail. The pushing mechanism is used to push the cap nail into the grouping pipe.

10. A rivet device according to claim 9, characterized in that, The top of the output track is open, and a pinning mechanism is also provided at the top of the output track to prevent the cap pins from popping out of the output track.

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