A machine clamping mechanism of an M-bag packaging machine

Abstract

The application discloses a kind of M bag packing machine clamping mechanisms, with: rotary disc body, rotary installation is in rack;Left clamping mechanism and right clamping mechanism, can clamping the two sides of M bag;Left and right moving mechanism, left clamping mechanism and right clamping mechanism are installed on rotary disc body by left and right moving mechanism;Outer machine clamping mechanism and inner machine clamping mechanism, left clamping mechanism and right clamping mechanism are equipped with outer machine clamping mechanism and inner machine clamping mechanism;Outer machine clamping mechanism and inner machine clamping mechanism can clamping the two layers of M bag respectively;Opening and closing mechanism, setting in rack, opening and closing mechanism can drive outer machine clamping mechanism and inner machine clamping mechanism relative motion.Can clamping the two layers of M bag body, can realize the two sides of M bag mutual close, facilitate opening bag mouth, work efficiency is high, degree of automation is high.Can clamping the two layers of M bag body, can realize the two sides of M bag mutual close, facilitate opening bag mouth, work efficiency is high, degree of automation is high.

Description

Technical Field

[0001] This invention belongs to the field of packaging machine technology, and particularly relates to a clamping mechanism for an M-bag packaging machine. Background Technology

[0002] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems:

[0003] M-bag packaging machines need to meet very complex operational requirements. For example, an M-bag has two layers that need to be clamped, and then it needs to be opened. However, to open the bag, the two sides of the M-bag need to be brought close together; otherwise, the bag opening cannot be opened, requiring a series of complex actions. Traditional equipment cannot meet the requirements of these complex actions.

[0004] CN206107694U discloses a bag-opening device for a bag packaging machine, including a bracket. A bag-clamping device is fixedly installed at the middle position below the bracket. The bag-clamping device includes a first cylinder and clamping plates. The first cylinder is vertically fixed on the bracket, and the cylinder rod of the first cylinder is connected to two pairs of opposing clamping plates. A bag-opening device is arranged between the two pairs of clamping plates. The bag-opening device includes a second cylinder, a suction nozzle, and a vacuum tube. A pair of suction nozzles are symmetrically arranged between the two pairs of clamping plates, and one end of the vacuum tube is connected to the suction nozzle. However, this method cannot solve the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a clamping mechanism for an M-bag packaging machine, which can clamp the two layers of the M-bag, and can bring the two sides of the M-bag close to each other, making it easy to open the bag opening. It has high working efficiency and a high degree of automation.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a clamping mechanism for an M-bag packaging machine, comprising:

[0007] The turntable is rotatably mounted on the frame;

[0008] The left and right clamping mechanisms can clamp both sides of the M-bag;

[0009] A left-right moving mechanism is provided, wherein the left clamping mechanism and the right clamping mechanism are mounted on the turntable body via the left-right moving mechanism;

[0010] The outer clamping mechanism and the inner clamping mechanism are provided on both the left clamping mechanism and the right clamping mechanism; the outer clamping mechanism and the inner clamping mechanism can respectively clamp the two layers of the M bag;

[0011] An opening and closing mechanism is provided on the frame, which can drive the outer clamping mechanism and the inner clamping mechanism to move relative to each other.

[0012] The left and right moving mechanism has:

[0013] Left and right slide rails are installed on the turntable body;

[0014] There are two slide blocks, which are slidably mounted on the left and right slide rails; the left clamping mechanism and the right clamping mechanism are respectively mounted on the two slide blocks;

[0015] The left and right drive mechanism can drive the two slide blocks to slide on the left and right guide rails.

[0016] Each of the two slide blocks is provided with a left-right drive mechanism, and the left-right drive mechanism has the following features:

[0017] A movable toothed plate is rotatably mounted on the turntable near its central portion; the first end of the movable toothed plate is provided with a toothed shape.

[0018] The intermediate swing plate has its first end hinged to the second end of the moving toothed plate; the second end of the intermediate swing plate is hinged to the slide block.

[0019] The two moving gears of the two slides mesh with each other;

[0020] The left and right power mechanisms can drive the moving gears to rotate.

[0021] The left and right power mechanisms include a swing arm, which is hinged to the turntable near its middle. The first end of the swing arm is hinged to the first end of the movable pull rod, and the second end of the movable pull rod is hinged to the movable gear.

[0022] The external clamping mechanism has:

[0023] A clamping base is mounted on the slide;

[0024] The outdoor unit clamp is slidably mounted on the clamp base;

[0025] An external fixing clip is fixedly installed on the first end of the outdoor unit clamping tube;

[0026] The outdoor unit clamp rod is slidably installed inside the outdoor unit clamp tube;

[0027] An external movable clamp is installed on the first end of the external clamping rod, and the external movable clamp can be adapted to the external fixed clamp to clamp the bag body.

