Automatic edge trimming frame

Abstract

This invention discloses an automatic edge-fastening machine, comprising: a frame; an edge-fastening mechanism disposed on the frame, the edge-fastening mechanism having multiple movable clamping guns, the translational trajectories of the multiple clamping guns forming an edge-fastening area; and a positioning fixture, a moving mechanism disposed on the frame, the positioning fixture being connected to the moving mechanism, the moving mechanism being able to drive the positioning fixture into or out of the edge-fastening area. This invention can automatically assemble the edge and support spring, reducing the labor intensity of workers and greatly improving production efficiency and quality.

Description

Technical Field

[0001] This invention relates to mattress manufacturing equipment, and more particularly to an automatic edge-fastening machine. Background Technology

[0002] The mattress consists of upper and lower sidewalls and support springs located between them. When assembling the sidewalls and support springs, the spring rings around the support springs need to be clamped to the sidewalls using clips. Currently, assembly is done manually. Workers hold a clip gun or fix it to a machine, adjusting the alignment of the support springs and sidewalls while simultaneously using the clip gun to assemble and fasten the spring rings on the sides of the support springs to the sidewalls. This assembly process is labor-intensive, inefficient, and the spacing between the clips is difficult to control precisely, resulting in uneven clip spacing and poor edge fastening quality. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic edge-fastening machine to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this invention is:

[0005] An automatic edge-fastening machine includes: a frame; an edge-fastening mechanism disposed on the frame, the edge-fastening mechanism having multiple movable clamping guns, the movable trajectories of the multiple clamping guns forming an edge-fastening area; and a positioning fixture, the frame having a moving mechanism disposed thereon, the positioning fixture being connected to the moving mechanism, the moving mechanism being able to drive the positioning fixture into or out of the edge-fastening area.

[0006] This technical solution has at least the following beneficial effects: The edge and support spring to be assembled are installed into the positioning fixture, which keeps the edge and support spring relatively fixed. Then, the moving mechanism sends the positioning fixture into the edge-fastening area. The clamping guns clamp and fasten the edge at the connection between the edge and the support spring. Multiple clamping guns are respectively facing multiple sides of the edge and can move horizontally along the length of the side of the edge. They clamp and fasten the edge at intervals at the connection between the edge and the support spring. After assembly, the moving mechanism moves the positioning fixture out of the edge-fastening area. In this way, the edge and support spring can be automatically assembled, reducing the labor intensity of workers and greatly improving production efficiency and quality.

[0007] As a further improvement to the above technical solution, the moving mechanism includes a sliding part and a lifting part. The sliding part includes a carriage and a translation drive. The lifting part includes a lifting drive and a lifting frame. The carriage is slidably connected to the frame. The translation drive is connected between the frame and the carriage. The translation drive can drive the carriage to move in the left and right direction. The lifting drive is connected between the lifting frame and the carriage. The lifting drive can drive the lifting frame to move in the up and down direction. The positioning fixture is connected to the lifting frame. The moving mechanism has a sliding part that can drive the positioning fixture to slide left and right, and a lifting part that can drive the positioning fixture to move up and down. Specifically, the carriage itself is limited by a sliding connection in the left and right direction between itself and the frame. The translation drive provides a driving force for the carriage to move in the left and right direction, so that the carriage can slide stably in the left and right direction on the frame. The lifting drive provides a driving force for the lifting frame to move in the up and down direction, so that the lifting frame can move in the up and down direction on the carriage. During operation, the sliding part first drives the positioning fixture to move horizontally below the edge-fastening area. Then the lifting part drives the positioning fixture to rise and enter the edge-fastening area. After the edge fastening is completed, the lifting part drives the positioning fixture to descend and exit the edge-fastening area. Then the sliding part drives the positioning fixture to move horizontally away from the edge-fastening mechanism.

[0008] As a further improvement to the above technical solution, the lifting unit also includes a scissor lift assembly, a drive motor, and a transmission shaft. The transmission shaft is rotatably connected to the slide, and the rotation axis of the transmission shaft extends in the left-right direction. The drive motor drives the transmission shaft. The scissor lift assembly has a fixed end and a sliding end on both its upper and lower sides. The fixed end and the sliding end on the upper side are both connected to the lifting frame, and the fixed end and the sliding end on the lower side are connected to the slide. The sliding end on the lower side is connected to a slide block, and the transmission shaft is threaded to the slide block. A scissor lift assembly is connected between the lifting frame and the carriage to improve the stability of the lifting frame during vertical movement. During operation, the lifting drive moves the lifting frame up or down, while the drive motor drives the transmission shaft to rotate forward or backward. This allows the slide, which is threaded into the transmission shaft, to move back and forth along the length of the transmission shaft. When the lifting frame rises, the slide moves along the transmission shaft towards the fixed end, and the scissor lift assembly unfolds upward. When the lifting frame falls, the slide moves along the transmission shaft away from the fixed end, and the scissor lift assembly folds downward. This allows the lifting frame to move up and down stably, and the lifting drive reduces the load on the drive motor.

