Machine clamp for M bags

Abstract

The utility model discloses an M bag machine clamp which comprises a rotating disc, a left clamping arm and a right clamping arm, the left clamping arm and the right clamping arm are rotatably installed on the rotating disc through a shaft, one end of the left clamping arm and one end of the right clamping arm are respectively provided with a sector gear, the two sector gears are in meshing transmission, and the other end of the left clamping arm and the other end of the right clamping arm are respectively provided with a front clamp and a rear clamp. The front clamp is opened and closed through the first opening and closing mechanism, the rear clamp is opened and closed through the second opening and closing mechanism, in this way, the front V-shaped folded edge of the M shape of the side portion of the bag opening of the M bag is clamped through the front clamp, the rear V-shaped folded edge of the M shape of the side portion of the bag opening of the M bag is clamped through the rear clamp, the rear clamp is driven by the bag opening driving mechanism to be separated from the front clamp, and therefore the bag opening can be opened. A first pull rod is arranged at the sector gear end of the left clamping arm or the right clamping arm and connected with a packaging bag specification adjusting mechanism, so that the opening angle of the left clamping arm and the right clamping arm can be adjusted according to the specification of a bag opening to adapt to the specification of the bag opening of the packaging bag or be straightened to close the bag opening, and the bag opening adjusting mechanism is suitable for the bag feeding machine of the packaging bag with the M-shaped opening.

Description

Technical Field

[0001] The utility model relates to a component on a bag feeding machine, in particular to an M bag feeding machine clamp. Background Art

[0002] The clamp on the rotary bag feeding machine is mainly used to clamp the packaging bag. After clamping the packaging bag, it rotates and passes through the bag opening station, material bag feeding station, and bag sealing station in sequence for operation, especially the existing packaging bag with an M-shaped opening packaging bag on both sides of the bag opening, which is called an M-shaped opening packaging bag for short. The M-shaped opening packaging bag has a larger opening area and is convenient for taking and placing food, so it is widely used in food packaging. When bag feeding and packaging, the original clamp clamps the "M"-shaped folded edges at both ends of the packaging bag and can only operate in a straight bag manner, and cannot clamp the two V-shaped folded edges of the "M"-shaped bag opening. In this way, the bag opening cannot be fully opened, affecting the operation of material feeding into the bag. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide an M-bag machine clamp which has a reliable structure and can open or straighten the bag to close the bag, so as to be suitable for a bag feeding machine for M-shaped open packaging bags.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an M bag machine clamp, comprising a turntable, a left clamp arm and a right clamp arm, the turntable is mounted on a rotating shaft, the rotating shaft is mounted in a turntable column, the rotating shaft is driven by a motor, the left clamp arm and the right clamp arm are rotatably mounted on the turntable through a shaft, a fan gear is respectively arranged at one end of the left clamp arm and one end of the right clamp arm, and the two fan gears are meshed for transmission, a front clamp and a rear clamp are respectively arranged at the other end of the left and right clamp arms, the front clamp is opened and closed by a first opening and closing mechanism, and the rear clamp is opened and closed by a second opening and closing mechanism, and the rear clamp is also driven by a bag opening drive mechanism to open a distance between it and the front clamp, a first pull rod is arranged at the fan gear end on the left clamp arm or the right clamp arm, and the first pull rod is connected to the packaging bag specification adjustment mechanism.

[0005] The first opening and closing mechanism includes a first positioning clamp plate and a rotatable first movable clamp plate installed at the end of the left or right clamp arm, the first positioning clamp plate and the first movable clamp plate form the front clamp, a retractable first transmission rod is arranged in the left or right clamp arm, the first transmission rod is connected to the first movable clamp plate through a hinge, a first shaft rod extending out of the left or right clamp arm is arranged at the tail of the first transmission rod, the left or right clamp arm is provided with a first limiting hole for the first shaft rod to pass through, a front opening and closing roller is arranged on the first shaft rod, a front retractable push plate is arranged corresponding to the front opening and closing roller frame, left and right first spring brackets are arranged on the first shaft rod, and a first tension spring is arranged between the first spring bracket and the first positioning clamp plate.

[0006] The second opening and closing mechanism includes a telescopic tube installed on the left or right clamp arm, a seat body is arranged at the end of the telescopic tube, a second positioning clamp plate is arranged at a distance from the end of the telescopic tube, a clamp rod is arranged in the telescopic tube and slides along the telescopic tube, the end of the clamp rod extends out of the telescopic tube and contacts or moves away from the second positioning clamp plate to form the rear clamp, the tail of the clamp rod is connected to the second shaft rod, the left or right clamp arm is provided with a second limiting hole for the second shaft rod to pass through, the end of the second shaft rod is arranged with a rear opening and closing roller, a rear telescopic push plate is arranged corresponding to the rear opening and closing roller frame, a second spring bracket is also arranged on the second shaft rod, and a second tension spring is arranged between the second spring bracket and the second positioning.

