A silent umbrella eyelet machine

Abstract

This utility model discloses a silent umbrella eyelet machine, including a frame, a riveting base on the frame, a lower mold at the bottom of the riveting base, a machine head above the lower mold, an upper mold punch adapted to the lower mold on the machine head, a riveting drive mechanism connected to the upper mold punch, a vibratory feeder connected to one side of the machine head, a feeding track at the output end of the vibratory feeder, a movable track at the end of the feeding track, a contact surface near the machine head, a pressure roller inside the contact surface on the machine head, the pressure roller pushing the movable track to move its output end outward after descending, a return spring between the output end of the movable track and the riveting base, the return spring controlling the inward return of the movable track's output end after outward movement. This utility model helps to solve the problem of excessive noise generated during operation due to structural collisions in the outward movement drive of the feeding track in some current eyelet machines.

Description

Technical Field

[0001] This utility model relates to the field of umbrella processing and riveting equipment, and in particular to a silent umbrella eyelet machine. Background Technology

[0002] Eyelet buttons have a wide range of uses, typically found in umbrellas, clothing, bags, handbags, belts, shoes, and packaging materials. An eyelet machine is a device that rivets eyelet buttons onto workpieces.

[0003] In response, Chinese patent CN218985047U discloses a punching eyelet machine, including a frame, a buttoning mechanism and a feeding mechanism on the frame, and a drive device for driving the buttoning mechanism and the feeding mechanism. The drive device includes a rotating shaft, a motor, a cam transmission structure and an eccentric transmission structure. The motor drives the rotating shaft to rotate, and the rotating shaft drives the cam transmission structure and the eccentric transmission structure to rotate synchronously. The cam transmission structure drives the feeding mechanism to swing between the feeding position and the standby position, and the eccentric transmission structure drives the buttoning mechanism to perform a buttoning action. By driving the cam transmission structure and the eccentric transmission structure to work synchronously through the rotating shaft, the buttoning mechanism and the feeding mechanism can be completed synchronously without interfering with each other.

[0004] In this technical solution, a first cylinder is installed on the feeding mechanism. The telescopic end of the first cylinder abuts against the machine frame. When the punching mechanism performs the punching action, the first cylinder causes the feeding mechanism to deviate from the machine frame, thereby disengaging the cam from the rocker arm. This structure, with the cylinder body fixedly mounted on the track of the feeding mechanism, results in a more cumbersome feeding structure and requires a separate air circuit to connect to the air compressor, increasing the complexity of the equipment's drive system. In practical applications, the telescopic end of the cylinder impacts the outer wall of the machine frame during extension and retraction, generating noise. Prolonged exposure to this processing environment can damage the hearing health of on-site workers. Therefore, there is an urgent need for a corn eyelet machine capable of silent operation to solve the aforementioned technical problems. Utility Model Content

[0005] This invention provides a silent umbrella eyelet machine, which helps to solve the problem that the external movement drive of the feeding track in some current eyelet machines will generate a lot of noise due to the collision between structures during operation.

[0006] This utility model is implemented as follows:

[0007] A silent umbrella eyelet machine includes a frame, a worktable at the top of the frame, a riveting base on the worktable, a lower die at the connection between the bottom of the riveting base and the worktable, a machine head above the lower die on the riveting base, an upper die punch adapted to the lower die on the machine head, the upper die punch being movably connected to the machine head, and a riveting drive mechanism connected to the upper die punch, the upper die punch being able to move up and down and cooperate with the lower die to complete the riveting and stamping action, a vibratory feeder for supplying eyelet button processing parts connected to one side of the machine head, a feeding rail at the output end of the vibratory feeder, a movable rail at the end of the feeding rail, the output end of the movable rail being located between the lower die and the upper die punch, an abutting curved surface on the side of the movable rail near the machine head, a pressure roller on the machine head located inside the abutting curved surface that can move up and down synchronously with the upper die punch, the pressure roller being able to push the movable rail after moving down to make the output end of the movable rail move outward, a return spring is also provided between the output end of the movable rail and the riveting base, the return spring being able to control the inward return of the output end of the movable rail after it moves outward.

[0008] Based on the above technical solution, the machine head is equipped with a controller, which is connected to a display screen and control buttons located on the front of the machine head. The riveting drive mechanism includes a servo motor mounted on the machine head, which is electrically connected to the controller. The servo motor is also electrically connected to a drive switch. An eccentric wheel is driven to the output end of the servo motor. The eccentric wheel is hinged to a vertically arranged guide rod through a connecting rod. The upper die punch is detachably mounted at the bottom of the guide rod. A guide seat is provided between the guide post and the machine head.

