Ultrasonic welding machine for vest bags

Abstract

An ultrasonic bottom welding machine for vest bags includes a feeding device, an ultrasonic welding mechanism, a discharging device, and a station switching device. The feeding device includes a first belt conveyor with a bag-opening device at its output end. The ultrasonic welding mechanism includes a first support with multiple first telescopic mechanisms mounted on it, the telescopic ends of which are connected to a pressure welding mold. The discharging device includes a third moving mechanism mounted on a frame with a bag-clamping device mounted on its moving end. The station switching device includes a second support with a drive mechanism mounted on it, the output end of which is connected to a turntable. This invention addresses the problem of low efficiency in welding the bottom of vest bags.

Description

Technical Field

[0001] This invention belongs to the field of automatic equipment, and specifically relates to an ultrasonic welding machine for the bottom of a vest bag. Background Technology

[0002] The existing ultrasonic bottom welding machine for vest bags adopts a vertical welding method, and its structure is similar to that of the announcement number "CN 202688736 U, an ultrasonic automatic three-dimensional bottom welding machine". The loading and unloading are done manually, which is inefficient and difficult to meet the requirements of mass production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an ultrasonic welding machine for the bottom of vest bags, which solves the problem of low welding efficiency for the bottom of vest bags.

[0004] To solve the above problems, the technical solution of the present invention is as follows:

[0005] The ultrasonic welding machine for the bottom of vest bags includes a feeding device, an ultrasonic welding mechanism, a discharging device, and a station switching device.

[0006] The feeding device includes a first belt conveyor, and a bag-opening device is provided at the output end of the first belt conveyor. The bag-opening device includes a frame, on which a first moving mechanism and a second moving mechanism are installed. The first moving mechanism and the second moving mechanism are respectively located above and below the first belt conveyor. The moving ends of the first moving mechanism and the second moving mechanism are arranged opposite to each other. A bag-opening cylinder is installed on both the moving ends of the first moving mechanism and the moving ends of the second moving mechanism. Multiple first suction cups are installed on the telescopic ends of the bag-opening cylinders.

[0007] The ultrasonic welding mechanism includes a first support, on which multiple first telescopic mechanisms are installed, and the telescopic ends of the first telescopic mechanisms are connected to the pressure welding mold.

[0008] The feeding device includes a third moving mechanism mounted on the frame, and a bag clamping device is mounted on the moving end of the third moving mechanism;

[0009] The workstation switching device includes a second support, on which a drive mechanism is mounted. The output end of the drive mechanism is connected to a turntable. Multiple bag-carrying devices are mounted on the turntable. Each bag-carrying device has an insertion hole on one side of the turntable. The drive mechanism drives the bag-carrying devices on the turntable to rotate sequentially to the loading station, ultrasonic welding station, and unloading station. Bag-collecting mechanisms are respectively mounted on the second support on one side of the loading station and the unloading station. Each bag-carrying device includes a door frame fixedly connected to the turntable. Two tensioning strips are provided inside the door frame, with ear plates passing through the middle of the tensioning strips. Hinged to the door frame, the tensioning strip extends out of the door frame and is fixedly connected to the front top mold strip. The tensioning strip is located inside the door frame and is fixedly connected to the top plate. A notch is provided on the top plate facing the turntable, and two notches form a triangular groove. The two tensioning strips are connected by a spring. A limit plate is fixedly connected to the door frame. The spring pulls the two tensioning strips against the limit plate. The bag-collecting mechanism includes a first cylinder installed on the second support. The first cylinder is connected to a triangular insert plate. The first cylinder drives the triangular end of the insert plate to insert into the triangular groove.

