Automatic bag feeding mechanism of full-automatic bag sealing machine

Abstract

The utility model belongs to the technical field of packaging of bulk materials (such as building materials). An automatic bag feeding mechanism of a full-automatic bag sealing machine comprises a bag hooking device, a guide rail, an air cylinder and a support. The middle of the guide rail is inclined, and a guide hole is formed in the guide rail in the left-right direction. The central axis of the guide hole and the central axis of a guide opening of the bag sealing machine fixedly connected to the supporting frame are located on the same straight line. The lower end part of a lifting pipe of the bag hooking device penetrates through a guide hole in the guide rail; a cylinder body of the air cylinder is fixedly installed on the support, a piston rod of the air cylinder is connected with the lower end of an outer barrel of the bag hooking device through a connecting device, and the outer barrel is located above the guide rail. The bag hooking device comprises a tension spring, a lifting pipe, a hooking plate, a linear bearing, an outer barrel, a connecting rod and a connecting block. The mechanism can realize automatic bag feeding, is time-saving and labor-saving, and improves the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of bulk material (such as building materials, specifically sand) packaging, and particularly relates to an automatic bag feeding mechanism of a full-automatic bag sealing machine. Background Art

[0002] The fully automatic bagging machine includes a bagging machine (or sealing machine), a support frame, and a belt conveyor. The bagging machine (or sealing machine) is installed on the support frame. The belt conveyor is arranged along the bagging machine and the bulk material hopper (such as: the building material is sand, the bulk material hopper is a sand hopper, which is a device for loading sand for construction). The belt conveyor is located below the bagging machine and the outlet of the bulk material hopper. The outlet of the bulk material hopper is equipped with an electric door (which can control the amount of bulk material discharged); the working process is: manually put the mouth of the packaging bag on the outlet of the bulk material hopper, and then press the electric door switch above the outlet of the bulk material hopper by hand, the electric door opens, and the bulk material is discharged. The bucket is filled with bulk material (such as sand), and the electric door switch automatically closes. The 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 starts to move the bag toward the bag sealing machine. At this time, the upper end of the bag needs to be manually adjusted to the eight-shaped guide port of the bag sealing machine (if manual guidance is not used, the bag will have difficulty entering the eight-shaped guide port of the bag sealing machine). At this time, the bag sealing machine starts (the belt conveyor continues to operate at this time), and the bag sealing machine seals the upper end of the bag. The sealed bag is sent out from the output end of the belt conveyor. Manually adjusting the direction of the bag (at the eight-shaped guide port of the bag sealing machine) is time-consuming and labor-intensive, and cannot achieve automatic bag feeding. Summary of the Invention

[0003] The purpose of the utility model is to provide an automatic bag feeding mechanism of a full-automatic bag sealing machine, which can realize automatic bag feeding, save time and labor, and improve work efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the automatic bag feeding mechanism of the fully automatic bag sealing machine includes a bag hooking device, a guide rail, a cylinder, and a bracket; the middle portion of the guide rail is inclined, and a guide hole is opened in the left-right direction of the guide rail, and the guide hole extends from the left end of the guide rail to the right portion of the guide rail; the left end of the guide rail is fixedly connected to the lower right side of the bulk material hopper, and the right end of the guide rail is fixedly connected to the bracket, and the bracket is fixed to the support frame on which the bag sealing machine is installed, and the central axis of the guide hole is in the same straight line as the central axis of the guide port of the bag sealing machine fixedly connected to the support frame; the lower end of the lifting tube of the bag hooking device passes through the guide hole on the guide rail; the cylinder body of the cylinder is fixedly installed on the bracket, and the piston rod of the cylinder is connected to the lower end of the outer cylinder of the bag hooking device by a connecting device, and the outer cylinder is located above the guide rail;

