Bag hooking and pulling device in full-automatic bag sewing assembly line

Abstract

The utility model belongs to the technical field of bag feeding mechanisms of bag sealing machines. A bag hooking and pulling device in a full-automatic bag sewing assembly line comprises a bag hooking device, a guide rail, an air cylinder and a bag pulling mechanism. The bag pulling device is characterized in that the bag pulling mechanism comprises a first tension spring, a hook, a first shaft, a swing rod, an upper pulling plate, a lower pulling plate, a clamping block, a stop block, a convex ring, a silica gel rod, a second shaft, a first bearing and a second bearing; the first shaft, the second shaft, the upper pulling plate and the lower pulling plate are all located on the rear side of the bulk material hopper, the first shaft is located above the second shaft, and the left end and the right of the first shaft are each provided with a first bearing. The right end of the first shaft is fixedly connected with a hook, the rear end of the first tension spring is fixedly connected with the upper end of the hook, and the front end of the first tension spring is fixedly connected with the front portion of the right side face of the bulk material hopper. According to the device, after the outlet of the bulk material hopper is sleeved with the upper end opening of the packaging bag, the packaging bag is pulled in the front-back direction through the hook needle and the convex ring, the bag pulling effect is good, sealing is convenient, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of bag feeding mechanism of sealing machine, specifically relating to a bag hooking and bag pulling device in a fully automatic bag sewing production line. Background Technology

[0002] The bag-sealing production line includes a bag-sealing machine (or sealing machine, bag-sewing machine), a support frame, and a belt conveyor. The bag-sealing machine is mounted on the support frame. The belt conveyor is arranged along the direction of the bag-sealing machine and the bulk material hopper (e.g., if the building material is sand, the bulk material hopper is a sand hopper, a device used to hold sand for construction). The belt conveyor is located below the outlet of the bag-sealing machine and the bulk material hopper. The outlet of the bulk material hopper is equipped with an electric gate (which can control the amount of bulk material discharged). The working process is: the bag is manually placed over the bulk material hopper. At the outlet of the hopper, manually press the electric door switch above the outlet of the bulk material hopper. The electric door opens, and the bulk material hopper discharges bulk material (such as sand) to fill the packaging bag. The electric door switch closes automatically. The packaging bag filled with bulk material (such as sand) falls onto the belt of the belt conveyor (the belt conveyor can be controlled by a control circuit). The belt conveyor works to move the packaging bag towards the sealing machine. The sealing machine seals the top end of the packaging bag, and the sealed packaging bag is sent out from the output end of the belt conveyor.

[0003] Chinese Patent Application No. 202411406442.6 discloses an automatic bag feeding mechanism for a fully automatic sealing machine, which employs a bag hook device, guide rail, and cylinder. This mechanism can achieve automatic bag feeding, saving time and labor and improving work efficiency. However, it has the following shortcomings: after the upper end of the packaging bag is covered with the outlet of the bulk material hopper, only the front side of the packaging bag is hooked, while the rear side of the packaging bag lacks a backward pushing force. This causes the upper part of the packaging bag to be sealed to be crooked in the front-back direction, resulting in poor bag pulling effect and inconvenient sealing. Summary of the Invention

[0004] The purpose of this utility model is to provide a bag hooking and bag pulling device for a fully automatic bag sewing production line. After the upper end of the packaging bag is covered with the outlet of the bulk material hopper, the packaging bag is pulled in the front and back direction by the hook and the convex ring. The bag pulling effect is good, the sealing is convenient, and the work efficiency is improved.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bag hooking and bag pulling device for a fully automatic bag sewing production line, comprising a bag hooking device, a guide rail, a cylinder, and a bag pulling mechanism; the middle part of the guide rail is inclined, and a guide hole is opened along the front-rear direction of the guide rail, extending from the rear end of the guide rail to the front end of the guide rail; the rear end of the guide rail is fixedly connected to the lower part of the front side of the bulk material hopper, or the rear end of the guide rail is fixedly connected to the support frame by a connector; the front end of the guide rail is fixedly connected to the support frame by a connector, or the front end of the guide rail is fixedly connected to the sealing... The bag sealing machine is fixedly connected, or the front end of the guide rail is fixedly connected to the cylinder mounting bracket; the cylinder is fixedly connected to the bag sealing machine by the cylinder mounting bracket, or the cylinder is fixedly connected to the support frame by the cylinder mounting bracket; the cylinder is located above the bag sealing machine, and the bag sealing machine is fixedly mounted on the support frame; the central axis of the guide hole is on the same straight line as the central axis of the inlet of the bag sealing machine fixedly connected to the support frame; the sleeve is fitted on the lower part of the lifting tube of the bag hooking device, the piston rod of the cylinder is connected to the sleeve by the connecting device, and the outer cylinder of the bag hooking device is located above the guide rail;