[0007] The bag opening drive mechanism includes a transmission seat installed on the turntable, a guide rod which can be extended and retracted along the radial direction of the turntable is arranged on the transmission seat, a connecting block is arranged at the front end of the guide rod, a bag opening pull rod is arranged between the connecting block and the rear clamp, a shift fork is arranged at the rear end of the guide rod, and a rotatable rocker arm is also arranged on the transmission seat, a shift rod is arranged at one end of the rocker arm, and the shift rod is placed in the fork groove of the shift fork, a bag opening roller is arranged at the other end of the rocker arm, and a bag opening cam piece is arranged corresponding to the bag opening roller.

[0008] The packaging bag specification adjustment mechanism includes an adjusting shaft, one end of the adjusting shaft is connected to a first adapter plate, the end of the first adapter plate is transmission-connected to the end of the first pull rod, the other end of the adjusting shaft is connected to a second adapter plate, the end of the second adapter plate is provided with a mounting shaft, a specification adjustment roller is provided on the mounting shaft, a specification cam piece is provided corresponding to the specification adjustment roller, the specification cam piece is installed on a lifting sleeve, the lifting sleeve is provided on the turntable column, an inclined groove is provided on the peripheral wall of the lifting sleeve, a convex column placed in the inclined groove is provided on the turntable column, the lifting sleeve is connected to one end of a lifting pull rod, and the other end of the lifting pull rod is connected to a rotating drive assembly.

[0009] The rotary drive assembly includes a swing block, a swing seat and a swing shaft. The swing shaft is inserted in the swing seat and rotates. The swing block is installed at one end of the swing shaft. The other end of the swing shaft is transmission connected to the output shaft of the motor. The lifting rod is transmission connected to the swing block.

[0010] The beneficial effects of the utility model are as follows: the front clamp is opened and closed by the first opening and closing mechanism, and the rear clamp is opened and closed by the second opening and closing mechanism, so that the front "V"-shaped folded edge of the "M" shape on the side of the bag opening of the M bag is clamped by the front clamp, and the rear "V"-shaped folded edge is clamped by the rear clamp, and the rear clamp is also driven by the bag opening drive mechanism to pull the distance between it and the front clamp, so that the bag opening can be opened, and a first pull rod is provided at the fan-shaped gear end on the left clamp arm or the right clamp arm, and the first pull rod is connected to the packaging bag specification adjustment mechanism, so that the opening angles of the left clamp arm and the right clamp arm can be adjusted according to the bag opening specifications to adapt to the bag opening specifications of the packaging bag or to straighten and close the bag opening, so that it is suitable for bag feeding machines for M-shaped opening packaging bags.

[0011] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0013] Figure 2 The local structure of the specific implementation method of the utility model Figure 1 ;

[0014] Figure 3 The local structure of the specific implementation method of the utility model Figure 2 ;

[0015] Figure 4 This is a structural diagram of the front and rear clamps in a specific implementation manner of the utility model.

[0016] Figure 5 It is a structural diagram of the rear clamp in a specific implementation manner of the utility model.

[0017] In the figure: 1, turntable; 2, left clamp arm; 3, right clamp arm; 4, turntable column; 5, sector gear; 6, front clamp; 60, first opening and closing mechanism; 7, rear clamp; 70, second opening and closing mechanism; 8, bag opening drive mechanism; 9, first pull rod; 10, packaging bag specification adjustment mechanism; 61, first positioning clamp plate; 62, first movable clamp plate; 63, first transmission rod; 64, first shaft rod; 65, front opening and closing roller; 66, first spring bracket; 67, first tension spring; 71, telescopic tube; 72, second positioning clamp plate; 73, clamp rod; 74, second shaft rod; 75, rear opening and closing roller Wheel; 76, second spring bracket; 81, transmission seat; 82, guide rod; 820, connecting block; 83, bag opening rod; 84, fork; 85, rocker rod; 86, lever; 87, bag opening roller; 88, bag opening cam; 101, adjustment shaft; 102, first adapter plate; 103, second adapter plate; 104, adjustment roller; 1041, specification cam; 105, lifting sleeve; 106, tilting groove; 107, boss; 108, lifting rod; 20, rotation drive assembly; 201, swing block; 202, swing seat; 203, swing shaft. DETAILED DESCRIPTION