[0005] The bag hooking device includes a tension spring, a lifting tube, a hook plate, a linear bearing, an outer cylinder, a connecting rod, and a connecting block; after the lower end of the lifting tube passes through the linear bearing and the guide hole on the guide rail, the lower end of the lifting tube is connected to the upper end of the connecting block, the linear bearing is installed at the lower part of the inner cavity of the outer cylinder, the upper part of the lifting tube is located in the inner cavity of the outer cylinder, and the left and right sides or the front and back sides of the upper middle part of the outer cylinder are vertically provided with guide openings, and the left and right sides or the front and back sides of the upper end of the lifting tube are provided with guide blocks, which are located in the guide openings; the upper end of the tension spring is hooked on the upper end of the lifting tube, and the lower end of the tension spring passes through the tube hole of the lifting tube and is fixed to the connecting block; the upper end of the connecting rod is fixed to the connecting block; the hook plate is fixed to the lower part of the connecting rod, and a sharp hook is provided on the upper right part of the hook plate.

[0006] Furthermore, a stop shaft is installed on the connecting block, and the stop shaft is located below the guide rail.

[0007] Furthermore, the middle portion of the guide rail is inclined, and its inclination angle α is 135°; the left and right portions of the guide rail are both horizontal.

[0008] Furthermore, the left end of the guide rail is located in a groove at the lower portion of the right side surface of the bulk material hopper, and the lower end portion of the bag hooking device is located on the right side of the outlet of the bulk material hopper.

[0009] Furthermore, the lower end of the lifting tube is provided with an external thread, the upper end of the connecting block is provided with a first internal threaded hole, and the lower end of the lifting tube is screwed into the first internal threaded hole; the width of the connecting block is greater than the width of the guide hole, and the connecting block is located below the guide rail;

[0010] Furthermore, a tension spring fixing screw hole is provided on the upper right side of the connecting block, and the tension spring fixing screw hole is connected to the first internal threaded hole. The lower end of the tension spring is annular. After the ring passes through the first internal threaded hole, it is located in the tension spring fixing screw hole. The tension spring fixing screw is screwed into the tension spring fixing screw hole, and the ring of the lower end of the tension spring is put on the tension spring fixing screw.

[0011] Furthermore, a second internal threaded hole is provided at the lower end of the connecting block, and an external thread is provided at the upper end of the connecting rod, and the upper end of the connecting rod is screwed into the second internal threaded hole; a fixing screw hole is provided at the lower part of the right side of the connecting block, and the fixing screw hole is connected to the second internal threaded hole, and the fixing screw is screwed into the fixing screw hole to tighten the upper end of the connecting rod.

[0012] Furthermore, the lower end of the connecting rod is sleeved with an elastic tube.

[0013] Furthermore, the elastic tube is composed of two sections of rubber hoses, the first section of the rubber hose is sleeved on the lower end portion of the connecting rod, and the second section of the rubber hose is inserted into the lower portion of the first section of the rubber hose.

[0014] Furthermore, a U-shaped steel wire is installed on the left portion of the lower end of the elastic tube.

[0015] The beneficial effects of the utility model are as follows: the bag hooking device, the guide rail and the cylinder are adopted, and the mechanism can realize automatic bag feeding, thereby saving time and labor and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 1 of the utility model in the starting position.

[0017] Figure 2 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 1 of the utility model being at the end and start positions.

[0018] Figure 3 This is a top view of the guide rails of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 1 of the present utility model.

[0019] Figure 4 This is a structural schematic diagram of the bracket of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 1 of the utility model.

[0020] Figure 5 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 1 of the present utility model.

[0021] Figure 6 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 2 of the utility model in the starting position.

[0022] Figure 7 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 2 of the utility model being at the end and start positions.

[0023] Figure 8 This is a top view of the bag hooking device and guide rails of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 2 of the present utility model.

[0024] Figure 9 This is a top view of the guide rails of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 2 of the present utility model.

[0025] Figure 10 This is a top view of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in embodiment 2 of the present utility model.

[0026] Figure 11 This is a structural schematic diagram of the bag hooking device of the automatic bag feeding mechanism of the fully automatic packaging machine in Example 2 of the present utility model.