[0009] As a further improvement to the above technical solution, sprockets are synchronously connected to the drive shaft, and at least two drive shafts are spaced apart along the front-to-back direction. Each drive shaft has two scissor lift assemblies connected to it via two slide blocks. A chain drives between any two adjacent sprockets. Furthermore, at least two more drive shafts are spaced apart along the front-to-back direction, and two scissor lift assemblies are arranged along the left-to-right direction on each drive shaft. This evenly distributed arrangement of multiple scissor lift assemblies between the lifting frame and the slide block better distributes the load on the lifting frame. Since each drive shaft is interconnected via sprockets and chains and driven by the same drive motor, it ensures that multiple scissor lift assemblies unfold and fold synchronously, further improving the stability of the lifting frame's vertical movement.

[0010] As a further improvement to the above technical solution, a guide post extending in the left-right direction is connected to the top side of the frame, and a main guide wheel and side guide wheels are connected to the bottom side of the slide. The outer side of the main guide wheel abuts against the top side of the guide post, and the outer sides of the two side guide wheels abut against the front and rear sides of the guide post, respectively. The bottom side of the slide slides on the guide post via the main guide wheel, which supports the slide and improves the stability of the slide sliding on the frame. Furthermore, the two front and rear side guide wheels abut against the front and rear sides of the guide post, which further limits the front-rear position of the slide and reduces its back-and-forth sway during translation, thereby further improving the accuracy of the translational movement of the positioning fixture.

[0011] As a further improvement to the above technical solution, at least two lifting units are arranged at intervals along the left and right direction. Each lifting unit is connected to a positioning fixture for positioning the edge and the support spring. In use, one lifting unit is located directly below the edge-fastening area. This lifting unit can drive the positioning fixture connected to it to rise into the edge-fastening area or descend out of the edge-fastening area for edge-fastening assembly by the edge-fastening mechanism. The other lifting unit is located beside the edge-fastening mechanism. At this time, the positioning fixture connected to this lifting unit is used for loading and unloading. After the edge-fastening mechanism completes the edge-fastening, the sliding part drives the two lifting units to move horizontally at the same time, so that the lifting unit with the reloaded workpiece moves to directly below the edge-fastening area, while the lifting unit with the completed edge-fastening moves to the side of the edge-fastening mechanism. In this way, the two positioning fixtures can be used to switch between processing or loading and unloading, reducing the waiting time required for loading and unloading workpieces and further improving processing efficiency.

[0012] As a further improvement to the above technical solution, the positioning fixture includes: a base frame; a lower positioning part connected to one side of the base frame, wherein the top side of the lower positioning part is provided with a positioning straight groove and a spring ring positioning groove, the positioning straight groove being located on the side away from the center of the base frame relative to the spring ring positioning groove, and multiple lower positioning parts arranged around the center of the base frame on the outer side of the base frame; and an upper positioning part located above the lower positioning part, wherein the bottom side of the upper positioning part is provided with a limiting straight groove and a spring ring limiting groove, the limiting straight groove being located on the side away from the center of the base frame relative to the spring ring limiting groove, and multiple lower positioning parts arranged around the center of the base frame. Place the edge to be fastened and the support spring on the bottom frame. Engage a portion of the edge into the positioning groove of the lower positioning part. Engage the spring ring at the bottom of the side of the support spring into the spring ring positioning groove. In this way, one lower positioning part can mutually position the support spring and a portion of the edge located on the lower side. Using multiple lower positioning parts surrounding the bottom frame, the four sides of the bottom side of the support spring can be respectively aligned with and fixed to the four sides of the edge. The upper positioning part is placed directly on the support spring, and the edge located on the top side is engaged in the limiting groove. Engage the spring ring at the top of the side of the support spring into the spring ring limiting groove, thereby achieving the connection and positioning of the edge and the support spring. Combined with the lower positioning part, the two edges can be connected and positioned on the upper and lower sides of the support spring respectively. Due to the simple overall structure, it is more convenient to use and more efficient.

[0013] As a further improvement to the above technical solution, the lower positioning part includes a connecting plate, a spring column, a support plate, and a positioning plate. The connecting plate is connected to the bottom frame, the bottom end of the spring column is connected to the connecting plate, the top end of the spring is connected to the support plate, and the positioning plate is disposed on the top side of the support plate. The positioning straight groove and the spring ring positioning groove are both disposed on the positioning plate. The connecting plate is installed and fixed on the bottom frame, and the support plate can abut against and support the side of the perimeter and the support spring. The spring ring positioning groove for clamping the spring ring and the positioning straight groove for clamping the perimeter are disposed on the positioning plate. The connecting plate and the support plate are connected to each other by the spring column. When the perimeter and the support spring press down on the support plate, the elastic support force provided by the spring rod to the support plate can make the perimeter and the support spring more tightly clamped in the positioning straight groove and the spring ring positioning groove, thereby improving the positioning effect of the perimeter and the support spring.

