A welding and forming device for producing tear-resistant non-woven packaging bags

Abstract

The present invention relates to the technical field of packaging bag processing, specifically to a tear-resistant non-woven packaging bag production welding and forming device, comprising an aluminum profile frame and a welding assembly. Through the friction between the front and rear stretching wheels in the welding assembly and the surface of the non-woven packaging bag, the non-woven packaging bag is stretched forward and backward during the reverse rotation, eliminating the front and rear wrinkles of the non-woven packaging bag, and the reversing circular sleeve also drives the path groove to rotate together, so that under the sliding connection between the positioning pin and the path groove, the reversing circular sleeve generates a force to slide along the axial direction of the light rod, and further pulls the stretching wheel to move together through the connection of the anti-tear spring, exerting a straightening effect in the up and down directions on the non-woven packaging bag, and then combined with the straightening effect on the front and rear directions of the non-woven packaging bag, the horizontal and longitudinal wrinkles of the non-woven packaging bag can be eliminated, and wrinkle weld scars can be avoided at the welding point. At the same time, the anti-tear spring can prevent the bag body of the non-woven packaging bag from being torn.

Description

Technical Field

[0001] The invention relates to the technical field of packaging bag processing, in particular to a production welding and forming device for tear-resistant non-woven packaging bags. Background Art

[0002] A non-woven bag is a portable bag made of non-woven fabric. Non-woven fabric is a textile made by interweaving, hot pressing or gluing fiber layers together. It has many advantages, such as durability, breathability and reusability. In the production process of non-woven bags, the cut bag material is folded first, and then the edges or joints of the non-woven material are fixed together by heat welding technology using a non-woven welding machine.

[0003] According to a Chinese patent with application publication number CN117162504A, an automatic welding device for non-woven handbags is disclosed. By using the design of a conveying mechanism, a positioning mechanism, a welding mechanism and a master control box, when welding the non-woven material, the master control box controls the driving member to rotate the conveyor belt to convey the non-woven material, so that the non-woven material close to the welding mechanism is displaced to the bottom of the industrial camera, and the first electric cylinder is controlled to move the fixed plate down along the guide column, so that the two L-shaped positioning plates are separated from each other. When the two detection components are not in contact with the handbag, the two L-shaped positioning plates press the non-woven material at one end in the vertical direction, and the joints on both sides of the handbag are welded by two welding components, which replaces the manual placement and positioning of the folded non-woven material by the staff, which is relatively simple and reduces the workload of the staff. However, the above-mentioned automatic welding device for non-woven handbags still has the following problems:

[0004] 1. The equipment only provides wrinkle removal effect on the left and right directions of non-woven handbags, and is insufficient for removing wrinkles in the front and back directions. If wrinkles appear in the front and back directions of woven handbags, welding will still be affected.

[0005] 2. The equipment lacks the buffering effect for wrinkle removal. If the wrinkles on the bag are small, after the two L-shaped positioning plates smooth out the bag, the two L-shaped positioning plates will continue to move, which may easily cause excessive stress on the bag and cause the bag to be torn.

[0006] To this end, we propose a tear-resistant non-woven packaging bag production welding and forming device to solve the above-mentioned technical problems. Summary of the invention

[0007] The present invention provides the following technical solution: a tear-resistant non-woven packaging bag production welding forming device, comprising an aluminum profile frame and a welding assembly, wherein the aluminum profile frame comprises an upper frame and a lower frame, wherein the lower frame is located at the bottom of the upper frame, and a welding assembly is arranged inside the upper frame;

