Bag opening device of bag opening and cover conveying machine

Abstract

The utility model provides a bag opening device of a bag opening and cover conveying machine. The cover pressing strip fixing device is arranged on the rack, the cover pressing strip fixing device comprises a driving roller, a fixed roller and a pressing roller, the fixed roller is located on one side of the inclined upper portion of the driving roller, and the pressing roller is arranged on the rack through a swing buffering mechanism; the bag breaking knife is arranged on the rack in a telescopic moving manner; the bag breaking roller is arranged on the machine frame and located below the bag breaking cutter. Compared with the prior art, the pressing roller in the pressing cover strip fixing device is arranged on the rack through the swing buffering mechanism, the top of the cover strip and the left side or the right side of the top can be buffered, pressed and fixed, the buffering effect is achieved when the pressing roller presses and fixes the cover strip, and pressing deformation of a cover piece in the cover strip is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bag removing and cap feeding machines, in particular to a bag removing device of the bag removing and cap feeding machine. Background Art

[0002] Round bags (such as bags with lids of cans) are currently mostly packaged in sealed bags to facilitate the transfer and transportation of the above materials. When unpacking the above bags, most of them are unpacked manually, and the lids are stacked and manually placed on the feeding device of the lid feeding machine for feeding, which is not only labor-intensive but also low in work efficiency.

[0003] In the prior art, the Chinese patent publication number is: CN108163303A, which discloses an automatic bag opening machine, including a frame, a paper discharging mechanism and a bag breaking mechanism, the bag breaking mechanism includes a bag breaking device and a fixing device; the fixing device is composed of an active rubber wheel, a downward pressing passive steel shaft and a steel shaft; the active rubber wheel rotates counterclockwise to drive the cover strip to rotate, and the cover strip drives the downward pressing passive steel shaft and the steel shaft to rotate; the bag breaking device includes a saw tooth and a motor driving it, and the bag breaking device is placed under the saw tooth; the saw tooth moves forward and laterally to saw through the protrusions squeezed into the cover strip.

[0004] However, the passive steel shaft in the above patent does not provide any buffer for the cover strip (packaging bag) during the pressing process, and can easily deform the cover sheet in the cover strip, thus affecting the assembly of the cover sheet and the can body. Utility Model Content

[0005] The utility model aims to provide a bag unpacking device for a bag unpacking and cover feeding machine, aiming to solve the problem in the prior art that the pressing roller has no buffer when pressing down and the cover sheet in the cover strip is easily deformed.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bag unpacking device of a bag unpacking and capping machine, comprising: a frame; a capping strip fixing device, which is arranged on the frame, and the capping strip fixing device comprises an active roller, a fixed roller and a pressing roller, the fixed roller is located on the side obliquely above the active roller, and the pressing roller is arranged on the frame through a swing buffer mechanism, and is used for buffering, pressing and fixing the top and the left or right side of the top of the capping strip; a bag breaking knife, which is telescopically arranged on the frame, and is used for tearing the packaging bag on the surface of the capping strip that is pressed and fixed; a bag breaking roller, which is arranged on the frame and is located below the bag breaking knife, and is used for peeling the torn packaging bag from the outer surface of the capping strip.

[0007] Furthermore, a buffer spring is provided at the end of the pressing roller.

[0008] Furthermore, the swing buffer mechanism includes two swing link frames, a connecting rod and a swing link motor, the two swing link frames are symmetrically arranged on the frame, the two swing link frames are provided with a coupling mounting slider, one end of the coupling mounting slider is provided with the buffer spring, the two ends of the pressing roller are connected to the two swing link frames through the coupling mounting slider, the two swing link frames are provided with an arc-shaped rack, the connecting rod is provided with a gear meshing with the arc-shaped rack, and one end of the connecting rod is provided with the swing link motor, which is used to drive the connecting rod to drive the pressing roller on the swing link frame to move in an arc, so as to press and fix the top of the cover strip and the left or right side of the top.

[0009] Furthermore, a telescopic cylinder for driving the bag breaking knife to move telescopically is provided at one end of the bag breaking knife.

[0010] Furthermore, the bag breaking knife is arranged along the length direction of the gland strip fixing device.