[0028] The internal clamping mechanism has:

[0029] The inner unit clamp is slidably mounted on the clamp base;

[0030] An internal fixing clip is fixedly installed on the first end of the internal clamping tube;

[0031] The inner clamp rod is slidably installed inside the inner clamp tube, and the inner clamp rod can be adapted to the inner fixed clamp to clamp the bag body.

[0032] The opening and closing mechanism has:

[0033] The opening and closing gear is rotatably mounted on the machine clamp base;

[0034] Opening and closing racks are provided on both the outer and inner clamp tubes, and the opening and closing racks on the outer and inner clamp tubes respectively mesh with the two sides of the opening and closing gear.

[0035] The opening and closing power mechanism is capable of driving the opening and closing rack to move.

[0036] The opening and closing power mechanism has the following features:

[0037] Mounting bracket, mounted on the turntable body;

[0038] The sliding guide rod is slidably installed within the mounting base;

[0039] The opening / closing lever is connected near its middle section to the first end of the sliding guide rod.

[0040] An opening / closing lever is provided on the inner unit clamp tube, and the opening / closing lever can be adapted to the opening / closing lever.

[0041] The left clamping mechanism and the right clamping mechanism are connected by a first return spring.

[0042] The inner unit clamping rod and the outer unit clamping rod are equipped with a second return spring.

[0043] One of the above technical solutions has the following advantages or beneficial effects: it can clamp the two layers of bag M, can bring the two sides of bag M close to each other, making it easy to open the bag opening, with high work efficiency and high degree of automation. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the clamping mechanism of the M-bag packaging machine provided in an embodiment of the present invention;

[0045] Figure 2 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0046] Figure 3 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0047] Figure 4 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0048] Figure 5 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0049] Figure 6 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0050] Figure 7 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0051] Figure 8 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0052] Figure 9 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0053] Figure 10 for Figure 1 A schematic diagram of the clamping mechanism of the M-bag packaging machine;

[0054] The markings in the above figures are all:

[0055] 31. Turntable body,

[0056] 41. Left and right moving mechanism; 411. Swing rod; 412. Moving pull rod; 413. Moving gear; 414. Middle swing plate; 415. Slide block; 416. Left and right slide rails.

[0057] 42. Opening and closing mechanism; 421. Mounting base; 422. Sliding guide rod; 423. Opening and closing lever; 424. Opening and closing block; 425. Opening and closing rack; 426. Opening and closing gear.

[0058] 44. Left clamping mechanism;

[0059] 45. Right clamping mechanism;

[0060] 46. ​​Outdoor unit clamping mechanism; 461. Clamping base; 462. Outdoor unit clamping tube; 463. Outdoor unit clamping rod; 464. External fixed clamp; 465. External movable clamp.

[0061] 47. Indoor unit clamping mechanism; 471. Indoor unit clamping tube; 472. Indoor fixed clamp; 473. Indoor unit clamping rod. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] Example 1

[0064] See Figures 1-10 A clamping mechanism for an M-bag packaging machine includes: a turntable body 31 rotatably mounted on a frame; a left clamping mechanism 44 and a right clamping mechanism 45 capable of clamping both sides of an M-bag; a left-right moving mechanism 41, wherein the left clamping mechanism 44 and the right clamping mechanism 45 are mounted on the turntable body 31 via the left-right moving mechanism 41, enabling the two sides of the M-bag to move closer together, facilitating the opening of the bag; an outer clamping mechanism 46 and an inner clamping mechanism 47, wherein the left clamping mechanism 44 and the right clamping mechanism 45 are each equipped with an outer clamping mechanism 46 and an inner clamping mechanism 47; the outer clamping mechanism 46 and the inner clamping mechanism 47 can respectively clamp the two layers of the M-bag, facilitating the opening of the bag; and an opening and closing mechanism 42, mounted on the frame, which can drive the outer clamping mechanism 46 and the inner clamping mechanism 47 to move relative to each other, thereby driving the clamps to open or close, clamping or releasing the bag. It can hold two layers of bag bodies of M bag, and can bring the two sides of M bag close together, making it easy to open the bag opening. It has high work efficiency and a high degree of automation.