[0006] The bag hooking device includes a second tension spring, a lifting tube, a hook plate, a linear bearing, an outer cylinder, and a connecting block. The lower end of the lifting tube passes through the guide hole on the linear bearing and the guide rail, and then connects to the upper end of the connecting block. The linear bearing is installed in the lower part of the inner cavity of the outer cylinder, and the upper part of the lifting tube is located inside the inner cavity of the outer cylinder. The left and right sides or front and back sides of the upper middle part of the outer cylinder have vertically opened guide openings. The upper end of the lifting tube is provided with guide blocks on the left and right or front and back, and the guide blocks are located in the guide openings. The upper end of the second tension spring hooks onto the upper end of the lifting tube, and the lower end of the second tension spring passes through the tube hole of the lifting tube and is fixed to the connecting block. The upper end of the hook plate is fixed to the lower end of the connecting block, and the upper front part of the hook plate is provided with a hook needle.

[0007] Its features include: a bag-pulling mechanism comprising a first tension spring, a hook, a first shaft, a swing rod, upper and lower pull plates, a locking block, a stop block, a convex ring, a silicone rod, a second shaft, a first bearing, and a second bearing; the first shaft, the second shaft, and the upper and lower pull plates are all located on the rear side of the bulk material hopper, with the first shaft positioned above the second shaft; the left and right ends of the first shaft are respectively equipped with the first bearing, which is fixedly connected to the rear side of the bulk material hopper by a bearing seat; the hook is fixedly connected to the right end of the first shaft; the first tension spring is located on the right side of the bulk material hopper, with its rear end fixedly connected to the upper end of the hook, and its front end fixedly connected to the front part of the right side of the bulk material hopper. The left and right ends of the second shaft are respectively equipped with second bearings. The second bearings are fixedly connected to the rear side of the bulk material hopper by bearing seats. The front end of the upper and lower pull plates is fixedly connected to the second shaft. The upper and lower pull plates have front-to-back sliding holes along the front-to-back direction. The inner wall of the front end of the front-to-back sliding holes is fixedly connected to a locking block. The upper end of the swing rod is fixedly connected to the left side of the first shaft. After the lower end of the swing rod passes through the front-to-back sliding holes on the upper and lower pull plates, the lower end of the swing rod is inserted into the connecting hole of the upper part of the silicone rod. The lower end of the silicone rod is fixedly connected to a convex ring, which faces the rear side of the lower end of the silicone rod. A stop block is fixed to the upper part of the swing rod, and the front end of the locking block abuts against the rear end of the stop block.

[0008] Furthermore, a limit rod is installed on the lower front side of the outer cylinder of the hook bag device.

[0009] The beneficial effects of this utility model are: 1. After the upper end of the packaging bag is covered with the outlet of the bulk material hopper, the bag is pulled in the front-to-back direction by the hook and the convex ring, resulting in good bag-pulling effect, convenient sealing, and improved work efficiency. 2. It can achieve fully automatic bag sewing simply and effectively. 3. The bag hook device of this utility model is applicable to medium and large-sized bag sealing machines (bag sewing machines). Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the hook bag device in the starting position of a fully automatic bag sewing production line according to the present invention (the support frame is not shown in the figure).

[0011] Figure 2 for Figure 1 Right view of the sealing machine and hook bag device.

[0012] Figure 3 for Figure 1 Top view of the center guide rail.

[0013] Figure 4 for Figure 1 A schematic diagram of the hook bag device.

[0014] Figure 5 for Figure 1Right view of the central bag-pulling mechanism.

[0015] Figure 6 for Figure 1 Top view of the upper and lower pull plates.

