Sewing device for filter bag with positioning structure

Abstract

The invention relates to the technical field of filter bag processing, and particularly discloses a filter bag sewing device with a positioning structure, the filter bag sewing device comprises a box seat, the box seat is provided with an opening expanding ring assembling mechanism, a rotary sewing mechanism and an inner flanging mechanism, the opening expanding ring assembling mechanism comprises a lifting seat which moves up and down and extends out of the upper end of the box seat, and the lifting seat is provided with a positioning mechanism; the lower end of the lifting seat is connected with a pressing rod capable of moving up and down through a second air cylinder, fixing rods are arranged on the two sides, located above the pressing rod, of the lifting seat, the inner flanging mechanism comprises a movable seat movably arranged along the upper surface of the box seat, and a plurality of flanging fan-shaped blocks are arranged on the side, close to the expanding ring assembling mechanism, of the movable seat in an annular array shape; according to the sewing device disclosed by the invention, the opening expanding ring assembling mechanism, the rotary sewing mechanism and the inner flanging mechanism are matched, so that the three processing steps of ring mounting, flanging and sewing of the filter bag opening positioning structure are realized, semi-automatic processing treatment is realized, the operation difficulty is reduced, and the production efficiency is improved. And the sewing processing efficiency of the positioning structure and the filter bag is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of filter bag processing, and in particular discloses a sewing device for a filter bag with a positioning structure. Background Art

[0002] In the manufacturing process of filter bags, in order to facilitate the fitting with the bag cage during installation, it is usually necessary to install an expansion ring at the bag mouth of the filter bag as a positioning structure. The connection and sewing of the existing filter bag positioning structure is mainly done manually. During the operation, the expansion ring is first manually installed into the bag mouth of the filter bag, and then the bag mouth of the filter bag is turned inward so that the expansion ring is wrapped by the inner and outer layers of filter cloth, and then it is sent to the sewing machine for rotation and sewing of the overlapping parts. The connection and sewing process of the above-mentioned entire expansion ring has many operating steps and is difficult to operate, resulting in low efficiency of the connection and sewing of the filter bag positioning structure.

[0003] The utility model patent with application number 2021216562112 discloses a filter bag mouth-turning machine, including a bracket body, an upper panel, an adjusting cylinder, a mounting plate and a positioning cylinder, the upper panel is fixedly mounted on the upper end of the bracket body, a median movable groove and an edge adjusting groove are provided on the upper panel, a median mounting plate and an edge mounting plate are fixedly mounted on the lower cross beam of the bracket body, the adjusting cylinder is fixedly mounted on the median mounting plate, the mounting plate is fixedly mounted on the cylinder rod of the adjusting cylinder through a connecting piece, and a mounting groove is provided on the mounting plate; the filter bag mouth-turning machine is composed of a bracket body, an upper panel, an adjusting cylinder, a mounting plate and a positioning cylinder. Although the filter bag mouth-turning machine disclosed in the patent can conveniently load the expansion ring into the bag mouth of the filter bag, it is still necessary to manually flanging the bag mouth of the filter bag after the expansion ring is loaded, and manual sewing is required after the flanging is completed, and the rapid connection and suturing of the positioning structure in the filter bag cannot be effectively realized. Therefore, in order to address the shortcomings of the existing production and preparation process of filter bags with positioning structures, such as many operating steps, great operational difficulty and basic reliance on manual operation, resulting in low production efficiency, the present application proposes a sewing device for filter bags with positioning structures that integrates automatic ring installation, flanging and sewing, so as to achieve efficient production of filter bags. Summary of the invention

[0004] The present invention aims to provide a sewing device for a filter bag with a positioning structure which integrates automatic ring installation, flanging and sewing, so as to solve the problem that the existing filter bags with a positioning structure require manual operation during sewing preparation, resulting in difficulty in operation and insufficient production efficiency.