[0010] A bag-stacking mechanism is provided on one side of the feeding device. The bag-stacking mechanism includes a second cylinder, a third cylinder, a fourth moving mechanism, and a fifth moving mechanism mounted on the frame. The fourth and fifth moving mechanisms are arranged vertically opposite each other. A first support plate is installed at the moving end of the fourth moving mechanism. The fourth cylinder and a T-shaped plate are respectively connected to both ends of the first support plate. A fifth cylinder is installed at the moving end of the fifth moving mechanism. Clamping plates are fixedly connected to the fourth and fifth cylinders respectively. First pneumatic fingers are installed at both ends of the T-shaped plate. The second cylinder is located between the fourth and fifth cylinders and is fixedly connected to the folding plate. A first support plate bent downward from one end is fixedly connected to the frame below the folding plate. The third cylinder is located between the fourth and second cylinders and is connected to the pressure plate. A second support plate is provided below the pressure plate.

[0011] A second belt conveyor is provided below the first pneumatic finger. A third belt conveyor and a bag-pressing shaft are installed on the frame of the second belt conveyor. The belts on the second belt conveyor and the belts on the third belt conveyor rotate synchronously in opposite directions. A rocker arm is installed at one end of the bag-pressing shaft. The rocker arm is hinged to the frame of the second belt conveyor through a bag-pressing cylinder. Multiple pressing rods are fixedly connected to the bag-pressing shaft. A bag-pressing wheel is installed at one end of the pressing rod. The bag-pressing cylinder drives the bag-pressing wheel to abut against the conveyor belt of the second belt conveyor.

[0012] The bag stacking mechanism also includes a second support plate installed on the top of the frame between the second cylinder and the third cylinder. First rotary cylinders are installed at both ends of the second support plate, and first folding strips are connected to the first rotary cylinders respectively.

[0013] The feeding device also includes a strap straightening device, which includes a bracket installed on the top of the frame, a second telescopic mechanism installed on the bracket, a tensioning plate installed on the telescopic end of the second telescopic mechanism, and a second rotary cylinder installed at both ends of the tensioning plate, with a second folding strip connected to each of the second rotary cylinders.

[0014] The bag clamping device includes two guide rods fixedly connected to the moving end of the third moving mechanism, a bag baffle is provided between the two guide rods, and second pneumatic fingers are respectively installed at the upper and lower ends of the guide rods.

[0015] A fourth belt conveyor is provided at the input end of the first belt conveyor. A gantry is installed on the frame of the fourth belt conveyor. One end of the gantry is located above the first belt conveyor. A sixth moving mechanism is installed on the gantry. A third telescopic mechanism is installed on the moving end of the sixth moving mechanism. Multiple second suction cups are installed on the lifting end of the third telescopic mechanism.

[0016] The beneficial effects of this invention are as follows: it can replace manual labor in feeding, tensioning, welding, and unloading vest bags, thus improving production efficiency. Furthermore, it can pull the vest bag straps, allowing them to be hung on other components, and it can perform bottom welding while the bottom of the vest bag is taut, ensuring a flat and aesthetically pleasing weld. Additionally, it can fold and flatten the welded vest bag, which is beneficial for packaging and boxing, improving processing quality. Attached Figure Description

[0017] The invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0024] Figure 7This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the workstation switching device, bag-opening device, and ultrasonic welding mechanism of the present invention.

[0026] Figure 9 This is a three-dimensional structural diagram of the workstation switching device and ultrasonic welding mechanism of the present invention.

[0027] Figure 10 This is a three-dimensional structural diagram of the workstation switching device and ultrasonic welding mechanism of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the workstation switching device and ultrasonic welding mechanism of the present invention.

[0029] Figure 12 This is a three-dimensional structural diagram of the bag-carrying device of the present invention.

[0030] Figure 13 This is a three-dimensional structural diagram of the workstation switching device, the feeding device, and the bag stacking mechanism of the present invention.

[0031] Figure 14 This is a three-dimensional structural diagram of the workstation switching device, the feeding device, and the bag stacking mechanism of the present invention.

[0032] Figure 15 This is a three-dimensional structural diagram of the workstation switching device, the feeding device, and the bag stacking mechanism of the present invention.

[0033] Figure 16 This is a three-dimensional structural diagram of the workstation switching device, the feeding device, and the bag stacking mechanism of the present invention.

