Leather binding aid for Pilates core bed box

Abstract

This invention discloses a leather binding auxiliary device for a Pilates core bed box. This device automatically binds the leather cover through mechanical means, solving the problems of low efficiency and inconsistent quality associated with traditional manual binding. Its structure includes a downward pressure fixing mechanism, an upward and straightening mechanism, and a leather edge tensioning mechanism. The downward pressure mechanism secures the box via a cylinder- or spring-driven press plate; the upward pressure mechanism uses rollers to push and flatten the leather cover around its edges; and the tensioning mechanism, based on the upward pressure, utilizes the leather's resilience to actively tighten and wrap the leather cover around the box opening. The device further utilizes a preheating device to enhance the leather cover's ductility, and a shaping device to refine the leather edge's appearance. Compared to existing technologies, this invention features an automated binding process, high efficiency, and consistent product quality. Its innovation lies in the mechanism-driven active tightening and wrapping of the leather cover, which is of great significance to the automation upgrade of the industry.

Description

Technical Field

[0001] This invention relates to leather processing equipment and technology, specifically to an auxiliary device for automatically binding and connecting wooden boxes and leather covers for Pilates Core Bed series products. This device primarily addresses the low efficiency and inconsistent quality of traditional manual binding. This auxiliary device mechanically flattens, tightens, and binds the leather cover, replacing manual hammering and stretching operations and improving the binding process and quality. Its application in the automated assembly of leather covers and wooden boxes for Pilates Core Bed series products in the luggage industry belongs to the field of leather processing and equipment technology. Background Art

[0002] Traditional leather binding is done manually, which is inefficient and of varying quality. The basic steps for manual binding are:

[0003] 1. Put the prefabricated wooden box into a leather case that is slightly larger and bind it initially.

[0004] 2. Use a hand tool (such as a small wooden hammer) to hit the leather case to make it fit the shape of the wooden box.

[0005] 3. Use a handheld tool to stretch and smooth the edge of the leather case inward, wrapping it around the edge of the wooden box to form a reverse edge.

[0006] 4. Use an air gun to nail the leather case to the wooden box.

[0007] 5. Manually trim excess edging.

[0008] The main problems with hand binding are:

[0009] 1. Low efficiency. The number of books a worker can bind in a day is limited.

[0010] 2. The surface of the leather case may have traces of knocking or tensioning, indicating poor quality.

[0011] 3. The effect of stretching and smoothing the edges of the leather case is uneven and prone to wrinkling.

[0012] 4. Accidental hits during the nail fixing process will also cause damage to the surface of the leather case.

[0013] 5. The quality and appearance of the edging depend on the worker's craftsmanship and experience.

[0014] In order to solve the above problems, it is necessary to design a mechanized binding auxiliary equipment. Summary of the Invention

[0015] In light of this, the present invention provides a binding assistance device that automatically compresses, smoothes, and tightens leather covers, resolving many of the challenges associated with manual binding and improving both speed and quality. Its innovation lies in leveraging the resilience of the leather material to achieve both tensioning and retraction. Overall, this device eliminates the disadvantages of manual binding, mechanizes and automates the binding process, and increases productivity, making it worthy of widespread application.

[0016] The technical solution of the present invention is achieved as follows: a leather cover binding auxiliary device for a Pilates core bed box includes a downward pressing and fixing mechanism and a lifting and smoothing mechanism. The downward pressing and fixing mechanism is used to press and fix the wooden box covered by the leather cover; the lifting and smoothing mechanism is used to lift the four side portions of the leather cover upward and smooth them. This preferred solution has a reasonable overall structure, realizes the steps and functions of automatically binding the leather cover, and greatly improves efficiency.

[0017] Preferably, the device also includes a leather edge tensioning mechanism. After lifting and smoothing, the leather edge's resilience is utilized to pull it against the four walls of the wooden box. The mechanism comprises a widthwise assembly, a lengthwise assembly, a table-shaped frame, a bushing, a spring, and a pin. The widthwise and lengthwise assemblies each comprise a toothed roller, a support arm, and corresponding drive couplings. The components, connected by the table-shaped frame, form a rectangular frame that matches the dimensions of the wooden box. The bushing secures the table-shaped frame, and the spring presses the frame downward to tighten the leather. This preferred tensioning mechanism effectively leverages the leather's resilience to achieve active tension and reverse wrapping.

