Full-automatic device for tensioning cloth on wood frame or wood board and nailing code nails

Abstract

The utility model relates to a full-automatic device for tensioning cloth on a wooden frame or a wooden board and nailing a code nail, which comprises a rack, a movable frame, a first cloth tensioning mechanism, a first code nail nailing mechanism, a second cloth tensioning mechanism, a second code nail nailing mechanism, a third cloth tensioning mechanism, a fourth cloth tensioning mechanism, a fifth cloth tensioning mechanism, a sixth cloth tensioning mechanism, a fifth cloth tensioning mechanism and a sixth cloth tensioning mechanism, the first mechanism is longitudinally distributed along the movable frame, the second mechanism is transversely distributed along the movable frame, and the first mechanism comprises a longitudinal cloth clamping module and a first automatic nail changing code nail gun assembly arranged on one side of the longitudinal cloth clamping module; the second mechanism comprises a transverse cloth clamping module and a second automatic nail changing code nail gun assembly arranged on one side of the transverse cloth clamping module, a feeding bracket and a discharging bracket are arranged at the two ends of the movable frame, and an automatic corner folding mechanism is arranged between the feeding bracket and the discharging bracket. According to the device, the defects that an existing device for tensioning the cloth nail and the code nail by means of manpower, tools or equipment is still low in working efficiency, high in labor cost and time-consuming and labor-consuming are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of picture frame processing, and particularly relates to a device for automatically stretching cloth on a wooden frame or a wooden board and nailing staple nails. Background Art

[0002] The traditional method of stretching a canvas on a picture frame or a board is manual or with the help of some simple tools for stretching and nailing. For example, in the manual method of stretching the cloth, the worker uses a cloth stretching pliers to stretch the canvas and then nails it. Each time a nail is driven, the worker needs to stretch the canvas once. Manual operation is time-consuming and laborious, and the tightness of the stretched canvas is inconsistent, making it difficult to meet the requirements.

[0003] Therefore, many picture frame cloth stretching and stapling devices have emerged on the market. For example, a Chinese utility model patent with the patent number CN202222690702.X and the name of a device for automatically stretching cloth on a picture frame and automatically stacking discloses a device for automatically stretching cloth on a picture frame and automatically stacking, belonging to the technical field of picture frame and picture frame cloth stretching. It includes a frame. The first platform and the second platform are arranged in a sliding frame. Slide rails are arranged on both sides of the sliding frame, and the slide rails are arranged on the frame. A synchronous pulley is arranged at the lower part of the sliding frame. A synchronous belt is arranged on the synchronous pulley, and the other end of the synchronous belt is provided with another synchronous pulley. The synchronous pulley is connected to a synchronous motor, and the synchronous motor is fixed on the frame. A clamp is arranged at the upper part of the frame, and a row of staple guns is arranged at the rear of the clamp. However, the above patent still has the following technical problems: 1. Since picture frame cloth stretching and stapling need to be carried out on all four sides, but the existing devices can only stretch and staple on two sides, and the other two sides still need to be nailed manually. Therefore, there are still defects such as low work efficiency, high labor cost, time-consuming and laborious. 2. Multiple staple guns are arranged on the existing staple gun rack to work simultaneously, with high costs and unable to achieve automatic staple replacement. 3. The existing device does not have an automatic corner folding mechanism and cannot perform the workflow of folding the corners of the canvas during stapling. 4. The staple spacing of the existing device is restricted by the physical structure of the staple gun and cannot meet the requirement of a staple spacing smaller than the physical width of the staple gun. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for automatically stretching cloth on a wooden frame or a wooden board and nailing staple nails to solve the above technical problems.

[0005] To achieve the above object, the technical solution adopted by the present utility model is: a device for automatically stretching the cloth tightly on a wooden frame or a wooden board and nailing staples, including a machine frame, and a movable frame is arranged on the machine frame. It is characterized in that: a first mechanism for stretching the cloth tightly and nailing staples and a second mechanism for stretching the cloth tightly and nailing staples are successively arranged on the machine frame. The first mechanism for stretching the cloth tightly and nailing staples and the second mechanism for stretching the cloth tightly and nailing staples move up and down on the machine frame through an adjusting mechanism. The first mechanism for stretching the cloth tightly and nailing staples is longitudinally distributed along the movable frame, and the second mechanism for stretching the cloth tightly and nailing staples is transversely distributed along the movable frame. The first mechanism for stretching the cloth tightly and nailing staples includes a longitudinal cloth clamping module and a first automatic staple-changing stapler gun assembly arranged on one side of the longitudinal cloth clamping module. The second mechanism for stretching the cloth tightly and nailing staples includes a transverse cloth clamping module and a second automatic staple-changing stapler gun assembly arranged on one side of the transverse cloth clamping module. Feeding brackets and discharging brackets are respectively arranged at both ends of the movable frame. An automatic corner folding mechanism is arranged between the feeding bracket and the discharging bracket. A gripper support is arranged on one side of the transverse cloth clamping module, and a gripper assembly running synchronously with the transverse cloth clamping module is arranged below the gripper support.