[0014] As a further improvement to the above technical solution, the upper positioning part includes a pressure plate and a limiting plate. The limiting plate is connected to the bottom side of the pressure plate. The limiting straight groove and the spring ring limiting groove are both provided on the limiting plate. Two limiting plates are arranged at intervals along their length direction opposite to the side of the bottom frame. The spring ring limiting grooves in the two limiting plates are inclined towards the bottom frame in a direction away from each other. The pressure plate is placed directly on the support spring. The limiting straight groove and the spring ring limiting groove on the limiting plate respectively clamp the top edge and the spring ring at the top of the support spring, thereby stabilizing their positional relationship and maintaining their relatively fixed state. Each upper positioning part has two spring ring limiting grooves for limiting the spring ring. The two spring ring limiting grooves are inclined and form a figure-eight shape, clamping different positions of the same spring ring on the support spring. This helps to prevent the spring ring from shifting or twisting, and better achieves the clamping and positioning of the support spring.

[0015] As a further improvement to the above technical solution, the fastening mechanism includes a drive assembly, which includes a guide plate, a linear drive, and a guide seat. The guide seat is slidably connected to the guide plate, and the linear drive is connected between the guide seat and the guide plate. The linear drive can drive the guide seat to move along the length direction of the guide plate. The clamping gun is connected to the guide seat. There are four drive assemblies. The guide plates in two drive assemblies are connected to the frame at intervals along the front-back direction. The guide plates in the other two drive assemblies are connected to two guide plates located on the frame. Four drive components can drive four clamping guns to move horizontally. Specifically, two guide plates spaced apart along the front-back direction are connected to the frame. Both guide plates are driven by linear drives to provide driving force to the guide seats in the left-right direction, which can drive the two guide seats to move in the left-right direction, thereby driving the two clamping guns to clamp the edge and the front and back sides of the support spring at intervals. The two guide plates spaced apart along the left-right direction are connected to two guide plates located on the frame. That is, the front and back ends of the two guide plates extending in the front-back direction are respectively placed on the left and right ends of the two guide plates extending in the left-right direction. The two guide plates extending in the front-back direction also have two linear drives, which can drive the two guide seats to move in the front-back direction, thereby driving the two clamping guns to clamp the edge and the left and right sides of the support spring at intervals. In this way, the edge and support spring can be automatically fastened together. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is an overall perspective view of the present invention;

[0018] Figure 2 This is a perspective view of the moving mechanism and positioning fixture of the present invention;

[0019] Figure 3 This is a perspective view of the fastening mechanism of the present invention;

[0020] Figure 4 This is a perspective view of the frame, moving mechanism, and positioning fixture of the present invention;

[0021] Figure 5 This is a perspective view of the lower positioning part of the present invention;

[0022] Figure 6 This is a perspective view of the upper positioning part of the present invention.

[0023] In the attached diagram: 100-Frame, 210-Clamping gun, 220-Guide plate, 230-Linear drive, 240-Guide seat, 300-Positioning fixture, 310-Base frame, 320-Lower positioning part, 321-Positioning straight groove, 322-Spring ring positioning groove, 323-Connecting plate, 324-Spring column, 325-Support plate, 326-Positioning plate, 327-Adjusting block, 328-First bolt, 329-First magnetic block, 330-Upper positioning part, 331-Limiting straight groove, 332- Spring ring limiting groove, 333-pressure plate, 334-limiting plate, 335-transition block, 336-second bolt, 337-second magnetic block, 410-slide carriage, 420-translation drive, 430-lifting drive, 440-lifting frame, 451-scissor lift assembly, 4511-fixed end, 4512-sliding end, 452-drive motor, 453-drive shaft, 454-slide block, 461-sprocket, 462-chain, 471-guide post, 472-main guide wheel, 473-side guide wheel. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0028] Reference Figure 1 An automatic edge-fastening machine includes a frame 100, an edge-fastening mechanism, and a positioning fixture 300. The edge-fastening mechanism is mounted on the frame 100 and has multiple movable clamping guns 210. The translational trajectories of the multiple clamping guns 210 form an edge-fastening area. A moving mechanism is provided on the frame 100, and the positioning fixture 300 is connected to the moving mechanism. The positioning fixture 300 is used to fix the edge relative to the support spring. The moving mechanism can drive the positioning fixture 300 into or out of the edge-fastening area.

[0029] As described above, the edge trimming and support spring to be assembled are inserted into the positioning fixture 300, which keeps the edge trimming and support spring relatively fixed. Then, the moving mechanism sends the positioning fixture 300 into the edge-fastening area. The clamping guns 210 clamp and fasten the edge trimming at the connection between the edge trimming and the support spring. Multiple clamping guns 210 are respectively positioned opposite multiple sides of the edge trimming and can move horizontally along the length of the side of the edge trimming. They clamp and fasten the edge trimming at intervals at the connection between the edge trimming and the support spring. After assembly, the moving mechanism moves the positioning fixture 300 out of the edge-fastening area. In this way, the edge trimming and support spring can be automatically assembled, reducing the labor intensity of workers and greatly improving production efficiency and quality.