[0008] The welding assembly includes two symmetrically distributed centering movable slot plates, and telescopic holes are provided at the four corners of the opposite surfaces of the two centering movable slot plates. A telescopic tube is slidably installed inside the telescopic hole, and the two ends of the telescopic holes located at the upper part and the two ends of the telescopic holes located at the lower part are both fixedly installed with sheet metal slot tiles, and two front-and-rear distributed light rods are fixedly installed inside the sheet metal slot tiles, and reversing circular sleeves are slidably installed on the outer walls of the light rods, and an anti-tearing spring is fixedly installed on one end of the reversing circular sleeve, and a cloth stretching wheel is fixedly installed on the end of the anti-tearing spring away from the reversing circular sleeve, and a path groove is provided on the outer wall of the reversing circular sleeve, and two front-and-rear distributed positioning pins are fixedly installed on the inner wall of a side surface of the sheet metal slot tile away from the centering movable slot plate, and two front-and-rear distributed servo motors are fixedly installed on the back sides of the upper and lower sheet metal slot tiles, a driving gear is fixedly installed on the output shaft of the servo motor, and a driven gear is fixedly installed on the outer wall of the light rod.

[0009] As a preferred solution of the present invention, the periphery of the driven gear and the periphery of the driving gear are meshed, and the surface width of the driving gear is greater than the surface width of the driven gear.

[0010] As a preferred solution of the present invention, the cloth stretching wheel is located at the periphery of the polished rod, and the inner wall of the cloth stretching wheel is slidably connected to the outer wall of the polished rod, and the two path grooves in the front and rear directions are opened in opposite directions.

[0011] As a preferred solution of the present invention, the end of the positioning pin extends to the inside of the path groove, and the outer wall of the positioning pin is slidably connected to the inner wall of the path groove.

[0012] As a preferred solution of the present invention, a tension spring is provided on the outer sleeve of the telescopic tube, and the tension spring is fixedly installed between the centering movable slot plate and the sheet metal slot shoe.

[0013] As a preferred solution of the present invention, the opposite surfaces of the left and right centering movable groove plates are fixedly installed with fixing seats, the fixing seats are located between the upper and lower sheet metal groove tiles, and the side of the fixing seat away from the centering movable groove plate is fixedly installed with two ultrasonic welding rods distributed up and down, and the ultrasonic welding rods are fixed to the fixing seat by bolts.

[0014] As a preferred solution of the present invention, a base is fixedly installed on the bottom wall of the upper frame, two left-right symmetrically distributed angle brackets are fixedly installed on the top of the base, and two servo push rods distributed up and down are fixedly installed on the side faces away from each other of the two angle brackets, and the output rod ends of the upper and lower servo push rods are fixedly connected to the side of the centering movable slot plate.

[0015] As a preferred solution of the present invention, a storage roller is rotatably installed on the top of the aluminum profile frame through an external support frame, and bearing seats are fixedly installed on the front and rear ends of the base. There are two bearing seats, and four clamping rollers are rotatably installed between the two bearing seats. The four clamping rollers are arranged in two layers, and each layer has two on the left and right. The clamping rollers are arranged perpendicular to the storage rollers.

[0016] As a preferred solution of the present invention, distance sensors are fixedly installed on the tops of the two sheet metal groove tiles located at the upper part, and the distance sensors are electrically connected to the servo motor.

[0017] As a preferred solution of the present invention, a winding device is provided inside the lower frame, and a material observation port is provided through the left wall of the lower frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, the output shafts of the front and rear servo motors rotate to drive the front and rear driving gears to rotate in the opposite direction, further driving the front and rear driven gears to rotate in the opposite direction, and during the reverse rotation of the front and rear driven gears, the front and rear reversing sleeves, the anti-tearing spring and the stretching wheel are driven to rotate in the opposite direction, and the friction between the front and rear stretching wheels and the surface of the non-woven packaging bag is used to straighten the non-woven packaging bag front and back during the reverse rotation, thereby eliminating the front and rear wrinkles of the non-woven packaging bag and avoiding the appearance of wrinkles and weld scars at the welding points. After the non-woven packaging bag is stretched front and back, if the front and rear reversing sleeves continue to rotate, the front and rear stretching wheels are affected by the reaction force of the non-woven packaging bag and cannot continue to rotate. Therefore, the anti-tearing spring between the reversing sleeve and the stretching wheel generates torsional elastic force storage, thereby eliminating the continued twisting effect of the reversing sleeve on the stretching wheel, and avoiding excessive front and rear stretching force on the non-woven packaging bag, which may cause the non-woven packaging bag to tear.

