Double-bag opening clamping and straightening mechanism

Abstract

The utility model discloses a double-bag mouth clamping and straightening mechanism which comprises a rotating disc, the rotating disc is rotatably installed on a positioning column and driven by a motor, two sector gears which are in meshing transmission are arranged on the rotating disc, pipe arms are connected to the two sector gears respectively, bag clamps are arranged at the ends of the pipe arms, and the bag clamps are connected with the rotating disc. A rotatable 7-shaped transmission swing rod is erected below the rotating disc, one end of the transmission swing rod is in transmission connection with one sector gear through a connecting rod, a roller is arranged at the other end of the transmission swing rod, a cam piece is installed on the positioning column, a clamping chuck is further arranged between the two bag clamps, and the clamping chuck is connected with the cam piece. Opening and clamping of the clamping chuck are controlled by an air cylinder. In this way, after the materials enter the bag, the bag openings of the double bags are clamped and straightened to prevent the materials from running out of the bag openings, and the best state is provided for follow-up bag sealing.

Description

Technical Field

[0001] The utility model relates to a component on a bag feeding machine, in particular to a double bag opening clamping and straightening mechanism. Background Art

[0002] The bag feeder is a device that puts materials into packaging bags for packaging. Its structure includes a turntable. The turntable rotates and passes through the bag loading station, bag opening station, bag entering station, bag sealing station, finished product removal station, etc. in sequence. During the bag loading process, two packaging bags will be loaded at the same time to form a double bag. After the material is bagged, such a double bag mouth may sometimes run out of the bag mouth due to the large amount of material in the device. In the next bag sealing station, the bag will be sealed together with the material, resulting in a loose seal, which greatly affects the bag sealing effect. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a double bag mouth clamping and straightening mechanism, the purpose of which is to clamp and straighten the double bag mouth after the material is put into the bag to prevent the material from running out of the bag mouth, thereby providing the best state for subsequent bag sealing.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-bag mouth clamping and straightening mechanism, comprising a turntable, which is rotatably mounted on a positioning column and driven by a motor, and two mutually meshing sector gears are provided on the turntable, and tube arms are respectively connected to the two sector gears, and bag clamps are provided at the ends of the tube arms, and a rotatable "7"-shaped transmission rocker is mounted under the turntable, and one end of the transmission rocker is connected to one of the sector gears through a connecting rod transmission, and the other end of the transmission rocker is provided with a roller, and a cam is installed on the positioning column. When the roller passes through the cam, it drives the transmission rocker to swing, and then drives the sector gear to rotate, so that the distance between the two bag clamps is enlarged, and a clamping chuck is also provided between the two bag clamps, and the opening and clamping of the clamping chuck are controlled by a cylinder.

[0005] A frame is provided corresponding to the clamping chuck, a chuck seat is installed on the frame, a rotatable first shaft rod and a second shaft rod are provided in the chuck, the clamping chuck includes a left clamping plate and a right clamping plate, the left clamping plate is connected to the first shaft rod, the right clamping plate is connected to the second shaft rod, the first shaft rod and the second shaft rod are respectively provided with gears, the two gears are engaged for transmission, one of the gears is connected to a swing rod, the cylinder is also installed on the frame, the piston rod of the cylinder and the swing rod are connected by a transmission connecting rod.

[0006] The beneficial effects of the utility model are as follows: the bag clamps clamp the two ends of the packaging bag, and after the material is put into the bag, the turntable is driven to rotate by the motor. During the rotation of the turntable, the roller passes through the cam piece, which can drive the fan gear to rotate, thereby widening the spacing of the bag clamps, so that the bag opening is straightened, and at the same time, the cylinder drives the clamping chuck to clamp the bag opening, so that after the material is put into the bag, the double bag opening is clamped and straightened to prevent the material from running out of the bag opening, providing the best state for subsequent bag sealing.

[0007] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A perspective view of a specific embodiment of the present utility model;

[0009] Figure 2 for Figure 1 A magnified view of middle A;

[0010] Figure 3 This is a three-dimensional diagram of the installation of the clamping chuck in a specific embodiment of the present utility model;