[0034] In the picture:

[0035] Feeding device 100; fourth belt conveyor 101, gantry 102, sixth moving mechanism 103, third telescopic mechanism 104, second suction cup 105, first moving mechanism 106, first suction cup 107, bag opening cylinder 108, second moving mechanism 109, first belt conveyor 110;

[0036] Ultrasonic welding mechanism 200; first support 201, first telescopic mechanism 202, pressure welding mold 203;

[0037] Workstation switching device 300; insert plate 301, first cylinder 302, second support 303, drive mechanism 304, turntable 305, top plate 306, door frame 307, limit plate 308, ear plate 309, bag shell 310, front top mold strip 311, tension strip 312, spring 313, guide shell 314;

[0038] 400 bag stacking mechanism; clamping plate 401, fourth moving mechanism 402, T-shaped plate 403, first pneumatic finger 404, first folding strip 405, first rotary cylinder 406, folding plate 407, second cylinder 408, fifth moving mechanism 409, fifth cylinder 410, fourth cylinder 411, pressure plate 412, third cylinder 413, second support plate 414, first support plate 415;

[0039] Bag pressing device 500; second belt conveyor 501, third belt conveyor 502, bag pressing shaft 503, pressing rod 504, bag pressing wheel 505, bag pressing cylinder 506;

[0040] The feeding device 600; the third moving mechanism 601; the second pneumatic finger 602; the second telescopic mechanism 603; the second rotary cylinder 604; and the second folding bar 605. Detailed Implementation

[0041] like Figure 1 and 2 As shown, the ultrasonic welding machine for the bottom of a vest bag includes a feeding device 100, an ultrasonic welding mechanism 200, a discharging device 600, and a station switching device 300.

[0042] like Figures 3 to 7 As shown, the feeding device 100 includes a first belt conveyor 110. A bag-opening device is provided at the output end of the first belt conveyor 110. The bag-opening device includes a frame, on which a first moving mechanism 106 and a second moving mechanism 109 are mounted. The first moving mechanism 106 and the second moving mechanism 109 are respectively located above and below the first belt conveyor 110. The moving ends of the first moving mechanism 106 and the second moving mechanism 109 are arranged opposite to each other. A bag-opening cylinder 108 is mounted on the moving ends of the first moving mechanism 106 and the second moving mechanism 109. Two first suction cups 107 are installed on the telescopic ends of the bag-opening cylinder 108. The first moving mechanism 106, the second moving mechanism 109, and the third moving mechanism 601, the fourth moving mechanism 402, the fifth moving mechanism 409, and the sixth moving mechanism 103 described below are all servo synchronous belt linear modules. The bag-opening cylinder 108 is a sliding cylinder to ensure that the two sets of first suction cups 107 accurately pick up the upper and lower sides of the vest bag.

[0043] like Figures 11 to 13 As shown, the ultrasonic welding mechanism 200 includes a first support 201, on which two first telescopic mechanisms 202 are mounted. The telescopic ends of the first telescopic mechanisms 202 are connected to the pressure welding mold 203 in the ultrasonic welding machine. The first telescopic mechanism 202 includes a welding cylinder, a guide rod, a guide sleeve and a connecting plate. The first telescopic mechanism 202 is used to drive the pressure welding mold 203 to move horizontally.

[0044] The feeding device 600 includes a third moving mechanism 601 mounted on the frame, and a bag clamping device is mounted on the moving end of the third moving mechanism 601.

[0045] like Figures 8 to 12 As shown, the workstation switching device 300 includes a second support 303, on which a drive mechanism 304 is mounted. The drive mechanism 304 includes a drive motor and a cam indexer mounted on the second support 303. The drive motor is connected to the cam indexer via a sprocket and chain transmission mechanism. The output end of the cam indexer is connected to a turntable 305. Four bag-carrying devices are mounted on the turntable 305. Each bag-carrying device has an insertion hole on one side of the turntable 305. The drive motor drives the bag-carrying devices on the turntable 305 to rotate sequentially to the loading station, the ultrasonic welding station, and the unloading station via the cam indexer. On the second support 303 on one side of the loading station and the unloading station, respectively... The bag-collecting mechanism includes a door frame 307 fixedly connected to a turntable 305. Two tension strips 312 are provided inside the door frame 307. The middle part of the tension strip 312 is hinged to the door frame 307 through an ear plate 309. One end of the tension strip 312 extending out of the door frame 307 is fixedly connected to a front top mold strip 311. One end of the tension strip 312 located inside the door frame 307 is fixedly connected to a top plate 306. A notch is provided on the top plate 306 facing the turntable 305. The two notches form a triangular groove. The two tension strips 312 are connected by a spring 313. A limiting plate 308 is fixedly connected to the door frame 307. The spring 313 pulls the two tension strips 312 against the limiting plate 308.