[0020] 2. In the present invention, while the reversing sleeve is driven by the driven gear to rotate, the reversing sleeve also drives the path groove to rotate together, so that under the sliding connection between the positioning pin and the path groove, the reversing sleeve generates a force to slide along the axial direction of the light rod, and further pulls the stretching wheel to move together through the connecting action of the anti-tear spring, exerts a straightening effect on the non-woven packaging bag in the up and down directions, and combined with the straightening effect on the non-woven packaging bag in the front and back directions, the transverse and longitudinal wrinkles of the non-woven packaging bag can be eliminated, and wrinkles and weld scars can be avoided at the welding points. Moreover, after the non-woven packaging bag is stretched up and down, if the reversing sleeve continues to rotate, the stretching wheel is subjected to the reaction force of the non-woven packaging bag, causing it to interrupt its movement, and the anti-tear spring located between the reversing sleeve and the stretching wheel will be stretched and stored, eliminating the continued pulling effect on the stretching wheel, and avoiding excessive up and down stretching force on the non-woven packaging bag to cause it to tear.

[0021] 3. In the present invention, the storage roller is rotatably installed on the top of the device by using a support frame, and the storage roller is kept vertical to the clamping roller in the device, the non-woven packaging bag blank is rolled up on the periphery of the storage roller, and its released end is passed through between the left and right clamping rollers in a folded manner, and is fixed on the winding device located inside the lower frame. The winding device here can be selected from existing products that can be installed in conjunction with it. Due to the folding effect of the left and right clamping rollers on the non-woven packaging bag blank, the bottom of the non-woven packaging bag is formed, and combined with the subsequent welding of the upper and lower parts of the non-woven packaging bag blank, it can be formed, thereby simplifying the processing steps and improving the efficiency of welding and forming of non-woven packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the welding assembly in the present invention;

[0024] Figure 3 For the present invention Figure 2 Schematic diagram of the local structure;

[0025] Figure 4 It is a front view planar structure schematic diagram of the welding assembly in the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of part A;

[0027] Figure 6 It is a detailed structural schematic diagram of the welding assembly in the present invention;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the local structure;

[0029] Figure 8 For the present invention Figure 7 Schematic diagram of the local structure;

[0030] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of part B.

[0031] In the figure: 100, aluminum profile frame; 101, upper frame; 102, lower frame; 1021, material observation port; 200, welding assembly; 201, centering movable slot plate; 202, telescopic hole; 203, telescopic tube; 204, sheet metal slot tile; 205, light rod; 206, reversing sleeve; 207, anti-tear spring; 208, cloth stretching wheel; 209, path groove; 2010, positioning pin; 2011, driven gear; 2012, servo motor; 2013, driving gear; 2014, tensioning spring; 300, distance sensor; 400, fixing seat; 500, ultrasonic welding rod; 600, angle bracket; 700, servo push rod; 800, base; 900, bearing seat; 1000, clamping roller; 1100, storage roller. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0033] See also Figure 1-Figure 9 The technical solution provided by the present invention specifically includes the following embodiments:

[0034] A tear-resistant non-woven packaging bag production welding forming device includes an aluminum profile frame 100 and a welding assembly 200. The aluminum profile frame 100 includes an upper frame 101 and a lower frame 102. The lower frame 102 is located at the bottom of the upper frame 101. A winding device is provided inside the lower frame 102. A material observation port 1021 is provided through the left wall of the lower frame 102. A welding assembly 200 is provided inside the upper frame 101. The welding assembly 200 includes two symmetrically distributed centering movable slot plates 201. Telescopic holes 202 are provided at four corners of the opposite surfaces of the two centering movable slot plates 201. Telescopic tubes 203 are slidably installed inside the telescopic holes 202. The ends of the two telescopic holes 202 located at the upper part and the ends of the two telescopic holes 202 located at the lower part are both fixedly installed with sheet metal slot tiles. 204, two front-to-back distributed polished rods 205 are fixedly installed inside the sheet metal slot 204, and a reversing sleeve 206 is slidably installed on the outer wall of the polished rod 205, and an anti-tearing spring 207 is fixedly installed on one end of the reversing sleeve 206, and a stretching wheel 208 is fixedly installed on the end of the anti-tearing spring 207 away from the reversing sleeve 206, and the stretching wheel 208 is located at the periphery of the polished rod 205, and the inner wall of the stretching wheel 208 is slidably connected with the outer wall of the polished rod 205, and two servo motors 2012 distributed front-to-back are fixedly installed on the back sides of the upper and lower sheet metal slots 204, and a driving gear 2013 is fixedly installed on the output shaft of the servo motor 2012, and a driven gear 2011 is fixedly installed on the outer wall of the polished rod 205, and the periphery of the driven gear 2011 and the periphery of the driving gear 2013 are meshed with each other;

[0035] The tops of the two sheet metal slots 204 are fixed with distance sensors 300, and the distance sensors 300 are electrically connected to the servo motor 2012;

[0036] A base 800 is fixedly installed on the bottom wall of the upper frame 101, and two left-right symmetrically distributed corner brackets 600 are fixedly installed on the top of the base 800. Two servo push rods 700 distributed up and down are fixedly installed on the side away from each other of the two corner brackets 600. The output rod ends of the upper and lower servo push rods 700 are fixedly connected to the side of the centering movable slot plate 201.

[0037] Specifically, the output rods of the servo push rods 700 in the left and right directions move closer to each other, pushing the left and right centering movable slot plates 201 toward the middle. During the movement of the two centering movable slot plates 201 toward the middle, the sheet metal slot tiles 204 and the fixed seat 400 are driven to move together. As the sheet metal slot tiles 204 continue to move, the outer walls of the two stretching wheels 208 in the left and right directions will first collide with the left and right sides of the folded non-woven packaging bag. At the same time, the movement of the sheet metal slot tiles 204 also drives the distance sensor 300 to move, so that the left and right distance sensors 300 gradually approach each other. When the left and right stretching wheels 208 both collide with the sides of the non-woven packaging bag, the left and right distance sensors 300 sense each other and the distance value reaches the trigger signal value requirement, and control each servo motor 2012 to start. It should be noted that the output shafts of the servo motors 2012 in the front and rear directions of the device rotate in opposite directions. Therefore, the output shafts of the front and rear servo motors 2012 rotate to drive the front and rear servo motors 2012. The driving gear 213 rotates in the reverse direction, further driving the two front and rear driven gears 211 to rotate in the reverse direction. During the reverse rotation of the two front and rear driven gears 211, the two front and rear reversing sleeves 206, the anti-tearing spring 207 and the stretching wheel 208 are driven to rotate in the reverse direction. The friction between the two front and rear stretching wheels 208 and the surface of the non-woven packaging bag makes the non-woven packaging bag straightened in the process of the reverse rotation, eliminating the front and rear wrinkles of the non-woven packaging bag and avoiding wrinkles at the welding position. Wrinkled weld scars. When the non-woven packaging bag is stretched straight forward and backward, if the front and rear two reversing sleeves 206 continue to rotate, the front and rear two stretching wheels 208 are unable to continue rotating due to the reaction force of the non-woven packaging bag. Therefore, the anti-tear spring 207 between the reversing sleeve 206 and the stretching wheel 208 accumulates torsional elastic force, thereby eliminating the continued twisting effect of the reversing sleeve 206 on the stretching wheel 208, avoiding excessive stretching force on the non-woven packaging bag and causing the non-woven packaging bag to tear.

