Hot Stamping Mechanism for Paper Three-dimensional Bag

Abstract

The present invention discloses a hot-stitching mechanism for a paper three-dimensional bag, which includes a frame, a placement shaft for the bag handle paper roll, a paper folding device, a cutting device, a movable clamping device, and a bag handle bending device. The paper folding device has a pair of paper folding wheels (3, 4) arranged vertically. The cutting device has a tool holder (7) and a cutter (8), and the cutter is connected to a driving device. The bending device has a pair of pressing heads (15), and a rotating table (17) corresponding to the pressing heads is arranged below the pressing heads. A pressing block (20) corresponding to the pressing heads and capable of moving up and down is installed on the frame, and an ultrasonic welding head (21) is arranged below the pressing block. It is characterized in that a movable insertion plate (24) is arranged at the upper end of the ultrasonic welding head. For the hot-stitching mechanism with such a structure, the insertion plate can be inserted between the paper of the folded edge of the bag mouth part of the paper bag and the paper body, so that there is a gap between the folded edge part and the paper body, which is convenient for the insertion of the bag handle and makes the welding of the bag handle firm and reliable.

Description

Technical Field

[0001] The present invention relates to a handle ironing mechanism for a three-dimensional bag, and particularly to a handle ironing mechanism for a paper three-dimensional bag. Background Art

[0002] A packaging bag is a bag used to store various supplies, which facilitates the transportation and storage of various supplies during the production and circulation process and is widely used in daily life. The non-woven fabric bag has the advantages of environmental protection and practicality and has been vigorously promoted and used, thus promoting the rapid development of the non-woven fabric bag making machine technology. Such a non-woven fabric bag usually consists of a bag body and a bag handle, and its bag handle is welded to the bag body by an ultrasonic welding device. The machine for welding the bag handle to the bag body is called a handle ironing machine. The applicant has previously applied for a patent application for an invention named "Handle Ironing Machine" with a publication number of CN109732995A, which discloses the following content: A handle ironing machine includes a frame, a bag handle conveying device, a bag handle bending device, a handle ironing device, and a feeding device. The bag handle conveying device clamps the bag handle and sends it to the bag handle bending device. The bending device has a pair of pressing heads, and a rotating table corresponding to the pressing heads is arranged below the pressing heads. The handle ironing device is installed on the frame, and the feeding device moves the fabric to be ironed with a handle to the handle ironing device. It is characterized in that a moving frame for moving the handle to the fabric is arranged on the frame, a pressing head corresponding to the pressing head is arranged on the moving frame, and a supporting plane corresponding to the pressing head is arranged on the moving frame. This structure of the handle ironing machine is suitable for non-woven fabric three-dimensional bags. Since after the bag mouth of the non-woven fabric three-dimensional bag is folded, as long as holes are punched at the folded edge, after the bending device bends the bag handle into a U shape, the two ends of the U-shaped bag handle can be inserted into the punched holes by the movement of the moving frame. Also, because the non-woven fabric has a certain thickness, after the folded edge is punched, there is a certain gap between the folded edge part and the bag body. Therefore, the bag handle will not be blocked when inserted. For a paper three-dimensional bag, after the folded edge at the bag mouth of the three-dimensional bag, the folded edge part basically adheres to the paper of the bag body. Therefore, the method adopted is to cut the paper of the folded edge part and cut open the folded edge part at the position where the bag handle needs to be connected. Although a part is cut open, the folded edge part still adheres to the paper of the bag body. Therefore, the bag handle cannot be directly inserted. Summary of the Invention

[0003] In view of the deficiencies in the background art, the technical problem to be solved by the present invention is to provide a handle ironing mechanism for a paper three-dimensional bag that can form a certain gap between the folded edge part of the bag mouth of the paper three-dimensional bag and the paper part of the bag body for the bag handle to be inserted.

[0004] To this end, the present invention is implemented by the following technical solutions: A hot stamping mechanism for a paper three-dimensional bag, comprising a frame, a bag handle paper roll placement shaft, a paper folding device, a cutting device, a movable clamping device, and a bag handle bending device. The paper folding device has a pair of paper folding wheels arranged vertically. The cutting device has a tool holder and a cutter. The cutter is connected to a driving device. The bending device has a pair of pressing heads. A rotating table corresponding to the pressing heads is provided below the pressing heads. A pressing block corresponding to the pressing heads and capable of moving up and down is installed on the frame. An ultrasonic welding head is provided below the pressing block. It is characterized in that a movable insertion plate is provided at the upper end of the ultrasonic welding head.