[0009] Based on the above technical solution, an adjusting link is provided between the pressure roller and the upper die punch, and the adjusting link can adjust the installation distance between the pressure roller and the contact curved surface.

[0010] Based on the above technical solution, the machine head is provided with a positioning rod and a buffer rod on the side near the feeding track for controlling the inward movement and reset stroke of the moving track.

[0011] Based on the above technical solution, the contact surface has an "L" shaped profile and its inner corners are rounded.

[0012] Based on the above technical solution, the feeding track and the movable track are spaced apart at the connection point, and the movable track is hinged to a limiting seat at the connection point with the feeding track. The limiting seat is connected and fixed to the machine head.

[0013] Based on the above technical solution, the pressure roller includes a rotating shaft, and a ring-shaped frame is provided around the rotating shaft. The frame has several ribs that are symmetrical about the axial center line of the rotating shaft. Each rib has a triangular frame structure, and a wrapping sleeve is provided around the frame.

[0014] Based on the above technical solution, the wrapping sleeve is made of elastic material, and the outer surface of the wrapping sleeve is provided with anti-slip texture.

[0015] Based on the above technical solution, the rotating shaft of the pressure roller is hinged to the mounting base, the mounting base is connected to the adjusting rod, and anti-deviation baffles adapted to the contours of the left and right sides of the outer wall of the mounting base are provided.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] 1. This utility model achieves relatively quiet operation by using a structure in which a pressure roller and abutting curved surface cooperate to drive the moving track outward and return to its original position. This avoids the impact noise generated when using a cylinder drive in traditional eyelet machines, thus achieving quiet operation. This not only improves the working environment and protects the hearing health of operators, but also increases the comfort and efficiency of operators.

[0018] 2. Compared to traditional eyelet machines, this invention reduces the number of cylinders and their independent air passages, resulting in a simpler structure and lower manufacturing costs and maintenance complexity. The simplified structure also reduces the probability of malfunctions, improving the reliability and stability of the equipment.

[0019] 3. This utility model uses a servo motor as the power source for the riveting drive mechanism, combined with a controller and display screen, to achieve precise control over the riveting pressure and the stroke of the upper die punch. Operators can flexibly adjust the equipment parameters according to different workpieces and eyelet button specifications to ensure the consistency and stability of riveting quality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a silent umbrella eyelet machine in one embodiment;

[0022] Figure 2 for Figure 1 Schematic diagram of the riveting transmission structure of the upper and middle die punch;

[0023] Figure 3 for Figure 1 A partial schematic diagram of the activity control structure of the moving track;

[0024] Figure 4 for Figure 1 A magnified view of part A in the image;

[0025] Figure 5 This is a cross-sectional view of the pressure roller in another embodiment;

[0026] Figure 6 This is a schematic diagram of the installation structure of the pressure roller in one embodiment.

[0027] The diagram is labeled as follows: 100, frame; 110, worktable; 120, foot switch; 200, riveting base; 210, lower die; 220, machine head; 230, upper die punch; 231, guide rod; 232, guide seat; 233, hinge seat; 234, connecting rod; 235, eccentric wheel; 236, servo motor; 240, reset spring; 250, pressure roller; 251, rotating shaft; 252, frame; 253, wrapping sleeve; 254, mounting base; 255, anti-deviation baffle; 256, anti-slip texture; 260, adjusting connecting rod; 270, positioning rod; 280, buffer rod; 290, limit seat; 300, vibratory feeder; 310, feeding track; 311, movable track; 312, contact surface. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0029] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Example 1: Combination Figures 1 to 4 This embodiment discloses a silent umbrella eyelet machine, which aims to effectively solve the problem of excessive noise caused by structural collisions during operation of some current eyelet machines by optimizing the outward movement drive structure of the feeding track 310. It provides the umbrella processing industry with a quiet, efficient and reliable eyelet riveting device, improves the comfort of the working environment and production efficiency, and protects the health of the workers.

[0033] like Figure 1 As shown, the silent umbrella eyelet machine specifically includes a frame 100, which is assembled from galvanized aluminum profiles and mainly serves as a load-bearing and supporting element. A worktable 110 is located on top of the frame 100, which serves as the operating platform for the entire machine and provides a stable working foundation.