[0027] In the figure: 1-bag hook device, 2-cylinder, 3-support frame, 4-guide rail, 5-packaging machine, 6-belt transport device, 7-guide port, 8-bulk material hopper outlet, 9-groove, 10-electric door switch, 11-guide hole, 12-connecting device, 13-tension spring, 14-guide port, 15-guide block, 16-inner cavity, 17-lifting tube, 18-tension spring fixing screw, 19-fixing screw, 20-hook plate, 21-pointed hook, 22-push block, 23-linear bearing, 24-outer cylinder, 25-connecting rod, 26-elastic tube, 27-U-shaped steel wire, 28-connecting block, 29-bulk material hopper, 30-packaging bag, 31-blocking shaft, 32-bracket. Figure 5 The arrow in the figure indicates the direction of movement. DETAILED DESCRIPTION

[0028] In order to better understand the present invention, the technical solution of the present invention is further described below in conjunction with embodiments and drawings.

[0029] Example 1:

[0030] like Figure 1-5 As shown, the automatic bag feeding mechanism of the fully automatic bag sealing machine includes a bag hooking device, a guide rail 4, a cylinder 2, and a bracket 32; the middle part of the guide rail 4 is inclined (the inclination angle α is 135°; the left and right parts of the guide rail 4 are both horizontal), and the guide rail 4 is provided with guide holes 11 in the left and right directions (for the convenience of description, Figure 1The left side of the drawing is left, the right side is right, facing the viewer is front, and facing the inside of the paper is back), the guide hole 11 extends from the left end of the guide rail 4 to the right part of the guide rail 4; the left end of the guide rail 4 is fixedly connected to the lower part of the right side surface of the bulk material hopper (in this embodiment, a groove is provided at the lower part of the right side surface of the bulk material hopper, and the left end of the guide rail 4 is located in the groove. The purpose of providing the groove is to make the lower end of the bag hooking device as close to the outlet of the bulk material hopper as possible, and the upper end of the packaging bag can cover the outlet of the bulk material hopper and the lower end of the bag hooking device; the lower end of the bag hooking device is located on the right side of the outlet of the bulk material hopper), the right end of the guide rail 4 is fixedly connected to the bracket 32, and the bracket 32 ​​is fixed on the support frame on which the packaging machine is installed. The central axis of the guide hole 11 (along the left and right directions) is fixedly connected The central axes of the guide openings of the bag closing machine connected to the support frame are aligned in a straight line (the guide openings are in an "eight" shape, with the wide end on the left; the portion of the bag to be sealed enters the bag closing machine through the guide openings); the lower end of the lifting tube 17 of the bag hooking device passes through the guide hole 11 on the guide rail 4 (the bag hooking device can move left and right along the guide hole 11; when the lifting tube 17 reaches the right end of the guide hole 11, the sharp hook 21 of the bag hooking device is located in the guide opening of the bag closing machine); the cylinder body of the cylinder 2 is fixedly mounted on the bracket 32, and the piston rod of the cylinder 2 is connected to the lower end of the outer cylinder 24 of the bag hooking device by the connecting device 12 (the piston rod of the cylinder 2 can be threadedly connected to the connecting device 12, or the connecting device 12 can be welded to the outer cylinder 24), and the outer cylinder 24 is located above the guide rail 4;

