Woven bag flanging mechanism

Abstract

The present invention discloses a woven bag flanging mechanism, wherein an upper suction port device and a lower suction port device are respectively arranged on the upper and lower sides of a woven bag conveying device, the woven bag conveying device drives the woven bag to move, and the upper suction port device and the lower suction port device open the bag mouth of the woven bag; the left support block device and the right support block device tighten the bag mouth edge; the left top block device and the right top block device form a 90-degree angle toward the middle with the edges of the woven bag mouth tightened on both sides, and cooperate with the left support block device and the right support block device to fold the woven bag 180 degrees, and the bag mouth of the woven bag is flanging as a whole under the tensioning action of the left top block device and the right top block device. Through the technical solution of the present invention, the efficiency of the woven bag flanging process is greatly improved, and no manual intervention is required, which reduces labor costs and greatly improves the stability of product quality.

Description

Technical Field

[0001] The invention relates to the technical field of woven packaging, and in particular to a woven bag flanging mechanism. Background Art

[0002] At present, due to the production process requirements, the traditional packaging woven bags basically need to be folded inside the bag mouth to increase the durability and consistency of the bag mouth. At present, they are basically opened manually, and then the inner folding of the bag mouth is completed manually. The consistency of the winding is also aligned by human eyes, and then the folded bag mouth is manually pressed; finally, the bag mouth is manually pressed and welded at the same time to complete the ultrasonic bag mouth welding. This process is completed by manual intervention throughout the process, which is very likely to cause uneven quality of the folded edge of the finished packaging woven bag, low yield, and low manual production capacity; secondly, during the welding process, manual feeding and manual clamping are required, which will have certain safety hazards; in addition, the operator's skill proficiency and mood have a great impact on the quality of the product, and the poor stability of product quality will also have a great impact on the economic benefits of the enterprise. Summary of the invention

[0003] In response to at least one of the above-mentioned problems, the present invention provides a woven bag flanging mechanism, which opens the bag mouth of the woven bag on the woven bag conveying device through an upper suction port device and a lower suction port device, and then tightens the bag mouth through a left support block device and a right support block device, and utilizes the mutual coordination movement between the left top block device and the right top block device and the left support block device and the right support block device to achieve a 180-degree folding of the bag mouth. It has a high degree of automation and accurate positioning, which greatly improves the efficiency of the woven bag flanging process, does not require manual intervention, reduces labor costs, and greatly improves the stability of product quality.

[0004] To achieve the above-mentioned objectives, the present invention provides a woven bag flanging mechanism, comprising: a woven bag conveying device, a woven bag suction port device, a left top block device, a left support block device, a right top block device and a right support block device; the woven bag suction port device comprises an upper suction port device and a lower suction port device, the upper suction port device and the lower suction port device are respectively arranged at the upper and lower sides of the woven bag conveying device, the woven bag conveying device drives the woven bag to move, the upper suction port device and the lower suction port device are respectively adsorbed on the upper bag opening edge and the lower bag opening edge of the woven bag, and move backwards under the drive of the cylinder to open the bag opening of the woven bag; the left support block device and the right support block device are arranged side by side on one side of the woven bag conveying device, and the left support block device and the right support block device are respectively moved toward the woven bag conveying device into the bag opening of the woven bag under the drive of the cylinder, and The left and right top block devices are respectively moved to the left and right sides under the drive of the cylinder to tighten the edge of the bag opening; the left top block device and the right top block device are arranged side by side on both sides of the left support block device and the right support block device, and the left top block device and the right top block device are respectively moved toward each other under the drive of the cylinder and respectively fold the edges of the woven bag opening tightened on both sides to the middle to form a 90-degree angle, and move toward the direction of the woven bag opening under the drive of the cylinder, the left top block device cooperates with the left support block device, and the right top block device cooperates with the right support block device to form a 180-degree fold on both sides of the woven bag, the left top block device and the right top block device are tensioned to both sides, and the left support block device and the right support block device are separated from the woven bag opening under the drive of the cylinder, so that the woven bag opening is flanging as a whole under the tensioning action of the left top block device and the right top block device.