[0011] Furthermore, a knife groove is provided on the outer peripheral surface of the bag breaking roller, the bag breaking roller and the driving roller are connected by gears, and the bag breaking shaft and the driving roller move relative to each other to send the packaging bag downward.

[0012] Furthermore, an active roller driving motor is provided at one end of the active roller.

[0013] Furthermore, both ends of the bag breaking roller are telescopically arranged on the frame through sliders and springs.

[0014] The utility model provides a bag unpacking device of a bag unpacking and cover feeding machine. Compared with the prior art, a pressing roller in a cover strip fixing device is arranged on a frame through a swinging buffer mechanism, which can buffer, press and fix the top of the cover strip and the left or right side of the top, so that the pressing roller has a buffering effect when pressing and fixing the cover strip, thereby avoiding pressing and deformation of the cover sheet in the cover strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the structural schematic diagrams of a bag removing device of a bag removing and cap feeding machine of the utility model;

[0016] Figure 2 This is the second structural schematic diagram of a bag removing device of a bag removing and cap feeding machine of the utility model;

[0017] Figure 3 This is a front view of a bag removing device of a bag removing and cap feeding machine according to the utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0019] Description of Reference Numerals

[0020] 10- rack;

[0021] 20-active roller; 21-fixed roller; 22-pressing roller; 23-active roller driving motor;

[0022] 30-swing connecting rod frame; 301-coupling shaft mounting slider; 302-arc rack; 31-connecting rod; 311-gear; 32-swing connecting rod motor;

[0023] 40-Bag breaking knife; 41-Telescopic cylinder;

[0024] 50-bag breaking roller; 51-knife groove; 52-sliding block. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific embodiments.

[0026] In the present utility model, when directional words appear, they are used to facilitate the description of the utility model and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present utility model.

[0027] In the present invention, unless otherwise specified and limited, when terms such as "disposed on", "connected" and "connected" appear, these terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figures 1 to 4 As shown, a bag unpacking device of a bag unpacking and capping machine comprises a frame 10, a capping strip fixing device, a bag breaking knife 40 and a bag breaking roller 50.

[0029] The cover strip fixing device is arranged on the frame 10, and the cover strip fixing device includes an active roller 20, a fixed roller 21 and a pressing roller 22. The fixed roller 21 is located on the side obliquely above the active roller 20, and the pressing roller 22 is arranged on the frame 10 through a swing buffer mechanism, which is used to buffer, press and fix the top of the cover strip and the left or right side of the top.

[0030] A buffer spring (not shown) is disposed at the end of the pressing roller 22 to buffer the cover strip when it is pressed, thereby avoiding deformation of the cover sheet in the cover strip.

[0031] Specifically, the swing buffer mechanism includes two swing link frames 30, a connecting rod 31 and a swing link motor 32. Both of the two swing link frames 30 are fan-shaped swing link frames 30, and the two swing link frames 30 are symmetrically arranged on the frame 10. The two swing link frames 30 are provided with a coupling mounting slider 301, and one end of the coupling mounting slider 301 is provided with a buffer spring (not shown). The two ends of the pressing roller 22 are connected to the two swing link frames 30 through the coupling mounting slider 301. The two swing link frames 30 are provided with an arc-shaped rack 303, and the connecting rod 31 is provided with a gear 311 meshingly connected with the arc-shaped rack 303. One end of the connecting rod 31 is provided with a swing link motor 32, which is used to drive the connecting rod 31 to drive the pressing roller 22 on the swing link frame 30 to move in an arc, so as to press and fix the top of the cover strip and the left or right side of the top.

[0032] In addition, the advantage of pressing the cover strip by the pressing roller 22 in an arc motion can also be used to adapt to cover strips of different diameters.

[0033] The bag-breaking knife 40 is telescopically disposed on the frame 10 and is used to tear the packaging bag on the surface of the cover strip that is pressed and fixed.

[0034] The bag breaking roller 50 is disposed on the frame 10 and is located below the bag breaking knife 40 , and is used for peeling the torn packaging bag from the outer surface of the cover strip.