[0018] Preferably, the downward pressure fixing mechanism includes a frame, a pressure plate, a press platform, a lifting shaft, and a cylinder that drives the lifting shaft. The press platform is fixed to the lower end of the lifting shaft. The cylinder drives the lifting shaft up and down to raise or lower the press platform, thereby pressing and fixing the wooden box. This preferred solution's pressing mechanism reliably fixes the wooden box, providing a stable foundation for subsequent processes.

[0019] Preferably, the lifting and smoothing mechanism includes a short roller, a short roller seat, a long roller, a long roller seat, a slotted plate, a guide shaft, a support plate, and a cylinder that drives the support plate up and down. The roller seat is fixed to the slotted plate, and the plate is fixed to the support plate via a guide shaft. The cylinder drives the roller assembly to lift and smooth the leather cover. This preferred lifting and smoothing mechanism uses rollers to achieve the shaping and smoothing of the leather cover, and has a high degree of automation.

[0020] Preferably, the invention further comprises a preheating device for preheating the leather case to a certain temperature to improve its ductility. This preferred solution heat pretreatment enhances the ductility of the leather case and reduces binding defects.

[0021] Preferably, the preheating device includes an electric heating tube, a tube seat, a tube rack, and a driving spring component. The electric heating method of this preferred solution is controllable, safe and reliable.

[0022] As an option, the device also includes a leather edge shaping device for shaping the edge of the leather case using a shaping wheel to improve the appearance of the leather edge. This preferred solution improves the appearance of the leather edge and enhances the quality of the product.

[0023] As an option, the shaping device includes a leather edge pressure wheel, a shaping wheel, a shaping wheel frame, and a driving cylinder component. In this preferred solution, the pressure wheel cooperates with the shaping wheel to achieve leather edge shaping, and the structure is simple and practical.

[0024] Preferably, the driving devices in the pressing and fixing mechanism and / or the lifting and smoothing mechanism are cylinders or mechanical springs; and the tensioning driving device in the edge leather tensioning mechanism is a pneumatic device or a mechanical device. This preferred solution provides optional drive options and good scalability.

[0025] As an advantage, the surfaces of the short roller and the long roller are made of a material with a certain friction coefficient and softness, such as rubber. In this preferred solution, the roller material is reasonably selected and has good compatibility with the surface of the leather cover.

[0026] Preferably, the widthwise assembly includes a short roller, a first roller arm, a short shaft, and a first torsion spring; the thin shafts at both ends of the short roller are rotatably mounted in the shaft holes at the protruding ends of the first roller arm; the shaft holes at the sunken ends of the first roller arm are fitted over the thin shafts at both ends of the short shaft; the protruding ends of the thin shafts at both ends of the short shaft are mounted in the shaft holes at both ends of the mounting grooves on the wide side of the table frame; and the first torsion spring is mounted between the outer ends of the gears at both ends of the short shaft and the first roller arm.

[0027] The longitudinal assembly includes a long tooth roller, a second tooth roller arm, a long shaft, and a second torsion spring. The thin shafts at both ends of the long tooth roller are rotatably mounted within the axial holes at the extended end of the second tooth roller arm. The axial holes at the recessed end of the second tooth roller arm fit over the thin shafts at both ends of the long shaft. The extended ends of the thin shafts at both ends of the long shaft are mounted within the axial holes at both ends of the mounting slots on the long sides of the table frame. A second torsion spring is installed between the outer ends of the gears at both ends of the long shaft and the second tooth roller arm. This preferred solution clearly and rationally connects the components, facilitating coordinated operation.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. The automation of leather binding process is realized, which greatly improves the binding efficiency.

[0030] 2. The mechanized pressing, smoothing and tightening mechanism is used to replace manual operation, and the quality is stable.

[0031] 3. The action of pressure and roller makes the surface of the leather cover smooth and flat without any knock marks.

[0032] 4. Use the leather's resilience to achieve active tightening and reverse wrapping to avoid wrinkle defects.