[0005] In the above technical solution, preferably, the left support block device includes a left support block, a left support block longitudinal cylinder and a left support block transverse cylinder, the right support block device includes a right support block, a right support block longitudinal cylinder and a right support block transverse cylinder, the left top block device includes a left top block, a left top block longitudinal cylinder and a left top block transverse cylinder, the right top block device includes a right top block, a right top block longitudinal cylinder and a right top block transverse cylinder; the left support block is driven by the left support block longitudinal cylinder and the right support block is driven by the right support block longitudinal cylinder to move synchronously to the The woven bag is then pulled back and forth in a circle, and the left and right support blocks are moved in a circle to the inside of the woven bag opening, and the left and right support blocks are moved in a circle to the inside of the woven bag opening, and the left and right support blocks are moved in a circle to the inside of the woven bag opening, and the left and right support blocks are moved in a circle to the inside of the woven bag opening, and the left and right support blocks are moved in a circle to the inside of the woven bag opening, and the right ... The left top block is driven by the horizontal cylinder of the left top block and the right top block is driven by the horizontal cylinder of the right top block to move synchronously to the corresponding inner sides of the left support block and the right support block, driving the edges of the flange width on both sides of the woven bag to fold 90 degrees toward the middle; the left top block is driven by the longitudinal cylinder of the left top block and the right top block is driven by the longitudinal cylinder of the right top block to move synchronously toward the inner side of the bag opening of the woven bag, so that the left top block and the left support block will The left side opening of the woven bag is folded 180 degrees, and the right top block and the right support block fold the right side opening of the woven bag 180 degrees; the left top block is driven by the left top block transverse cylinder and the right top block is driven by the right top block transverse cylinder to move synchronously backwards to tighten the woven bag opening after being folded 180 degrees, and at the same time, the left support block is driven by the left support block longitudinal cylinder and the left support block transverse cylinder, and the right support block is driven by the right support block longitudinal cylinder and the right support block transverse cylinder to detach from the woven bag.

[0006] In the above technical scheme, preferably, the left support block is a hook-shaped structure extending obliquely to the left side, and the right support block is a hook-shaped structure extending obliquely to the right side. The left support block and the right support block are symmetrically arranged, and a groove is reserved in the middle of the front end of the hook of the left support block and the right support block; the left top block is a right-angled structure opening to the left side, and the right top block is a right-angled structure opening to the right side; the left top block and the right top block respectively pass through the grooves of the left support block and the right support block when the bag opening of the woven bag after being folded 180 degrees is tightened to both sides, so that the left support block and the right support block are detached from the woven bag when the left top block and the right top block tighten the bag opening of the woven bag.

[0007] In the above technical solution, preferably, rollers are respectively provided on the hooks on both sides of the slots on the left support block and the right support block, so that the rollers roll relative to the woven bag during the movement of the left support block and the right support block away from the woven bag.

[0008] In the above technical solution, preferably, the left support block device and the right support block device also include symmetrically arranged support block transverse linear guides, support block longitudinal linear guides and support block fixing plates, the left support block and the right support block are respectively fixed on the support block longitudinal linear guides on the corresponding sides, the support block longitudinal linear guides are installed on the support block fixing plates, the left support block longitudinal cylinder and the right support block longitudinal cylinder are respectively connected to the left support block and the right support block, and the left support block transverse cylinder and the right support block transverse cylinder are respectively connected to the support block fixing plates on the corresponding sides.

[0009] In the above technical solution, preferably, the left top block device and the right top block device also include symmetrically arranged top block transverse linear guide rails and top block mounting plates, the left top block and the right top block are respectively fixed on the left top block longitudinal cylinder and the right top block longitudinal cylinder, the left top block longitudinal cylinder and the right top block longitudinal cylinder are respectively fixed on the top block mounting plates on the corresponding sides, the left top block transverse cylinder and the right top block transverse cylinder are respectively connected to the top block mounting plates on the corresponding sides, and the top block mounting plates on both sides are respectively fixed on the top block transverse linear guide rails on the corresponding sides.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the bag mouth of the woven bag on the woven bag conveying device is opened by the upper suction port device and the lower suction port device, and then the bag mouth is tightened by the left support block device and the right support block device, and the 180-degree folding of the bag mouth of the woven bag is achieved by the mutual coordination movement between the left top block device and the right top block device and the left support block device and the right support block device, with a high degree of automation and accurate positioning, which greatly improves the efficiency of the woven bag flanging process, does not require manual intervention, reduces labor costs, and greatly improves the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the top view of a woven bag flanging mechanism disclosed in an embodiment of the present invention;

[0012] Figure 2 It is a schematic diagram of the main structure of a woven bag flanging mechanism disclosed in one embodiment of the present invention;

[0013] Figure 3 A schematic side structural diagram of a woven bag flanging mechanism disclosed in an embodiment of the present invention;

[0014] Figure 4The figure is a schematic diagram of the three-dimensional structure of a support block disclosed in one embodiment of the present invention.