[0016] Figure 7 This is a schematic diagram showing the position of the silicone rod after the upper and lower pull plates are pulled upwards.

[0017] Figure 8 This is a schematic diagram of the hook bag device in the starting position of the end point of a fully automatic bag sewing production line according to the present invention (the support frame is not shown in the figure).

[0018] In the diagram: 1-Belt conveyor, 2-Bag sealing machine, 3-Bag sealing machine inlet, 4-Bulk material hopper, 5-Bulk material hopper outlet, 6-Cylinder, 7-Guide rail, 8-Cylinder piston rod, 9-Limit rod, 10-Bag hook device, 11-First tension spring, 12-Hook, 13-First shaft, 14-Swing rod, 15-Upper and lower pull plates, 16-Clamping block, 17-Stop block, 18-Protruding ring, 19-Silicone rod. 20-Second shaft, 21-Support frame, 22-Guide hole, 23-Linear bearing, 24-Second tension spring, 25-Inner cavity, 26-Lifting tube, 27-Outer cylinder, 28-Tube sleeve, 29-Connecting block, 30-Hook plate, 31-Hook needle, 32-Push block, 33-Front-back sliding hole, 34-First bearing, 35-Second bearing, 36-Guide port, 37-Guide block, 38-Switch, 39-Packaging bag. The arrows in the diagram indicate the direction of movement. Detailed Implementation

[0019] To better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the embodiments and accompanying drawings.

[0020] Example 1:

[0021] like Figure 1-8 As shown, a bag hooking and bag pulling device in a fully automatic bag sewing production line includes a bag hooking device 10, a guide rail 7, a cylinder 6, and a bag pulling mechanism; the middle part of the guide rail 7 is inclined (the inclination angle α is 130-140°; the front and rear ends of the guide rail 7 are horizontal), and the guide rail 7 has guide holes 22 along the front-back direction (for ease of description, ...). Figure 1 In the image, the left side is front, the right side is back, the side facing the viewer is left, and the side facing inwards is right; correspondingly, Figure 5(Left side is left, right side is right), guide hole 22 extends from the rear end of guide rail 7 to the front end of guide rail 7; the rear end of guide rail 7 is fixedly connected to the lower front side of bulk material hopper 4, or the rear end of guide rail 7 is fixedly connected to support frame 21 by connector; the front end of guide rail 7 is fixedly connected to support frame 21 by connector, or the front end of guide rail 7 is fixedly connected to sealing machine 2, or the front end of guide rail 7 is fixedly connected to cylinder mounting bracket; cylinder 6 is fixedly connected to sealing machine 2 by cylinder mounting bracket, or cylinder 6 is fixedly connected to support frame 21 by cylinder mounting bracket; cylinder 6 is located above sealing machine 2, sealing machine (or sewing machine) 2 is fixedly mounted on support frame 21; the central axis of guide hole 22 (in the front-rear direction) is on the same straight line as the central axis of inlet 3 of sealing machine fixedly connected to support frame (sealing machine) A guide mechanism can be provided at the rear of the inlet 3. The guide mechanism is a figure-eight shaped guide opening, with a large opening at the rear and a small opening at the front. The guide allows the part of the packaging bag to be sealed to enter the sealing machine. The lower end of the lifting tube 26 of the bag hooking device 10 passes through the guide hole 22 on the guide rail 7 (the bag hooking device can move back and forth along the guide hole 22; when the lifting tube 26 reaches the front end of the guide hole 22, the hook needle 31 of the bag hooking device is located inside the inlet 3 of the sealing machine). The sleeve 28 is fitted on the lower part of the lifting tube 26 of the bag hooking device 10 (the lower end of the lifting tube 26 passes through the sleeve 28, and the lower part of the lifting tube 26 can slide up and down inside the sleeve 28). The piston rod 8 of the cylinder is connected to the sleeve 28 by a connecting device (it can be hinged, and the piston rod of the cylinder 6 can be connected to the connecting device by a thread). The outer cylinder 27 of the bag hooking device 10 is located above the guide rail 7.