[0006] Further, the longitudinal cloth clamping module includes two first linear slide table modules transversely arranged on the adjusting mechanism. Two groups of oppositely movable first staple gun racks and first cloth clamping assemblies are arranged between the two first linear slide table modules through the driving ends, and the first staple gun racks and the first cloth clamping assemblies are longitudinally distributed relative to the movable frame. The first automatic staple-changing stapler gun assembly is movably arranged along the horizontal direction of the first staple gun rack.

[0007] Further, the transverse cloth clamping module includes two second linear slide table modules longitudinally arranged on the adjusting mechanism. Two groups of oppositely movable second staple gun racks and second cloth clamping assemblies are arranged between the two second linear slide table modules through the driving ends, and the second staple gun racks and the second cloth clamping assemblies are transversely distributed relative to the movable frame. The second automatic staple-changing stapler gun assembly is movably arranged along the horizontal direction of the second staple gun rack.

[0008] Further, each of the first staple gun rack and the second staple gun rack includes a plurality of slide rails, a driving motor, a movable block and a lead screw. The driving motor drives the movable block to move along the horizontal direction of the slide rail through the lead screw. Both ends of the slide rail are fixed on the driving end through mounting seats. The movable block is sleeved on the lead screw. The first automatic staple-changing stapler gun assembly and the second automatic staple-changing stapler gun assembly are fixedly installed below the movable block and are slidably connected to the slide rail through sliders.

[0009] Further, both the first automatic nail-changing stapler assembly and the second automatic nail-changing stapler assembly include a stapler body, a support frame, a magazine, a feeding chute, and a pushing cylinder. The stapler body is fixed below the movable block through the support frame. One side of the slider is fixed to the top of the support frame, and the other end is slidably disposed within the slide rail. The feeding chute is fixed below the stapler body, and the outlet of the feeding chute is arranged relative to the nozzle of the stapler body. The magazine is fixedly installed on the upper surface of the feeding chute and is communicated with the feeding chute at the bottom. The pushing cylinder is fixed to one side of the feeding chute, and a pushing block is provided on the pushing end of the pushing cylinder. The pushing block moves within the feeding chute to push the nails in the magazine to the nozzle of the stapler body.

[0010] Further, both the first cloth clamping assembly and the second cloth clamping assembly include a cylinder frame. A plurality of mounting grooves are formed in the cylinder frame, and clamping cylinders are arranged in the mounting grooves. A first clamping plate is connected to the pushing end of the clamping cylinder through a first ball eye joint. A second clamping plate is provided on one side of the cylinder frame. A second ball eye joint is provided between the first clamping plate and the second clamping plate. The first clamping plate is rotatably arranged relative to the second clamping plate through the clamping cylinder.

[0011] Further, a notch is provided at one end of the first clamping plate away from the first ball eye joint, and a silica gel strip is installed in the notch. A stainless steel plate is installed at the clamping opening of the second clamping plate.

[0012] Further, the automatic corner folding mechanism includes a frame automatic centering device, a cloth automatic edge standing device, and a corner folding slide rail. The frame automatic centering device includes a frame placing device, a corner folding drive motor, a drive lead screw, a corner folding support, and corner folding pieces. The corner folding slide rail is fixed below the movable frame. Two sets of front and rear frame placing devices are movably arranged on the corner folding slide rail through a drive assembly. Two moving ends are sleeved on the drive lead screw, and corner folding supports are installed on both moving ends, and the corner folding pieces thereon are arranged oppositely. An inner guide rail is further provided in the frame placing device. A slider is provided inside the corner folding support, and the slider moves on the inner guide rail. The two side corner folding pieces move towards each other through the cooperation of the corner folding drive motor and the drive lead screw to fold the canvas thereon.

[0013] Further, the cloth automatic edge standing device is arranged on one side of the frame placing device. The cloth automatic edge standing device includes a plurality of side edge standing cylinders and a middle edge standing cylinder. A standing edge support is provided on the pushing end of the side edge standing cylinder. The side edge standing cylinder and the middle edge standing cylinder at the rear of corner folding are used to complete edge standing. A notch for the pushing end of the middle edge standing cylinder to move is formed in the standing edge support. A centering cylinder is further provided on the pushing end of the middle edge standing cylinder to place the picture frame in the center for convenient corner folding. The pushing end of the centering cylinder is arranged relative to the notch.

[0014] Furthermore, the adjustment mechanism includes an optical axis fixed below the first linear slide module and the second linear slide module, the other end of the optical axis is connected to a lifting bracket, a moving motor is movably provided on the lower bottom surface of the frame, the lifting bracket is connected to a screw rod, a synchronous wheel and a synchronous belt, the lower bottom surface of the frame is lifted and lowered by a motor driving the screw rod, and the moving motor drives the lifting bracket to move up and down through the screw rod and the synchronous belt.