[0015] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0016] 1. Woven bag conveying device, 2. Woven bag suction device, 21. Upper suction device, 211. Upper suction cylinder, 22. Lower suction device, 221. Lower suction cylinder, 31. Left top block device, 311. Left top block, 312. Left top block longitudinal cylinder, 313. Left top block transverse cylinder, 32. Right top block device, 321. Right top block, 322. Right top block longitudinal cylinder, 323. Right top block transverse cylinder, 33. Top Block transverse linear guide, 34. Top block mounting plate, 41. Left support block device, 411. Left support block, 412. Left support block longitudinal cylinder, 413. Left support block transverse cylinder, 42. Right support block device, 421. Right support block, 422. Right support block longitudinal cylinder, 423. Right support block transverse cylinder, 43. Slot, 44. Roller, 45. Support block transverse linear guide, 46. Support block longitudinal linear guide, 47. Support block fixing plate. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0019] like Figures 1 to 3As shown, a woven bag flanging mechanism provided according to the present invention includes: a woven bag conveying device 1, a woven bag suction port device 2, a left top block device 31, a left support block device 41, a right top block device 32 and a right support block device 42; the woven bag suction port device 2 includes an upper suction port device 21 and a lower suction port device 22, and the upper suction port device 21 and the lower suction port device 22 are respectively arranged on the upper and lower sides of the woven bag conveying device 1, and the woven bag conveying device 1 drives the woven bag to move, and the upper suction port device 21 and the lower suction port device 22 are respectively adsorbed on the upper bag mouth edge and the lower bag mouth edge of the woven bag, and move backwards under the drive of the cylinder to open the bag mouth of the woven bag; the left support block device 41 and the right support block device 42 are arranged side by side on one side of the woven bag conveying device 1, and the left support block device 41 and the right support block device 42 are respectively moved toward the woven bag conveying device 1 to the woven bag under the drive of the cylinder. The left top block device 31 and the right top block device 32 are arranged side by side on both sides of the left support block device 41 and the right support block device 42, and the left top block device 31 and the right top block device 32 are respectively driven by the cylinder to move toward each other and respectively fold the edges of the woven bag opening tightened on both sides to the middle by 90 degrees, and move toward the direction of the woven bag opening driven by the cylinder, the left top block device 31 cooperates with the left support block device 41, and the right top block device 32 cooperates with the right support block device 42 to form a 180-degree fold on both sides of the woven bag, the left top block device 31 and the right top block device 32 are tensioned to both sides, and the left support block device 41 and the right support block device 42 are separated from the woven bag opening under the drive of the cylinder, so that the woven bag opening is flanged as a whole under the tensioning action of the left top block device 31 and the right top block device 32.

[0020] In this embodiment, the bag mouth of the woven bag on the woven bag conveying device 1 is opened by the upper suction port device 21 and the lower suction port device 22, and then the bag mouth is tightened by the left support block device 41 and the right support block device 42, and the 180-degree folding of the bag mouth is achieved by the mutual coordination movement between the left top block device 31 and the right top block device 32 and the left support block device 41 and the right support block device 42. The high degree of automation and accurate positioning greatly improve the efficiency of the woven bag flanging process, and no manual intervention is required, which reduces labor costs and greatly improves the stability of product quality.

[0021] Specifically, the left top block device 31 and the right top block device 32 are symmetrically arranged, the left support block device 41 and the right support block device 42 are symmetrically arranged, the upper suction port device 21 moves up and down driven by the upper suction port cylinder, and the lower suction port device 22 moves up and down driven by the lower suction port cylinder. The woven bag conveying device 1 preferably adopts a belt conveying device, and stops when the woven bag is conveyed to the corresponding upper suction port device 21 and lower suction port device 22, and the upper suction port device 21 and the lower suction port device 22 move toward each other to the woven bag driven by the upper suction port cylinder and the lower suction port cylinder respectively, and the suction cups and other adsorption components of the upper suction port device 21 and the lower suction port device 22 are respectively adsorbed on the bag opening edges on the upper and lower sides of the woven bag to form negative pressure, and then the bag opening is opened by moving backwards for a preset distance driven by the upper suction port cylinder and the lower suction port cylinder.