[0022] The bag hooking device 10 includes a second tension spring 24, a lifting tube 26, a hook plate 30, a linear bearing 23, an outer cylinder 27, and a connecting block 29. The lower end of the lifting tube 26 (which is a tubular structure) passes through the linear bearing 23 (the lifting tube 26 can move up and down along the linear bearing 23) and the guide hole 22 on the guide rail 7. The lower end of the lifting tube 26 is then connected to the upper end of the connecting block 29 (in this embodiment, a stop shaft is installed on the connecting block 29, which serves as a limit; the stop shaft is located below the guide rail 7 and cannot pass upward through the guide hole 22). The linear bearing 23 is installed in the lower part of the inner cavity of the outer cylinder 27. The upper part of the lifting tube 26 is located in the inner cavity 25 of the outer cylinder 27. The left and right sides or the front and back sides of the upper middle part of the outer cylinder 27 are vertically (up and down). The lifting tube 26 has a guide opening 36. The upper end of the lifting tube 26 is provided with guide blocks 37 on the left, right or front and back. The guide blocks 37 are located inside the guide opening 36 (in addition to guiding, they can also prevent the lifting tube 26 from rotating, ensuring that the hook 31 does not swing and accurately feeds the packaging bag into the inlet 3 of the sealing machine). The upper end of the second tension spring 24 is hooked on the upper end of the lifting tube 26 (or fixed). The lower end of the second tension spring 24 passes through the tube hole of the lifting tube 26 and is fixed to the connecting block 29 (the function of the second tension spring 24 is to pull the lifting tube 26 upward, i.e., reset). The upper end of the hook plate 30 is fixed (e.g., welded) to the lower end of the connecting block 29. The upper front part of the hook plate 30 is provided with a hook 31 (in this embodiment, the lower right part of the hook plate 30 is also provided with a push block 32).

[0023] The bag-pulling mechanism includes a first tension spring 11, a hook 12, a first shaft 13, a swing rod 14, upper and lower pull plates 15, a locking block 16, a stop block 17, a convex ring 18, a silicone rod 19, a second shaft 20, a first bearing 34, and a second bearing 35. The first shaft 13, the second shaft 20, and the upper and lower pull plates 15 are all located on the rear side of the bulk material hopper 4. The first shaft 13 is located above the second shaft 20. The left and right ends of the first shaft 13 are respectively equipped with first bearings 34. The first bearings 34 are fixedly connected to the rear side of the bulk material hopper 4 by bearing seats (i.e., the first shaft 1). 3 (rotatable); A hook 12 is fixedly connected to the right end of the first shaft 13 (the hook 12 is perpendicular to the first shaft 13 and is located on the rear right side of the bulk material hopper 4), the first tension spring 11 is located on the right side of the bulk material hopper 4, the rear end of the first tension spring 11 is fixedly connected to the upper end of the hook 12, and the front end of the first tension spring 11 is fixedly connected to the front of the right side of the bulk material hopper 4 (the elastic force of the first tension spring 11 drives the upper end of the hook 12 to rotate forward, thereby driving the silicone rod 19 to rotate backward); the left end of the second shaft 20, A second bearing 35 is installed at the right end. The second bearing 35 is fixedly connected to the rear side of the bulk material hopper 4 by a bearing seat (the second bearing 35 is rotatable, driving the upper and lower pull plates 15 to rotate). The front end of the upper and lower pull plates 15 is fixedly connected to the second shaft 20. The upper and lower pull plates 15 have a front-to-back sliding hole 33 along the front-to-back direction. A locking block 16 is fixedly connected to the inner wall of the front end of the front-to-back sliding hole 33. The upper end of the swing rod 14 is fixedly connected to the left side of the first shaft 13 (if welded, the swing rod 14 is located below the first shaft 13). The lower end of the swing rod 14... After the end passes through the front-to-back sliding hole 33 on the upper and lower pull plates 15, the lower end of the swing rod 14 is inserted into the upper connection hole of the silicone rod 19 (that is, the silicone rod 19 is connected to the lower end of the swing rod 14, the material of the silicone rod 19 is silicone, and the silicone rod 19 is slightly soft). The lower end of the silicone rod 19 is fixedly connected to a convex ring 18, which faces the rear side of the lower end of the silicone rod 19. The upper part of the swing rod 14 is fixed with a stop block 17, and the front end of the locking block 16 abuts against the rear end of the stop block 17 (at this time, the convex ring 18 is located below the outlet 5 of the bulk material hopper).