[0015] Furthermore, the feed bracket is provided with two automatic frame clamping bars, which are connected to the motor through a screw rod and are used to clamp and release materials of various sizes in the feed bracket.

[0016] Furthermore, the gripping assembly includes a gear steering box and at least two groups of gripping frames, the two groups of gripping frames are connected by a transmission shaft and the gear steering box, a number of clamping cylinders arranged opposite to each other are provided under the two groups of gripping frames, one end of the gear steering box away from the transmission shaft is connected by a transmission connection with a second linear slide module, and the second linear slide module drives the gripping assembly to operate synchronously.

[0017] Through the above technical solution, compared with the prior art, the utility model has the following beneficial effects: 1. By arranging a mechanism for stretching the first cloth and nailing staples on the frame and a mechanism for stretching the second cloth and nailing staples, and arranging the first mechanism and the second mechanism longitudinally and transversely relative to the movable frame respectively. During use, place the frame with the cloth on the feeding bracket, start the movable frame, and make the movable frame move horizontally along the frame to the lower part of the first mechanism. At this time, the cloth clamping assembly closes to clamp the cloth, and the motor rotates the lead screw to drive the cloth clamping assembly to move and stretch the cloth, wrapping the edge of the cloth around the picture frame. Then, the first mechanism drives the picture frame to move upward through the adjusting mechanism. At this time, the movable frame returns to its position, and the automatic corner folding mechanism is moved to the lower part of the first mechanism with the picture frame. The first mechanism drives the picture frame to move downward to the nailing height through the adjusting mechanism, and starts the first automatic staple-changing stapler gun assemblies on both sides to nail staples step by step along the front and rear sides of the picture frame. The above is the process of nailing staples on the front and rear sides of the picture frame. Then, the adjusting mechanism drives the cloth clamping assembly to release the picture frame, and the picture frame is placed in the automatic corner folding mechanism. At this time, start the centering air cylinder to center the picture frame to the specified position. After that, the two relatively arranged corner folding pieces in the automatic corner folding mechanism move relative to each other through the corner folding motor, pushing the canvas upward to wrap it around the corner folding edges on the frame edge. Then, the movable frame moves again to move the automatic corner folding mechanism to the lower part of the second mechanism, and at the same time start the air cylinder to stand up the cloth edge. The operating principle of the mechanism for stretching the second cloth and nailing staples is the same as that of the mechanism for stretching the first cloth and nailing staples, and is used to nail the left and right sides of the picture frame. Finally, the picture frame with staples nailed on all four sides is placed on the discharging bracket through the second cloth clamping assembly, and then the picture frame is taken out by the gripper to complete the whole process of nailing staples on the four sides of the picture frame, so as to solve the defects of the existing devices for manually or semi-automatically stretching the cloth and stretching the frame, such as low work efficiency, high labor cost, time-consuming and laborious.

[0018] 2. An automatic staple-changing stapler gun assembly that can move horizontally along the gun nail rack is arranged on the gun nail rack. The automatic staple-changing stapler gun assembly is provided with a feeding groove under the stapler gun body, a magazine communicated with the feeding groove on the upper surface of the feeding groove, and a pushing air cylinder on one side thereof. A pushing block is arranged on the pushing end of the pushing air cylinder, and the pushing block is located behind the gun nail. A notch for the pushing block to move is arranged on one side of the feeding groove. During use, the gun nails are stacked in the magazine from top to bottom in sequence. When the stapler gun body needs to replace the gun nails, the pushing air cylinder will drive the pushing block to move forward from the end of the feeding groove, and drive the gun nails in the feeding groove to move forward until they are located under the nozzle of the stapler gun body. Then, the pushing block returns to its position, and the gun nails in the magazine will automatically fall into the feeding groove to achieve the replenishment effect. Through the above method, the defects of the existing cloth stretching and stapling device with high cost and inability to automatically replace staples are solved.

[0019] 3. By setting up an automatic corner folding mechanism as a necessary step before the secondary fabric stretching and stapling, since the existing secondary fabric stretching and stapling are currently carried out by manual corner folding before the stretching and stapling can be performed. Therefore, the automatic corner folding mechanism can reduce labor costs and enable the fabric stretching and stapling device to achieve complete four-sided automatic fabric stretching and stapling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 Structural schematic diagram of the present invention;

[0022] Figure 2 Of the present invention Figure 1 Partial enlarged structural schematic diagram;

[0023] Figure 3 Structural schematic diagram of the automatic staple gun replacement component of the present invention;

[0024] Figure 4 Structural schematic diagram of the fabric clamping module cylinder frame of the present invention;

[0025] Figure 5 Side view structural schematic diagram of the fabric clamping module of the present invention;

[0026] Figure 6 Structural schematic diagram of the fabric clamping module of the present invention;