[0046] The bag-collecting mechanism includes a first cylinder 302 mounted on a second support 303. The first cylinder 302 is connected to a triangular insert plate 301. The first cylinder 302 drives the triangular end of the insert plate 301 to insert into a triangular groove. The inclined plane pushes two tension strips 312 to rotate, so that the end of the tension strip 312 away from the turntable 305 is pulled inward. As the end of the tension strip 312 away from the turntable 305 is pulled inward, the distance between the two front top mold strips 311 is reduced, making it easier to put the vest bag onto the bag-carrying device or pull it out of the bag-carrying device. In addition, when one end of the insert plate 301 is pulled out of the triangular groove, the spring 313 pulls the end of the tension strip 312 away from the turntable 305 to expand outward, so as to straighten and flatten the vest bag on the bag-carrying device, ensuring that the bottom surface of the vest bag is flat, which is beneficial for welding the bottom surface of the vest bag.

[0047] like Figures 13 to 16As shown, a bag stacking mechanism 400 is provided on one side of the feeding device. The bag stacking mechanism 400 includes a second cylinder 408, a third cylinder 413, a fourth moving mechanism 402, and a fifth moving mechanism 409 mounted on the frame. The fourth moving mechanism 402 and the fifth moving mechanism 409 are arranged vertically opposite each other. A first support plate is installed at the moving end of the fourth moving mechanism 402. A fourth cylinder 411 and a T-shaped plate 403 are respectively connected to both ends of the first support plate. A fifth cylinder 410 is installed at the moving end of the fifth moving mechanism 409. A clamping plate 401 is fixedly connected to the T-shaped plate 403. First pneumatic fingers 404 are installed at both ends of the T-shaped plate 403. A second cylinder 408 is located between the fourth cylinder 411 and the fifth cylinder 410, and is fixedly connected to a folding plate 407. A first support plate 415, bent downwards from one end, is fixedly connected to the frame below the folding plate 407. The first support plate 415 supports the vest bag. A third cylinder 413 is located between the fourth cylinder 411 and the second cylinder 408, and is connected to a pressure plate 412. A second support plate 414 is located below the pressure plate 412. After the unloading device removes the vest bag from the bag-carrying device, the folding mechanism 400 clamps the vest bag off the unloading device, and then folds the bottom and sides of the vest bag.

[0048] like Figure 4 As shown, a bag-pressing device 500 is provided below the first pneumatic finger 404. The bag-pressing device 500 includes a second belt conveyor 501. A third belt conveyor 502 and a bag-pressing shaft 503 are mounted on the frame of the second belt conveyor 501. The third belt conveyor 502 and the second belt conveyor 501 are connected and driven by a synchronous belt drive mechanism. The belt on the second belt conveyor 501 and the belt on the third belt conveyor 502 rotate synchronously in opposite directions. A rocker arm is mounted on one end of the bag-pressing shaft 503. The rocker arm is hinged to the frame of the second belt conveyor 501 through a bag-pressing cylinder 506. Multiple pressing rods 504 are fixedly connected to the bag-pressing shaft 503. A bag-pressing wheel 505 is mounted on one end of the pressing rod 504. The bag-pressing cylinder 506 drives the bag-pressing wheel 505 to abut against the conveyor belt of the second belt conveyor 501.

