Bag clamping assembly and station packaging machine

Abstract

Compared with the prior art, the bag clamping assembly and the station packaging machine have the advantages that packaging bags are clamped through the elastic force of the elastic piece, and clamping is stable; when a packaging bag needs to be released, the rotating shaft is rotated, the cam pushes the end of the first clamping jaw, so that the first clamping jaw slides against the elastic force of the elastic piece, the first clamping end and the second clamping end are separated, the packaging bag can be released, the packaging bag can be effectively clamped in the mode, and operation is convenient and easy; the bag clamping assembly comprises a mounting plate; a rotating shaft; the multiple sets of clamping jaw assemblies are arranged along the rotating shaft, and each clamping jaw assembly comprises a second clamping jaw connected with the mounting plate, a first clamping jaw in guide sliding fit with the second clamping jaw and an elastic piece arranged between the first clamping jaw and the second clamping jaw; the rotating shaft is provided with a plurality of cams in one-to-one correspondence with the clamping jaw assemblies, and the end, away from the first clamping end, of the first clamping jaw is matched with the cams.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing equipment technical field especially relates to a bag clamping subassembly and station packing machine. BACKGROUND

[0002] The utility model discloses a station packing machine for food bag packing, including to packing bag conveying unit, packing bag conveying unit includes chain type conveying mechanism, and chain type conveying mechanism drives the rotation of chain through drive motor, and the bag clamping subassembly of to packing bag positioning is installed on chain, and drive motor drives the bag clamping subassembly to drive when chain moves, thereby realizes the effect of to packing bag conveying.

[0003] The bag clamping subassembly requires effectively clamping packing bag and being convenient for releasing packing bag, and the bag clamping subassembly of current packing machine has the problems such as not firm clamping bag and inconvenient operation, thereby influencing the overall operation efficiency of packing machine. UTILITY MODEL CONTENTS

[0004] The utility model discloses a bag clamping subassembly and multi-station packing machine to solve the above -mentioned problem.

[0005] To realize above -mentioned purpose, the utility model discloses a technical scheme as follows: a bag clamping subassembly, comprising:

[0006] Mounting plate, parallel interval arrangement has two, for with chain conveying mechanism connection;

[0007] Pivot, both ends with two mounting plate rotation cooperation;

[0008] Claw subassembly, along the axial even interval of pivot and set up multiple groups, including with mounting plate connection's second claw, with the second claw guide sliding cooperation's second claw and set up between first claw and second claw's elastic part, first claw includes first clamping end, second claw includes second clamping end, under the elastic force of elastic part, first claw and second claw abutment cooperation;

[0009] Pivot on setting up with claw subassembly one to one corresponding multiple cams, first claw away from first clamping end's one end with cam cooperation.

[0010] Further, the guide sliding direction of the first claw and the second claw is perpendicular to the axis direction of the pivot.

[0011] Further, the end portion of the first claw away from the first clamping end is rotationally provided with a first wheel, the axis direction of the first wheel is parallel to the axis of the pivot, and the outer circumferential surface of the first wheel cooperates with the cam.

[0012] Further, the first claw is provided with a first plate, the second claw is provided with a second plate, the first plate and the second plate are spaced apart, and the elastic part is arranged between the first plate and the second plate.

[0013] Further, the first clamping end comprises a first clamping surface facing the rotating shaft, the second clamping end comprises a second clamping surface facing the first clamping surface, the first plate is arranged on the side of the second plate close to the rotating shaft, and the elastic member is a compression spring, and the two ends of the compression spring are respectively in abutment with the first plate and the second plate.

[0014] Further, at least two support rods are arranged in parallel and at intervals, the second clamping jaw is provided with a support sleeve matched with the support rod, and the support rod is arranged in parallel with the rotating shaft.

[0015] Further, the two ends of the rotating shaft are provided with side plates, and the support rod is connected with the two side plates.

[0016] Further, the side plate is in rotating cooperation with the rotating shaft, and the side plate is in circumferential limiting cooperation with the mounting plate.

[0017] Further, the mounting plate is provided with a positioning pin, the side plate is provided with a positioning hole matched with the positioning pin, and the positioning hole is arranged at a position different from the rotating shaft.