[0027] Figure 7 Structural schematic diagram of the main body of the automatic corner folding mechanism of the present invention;

[0028] Figure 8 Structural schematic diagram of the frame placing device of the present invention;

[0029] Figure 9 Another perspective structural schematic diagram of the frame placing device of the present invention;

[0030] Figure 10 Structural schematic diagram of the gripper assembly of the present invention;

[0031] The reference numeral information of the utility model is as follows:

[0032] 1. Frame; 2. Movable frame; 3. Mechanism for tensioning the cloth and stapling; 4. Mechanism for tensioning the cloth and stapling the second time; 5. Longitudinal cloth clamping module; 6. First automatic nail-changing stapler assembly; 7. Transverse cloth clamping module; 8. Second automatic nail-changing stapler assembly; 9. Automatic corner folding mechanism; 10. Slide rail; 11. Driving motor; 12. Movable block; 13. Stapler body; 14. Support frame; 15. Magazine; 16. Feeding groove; 17. Pushing cylinder; 18. Pushing block; 19. Cylinder frame; 20. Installation groove; 21. Clamping cylinder; 22. First clamping plate; 23. Second clamping plate; 24. First ball eye joint; 25. Second ball eye joint; 26. Silicone strip; 27. Stainless steel plate; 28. Mounting seat; 30. Optical axis; 31. Lifting bracket; 32. Moving row; 33. Moving motor; 34. Connecting rod; 201. Incoming material bracket; 202. Outgoing material bracket; 203. Holder bracket; 901. Corner folding slide rail; 902. Frame placing device; 903. Corner folding driving motor; 904. Driving lead screw; 905. Corner folding bracket; 906. Corner folding piece; 907. Mobile end; 908. Side vertical edge cylinder; 909. Middle vertical edge cylinder; 910. Vertical edge bracket; 911. Centering cylinder; 100. Holder assembly; 1001. Gear steering box; 1002. Holder frame; 1003. Transmission shaft; 1004. Clamping cylinder; 1005. Connecting rod; 1006. Installation end;

[0033] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0034] The following will combine the accompanying drawings in the embodiments of the present utility model Figures 1-10 to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that all the directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0037] As Figures 1-10 shown in the first embodiment of the present utility model: a device for automatically stretching cloth (including but not limited to paper, leather, fabric, picture cores, flannelette materials, hereinafter collectively referred to as cloth) tightly on a wooden frame or wooden board and nailing staples, comprising a frame 1, a feeding bracket 201, a discharging bracket 202, and a movable frame 2 erected on the top of the frame 1. A first mechanism 3 for stretching the cloth and nailing staples (hereinafter referred to as the first mechanism) and a second mechanism 4 for stretching the cloth and nailing staples (hereinafter referred to as the second mechanism) are successively arranged on the frame 1. The first mechanism and the second mechanism move up and down on the frame 1 through an adjusting mechanism. The first mechanism is longitudinally distributed along the movable frame 2, and the second mechanism is transversely distributed along the movable frame 2. The first mechanism includes a longitudinal cloth clamping module 5 and a first automatic staple-changing stapler assembly 6 arranged on one side of the longitudinal cloth clamping module 5. The second mechanism includes a transverse cloth clamping module 7 and a second automatic staple-changing stapler assembly 8 arranged on one side of the transverse cloth clamping module 7. Feeding brackets 201 and discharging brackets 202 are respectively arranged at both ends of the movable frame 2. A gripper is erected behind the discharging bracket 202. An automatic corner folding mechanism 9 is arranged between the feeding bracket 201 and the discharging bracket 202. The feeding bracket 201 and the discharging bracket 202 are fixedly installed on the movable frame 2 and can move correspondingly as the movable frame 2 moves. A gripper support 203 is arranged on one side of the transverse cloth clamping module. A gripper assembly 100 that runs synchronously with the transverse cloth clamping module 7 is arranged below the gripper support 203. Two automatic frame clamping bars are arranged on the feeding bracket 201 and are connected by a lead screw and a motor for clamping and loosening various materials of different sizes in the feeding bracket.

[0038] The frame 1 is composed of an outer frame and an inner frame. A notch for placing the inner frame is formed between the outer frames. The movable frame 2 can move along the horizontal direction of the inner frame through a motor driving mechanism, and a slide rail is arranged on the upper surface of the inner frame. A slider matching with it is arranged below the movable frame 2. A control console is also arranged on one side of the frame 1. A central control module is arranged on the control console for controlling the movable frame 2, the first mechanism, the second mechanism, and the adjusting mechanism.