[0005] A welding device in which a pressing wheel cooperates with an ultrasonic welding head is provided on the bag handle inlet side of the paper folding wheel.

[0006] A first cylinder is installed on the frame. The cutter is hinged on the tool holder. The cutter is connected to the first cylinder.

[0007] The clamping device has a clamping seat. The clamping seat is installed on a bracket. A second cylinder is installed on the bracket. A clamping plate corresponding to the clamping seat is installed on the push rod of the second cylinder. The bracket is fixedly connected to a synchronous belt. The synchronous belt is driven by a servo motor.

[0008] The pressing block is installed on a lifting frame. The lifting frame is connected to a third cylinder installed on the frame.

[0009] The insertion plate is connected to the push rod of a fourth cylinder. The fourth cylinder is installed on the frame through a connecting plate.

[0010] Movable pressing plates are provided at both ends of the ultrasonic welding head. The insertion plate is arranged between the two pressing plates.

[0011] The ends of the pressing plates are arc-shaped.

[0012] The pressing plates are connected to the push rods of fifth cylinders.

[0013] With this structure of the present invention, after the movable insertion plate is inserted, the paper of the bag mouth hem part can be separated from the paper of the bag body part, so that the bag handle bending device can directly insert the bent bag handle into the separated space. It has the characteristics of simple structure and fast operation, and is particularly suitable for hot stamping of paper three-dimensional bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the relevant details of the present invention in conjunction with the drawings;

[0015] Figure 1 It is a structural diagram of the rear side of the present invention;

[0016] Figure 2Structural diagram of the cutting device, clamping device and bending device provided for the present invention;

[0017] Figure 3 Structural diagram of the installation of the liftable pressure block for the present invention;

[0018] Figure 4 Structural diagram of the plug board and pressure plate provided for the present invention;

[0019] Figure 5 Structural diagram of the connection between the plug board and the fourth cylinder for the present invention;

[0020] Figure 6 Schematic diagram of the paper before ironing the handle being cut into an "L"-shaped cut; Detailed implementation mode

[0021] Referring to the attached drawings, the ironing handle mechanism of this paper three-dimensional bag includes a frame 1, a bag handle paper roll placing shaft 2, a paper folding device, a cutting device, a movable clamping device and a bag handle bending device. The paper folding device has a pair of paper folding wheels 3 and 4 arranged up and down. A welding device in which a pressure wheel 6 cooperates with an ultrasonic welding head 5 is provided on the bag handle inlet side of the paper folding wheels 3 and 4. The whole roll of paper tape 27 for making the bag handle is placed on the bag handle paper roll placing shaft 2. After it is folded in half and pulled between the pressure wheel 6 and the ultrasonic welding head 5, it is ultrasonically welded and then pulled between a pair of paper folding wheels 3 and 4 arranged up and down to flatten its folding line. The cutting device has a knife holder 7 and a cutter 8. The cutter 8 is connected to a driving device. Specifically, a first cylinder 9 is installed on the frame 1. The cutter 8 is hinged on the knife holder 7. The cutter 8 is connected to the first cylinder 9. After the first cylinder 9 acts, the paper tape that has been welded and folded in half can be cut according to the required length. The cut paper tape is the bag handle. The cut bag handle falls onto the clamping device. Among them, the clamping device has a clamping seat 10. The clamping seat 10 is installed on a bracket 11. A second cylinder 12 is installed on the bracket 11. A clamping plate 28 corresponding to the clamping seat 10 is installed on the push rod of the second cylinder 12. The bracket 11 is fixedly connected to a synchronous belt 13. The synchronous belt 13 is driven by a servo motor 14. After the second cylinder 12 works, it drives the clamping plate 28 to move downward to cooperate with the clamping seat 10 to clamp the bag handle. And under the drive of the servo motor 14, it moves the bag handle to the bending device. The bending device has a pair of pressing heads 16. A rotating table 17 corresponding to the pressing heads 16 is provided below the pressing heads 16. For the bag handle sent by the clamping device, the two ends of the bag handle are just placed on the rotating table 17. Driven by a fifth cylinder 15, a pair of pressing heads 16 press the two ends of the bag handle. The rotating table 17 rotates under the drive of a driving motor 18, driving the two ends of the bag handle to be bent, so that the bag handle 34 becomes a "U"-shaped structure. A pressure block 20 corresponding to the pressing heads 16 that can move up and down is installed on the frame 1. The pressure block 20 is installed on a lifting frame 19. The lifting frame 19 is connected to a third cylinder 22 installed on the frame 1. An ultrasonic welding head 21 is provided below the pressure block 20. A movable plug board 24 is arranged at the upper end of the ultrasonic welding head 21. The plug board 24 is connected to the push rod of a fourth cylinder 25. The fourth cylinder 25 is installed on the frame 1 through a connecting plate 26.Both ends of the ultrasonic welding head 21 are provided with pressing plates 23 that can move up and down. The insertion plate 24 is arranged between the two pressing plates 23. Specifically, the pressing plates 23 are connected to the push rods of the fifth cylinders 28 installed on the connecting plate 26. After the paper bag body is sent over, the cut bag opening is located between the ultrasonic welding head 21 and the pressing block 20. The bag opening has a hemmed part, and the middle part of the bag opening is cut into an "L"-shaped incision. At the same time, the fifth cylinders 28 work to push the pressing plates 23 downward, pressing the hems 32 at both ends of the bag opening with the two pressing plates 23. After the fourth cylinders 25 work, the insertion plates 24 are inserted between the hem 33 in the middle part of the bag opening and the bag body, so that there is a certain gap between the hem 33 in the middle part of the bag opening and the bag body. When the bag handle 34 is bent, the two ends of the "U"-shaped bag handle are inserted into the gap between the hem 33 in the middle part of the bag opening and the bag body while being bent. Then, the pressing block 20 moves downward under the action of the third cylinder 22, pressing the hem in the middle part of the bag opening, the bag handle, and the bag body. Then, the ultrasonic welding head works to firmly weld the bag handle to the bag opening. The end of the pressing plate 23 is arranged in an arc shape. This arc-shaped end of the pressing plate is for the convenience of the paper bag body to enter and exit. With this structure of the present invention, the bag handle can be conveniently welded to the paper bag opening, featuring fast and firm welding.