[0033] 5. Preheating treatment enhances the flexibility of the leather cover and reduces binding quality issues.

[0034] 6. Edge shaping makes the edging appearance fuller and smoother, improving the product texture.

[0035] 7. The overall structure is reasonable, the components are precisely matched, and the operation is reliable and smooth.

[0036] 8. It adopts pneumatic or mechanical spring drive mode, with stable power and strong scalability.

[0037] Achieving standardized and batch production through mechanical automation can greatly improve output and product consistency, reduce labor intensity, and is worthy of promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the box structure;

[0039] Figure 2 is a schematic structural diagram of the present invention (wherein the leather tensioning mechanism is not shown);

[0040] Figure 3 is a schematic diagram of the operation of the present invention (wherein the leather tensioning mechanism is shown);

[0041] Figure 4 yes Figure 3 The partial enlarged view at point A in the middle shows the structure of the tooth roller part;

[0042] Figure 5 is a schematic diagram of the operation of the present invention (partially cut away to facilitate observation of the internal structure);

[0043] Figure 6 It is a schematic diagram of the relevant parts in the leather tensioning mechanism;

[0044] Figure 7 yes Figure 6 The partial enlarged view at point B in the middle shows the structure of the tooth roller part from another angle.

[0045] Markings in the figure:

[0046] Box 01, leather cover 011, wooden box 012, third cylinder 033, downward pressing and fixing mechanism 21, fuselage frame 211, pressure plate 212, pressing platform 213, lifting shaft 214, lifting and smoothing mechanism 22, short roller 221, short roller seat 222, long roller 223, long roller seat 224, slotted plate 225, guide shaft 226, support plate 227, leather tensioning mechanism 23, widthwise component 231, short tooth roller 1a, short axis 1c, lengthwise component 232, long tooth roller 2a, long axis 2c, table frame 233, bushing 234, spring 235, pin 236, first tooth roller arm 1b, first torsion spring 1d, second tooth roller arm 2b, second torsion spring 2d, fourth cylinder 034. DETAILED DESCRIPTION

[0047] The following is combined with Figure 1-7 The present invention is further described by way of the following embodiments:

[0048] Example 1

[0049] A leather cover binding auxiliary device for a Pilates core bed box 01 is used to replace manual tightening and smoothing of the four sides of the leather cover. It can also pull the extended edge of the leather cover toward the four inner side walls and the inner bottom of the wooden box, so that the operator can directly use a binding machine to fix the leather to the wooden box.

[0050] It mainly includes the following institutions:

[0051] 1. Pressing and fixing mechanism 21: Used to press and fix the bottom of the wooden box 012 with the leather cover to prevent the box from shifting during the binding process. The pressing mechanism uses a pneumatic cylinder or a mechanical spring to achieve the pressing.

[0052] 2. Lifting and smoothing mechanism 22: used to lift the four side parts of the leather case 011 upwards and smooth them through hydraulic devices or mechanical devices to make the edges of the leather case smooth and neat.

[0053] 3. Leather tensioning mechanism 23: After the leather is lifted and smoothed, this mechanism is activated, leveraging the resilience of the leather edges to pull them against the four inner walls of the box. Simultaneously, the leather edges are turned over to cover the edge of the box. This tensioning and turning is accomplished using either a pneumatic or mechanical device.

[0054] The auxiliary binding device integrates pressing, smoothing and tensioning, and can effectively improve the binding quality and efficiency of leather cases and wooden boxes.

[0055] like Figure 2 As shown, the downward pressing and fixing mechanism 21 includes a fuselage frame 211, a pressure plate 212 arranged at the connection of the fuselage frame 211, a pressing platform 213 arranged at the upper end of the pressure plate 212, a lifting shaft 214 for installing the pressing platform 213, and a third cylinder 033 for driving the lifting shaft 214. The fuselage frame 211 is composed of a lower rectangular frame structure and an upper gantry structure. The pressure plate 212 is fixed to the upper part of the rectangular frame structure at the intersection of the upper and lower parts of the fuselage frame 211. The pressing platform 213 is suspended above the pressure plate 212 and fixed to the lower end of the lifting shaft 214. The upper end of the lifting shaft 214 is fixed to the output end of the third cylinder 033. The pressing platform 213 is pressed toward or away from the pressure plate 212 by the extension and contraction of the output end of the third cylinder 033. The box 01 that needs to be pressed between the pressure plate 212 and the pressing platform 213 is automatically corrected by the lifting and smoothing mechanism 22.