[0018] Further, the application also provides a work station packaging machine comprising the bag clamping assembly, and further comprising two chain transmission assemblies arranged in parallel and at intervals, a plurality of bag clamping assemblies are uniformly arranged between the two chain transmission assemblies along the transmission direction of the chain transmission assemblies, and the positioning plate of the bag clamping assembly is connected with the chain assembly.

[0019] Compared with the prior art, the bag clamping assembly and the work station packaging machine have the following beneficial effects: the elastic force of the elastic member is used to clamp the packaging bag, and the clamping is stable; when it is necessary to release the packaging bag, the rotating shaft is rotated, the cam pushes the end of the first clamping jaw, so that the first clamping jaw slides against the elastic force of the elastic member, the first clamping end is separated from the second clamping end, and the packaging bag can be released, this mode can effectively clamp the packaging bag, and the operation is convenient and simple; the bag clamping assembly comprises a mounting plate, a rotating shaft and a clamping jaw assembly, a plurality of groups of the clamping jaw assembly are arranged along the shaft of the rotating shaft, the clamping jaw assembly comprises a second clamping jaw connected with the mounting plate, a first clamping jaw in sliding cooperation with the second clamping jaw and an elastic member arranged between the first clamping jaw and the second clamping jaw, a plurality of cams corresponding to the clamping jaw assembly are arranged on the rotating shaft, and one end of the first clamping jaw away from the first clamping end is matched with the cam. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the bag clamping assembly of the utility model Figure 1 .

[0021] Figure 2 It is a whole structure schematic diagram of the bag clamping assembly of the utility model Figure 1 It is a local enlarged structure schematic diagram of position A in the bag clamping assembly of the utility model.

[0022] Figure 3 It is the whole structure schematic diagram of the bag clamping assembly of the utility model Figure 2 .

[0023] Figure 4 It is Figure 3 The utility model discloses a bag clamping assembly in the partial enlarged structure schematic drawing of B place.

[0024] Figure 5 It is Figure 4 The utility model discloses a bag clamping assembly in the partial enlarged structure schematic drawing of C place.

[0025] Figure 6 It is the whole structure schematic diagram of the bag clamping assembly of the utility model Figure 3 .

[0026] Figure 7 It is Figure 6 The utility model discloses a bag clamping assembly in the partial enlarged structure schematic drawing of D place.

[0027] Figure 8 It is the whole structure schematic diagram of the bag clamping assembly of the utility model Figure 4 .

[0028] Figure 9 It is Figure 8 The utility model discloses a bag clamping assembly in the partial enlarged structure schematic drawing of F place.

[0029] Figure 10 It is Figure 9 The utility model discloses a bag clamping assembly in the partial enlarged structure schematic drawing of J place.

[0030] Figure 11 It is the whole structure schematic diagram of the station packaging machine of the utility model.

[0031] In the drawing: 1, bag clamping assembly;10, mounting plate;101, positioning pin;11, side plate;110, lower shield;111, upper shield;113, positioning hole;12, rotating shaft;120, driving part;13, clamping jaw assembly;131, cam;132, first clamping jaw;1320, first clamping end;13200, first clamping surface;1321, first wheel;1322, first plate;133, second clamping jaw;1330, second clamping end;13300, second clamping surface;1331, first strip hole;1332, second strip hole;13320, rim plate;1333, second plate;1334, support sleeve;1323, second wheel;134, support partition;135, elastic part;136, support rod;137, guide rod;2, packaging bag;3, chain transmission assembly. DETAILED DESCRIPTION

[0032] The utility model will be explained in further detail in combination with the drawings. The drawings are simplified schematic diagrams, which only schematically show the basic structure of the utility model, and thus only show the components related to the utility model.

[0033] Example one

[0034] Please refer to Figures 1-5 As a specific embodiment, the technical scheme of the utility model is as follows: a bag clamping assembly, comprising:

[0035] Two mounting plates 10 are arranged in parallel and at intervals, and are used to be connected with a chain conveying mechanism;

[0036] A rotating shaft 12 is rotatably connected with the two mounting plates 10 at both ends;

[0037] A plurality of groups of clamping jaw assemblies 13 are arranged at intervals along the axial direction of the rotating shaft 12, each group of clamping jaw assemblies 13 comprises a second clamping jaw 133 connected with the mounting plate 10, a first clamping jaw 132 slidingly guided by the second clamping jaw 133, and an elastic member 135 arranged between the first clamping jaw 132 and the second clamping jaw 133, the first clamping jaw 132 comprises a first clamping end 1320, the second clamping jaw 133 comprises a second clamping end 1330, and the first clamping end 1320 and the second clamping end 1330 are in abutting engagement under the elastic force of the elastic member 135;

[0038] A plurality of cams 131 corresponding to the clamping jaw assemblies 13 are arranged on the rotating shaft 12, and one end of the first clamping jaw 132 away from the first clamping end 1320 is matched with the cam 131.