[0018] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0019] like Figure 1 — Figure 5 As shown, this embodiment discloses an M bag machine clamp, including a turntable 1, a left clamp arm 2 and a right clamp arm 3, the left clamp arm 2 and the right clamp arm 3 are a group and are evenly distributed on the edge of the turntable 1, the turntable 1 is installed on a rotating shaft, the rotating shaft is installed in a turntable column 4 through a bearing, the rotating shaft is driven by a motor, the left clamp arm 2 and the right clamp arm 3 are rotatably installed on the turntable 1 through an axis, a sector gear 5 is respectively arranged at one end of the left clamp arm 2 and one end of the right clamp arm 3, and the two sector gears 5 are meshed for transmission, a control tension spring is also arranged between the left and right clamp arms, a front clamp 6 and a rear clamp 7 are respectively arranged at the other ends of the left and right clamp arms, the front clamp 6 is opened and closed by a first opening and closing mechanism 60, and the rear clamp 7 is opened and closed by a second opening and closing mechanism 70, and the rear clamp 7 is also driven by a bag opening drive mechanism 8 to open a distance between it and the front clamp 6, a first pull rod 9 is arranged at the end of the sector gear 5 on the left clamp arm 2 or the right clamp arm 3, and the first pull rod 9 is connected to a packaging bag specification adjustment mechanism 10.

[0020] The first opening and closing mechanism 60 includes a first positioning clamping plate 61 and a rotatable first movable clamping plate 62 installed at the end of the left or right clamping arm 3. The first positioning clamping plate 61 and the first movable clamping plate 62 form a front clamp 6. A retractable first transmission rod 63 is arranged in the left or right clamping arm 3. The first transmission rod 63 is transmission-connected to the first movable clamping plate 62 through a hinge. A first shaft rod 64 extending out of the left or right clamping arm 3 is arranged at the tail of the first transmission rod 63. The left or right clamping arm 3 is provided with a first limiting hole for the first shaft rod 64 to pass through. A front opening and closing roller 65 is arranged on the first shaft rod 64. A front retractable push plate is mounted corresponding to the front opening and closing roller 65. The front opening and closing roller 65 is opened and closed by When the turntable rolls to the position of the front telescopic push plate, the front telescopic push plate extends out to push the opening and closing roller 65 to move and is transmitted to the first transmission rod 63 through the first shaft rod 64. The first transmission rod 63 drives the first movable clamp 62 to rotate so that the first movable clamp leaves the contact with the first positioning clamp 61, thereby opening the front clamp 6. In this way, left and right first spring brackets 66 are arranged on the first shaft rod 64, and a first tension spring 67 is arranged between the first spring bracket 66 and the first positioning clamp 61. Through the first tension spring 67, the first movable clamp can always maintain contact with the first positioning clamp 61, thereby clamping the "M"-shaped front "V"-shaped folded edge on the side of the bag opening of the M bag.

[0021] The second opening and closing mechanism 70 includes a telescopic tube 71 which is installed on the left or right clamp arm 3 and is retractable. A seat body is arranged at the end of the telescopic tube 71. A second positioning clamp plate 72 is arranged on the seat body and is spaced from the end of the telescopic tube 71. A clamp rod 73 which slides along the telescopic tube 71 is arranged inside the telescopic tube 71. The end of the clamp rod 73 extends out of the telescopic tube 71 and contacts or moves away from the second positioning clamp plate 72 to form a rear clamp 7. A second shaft rod 74 is connected to the tail of the clamp rod 73. The left or right clamp arm 3 is provided with a second limiting hole for the second shaft rod 74 to pass through. A rear opening and closing roller 75 is arranged at the end of the second shaft rod 74, corresponding to the rear The opening and closing roller 75 is mounted with a rear telescopic push plate. After the rear opening and closing roller 75 rotates along the turntable and rolls to the position of the rear telescopic push plate, the rear telescopic push plate pushes the rear opening and closing roller 75 to move and is transmitted to the clamping rod 73 through the second shaft rod, thereby driving the clamping rod 73 to disengage from the second positioning clamping plate 72. In this way, the rear clamp can be opened to clamp the "M"-shaped rear "V"-shaped folded edge on the side of the bag opening of the M bag. A second spring bracket 76 is also arranged on the second shaft rod 74, and a second tension spring 77 is arranged between the second spring bracket 76 and the second positioning, so that the rear clamp is kept in a clamping state by the second tension spring 77.