[0049] When the stacking mechanism 400 grabs a vest bag from the feeding device, the first pneumatic finger 404 grabs the vest bag that has already been folded. After the stacking mechanism 400 grabs a new vest bag and enters the stacking process, the first pneumatic finger 404 places the folded vest bag onto the second belt conveyor 501. The vest bag on the second belt conveyor 501 is first sorted by the pressing wheel driven by the pressing cylinder 506, and then passes between the second belt conveyor 501 and the third belt conveyor 502. The second belt conveyor 501 and the third belt conveyor 502 flatten the vest bag, leaving creases at the folds, making the vest bag flat, which is beneficial for printing, storage and boxing.

[0050] The folding mechanism 400 also includes a second support plate mounted on the top of the frame between the second cylinder 408 and the third cylinder 413. First rotary cylinders 406 are mounted at both ends of the second support plate, and first folding strips 405 are connected to each of the first rotary cylinders 406. The two first rotary cylinders 406 drive the two first folding strips 405 to rotate inwards to fold the sides of the vest bag.

[0051] The feeding device 600 also includes a strap straightening device, which includes a bracket installed on the top of the frame. A second telescopic mechanism 603 is installed on the bracket. A tensioning plate is installed on the telescopic end of the second telescopic mechanism 603. A second rotary cylinder 604 is installed on both ends of the tensioning plate. A second folding bar 605 is connected to the second rotary cylinder 604.

[0052] The bag clamping device is located on one side of the unloading station of the turntable 305. The bag clamping device includes two guide rods fixedly connected to the moving end of the third moving mechanism 601. A bag baffle is provided between the two guide rods. Second pneumatic fingers 602 are respectively installed at the upper and lower ends of the guide rods.

[0053] After the bag-carrying device rotates the completed vest bag to the unloading station, the insert plate 301 in the bag-collecting mechanism inserts into the triangular groove formed by the two top plates 306, driving the two front top mold strips to retract inward, thus releasing the vest bag and exposing its four corners. Then, the third moving mechanism 601 drives the four second pneumatic fingers 602 to move towards the vest bag and then return, so that the four second pneumatic fingers 602 clamp the four corners of the vest bag and pull the vest bag out of the bag-carrying device. During the process of the vest bag being pulled out, the two second rotary cylinders 604 drive the two second folding strips 605 to insert... The material is inserted into the side of the vest bag. At the same time, the second telescopic mechanism 603 drives the second fold strip 605 to move towards the turntable 305. In this way, the second fold strip 605 can hook the two shoulder straps of the vest bag along the side of the vest bag and straighten the shoulder straps. Then, the second telescopic mechanism 603, the second fold strip 605 and the second pneumatic finger 602 move synchronously and in the same direction to ensure that the vest bag is in a straight state when it is unloaded. The purpose is to: firstly, prevent the shoulder straps from scratching the moving parts; and secondly, to accurately position the vest bag so that the stacking device can accurately grasp the bag and reduce stacking errors.

[0054] The feeding device 100 also includes a fourth belt conveyor 101 disposed at the input end of the first belt conveyor 110. A gantry 102 is mounted on the frame of the fourth belt conveyor 101. One end of the gantry 102 is located above the first belt conveyor 110. A sixth moving mechanism 103 is mounted on the gantry 102. A third telescopic mechanism 104 is mounted on the moving end of the sixth moving mechanism 103. A plurality of second suction cups 105 are mounted on the lifting end of the third telescopic mechanism 104.

[0055] Unsealed vest bags are stacked in a material box. When loading, the staff can place the material box on the fourth belt conveyor 101. The fourth belt conveyor 101 transports the material box to the gantry 102. The sixth moving mechanism 103 drives the third telescopic mechanism 104 to move above the material box. Then, the second suction cup 105 is driven to descend and suck up the vest bags in the material box. After that, the sixth moving mechanism 103 moves the vest bags above the first belt conveyor 110. Finally, the third telescopic mechanism 104 drives the second suction cup 105 to descend, and the second suction cup 105 places the vest bags on the first belt conveyor 110. The first belt conveyor 110 then sends the vest bags into the loading station, which can realize batch loading of vest bags.