[0039] As Figures 1-2As shown: the longitudinal cloth clamping module 5 includes two first linear slide modules transversely arranged on the adjustment mechanism, two sets of first nail gun racks and first cloth clamping assemblies that can move in opposite directions are arranged between the two first linear slide modules through the driving end, and the first nail gun racks and the first cloth clamping assemblies are longitudinally distributed relative to the movable frame 2, and the first automatic nail changing code nail gun assembly 6 is arranged to move horizontally along the first nail gun rack. The first linear slide module includes two slide rails transversely arranged on the adjustment mechanism, and driving ends are arranged on both sides of the slide rails. A motor is installed at one end of the slide rail through a motor mounting seat, and the driving end of the motor is transmission-connected with a screw rod, and the screw rod and the driving end are transmission-connected. Specifically, the driving end moves on the slide rail through the cooperation of the screw rod and the motor and the slider below.

[0040] like Figure 1 As shown: the transverse cloth clamping module 7 includes two second linear slide modules longitudinally arranged on the adjusting mechanism, two groups of second nail gun racks and second cloth clamping assemblies that can move oppositely are arranged between the two second linear slide modules through the driving end, and the second nail gun racks and the second cloth clamping assemblies are distributed laterally relative to the movable frame 2, the second automatic nail changing code nail gun assembly 8 is movably arranged in the horizontal direction of the second nail gun rack, the second linear slide module includes two slide rails longitudinally arranged on the adjusting mechanism, and the remaining mechanisms and connection methods are the same as the first linear slide module.

[0041] Moreover, the two first linear slide modules and the two second linear slide modules are connected by synchronous wheels and synchronous belt transmission, so only one motor is needed to drive the driving ends on both sides to move relative to each other. Specifically, the synchronous wheels are respectively fixed on the screw rods on both sides, and are connected and driven by synchronous belts.

[0042] like Figures 1-2 As shown: the first nail gun rack and the second nail gun rack both include a plurality of slide rails 10, a drive motor 11, a movable block 12 and a screw rod. In this embodiment, two sets of slide rails 10 are used, and the drive motor 11 is arranged between the two sets of slide rails 10. The drive motor 11 drives the movable block 12 to move in the horizontal direction of the slide rail 10 through the screw rod. Both ends of the slide rail 10 are fixed on the driving end through the mounting seat 28. The movable block 12 is sleeved on the screw rod. The first automatic nail changing code nail gun assembly 6 and the second automatic nail changing code nail gun assembly 8 are fixedly installed below the movable block 12 and are slidably connected through the slider and the slide rail 10.

[0043] like Figure 3As shown in the figure: The first automatic nail-changing stapler assembly 6 and the second automatic nail-changing stapler assembly 8 both include a stapler body 13, a support frame 14, a magazine 15, a feeding groove 16, and a pushing cylinder 17. The stapler body 13 is fixed below the movable block 12 through the support frame 14. One side of the slider is fixed to the top of the support frame 14, and the other end is slidably arranged in the slide rail 10. The feeding groove 16 is fixed below the stapler body 13. The outlet of the feeding groove 16 is arranged relative to the nozzle of the stapler body 13. The magazine 15 is fixedly installed on the upper surface of the feeding groove 16, and its bottom is communicated with the feeding groove 16. The pushing cylinder 17 is fixed on one side of the feeding groove 16. A pushing block 18 is provided on the pushing end of the pushing cylinder 17. The pushing block 18 moves in the feeding groove 16 to push the nails in the magazine 15 to move to the nozzle of the stapler body 13.

[0044] An automatic nail-changing stapler assembly that can move horizontally along the nail rack is provided. The automatic nail-changing stapler assembly is provided with a feeding groove 14 below the stapler body 13, a magazine 15 communicating with the feeding groove 14 on the upper surface of the feeding groove 14, and a pushing cylinder 17 on one side thereof. A pushing block 18 is provided on the pushing end of the pushing cylinder 17. The pushing block 18 is located behind the nails. A notch for the pushing block 18 to move is provided on one side of the feeding groove 14. During use, the nails are stacked in the magazine 15 from top to bottom in sequence. When the stapler body 13 needs to replace the nails, the pushing cylinder 17 will drive the pushing block 18 to move forward from the end of the feeding groove 14 and drive the nails in the feeding groove 14 to move forward until they are located below the nozzle of the stapler body 13. Then the pushing block 18 returns to its original position, and the nails in the magazine 15 will automatically fall into the feeding groove 14 to achieve the replenishment effect. Through the above method, the defects of the existing cloth stapling device with high cost and inability to automatically replace nails are solved. In this embodiment, the stapler body 13 is controlled to be turned on or off by an external cylinder.

[0045] As Figures 4-6 As shown in the figure: The first cloth clamping assembly and the second cloth clamping assembly both include a cylinder frame 19. A plurality of mounting grooves 20 are provided on the cylinder frame 19, and mounting ears for fixing cylinders 21 are provided at the upper end of the cylinder frame 19. Clamping cylinders 21 are provided in the mounting grooves 20. A first clamping plate 22 is connected to the pushing end of the clamping cylinder 21 through a first ball eye joint 24. A second clamping plate 23 is provided on one side of the cylinder frame 19. A second ball eye joint 25 is provided between the first clamping plate 22 and the second clamping plate 23. The first clamping plate 22 is rotatably arranged relative to the second clamping plate 23 through the clamping cylinder 21.