[0030] The moving mechanism is mainly used to move the positioning fixture 300 into or out of the fastening area. It has various structural forms, such as directly moving the positioning fixture 300 into or out of the fastening area by vertical movement. Figure 2As shown, in this embodiment, the moving mechanism includes a sliding part and a lifting part. The sliding part includes a slide 410 and a translation drive 420. The lifting part includes a lifting drive 430 and a lifting frame 440. The slide 410 is slidably connected to the frame 100. The translation drive 420 is connected between the frame 100 and the slide 410. The translation drive 420 can drive the slide 410 to move in the left and right direction. The lifting drive 430 is connected between the lifting frame 440 and the slide 410. The lifting drive 430 can drive the lifting frame 440 to move in the up and down direction. The positioning fixture 300 is connected to the lifting frame 440. The moving mechanism has a sliding part that can drive the positioning fixture 300 to slide left and right, and a lifting part that can drive the positioning fixture 300 to move up and down. Specifically, the slide 410 itself is slidably connected to the frame 100 in the left and right direction. The translation drive 420 provides a driving force to the slide 410 in the left and right direction, so that the slide 410 can slide stably on the frame 100 in the left and right direction. The lifting drive 430 provides a driving force to the lifting frame 440 in the up and down direction, so that the lifting frame 440 can move on the slide 410 in the up and down direction. During operation, the sliding part first drives the positioning fixture 300 to move horizontally below the edge-fastening area. Then the lifting part drives the positioning fixture 300 to rise and enter the edge-fastening area. After the edge fastening is completed, the lifting part drives the positioning fixture 300 to fall and exit the edge-fastening area. Then the sliding part drives the positioning fixture 300 to move horizontally away from the edge-fastening mechanism.

[0031] In the above embodiment, only one lifting drive 430 can be provided, directly connected to the center of the lifting frame 440 for driving. To reduce the load required by a single lifting drive 430, four can be evenly connected between the lifting frame 440 and the sliding frame. In this case, the four lifting drives 430 are located at the four corners of the lifting frame 440. To further improve the stability of the lifting frame 440 when moving up and down, in this embodiment, the lifting part also includes a scissor lift assembly 451, a drive motor 452, and a transmission shaft 453. The transmission shaft 453 is rotatably connected to the sliding frame 410, and the rotation axis of the transmission shaft 453 extends in the left and right direction. The drive motor 452 is fixed to the sliding frame 410 and drives the transmission shaft 453. The scissor lift assembly 451 includes two upper connecting rods and two lower connecting rods. The middle parts of the two upper connecting rods are rotatably connected to each other, and the middle parts of the two lower connecting rods are rotatably connected to each other. The two upper connecting rods and the two lower connecting rods are respectively arranged in a cross configuration. The top ends of the rods are rotatably connected to the bottom ends of two upper connecting rods. At this time, the top end of one upper connecting rod and the bottom end of a lower connecting rod on the same vertical line are fixed ends 4511, while the top end of the other upper connecting rod and the bottom end of another lower connecting rod on the same vertical line are movable ends. The fixed end 4511 and the sliding end 4512 on the upper side are both connected to the lifting frame 440, and the fixed end 4511 and the sliding end 4512 on the lower side are connected to the carriage 410. The top end of one upper connecting rod and the bottom end of another lower connecting rod located on the same vertical line are both fixed ends 4511, and can rotate on the lifting frame 440 and the sliding frame. The top end of the other upper connecting rod is a sliding end 4512, which can rotate and slide on the lifting frame 440. The bottom end of the other lower connecting rod is a sliding end 4512, which can rotate and slide on the sliding frame. The sliding end 4512 is connected to a slide block 454, and the transmission shaft 453 is threaded to the slide block 454.

[0032] A scissor lift assembly 451 is also connected between the lifting frame 440 and the slide 410 to improve the stability of the lifting frame 440 when it moves up and down. During operation, the lifting drive 430 drives the lifting frame 440 to rise or fall, while the drive motor 452 drives the transmission shaft 453 to rotate forward or reverse, so that the slide 454, which is threaded with the transmission shaft 453, can move back and forth along the length extension direction of the transmission shaft 453. When the lifting frame 440 rises, the slide 454 moves along the transmission shaft 453 towards the fixed end 4511, and the scissor lift assembly 451 unfolds upward. When the lifting frame 440 falls, the slide 454 moves along the transmission shaft 453 away from the fixed end 4511, and the scissor lift assembly 451 folds downward. This allows the lifting frame 440 to rise and fall stably, and the lifting drive 430 can reduce the load on the drive motor 452.

[0033] The scissor lift assembly 451 can be provided as one or more. Specifically, sprockets 461 are synchronously connected to the drive shaft 453. At least two drive shafts 453 are spaced apart along the front-to-back direction. Two scissor lift assemblies 451 are connected to each drive shaft 453 through two slides 454. A chain 462 is connected between any two adjacent sprockets 461. At least two more drive shafts 453 are also spaced apart along the front-to-back direction. Two scissor lift assemblies 451 are provided on each drive shaft 453 along the left-to-right direction. In this way, multiple scissor lift assemblies 451 are evenly arranged between the lifting frame 440 and the slide 410, which can better distribute the load on the lifting frame 440 evenly. Each drive shaft 453 is interconnected with the chain 462 through the sprockets 461 and driven by the same drive motor 452, which can ensure that multiple scissor lift assemblies 451 keep up and down synchronously unfolding and folding, further improving the stability of the lifting frame 440's up and down movement.