[0056] Multiple trapezoidal pouch shells 310 are connected between the front top mold strip 311 and the tension strip 312, and multiple trapezoidal guide shells 314 are connected to the door frame 307. The pouch shells 310 and guide shells 314 are used to support and guide the vest bag.

[0057] The working process of this invention is as follows:

[0058] Step 1: The staff places the material box containing the vest bags into the fourth belt conveyor 101, which then transports the material box into the gantry 102. After that, the sixth moving mechanism 103, together with the third telescopic mechanism 104 and the second suction cup 105, puts the vest bags in the material box one by one into the first belt conveyor 110.

[0059] Step 2: The first belt conveyor 110 conveys the vest bag towards the bag-opening device. When the vest bag is conveyed below the first moving mechanism 106, the bag-opening cylinder 108 connected to the first moving mechanism 106 moves downward, allowing the first suction cup 107 on the first moving mechanism 106 to pick up the vest bag. Then, the vest bag is pulled upward a certain distance so that the edge of the vest bag avoids the limiting baffle at one end of the first belt conveyor 110. Next, the first moving mechanism 106 drives the vest bag to move towards the upward feeding station. When one end of the vest bag moves out of the first belt conveyor 110, the first suction cup 107 on the first moving mechanism 106 and the first suction cup 108... The first suction cups 107 on the two moving mechanisms 109 correspond to each other. Then, the bag-opening cylinder 108 connected to the second moving mechanism 109 moves upward, allowing the first suction cups 107 on the second moving mechanism 109 to suck up the bottom of the vest bag. Then, the two sets of bag-opening cylinders 108 drive the upper and lower sets of first suction cups 107 to move in opposite directions to open the opening of the vest bag. Then, the first moving mechanism 106 and the second moving mechanism 109 synchronously drive the upper and lower sets of first suction cups 107 to move towards the bag-carrying device to put the vest bag on the bag-carrying device. At this time, the vest bag is in the loading position of the turntable 305. After that, the bag-opening device returns to the initial position.

[0060] Step 3: The bag collecting mechanism at the loading station operates as follows: When the first cylinder 302 at the loading station pulls the insert plate 301 out of the triangular groove, the spring 313 pulls the two tension strips 312 outward to stretch the vest bag covered on the bag carrier device. Then, the drive mechanism 304 drives the turntable 305 to rotate 90 degrees. At this time, the bag carrier device covered with the vest bag is rotated to the ultrasonic welding station. Then, the first telescopic mechanism 202 drives the two sets of pressure welding molds 203 to abut against the front top mold strip 311. After that, the pressure welding molds 203 cooperate with the front top mold strip 311 to perform bottom welding on the vest bag. After the bottom welding is completed, the ultrasonic welding mechanism 200 returns to the initial position.

[0061] Step 4: The drive mechanism 304 drives the turntable 305 to rotate 90 degrees, rotating the welded vest bag to the unloading station. The unloading device 600 unloads the vest bag, and then the stacking mechanism 400 operates. Its working process is as follows: the fourth moving mechanism 402 and the fifth moving mechanism 409 simultaneously drive the two clamping plates 401 to move to the front and back of the vest bag. Then, the fourth cylinder 411 and the fifth cylinder 410 drive the clamping plates 401 to clamp the vest bag. During the process, the two second rotary cylinders 604 first drive the two second folding strips 605 to loosen the vest bag straps, then the four second pneumatic fingers 602 loosen the bottom of the vest bag. Next, the fourth moving mechanism 402 and the fifth moving mechanism 409 drive the vest bag to move onto the second tray 414. Then, the third cylinder 413 drives the pressure plate 412 downward to press the vest bag firmly onto the second tray 414. Finally, the fourth cylinder 411 and the fifth cylinder 410 drive the clamping plate 401 to... The vest bag is released, then the two first rotary cylinders 406 drive the first folding strip 405 to rotate, inserting the first folding strip 405 into both sides of the vest bag. Then, the second cylinder 408 drives the folding plate 407 to move, folding the bottom of the vest bag. Then, the fourth moving mechanism 402 and the fifth moving mechanism 409 drive the two clamping plates 401 to clamp the next vest bag. At the same time, the first pneumatic fingers 404 at both ends of the T-shaped plate 403 move and complete the folding of the vest bag. After the two first pneumatic fingers 404 grasp both ends of the vest bag, the third cylinder 413 drives the pressure plate 412 to move upward, releasing the folded vest bag. At the same time, the first fold strip 405 is pulled out from both sides of the vest bag and the folding plate 407 retracts to its original position. The fourth moving mechanism 402 and the fifth moving mechanism 409 drive the two clamping plates 401 to move the new vest bag onto the second tray 414. Then, the first pneumatic fingers 404 place the folded vest bag onto the second belt conveyor 501.