[0034] A riveting base 200 is centrally located on the workbench 110. The riveting base 200 is a vertical support structure. A lower die 210 is located at the connection point between the bottom of the riveting base 200 and the workbench 110. A machine head 220 is located above the lower die 210 on the riveting base 200. The machine head 220 is the installation area for the main operating components of the equipment. An upper die punch 230 adapted to the lower die 210 is provided on the machine head 220. The upper die punch 230 is movably connected to the machine head 220 and is connected to a riveting drive mechanism. The upper die punch 230 can move up and down and work with the lower die 210 to complete the riveting and stamping action. For example, in this embodiment, the lower die 210 adopts a flange structure that is narrow at the top and wide at the bottom, and the working end of the upper die punch 230 adopts a needle-like structure. During operation, the on-site personnel align the eyelet button to be riveted on the umbrella rib with the top of the lower die 210, and control the upper die punch 230 to move downward through the control switch, so as to rivet the eyelet button output from the feeding track 310 to the threshold position of the umbrella rib.

[0035] A vibratory feeder 300 for supplying eyelet button parts is connected to one side of the machine head 220. The bottom of the vibratory feeder 300 is connected and fixed to the riveting base 200 via an extension frame. A feeding track 310 is provided at the output end of the vibratory feeder 300, and a movable track 311 is provided at the end of the feeding track 310, which, in conjunction with… Figure 1 and Figure 4The feeding track 310 and the movable track 311 are spaced apart at their connection points. A limiting seat 290 is hinged to the movable track 311 at its connection point with the feeding track 310. The hinge points are located on the left and right sides, and the limiting seat 290 is fixedly connected to the machine head 220. This connection method allows the movable track 311 to rotate around the hinge point under the push of the pressure roller 250, achieving outward movement and resetting actions. The presence of the limiting seat 290 ensures the stability of the movable track 311 during rotation, preventing it from shifting or wobbling, and ensuring that the eyelet button is accurately delivered to the riveting position.

[0036] The output end of the movable track 311 is located between the lower die 210 and the upper die punch 230. It is used to accurately transport the eyelet button to the riveting position. With its own material control structure, it can control the material point by point. Together with the upper die punch 230, it completes the feeding and stamping action. This is existing technology. Its specific structure and working principle can be found in the relevant content of patents CN209904010U, CN209904006U, CN209381503U, etc. It will not be repeated here. Those skilled in the art can select and implement it from the existing technology according to the actual operation.

[0037] Furthermore, such as Figure 3 As shown, the movable track 311 has an abutment surface 312 on the side near the machine head 220. The abutment surface 312 has an "L" shaped profile, and its inner corners are rounded. This special profile design makes the pressure roller 250 push the movable track 311 more smoothly, reducing friction and jamming between the pressure roller 250 and the abutment surface 312, and further reducing noise generation. At the same time, the rounded corner structure also avoids stress concentration, improving the strength and wear resistance of the abutment surface 312.

[0038] The machine head 220, located inside the abutment curved surface 312, is equipped with a pressure roller 250 that moves synchronously with the upper die punch 230. After descending, the pressure roller 250 pushes the movable track 311, causing its output end to move outward. A return spring 240 is also provided between the output end of the movable track 311 and the riveting base 200, controlling the inward repositioning of the output end of the movable track 311 after its outward movement. When the upper die punch 230 descends for riveting, the pressure roller 250 also descends, pushing the movable track 311 and causing its output end to move outward, providing sufficient space for the riveting action. The return spring 240, located between the output end of the movable track 311 and the riveting base 200, controls the inward repositioning of the output end of the movable track 311 after the riveting action is completed, preparing for the next feeding and riveting operation. This structural design avoids the noise problem caused by the cylinder-driven feeding mechanism in traditional eyelet machines. By cooperating with the pressure roller 250 and the contact surface 312, the lifting and lowering motion of the upper die punch 230 drives the outward movement and reset of the movable track 311, eliminating the need for cylinder extension and retraction impact, thus achieving silent operation. At the same time, this structure is simpler, reducing the number of parts and the complexity of the drive system, thereby lowering the manufacturing cost and maintenance difficulty of the equipment.