[0034] In practical applications, the two slide blocks 454 connected to the same drive shaft 453 have opposite thread directions, which makes the sliding ends 4512 of the two connected scissor assemblies 451 slide in opposite directions. This helps to keep the center of force unchanged when driving the lifting frame 440 to move up and down, and improves the stability of the lifting frame 440.

[0035] The slide 410 is slidably connected to the frame 100, which can improve the stability of the slide 410 during sliding. In this embodiment, the top side of the frame 100 is connected to a guide post 471 extending in the left-right direction, and the bottom side of the slide 410 is connected to a main guide wheel 472 and a side guide wheel 473. The outer side of the main guide wheel 472 abuts against the top side of the guide post 471, and the outer side of the two side guide wheels 473 abuts against the front and rear sides of the guide post 471 respectively. The two side guide wheels 473 can be placed horizontally, so that they directly abut against the guide post 471 vertically in the front-back direction. Alternatively, the two side guide wheels 473 can be set at an angle in the lower front and lower rear directions respectively, so that the two side guide wheels 473 can both limit the relative front-back displacement of the slide 410 and limit the upward displacement of the slide. The bottom side of the slide 410 slides on the guide post 471 via the main guide wheel 472, which can support the slide 410 and improve the stability of the slide 410 sliding on the frame 100. In addition, the front and rear side guide wheels 473 abut against the front and rear sides of the guide post 471, which can further limit the front and rear position of the slide 410, reduce its back and forth sway during translation, and thus further improve the accuracy of the translational movement of the positioning fixture 300.

[0036] One lifting unit can drive a positioning fixture to rise and fall by 300 mm. To reduce the waiting time of the fastening mechanism, such as... Figure 4As shown, in this embodiment, two lifting units are spaced apart along the left-right direction. Each lifting unit is connected to a positioning fixture 300 for positioning the edge and the support spring. In use, one lifting unit is located directly below the edge-fastening area. This lifting unit can drive the positioning fixture 300 connected to it to rise into the edge-fastening area or descend out of the edge-fastening area for edge-fastening assembly by the edge-fastening mechanism. The other lifting unit is located beside the edge-fastening mechanism. At this time, the positioning fixture 300 connected to this lifting unit is used for loading and unloading. After the edge-fastening mechanism completes the edge-fastening, the sliding part drives the two lifting units to move horizontally at the same time, so that the lifting unit with the reloaded workpiece moves to directly below the edge-fastening area, while the lifting unit with the completed edge-fastening moves to the side of the edge-fastening mechanism. In this way, the two positioning fixtures 300 can be used to switch between processing or loading and unloading, reducing the waiting time required for loading and unloading workpieces and further improving processing efficiency.

[0037] The translation drive 420 is mainly used to drive the carriage 410 to move in the left and right directions. It can use electric guide rails, pneumatic push rods or hydraulic push rods to provide driving force. Since the carriage 410 has a large stroke, in order to reduce the space occupied by the translation drive 420, the translation drive 420 can use a structure in which a motor drives the transmission chain to rotate. In this case, the transmission chain is connected to the bottom side of the carriage 410. When the transmission chain rotates forward or backward, it can drive the carriage 410 to move in the left and right directions.

[0038] For positioning tooling 300, such as Figure 5 and Figure 6As shown, in this embodiment, the positioning fixture 300 includes: a base frame 310; a lower positioning part 320 connected to one side of the base frame 310, the top side of the lower positioning part 320 being provided with a positioning straight groove 321 and a spring coil positioning groove 322, the positioning straight groove 321 being located away from the center of the base frame 310 relative to the spring coil positioning groove 322, and multiple lower positioning parts 320 arranged around the center of the base frame 310 on the outer side of the base frame 310; and an upper positioning part 330 located above the lower positioning part 320, the bottom side of the upper positioning part 330 being provided with a limiting straight groove 331 and a spring coil limiting groove 332, the limiting straight groove 331 being located away from the center of the base frame 310 relative to the spring coil limiting groove 332, and multiple lower positioning parts 320 arranged around the center of the base frame 310. The edge to be fastened and the support spring are placed on the bottom frame 310. A part of the edge is snapped into the positioning groove 321 of the lower positioning part 320, and the spring ring at the bottom of the side of the support spring is snapped into the spring ring positioning groove 322. In this way, one lower positioning part 320 can position the support spring and a part of the edge located on the lower side. By using multiple lower positioning parts 320 around the bottom frame 310, the four sides of the bottom side of the support spring can be respectively aligned with the four sides of the edge and kept relatively fixed. The upper positioning part 330 is placed directly on the support spring and the edge located on the top side is snapped into the limiting groove 331. The spring ring at the top of the side of the support spring is snapped into the spring ring limiting groove 332, thereby realizing the connection and positioning of the edge and the support spring. In this way, combined with the lower positioning part 320, the two edges can be connected and positioned on the upper and lower sides of the support spring respectively. Due to the simple overall structure, it is more convenient to use and more efficient.