[0031] The bag hooking device includes a tension spring (spring) 13, a lifting tube 17, a hook plate 20, a linear bearing 23, an outer cylinder 24, a connecting rod 25, and a connecting block 28; after the lower end of the lifting tube 17 (which is a tubular structure) passes through the linear bearing 23 (the lifting tube 17 can move up and down along the linear bearing 23) and the guide hole 11 on the guide rail 4, the lower end of the lifting tube 17 is connected to the upper end of the connecting block 28 (in this embodiment, a stop shaft 31 is installed on the connecting block 28, that is, the stop shaft 31 plays a limiting role, the stop shaft 31 is located below the guide rail 4, and the stop shaft 31 cannot pass through the guide hole 11 upward), the linear bearing 23 is installed at the lower part of the inner cavity of the outer cylinder 24, the upper part of the lifting tube 17 is located in the inner cavity of the outer cylinder 24, and the left and right sides or the front and rear sides of the middle and upper part of the outer cylinder 24 are vertically (up and down) A guide opening 14 is provided on the upper end of the lifting tube 17 (in a direction), and guide blocks 15 are provided on the left and right sides or front and back of the upper end of the lifting tube 17. The guide blocks 15 are located in the guide opening 14 (in addition to guiding, they can also prevent the lifting tube 17 from rotating, ensuring that the sharp hook does not swing and the packaging bag is accurately fed into the eight-shaped guide opening of the packaging machine); the upper end of the tension spring 13 is hooked on the upper end of the lifting tube 17 (a fixed method can also be adopted), and the lower end of the tension spring 13 is fixed to the connecting block 28 after passing through the tube hole of the lifting tube 17 (the function of the tension spring 13 is to pull the lifting tube 17 upward, that is, to reset it); the upper end of the connecting rod 25 is fixed to the connecting block 28; the hook plate 20 is fixed (such as welded) to the lower part of the connecting rod 25, and a sharp hook 21 is provided on the upper right part of the hook plate 20 (in this embodiment, a push block 22 is also provided on the lower right part of the hook plate 20).

[0032] Furthermore, an elastic tube may be sleeved on the lower end of the connecting rod 25 .

[0033] The connection between the left end of the guide rail 4 and the bulk material hopper can be referred to Figure 6-8 .

[0034] Usage: 1. The piston rod of cylinder 2 is extended and the bag hook device is in the starting position (refer to Figure 6-7); manually put the upper end of the packaging bag over the outlet of the bulk material hopper and the lower end of the bag hooking device, and the sharp hook 21 of the bag hooking device hooks the right side of the upper end of the packaging bag; then press the electric door switch above the outlet of the bulk material hopper by hand (the electric door switch can be pressed when the right hand does not move), the electric door opens, the bulk material hopper discharges bulk material (such as sand) to fill the packaging bag, and 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), at this time, the gravity of the packaging bag filled with bulk material (such as sand) overcomes the tension of the tension spring 13, and the lifting tube 17 moves downward; the cylinder 2 works, the piston rod of the cylinder 2 retracts to the right, and the bag hooking device moves to the right along the guide hole 11. When the lifting tube 17 reaches the right end of the guide hole 11, The sharp hook 21 of the bag hooking device is located in the guide port of the bag sealing machine, and the portion of the bag to be sealed is brought into the bag sealing machine through the guide port; the piston rod of the air cylinder 2 extends to the left, and the lower end of the bag hooking device moves upward {(the sharp hook 21 of the bag hooking device is lifted upward and away from the bag}, while the bag sealing machine (or sealing machine) and the belt conveyor are in operation. The belt conveyor is in operation to transport the bag toward the bag sealing machine, and the bag sealing machine seals the upper end of the bag. The sealed bag is then sent out from the output port of the belt conveyor. 2. The piston rod of the air cylinder 2 continues to extend to the left until the lifting tube 17 reaches the left end starting point (starting position) of the guide hole 11. 3. Repeat steps 1 and 2. This mechanism can realize automatic bag feeding, saving time and effort, and improving work efficiency. According to the utility model, one person can pack 11 bags per minute, while the existing one can only pack 7-8 bags per minute. In addition, the utility model is easy to maintain.