[0038] The outer wall of the reversing sleeve 206 is provided with a path groove 209, and the two path grooves 209 in the front and rear directions are provided in opposite directions. Two positioning pins 2010 distributed front and back are fixedly installed on the inner wall of the side of the sheet metal groove shoe 204 away from the centering movable groove plate 201, and the ends of the positioning pins 2010 extend into the inside of the path groove 209, and the outer wall of the positioning pin 2010 is slidably connected with the inner wall of the path groove 209;

[0039] Specifically, when the driven gear 2011 drives the reversing sleeve 206 to rotate, the reversing sleeve 206 also drives the path groove 209 to rotate together, so that under the sliding connection between the positioning pin 2010 and the path groove 209, the reversing sleeve 206 generates a force to slide along the axial direction of the light rod 205, and further pulls the stretching wheel 208 to move together through the connection action of the anti-tear spring 207. It should be noted that the two path grooves 209 in the upper and lower directions are opened in opposite directions, so the two stretching wheels 208 in the upper and lower directions move in opposite directions, that is, the upper and lower stretching wheels 208 move in opposite directions, further The cloth packaging bag is stretched in the up and down directions, and combined with the stretching effect on the non-woven packaging bag in the front and back directions, the horizontal and vertical wrinkles of the non-woven packaging bag can be eliminated, and wrinkles and weld scars can be avoided. In addition, after the non-woven packaging bag is stretched up and down, if the reversing sleeve 206 continues to rotate, the stretching wheel 208 is subjected to the reaction force of the non-woven packaging bag, causing it to interrupt its movement, and the anti-tear spring 207 located between the reversing sleeve 206 and the stretching wheel 208 will be stretched and stored, eliminating the continued pulling effect on the stretching wheel 208, and avoiding excessive up and down stretching force on the non-woven packaging bag to cause it to tear.

[0040] Furthermore, the face width of the driving gear 2013 is greater than the face width of the driven gear 2011; when the reversing sleeve 206 moves axially along the polished rod 205, it drives the driven gear 2011 to move together, and since the face width of the driving gear 2013 is greater than the face width of the driven gear 2011, the driven gear 2011 can always mesh with the driving gear 2013 during the upward movement, thereby ensuring that the transmission to the driven gear 2011 is not interrupted.

[0041] Please refer to Figure 5 , Figure 7 and Figure 8 As shown, the outer periphery of the telescopic tube 203 is provided with a tension spring 2014, which is fixedly installed between the centering movable slot plate 201 and the sheet metal slot tile 204, and the opposite surfaces of the left and right centering movable slot plates 201 are fixedly installed with a fixing seat 400, which is located between the upper and lower sheet metal slot tiles 204, and the side of the fixing seat 400 away from the centering movable slot plate 201 is fixedly installed with two ultrasonic welding rods 500 distributed up and down, and the ultrasonic welding rods 500 are fixed to the fixing seat 400 by bolts;

[0042] Specifically, the two centering movable slot plates 201 continue to move toward the middle, causing the telescopic tube 203 to slide along the inner wall of the telescopic hole 202, further compressing the tension spring 2014. The centering movable slot plate 201 continues to move, which drives the two left and right fixing seats 400 together with the ultrasonic welding rod 500 to move together, until the two ultrasonic welding rods 500 in the left and right directions respectively abut against the left and right sides of the non-woven packaging bag, and ultrasonic welding is performed on the non-woven packaging bag, thereby forming a bag structure, and due to the compression rebound force of the tension spring 2014 in the left and right directions The function can ensure that the ultrasonic welding rods 500 in the left and right directions are better fitted to the surface of the non-woven packaging bag, thereby improving the welding effect. After the welding is completed, the servo push rods 700 in the left and right directions output rods to drive the left and right centering movable slot plates 201 to move away from each other, so that the left and right ultrasonic welding rods 500 and the stretching wheel 208 are separated. At this time, the control system of the device controls the winding equipment located inside the lower frame 102 to pull the non-woven packaging bag downward by the distance of a bag body again, and repeats the above welding process to realize automatic flow processing with high efficiency.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, a receiving roller 1100 is rotatably mounted on the top of the aluminum profile frame 100 through an external support frame, and a bearing seat 900 is fixedly mounted on the front and rear ends of the base 800. There are two bearing seats 900, and four clamping rollers 1000 are rotatably mounted between the two bearing seats 900. The four clamping rollers 1000 are arranged in two layers, and each layer has two left and right rollers. The clamping rollers 1000 and the receiving rollers 1100 are arranged vertically.