[0046] As Figure 5As shown in the figure: One end of the first clamping plate 22 away from the first spherical eye joint 24 is provided with a notch, and a silica gel strip 26 is installed in the notch. A stainless steel plate 27 is installed at the clamping opening of the second clamping plate 23. By providing the silica gel strip 26, the problem of canvas damage during operation can be effectively avoided.

[0047] As Figures 7-9 shown in the figure: The automatic corner folding mechanism 9 includes a frame automatic centering device, a cloth automatic edge standing device, and a corner folding slide rail 901. The frame automatic centering device includes a frame placing device 902, a corner folding drive motor 903, a drive lead screw 904, a corner folding bracket 905, and a corner folding piece 906. The corner folding slide rail 901 is fixed below the movable frame 2. Two sets of frame placing devices 902 are movably arranged on the corner folding slide rail 901 through a drive assembly. The drive assembly is a combination of a drive motor and a lead screw to drive the two sets of frame placing devices 902 to move relatively. Specifically, the frame placing device 902 is movably sleeved on the lead screw 904 and is driven by the drive motor to move. Two moving ends 907 are sleeved on the drive lead screw 904. Corner folding brackets 905 are installed on both moving ends 907, and the corner folding pieces 906 thereon are arranged oppositely. An inner guide rail is further provided in the frame placing device 902. A slider is provided inside the corner folding bracket 905, and the slider moves on the inner guide rail. The two side corner folding pieces 906 move oppositely through the cooperation of the corner folding drive motor 903 and the drive lead screw 904 to fold the canvas thereon. The movable corner folding piece 906 can be suitable for picture frames of different sizes. In this embodiment, there are four sets, corresponding in pairs, and can move oppositely to wrap the canvas around the four corners of the picture frame. Two of the corner folding pieces 906 are arranged oppositely in an "L" shape to adapt to the corner folding on both sides of the picture frame.

[0048] As Figures 7-9 shown in the figure: The cloth automatic edge standing device is arranged on one side of the frame placing device 902. The cloth automatic edge standing device includes a plurality of side edge standing cylinders 908 and a middle edge standing cylinder 909. A standing edge bracket 910 is provided at the pushing end of the side edge standing cylinder 908. The side edge standing cylinder 908 and the middle edge standing cylinder 909 at the back of the corner folding are used to complete the edge standing. A notch for the pushing end of the middle edge standing cylinder 909 to move is opened on the standing edge bracket 910. A centering cylinder 911 is further provided at the pushing end of the middle edge standing cylinder 909 to place the picture frame in the center, facilitating corner folding. The pushing end of the centering cylinder 911 is arranged relative to the notch. The standing edge bracket 910 can move upward through the side edge standing cylinder 908. The standing edge bracket 910 can play a role in limiting the canvas.

[0049] The adjustment mechanism includes an optical axis 30 fixed below the first linear slide module and the second linear slide module. The other end of the optical axis 30 is connected to a lifting bracket 31. A moving motor 33 and a moving row 32 are movably provided on the lower bottom surface of the frame 1. The lifting bracket 31 is connected to a screw, a synchronous wheel and a synchronous belt. The lower bottom surface of the frame 1 is lifted and lowered by a motor-driven screw. The moving motor 33 drives the lifting bracket 31 up and down through the screw and the synchronous belt. A connecting seat is provided on the moving row 32. The moving motor 33 is driven and connected through the screw and the connecting seat to drive the moving row 32 to move. The moving row 32 is connected to the lifting bracket 31 through a connecting rod 34, and a vertical pole is provided on the inner side of the frame 1 to facilitate the movement of the lifting bracket 31. The lifting bracket 31 is sleeved on the vertical poles on both sides.

[0050] like Figure 10 As shown: the gripper assembly 100 includes a gear steering box 1001 and at least two sets of gripper frames 1002, the two sets of gripper frames 1002 are connected to the gear steering box 1001 through a transmission shaft 1003, a plurality of clamping cylinders 1004 arranged opposite to each other are arranged below the two sets of gripper frames 1002, one end of the gear steering box 1001 away from the transmission shaft 1003 is connected to the second linear slide module, the second linear slide module drives the gripper assembly 100 to run synchronously, the gripper frame 1002 includes an aluminum row for fixing the clamping cylinder 1004 and a fixed frame arranged above the aluminum row, the fixed frame is sleeved on the gripper bracket 203, a slide rail is arranged below the gripper bracket 203, a slider matching the slide rail is arranged in the fixed frame, and the fixed frame enables the gripper frame 1002 to move on the gripper bracket 20 through the cooperation of the slider and the slide rail. 3, a mounting end 1006 for transmission connection with the transmission shaft 1003 is provided on the top of the fixed frame, and two groups of holding frames 1002 are arranged opposite to each other. In this embodiment, two clamping cylinders 1004 are provided below each group of holding frames 1002, and the pushing ends of the clamping cylinders 1004 below the two groups of holding frames 1002 are arranged relatively. By starting the clamping cylinders 1004, the pushing ends of the clamping cylinders 1004 on both sides can be closed together to clamp the picture frame. At the same time, due to the provision of a gear steering box 1001, an output end on one side of the gear steering box 1001 is connected to the second linear slide module through a connecting rod 1005 and a universal joint, and the other output end is connected to the transmission shaft 1003, so that the second cloth clamping assembly and the holding frame assembly 100 below the second linear slide module run synchronously, so that the size can be adaptively adjusted according to the size of the frame.