[0022] In the above structure, the front telescopic push plate and the rear telescopic push plate can be combined into a large push plate, which is preferably driven by a cam rocker mechanism to control its reciprocating telescopic movement. Of course, the large push plate can also be installed on the output shaft of the cylinder, which is connected to the air pump through an electromagnetic valve. In this way, the large push plate can simultaneously push the two rear opening and closing rollers 75 and the two front opening and closing rollers 65 on the left and right clamping arms, so that the front clamp and the rear clamp can be opened at the same time.

[0023] The bag opening driving mechanism 8 comprises a transmission seat 81 mounted on the turntable 1, and two guide rods 82 are arranged on the transmission seat 81 to extend and retract along the radial direction of the turntable 1, a connecting block 820 is arranged at the front end of the guide rod 82, a bag opening pull rod 83 is arranged between the connecting block 820 and the second positioning clamping plate 72 on the rear clamp 7, a shift fork 84 is arranged at the rear end of the guide rod 82, and a rotatable swing rod 85 is also arranged on the transmission seat 81, and a shift rod 86 is arranged at one end of the swing rod 85, and the shift rod 86 is placed In the fork groove of the shift fork 84, a bag opening roller 87 is arranged at the other end of the rocker rod 85, and a bag opening cam piece 88 is arranged corresponding to the bag opening roller 87. After the bag opening roller 87 rolls onto the bag opening cam piece as the turntable rotates, it will be transmitted through the rocker rod and drive the shift fork to move, and the shift fork drives the connecting block connected to the guide rod to move, and the connecting block pulls the rear clamp 7 to move through the bag opening pull rod 83, so that the distance between the rear clamp and the front clamp can be widened, so that the bag mouth of the packaging bag is fully opened, which is convenient for the material to be put into the bag.

[0024] The packaging bag specification adjustment mechanism 10 includes an adjustment shaft 101, which is installed and rotated in the transmission seat 81. One end of the adjustment shaft 101 is connected to a first adapter plate 102, and the end of the first adapter plate 102 is transmission-connected to the end of the first pull rod 9. The other end of the adjustment shaft 101 is connected to a second adapter plate 103, and the end of the second adapter plate 103 is provided with a mounting shaft, and a specification adjustment roller 104 is arranged on the mounting shaft. A specification cam piece 1041 is provided corresponding to the specification adjustment roller 104, and the specification cam piece 1041 is installed on a lifting sleeve 105, and the lifting sleeve 105 is sleeved on the turntable column 4. An inclined groove 106 is provided on the peripheral wall of the lifting sleeve 105, and a convex column 107 placed in the inclined groove 106 is provided on the turntable column 4. The lifting sleeve 105 is connected to one end of a lifting rod 108, and the other end of the lifting rod 108 is connected to a rotation drive component 20. The rotation drive component 20 includes a swing block 201, a swing seat 202 and a swing shaft 203. The swing shaft 203 is inserted in the swing seat 202 for rotation, the swing block 201 is installed at one end of the swing shaft 203, and the other end of the swing shaft 203 is transmission-connected to the output shaft of the motor, and the lifting rod 108 is transmission-connected to the swing block 201. Through this structure, the motor can be used to drive the swing shaft to rotate forward and reverse, driving the swing block 201 to swing left and right, so that the lifting sleeve 105 can be pulled forward and reverse by the lifting rod 108, so that the inclined groove 106 on the lifting sleeve 105 can be lifted and lowered along the guide of the convex column, so that the standard cam piece installed on the lifting sleeve 105 can move up and down, so that the stroke of the first pull rod 9 can be adjusted, so that the opening angle of the left clamp arm and the right clamp arm can be adjusted according to the specifications of the packaging bag opening to adapt to packaging bags of more specifications.

[0025] The structure also includes a control system, through which the precise movements of the various motors, cylinders and other controlled components are controlled, so that the entire equipment operates in a coordinated manner.