[0005] The present invention is achieved through the following technical solutions: A suturing device for filter bags with a positioning structure, comprising a box seat, on which an expansion ring assembly mechanism, a rotating suturing mechanism and an inner flanging mechanism are arranged, the expansion ring assembly mechanism comprises a pushing device arranged inside the box seat and a pushing seat connected to the pushing device, the pushing seat is connected to a lifting seat arranged on the upper end of the box seat and moving up and down through a first cylinder, the lower end of the lifting seat is connected to a pressure rod moving up and down through a second cylinder, and fixing rods are arranged on both sides of the lifting seat above the pressure rod; The rotary sewing mechanism comprises a gantry located directly above the lifting seat, a sewing machine head located above the inner flanging mechanism is arranged in the gantry, wheel seats that move close to each other are arranged at both ends of the gantry, an extrusion wheel is rotatably connected to the upper end of each wheel seat, and a driving motor is connected to the end of the extrusion wheel; The inner flanging mechanism includes a moving seat that is movably arranged along the upper surface of the box seat, and the box seat is provided with a fifth cylinder that pushes the moving seat toward one side of the expanding ring assembly mechanism. The moving seat is provided with a plurality of flanging fan-shaped blocks in a circular array on one side close to the expanding ring assembly mechanism, and the moving seat is provided with a transmission mechanism that realizes the synchronous expansion or contraction of the plurality of flanging fan-shaped blocks.

[0006] As a further arrangement of the above scheme, a vertical side plate is fixed to one end of the movable seat close to the expansion ring assembly mechanism, and a plurality of radial slots are evenly opened circumferentially on the vertical side plate. A limiting slider that acts on the radial slots is provided at the end of the flanged fan-shaped block, and a convex column is connected to the end of the limiting slider. The transmission mechanism includes a rotating motor fixed to the other end of the movable seat, and a turntable is connected to the motor shaft of the rotating motor, and the turntable is provided with oblique slots corresponding to each radial slot and acting on the convex column.

[0007] As a further arrangement of the above scheme, one end of the flanged fan-shaped block close to the expansion ring assembly mechanism is in the form of an inclined cone surface, the other end is in the form of an arc surface, and a groove is provided in the middle. After shrinking, the multiple flanged fan-shaped blocks have a structure of a truncated cone block plus a cylindrical block, and the multiple grooves form an annular groove.

[0008] As a further configuration of the above scheme, a vertically arranged first slide rail is installed on the pushing seat, the lifting seat is slidably arranged along the first slide rail, a vertically arranged second slide rail is arranged on the lifting seat, a movable block connected to the second cylinder is arranged on the second slide rail, and the pressure rod is fixedly arranged on the movable block.

[0009] According to the suturing device of the filter bag with a positioning structure as described in claim 1, it is characterized in that third slide rails slidably matched with the wheel seat are provided at both ends of the upper surface of the box seat located on the inner side of the gantry, and fourth cylinders connected to the corresponding wheel seats are provided at both side ends of the gantry.

[0010] As a further configuration of the above scheme, the upper surface of the box seat is provided with a fourth slide rail which is slidably matched with the movable seat, and the fifth cylinder is fixed to one end of the upper surface of the box seat and connected to the movable seat.

[0011] As a further configuration of the above solution, a third cylinder is arranged on the top of the gantry, and the lower end of the third cylinder is connected to the sewing machine head.

[0012] When the suturing device disclosed in the present invention sews a filter bag with an expansion ring as a positioning structure, the expansion ring is first placed between two fixed rods and a pressure rod of the expansion ring assembly mechanism, and then the lower end of the expansion ring is deformed upward and inwardly through the action of the pressure rod, so that it is convenient for the operator to put the bag opening of the filter bag on the outside. After the filter bag is put on, the force of the pressure rod is withdrawn, so that the expansion ring is restored to a circle under the action of the elastic restoring force and the bag opening of the filter bag is expanded to a circle.