[0062] Step 5: The second belt conveyor 501 and the third belt conveyor 502 flatten the vest bag, leaving creases at the folds of the vest bag, and finally the belt conveyor 501 transports the vest bag out.

[0063] Therefore, this invention can automatically complete the bottom welding process of vest bags and fold the welded vest bags, making the welded vest bags flat and beautiful, which greatly improves the bottom welding efficiency of vest bags.

Claims

1. An ultrasonic welding machine for the bottom of a vest bag, characterized in that: It includes a feeding device (100), an ultrasonic welding mechanism (200), a discharging device (600), and a station switching device (300). The feeding device (100) includes a first belt conveyor (110), and a bag-opening device is provided at the output end of the first belt conveyor (110); The ultrasonic welding mechanism (200) includes a first support (201), on which a plurality of first telescopic mechanisms (202) are installed, and the telescopic ends of the first telescopic mechanisms (202) are connected to the pressure welding mold (203); The feeding device (600) includes a third moving mechanism (601) mounted on the frame, and a bag clamping device is mounted on the moving end of the third moving mechanism (601); The workstation switching device (300) includes a second support (303), on which a drive mechanism (304) is installed. The output end of the drive mechanism (304) is connected to a turntable (305). Multiple bag carriers are installed on the turntable (305). Each bag carrier has an insertion hole on one side of the turntable (305). The drive mechanism (304) drives the bag carriers on the turntable (305) to rotate sequentially to the loading station, the ultrasonic welding station, and the unloading station. A bag collecting mechanism is installed on the second support (303) on one side of the loading station and the unloading station, respectively. The bag-carrying device includes a door frame (307) fixedly connected to a turntable (305). Two tension strips (312) are provided inside the door frame (307). The middle of each tension strip (312) is hinged to the door frame (307) via an ear plate (309). One end of the tension strip (312) extending out of the door frame (307) is fixedly connected to a front top mold strip (311). One end of the tension strip (312) inside the door frame (307) is fixedly connected to a top plate (306). A notch is provided on the top plate (306) facing the turntable (305), through which two notches... The opening forms a triangular groove, and the two tension bars (312) are connected by a spring (313). A limit plate (308) is fixedly connected to the door frame (307). The spring (313) pulls the two tension bars (312) against the limit plate (308). The bag-collecting mechanism includes a first cylinder (302) installed on the second support (303). The first cylinder (302) is connected to a triangular insert plate (301) with one end being triangular. The first cylinder (302) drives the insert plate (301) to insert one triangular end into the triangular groove. A bag stacking mechanism (400) is provided on one side of the feeding device. The bag stacking mechanism (400) includes a second cylinder (408), a third cylinder (413), a fourth moving mechanism (402), and a fifth moving mechanism (409) mounted on the frame. The fourth moving mechanism (402) and the fifth moving mechanism (409) are arranged vertically opposite each other. A first support plate is installed at the moving end of the fourth moving mechanism (402). A fourth cylinder (411) and a T-shaped plate (403) are respectively connected to both ends of the first support plate. A fifth cylinder (410) is installed at the moving end of the fifth moving mechanism (409). The fourth cylinder (411) and the fifth moving mechanism (409) are arranged vertically opposite each other. A clamping plate (401) is fixedly connected to the five cylinders (410). A first pneumatic finger (404) is installed at both ends of the T-shaped plate (403). A second cylinder (408) is located between the fourth cylinder (411) and the fifth cylinder (410). The second cylinder (408) is fixedly connected to the folding plate (407). A first support plate bent downward from one end is fixedly connected to the frame below the folding plate (407). A third cylinder (413) is located between the fourth cylinder (411) and the second cylinder (408). The third cylinder (413) is connected to the pressure plate (412). A second support plate (414) is provided below the pressure plate (412).

