A sucking open mechanism of a paper bag production apparatus

Abstract

The application discloses a suction opening mechanism of a paper bag production equipment, which comprises a supporting plate, symmetrically arranged suction arm assemblies on the supporting plate, reverse synchronous rotation of the suction arm assemblies being realized by using synchronous pulley sets, a suction pipe being rotatably installed on a connecting seat of a swing arm and a ventilation seat of a suction disc, an end face cam being installed on the swing arm, a swing piece being fixedly installed on the suction pipe, ball bearings being installed on side walls of the swing piece, the ball bearings moving in a circumferential direction at an end face edge of the end face cam when the swing arm swings in a circumferential direction, the ball bearings moving to a convex part of the end face cam when the suction pipe adsorbs a paper bag opening and opens, the swing piece driving the suction pipe to rotate, the adsorption part of the paper bag opening being leveled with the bag body, fold marks being avoided, the opening being kept flat, and the production quality of subsequent processes being ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a paper bag production equipment, in particular to an opening mechanism of a paper bag production equipment. BACKGROUND

[0002] The production process of the existing automatic bottom pasting machine of paper bag is to cut out the unsealed paper bag, then insert the opening mechanism into the paper bag opening to expand the two sides of the paper bag opening, and finally paste the bottom of the expanded paper bag. However, since the paper bag opening is in a lapped state before being expanded, the opening mechanism may cause damage to the paper bag during the insertion process, thereby reducing the production efficiency. Therefore, it is necessary to add a device to open the paper bag opening in the bottom pasting machine. The patent document with publication number CN209616489U discloses an opening device of a paper bag bottom pasting machine, which includes a supporting plate, a left suction arm assembly and a right suction arm assembly are installed on the supporting plate, the left suction arm assembly includes a crank fixed at one end of the rotating shaft of the second synchronous pulley, the other end of the crank is rotatably connected with a connecting arm, a grinding disc is fixedly installed on the rotating shaft of the first synchronous pulley, the grinding disc is rotatably connected with a ventilation connecting shaft installed on the connecting arm, a gas arm is connected to the side of the connecting arm away from the grinding disc, a cavity is formed in the gas arm, and a gas pipe is connected between the cavity and the ventilation connecting shaft; the existing technical solution in the above has the following defects: the gas arm is fixedly installed on the connecting arm, and during the approach or separation of the left suction arm assembly and the right suction arm assembly, the air nozzle on the gas arm only moves linearly. Since the paper bag is made of flexible material, the position of the paper bag opening being sucked and expanded is always parallel to the air nozzle, and the suction part of the paper bag opening after being expanded forms an angle with the bag body, which causes the paper bag opening to form a crease, resulting in uneven opening, which may affect the quality of subsequent stamping and bonding. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides an opening mechanism of a paper bag production equipment.

[0004] The technical scheme adopted by the present application to solve its technical problems is:

[0005] The invention discloses a kind of suction mechanism of paper bag production equipment, including support plate, the suction arm assembly of symmetrical arrangement of support plate, the reverse synchronous rotation of synchronous pulley group between suction arm assembly is realized, the suction arm assembly includes first swing arm and suction disc rotatably installed on the support plate, the end of first swing arm is rotatably installed with connecting seat, suction pipe is rotatably installed on the connecting seat, swing piece is fixedly installed with the both sides of connecting seat, the upper side of the end face of connecting seat away from first swing arm is installed with pressing block, spring is installed between swing piece and pressing block, first swing arm is fixedly installed with the end face cam coaxial with connecting seat, the end face of end face cam is provided with protruding portion along its edge circumference, the side wall of any swing piece is rotatably installed with first rolling bearing, when first swing arm makes circumferential swing, first rolling bearing moves along the end face edge of connecting seat, suction disc is rotatably installed with air passage seat, suction pipe is rotatably installed in air passage seat and is communicated with each other.

[0006] The end face of suction disc is provided with suction hole, air passage cavity is arranged in air passage seat, air hole is arranged on the outside of suction pipe, after assembly, air hole is located in air passage cavity, the rear end of air passage seat is rotatably installed in suction hole and is communicated with each other, air distribution disc is installed on support plate, front side of air distribution disc is provided with air groove, rear side is provided with suction pipe communicated with air groove, after assembly, the end face of air distribution disc is abutted with the rear end face of suction disc, air groove is on the rotation path of suction hole.

[0007] The end face of end face cam is provided with a plurality of arc-shaped installation grooves, fixed bolts are installed in arc-shaped installation grooves, after assembly, fixed bolts are connected with first swing arm.

[0008] The shape of protruding portion is high in the middle and low on both sides.

[0009] Protruding portion accounts for half of the length of the end face edge of end face cam.

[0010] Paper supporting arm is rotatably installed on support plate by connecting shaft, the rear end of connecting shaft passes through support plate and is installed with second swing arm, second rolling bearing is rotatably installed on the end of second swing arm, cam is rotatably installed on the rear side of support plate and is driven by synchronous pulley group, tension spring is installed between the middle of second swing arm and support plate, second rolling bearing is abutted with the side face of cam by the tension of tension spring.