[0024] Furthermore, a limiting rod 9 is installed on the lower front side of the outer cylinder 27 of the bag hooking device 10. When the hook needle 31 of the bag hooking device is located inside the inlet of the sealing machine, the front end of the limiting rod 9 presses against the housing of the cylinder.

[0025] Usage: 1. When the piston rod of cylinder 6 extends, the bag hook device is in the initial position (refer to...). Figure 1At this time, the convex ring 18 is located below the outlet 5 of the bulk material hopper; the upper end of the packaging bag 39 is manually placed over the outlet 5 of the bulk material hopper, the lower end of the bag hooking device, and the lower end of the silicone rod 19 of the bag pulling mechanism (including the convex ring 18). The hook needle 31 of the bag hooking device hooks the front side inside the upper end of the packaging bag; then the upper and lower pull plates 15 are lifted upwards by hand, the locking block 16 disengages from the stop block 17, and the lower end of the silicone rod 19 (including the convex ring 18) swings backwards under the action of the first tension spring 11, pressing against the rear end inside the packaging bag 39 (at this time, the packaging bag 39 is pulled in the front-to-back direction by the hook needle 31 and the convex ring 18), and the upper and lower pull plates 15 are lifted upwards. When starting, switch 38 is turned on (switch 38 is located above the upper and lower pull plates 15), the electric door at the outlet 5 of the bulk material hopper opens, and the bulk material hopper discharges bulk material (such as sand) to fill the packaging bag. The electric door switch automatically closes (delay switch, automatically closes after a certain period of time); the packaging bag filled with bulk material (such as sand) falls onto the belt of the belt conveyor 1 (the belt conveyor can be controlled by a control circuit). At this time, under the action of the weight of the packaging bag filled with bulk material (such as sand), it overcomes the tension of the second tension spring 24, and the lifting tube 26 moves downward; the cylinder 6 works, the piston rod of the cylinder 6 retracts forward, and the hook... The bag-hooking device moves forward along the guide hole 22 (i.e., the hook 31 hooks the front side of the upper port of the packaging bag and moves forward). At this time, the hook 31 and the convex ring 18 pull the packaging bag 39 straight forward in the front-back direction for a certain distance, and then the convex ring 18 leaves the upper port of the packaging bag 39 (the function of the bag-pulling mechanism is to pull the packaging bag 39 straight forward in the front-back direction for a certain distance, which facilitates sealing). When the lifting tube 26 reaches the front end of the guide hole 22, the hook 31 of the bag-hooking device is located in the inlet of the sealing machine (when a guide port is used, the part of the packaging bag to be sealed enters the sealing machine through the guide port). The piston rod of the cylinder 6 extends backward, and the bag-hooking device... The lower end moves upward (the hook 31 of the bag hook device lifts upward and leaves the packaging bag), while the sealing machine (or sewing machine, sealing machine) and belt conveyor work. The belt conveyor moves the packaging bag towards the sealing machine, which seals the upper end of the packaging bag. The sealed packaging bag is then sent out from the output end of the belt conveyor. 2. Press the upper and lower pull plates 15 downward by hand, and the locking block 16 blocks the stop block 17; the piston rod of the cylinder 6 continues to extend backward until the lifting tube 26 reaches the rear end starting point (starting position) of the guide hole 22. 3. Repeat steps 1 and 2; automatic bag feeding can be achieved, saving time and effort and improving work efficiency.

[0026] The above description is only an application embodiment of this utility model, and of course it cannot be used to limit the scope of the rights of this utility model. Therefore, the equivalent changes made in accordance with the scope of the patent application of this utility model are still within the protection scope of this utility model.