2. The ultrasonic welding machine for the bottom of a vest bag according to claim 1, characterized in that: The bag-opening device includes a frame on which a first moving mechanism (106) and a second moving mechanism (109) are mounted. The first moving mechanism (106) and the second moving mechanism (109) are respectively positioned above and below the first belt conveyor (110). The moving ends of the first moving mechanism (106) and the second moving mechanism (109) are positioned opposite each other. A bag-opening cylinder (108) is mounted on the moving ends of the first moving mechanism (106) and the second moving mechanism (109). Multiple first suction cups (107) are mounted on the telescopic ends of the bag-opening cylinders (108).

3. The ultrasonic welding machine for the bottom of a vest bag according to claim 1, characterized in that: A bag-pressing device (500) is provided below the first pneumatic finger (404). The bag-pressing device (500) includes a second belt conveyor (501). A third belt conveyor (502) and a bag-pressing shaft (503) are installed on the frame of the second belt conveyor (501). The belt on the second belt conveyor (501) and the belt on the third belt conveyor (502) rotate synchronously in opposite directions. A rocker arm is installed at one end of the bag-pressing shaft (503). The rocker arm is hinged to the frame of the second belt conveyor (501) through a bag-pressing cylinder (506). Multiple pressing rods (504) are fixedly connected to the bag-pressing shaft (503). A bag-pressing wheel (505) is installed at one end of the pressing rod (504). The bag-pressing cylinder (506) drives the bag-pressing wheel (505) to abut against the conveyor belt of the second belt conveyor (501).

4. The ultrasonic welding machine for the bottom of a vest bag according to claim 1, characterized in that: The bag stacking mechanism (400) also includes a second support plate installed on the top of the frame between the second cylinder (408) and the third cylinder (413). A first rotary cylinder (406) is installed at both ends of the second support plate, and a first folding strip (405) is connected to the first rotary cylinder (406).

5. The ultrasonic welding machine for the bottom of a vest bag according to claim 1, characterized in that: The feeding device (600) also includes a strap straightening device, which includes a bracket installed on the top of the frame, a second telescopic mechanism (603) installed on the bracket, a tensioning plate installed on the telescopic end of the second telescopic mechanism (603), and a second rotary cylinder (604) installed on both ends of the tensioning plate, with a second folding strip (605) connected to the second rotary cylinder (604).

6. The ultrasonic welding machine for the bottom of a vest bag according to claim 1, characterized in that: The bag clamping device includes two guide rods fixedly connected to the moving end of the third moving mechanism (601), a bag baffle is provided between the two guide rods, and second pneumatic fingers (602) are respectively installed at the upper and lower ends of the guide rods.

7. The ultrasonic welding machine for the bottom of a vest bag according to any one of claims 1 to 6, characterized in that: The feeding device (100) also includes a fourth belt conveyor (101) located at the input end of the first belt conveyor (110). A gantry (102) is installed on the frame of the fourth belt conveyor (101). One end of the gantry (102) is located above the first belt conveyor (110). A sixth moving mechanism (103) is installed on the gantry (102). A third telescopic mechanism (104) is installed on the moving end of the sixth moving mechanism (103). A plurality of second suction cups (105) are installed on the lifting end of the third telescopic mechanism (104).

8. The ultrasonic welding machine for the bottom of a vest bag according to any one of claims 1 to 6, characterized in that: Multiple tension bag shells (310) are connected between the front top mold strip (311) and the tension strip (312), and multiple guide shells (314) are connected on the door frame (307).

Images