[0039] Specifically, referring to Figures 1-5 The specific structure of the bag clamping assembly provided by the present application is as follows: two mounting plates 10 are arranged in parallel and at intervals, the rotating shaft 12 is rotatably connected with the two mounting plates 10 at both ends, a plurality of clamping jaw assemblies 13 are arranged between the two mounting plates 10 along the axial direction of the rotating shaft 12 on one side of the rotating shaft 12, and each two clamping jaw assemblies 13 form a group, so that a plurality of groups are formed on one side of the rotating shaft 12, and during operation, the two clamping jaw assemblies 13 of each group clamp the two sides of the packaging bag 2 respectively, so as to achieve the purpose of clamping and fixing the packaging bag 2, and referring to Figure 4 、 Figure 5, the specific structure of the clamping jaw assembly 13 is: including a second clamping jaw 133, the second clamping jaw 133 is connected with the mounting plate 10, the second clamping jaw 133 is arranged in the direction away from the rotating shaft 12, the first clamping jaw 132 is slidably guided on the second clamping jaw 133, the first clamping jaw 132 can slide in the direction close to and away from the rotating shaft 12, the elastic element 135 is arranged between the first clamping jaw 132 and the second clamping jaw 133, the rotating shaft 12 is provided with a plurality of cams 131 corresponding to a plurality of clamping assemblies, and the first clamping jaw 132 is slidably guided on the second clamping jaw 133. Figure 5 , the initial state of the clamping jaw assembly 13, at this time the highest point of the cam 131 is not in contact with the end of the first clamping jaw 132, under the action of the elastic force of the elastic element 135, the first clamping end 1320 and the second clamping end 1330 are in abutment and are in the clamping state, so as to clamp the edge of the packaging bag 2, the packaging bag 2 is clamped by the elastic force of the elastic element 135, and the clamping is stable; when it is necessary to release the packaging bag 2, the rotating shaft 12 is rotated, the cam 131 pushes the end of the first clamping jaw 132, so that the first clamping jaw 132 slides against the elastic force of the elastic element 135, and the first clamping end 1320 is separated from the second clamping end 1330, so that the packaging belt can be released. This way can effectively clamp the packaging bag 2, and the operation is convenient and simple.

[0040] Further, as a specific embodiment, the sliding direction of the first clamping jaw 132 and the second clamping jaw 133 is perpendicular to the axis direction of the rotating shaft 12. Specifically, the second clamping jaw 133 is arranged in the direction perpendicular to the rotating shaft 12, and the guiding direction of the first clamping jaw 132 and the second clamping jaw 133 is also perpendicular to the axis of the rotating shaft 12. Through this setting mode, the cam 131 can drive the first clamping jaw 132 to move, and the transmission is more efficient.

[0041] Further, as a preferred embodiment, referring to Figure 5, the end of the first clamping jaw 132 away from the first clamping end 1320 is rotationally provided with a first wheel 1321, the axis direction of the first wheel 1321 is parallel to the axis of the rotating shaft 12, and the outer circumferential surface of the first wheel 1321 is matched with the cam 131. Specifically, the end of the first clamping jaw 132 is provided with a connecting lug, the first wheel 1321 is rotationally provided through the connecting lug, the axis of the first wheel 1321 is arranged in parallel with the axis of the rotating shaft 12, the wheel surface of the first wheel 1321 is in contact and matched with the cam 131, when the cam 131 rotationally drives the first clamping jaw 132, the first wheel 1321 can be forced to move, the outer circumferential surface of the cam 131 is in rolling frictional cooperation with the first wheel 1321, the frictional resistance is reduced, and the wear of the cam 131 is reduced; wherein the first wheel 1321 can adopt any one of a rolling bearing, a rubber roller and a plastic roller, and is preferably a rolling bearing, the outer ring of the rolling bearing is made of metal and will not be deformed when being extruded with the cam 131, so as to ensure the driving accuracy of the first clamping jaw 132 and the opening and closing accuracy of the clamping jaw assembly 13.