[0051] The working principle of the utility model is as follows:

[0052] By setting a first mechanism and a second mechanism on the frame 1, and arranging the first mechanism and the second mechanism longitudinally and transversely relative to the movable frame 2 respectively. During use, place the frame with the cloth on the feeding bracket 201, start the movable frame 2, and move the movable frame 2 horizontally along the frame 1 to the lower part of the first mechanism. At this time, the cloth clamping assembly closes to clamp the cloth, and the motor rotates the lead screw to drive the cloth clamping assembly to move and tighten the cloth, wrapping the cloth edge around the picture frame. Then, the first mechanism drives the picture frame to move upward through the adjusting mechanism. At this time, the movable frame returns to its original position, and the automatic corner folding mechanism is moved to the lower part of the first mechanism with the picture frame. The first mechanism drives the picture frame to move downward to the nailing height through the adjusting mechanism, and starts the first automatic nail-changing stapler gun assemblies on both sides to gradually nail staples along the front and back sides of the picture frame. The above is the process of nailing staples on the front and back sides of the picture frame. Then, the adjusting mechanism drives the cloth clamping assembly to loosen the picture frame, and places the picture frame in the automatic corner folding mechanism 9. At this time, start the centering cylinder to center the picture frame to the specified position. After that, the corner folding pieces arranged in pairs in the automatic corner folding mechanism 9 move relative to each other through the corner folding motor, pushing the canvas upward to wrap it around the corner folding edges on the frame edge. Then, the movable frame moves again to move the automatic corner folding mechanism 9 to the lower part of the second mechanism, and at the same time start the cylinder to stand up the cloth edge. The operating principle of the second mechanism is the same as that of the first mechanism for tightening the cloth and nailing staples, and is used to nail staples on the left and right sides of the picture frame. Finally, the picture frame with staples nailed on all four sides is placed on the discharging bracket 202 through the second cloth clamping assembly, and then the picture frame is taken out by the gripper to complete the nailing process of all four sides of the picture frame, so as to solve the defects that the existing devices for tightening the cloth and the frame manually or semi-automatically still have low working efficiency, high labor cost, and are time-consuming and laborious.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic device for tightening a cloth on a wooden frame or wooden board and nailing staples, comprising a frame, and a movable frame is provided on the frame, characterized in that: A mechanism for first tensioning the fabric and stapling it and a mechanism for second tensioning the fabric and stapling it are successively arranged on the frame. The mechanism for first tensioning the fabric and stapling it and the mechanism for second tensioning the fabric and stapling it move up and down on the frame through an adjusting mechanism. The mechanism for first tensioning the fabric and stapling it is longitudinally distributed along the movable frame, and the mechanism for second tensioning the fabric and stapling it is transversely distributed along the movable frame. The mechanism for first tensioning the fabric and stapling it includes a longitudinal fabric clamping module and a first automatic nail-changing stapling gun assembly arranged on one side of the longitudinal fabric clamping module. The mechanism for second tensioning the fabric and stapling it includes a transverse fabric clamping module and a second automatic nail-changing stapling gun assembly arranged on one side of the transverse fabric clamping module. Feeding brackets and discharging brackets are respectively arranged at both ends of the movable frame. An automatic corner folding mechanism is arranged between the feeding bracket and the discharging bracket. A gripper support is arranged on one side of the transverse fabric clamping module, and a gripper assembly running synchronously with the transverse fabric clamping module is arranged below the gripper support.

2. The device for automatically stretching the cloth tightly on a wooden frame or a wooden board and nailing staples thereto according to claim 1, wherein: The longitudinal fabric clamping module includes two first linear slideway modules transversely arranged on the adjusting mechanism. Two groups of oppositely movable first nail racks and first fabric clamping assemblies are arranged between the two first linear slideway modules through driving ends, and the first nail racks and the first fabric clamping assemblies are longitudinally distributed relative to the movable frame. The first automatic nail-changing stapling gun assembly is movably arranged along the horizontal direction of the first nail rack.