Claims

1. A bag hooking and bag pulling device for a fully automatic bag sewing production line, comprising a bag hooking device (10), a guide rail (7), a cylinder (6), and a bag pulling mechanism; the middle part of the guide rail (7) is inclined, and the guide rail (7) has a guide hole (22) in the front-rear direction, the guide hole (22) extending from the rear end of the guide rail (7) to the front end of the guide rail (7); the rear end of the guide rail (7) is fixedly connected to the lower part of the front side of the bulk material hopper (4), or the rear end of the guide rail (7) is fixedly connected to the support frame (21) by a connector; the front end of the guide rail (7) is fixedly connected to the support frame (21) by a connector, or the front end of the guide rail (7) is fixedly connected to the sealing machine (2), or the front end of the guide rail (7) is fixedly connected to the sealing machine (2). The end is fixedly connected to the cylinder mounting bracket; the cylinder (6) is fixedly connected to the sealing machine (2) by the cylinder mounting bracket, or the cylinder (6) is fixedly connected to the support frame (21) by the cylinder mounting bracket; the cylinder (6) is located above the sealing machine (2), and the sealing machine (2) is fixedly installed on the support frame (21); the central axis of the guide hole (22) is on the same straight line as the central axis of the inlet (3) of the sealing machine fixedly connected to the support frame; the sleeve (28) is fitted on the lower part of the lifting tube (26) of the bag hooking device (10), the piston rod (8) of the cylinder is connected to the sleeve (28) by the connecting device, and the outer cylinder (27) of the bag hooking device (10) is located above the guide rail (7); The hooking device (10) includes a second tension spring (24), a lifting tube (26), a hook plate (30), a linear bearing (23), an outer cylinder (27), and a connecting block (29); the lower end of the lifting tube (26) passes through the linear bearing (23) and the guide hole (22) on the guide rail (7), and then the lower end of the lifting tube (26) is connected to the upper end of the connecting block (29). The linear bearing (23) is installed in the lower part of the inner cavity of the outer cylinder (27), and the upper part of the lifting tube (26) is located in the inner cavity (25) of the outer cylinder (27). The upper middle part of the 27) has guide openings (36) on the left and right sides or front and back sides, and the upper end of the lifting tube (26) is provided with guide blocks (37) on the left and right or front and back, and the guide blocks (37) are located in the guide openings (36); the upper end of the second tension spring (24) is hooked on the upper end of the lifting tube (26), and the lower end of the second tension spring (24) passes through the tube hole of the lifting tube (26) and is fixed to the connecting block (29); the upper end of the hook plate (30) is fixed on the lower end of the connecting block (29), and the upper front part of the hook plate (30) is provided with a hook (31); Its features are: The bag-pulling mechanism includes a first tension spring (11), a hook (12), a first shaft (13), a swing rod (14), upper and lower pull plates (15), a locking block (16), a stop block (17), a convex ring (18), a silicone rod (19), a second shaft (20), a first bearing (34), and a second bearing (35). The first shaft (13), the second shaft (20), and the upper and lower pull plates (15) are all located on the rear side of the bulk material hopper (4), with the first shaft (13) located above the second shaft (20). The first shaft (13) has a first bearing (34) installed on its left and right ends respectively. The first bearing (34) is fixedly connected to the rear side of the bulk material hopper (4) by a bearing seat. A hook (12) is fixedly connected to the right end of the first shaft (13). A first tension spring (11) is located on the right side of the bulk material hopper (4). The rear end of the first tension spring (11) is fixedly connected to the upper end of the hook (12). The front end of the first tension spring (11) is fixedly connected to the right side of the bulk material hopper (4). The front part is fixedly connected; the left and right ends of the second shaft (20) are respectively equipped with second bearings (35), the second bearings (35) are fixedly connected to the rear side of the bulk material hopper (4) by bearing seats, the front end of the upper and lower pull plates (15) is fixedly connected to the second shaft (20); the upper and lower pull plates (15) have front and rear sliding holes (33) along the front and rear direction, and the front end of the front sliding hole (33) is fixedly connected to the inner wall surface of the front end; the upper end of the swing rod (14) is connected to the first The left side of the shaft (13) is fixedly connected. After the lower end of the swing rod (14) passes through the front-to-back sliding hole (33) on the upper and lower pull plates (15), the lower end of the swing rod (14) is inserted into the upper connecting hole of the silicone rod (19). The lower end of the silicone rod (19) is fixedly connected with a protruding ring (18), which faces the rear side of the lower end of the silicone rod (19). The upper part of the swing rod (14) is fixed with a stop block (17), and the front end of the locking block (16) presses against the rear end of the stop block (17).

2. The hook and pull bag device in a fully automatic bag sewing production line according to claim 1, characterized in that: A limit rod (9) is installed on the lower front side of the outer cylinder (27) of the bag hook device (10).

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