[0039] The riveting head 220 is equipped with a controller, which is connected to a display screen and control buttons located on the front of the head 220. Operators can monitor the equipment's operating status in real time through the display screen and set parameters and control the equipment through the control buttons. The riveting drive mechanism includes a servo motor 236 mounted on the head 220. The servo motor 236 is electrically connected to the controller, facilitating automated control and precise adjustment of riveting pressure. The servo motor 236 is also electrically connected to a drive switch for controlling its start and stop. In this embodiment, the drive switch is specifically a foot switch 120, located at the bottom of the frame 100 for convenient foot operation. Figure 2As shown, the output end of the servo motor 236 is connected to an eccentric wheel 235. The eccentric wheel 235 is hinged to a vertically arranged guide rod 231 via a connecting rod 234. The top of the guide rod 231 is hinged to the connecting rod 234 via a hinge seat 233. The upper die punch 230 is detachably mounted at the bottom of the guide rod. A guide seat 232 is provided between the guide post and the machine head 220. The guide seat 232 has a vertical through hole inside for the guide rod 231 to pass through and guide the guide rod 231, enabling the guide rod 231 to slide stably up and down. When the servo motor 236 rotates, it drives the eccentric wheel 235 to rotate. The eccentric wheel 235 converts the rotational motion into the vertical linear motion of the guide rod 231 via the connecting rod 234, thereby driving the upper die punch 230 to perform the riveting action. This driving method has the advantages of fast response speed, high control precision, and smooth operation, and can meet the riveting requirements of eyelet buttons of different specifications.

[0040] Combination Figure 3 As shown, an adjusting rod 260 is provided between the pressure roller 250 and the upper die punch 230. The adjusting rod 260 is a horizontal screw structure, with its left end welded and fixed to the upper die punch 230 so that the adjusting rod 260 can move up and down synchronously with the upper die punch 230. The right end of the adjusting rod 260 is connected to the pressure roller 250. It should be noted that the pressure roller 250 and the adjusting rod 260 are connected by a nut. The adjusting rod 260 can adjust the installation distance between the pressure roller 250 and the abutting curved surface 312. By adjusting the rod 260, the distance between the pressure roller 250 and the abutting curved surface 312 can be precisely adjusted according to different workpiece sizes and riveting requirements, ensuring that the pressure roller 250 can accurately push the movable track 311 when descending, realizing the reliable outward movement of the movable track 311. This adjustable design improves the versatility and adaptability of the equipment and can meet the diverse needs of different customers.

[0041] Furthermore, the machine head 220 is equipped with a positioning rod 270 and a buffer rod 280 on the side near the feeding track 310 to control the inward movement and reset stroke of the movable track 311. The positioning rod 270 limits the extreme position of the inward movement of the movable track 311, ensuring that the movable track 311 can accurately return to its initial position after reset, thus guaranteeing the accuracy of feeding. The buffer rod 280 acts as a buffer, absorbing the impact force of the movable track 311 during the reset process, reducing the collision between the movable track 311 and the machine head 220, reducing noise, and extending the service life of the equipment.

[0042] In the specific implementation process, the eyelet button array moves along the feeding path inside the feeding track 310. The operator places the threshold position of the umbrella rib against the lower mold 210 and controls the servo motor 236 to rotate via the foot switch 120, driving the guide rod 231 and the upper mold punch 230 downward. During this process, the pressure roller 250 follows downward and pushes the output end of the multi-functional track outward to create sufficient riveting space. The upper mold punch 230 rivets the eyelet button onto the threshold position of the umbrella rib, completing the riveting operation. Subsequently, the guide post drives the upper mold punch 230 upward, and the pressure roller 250 moves upward to release the pressure on the abutting surface 312. Using the tension of the reset spring 240, the output end of the movable track 311 moves inward to reset, preparing for the next work process.

[0043] Example 2: Based on Example 1, combined with Figure 5 As shown, in this embodiment, the pressure roller 250 includes a rotating shaft 251, and an annular frame 252 is provided around the rotating shaft 251. The frame 252 has several ribs that are symmetrical about the axial centerline of the rotating shaft 251. Each rib has a triangular frame structure. This frame 252 structure is lightweight while also having high strength and stability, and can withstand the pressure generated by the pressure roller 250 when pushing the movable track 311. A sleeve 253 is provided around the frame 252. The sleeve 253 is made of an elastic material, such as rubber or polyurethane. The elastic sleeve 253 can increase the friction between the pressure roller 250 and the contact surface 312, ensuring that the pressure roller 250 will not slip when pushing the movable track 311, and at the same time, it plays a role in buffering and shock absorption, reducing noise.