[0035] Example 2:

[0036] like Figure 6-11 As shown, the automatic bag feeding mechanism of the fully automatic bag sealing machine includes a bag hooking device 1, a guide rail 4, and a cylinder 2; the middle part of the guide rail 4 is inclined (the inclination angle α is 135°; the left and right parts of the guide rail 4 are both horizontal), and the guide rail 4 has guide holes 11 in the left and right directions (for the convenience of description, Figure 6The left side is left and the right side is right), the guide hole 11 extends from the left end of the guide rail 4 to the right part of the guide rail 4; the left end of the guide rail 4 is fixedly connected to the lower right side surface of the bulk material hopper 29 (in this embodiment, a groove 9 is provided at the lower right side surface of the bulk material hopper 29, and the left end of the guide rail 4 is located in the groove 9. The purpose of providing the groove 9 is to make the lower end of the bag hooking device 1 as close to the outlet 8 of the bulk material hopper as possible, and the upper end of the packaging bag 30 can cover the outlet 8 of the bulk material hopper and the lower end of the bag hooking device 1; the lower end of the bag hooking device 1 is located on the right side of the outlet 8 of the bulk material hopper), the right end of the guide rail 4 is fixedly connected to the bracket, and the bracket is fixed on the support frame 3 on which the packaging machine is installed. The central axis of the guide hole 11 The line (in the left-right direction) is in a straight line with the central axis of the guide opening 7 of the bag closing machine 5 fixedly connected to the support frame 3 (the guide opening 7 is an eight-shaped guide opening, with the left side being the large opening; the portion of the packaging bag 30 to be sealed enters the bag closing machine 5 through the guide opening 7); the lower end of the lifting tube 17 of the bag hooking device 1 passes through the guide hole 11 on the guide rail 4 (the bag hooking device 1 can move left and right along the guide hole 11; when the lifting tube 17 reaches the right end of the guide hole 11, the sharp hook 21 of the bag hooking device 1 is located in the guide opening 7 of the bag closing machine 5); the cylinder body of the cylinder 2 is fixedly mounted on the bracket, and the piston rod of the cylinder 2 is connected to the lower end of the outer cylinder 24 of the bag hooking device 1 by the connecting device 12, and the outer cylinder 24 is located above the guide rail 4;

[0037] The bag hooking device 1 includes a tension spring (spring) 13, a lifting tube 17, a hook plate 20, a linear bearing 23, an outer cylinder 24, a connecting rod 25, an elastic tube 26, and a connecting block 28; after the lower end of the lifting tube 17 (which is a tubular structure) passes through the linear bearing 23 (the lifting tube 17 can move up and down along the linear bearing 23) and the guide hole 11 on the guide rail 4, the lower end of the lifting tube 17 is connected to the upper end of the connecting block 28 (this embodiment adopts a threaded connection: the lower end of the lifting tube 17 is provided with an external thread, and the upper end of the connecting block 28 is provided with a first internal threaded hole, and the lower end of the lifting tube 17 is screwed into the first internal threaded hole; the width of the connecting block 28 is greater than the width of the guide hole 11, that is, the connecting block 28 also plays a limiting role, and the connecting block 28 is located below the guide rail 4, and the connecting block 28 cannot pass through the guide hole 1 upward 1), the linear bearing 23 is installed in the lower part of the inner cavity 16 of the outer cylinder 24, the upper part of the lifting tube 17 is located in the inner cavity 16 of the outer cylinder 24, and the left and right sides or the front and rear sides of the middle and upper part of the outer cylinder 24 are vertically (up and down) provided with guide openings 14, and the upper end of the lifting tube 17 is provided with guide blocks 15 on the left and right sides or front and back. The guide blocks 15 are located in the guide opening 14 (in addition to playing a guiding role, they can also prevent the lifting tube 17 from rotating, ensuring that the sharp hook does not swing and accurately delivering the packaging bag 30 to the eight-shaped guide opening of the packaging machine); the upper end of the tension spring (spring) 13 is hooked on the upper end of the lifting tube 17 (a fixed method can also be used), and the lower end of the tension spring 13 passes through the tube hole of the lifting tube 17 and is fixed to the connecting block 28 (the function of the tension spring 13 is to pull the lifting tube 17 upward, that is, reset it).The present embodiment adopts: a tension spring fixing screw hole is provided on the upper right side surface of the connecting block 28, the tension spring fixing screw hole is connected to the first internal threaded hole, the lower end of the tension spring is annular, and after the annular shape passes through the first internal threaded hole, it is located in the tension spring fixing screw hole, and the tension spring fixing screw 18 is screwed into the tension spring fixing screw hole, and the annular shape of the lower end of the tension spring is sleeved on the tension spring fixing screw 18, thereby fixing the tension spring 13; adopting this structure, the hook bag device 1 is easy to assemble and maintain); the upper end of the connecting rod 25 is fixed to the connecting block 28 (the present embodiment adopts: the lower end of the connecting block 28 is provided with a second internal threaded hole or jack, the upper end of the connecting rod 25 is provided with an external thread, and the upper end of the connecting rod 25 is screwed into the second internal threaded hole; the lower right side surface of the connecting block 28 is provided with a fixing screw hole, the fixing screw hole is connected to the second internal threaded hole, and the fixing screw 19 is screwed into the fixing screw hole to fix the upper end of the connecting rod 25 fastening; adopting this structure, the bag hook device 1 is easy to assemble and maintain); the lower end of the connecting rod 25 is covered with an elastic tube 26 (in this embodiment, the elastic tube 26 is composed of two sections of rubber hoses (or rubber hoses), the first section of the rubber hose (or rubber hose) is covered with the lower end of the connecting rod 25, and the second section of the rubber hose (or rubber hose) is inserted into the lower part of the first section of the rubber hose; the key to making the sealing line of the packaging bag 30 straight is the use of the elastic tube 26. In the later stage of sealing, the upper end of the packaging bag 30 can be supported to the left. When the packaging bag 30 is almost closed, the elastic tube 26 can be withdrawn from the upper end of the packaging bag 30; in this embodiment, a U-shaped steel wire 27 is further installed at the left part of the lower end of the elastic tube 26); the hook plate 20 is fixed (e.g., welded) to the lower part of the connecting rod 25, and a sharp hook 21 is provided at the upper right part of the hook plate 20 (in this embodiment, a push block 22 is also provided at the lower right part of the hook plate 20).