[0026] By adopting the above technical scheme, the front clamp 6 is opened and closed by the first opening and closing mechanism 60, and the rear clamp 7 is opened and closed by the second opening and closing mechanism 70, so that the front "V"-shaped folded edge of the "M" shape on the side of the bag opening of the M bag is clamped by the front clamp 6, and the rear "V"-shaped folded edge is clamped by the rear clamp 7. The rear clamp 7 is also driven by the bag opening drive mechanism 8 to open the distance between it and the front clamp 6, so that the bag opening can be opened. A first pull rod 9 is provided at the end of the fan-shaped gear 5 on the left clamp arm 2 or the right clamp arm 3, and the first pull rod 9 is connected to the packaging bag specification adjustment mechanism 10, so that the opening angles of the left clamp arm 2 and the right clamp arm 3 can be adjusted according to the bag opening specifications to adapt to the bag opening specifications of the packaging bag or to straighten and close the bag opening, so that it is suitable for bag feeding machines for M-type open packaging bags.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0029] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An M-bag machine clamp, comprising a turntable, a left clamp arm and a right clamp arm, wherein the turntable is mounted on a rotating shaft, the rotating shaft is mounted in a turntable column, the rotating shaft is driven by a motor, the left clamp arm and the right clamp arm are rotatably mounted on the turntable through a shaft, a sector gear is respectively arranged at one end of the left clamp arm and one end of the right clamp arm, and the two sector gears are meshed for transmission, characterized in that: The other ends of the left and right clamp arms are respectively provided with a front clamp and a rear clamp. The front clamp is opened and closed by a first opening and closing mechanism, and the rear clamp is opened and closed by a second opening and closing mechanism. The rear clamp is also driven by a bag opening drive mechanism to distance itself from the front clamp. A first pull rod is provided at the fan-shaped gear end on the left clamp arm or the right clamp arm, and the first pull rod is connected to the packaging bag specification adjustment mechanism.

2. The M-bag machine clamp according to claim 1, characterized in that: The first opening and closing mechanism includes a first positioning clamp plate and a rotatable first movable clamp plate installed at the end of the left or right clamp arm, the first positioning clamp plate and the first movable clamp plate form the front clamp, a retractable first transmission rod is arranged in the left or right clamp arm, the first transmission rod is connected to the first movable clamp plate through a hinge, a first shaft rod extending out of the left or right clamp arm is arranged at the tail of the first transmission rod, the left or right clamp arm is provided with a first limiting hole for the first shaft rod to pass through, a front opening and closing roller is arranged on the first shaft rod, a front retractable push plate is arranged corresponding to the front opening and closing roller frame, left and right first spring brackets are arranged on the first shaft rod, and a first tension spring is arranged between the first spring bracket and the first positioning clamp plate.

3. The M-bag machine clamp according to claim 1, characterized in that: The second opening and closing mechanism includes a telescopic tube installed on the left or right clamp arm, a seat body is arranged at the end of the telescopic tube, a second positioning clamp plate is arranged at a distance from the end of the telescopic tube, a clamp rod is arranged in the telescopic tube and slides along the telescopic tube, the end of the clamp rod extends out of the telescopic tube and contacts or moves away from the second positioning clamp plate to form the rear clamp, the tail of the clamp rod is connected to the second shaft rod, the left or right clamp arm is provided with a second limiting hole for the second shaft rod to pass through, the end of the second shaft rod is arranged with a rear opening and closing roller, a rear telescopic push plate is arranged corresponding to the rear opening and closing roller frame, a second spring bracket is also arranged on the second shaft rod, and a second tension spring is arranged between the second spring bracket and the second positioning.

4. The M-bag machine clamp according to claim 1, characterized in that: The bag opening drive mechanism includes a transmission seat installed on the turntable, a guide rod which can be extended and retracted along the radial direction of the turntable is arranged on the transmission seat, a connecting block is arranged at the front end of the guide rod, a bag opening pull rod is arranged between the connecting block and the rear clamp, a shift fork is arranged at the rear end of the guide rod, and a rotatable rocker arm is also arranged on the transmission seat, a shift rod is arranged at one end of the rocker arm, and the shift rod is placed in the fork groove of the shift fork, a bag opening roller is arranged at the other end of the rocker arm, and a bag opening cam piece is arranged corresponding to the bag opening roller.

5. The M-bag machine clamp according to claim 1, characterized in that: The packaging bag specification adjustment mechanism includes an adjusting shaft, one end of the adjusting shaft is connected to a first adapter plate, the end of the first adapter plate is transmission-connected to the end of the first pull rod, the other end of the adjusting shaft is connected to a second adapter plate, the end of the second adapter plate is provided with a mounting shaft, a specification adjustment roller is provided on the mounting shaft, a specification cam piece is provided corresponding to the specification adjustment roller, the specification cam piece is installed on a lifting sleeve, the lifting sleeve is provided on the turntable column, an inclined groove is provided on the peripheral wall of the lifting sleeve, a convex column placed in the inclined groove is provided on the turntable column, the lifting sleeve is connected to one end of a lifting pull rod, and the other end of the lifting pull rod is connected to a rotating drive assembly.

6. The M bag machine clamp according to claim 5, characterized in that: The rotary drive assembly includes a swing block, a swing seat and a swing shaft. The swing shaft is inserted in the swing seat and rotates. The swing block is installed at one end of the swing shaft. The other end of the swing shaft is transmission connected to the output shaft of the motor. The lifting rod is transmission connected to the swing block.

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