[0042] Further, as a specific embodiment, the first clamping jaw 132 is provided with a first plate 1322, the second clamping jaw 133 is provided with a second plate 1333, the first plate 1322 is arranged in parallel and spaced apart from the second plate 1333, and the elastic member 135 is arranged between the first plate 1322 and the second plate 1333. Referring to Figure 5 , the first clamping jaw 132 is integrally provided with the first plate 1322, the second clamping jaw 133 is provided with the second plate 1333 arranged in parallel and spaced apart from the first plate 1322, and the elastic member 135 is arranged between the first plate 1322 and the second plate 1333. Through this arrangement, the elastic member 135 is facilitated to be arranged.

[0043] Further, as a specific embodiment, the first clamping end 1320 includes a first clamping surface 13200 facing the rotating shaft 12, the second clamping end 1330 includes a second clamping surface 13300 facing the first clamping surface 13200, the first plate 1322 is arranged on the side of the second plate 1333 close to the rotating shaft 12, and the elastic member 135 is a compression spring, the two ends of the compression spring respectively abut against the first plate 1322 and the second plate 1333. Specifically, the first clamping jaw 132 includes the first clamping end 1320 bent towards the second clamping jaw 133, the first clamping surface 13200 is the side of the first clamping end 1320 close to the rotating shaft 12, and the elastic member 135 is a compression spring arranged between the first plate 1322 and the second plate 1333. Under the action of the elastic force of the compression spring, the first clamping surface 13200 can abut against the second clamping surface 13300, at this time, the first clamping jaw 132 is in a clamping state, when the cam 131 drives the first clamping jaw 132, the first clamping jaw 132 can push the compression spring to be extruded, the first clamping surface 13200 moves away from the second clamping surface 13300, and the first clamping jaw 132 switches to a releasing state.

[0044] As a preferred embodiment, rubber pads are arranged on the first clamping end 1320 and the second clamping end 1330, and the first clamping surface 13200 and the second clamping surface 13300 are the mating surfaces of the two rubber pads. By arranging the rubber pads, the damage of the clamping force to the packaging bag 2 can be reduced, the friction between the clamping surface and the packaging bag 2 is improved, and the clamping is more firm.

[0045] Further, as a specific embodiment, a guide rod 137 is detachably fixed on one of the first plate 1322 and the second plate 1333, and a compression spring is sleeved outside the guide rod 137. By this arrangement, the guide rod 137 can guide the compression spring, avoid the compression spring from being bent and separated from the clamping assembly, and improve the stability.

[0046] Further, as a specific embodiment, the cooperation mode of the first clamping jaw 132 and the second clamping jaw 133 is that, referring to Figure 5 、 Figure 9 , the first clamping jaw 132 and the second clamping jaw 133 are guided and slidably matched on the side close to each other, the two ends of the second clamping jaw 133 are respectively provided with a first slot 1331 and a second slot 1332, the length direction of the first slot 1331 and the second slot 1332 is perpendicular to the rotation shaft 12, the two ends of the first clamping jaw 132 are respectively provided with a second wheel 1323, the two second wheels 1323 are respectively guided and matched with the first slot 1331 and the second slot 1332, the axis of the second wheel 1323 is parallel to the rotation shaft 12, referring to Figure 10 , the inner side wall of the first slot 1331 and the second slot 1332 close to the first clamping jaw 132 is respectively provided with a rim plate 13320, and the rim plate 13320 is limited and matched with the second wheel 1323.

[0047] Further, as a specific embodiment, referring to Figures 6-10 , the bag clamping assembly 1 further comprises at least two support rods 136 which are arranged in parallel and at intervals, the second clamping jaw 133 is provided with a support sleeve 1334 which is matched with the support rod 136 one by one, and the support rod 136 is arranged in parallel with the rotation shaft 12.

[0048] Further, the two ends of the rotation shaft 12 are respectively provided with a side plate 11, and the support rod 136 is connected with the two side plates 11.