[0022] At this time, the left support block device 41 and the right support block device 42 move to a preset distance inside the opening of the woven bag, and then move to the left and right sides, while the adsorption components of the upper suction port device 21 and the lower suction port device 22 stop adsorption, thereby tightening the opening of the woven bag to the height of the left support block device 41 and the right support block device 42. The reserved preset distance is the edge length of the woven bag opening to be folded over. The left top block device 31 and the right top block device 32 move toward each other from both sides to the middle along the edges of the left support block device 41 and the right support block device 42, thereby folding the edge length reserved for the woven bag opening 90 degrees, and the left top block device 31 and the right top block device 32 then move toward the inner side of the woven bag opening, thereby folding the woven bag opening that has been folded 90 degrees again 90 degrees, and then the left top block device 31 and the right top block device 32 are tightened to both sides, and the left support block device 41 and the right support block device 42 are withdrawn from the woven bag opening, so that the woven bag opening is completely folded to 180 degrees under the tightening of the left top block device 31 and the right top block device 32, completing the woven bag flanging process.

[0023] In the above embodiment, preferably, the left support block device 41 includes a left support block 411, a left support block longitudinal cylinder 412 and a left support block transverse cylinder 413, the right support block device 42 includes a right support block 421, a right support block longitudinal cylinder 422 and a right support block transverse cylinder 423, the left top block device 31 includes a left top block 311, a left top block longitudinal cylinder 312 and a left top block transverse cylinder 313, the right top block device 32 includes a right top block 321, a right top block longitudinal cylinder 322 and a right top block transverse cylinder 323; the left support block 411 is driven by the left support block longitudinal cylinder 412, and the right support block 421 is driven by the left support block longitudinal cylinder 412. Driven by the longitudinal cylinder 422 of the right support block, 421 moves synchronously toward the bag opening of the woven bag until it is inside the opened bag opening. Driven by the transverse cylinder 413 of the left support block, the left support block 411 and the right support block 421 move synchronously backward to the two ends of the inner side of the bag opening of the woven bag to tighten the bag opening of the woven bag. At the same time, the upper suction device 21 and the lower suction device 22 release the woven bag. The left support block 411 and the right support block 421 are both reserved with a flange width at the tightening position of the woven bag; driven by the longitudinal cylinder 312 of the left support block, the right support block 321 moves synchronously to the inner side of the bag opening of the woven bag under the drive of the transverse cylinder 413 of the left support block, and the right support block 321 moves synchronously to the inner side of the bag opening of the woven bag under the drive of the transverse cylinder 423 of the right support block. Driven by the longitudinal cylinder 322, the left top block 311 and the right top block 321 move synchronously to the position aligned with the flange width of the woven bag under the drive of the left top block transverse cylinder 313 and the right top block 321 move synchronously to the inner sides of the corresponding left support block 411 and right support block 421 under the drive of the right top block transverse cylinder 323, driving the flange width edges on both sides of the woven bag to fold 90 degrees toward the middle; the left top block 311 and the right top block 321 move synchronously toward the inner side of the bag opening of the woven bag under the drive of the left top block longitudinal cylinder 312 and the right top block 321 under the drive of the right top block longitudinal cylinder 322, so that the left top block 311 and the left support block 411 will The left side of the woven bag is folded 180 degrees, and the right top block 321 and the right support block 421 fold the right side of the woven bag by 180 degrees; the left top block 311 is driven by the left top block transverse cylinder 313, and the right top block 321 is driven by the right top block transverse cylinder 323 to move synchronously backward to tighten the woven bag mouth after folding 180 degrees. At the same time, the left support block 411 is driven by the left support block longitudinal cylinder 412 and the left support block transverse cylinder 413, and the right support block 421 is driven by the right support block longitudinal cylinder 422 and the right support block transverse cylinder 423 to detach from the woven bag, completing the flanging process of the woven bag. After the flanging action of the woven bag is completed, the left and right top blocks continue to maintain a certain tension to facilitate the welding or hot stamping process of the next double-layer bag mouth.

[0024] like Figure 4As shown, in the above embodiment, preferably, the left support block 411 is a hook-shaped structure extending obliquely to the left side, and the right support block 421 is a hook-shaped structure extending obliquely to the right side. The left support block 411 and the right support block 421 are symmetrically arranged, and a slot 43 is reserved in the middle of the front end of the hook of the left support block 411 and the right support block 421; the left top block 311 is a right-angled structure opening to the left side, and the right top block 321 is a right-angled structure opening to the right side; the left top block 311 and the right top block 321 respectively pass through the slots 43 of the left support block 411 and the right support block 421 when the bag opening of the woven bag after being folded 180 degrees is tightened to both sides, so that the left support block 411 and the right support block 421 are separated from the woven bag when the left top block 311 and the right top block 321 tighten the bag opening of the woven bag.

