Paper clamping mechanism for paper bag bottom folding

Abstract

The utility model relates to a paper bag machine, in particular to a paper clamping mechanism for paper bag bottom folding, which comprises a main shaft, a large hub wheel and bottom clamping components, the main shaft is rotatably arranged, the large hub wheel is mounted on the main shaft, a plurality of bottom folding grooves are circumferentially arranged on the large hub wheel, and the bottom clamping components are circumferentially arranged along the large hub wheel and are in one-to-one correspondence with the bottom folding grooves. The bottom clamping assembly comprises a first clamp, a second clamp, a center clamp and a side clamp, the first clamp is located between the second clamp and the center clamp, the first clamp is installed in the bottom folding groove, the second clamp is adjustably arranged in the bottom folding groove in the paper bag conveying direction, and the center clamp is adjustably arranged on the large hub wheel in the paper bag conveying direction; the side clamp is adjustably arranged on the large hub wheel in the axis direction of the main shaft, the center clamp, the second clamp and the side clamp are integrated on the large hub wheel, assembly is convenient and fast, assembly one by one does not need to follow a specific assembly sequence, and the center clamp, the second clamp and the side clamp can be directly adjusted with the first clamp as the reference during adjustment.

Description

Technical Field

[0001] The utility model relates to a paper bag machine, in particular to a paper clamping mechanism for folding the bottom of a paper bag. Background Art

[0002] The existing bottom folding device of a paper bag machine includes a large hub wheel, a central fixture web, a second fixture web and a side clamp web. The large hub wheel, the central fixture web, the second fixture web and the side clamp web are all installed on the main shaft. The large hub wheel is provided with bottom folding grooves along the circumferential direction. The first fixture is installed in the bottom folding grooves. The central fixture, the second fixture and the side clamp are installed on the corresponding webs. When installing, the corresponding webs need to be installed in sequence. For paper bags of different specifications, it is necessary to rotate the central fixture web and the second fixture web for adjustment. The side clamp needs to move the side clamp web along the main shaft. The installation and adjustment are very inconvenient. Summary of the Utility Model

[0003] In view of the technical problems existing in the background art, the utility model aims to provide a paper clamping mechanism for folding the bottom of a paper bag, in which the central fixture, the second fixture and the side clamp are all adjustably arranged on the large hub wheel, and the assembly and adjustment are convenient and fast.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: The paper clamping mechanism for folding the bottom of a paper bag includes a main shaft, a large hub wheel and a bottom clamping assembly. The main shaft is rotatably arranged. The large hub wheel is installed on the main shaft. The large hub wheel is provided with a plurality of bottom folding grooves along the circumferential direction. The bottom clamping assembly is arranged along the circumferential direction of the large hub wheel and corresponds to the bottom folding grooves one by one. The bottom clamping assembly includes a first fixture, a second fixture, a central fixture and a side clamp. The first fixture is located between the second fixture and the central fixture. Among them, the first fixture is installed in the bottom folding groove. The second fixture is adjustably arranged in the bottom folding groove along the paper bag conveying direction. The central fixture is adjustably arranged on the large hub wheel along the paper bag conveying direction. The side clamp is adjustably arranged on the large hub wheel along the axis direction of the main shaft.

[0005] In this scheme, the central fixture, the second fixture and the side clamp are integrated onto the large hub wheel, which is convenient for assembly and does not need to be assembled one by one according to a specific assembly sequence. When adjusting, the central fixture, the second fixture and the side clamp can be directly adjusted with the first fixture as the reference.

[0006] Preferably, the large hub wheel includes a main body part and radial reinforcing ribs. The main body part is provided with a notch for installing the central fixture along the circumferential direction. A plurality of the radial reinforcing ribs are arranged along the circumferential direction of the main body part. The radial reinforcing ribs extend from the center of the main body part to the outer periphery of the main body part.

[0007] In this scheme, the radial reinforcing ribs can increase the integrity and strength of the large hub wheel and make up for the strength reduction caused by the notch setting.

[0008] Preferably, an installation bracket is connected between the radial reinforcing rib and the main body. The installation bracket is provided with an axial chute, and the side clamp is slidably and positionally connected to the axial chute.

[0009] In this solution, the installation bracket can not only be provided with an axial chute for installing the side clamp, but also enhance the connection between the radial reinforcing rib and the main body.

[0010] Preferably, the bottom-folded groove is provided with a first circumferential chute, and the second clamp is connected with an arc-shaped gasket, which is slidably and positionally connected to the first circumferential chute.

[0011] In this solution, the first circumferential chute can guide the adjustment of the second clamp. The second clamp can be directly installed in the bottom-folded groove, and the arc-shaped gasket design enables the adjusted second clamp to adapt to the conveying surface.

[0012] Preferably, the large hub wheel is provided with a second circumferential chute along the circumference. The second circumferential chute is located between adjacent bottom-folded grooves, and the central clamp is slidably and positionally connected to the second circumferential chute.