[0035] During the specific implementation, the cover strip containing the packaging bag is placed between the fixed roller 21 and the active roller 20, and the swing link motor 32 drives the connecting rod 31 to drive the two swing link frames 30 to move along the arc, thereby driving the pressing rollers 22 connected to the two swing link frames 30 to move along the arc, pressing and fixing the top of the cover strip and the left or right side of the top, and the active roller 20 rotates to drive the cover strip to rotate, and the bag breaking knife 40 extends to tear the packaging bag wrapped on the surface of the cover strip, and the bag breaking roller 50 peels the torn packaging bag from the outer surface of the cover strip.

[0036] In this embodiment, a telescopic cylinder 41 for driving the bag breaking knife 40 to move telescopically is provided at one end of the bag breaking knife 40. The bag breaking knife 40 is driven to move telescopically on the frame 10 by the telescopic cylinder.

[0037] The bag-breaking knife 40 is arranged along the length direction of the cover strip fixing device to avoid the packaging bag on the outer surface of the cover strip from being unable to be torn apart all at once due to length problems.

[0038] In this embodiment, a knife groove 51 is provided on the outer peripheral surface of the bag breaking roller 50, and the bag breaking roller 50 and the active roller 20 are connected by gears. The bag breaking shaft and the active roller 20 move relative to each other to send the packaging bag downward to prevent the packaging bag from remaining on the surface of the cover strip.

[0039] In this embodiment, an active roller driving motor 23 is provided at one end of the active roller 20 to drive the active roller 20 to rotate.

[0040] In this embodiment, both ends of the bag breaking roller 50 are telescopically arranged on the frame 10 through sliders 52 and springs to adapt to cover strips of different diameters.

[0041] Compared with the prior art, the utility model provides a bag unpacking device of a bag unpacking and cap feeding machine. The pressing roller 22 in the capping strip fixing device is arranged on the frame 10 through a swinging buffer mechanism, which can buffer, press and fix the top of the capping strip and the left or right side of the top, so that the pressing roller 22 has a buffering effect when pressing and fixing the capping strip, thereby avoiding pressing and deformation of the cap sheet in the capping strip.

[0042] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A bag unpacking device for a bag unpacking and cap feeding machine, characterized in that: include: frame; A cover strip fixing device is arranged on the frame, and comprises a driving roller, a fixed roller and a pressing roller, wherein the fixed roller is located on a side obliquely above the driving roller, and the pressing roller is arranged on the frame through a swing buffer mechanism, and is used for buffering, pressing and fixing the top of the cover strip and the left or right side of the top; A bag-breaking knife, which is telescopically arranged on the frame and is used to tear the packaging bag on the surface of the cover strip that is pressed and fixed; The bag breaking roller is arranged on the frame and located below the bag breaking knife, and is used for peeling the torn packaging bag from the outer surface of the cover strip.

2. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 1, characterized in that: A buffer spring is provided at the end of the pressing roller.

3. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 2, characterized in that: The swing buffer mechanism includes two swing link frames, a connecting rod and a swing link motor, the two swing link frames are symmetrically arranged on the frame, the two swing link frames are provided with a coupling mounting slider, one end of the coupling mounting slider is provided with the buffer spring, the two ends of the pressing roller are connected to the two swing link frames through the coupling mounting slider, the two swing link frames are provided with arc-shaped racks, the connecting rod is provided with a gear meshing with the arc-shaped racks, and one end of the connecting rod is provided with the swing link motor, which is used to drive the connecting rod to drive the pressing roller on the swing link frame to move in an arc to press and fix the top of the cover strip and the left or right side of the top.

4. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 1, characterized in that: One end of the bag breaking knife is provided with a telescopic cylinder for driving the bag breaking knife to move telescopically.

5. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 4, characterized in that: The bag breaking knife is arranged along the length direction of the gland strip fixing device.

6. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 1, characterized in that: The outer peripheral surface of the bag breaking roller is provided with a knife groove, and the bag breaking roller and the driving roller are connected by gears. The bag breaking roller and the driving roller move relative to each other to send the packaging bag downward.

7. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 6, characterized in that: An active roller driving motor is provided at one end of the active roller.

8. The bag unpacking device of the bag unpacking and cap feeding machine according to claim 1, characterized in that: The two ends of the bag breaking roller are telescopically arranged on the frame through sliding blocks and springs.

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