[0039] The lower positioning part 320 is mainly used to fix the bottom edge of the position relative to the bottom side of the support spring. In this embodiment, the lower positioning part 320 includes a connecting plate 323, a spring column 324, a support plate 325 and a positioning plate 326. The connecting plate 323 is connected to the bottom frame 310. The bottom end of the spring column 324 is connected to the connecting plate 323. The top end of the spring is connected to the support plate 325. The positioning plate 326 is disposed on the top side of the support plate 325. The positioning straight groove 321 and the spring ring positioning groove 322 are both disposed on the positioning plate 326. The connecting plate 323 is installed and fixed on the bottom frame 310. The support plate 325 can abut against the side of the perimeter and the support spring and support them. The spring ring positioning groove 322 for clamping the spring ring and the positioning straight groove 321 for clamping the perimeter are set on the positioning plate 326. The connecting plate 323 and the support plate 325 are connected to each other by the spring column 324. When the perimeter and the support spring press down on the support plate 325, the elastic support force provided by the spring rod on the support plate 325 can make the perimeter and the support spring more tightly clamped in the positioning straight groove 321 and the spring ring positioning groove 322, thereby improving the positioning effect of the perimeter and the support spring.

[0040] In practical applications, the connecting plate 323 is fixed to the base frame 310 in a detachable connection manner. For example, screws can be passed through the connecting plate 323 and connected to the base frame 310 to press the connecting plate 323 and fix it relative to the base frame 310. In order to more conveniently fix the lower positioning part 320 to any position of the base frame 310, an adjustment groove can be opened on the outer wall of the base frame 310. The adjustment groove extends along the length direction of the side of the base frame 310. A pull bracket is provided in the adjustment groove. The pull bracket can move along the length direction of the adjustment groove. After the bolt passes through the connecting plate 323 and extends into the adjustment groove to connect to the pull bracket, the connecting plate 323 is relatively fixed to the base frame 310. According to the usage requirements, the position of the pull bracket in the adjustment groove can be adjusted to adjust the installation and fixing position of the lower positioning part 320 on the base frame 310.

[0041] When it is necessary to adjust the position of the positioning groove 321 and the spring ring positioning groove 322, in addition to adjusting the position of the entire lower positioning part 320 on the bottom frame 310, the position of the positioning plate 326 itself can also be adjusted. Specifically, the lower positioning part 320 also includes an adjusting block 327 and a first bolt 328. The support plate 325 is provided with a lower waist-shaped hole, which extends along the length direction of the side of the bottom frame 310. The first bolt 328 passes upward through the lower waist-shaped hole and is connected to the adjusting block 327. The positioning plate 326 is connected to the support plate 325. The positioning plate 326 is fixed to the adjusting block 327, and the position of the positioning plate 326 can be adjusted to accommodate support springs of different specifications and sizes. Specifically, first loosen the first bolt 328, and the first bolt 328 can move back and forth in the length extension direction of the lower waist-shaped hole to adjust the position of the support plate 325 so that the spring ring limiting groove 332 on the positioning plate 326 can be engaged with the spring ring of the corresponding support spring. After the adjustment is completed, tighten the first bolt 328 again so that the adjusting block 327 is pressed against the support plate 325.

[0042] When there is only one positioning plate 326 in the lower positioning part 320, the positioning plate 326 can be set wider. This results in more positions for the positioning groove 321 and the spring ring positioning groove 322 to engage the spring ring. To improve the engaging effect of each lower positioning part 320 on the support spring and the surrounding edge, in this embodiment, two positioning plates 326 are arranged at intervals along the length of the side of the bottom frame 310. The spring ring positioning grooves 322 in the two positioning plates 326 are inclined towards the bottom frame 310 in mutually distancing directions. In each lower positioning part 320, two positioning plates 326 engage and position the support spring and the surrounding edge. The limiting grooves 331 in the two positioning plates 326 engage the surrounding edge, increasing the coverage area for engaging and positioning the surrounding edge. The spring ring positioning grooves 322 in the two positioning plates 326 form a figure-eight shape, engaging different positions of the same spring ring on the support spring, which helps prevent spring ring displacement and torsion, and better achieves the engaging and positioning of the support spring.

[0043] In some embodiments, a first magnetic block 329 is connected to the tray 325. The first magnetic block 329 generates a magnetic attraction between the support spring and the surrounding edge, which can strengthen the connection and positioning between the surrounding edge and the support spring. The first magnetic field and the tray 325 are detachably connected. For example, the first magnetic block 329 can be locked to the tray 325 with screws. In practical applications, the first magnetic block 329 can be installed on one side of the two positioning plates 326 that are directly opposite each other.

[0044] In this embodiment, the upper positioning part 330 includes a pressure plate 333 and a limiting plate 334. The limiting plate 334 is connected to the bottom side of the pressure plate 333. The limiting straight groove 331 and the spring ring limiting groove 332 are both disposed on the limiting plate 334. Two limiting plates 334 are arranged at intervals along the length direction of their opposite side to the bottom frame 310. The spring ring limiting grooves 332 in the two limiting plates 334 are inclined towards the bottom frame 310 in a direction that moves away from each other. The pressure plate 333 is placed directly on the support spring. The limiting straight groove 331 and the spring ring limiting groove 332 on the limiting plate 334 respectively clamp the top edge and the spring ring at the top of the support spring, thereby stabilizing their positional relationship and maintaining their relative fixed state. There are two spring ring limiting grooves 332 in each upper positioning part 330 for limiting the spring ring. The two spring ring limiting grooves 332 are inclined and form a figure-eight shape to clamp different positions of the same spring ring on the support spring, which helps to prevent the spring ring from shifting or twisting and better achieves clamping and positioning of the support spring.