[0049] Specifically, the two installation plates 10 are located on one side of each other, and each is provided with a side plate 11 connected with the connecting plate. At least two supporting rods 136 are arranged between the two side plates 11. At least two supporting sleeves 1334 are arranged on the second clamping jaw 133. The two supporting rods 136 are connected with the two side plates 11. The second clamping jaw 133 is connected with the supporting rod 136 through the supporting sleeve 1334, thereby providing support for the second clamping jaw 133. The supporting sleeve 1334 is guided and slidably fitted on the supporting rod 136. The supporting rods 136 are locked by locking screws. In this way, the clamping assembly forms a detachable assembly with the cam 131 and the installation plate 10 through the side plate 11, facilitating assembly. The supporting rod 136 and the supporting sleeve 1334 are guided and slidably fitted, facilitating adjustment of the position of the clamping jaw assembly 13 to ensure adaptation to the size of the packaging bag 2.

[0050] Specifically, the two side plates 11 are detachably provided with a lower guard 110 and an upper guard 111. The guards can protect the internal clamping jaw assembly 13. The two side plates are connected by the upper and lower guards, so that the entire bag clamping assembly is a whole, facilitating assembly and installation.

[0051] Further, as a preferred embodiment, referring to Figure 7 , Figure 9 , the side plate 11 is rotationally fitted with the rotating shaft 12, and the side plate 11 is circumferentially limited in position with the installation plate 10. Specifically, the side plate 11 is provided with a circular hole through which the rotating shaft 12 passes and is guided in position with the rotating shaft 12, thereby rotationally fitting the side plate 11 with the rotating shaft 12 and circumferentially limiting the side plate 11 in position with the installation plate 10. The installation plate 10 and the side plate 11 can jointly rotate around the rotating shaft 12, thereby ensuring the relative position of the installation plate 10 and the clamping jaw assembly 13. During operation, the installation plate 10 is connected with the chain transmission assembly 3 of the work station packaging machine, thereby ensuring effective support of the clamping jaw assembly 13 by the installation plate 10.

[0052] Further, as a specific embodiment, referring to Figure 7 , Figure 9 , the installation plate 10 is provided with a positioning pin 101, and the side plate 11 is provided with a positioning hole 113 adapted to the positioning pin 101. The positioning hole 113 is arranged at a position different from the rotating shaft 12. Specifically, the installation plate 10 is detachably inserted with the positioning pin 101, and the side plate 11 is provided with the positioning hole 113 adapted to the positioning pin 101. The positioning pin 101 can be inserted into the positioning hole 113 to position the side plate 11. The positioning pin 101 and the installation shaft can jointly position and support the side plate 11. This way is convenient, simple, firm, reliable, and facilitates assembly and disassembly.

[0053] Example Two

[0054] Further, as a specific embodiment, referring to Figure 11 The application also provides a station packaging machine, comprising the bag clamping assembly 1 described above, and further comprising two chain transmission assemblies 3 arranged in parallel and at intervals, a plurality of bag clamping assemblies 1 are evenly arranged between the two chain transmission assemblies 3 along the transmission direction of the chain transmission assemblies 3, and the positioning plate of the bag clamping assembly 1 is connected with the chain assembly.

[0055] Specifically, referring to Figure 4 A strip-shaped driving member 120 is arranged at at least one end of the rotating shaft 12, and the driving member 120 is non-rotatably connected with the rotating shaft 12. In actual application, the bag clamping assembly 1 is connected with the two chain transmission assemblies 3 through the mounting plate 10, and the two chain transmission assemblies 3 can drive the bag clamping assembly 1 to move along a circular track. A circular guide groove adapted to the running track of the bag clamping assembly 1 is arranged on the side wall of the frame of the station packaging machine, and the end of the rotating shaft 12 provided with the driving member 120 is located in the circular guide groove. The two ends of the circular guide groove are of a circular structure, and the middle region comprises two parallel straight guide rails. When the chain transmission assembly 3 drives the bag clamping assembly 1 to move to the parallel straight guide rails, the rotating shaft 12 is in a first state, at which time the highest point of the cam 131 is not in contact with the clamping jaw assembly 13, and the clamping jaw assembly 13 is in a Figure 5 clamping state as shown. When the chain transmission assembly 3 drives the bag clamping assembly 1 to move to the two ends of the circular guide rail, the driving member 120 is limited by the guide rail, so that the driving member 120 rotates, thereby driving the rotating shaft 12 to rotate. When the rotating shaft 12 rotates, the cam 131 can drive the clamping jaw assembly 13, so that the clamping jaw assembly 13 is in an open state. The chain transmission assembly 3 continues to transmit, thereby driving the chain transmission assembly 3 to move to the straight guide rail, and then the clamping jaw assembly 13 returns to the clamping state. In this way, when the bag clamping assembly 1 reaches the two ends of the chain transmission assembly 3, the clamping jaw assembly 13 is in a releasing state, and when the bag clamping assembly 1 leaves the two ends, the clamping jaw assembly 13 is in a clamping state, so that the bag clamping assembly 1 can clamp or release the packaging bag 2 at the two ends.