3. A device for automatically stretching a cloth tightly on a wooden frame or wooden board and nailing staples thereto, characterized in that: The transverse fabric clamping module includes two second linear slideway modules longitudinally arranged on the adjusting mechanism. Two groups of oppositely movable second nail racks and second fabric clamping assemblies are arranged between the two second linear slideway modules through driving ends, and the second nail racks and the second fabric clamping assemblies are transversely distributed relative to the movable frame. The second automatic nail-changing stapling gun assembly is movably arranged along the horizontal direction of the second nail rack.

4. A device for automatically stretching a cloth tightly on a wooden frame or a wooden board and nailing staple pins thereto, characterized in that: Each of the first nail rack and the second nail rack includes a plurality of slide rails, a driving motor, a movable block and a lead screw. The driving motor drives the movable block to move along the horizontal direction of the slide rail through the lead screw. Both ends of the slide rail are fixed on the driving end through mounting seats. The movable block is sleeved on the lead screw. The first automatic nail-changing stapling gun assembly and the second automatic nail-changing stapling gun assembly are fixedly installed below the movable block and are slidably connected to the slide rail through sliders.

5. A device for automatically stretching a cloth tightly on a wooden frame or wooden board and nailing staples thereto, characterized in that: Each of the first automatic nail-changing stapling gun assembly and the second automatic nail-changing stapling gun assembly includes a stapling gun body, a support frame, a magazine, a feeding trough and a pushing cylinder. The stapling gun body is fixed below the movable block through the support frame. One side of the slider is fixed at the top end of the support frame, and the other end is slidably arranged in the slide rail. The feeding trough is fixed below the stapling gun body. The outlet of the feeding trough is arranged opposite to the nozzle of the stapling gun body. The magazine is fixedly installed on the upper surface of the feeding trough and is communicated with the feeding trough at the bottom. The pushing cylinder is fixed on one side of the feeding trough. A pushing block is arranged on the pushing end of the pushing cylinder. The pushing block moves in the feeding trough and is used to push the nails in the magazine to the nozzle of the stapling gun body.

6. A device for automatically stretching a cloth tightly on a wooden frame or wooden board and nailing staples, characterized in that: The first cloth clamping assembly and the second cloth clamping assembly both include a cylinder frame. A number of mounting grooves are formed in the cylinder frame. Clamping cylinders are provided in the mounting grooves. A first clamping plate is connected to the pushing end of the clamping cylinder through a first spherical eye joint. A second clamping plate is provided on one side of the cylinder frame. A second spherical eye joint is provided between the first clamping plate and the second clamping plate. The first clamping plate is rotatably arranged relative to the second clamping plate through the clamping cylinder. A notch is provided at one end of the first clamping plate away from the first spherical eye joint. A silica gel strip is installed in the notch. A stainless steel plate is installed at the clamping opening of the second clamping plate.

7. A device for automatically stretching a cloth tightly on a wooden frame or wooden board and nailing staple nails, characterized in that: The automatic corner folding mechanism includes a frame automatic centering device, a cloth automatic edge standing device, and a corner folding slide rail. The frame automatic centering device includes a frame placing device, a corner folding drive motor, a drive lead screw, a corner folding support, and corner folding pieces. The corner folding slide rail is fixed below the movable frame. Two sets of front and rear frame placing devices are movably provided on the corner folding slide rail through a drive assembly. Two mobile ends are sleeved on the drive lead screw. Corner folding supports are installed on both of the mobile ends, and the corner folding pieces thereon are arranged oppositely. An inner guide rail is further provided in the frame placing device. A slider is provided inside the corner folding support, and the slider is movably arranged on the inner guide rail. The two corner folding pieces move towards each other through the cooperation of the corner folding drive motor and the drive lead screw to fold the canvas thereon.

8. A device for automatically stretching a cloth tightly on a wooden frame or wooden board and nailing staple nails, characterized in that: The cloth automatic edge standing device is arranged on one side of the frame placing device. The cloth automatic edge standing device includes a number of side edge standing cylinders and a middle edge standing cylinder. A standing edge support is provided at the pushing end of the side edge standing cylinder. The side edge standing cylinder and the middle edge standing cylinder at the rear of the corner folding are used to complete edge standing. A notch for the pushing end of the middle edge standing cylinder to move is formed in the standing edge support. A centering cylinder is further provided at the pushing end of the middle edge standing cylinder to place the picture frame in the center, facilitating corner folding. The pushing end of the centering cylinder is arranged relative to the notch.

9. A device for automatically tightening a cloth on a wooden frame or wooden board and nailing staple pins, characterized in that: The adjusting mechanism includes an optical axis fixed below the first linear slide table module and the second linear slide table module. The other end of the optical axis is connected to a lifting support. A moving motor is movably provided on the lower bottom surface of the machine frame. The lifting support is connected with a lead screw, a synchronous pulley, and a synchronous belt. The lower bottom surface of the machine frame drives the lead screw to lift through a motor. The moving motor drives the lifting support to move up and down through the lead screw and the synchronous belt.

Images