[0044] Furthermore, in combination Figure 6 As shown, the outer surface of the sleeve 253 is provided with anti-slip texture 256, which further improves the friction performance between the pressure roller 250 and the contact curved surface 312, ensuring reliable operation of the equipment. The rotating shaft 251 of the pressure roller 250 is hinged to the mounting base 254, which is connected to the adjusting rod 260. The left and right sides of the outer wall of the mounting base 254 are provided with anti-deviation baffles 255 adapted to the contours of the left and right sides of the movable track 311. The anti-deviation baffles 255 can prevent the movable track 311 from shifting left and right during rotation, ensuring that the movable track 311 always moves along the predetermined trajectory, improving the accuracy and stability of feeding.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A silent umbrella eyelet machine, characterized in that, The machine includes a frame (100), a worktable (110) on top of the frame (100), a riveting base (200) on the worktable (110), a lower die (210) at the connection between the bottom of the riveting base (200) and the worktable (110), a machine head (220) above the lower die (210) on the riveting base (200), an upper die punch (230) adapted to the lower die (210) on the machine head (220), the upper die punch (230) being movably connected to the machine head (220), the upper die punch (230) being connected to a riveting drive mechanism, the upper die punch (230) being able to move up and down, and cooperating with the lower die (210) to complete the riveting and stamping action, a vibratory feeder (300) for supplying eyelet button processing parts is connected to one side of the machine head (220), the vibratory feeder (300) outputs The end is provided with a feeding track (310), and the end of the feeding track (310) is provided with a movable track (311). The output end of the movable track (311) is located between the lower die (210) and the upper die punch (230). The movable track (311) is provided with an abutting surface (312) on the side near the machine head (220). The machine head (220) is provided with a pressure roller (250) located inside the abutting surface (312) that can move up and down synchronously with the upper die punch (230). After the pressure roller (250) moves down, it can push the movable track (311) to make the output end of the movable track (311) move outward. A reset spring (240) is also provided between the output end of the movable track (311) and the riveting base (200). The reset spring (240) can control the inward reset of the output end of the movable track (311) after it moves outward.

2. The silent umbrella eyelet machine according to claim 1, characterized in that, The machine head (220) is equipped with a controller, which is connected to a display screen and control buttons located on the front of the machine head (220). The riveting drive mechanism includes a servo motor (236) mounted on the machine head (220). The servo motor (236) is electrically connected to the controller. The servo motor (236) is also electrically connected to a drive switch. The output end of the servo motor (236) is connected to an eccentric wheel (235). The eccentric wheel (235) is hinged to a vertically arranged guide rod (231) through a connecting rod (234). The upper die punch (230) is detachably mounted at the bottom of the guide rod (231). A guide seat (232) is provided between the guide post and the machine head (220).

3. The silent umbrella eyelet machine according to claim 1, characterized in that, An adjusting rod (260) is provided between the pressure roller (250) and the upper die punch (230), and the adjusting rod (260) can adjust the installation distance between the pressure roller (250) and the contact surface (312).

4. A silent umbrella eyelet machine according to claim 1, characterized in that, The machine head (220) is provided with a positioning rod (270) and a buffer rod (280) on the side near the feeding track (310) for controlling the inward repositioning stroke of the moving track (311).

5. A silent umbrella eyelet machine according to claim 1, characterized in that, The contact surface (312) has an "L" shaped profile and its inner corners are rounded.

6. A silent umbrella eyelet machine according to claim 1, characterized in that, The feeding track (310) and the movable track (311) are spaced apart at the connection point. The movable track (311) is hinged to the feeding track (310) with a limiting seat (290). The limiting seat (290) is fixedly connected to the machine head (220).

7. A silent umbrella eyelet machine according to claim 1, characterized in that, The pressure roller (250) includes a rotating shaft (251), and a ring-shaped frame (252) is provided around the rotating shaft (251). The frame (252) has several ribs that are symmetrical about the axial center line of the rotating shaft (251). Each rib has a triangular frame structure. A wrapping sleeve (253) is provided around the frame (252).

8. A silent umbrella eyelet machine according to claim 7, characterized in that, The cover (253) is made of elastic material and has anti-slip texture (256) on the outer surface.

9. A silent umbrella eyelet machine according to claim 8, characterized in that, The rotating shaft (251) of the pressure roller (250) is hinged to the mounting base (254). The mounting base (254) is connected to the adjusting rod (260). The left and right sides of the outer wall of the mounting base (254) are provided with anti-deviation baffles (255) that are adapted to the contours of the left and right sides of the movable track (311).

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