[0045] Since the upper positioning part 330 can be placed directly on the support spring during use and does not need to be connected to the bottom frame 310, the positions of the limiting straight groove 331 and the spring ring limiting groove 332 within the upper positioning part 330, which are used to clamp and limit the edge and support spring respectively, can be adjusted directly by adjusting the placement position of the upper positioning part 330 during use. However, when there are multiple limiting plates 334, if different support springs and edge are replaced, the distance between the two limiting plates 334 needs to be adjusted accordingly. In order to allow the spring ring limiting groove 332 on the limiting plate 334 to be locked onto the spring ring on the top side of the support spring, in this embodiment, the upper positioning part 330 also includes a transition block 335 and a second bolt 336. The pressure plate 333 is provided with an upper waist-shaped hole, which extends along its length direction opposite to the side of the bottom frame 310. The second bolt 336 passes downward through the upper waist-shaped hole and is connected to the transition block 335. The limiting plate 334 is connected to the pressure plate 333. The limiting plate 334 is fixed on the transition block 335. The position of the limiting plate 334 can be adjusted to adapt to different specifications of bed nets. Specifically, by loosening the second bolt 336, the transition block 335 can adjust its position along the upper waist-shaped hole that limits the second bolt 336, so that the spring ring limiting groove 332 on the limiting plate 334 can be locked onto the corresponding spring ring on the top side of the support spring. After adjustment, the second bolt 336 is tightened again, so that the transition block 335 is pressed onto the pressure plate 333.

[0046] Since the pressure plate 333 is placed directly on the support spring and there is no structural connection between it and the bottom frame 310, in order to improve the stability of the pressure plate 333, in this embodiment, a second magnetic block 337 is connected to the pressure plate 333. The second magnetic block 337 can generate a magnetic attraction between the support spring and the top edge, which can stably position the upper positioning part 330, thereby reducing the slippage of the upper positioning part 330 when placed on the support spring, and thus improving the relative fixing effect between the top edge and the top side of the support spring. There can be multiple second magnets, which are arranged at intervals on the bottom side of the pressure plate 333 to improve the magnetic attraction between the pressure plate 333 and the support spring. The second magnets can also be detached from the pressure plate 333 by screwing them through and connecting them to the pressure plate 333, thereby pressing and fixing the second magnets to the pressure plate 333. The second magnets can be removed during maintenance. A second magnet can also be added to the side of the two limiting plates 334 that are facing each other to further improve the overall magnetic attraction.

[0047] For edge-fastening mechanisms, such as Figure 3As shown, in this embodiment, the fastening mechanism includes a driving assembly, which includes a guide plate 220, a linear drive 230, and a guide seat 240. The guide seat 240 is slidably connected to the guide plate 220, and the linear drive 230 is connected between the guide seat 240 and the guide plate 220. The linear drive 230 can drive the guide seat 240 to move along the length direction of the guide plate 220. The clamping gun 210 is connected to the guide seat 240. There are four driving assemblies. The guide plates 220 in two driving assemblies are connected to the frame 100 at intervals in the front-back direction. The guide plates 220 in the other two driving assemblies are connected to the two guide plates 220 located on the frame 100. Four drive components can drive four clamping guns 210 to move horizontally. Specifically, two guide plates 220 spaced apart along the front-back direction are connected to the frame 100. Linear drives 230 on the two guide plates 220 provide driving force to the guide seats 240 in the left-right direction, which can drive the two guide seats 240 to move in the left-right direction, thereby driving the two clamping guns 210 to clamp the edges and the front and rear sides of the support spring at intervals. The two guide plates 220 spaced apart along the left-right direction are connected to the two guide plates 220 located on the frame 100. That is, the front and rear ends of the two guide plates 220 extending in the front-back direction are respectively placed on the left and right ends of the two guide plates 220 extending in the left-right direction. The two guide plates 220 extending in the front-back direction also have two linear drives 230, which can drive the two guide seats 240 to move in the front-back direction, thereby driving the two clamping guns 210 to clamp the edges and the support spring at intervals. In this way, the edge and support spring can be automatically fastened together.

[0048] In practical applications, the clamping gun 210 and the guide seat 240 are also connected by an up-down drive, which can drive the clamping gun 210 to adjust its height up and down.

[0049] The linear drive 230, up-down drive, and lifting drive 430 are mainly used to provide driving force for movement in a linear direction. They have various structural forms, such as electric push rods, pneumatic push rods, or hydraulic push rods. For the linear drive 230, a motor can also be used to drive a gear and rack meshing transmission. Specifically, the motor is connected to the guide seat 240 and drives the connecting gear, while the rack extends in the left-right direction and is connected to the guide plate 220. The gear and rack mesh with each other. By driving the gear to rotate forward and backward by the motor, the guide seat 240 can be moved in the left-right direction on the guide plate 220.