[0013] In this solution, the second circumferential chute can guide the adjustment of the central clamp.

[0014] Preferably, the central clamp includes a bearing seat. The bearing seat is provided with a protrusion matching the second circumferential chute. The protrusion is equipped with a central lock block. The large hub wheel is also provided with an installation groove for installing the central lock block. The width of the installation groove is greater than the width of the second circumferential chute.

[0015] In this solution, the second circumferential chute guides the adjustment of the central clamp. The central clamp is installed on the large hub wheel from below without affecting the conveying. The width of the installation groove is greater than the width of the second circumferential chute, so that the bottom of the installation groove can support the central lock block.

[0016] The beneficial effect of the present utility model is that the central clamp, the second clamp and the side clamp are integrated on the large hub wheel, and the assembly is convenient. There is no need to assemble them one by one according to a specific assembly sequence. When adjusting, the central clamp, the second clamp and the side clamp can be directly adjusted based on the first clamp. Therefore, the present utility model has substantial characteristics and progress compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following describes the implementation manners of the present utility model, the relevant details and working principles of the embodiments with reference to the drawings.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 2 is a side view of the present utility model.

[0020] Figure 3 is Figure 2 an enlarged view of A in

[0021] Figure 4 is a schematic perspective view of the large hub wheel in the present utility model.

[0022] Figure 5 is a schematic perspective view of the second fixture in the present utility model.

[0023] Figure 6 is a schematic perspective view of the center fixture in the present utility model.

[0024] In the figure: 1, main shaft; 2, large hub wheel; 3, bottom-folded groove; 4, bottom-clamping assembly; 5, first fixture; 6, second fixture; 7, center fixture; 8, side clamp; 9, main body part; 10, radial reinforcing rib; 11, notch; 12, mounting bracket; 13, axial sliding groove; 14, first circumferential sliding groove; 15, arc-shaped gasket; 16, second circumferential sliding groove; 17, bearing seat; 18, protrusion; 19, center locking block; 20, mounting groove. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0027] In the description of the present application, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0028] Refer to the attached Figures 1-3, in the embodiment of this implementation manner, a paper clamping mechanism for the bottom folding of a paper bag includes a main shaft 1, a large hub wheel 2, and a bottom clamping assembly 4. The main shaft 1 is rotatably arranged, the large hub wheel 2 is installed on the main shaft 1, and a plurality of bottom folding grooves 3 are provided along the circumference of the large hub wheel 2. The bottom clamping assembly 4 is arranged along the circumference of the large hub wheel 2 and corresponds to the bottom folding grooves 3 one by one. The bottom clamping assembly 4 includes a first clamp 5, a second clamp 6, a central clamp 7, and a side clamp 8. The first clamp 5 is located between the second clamp 6 and the central clamp 7.

[0029] Among them, the first clamp 5 is installed in the bottom folding groove 3, the second clamp 6 is adjustably arranged in the bottom folding groove 3 along the paper bag conveying direction, the central clamp 7 is adjustably arranged on the large hub wheel 2 along the paper bag conveying direction, and the side clamp 8 is adjustably arranged on the large hub wheel 2 along the axis direction of the main shaft 1.

[0030] In this implementation manner, the axial direction and the radial direction are based on the main shaft 1. The bottom clamping assembly 4 is installed on the large hub wheel 2 without installing corresponding webs on the main shaft 1, which is convenient for assembly. Taking the first clamp 5 as the reference, the second clamp 6 and the central clamp 7 are adjusted along the conveying direction for the change in bag length, and the side clamp 8 is adjusted along the axial direction of the main shaft 1 for the change in bag width. The adjustment method can be sliding adjustment along the chute or changing the installation holes corresponding to the installation, and the methods are diverse.

[0031] See attached Figure 1 , 4, the large hub wheel 2 includes a main body portion 9 and radial reinforcing ribs 10. The main body portion 9 is provided with a notch 11 for installing the central clamp 7 along the circumference. A plurality of the radial reinforcing ribs 10 are arranged along the circumference of the main body portion 9. The radial reinforcing ribs 10 extend from the center of the main body portion 9 to the outer periphery of the main body portion 9. An installation frame 12 is connected between the radial reinforcing ribs 10 and the main body portion 9. The installation frame 12 is provided with an axial chute 13, and the side clamp 8 is slidably and positionally connected with the axial chute 13.

[0032] In this implementation manner, the setting of the radial reinforcing ribs 10 can enhance the load-bearing capacity of the large hub wheel 2. The installation frame 12 is arranged between the radial reinforcing ribs 10 and the main body portion 9, which can effectively support the side clamp 8. Among them, the side clamp 8 includes an installation seat, and the installation seat is provided with holes. The installation seat and the corresponding lock block are firmly connected, and the axial chute 13 is located between the two to achieve sliding and positional connection.