[0038] Use: 1. Figure 6As shown, the piston rod of the air cylinder 2 is extended, and the bag hooking device is in the starting position; the upper end of the packaging bag 30 is manually covered over the outlet 8 of the bulk material hopper and the lower end of the bag hooking device 1, and the sharp hook 21 of the bag hooking device 1 is hooked on the right side of the upper end of the packaging bag 30; then the electric door switch 10 above the outlet of the bulk material hopper is pressed by hand (the position where the electric door switch 10 can be pressed when the right hand does not move), the electric door opens, the bulk material hopper discharges bulk material (such as sand) to fill the packaging bag, and the electric door switch automatically closes; the bag filled with bulk material The bag of bulk material (such as sand) falls onto the belt of the belt conveyor (the belt conveyor can be controlled by a control circuit). At this time, the gravity of the bag filled with bulk material (such as sand) overcomes the tension of the tension spring 13, and the lifting tube 17 moves downward; the cylinder 2 works, and the piston rod of the cylinder 2 retracts to the right, carrying the bag hooking device 1 to move to the right along the guide hole 11. When the lifting tube 17 reaches the right end of the guide hole 11, the sharp hook 21 of the bag hooking device 1 is located in the guide port 7 of the bag sealing machine 5, and the sealing portion of the bag 30 is brought into the guide port 7 through the guide port 7. into the packaging machine 5; the piston rod of the cylinder 2 extends to the left, and the lower end of the bag hook device 1 moves upward {(the sharp hook 21 of the bag hook device 1 is lifted upward and leaves the packaging bag 30; the lower end of the elastic tube 26 is lower than the hook plate 20 (the sharp hook 21 and the push block 22), that is, the lower end of the elastic tube 26 finally leaves the upper end of the packaging bag 30}, and at the same time, the packaging machine (or sealing machine) and the belt conveyor work, and the belt conveyor works to transport the packaging bag toward the packaging machine, and the packaging machine seals the upper end of the packaging bag. The elastic tube 26 can lift the upper end of the packaging bag 30 in the late sealing stage. 1. Hold the upper end of the bag 30 to the left. Just before the bag 30 is sealed, the elastic tube 26 can be withdrawn from the upper end of the bag 30. The sealed bag is then delivered from the output end of the belt conveyor. 2. The piston rod of the cylinder 2 continues to extend to the left until the lifting tube 17 reaches the left end (starting position) of the guide hole 11. 3. Repeat steps 1 and 2. This mechanism enables automatic bag feeding, saving time and effort and improving work efficiency. With this new system, one person can fill 11 bags per minute, while with existing systems, one person can only fill 7-8 bags. Furthermore, this new system is simple to maintain.