[0044] Specifically, the storage roller 1100 is rotatably installed on the top of the device by using a support frame, and the storage roller 1100 is kept vertical to the clamping roller 1000 in the device, the non-woven packaging bag blank is rolled up on the periphery of the storage roller 1100, and its released end is folded in half to pass through between the left and right clamping rollers 1000, and fixed on the winding device located inside the lower frame 102. The winding device here can be selected from existing products that can be installed in combination with it. Due to the folding effect of the left and right clamping rollers 1000 on the non-woven packaging bag blank, the bottom of the non-woven packaging bag is formed, and combined with the subsequent welding of the upper and lower parts of the non-woven packaging bag blank, it can be formed, thereby simplifying the processing steps and improving the efficiency of welding and forming of non-woven packaging bags.

[0045] In the present invention, a tear-resistant non-woven packaging bag production welding and forming device is used to rotate and install the storage roller 1100 on the top of the device by using a support frame, and the storage roller 1100 is kept vertical to the clamping roller 1000 in the device, and the non-woven packaging bag blank is rolled up on the periphery of the storage roller 1100, and the release end thereof is passed through between the left and right clamping rollers 1000 in a folded manner, and is fixed on the winding device located inside the lower frame 102. The winding device here can be selected from existing products that can be installed in conjunction with it;

[0046] The non-woven packaging bag wound on the receiving roller 1100 is intermittently unwound by the winding device inside the lower frame 102, and the winding device inside the lower frame 102 is programmed to realize each winding, and the non-woven packaging bag moves downward by a packaging bag width between the two clamping rollers 1000. When the non-woven packaging bag stays between the left and right clamping rollers 1000 each time, the servo push rods 700 in the left and right directions move, so that the output rods of the servo push rods 700 in the left and right directions move closer to each other, and the left and right centering moving slot plates 201 are pushed toward the middle, and the two centering moving slot plates 201 are moved to the middle. When the groove plate 201 moves toward the middle, it drives the sheet metal groove tile 204 and the fixing seat 400 to move together. As the sheet metal groove tile 204 continues to move, the outer walls of the two stretching wheels 208 in the left and right directions will first collide with the left and right sides of the folded non-woven packaging bag. At the same time, the movement of the sheet metal groove tile 204 also drives the distance sensor 300 to move, so that the left and right distance sensors 300 gradually approach each other. When the left and right stretching wheels 208 both collide with the sides of the non-woven packaging bag, the left and right distance sensors 300 sense each other and the distance value reaches the trigger signal value requirement, and the control Each servo motor 2012 is started. It should be noted that the output shafts of the servo motors 2012 in the front and rear directions of the device rotate in opposite directions. Therefore, after the output shafts of the front and rear servo motors 2012 rotate, they drive the front and rear driving gears 2013 to rotate in the opposite direction, and further drive the front and rear driven gears 2011 to rotate in the opposite direction. During the reverse rotation of the front and rear driven gears 2011, the front and rear reversing sleeves 206, the anti-tear spring 207 and the stretching wheel 208 are driven to rotate in the opposite direction. Through the friction between the front and rear stretching wheels 208 and the surface of the non-woven packaging bag, the non-woven packaging bag is stretched. During the reverse rotation, the non-woven packaging bag is stretched forward and backward to eliminate the front and back wrinkles of the non-woven packaging bag. After the non-woven packaging bag is stretched forward and backward, if the front and rear two reversing sleeves 206 continue to rotate, the front and rear two stretching wheels 208 are subjected to the reaction force of the non-woven packaging bag and cannot continue to rotate. Therefore, the anti-tear spring 207 between the reversing sleeve 206 and the stretching wheel 208 generates torsional elastic force storage, thereby eliminating the continued torsional effect of the reversing sleeve 206 on the stretching wheel 208, and avoiding excessive front and rear stretching force on the non-woven packaging bag, which may cause the non-woven packaging bag to tear;