[0033] See attached Figures 4-5 , the bottom folding groove 3 is provided with a first circumferential chute 14, the second clamp 6 is connected with an arc-shaped gasket 15, and the arc-shaped gasket 15 is slidably and positionally connected with the first circumferential chute 14.

[0034] In this embodiment, the arc-shaped gasket 15 is designed such that when the second fixture 6 is installed, it can adapt to the curvature of the first circumferential chute 14. The arc-shaped gasket 15 is fixedly connected to the corresponding locking block, and the corresponding locking block also needs to be designed with a curvature. The first circumferential chute 14 is located between the two, enabling sliding positioning connection. On this basis, a guide block can also be designed on the second fixture 6, and a corresponding guide groove is provided in the bottom folding groove 3 to adjust the adjustment of the second fixture 6.

[0035] See the appendix Figure 4 , 6, the large hub wheel 2 is provided with a second circumferential chute 16 along the circumference. The second circumferential chute 16 is located between adjacent bottom folding grooves 3. The central fixture 7 includes a bearing seat 17. The bearing seat 17 is provided with a protrusion 18 that matches the second circumferential chute 16. The protrusion 18 is equipped with a central locking block 19. The large hub wheel 2 is also provided with an installation groove 20 for installing the central locking block 19. The width of the installation groove 20 is greater than the width of the second circumferential chute 16.

[0036] In this embodiment, the upper surface of the protrusion 18 and the lower surface of the central locking block 19 are both designed with a curvature that matches the second circumferential chute 16. The protrusion 18 extends into the second circumferential chute 16, enabling the second circumferential chute 16 to guide the sliding of the protrusion 18.

[0037] The above is the preferred embodiment of the present invention. It should be noted that the protection scope of the present invention is not limited thereto. For those skilled in the art of this technology, without departing from the technical scope disclosed by the present invention under the premise of the same inventive concept, several improvements, refinements, or equivalent substitutions can also be made, which are also regarded as the protection scope of the present invention.

Claims

1. A paper clamping mechanism for the bottom folding of a paper bag, comprising a main shaft (1) which is rotatably arranged; a large hub wheel (2) which is mounted on the main shaft (1), and a plurality of bottom folding grooves (3) are arranged along the circumference of the large hub wheel (2); a bottom clamping assembly (4) which is arranged along the circumference of the large hub wheel (2) and corresponds to the bottom folding grooves (3) one by one. The bottom clamping assembly (4) includes a first clamp (5), a second clamp (6), a central clamp (7) and a side clamp (8), and the first clamp (5) is located between the second clamp (6) and the central clamp (7); It is characterized in that: the first clamp (5) is installed in the bottom folding groove (3), the second clamp (6) is arranged in the bottom folding groove (3) in an adjustable manner along the paper bag conveying direction, the central clamp (7) is arranged on the large hub wheel (2) in an adjustable manner along the paper bag conveying direction, and the side clamp (8) is arranged on the large hub wheel (2) in an adjustable manner along the axis direction of the main shaft (1).

2. The paper clamping mechanism for the bottom folding of a paper bag according to claim 1, wherein: The large hub wheel (2) includes a main body part (9) and radial reinforcing ribs (10). The main body part (9) is provided with a notch (11) for installing the central clamp (7) along the circumference, and a plurality of the radial reinforcing ribs (10) are arranged along the circumference of the main body part (9), and the radial reinforcing ribs (10) extend from the center of the main body part (9) to the outer periphery of the main body part (9).

3. The paper clamping mechanism for the bottom folding of a paper bag according to claim 2, characterized in that: An installation frame (12) is connected between the radial reinforcing rib (10) and the main body part (9), and the installation frame (12) is provided with an axial sliding groove (13), and the side clamp (8) is slidably and positionally connected with the axial sliding groove (13).

4. A paper clamping mechanism for bottom folding of paper bags according to claim 1, characterized in that: The bottom folding groove (3) is provided with a first circumferential sliding groove (14), the second clamp (6) is connected with an arc-shaped gasket (15), and the arc-shaped gasket (15) is slidably and positionally connected with the first circumferential sliding groove (14).

5. A paper clamping mechanism for the bottom folding of a paper bag according to claim 1, characterized in that: The large hub wheel (2) is provided with a second circumferential sliding groove (16) along the circumference, and the second circumferential sliding groove (16) is located between adjacent bottom folding grooves (3), and the central clamp (7) is slidably and positionally connected with the second circumferential sliding groove (16).

6. The paper clamping mechanism for the bottom folding of a paper bag according to claim 5, characterized in that: The central clamp (7) includes a bearing seat (17), the bearing seat (17) is provided with a protrusion (18) matching the second circumferential sliding groove (16), the protrusion (18) is equipped with a central lock block (19), and the large hub wheel (2) is further provided with an installation groove (20) for installing the central lock block (19), and the groove width of the installation groove (20) is larger than the groove width of the second circumferential sliding groove (16).

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