[0056] The lifting and smoothing mechanism 22 includes a short roller 221 in the width direction, a short roller seat 222 for installing the short roller 221, a long roller 223 in the length direction, a long roller seat 224 for installing the long roller 223, a slotted plate 225 for installing the roller seat, a guide shaft 226 for fixing the slotted plate 225, a support plate 227 for fixing the guide shaft 226, and a fourth cylinder 034 for pushing the support plate 227. The thin shafts at both ends of the two short rollers 221 are inserted into the shaft holes of the short roller seat 222. The short roller seat 222 is fixed at the two corners of the wide side of the rectangular slot of the slotted plate 225. The thin shafts at both ends of the two long rollers 223 are inserted into the shaft holes of the long roller seat 224. In the hole, the long roller seat 224 is fixed at the two corners of the long side of the rectangular slot of the slot plate 225. The rectangle formed by the two short rollers 221 and the two long rollers 223 is slightly smaller than the rectangular slot of the slot plate 225. The upper ends of the four guide shafts 226 are fixed to the lower side of the slot plate 225, passing through the axial holes of the pressure plate 212 and fixed to the upper side of the support plate 227. The middle of the lower side of the support plate 227 is fixed to the output shaft end of the fourth cylinder 034. The extension and contraction of the output end of the fourth cylinder 034 pushes the slot plate 225 and the rollers installed thereon to move up and down. When the slot plate 225 rises to the highest point, the leather tensioning mechanism 23 starts to move downward.

[0057] The leather tensioning mechanism 23 includes a widthwise component 231 , a lengthwise component 232 , a table-shaped frame 233 for fixing the two sets of components, a sleeve 234 for fixing the table-shaped frame 233 , a spring 235 for pressing down the table-shaped frame 233 , and a pin 236 for installing the spring 235 .

[0058] The widthwise assembly 231 includes a short roller 1a with sharp teeth on its radial surface for engaging leather, a first roller arm 1b, a short shaft 1c, and a first torsion spring 1d. The thin shafts at both ends of the short roller 1a are rotatably mounted within the axial holes at the extended end of the first roller arm 1b. Gears are machined into the ends of the working sections of the short roller 1a. The axial holes at the recessed ends of the first roller arm 1b fit over the thin shafts at both ends of the short shaft 1c. The extended ends of the thin shafts at both ends of the short shaft 1c are mounted within the axial holes at both ends of the mounting slots on the wide side of the platform 233. Gears are also machined into the ends of the working sections of the short shaft 1c, which mesh with the gears at both ends of the short roller 1a. The main purpose of the short shaft 1c is to provide support for the short roller 1a and reduce its flexible deformation during operation.

[0059] Longitudinal assembly 232 includes a long roller 2a with sharp teeth on its radial surface for engaging leather, a second roller arm 2b, a long shaft 2c, and a second torsion spring 2d. The thin shafts at each end of long roller 2a are rotatably mounted within the axial holes at the extended ends of another set of second roller arms 2b. Gears are also machined on both ends of the working sections of long roller 2a. The axial holes at the recessed ends of the second roller arms 2b fit over the thin shafts at both ends of long shaft 2c. The extended ends of the thin shafts at both ends of long shaft 2c are mounted within the axial holes at both ends of the mounting slots on the long sides of the table frame 233. Gears are also machined on both ends of the working section of long shaft 2c, which mesh with the gears at both ends of long roller 2a. The main purpose of long shaft 2c is to provide support for long roller 2a and reduce flexible deformation during operation.

[0060] A first torsion spring 1d is installed between the outer end of the gear at both ends of the long axis 2a and the first tooth roller arm 1b, and a second torsion spring 2d is installed between the outer end of the gear at both ends of the long axis 2a and the second tooth roller arm 2b. The torsion spring always applies a downward force to the protruding end of the tooth roller arm. The upper surface of the table frame 233 is fixed to the lower end surface of the shaft sleeve 234. The shaft sleeve 234 is mounted on the lifting shaft 214. The spring 235 is mounted on the pin shaft 236. The pin shaft 236 passes through the pin hole on the shaft sleeve 234 and is fixed to the pressure platform 213.