[0013] Then, the extrusion wheels on both sides of the rotating stitching mechanism clamp and fix the expansion ring, and then withdraw the expansion ring assembly mechanism after fixing. Then, push the inner flanging mechanism toward the expansion ring so that the edge material of the filter bag mouth is located in the inner circle surrounded by multiple flanging fan-shaped blocks, and then control all the flanging fan-shaped blocks to gather toward the center synchronously, so as to compress the filter bag edge material extending out of the expansion ring toward the center, and then push the inner flanging mechanism toward the expansion ring after compression, so that multiple flanging fan-shaped blocks move into the expansion ring, and in the process of entering the inner circle of the expansion ring, the bag mouth edge material of the filter bag will be pushed into the expansion ring together, so that the bag mouth edge material and the outer layer material will fold and wrap the expansion ring.

[0014] Finally, start the sewing machine head and push it downward so that the needle head of the sewing machine head is aligned with the groove after the bag opening is folded, and then start the sewing machine head and the rotating motor so that sewing can be achieved through the sewing machine head during the rotation of the bag opening and the expansion ring. After sewing is completed, the filter bag can be removed. Beneficial Effects

[0015] The suturing device disclosed in the present invention adopts the cooperation between the expansion ring assembly mechanism, the rotary suturing mechanism and the inner flanging mechanism to realize the three processing steps of ring installation, flanging and suturing of the bag mouth positioning structure of the filter bag. During the operation, the operator only needs to load the positioning structure and the filter bag, which greatly reduces the operation difficulty, realizes semi-automatic processing, and effectively improves the suturing processing efficiency of the positioning structure and the filter bag.

[0016] The expansion ring assembly mechanism of the present invention utilizes the elastic deformation characteristics of the expansion ring to bend its lower end inward before inserting the filter bag, so that the area of ​​the expansion ring is smaller than the bag opening of the filter bag, thereby facilitating the insertion of the filter bag. After the filter bag is inserted, its elastic restoring force can be used to automatically open the bag opening, so that the bag opening of the filter bag is circular, which is convenient for subsequent rotation and sewing processing.

[0017] The inner flanging mechanism in the present invention is cleverly designed in structure, which first utilizes the gathering and contraction of multiple flanging fan-shaped blocks to compress the bag edge material in the middle, and then pushes it into the expansion ring, which not only replaces the manual flanging of the bag mouth, but also ensures that the bag mouth flanging is uniform, thereby ensuring the subsequent sewing effect between the filter bag and the expansion ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from a first angle; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a second angle; Figure 3 It is a schematic diagram of the main plane structure inside the box seat of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the rotary suturing mechanism in the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the expansion ring assembly mechanism in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the inner flanging mechanism in the present invention; Figure 7 It is a schematic diagram of the first state when the inner flanging mechanism of the present invention is in action; Figure 8 It is a schematic diagram of the second state when the inner flanging mechanism of the present invention is in action. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 8 , and describes the application in detail with reference to embodiments. Example 1

[0022] Embodiment 1 discloses a sewing device with a filter bag having a positioning structure, Figures 1 to 3 The main body of the device includes a box seat 1, a control box 5 is arranged beside the box seat 1, and then an expansion ring assembly mechanism 2, an inner flanging mechanism 3 and a rotary sewing mechanism 4 are arranged on the upper surface of the box seat 1. A through opening is opened on the upper surface of the box seat 1, and the expansion ring assembly mechanism 2 is arranged in the through opening for vertical movement, and the rotary sewing mechanism 4 is arranged directly above the expansion ring assembly mechanism 2, and finally the inner flanging mechanism 3 is arranged on the upper surface of the box seat 1 behind the expansion ring assembly mechanism 2.