[0065] This mechanism adopts an integrated structural design with rotary indexing, left and right centering pre-tightening, internal and external layer clamping, and station-based fixed-point opening and closing. It eliminates the need for manual assistance in adjusting the bag opening and can automatically complete the entire process of M-bag positioning, closing, layer clamping, and opening and separation. The overall structure has strong linkage, high positioning accuracy, and smooth operation, effectively solving problems such as M-bag sticking, difficulty in opening the bag opening, and easy deviation of the layers. It greatly improves the automation level and continuous operation efficiency of the equipment and is suitable for high-volume, high-speed packaging production.

[0066] The left-right moving mechanism 41 includes: left and right slide rails 416 mounted on the turntable body 31; two slide blocks 415 slidably mounted on the left and right slide rails 416; a left clamping mechanism 44 and a right clamping mechanism 45 respectively mounted on the two slide blocks 415; and a left-right driving mechanism capable of driving the two slide blocks 415 to slide on the left and right guide rails. By sliding the two slide blocks 415 on the left and right guide rails, the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45 is achieved, allowing the two sides of the M-bag to move closer together, facilitating the opening of the bag.

[0067] The left and right slide rails 416 are horizontally fixed on the end face of the turntable body 31, providing a high-precision linear guide reference for the overall sliding pair; two sets of slide blocks 415 are symmetrically arranged, and are respectively matched and assembled on the left and right slide rails 416 with sliding pairs, which can perform low-friction linear reciprocating sliding along the slide rails.

[0068] The left clamping mechanism 44 and the right clamping mechanism 45 are fixedly mounted on the two sets of slide blocks 415 respectively. The power input is provided by the matching left and right drive mechanisms to drive the two slide blocks to slide smoothly in opposite directions along the left and right slide rails.

[0069] With the precise linear guidance of the slide rail and slide block, the left and right clamping mechanisms achieve precise relative displacement, which can automatically gather and center the bag edges on both sides of the M bag, so that the bag opening is naturally gathered and shaped, eliminating skew gaps. The overall guiding accuracy is high, the operation is smooth, and the transmission rigidity is good. It is not easy to jam, deviate, or shake, and can stably provide a regular bag opening posture for subsequent layered bag opening processes, improving the success rate of bag opening and the stability of continuous operation of the whole machine.

[0070] Each of the two slide blocks 415 is equipped with a left and right drive mechanism, which includes: a movable toothed plate 413, which is rotatably mounted on the turntable body 31 near its middle part; the first end of the movable toothed plate 413 has a toothed shape; a middle swing plate 414, the first end of which is hinged to the second end of the movable toothed plate 413; the second end of the middle swing plate 414 is hinged to the slide block 415; the two movable toothed plates 413 of the two slide blocks 415 mesh with each other; and a left and right power mechanism that can drive the movable toothed plates 413 to rotate. By rotating the movable toothed plates 413, the middle swing plate 414 is driven to move, and the middle swing plate 414 pulls the slide block 415 to slide on the left and right slide rails 416, realizing the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45, which can bring the two sides of the M bag closer together, making it easier to open the bag opening.

[0071] The movable gear 413 is hinged and rotatably mounted on the turntable body 31, with one end machined into a meshing tooth shape. The two ends of the intermediate swing plate 414 are respectively hinged and linked to the other end of the movable gear 413 and the corresponding slide 415. The movable gears 414 equipped with the two sets of slides mesh with each other as gears, forming a synchronous reverse transmission pair. The left and right power mechanisms provide rotational driving force for the entire transmission assembly, which can drive the movable gear to swing and rotate around the hinge point.

[0072] During operation, the left and right power mechanisms drive one side of the moving gear to rotate. Relying on the precise meshing transmission of the two moving gears, the other side of the moving gear swings synchronously in opposite directions with equal amplitude. Then, through the connecting rod hinge transmission of the middle swing plate, the rotation angle of the gear is converted into the linear sliding stroke of the slide block, driving the two sets of slide blocks to make a smooth movement of moving towards each other or separating away from each other along the left and right slide rails 416.

[0073] The left and right power mechanisms include a swing arm 411, which is hinged to the turntable 31 near its middle. The first end of the swing arm 411 is hinged to the first end of the movable pull rod 412, and the second end of the movable pull rod 412 is hinged to the movable gear 413. By pulling the movable pull rod 412 with the swing arm 411, the movable pull rod 412 pulls the movable gear 413 to rotate, thereby driving the slide block 415 to slide on the left and right slide rails 416, realizing the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45. This allows the two sides of the M bag to move closer together, making it easier to open the bag.