[0025] In the above embodiment, preferably, rollers 44 are respectively provided on the hooks on both sides of the slots 43 on the left support block 411 and the right support block 421, so that the rollers 44 roll relative to the woven bag during the movement of the left support block 411 and the right support block 421 away from the woven bag, ensuring that there is no obstruction when the woven bag is pulled out and the woven bag will not be damaged.

[0026] In the above embodiment, preferably, the left support block device 41 and the right support block device 42 also include symmetrically arranged support block transverse linear guides 45, support block longitudinal linear guides 46 and support block fixing plates 47, the left support block 411 and the right support block 421 are respectively fixed on the support block longitudinal linear guides 46 on the corresponding sides, the support block longitudinal linear guides 46 are installed on the support block fixing plates 47, the left support block longitudinal cylinders 412 and the right support block longitudinal cylinders 422 are respectively connected to the left support block 411 and the right support block 421, the left support block transverse cylinders 413 and the right support block transverse cylinders 423 are respectively connected to the support block fixing plates 47 on the corresponding sides, so that the left support block device 41 and the right support block device 42 move according to the linear guides during the movement, thereby ensuring the stability of the movement, thereby completing the flanging of the bag mouth of the woven bag smoothly.

[0027] In the above embodiment, preferably, the left top block device 31 and the right top block device 32 also include symmetrically arranged top block transverse linear guide rails 33 and top block mounting plates 34, the left top block 311 and the right top block 321 are respectively fixed on the left top block longitudinal cylinder 312 and the right top block longitudinal cylinder 322, the left top block longitudinal cylinder 312 and the right top block longitudinal cylinder 322 are respectively fixed on the top block mounting plates 34 on the corresponding sides, the left top block transverse cylinder 313 and the right top block transverse cylinder 323 are respectively connected to the top block mounting plates 34 on the corresponding sides, and the top block mounting plates 34 on both sides are respectively fixed on the top block transverse linear guide rails 33 on the corresponding sides, so that the left top block device 31 and the right top block device 32 move according to the linear guide rails during the movement process, thereby ensuring the stability of the movement, thereby successfully completing the flanging of the woven bag mouth.

[0028] In the above embodiment, the movement distances of the left support block 411, the right support block 421, the left top block 311 and the right top block 321 are determined according to the telescopic distances of the corresponding cylinders, or position sensors are set at the preset stroke end points to control the corresponding cylinders to stop running when reaching the end points, thereby accurately controlling the stroke distance. This movement distance control method belongs to the prior art in the field, and those skilled in the art select a specific distance control method during implementation, which will not be described in detail here.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A woven bag flanging mechanism, characterized in that: include: Woven bag conveying device, woven bag suction device, left top block device, left support block device, right top block device and right support block device; The woven bag suction port device comprises an upper suction port device and a lower suction port device, the upper suction port device and the lower suction port device are respectively arranged on the upper and lower sides of the woven bag conveying device, the woven bag conveying device drives the woven bag to move, the upper suction port device and the lower suction port device are respectively adsorbed on the upper bag opening edge and the lower bag opening edge of the woven bag, and move in reverse under the drive of the cylinder to open the bag opening of the woven bag; The left support block device and the right support block device are arranged side by side on one side of the woven bag conveying device, and the left support block device and the right support block device are respectively moved toward the woven bag conveying device into the bag opening under the drive of the cylinder, and are respectively moved to the left and right sides under the drive of the cylinder to tighten the edge of the bag opening; The left top block device and the right top block device are arranged side by side on both sides of the left support block device and the right support block device, and the left top block device and the right top block device move toward each other under the drive of the cylinder and respectively fold the edges of the woven bag opening tightened on both sides to the middle by 90 degrees, and move toward the direction of the woven bag opening under the drive of the cylinder, the left top block device cooperates with the left support block device, and the right top block device cooperates with the right support block device to form a 180-degree fold on both sides of the woven bag, the left top block device and the right top block device are tensioned to both sides, and the left support block device and the right support block device are separated from the woven bag opening under the drive of the cylinder, so that the woven bag opening is flanging as a whole under the tensioning action of the left top block device and the right top block device.