[0011] The beneficial effect of the present application is that the air suction pipe is rotatably installed on the connecting seat of the swing arm and the air passage seat of the suction disc, the end face cam is installed on the swing arm, the swing piece is fixedly installed on the air suction pipe, the ball bearing is installed on the side wall of the swing piece, when the swing arm swings circumferentially, the ball bearing moves circumferentially on the edge of the end face of the end face cam, when the air suction pipe adsorbs the paper bag opening and opens, at this time, the ball bearing moves to the convex part of the end face cam, the swing piece drives the air suction pipe to rotate, so that the adsorption part of the paper bag opening is leveled with the bag body, the fold is avoided, the opening is kept flat, and the production quality of the subsequent process is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] The present application is further illustrated below in conjunction with the drawings and embodiments.

[0013] Figure 1 is one of the structural schematic diagrams of the present application;

[0014] Figure 2 is the second structural schematic diagram of the present application;

[0015] Figure 3 is the exploded schematic diagram of the present application;

[0016] Figure 4 is the exploded schematic diagram of the suction arm assembly;

[0017] Figure 5 is the top view of the suction arm assembly;

[0018] Figure 6 is the structural schematic diagram of the end face cam. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in conjunction with specific embodiments and with reference to the drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] It is understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0021] REFERENCE Figures 1 to 6The application discloses a suction opening mechanism of a paper bag production equipment, which comprises a support plate 1, symmetrically arranged suction arm assemblies on the support plate 1, and reverse synchronous rotation of the suction arm assemblies is realized by using a synchronous belt wheel set, the suction arm assemblies comprise a first swing arm 2 and a suction disc 11 which are rotatably installed on the support plate 1, the first swing arm 2 and the suction disc 11 are driven to rotate by the synchronous belt wheel set, and the synchronous belt wheel set uses a driving shaft as a driving end, an end of the first swing arm 2 is rotatably installed with a connecting seat 3, the connecting seat 3 is rotatably installed with a suction pipe 4, a plurality of suction nozzles are arranged on the suction pipe 4, two sides of the connecting seat 3 are fixedly installed with swing pieces 5 corresponding to the suction pipe 4, a pressing block 6 is installed on the end face of the connecting seat 3 away from the first swing arm 2, a spring 7 is installed between the swing piece 5 and the pressing block 6, the first swing arm 2 is fixedly installed with a coaxial end face cam 8 of the connecting seat 3, a convex part 9 is arranged on the end face of the end face cam 8 along the edge in the circumferential direction, in the embodiment, the convex part 9 is located away from the shaft center of the first swing arm 2, that is, the outermost position of the circumferential swing of the first swing arm 2, a first rolling bearing 10 is rotatably installed on the side wall of any swing piece 5, when the first swing arm 2 swings in the circumferential direction, the first rolling bearing 10 moves in the circumferential direction along the edge of the end face of the connecting seat 3, the suction disc 11 is rotatably installed with a ventilation seat 12, the suction pipe 4 is rotatably installed in the ventilation seat 12 and communicates with each other, when the suction pipes are close to each other, the swing arm swings in the circumferential direction, the ball bearing moves in the circumferential direction along the edge of the end face of the end face cam, when the distance between the suction pipes is the smallest, the suction pipe adsorbs the paper bag opening at this time, and continues to move away gradually, the paper bag is opened in the moving process, the ball bearing moves from the lowest position to the highest position of the convex part in the opening process of the paper bag, so that the swing piece drives the suction pipe to rotate, the suction part of the paper bag opening is flat with the bag body, so that the fold is avoided, the opening is kept flat, and the production quality of the subsequent process is ensured, after the ball bearing moves away from the highest position of the convex part, the swing piece is reset by the spring, so that the suction pipe is reset and adjusted.

[0022] An air suction hole 13 is arranged on the end face of the suction disc 11, an air suction cavity is arranged in the ventilation seat 12, air holes 14 are arranged on the outer side of the suction pipe 4, after assembly, the air holes 14 are located in the air suction cavity, the rear end of the ventilation seat 12 is rotatably installed in the air suction hole 13 and communicates with each other, the support plate 1 is installed with a gas distribution disc 15, the front side of the gas distribution disc 15 is provided with a gas groove 16, the rear side is provided with a suction pipe which communicates with the gas groove 16, after assembly, the end face of the gas distribution disc 15 abuts against the rear end face of the suction disc 11, the gas groove 16 is on the rotating path of the air suction hole 13, when the suction pipe moves to the smallest distance, the air suction hole moves to the end of the gas groove and communicates, at this time, the suction pipe starts to adsorb the paper bag, when the air suction hole is separated from the gas groove, the suction pipe loses the suction force and releases the paper bag.

[0023] The end surface of the end surface cam 8 is provided with a plurality of arc-shaped mounting grooves 17, and fixing bolts are mounted in the arc-shaped mounting grooves 17. After assembly, the fixing bolts are connected with the first swing arm 2, and the position of the protruding part can be adjusted by rotating the end surface cam 8, so as to control the rotating timing of the air suction pipe.