[0023] Reference Figure 3 and attached Figure 5 The expansion ring assembly mechanism 2 includes a push device 201 and a push seat 202. The push device 201 is fixed inside the box seat 1 and its movable end is connected to the push seat 202, so that the push seat 202 can move forward and backward under the action of the push device 201. A vertically arranged first slide rail is installed on the push seat 202, and then a lifting seat 203 is slidably arranged on the first slide rail, and a first cylinder 204 for driving it to move up and down is arranged below the lifting seat 201. A second cylinder 205 is arranged at the lower end of the lifting seat 201, and a movable block 206 is connected to the upper end of the second cylinder 205. Similarly, a second slide rail adapted to the movable block 206 is arranged on the side of the lifting seat 201, and then a pressure rod 207 arranged on the side away from the inner flanging mechanism 3 is connected to the movable block 206, and two symmetrically arranged fixed rods 208 are fixedly arranged on the side of the lifting seat 201 above the pressure rod 207. When assembling the expansion ring and the filter bag, the expansion ring 200 is placed between two fixing rods 208 and a pressure rod 207. The two fixing rods 208 are located on both sides of the inner ring of the expansion ring 200, and the pressure rod 207 is located directly below the bottom of the outer ring of the expansion ring 200. Then the second cylinder 205 is started to push the pressure rod 207 upward. Under the action of the pressure rod 207, the expansion ring 200 is concave upward due to its own elastic deformation. At this time, the bag mouth of the filter bag 100 can be easily and quickly put on its outer surface. Then, after the force of the pressure rod 207 is withdrawn, the expansion ring 200 can quickly return to a round shape, thereby opening the bag mouth.

[0024] Reference Figure 4The rotary sewing mechanism 4 includes a gantry 401 arranged across the top of the expansion ring assembly mechanism 2, and a sewing machine head 403 is connected to the top of the gantry 401 through a third cylinder 402. The specific sewing machine head 403 is a conventional technical means in the field and is not described here. A wheel seat 404 is slidably arranged at both the left and right ends of the gantry 401, and an extrusion wheel 405 is rotatably arranged at the upper end of the wheel seat 404, and a driving motor 406 is connected to one end of the extrusion wheel 405. A third slide rail 407 that slides with the two wheel seats 404 is provided on the upper surface of the box seat 1, and fourth cylinders 408 connected to the corresponding wheel seats 404 are provided on both side ends of the gantry 401, so that the two wheel seats 404 can be moved closer to each other under the joint extension action of the two fourth cylinders 408, and then the outer ring of the filter bag assembled with the expansion ring 200 is pressed and fixed by two extrusion wheels 405, and at the same time, the filter bag and the expansion ring 200 can be rotated and sutured under the active driving action of the extrusion wheel 405.

[0025] Reference Figure 2 and attached Figure 6 The inner flanging mechanism 3 includes a moving seat 301 arranged above the box seat 1, a fourth slide rail 302 is arranged on the upper surface of the box seat 1 below the moving seat 301, and the moving seat 301 is slidably set on the fourth slide rail 302, and then a fifth cylinder 303 is also arranged on the box seat 1 to push the moving seat 301 along the fourth slide rail 302 toward the expanding ring assembly mechanism 2.