[0047] When the driven gear 2011 drives the reversing sleeve 206 to rotate, the reversing sleeve 206 also drives the path groove 209 to rotate together, so that under the sliding connection between the positioning pin 2010 and the path groove 209, the reversing sleeve 206 generates a force to slide along the axial direction of the light rod 205, and further pulls the cloth stretching wheel 208 to move together through the connection action of the anti-tear spring 207. It should be noted here that the two path grooves 209 in the upper and lower directions are opened in opposite directions, so the two cloth stretching wheels 208 in the upper and lower directions move in opposite directions, that is, the upper and lower cloth stretching wheels 208 move in opposite directions, The non-woven packaging bag is stretched in the up-and-down direction in one step, and then stretched in the front-and-back direction, so that the horizontal and vertical wrinkles of the non-woven packaging bag can be eliminated. Moreover, after the non-woven packaging bag is stretched up and down, if the reversing sleeve 206 continues to rotate, the stretching wheel 208 is subjected to the reaction force of the non-woven packaging bag, causing it to stop moving, and the anti-tearing spring 207 located between the reversing sleeve 206 and the stretching wheel 208 is stretched and stored, eliminating the continued pulling effect on the stretching wheel 208, and avoiding excessive stretching force on the non-woven packaging bag up and down, which may cause it to tear;

[0048] During this period, the left and right centering movable slot plates 201 continue to move toward the middle, causing the telescopic tube 203 to slide along the inner wall of the telescopic hole 202, further compressing the tensioning spring 2014. The continued movement of the centering movable slot plate 201 will drive the left and right fixed seats 400 together with the ultrasonic welding rod 500 to move together, until the two ultrasonic welding rods 500 in the left and right directions are respectively against the left and right sides of the non-woven packaging bag, and the non-woven packaging bag is ultrasonically welded to form a bag structure. After welding is completed, the left and right servo push rods 700 output rods drive the left and right centering movable slot plates 201 to move away from each other, so that the left and right ultrasonic welding rods 500 and the stretching wheel 208 are separated. At this time, the control system of the device controls the winding equipment located inside the lower frame 102 to pull the non-woven packaging bag downward again by a bag body distance, and repeat the above welding process to achieve automatic flow processing with high efficiency.

[0049] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A tear-resistant non-woven packaging bag production welding and forming device, comprising an aluminum profile frame (100) and a welding assembly (200), characterized in that: The aluminum profile frame (100) comprises an upper frame (101) and a lower frame (102), wherein the lower frame (102) is located at the bottom of the upper frame (101), and a welding assembly (200) is provided inside the upper frame (101); The welding assembly (200) comprises two symmetrically distributed centering movable slot plates (201), the four corners of the opposite surfaces of the two centering movable slot plates (201) are each provided with a telescopic hole (202), a telescopic tube (203) is slidably mounted inside the telescopic hole (202), the ends of the two telescopic holes (202) located at the upper part and the ends of the two telescopic holes (202) located at the lower part are both fixedly mounted with a sheet metal slot tile (204), two frontally distributed light rods (205) are fixedly mounted inside the sheet metal slot tile (204), the outer walls of the light rods (205) are each slidably mounted with a reversing circular sleeve (206), and one end of the reversing circular sleeve (206) is fixedly mounted with an anti-tearing spring (207), A cloth stretching wheel (208) is fixedly mounted on one end of the anti-tear spring (207) away from the reversing sleeve (206); a path groove (209) is provided on the outer wall of the reversing sleeve (206); two positioning pins (2010) are fixedly mounted on the inner wall of a side surface of the sheet metal slot tile (204) away from the centering movable slot plate (201); two servo motors (212) are fixedly mounted on the opposite back surfaces of the upper and lower sheet metal slot tiles (204); the output shafts of the servo motors (212) in the front and rear directions rotate in opposite directions; a driving gear (213) is fixedly mounted on the output shaft of the servo motor (2012); and a driven gear (211) is fixedly mounted on the outer wall of the light rod (205).