Claims

1. A hot-stamping handle mechanism for a paper three-dimensional bag, comprising a frame (1), a bag handle paper roll placement shaft (2), a paper folding device, a cutting device, a movable clamping device, and a bag handle bending device. The paper folding device has a pair of paper folding wheels (3, 4) arranged vertically. The cutting device has a tool holder (7) and a cutter (8). The cutter (8) is connected to a driving device. The bending device has a pair of pressing heads (16). Below the pressing heads (16), there is a rotating table (17) corresponding to the pressing heads. On the frame (1), there is a vertically movable pressing block (20) corresponding to the pressing heads. Below the pressing block (20), there is an ultrasonic welding head (21). It is characterized in that At the upper end of the ultrasonic welding head (21), there is a movable insertion plate (24). Among them, the bag mouth has a wrapped edge part. After the bag mouth of the paper three-dimensional bag is cut, the middle part of the wrapped edge part of the bag mouth is cut into an "L"-shaped incision. The insertion plate (24) is inserted between the wrapped edge part (33) of the bag mouth and the bag body, so that there is a certain gap between the wrapped edge part of the bag mouth and the bag body. When the bag handle is bent, while the two ends of the "U"-shaped bag handle are bent, they are inserted into the gap between the wrapped edge part (33) of the bag mouth and the bag body. On the bag handle inlet side of the paper folding wheels (3, 4), there is a welding device in which a pressing wheel (6) cooperates with the ultrasonic welding head (5). At both ends of the ultrasonic welding head (21), there are vertically movable pressing plates (23). The insertion plate (24) is arranged between the two pressing plates (23).

2. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 1, It is characterized in that A first cylinder (9) is installed on the frame (1). The cutter (8) is hinged on the tool holder (7), and the cutter (8) is connected to the first cylinder (9).

3. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 1, It is characterized in that The clamping device has a clamping seat (10). The clamping seat (10) is installed on a bracket (11). A second cylinder (12) is installed on the bracket (11). On the push rod of the second cylinder (12), there is a clamping plate (28) corresponding to the clamping seat (10). The bracket (11) is fixedly connected to a synchronous belt (13), and the synchronous belt (13) is driven by a servo motor (14).

4. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 1, It is characterized in that The pressing block (20) is installed on a lifting frame (19), and the lifting frame (19) is connected to a third cylinder (22) installed on the frame (1).

5. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 1, It is characterized in that The insertion plate (24) is connected to the push rod of a fourth cylinder (25), and the fourth cylinder (25) is installed on the frame (1) through a connecting plate (26).

6. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 1, It is characterized in that The ends of the pressing plates (23) are arc-shaped.

7. The hot-stamping handle mechanism for a paper three-dimensional bag according to claim 6, It is characterized in that The pressing plate (23) is connected to the push rod of the fifth cylinder.

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