[0026] A vertical side plate 304 is fixedly arranged at one end of the moving seat 301 near the expansion ring assembly mechanism 2, and a rotating motor 305 is fixedly arranged at the other end. A plurality of radial strips 306 are evenly arranged circumferentially on the vertical side plate 304, and the centers of the plurality of radial strips 306 are located on the central axis of the expansion ring 200. Flanged fan-shaped blocks 307 aligned with each radial strip 306 are evenly arranged circumferentially on the side surface of the vertical side plate 304 near the expansion ring assembly mechanism 2, and each flanged fan-shaped block 307 has an oblique cone surface at one end near the expansion ring assembly mechanism 2 and an arc surface at the other end, and a corresponding groove 3071 is opened in the middle. A limit slider 308 is arranged at the end of the flanged fan-shaped block 307 to act on the corresponding radial strip 306, and a protruding column 309 is arranged on the end surface of the limit slider 308. A turntable 310 is connected to the motor shaft of the rotating motor 305. The turntable 310 is provided with an oblique slot 311 corresponding to each radial slot 306, and the protrusion 309 on each flanged fan-shaped block 307 is extended into the oblique slot 311 to cooperate with it. The above-mentioned driving action of the rotating motor 305 causes the turntable 310 to rotate, and then under the action of the oblique slot 311 and the radial slot 306 on the flanged fan-shaped blocks 307, all the flanged fan-shaped blocks 307 can be synchronously contracted and moved toward the center. After contracting to the center, multiple flanged fan-shaped blocks 307 form a structure similar to a truncated cone block + a cylindrical block, and can be extended into the inner ring of the expansion ring 200. At the same time, an annular groove for inserting a sewing needle is formed between the truncated cone block and the cylindrical block.

[0027] The specific operation steps and working principle of the suturing device disclosed in this embodiment 1 are as follows: In the first step, the expansion ring 200 is installed between the pressure rod 207 and the fixing rod 208, and the two fixing rods 208 are located on both sides of the inner ring of the expansion ring 200, and the pressure rod 207 is located directly below the bottom of the outer ring of the expansion ring 200. Then the second cylinder 205 is started to push the pressure rod 207 upward, and the expansion ring 200 is concave upward under the action of the pressure rod 207. At this time, the outer ring area of ​​the entire expansion ring 200 becomes smaller, and the bag opening of the filter bag 100 can be quickly put on the outer periphery of the expansion ring 200.

[0028] The second step is to control the second cylinder 205 to retract it, and the expansion ring 200 returns to a circular shape under its own elasticity and expands the bag opening to a circular shape, and then start the two fourth cylinders 408 at the same time to make the two wheel seats 404 approach each other, and then use the two extrusion wheels 405 to press and fix the outer ring of the filter bag 100 assembled with the expansion ring 200, and after the filter bag 100 and the expansion ring 200 are clamped and fixed, the pushing seat 202 is pulled backwards by the pushing device 201, so that the pressure rod 207 and the fixing rod 208 are pulled out of the bag opening of the filter bag, and after being pulled out, the lifting seat 203 is pulled downward and recovered into the box seat 1 under the action of the first cylinder 204.

[0029] In the third step, the fifth cylinder 303 is started to move the movable seat 301 toward the expansion ring 200 and the bag opening of the filter bag 100 until the end of the flanged fan-shaped block 307 moves to the side close to the expansion ring 200. At this time, the end of the bag opening of the filter bag 100 is located in the inner circle enclosed by the plurality of flanged fan-shaped blocks 307 (see the attached figure). Figure 7 ). Then, the rotating motor 305 is started to rotate the turntable 310, and then the multiple flanged fan-shaped blocks 307 are brought together to the middle by the combined action of the oblique strip openings 311 and the radial strip openings 306, and the bag opening of the filter bag is pressed toward the central axis of the expansion ring 200 during the process of the flanged fan-shaped blocks 307 being brought together. When the multiple flanged fan-shaped blocks 307 are brought together to the center to the most central position, the multiple flanged fan-shaped blocks 307 form a structure similar to a truncated cone block + a cylindrical block. Finally, the fifth cylinder 303 is started to push the movable seat 301 toward the expansion ring 200, so that the multiple flanged fan-shaped blocks 307 move into the expansion ring 200, and when the flanged fan-shaped blocks 307 enter the inner ring of the expansion ring 200, the bag opening edge material of the filter bag 100 is pushed into the expansion ring 200 together, so that the bag opening edge material and the outer layer material fold and wrap the expansion ring 200 (refer to the attached Figure 8 ).