[0011] Figure 4 It is a cross-sectional view of the installation state of the clamping chuck in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0012] The present invention is described in detail below through examples, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0013] like Figure 1 — Figure 4As shown, this embodiment discloses a double bag mouth clamping and straightening mechanism, including a turntable 1, which is rotatably mounted on a positioning column 2 and driven by a motor, and is provided with two mutually meshing transmission sector gears 3 on the turntable 1, and a tube arm 4 is connected to each other on the two sector gears 3, and a bag clamp 5 is provided at the end of the tube arm 4, and the bag clamp 5 includes a fixed clamping plate 51 set at the end of the tube arm 4 and a movable clamping plate 52 that is telescopic along the inner hole of the tube arm 4, and the movable clamping plate 52 is installed on a telescopic rod, which is set in the inner hole of the tube arm 4, and a reset spring is set between the telescopic rod and the inner hole of the tube arm 4. Under the action of the reset spring, the movable clamping plate 52 and the fixed clamping plate 51 are kept in a clamped state, and a support shaft extending out of the tube arm 4 is connected to the telescopic rod. It is equipped with a rotating roller 53. After the rotating roller 53 rotates to the cam structure at the bag loading station, it can drive the movable clamp 52 to move and then open the bag clamp 5 to facilitate clamping the two ends of the packaging bag. A rotatable "7"-shaped transmission rocker 6 is mounted under the turntable 1. One end of the transmission rocker 6 and one of the sector gears 3 are connected by a connecting rod 7. The other end of the transmission rocker 6 is equipped with a roller 8. A cam piece 9 is installed on the positioning column 2. When the roller 8 passes through the cam piece 9, it drives the transmission rocker 6 to swing and drives the sector gear 3 to rotate, so that the distance between the two bag clamps 5 is enlarged. A clamping chuck 10 is also provided between the two bag clamps 5. The opening and clamping of the clamping chuck 10 are controlled by a cylinder 70.

[0014] The corresponding clamping chuck 10 is provided with a frame 20, and a chuck seat 30 is installed on the frame 20, and a rotatable first shaft rod 40 and second shaft rod 50 are provided in the chuck. The clamping chuck 10 includes a left clamping plate 101 and a right clamping plate 102, the left clamping plate 101 is connected to the first shaft rod 40, and the right clamping plate 102 is connected to the second shaft rod 50. The first shaft rod 40 and the second shaft rod 50 are respectively provided with a gear 60, and the two gears 60 are meshed for transmission, one of which is connected to a swing rod 80. A cylinder 70 is also installed on the frame 20, and the piston rod of the cylinder 70 and the swing rod 80 are connected by a transmission connecting rod 90. In this way, when the cylinder can drive one gear to rotate, the other gear will also rotate in the opposite direction, so that the left and right clamping plates of the clamping chuck can be opened or clamped. The clamping chuck is configured with two on the first and second shaft rods, which can ensure that the double-packaging bag openings can be operated simultaneously on their respective same structural workstations, greatly improving production efficiency.

[0015] By adopting the above technical solution, the bag clamp 5 clamps the two ends of the packaging bag. After the material is put into the bag, the turntable 1 is driven by the motor to rotate. During the rotation process of the turntable 1, the roller passes through the cam piece 9, which can drive the fan gear 3 to rotate, thereby widening the spacing of the bag clamp 5, so that the bag opening is straightened. At the same time, the cylinder 70 drives the clamping chuck 10 to clamp the bag opening. In this way, after the material is put into the bag, the double bag opening is clamped and straightened to prevent the material from running out of the bag opening, providing the best state for subsequent bag sealing. When sealing the double bag opening, the clamping chuck 10 is released, and the straightened packaging bag is rotated through the turntable to the bag sealing station for sealing.

[0016] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0017] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A double bag mouth clamping and straightening mechanism, comprising a turntable rotatably mounted on a positioning post and driven by a motor, characterized in that: Two mutually meshing sector gears are provided on the turntable, and a tube arm is connected to each of the two sector gears. A bag clamp is provided at the end of the tube arm. A rotatable "7"-shaped transmission rocker is set under the turntable. One end of the transmission rocker is connected to one of the sector gears through a connecting rod transmission. The other end of the transmission rocker is provided with a roller, and a cam is installed on the positioning column. When the roller passes through the cam, it drives the transmission rocker to swing, and then drives the sector gear to rotate, so that the distance between the two bag clamps is increased. A clamping chuck is also provided between the two bag clamps, and the opening and clamping of the clamping chuck are controlled by a cylinder.

2. The double bag opening clamping and straightening mechanism according to claim 1, characterized in that: A frame is provided corresponding to the clamping chuck, a chuck seat is installed on the frame, a rotatable first shaft rod and a second shaft rod are provided in the chuck, the clamping chuck includes a left clamping plate and a right clamping plate, the left clamping plate is connected to the first shaft rod, the right clamping plate is connected to the second shaft rod, the first shaft rod and the second shaft rod are respectively provided with gears, the two gears are engaged for transmission, one of the gears is connected to a swing rod, the cylinder is also installed on the frame, the piston rod of the cylinder and the swing rod are connected by a transmission connecting rod.

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