[0061] With reference to all the accompanying drawings, the working process of the equipment is as follows:

[0062] Place the box 01 with the opening facing upwards into the slot of the slot plate 225 and place it on the pressure plate 212. The two short rollers 221 and the two long rollers 223 have basic positioning limits for the position of the box 01. The third cylinder 033 is started, and the press table 213 moves downward to press against the pressure plate 212. Figure 3 and Figure 5 When the pressing platform 213 moves down to about 5-6cm close to the bottom surface of the box 01, the outer circumferences of the two short-tooth rollers 1a and the two long-tooth rollers 2a begin to closely contact the leather cover (the frame composed of the short-tooth rollers 1a and the long-tooth rollers 2a is just basically consistent with the inner space size of the box). The pressing platform 213 continues to move down, and the spring 235 is compressed. At the same time, the two short-tooth rollers 1a and the two long-tooth rollers 2a also overcome the torsion force of the torsion spring at one end in the friction with the leather cover and rotate until the tooth tips enter the leather. The pressing platform 213 continues to move down until the box 01 is firmly pressed and fixed.

[0063] The fourth cylinder 034 is activated, pushing the slotted plate 225 upward via the guide shaft 226. The short rollers 221 and long rollers 223 fixed thereon are pressed against the four sides of the initially covered box 01 and roll upward, compacting and smoothing the outer leather cover 011. During this process, the rebound force of the spring 235 causes each side of the leather cover to exert a pulling force toward the bottom of the box. This pre-tightening force prevents the leather cover from wrinkling during the smoothing process, thereby achieving reverse wrapping.

[0064] Finally, the leather case 011 and the wooden box 012 are fixed together manually with air gun nails, the box 01 is removed, and the edges are trimmed manually to complete a processing cycle.

[0065] Example 2

[0066] On the basis of Example 1, in order to improve the binding quality, the equipment adds a preheating device, which can preheat the leather cover to a certain temperature before binding, thereby enhancing the ductility and flexibility of the leather cover, facilitating subsequent stretching and flattening, and reducing the occurrence of defects such as wrinkles and peeling.

[0067] The preheating device includes a resistance heating tube, a tube holder, a supporting tube rack, and a drive spring. The length of the resistance heating tube matches the length and width of the wooden box, allowing the box to be placed inside for preheating. The tube holder is mounted on the machine base to support and position the resistance heating tube. The tube rack extends through the tube holder and can be vertically extended and retracted by a spring. A push mechanism pushes the heated leather case downward onto the wooden box.

[0068] The provision of the preheating device allows the leather cover to be preheated before stretch binding, reduces the load, and facilitates the smooth progress of subsequent processes.

[0069] Example 3

[0070] On the basis of Example 1, in order to further improve the effect of reverse hemming, the device adds a leather edge shaping device. Before the final tightening and binding, the rotation friction of the shaping wheel is used to shape the edge of the leather case, making the outline and lines of the leather edge more regular and smooth, thereby improving the appearance.

[0071] The shaping device includes a leather edge pressing wheel, a shaping wheel, a shaping wheel frame, and a propulsion cylinder. The pressing wheel is fixed to one side of the wooden box, pressing the leather edge into the gap between it and the box surface. The shaping wheel can move back and forth relative to the leather edge, repeatedly squeezing and shaping it. The cylinder drives the shaping wheel frame to extend, driving the shaping wheel to shape the leather edge.

[0072] The shaping device makes the leather edge contour fuller and neater through wheel pressing and squeezing, thus improving the refinement of the product.