[0050] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An automatic edge trimming frame machine characterized by: include: Rack (100); An edge-fastening mechanism is provided on the frame (100). The edge-fastening mechanism has multiple movable clamping guns (210), and the translational trajectories of the multiple clamping guns (210) form an edge-fastening area. A positioning fixture (300) is provided on the frame (100), and a moving mechanism is provided on the frame. The positioning fixture (300) is connected to the moving mechanism. The moving mechanism can drive the positioning fixture (300) into or out of the fastening area. The moving mechanism includes a sliding part and a lifting part. The sliding part includes a slide (410) and a translation drive (420). The lifting part includes a lifting drive (430) and a lifting frame (440). The slide (410) is slidably connected to the frame (100). The translation drive (420) is connected between the frame (100) and the carriage (410), and the translation drive (420) can drive the carriage (410) to move in the left and right direction. The lifting drive (430) is connected between the lifting frame (440) and the carriage (410), and the lifting drive (430) can drive the lifting frame (440) to move in the up and down direction. The positioning fixture (300) is connected to the lifting frame (440), and the positioning fixture (300) includes: Bottom frame (310); The lower positioning part (320) is connected to one side of the bottom frame (310). The top side of the lower positioning part (320) is provided with a positioning straight groove (321) and a spring coil positioning groove (322). The positioning straight groove (321) is located on the side away from the center of the bottom frame (310) relative to the spring coil positioning groove (322). Multiple lower positioning parts (320) are arranged around the center of the bottom frame (310) on the outside of the bottom frame (310). An upper positioning part (330) is located above the lower positioning part (320). The bottom side of the upper positioning part (330) is provided with a limiting straight groove (331) and a spring coil limiting groove (332). The limiting straight groove (331) is located away from the center of the bottom frame (310) relative to the spring coil limiting groove (332). Multiple lower positioning parts (320) are arranged around the center of the bottom frame (310). The fastening mechanism includes a driving assembly, which includes a guide plate (220), a linear drive (230), and a guide seat (240). The guide seat (240) is slidably connected to the guide plate. On the guide plate (220), the linear drive (230) is connected between the guide seat (240) and the guide plate (220). The linear drive (230) can drive the guide seat (240) to move along the length direction of the guide plate (220). The guide seat (240) is connected to the clamping gun (210). There are four drive components. The guide plates (220) in two drive components are connected to the frame (100) at intervals along the front-back direction. The guide plates (220) in the other two drive components are connected to the two guide plates (220) located on the frame (100).

2. The automatic hemming frame machine according to claim 1, characterized in that: The lifting unit also includes a scissor lift assembly (451), a drive motor (452), and a transmission shaft (453). The transmission shaft (453) is rotatably connected to the slide (410). The rotation axis of the transmission shaft (453) extends in the left-right direction. The drive motor (452) drives the transmission shaft (453). The scissor lift assembly (451) has a fixed end (4511) and a sliding end (4512) on both the upper and lower sides. The fixed end (4511) and the sliding end (4512) on the upper side are both connected to the lifting frame (440). The fixed end (4511) and the sliding end (4512) on the lower side are connected to the slide (410). The sliding end (4512) on the lower side is connected to a slide block (454). The transmission shaft (453) is threadedly connected to the slide block (454).

3. The automatic edge-fastening machine according to claim 2, characterized in that: The drive shaft (453) is synchronously connected to a sprocket (461). At least two drive shafts (453) are spaced apart in the front-rear direction. Each drive shaft (453) is connected to two scissor lift assemblies (451) through two slides (454). A chain (462) is connected between any two adjacent sprockets (461).

4. The automatic edge-fastening machine according to claim 1, characterized in that: The top side of the frame (100) is connected to a guide post (471) extending in the left-right direction, and the bottom side of the carriage (410) is connected to a main guide wheel (472) and a side guide wheel (473). The outer side of the main guide wheel (472) abuts against the top side of the guide post (471), and the outer sides of the two side guide wheels (473) abut against the front and rear sides of the guide post (471) respectively.

5. The automatic edge-fastening machine according to claim 1, characterized in that: The lifting unit is provided in at least two intervals along the left and right direction.

6. The automatic edge-fastening machine according to claim 1, characterized in that: The lower positioning part (320) includes a connecting plate (323), a spring column (324), a support plate (325), and a positioning plate (326). The connecting plate (323) is connected to the bottom frame (310). The bottom end of the spring column (324) is connected to the connecting plate (323), and the top end of the spring column (324) is connected to the support plate (325). The positioning plate (326) is disposed on the top side of the support plate (325). The positioning straight groove (321) and the spring ring positioning groove (322) are both disposed on the positioning plate (326).

7. The automatic edge-fastening machine according to claim 1, characterized in that: The upper positioning part (330) includes a pressure plate (333) and a limiting plate (334). The limiting plate (334) is connected to the bottom side of the pressure plate (333). The limiting straight groove (331) and the spring coil limiting groove (332) are both provided on the limiting plate (334). There are two limiting plates (334) arranged at intervals along the length direction of their opposite side to the bottom frame (310). The spring coil limiting grooves (332) in the two limiting plates (334) are inclined towards the bottom frame (310) in a direction away from each other.

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