2. The woven bag flanging mechanism according to claim 1, characterized in that: The left support block device includes a left support block, a left support block longitudinal cylinder and a left support block transverse cylinder; the right support block device includes a right support block, a right support block longitudinal cylinder and a right support block transverse cylinder; the left top block device includes a left top block, a left top block longitudinal cylinder and a left top block transverse cylinder; the right top block device includes a right top block, a right top block longitudinal cylinder and a right top block transverse cylinder; The left support block is driven by the longitudinal cylinder of the left support block and the right support block is driven by the longitudinal cylinder of the right support block and moves synchronously toward the bag opening of the woven bag until it enters the opened bag opening of the woven bag. The left support block is driven by the transverse cylinder of the left support block and the right support block is driven by the transverse cylinder of the right support block and moves synchronously backward to the two ends of the inner side of the bag opening of the woven bag to tighten the bag opening of the woven bag. At the same time, the upper suction port device and the lower suction port device release the woven bag. A flanging width is reserved at the places where the left support block and the right support block are tightened with the woven bag. The left top block is driven by the longitudinal cylinder of the left top block and the right top block is driven by the longitudinal cylinder of the right top block to move synchronously to the position aligned with the flange width of the woven bag. The left top block is driven by the transverse cylinder of the left top block and the right top block is driven by the transverse cylinder of the right top block to move synchronously to the inner sides of the corresponding left support block and the right support block, driving the flange width edges on both sides of the woven bag to fold 90 degrees toward the middle. The left top block is driven by the longitudinal cylinder of the left top block, and the right top block is driven by the longitudinal cylinder of the right top block to move synchronously toward the inner side of the bag opening of the woven bag, so that the left top block and the left support block fold the left bag opening of the woven bag by 180 degrees, and the right top block and the right support block fold the right bag opening of the woven bag by 180 degrees; The left top block is driven by the transverse cylinder of the left top block and the right top block is driven by the transverse cylinder of the right top block to move synchronously backwards to tighten the mouth of the woven bag after being folded 180 degrees. At the same time, the left support block is driven by the longitudinal cylinder of the left support block and the transverse cylinder of the left support block and the right support block is driven by the longitudinal cylinder of the right support block and the transverse cylinder of the right support block to detach from the woven bag.

3. The woven bag flanging mechanism according to claim 2, characterized in that: The left support block is a hook-shaped structure extending obliquely to the left, and the right support block is a hook-shaped structure extending obliquely to the right. The left support block and the right support block are symmetrically arranged, and a groove is reserved in the middle of the front end of the hook of the left support block and the right support block; The left top block is a right-angled structure with an opening to the left, and the right top block is a right-angled structure with an opening to the right; The left top block and the right top block respectively pass through the slots of the left support block and the right support block when the opening of the woven bag is tightened to both sides after being folded 180 degrees, so that the left support block and the right support block are separated from the woven bag when the left top block and the right top block tighten the opening of the woven bag.

4. The woven bag flanging mechanism according to claim 3, characterized in that: Rollers are respectively arranged on the hooks on both sides of the slots on the left support block and the right support block, so that the rollers roll relative to the woven bag during the movement of the left support block and the right support block to separate from the woven bag.

5. The woven bag flanging mechanism according to claim 2, characterized in that: The left support block device and the right support block device also include symmetrically arranged support block transverse linear guides, support block longitudinal linear guides and support block fixing plates. The left support block and the right support block are respectively fixed on the support block longitudinal linear guides on the corresponding sides, and the longitudinal linear guides are installed on the support block fixing plates. The left support block longitudinal cylinder and the right support block longitudinal cylinder are respectively connected to the left support block and the right support block, and the left support block transverse cylinder and the right support block transverse cylinder are respectively connected to the support block fixing plates on the corresponding sides.

6. The woven bag flanging mechanism according to claim 2, characterized in that: The left top block device and the right top block device also include symmetrically arranged top block transverse linear guides, top block longitudinal linear guides and top block mounting plates, the left top block and the right top block are respectively fixed to the left top block longitudinal cylinder and the right top block longitudinal cylinder, the left top block longitudinal cylinder and the right top block longitudinal cylinder are respectively fixed to the top block mounting plates on the corresponding sides, the left top block transverse cylinder and the right top block transverse cylinder are respectively connected to the top block mounting plates on the corresponding sides, and the top block mounting plates on both sides are respectively fixed to the top block transverse linear guides on the corresponding sides.

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