[0030] Step 4: Start the third air cylinder 402 to push the sewing machine head 403 downward so that the needle head of the sewing machine head 403 is aligned with the groove 3071 after the bag opening is folded (i.e. Figure 8 The bag opening and the expanding ring 200 are rotated by the driving motor 406 and the extruding wheel 405, and the sewing machine head 403 is used to sew the bag. After the sew is completed, the filter bag is removed. Finally, the expanding ring assembly mechanism 2, the inner flanging mechanism 3 and the rotary sewing mechanism 4 are all reset to wait for the processing of the next filter bag.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewing device for a filter bag with a positioning structure, comprising a box seat, characterized in that: The box seat is provided with an expansion ring assembly mechanism, a rotary sewing mechanism and an inner flanging mechanism, the expansion ring assembly mechanism comprises a pushing device arranged inside the box seat and a pushing seat connected to the pushing device, the pushing seat is connected to a lifting seat arranged at the upper end of the box seat and moving up and down through a first cylinder, the lower end of the lifting seat is connected to a pressure rod moving up and down through a second cylinder, and fixed rods are arranged on both sides of the lifting seat above the pressure rod; The rotary sewing mechanism comprises a gantry located directly above the lifting seat, a sewing machine head located above the inner flanging mechanism is arranged in the gantry, wheel seats that move close to each other are arranged at both ends of the gantry, an extrusion wheel is rotatably connected to the upper end of each wheel seat, and a driving motor is connected to the end of the extrusion wheel; The inner flanging mechanism includes a moving seat that is movably arranged along the upper surface of the box seat, and the box seat is provided with a fifth cylinder that pushes the moving seat toward one side of the expanding ring assembly mechanism. The moving seat is provided with a plurality of flanging fan-shaped blocks in a circular array on one side close to the expanding ring assembly mechanism, and the moving seat is provided with a transmission mechanism that realizes the synchronous expansion or contraction of the plurality of flanging fan-shaped blocks.

2. The sewing device of the filter bag with a positioning structure according to claim 1, characterized in that: A vertical side plate is fixed to one end of the movable seat close to the expansion ring assembly mechanism, and a plurality of radial slots are evenly opened on the vertical side plate in a circumferential direction. A limiting slider that acts on the radial slots is provided at the end of the flanged fan-shaped block, and a convex column is connected to the end of the limiting slider. The transmission mechanism includes a rotating motor fixed to the other end of the movable seat, and a turntable is connected to the motor shaft of the rotating motor, and the turntable is provided with oblique slots corresponding to each radial slot and acting on the convex column.

3. The sewing device of the filter bag with a positioning structure according to claim 2, characterized in that: The flanged fan-shaped block has an oblique cone surface at one end close to the expansion ring assembly mechanism and an arc surface at the other end, and a groove is opened in the middle. After shrinking, the multiple flanged fan-shaped blocks have a structure of a truncated cone block plus a cylindrical block, and the multiple grooves form an annular groove.

4. The sewing device of the filter bag with a positioning structure according to claim 1, characterized in that: The pushing seat is provided with a vertically arranged first slide rail, the lifting seat is slidably arranged along the first slide rail, the lifting seat is provided with a vertically arranged second slide rail, the second slide rail is provided with a movable block connected with the second cylinder, and the pressure rod is fixedly arranged on the movable block.

5. The sewing device of the filter bag with a positioning structure according to claim 1, characterized in that: Both ends of the upper surface of the box seat located inside the gantry are provided with third slide rails slidably matched with the wheel seats, and both side ends of the gantry are provided with fourth cylinders connected with the corresponding wheel seats.

6. The sewing device of the filter bag with a positioning structure according to claim 1, characterized in that: The upper surface of the box seat is provided with a fourth slide rail which is slidably matched with the moving seat. The fifth cylinder is fixed on one end of the upper surface of the box seat and is connected with the moving seat.

7. The sewing device of the filter bag with a positioning structure according to claim 1, characterized in that: A third cylinder is arranged on the top of the gantry, and the lower end of the third cylinder is connected to the sewing machine head.

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