2. The tear-resistant non-woven packaging bag production welding and forming device according to claim 1, characterized in that: The periphery of the driven gear (2011) and the periphery of the driving gear (2013) are meshed, and the surface width of the driving gear (2013) is greater than the surface width of the driven gear (2011).

3. The tear-resistant non-woven packaging bag production welding and forming device according to claim 2, characterized in that: The cloth stretching wheel (208) is located at the periphery of the polished rod (205), and the inner wall of the cloth stretching wheel (208) is slidably connected to the outer wall of the polished rod (205), and the two path grooves (209) in the front-rear direction are opened in opposite directions.

4. The tear-resistant non-woven packaging bag production welding and forming device according to claim 3, characterized in that: The end of the positioning pin (2010) extends to the interior of the path groove (209), and the outer wall of the positioning pin (2010) is slidably connected to the inner wall of the path groove (209).

5. The tear-resistant non-woven packaging bag production welding and forming device according to claim 4, characterized in that: A tension spring (2014) is sleeved on the outer periphery of the telescopic tube (203), and the tension spring (2014) is fixedly installed between the centering movable slot plate (201) and the sheet metal slot tile (204).

6. The tear-resistant non-woven packaging bag production welding and forming device according to claim 5, characterized in that: A fixing seat (400) is fixedly mounted on the opposing surfaces of the left and right centering movable groove plates (201); the fixing seat (400) is located between the upper and lower sheet metal groove tiles (204); and two ultrasonic welding rods (500) distributed vertically are fixedly mounted on a side of the fixing seat (400) away from the centering movable groove plate (201); the ultrasonic welding rods (500) are fixed to the fixing seat (400) by bolts.

7. The tear-resistant non-woven packaging bag production welding and forming device according to claim 6, characterized in that: A base (800) is fixedly mounted on the bottom wall of the upper frame (101); two left-right symmetrically distributed corner brackets (600) are fixedly mounted on the top of the base (800); two servo push rods (700) distributed up and down are fixedly mounted on the side faces of the two corner brackets (600) that are away from each other; the output rod ends of the two upper and lower servo push rods (700) are fixedly connected to the side of the centering movable slot plate (201).

8. The tear-resistant non-woven packaging bag production welding and forming device according to claim 7, characterized in that: A storage roller (1100) is rotatably mounted on the top of the aluminum profile frame (100) via an external support frame, and bearing seats (900) are fixedly mounted on the front and rear ends of the base (800), two bearing seats (900) are provided, and four clamping rollers (1000) are rotatably mounted between the two bearing seats (900), the four clamping rollers (1000) are arranged in two layers, one on the left and one on the right, and the clamping rollers (1000) are arranged perpendicular to the storage rollers (1100).

9. The tear-resistant non-woven packaging bag production welding and forming device according to claim 8, characterized in that: The tops of the two sheet metal groove tiles (204) located at the upper part are both fixedly mounted with distance sensors (300), and the distance sensors (300) are electrically connected to the servo motor (2012).

10. The tear-resistant non-woven packaging bag production welding and forming device according to claim 9, characterized in that: A winding device is provided inside the lower frame (102), and a material observation port (1021) is provided through the left wall of the lower frame (102).

Images