[0039] The above description is merely an application example of the present invention and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope of protection of the present invention.

Claims

1. The automatic bag feeding mechanism of the fully automatic bag sealing machine is characterized by: The invention comprises a bag hooking device, a guide rail (4), a cylinder (2), and a bracket (32); the middle portion of the guide rail (4) is inclined, and a guide hole (11) is opened in the left and right directions of the guide rail (4), and the guide hole (11) extends from the left end of the guide rail (4) to the right portion of the guide rail (4); the left end of the guide rail (4) is fixedly connected to the lower right side of the bulk material hopper, and the right end of the guide rail (4) is fixedly connected to the bracket (32), and the bracket (32) is fixed to a support frame on which a bag sealing machine is installed. The central axis of the guide hole (11) is aligned with the central axis of the guide opening of the bag sealing machine fixedly connected to the support frame; the lower end of the lifting pipe (17) of the bag hooking device passes through the guide hole (11) on the guide rail (4); the cylinder body of the cylinder (2) is fixedly mounted on the bracket (32), and the piston rod of the cylinder (2) is connected to the lower end of the outer cylinder body (24) of the bag hooking device by a connecting device (12), and the outer cylinder body (24) is located above the guide rail (4); The bag hooking device comprises a tension spring (13), a lifting tube (17), a hook plate (20), a linear bearing (23), an outer cylinder (24), a connecting rod (25), and a connecting block (28); after the lower end of the lifting tube (17) passes through the linear bearing (23) and the guide hole (11) on the guide rail (4), the lower end of the lifting tube (17) is connected to the upper end of the connecting block (28), the linear bearing (23) is installed at the lower part of the inner cavity of the outer cylinder (24), the upper part of the lifting tube (17) is located in the inner cavity of the outer cylinder (24), and the outer cylinder (24) The left and right sides or the front and rear sides of the upper middle part of the lifting tube (17) are provided with guide openings in the vertical direction, the upper end of the lifting tube (17) is provided with guide blocks (15) on the left and right sides or the front and rear sides, and the guide blocks (15) are located in the guide openings; the upper end of the tension spring (13) is hooked on the upper end of the lifting tube (17), and the lower end of the tension spring (13) passes through the pipe hole of the lifting tube (17) and is fixed to the connecting block (28); the upper end of the connecting rod (25) is fixed to the connecting block (28); the hook plate (20) is fixed to the lower part of the connecting rod (25), and the upper right part of the hook plate (20) is provided with a sharp hook (21).

2. The automatic bag feeding mechanism of the fully automatic bag sealing machine according to claim 1, characterized in that: A stop shaft (31) is mounted on the connecting block (28), and the stop shaft (31) is located below the guide rail (4).

3. The automatic bag feeding mechanism of the fully automatic bag sealing machine according to claim 1, characterized in that: The middle portion of the guide rail (4) is inclined, and its inclination angle α is 135°; the left and right portions of the guide rail (4) are both horizontal.

4. The automatic bag feeding mechanism of the fully automatic bag sealing machine according to claim 1, characterized in that: The left end of the guide rail (4) is located in a groove (9) at the lower right side of the bulk material hopper (29), and the lower end of the bag hooking device is located on the right side of the outlet of the bulk material hopper.

5. The automatic bag feeding mechanism of the fully automatic bag sealing machine according to claim 1, characterized in that: The lower end of the connecting rod is sleeved with an elastic tube.

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