[0073] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A leather binding auxiliary device for Pilates core bed box, characterized in that , including a pressing and fixing mechanism (21), a lifting and smoothing mechanism (22) and a leather tensioning mechanism (23); The pressing and fixing mechanism (21) is used to press and fix the rectangular wooden box (01) fitted with the leather case; The lifting and smoothing mechanism (22) is used to lift the four side parts of the leather cover (011) upward and smooth them, and includes a short roller (221) in the width direction, a long roller (223) in the length direction, a slotted plate (225), a guide shaft (226), a supporting plate (227) and a cylinder (034) for driving the supporting plate to rise and fall; The leather tensioning mechanism (23) is used to pull the leather toward the four walls of the wooden box by utilizing the resilience of the leather edge after it is lifted and smoothed, and comprises a widthwise component (231), a lengthwise component (232), a table-shaped frame (233), a shaft sleeve (234), a spring (235), and a pin (236); the widthwise component (231) and the lengthwise component (232) respectively comprise a toothed roller with sharp teeth, a support arm, and a corresponding transmission coupling device; the toothed rollers of the widthwise component (231) and the toothed rollers of the lengthwise component (232) form a rectangular frame that matches the empty space size of the rectangular wooden box.

2. The device according to claim 1, characterized in that The downward pressing and fixing mechanism (21) comprises a body frame (211), a pressure plate (212), a pressing platform (213), a lifting shaft (214), and a cylinder (033) for driving the lifting shaft (214); the pressing platform (213) is fixed to the lower end of the lifting shaft (214), and the lifting shaft is driven up and down by the cylinder to lift or press the pressing platform, thereby achieving compression and fixing of the wooden box.

3. The device according to claim 1, characterized in that The lifting and smoothing mechanism (22) further includes a short roller seat (222) and a long roller seat (224); the roller seat is fixed on the slot plate (225), and the slot plate (225) is fixed on the supporting plate (227) through the guide shaft (226); the cylinder (034) drives the roller group to lift and smooth the leather cover.

4. The device according to claim 1, characterized in that , also includes a preheating device for preheating the leather case to a certain temperature to improve its ductility.

5. The device according to claim 4, characterized in that The preheating device includes an electric heating tube, a tube seat, a tube rack, and a driving spring component.

6. The device according to claim 1, characterized in that , also includes a leather edge shaping device, which is used to shape the edge of the leather case using a shaping wheel to improve the appearance of the leather edge.

7. The device according to claim 6, characterized in that The shaping device includes a leather edge pressure wheel, a shaping wheel, a shaping wheel frame, and a driving cylinder component.

8. The device according to any one of claims 1 to 7, characterized in that The driving device in the pressing and fixing mechanism (21) and / or the lifting and smoothing mechanism (22) is selected from a cylinder or a mechanical spring; the tensioning driving device in the leather tensioning mechanism (23) is selected from either a pneumatic device or a mechanical device.

9. The device according to any one of claims 1 to 7, characterized in that The surfaces of the short roller (221) and the long roller (223) are made of rubber having a certain friction coefficient and softness.

10. The device according to claim 1, characterized in that The widthwise component (231) comprises a short tooth roller (1a), a first tooth roller arm (1b), a short shaft (1c), and a first torsion spring (1d); the thin shafts at both ends of the short tooth roller (1a) are rotatably mounted in the shaft holes at the protruding ends of the first tooth roller arm (1b); the shaft holes at the sunken ends of the first tooth roller arm (1b) are fitted onto the thin shafts at both ends of the short shaft (1c); the protruding ends of the thin shafts at both ends of the short shaft (1c) are mounted in the shaft holes at both ends of the mounting groove on the wide side of the table-shaped frame (233); and the first torsion spring (1d) is mounted between the outer ends of the gears at both ends of the short shaft (1c) and the first tooth roller arm (1b); The longitudinal component (232) comprises a long tooth roller (2a), a second tooth roller arm (2b), a long shaft (2c), and a second torsion spring (2d); the thin shafts at both ends of the long tooth roller (2a) are rotatably mounted in the shaft holes at the protruding ends of the second tooth roller arm (2b); the shaft holes at the sunken ends of the second tooth roller arm (2b) are sleeved on the thin shafts at both ends of the long shaft (2c); the protruding ends of the thin shafts at both ends of the long shaft (2c) are mounted in the shaft holes at both ends of the mounting grooves on the long sides of the table-shaped frame (233); and the second torsion spring (2d) is mounted between the outer ends of the gears at both ends of the long shaft (2c) and the second tooth roller arm (2b).

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