[0056] Further, as a preferred embodiment, a plurality of support partitions 134 are evenly arranged on the rotating shaft 12, so that the support shaft can be supported by the support partitions 134.

[0057] Obviously, the above embodiments are only examples for clearly illustrating the application, and are not intended to limit the application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not enumerated, and the changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A bag clamping assembly, characterized in that, include: Mounting plates (10) are provided in two parallel intervals for connection with the chain conveyor mechanism; The rotating shaft (12) is rotatably engaged with the two mounting plates (10) at both ends; The gripper assembly (13) is provided with multiple sets evenly spaced along the axial direction of the rotating shaft (12), including a second gripper (133) connected to the mounting plate (10), a second gripper (133) that slides with the second gripper (133) and an elastic member (135) disposed between the first gripper (132) and the second gripper (133). The first gripper (132) includes a first clamping end (1320), and the second gripper (133) includes a second clamping end (1330). Under the elastic force of the elastic member (135), the first gripper (132) and the second gripper (133) abut against each other. The rotating shaft (12) is provided with a plurality of cams (131) that correspond one-to-one with the gripper assembly (13), and the end of the first gripper (132) away from the first clamping end (1320) cooperates with the cam (131).

2. A bag clamping assembly according to claim 1, characterized in that, The guiding sliding direction of the first gripper (132) and the second gripper (133) is perpendicular to the axis of the rotating shaft (12).

3. A bag clamping assembly according to claim 1, characterized in that, The first gripper (132) is rotatably provided with a first wheel (1321) at the end away from the first gripping end (1320). The axis of the first wheel (1321) is parallel to the axis of the rotating shaft (12), and the outer peripheral surface of the first wheel (1321) cooperates with the cam (131).

4. A bag clamping assembly according to any one of claims 1-3, characterized in that, The first gripper (132) is provided with a first plate (1322), the second gripper (133) is provided with a second plate (1333), the first plate (1322) and the second plate (1333) are spaced apart, and the elastic element (135) is provided between the first plate (1322) and the second plate (1333).

5. A bag clamping assembly according to claim 4, characterized in that, The first clamping end (1320) includes a first clamping surface (13200) facing the rotating shaft (12), and the second clamping end (1330) includes a second clamping surface (13300) facing the first clamping surface (13200). The first plate (1322) is disposed on the side of the second plate (1333) near the rotating shaft (12). The elastic element (135) is a compression spring, and the two ends of the compression spring abut against the first plate (1322) and the second plate (1333) respectively.

6. A bag clamping assembly according to claim 1, characterized in that, It also includes at least two support rods (136) arranged in parallel at intervals, and the second gripper (133) is provided with a support sleeve (1334) that cooperates with the support rods (136) one by one. The support rods (136) are arranged in parallel with the rotating shaft (12).

7. A bag clamping assembly according to claim 6, characterized in that, Both ends of the rotating shaft (12) are provided with side plates (11), and the support rod (136) is connected to the two side plates (11).

8. A bag clamping assembly according to claim 7, characterized in that, The side plate (11) is rotatably engaged with the rotating shaft (12), and the side plate (11) is circumferentially limited to the mounting plate (10).

9. A bag clamping assembly according to claim 8, characterized in that, The mounting plate (10) is provided with a positioning pin (101), and the side plate (11) is provided with a positioning hole (113) that is adapted to the positioning pin (101). The positioning hole (113) is located at a position different from that of the rotating shaft (12).

10. A station packaging machine, characterized in that, The bag clamping assembly (1) according to any one of claims 1-9 is further comprising two chain drive assemblies (3) arranged in parallel and spaced apart. Along the transmission direction of the chain drive assembly (3), a plurality of bag clamping assemblies (1) are evenly spaced between the two chain drive assemblies (3), and the positioning plate of the bag clamping assembly (1) is connected to the chain assembly.

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