[0024] The protruding part 9 is shaped as high in the middle and low on both sides, and the protruding part 9 occupies half of the length of the end surface edge of the end surface cam 8.

[0025] The supporting plate 1 is rotatably mounted with a paper supporting arm 19 through a connecting shaft 18, the rear end of the connecting shaft 18 penetrates through the supporting plate 1 and is mounted with a second swing arm 20, the end of the second swing arm 20 is rotatably mounted with a second rolling bearing 21, the rear side of the supporting plate 1 is rotatably mounted with a cam 22 driven by the synchronous belt wheel set, the middle part of the second swing arm 20 is mounted with a tension spring 23 between the supporting plate 1, and the second rolling bearing 21 is in abutment with the side surface of the cam 22 through the tension of the tension spring 23. When the second rolling bearing 21 is in abutment with the protruding position of the cam 22, the paper supporting arm 19 swings upward and is leveled with the horizontal plane at this time, the end part of the paper bag conveyed between the suction arm assemblies is supported and leveled, and the suction of the suction arm assemblies is facilitated.

[0026] In the present application, the term "plurality" refers to two or more, unless otherwise explicitly limited. The term "and / or" as used herein encompasses all possible combinations of one or more of the associated listed items. The terms "mounting", "connected", "connecting", "fixed", and the like should be understood in a broad sense unless otherwise explicitly limited. For example, "connected" can be fixed connection, detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. The above terms can be understood in the specific meaning in the present application according to the specific circumstances for those skilled in the art.

[0027] It should be noted that when an element is referred to as "assembled to", "mounted to", "fixed to" or "provided to" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0028] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like are intended to indicate that the described implementation, feature, structure, material or characteristic is included in at least one embodiment or example of the application. In the description of the specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in an appropriate manner.

[0029] Although embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, alternatives and variations to these embodiments could be made without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A suction opening mechanism of a paper bag production equipment, comprising a support plate (1), a suction arm assembly symmetrically arranged on the support plate (1), and a synchronous belt wheel set arranged between the suction arm assemblies to realize reverse synchronous rotation, characterized in that The suction arm assembly comprises a first swing arm (2) and a suction disc (11), the end of the first swing arm (2) is rotatably connected with a connecting seat (3), the connecting seat (3) is rotatably connected with a suction pipe (4), the two sides of the connecting seat (3) are fixedly connected with swing pieces (5), the upper side of the end face of the connecting seat (3) away from the first swing arm (2) is connected with a pressing block (6), the spring (7) is arranged between the swing piece (5) and the pressing block (6), the first swing arm (2) is fixedly connected with an end face cam (8) coaxial with the connecting seat (3), the end face of the end face cam (8) is provided with a convex part (9) along the edge, the side wall of the swing piece (5) is rotatably connected with a first rolling bearing (10), when the first swing arm (2) swings circumferentially, the first rolling bearing (10) moves circumferentially along the edge of the end face of the connecting seat (3), the suction disc (11) is rotatably connected with a ventilation seat (12), and the suction pipe (4) is rotatably arranged in the ventilation seat (12) and communicates with each other.

2. The unpinning mechanism of claim 1, wherein The end face of the suction disc (11) is provided with a suction hole (13), the ventilation seat (12) is provided with a suction cavity, the outer side of the suction pipe (4) is provided with a gas hole (14), after assembly, the gas hole (14) is located in the suction cavity, the rear end of the ventilation seat (12) is rotatably arranged in the suction hole (13) and communicates with each other, the support plate (1) is provided with a gas distribution disc (15), the front side of the gas distribution disc (15) is provided with a gas groove (16), the rear side is provided with a suction pipe communicating with the gas groove (16), after assembly, the end face of the gas distribution disc (15) abuts against the rear end face of the suction disc (11), and the gas groove (16) is located on the rotating path of the suction hole (13).

3. The unpinning mechanism of claim 1, wherein The end face of the end face cam (8) is provided with a plurality of arc-shaped mounting grooves (17), the arc-shaped mounting grooves (17) are provided with fixing bolts, after assembly, the fixing bolts are connected with the first swing arm (2).

4. The unpinning mechanism of claim 1, wherein The convex part (9) is high in the middle and low on both sides.

5. The unpinning mechanism of claim 1, wherein The convex part (9) accounts for half of the length of the edge of the end face of the end face cam (8).

6. The unrolling mechanism of claim 1, wherein The support plate (1) is rotatably connected with a paper supporting arm (19) through a connecting shaft (18), the rear end of the connecting shaft (18) penetrates through the support plate (1) and is connected with a second swing arm (20), the end of the second swing arm (20) is rotatably connected with a second rolling bearing (21), the rear side of the support plate (1) is rotatably connected with a cam (22) driven by the synchronous belt wheel set, the middle part of the second swing arm (20) and the support plate (1) are connected with a tension spring (23), and the second rolling bearing (21) abuts against the side face of the cam (22) through the tension of the tension spring (23).

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