[0074] The left and right power mechanisms are equipped with a rocker arm 411 and a movable pull rod 412. The middle section of the rocker arm 411 is hinged to the turntable body 31 and can swing back and forth around the hinge point. One end of the rocker arm 411 is hinged to the end of the movable pull rod 412, and the other end of the movable pull rod 412 is hinged to the movable gear 413, forming a closed-loop transmission structure of rocker arm-pull rod-gear 413.

[0075] During operation, external power drives the swing arm 411 to swing around the fulcrum at an angle. The force and stroke are flexibly transmitted through the hinged movable pull rod 412, which in turn pulls the movable toothed piece 413 to make precise rotational swing around its own rotation fulcrum. Then, through the linkage of the intermediate swing plate, the rotational motion of the toothed piece is smoothly converted into the linear sliding motion of the slide block 415 along the left and right slide rails 416, which finally drives the left clamping mechanism 44 and the right clamping mechanism 45 to produce synchronous relative displacement.

[0076] like Figures 4-6 As shown, the outer clamping mechanism 46 includes: a clamping base 461, mounted on a slide 415; an outer clamping tube 462, slidably mounted on the clamping base 461; an outer fixed clamp 464, fixedly mounted on the first end of the outer clamping tube 462; an outer clamping rod 463, slidably mounted inside the outer clamping tube 462; and an outer movable clamp 465, mounted on the first end of the outer clamping rod 463, which can be adapted to the outer fixed clamp 464 to clamp the bag body. The outer clamping rod 463 moves within the outer clamping tube 462, pulling the outer movable clamp 465, which then adapts to the outer fixed clamp 464 to clamp the bag body. The outer clamping mechanism 46 clamps the outer layer of the M bag.

[0077] The outdoor unit clamping mechanism 46 mainly consists of a clamping base 461, an outdoor unit clamping tube 462, an outdoor unit clamping rod 463, an external fixed clamp 464, and an external movable clamp 465. The clamping base 461 is fixedly installed on the slide 415 and moves synchronously with the slide. The outdoor unit clamping tube 462 is slidably mounted on the clamping base 461 to achieve fine adjustment of the overall position. The external fixed clamp 464 is fixedly set at the front end of the outdoor unit clamping tube 462 as the stationary end of the clamp.

[0078] The outdoor unit clamping rod 463 can be axially slidably inserted inside the outdoor unit clamping tube 462, and an external movable clamp 465 is installed at its front end; through the telescopic movement of the outdoor unit clamping rod 463 inside the outdoor unit clamping tube 462, the external movable clamp 465 can be driven to move closer to or away from the external fixed clamp 464, forming a stable and reliable clamping opening.

[0079] like Figures 4-6As shown, the inner clamping mechanism 47 includes: an inner clamping tube 471, slidably mounted on the clamping base 461; an inner fixing clamp 472, fixedly mounted on the first end of the inner clamping tube 471; and an inner clamping rod 473, slidably mounted inside the inner clamping tube 471, the inner clamping rod 473 being adaptable to the inner fixing clamp 472 to clamp the bag body. The inner clamping rod 473 extends and retracts, adapting to the inner fixing clamp 472 to clamp the bag body. The inner clamping mechanism 47 clamps the inner layer of bag M.

[0080] The inner unit clamp tube 471 is slidably mounted on the machine clamp base 461, and can move synchronously with the whole machine station. It also has independent axial adjustment margin to ensure flexible and precise installation and alignment.

[0081] The internal fixed clamp 472 is fixed to the front end of the internal clamp tube 471 and serves as a static clamping reference component; the internal clamp rod 473 is coaxially slidably installed inside the internal clamp tube 471 and can make a smooth reciprocating linear motion along the tube.

[0082] The entire structure adopts a sleeve-type coaxial sliding structure, which has high guiding accuracy, no jamming during operation, and good clamping alignment consistency. The inner and outer clamping sections clamp without interference, which can accurately isolate the inner and outer layers of the M bag, completely avoiding problems such as interlayer adhesion, misalignment, and bag deviation. The clamping force is uniform, without damaging or deforming the bag, providing a reliable structural guarantee for subsequent bag layer separation and automatic bag opening. It is suitable for continuous cycle automated packaging operations, and has stable operation and strong durability.

[0083] like Figure 3 As shown, the opening and closing mechanism 42 includes: an opening and closing gear 426, which is rotatably mounted on the machine clamp base 461; an opening and closing rack 425, which is provided on both the outer machine clamp tube 462 and the inner machine clamp tube 471, and the opening and closing racks 425 on the outer machine clamp tube 462 and the inner machine clamp tube 471 respectively mesh with the two sides of the opening and closing gear 426; and an opening and closing power mechanism that can drive the opening and closing rack 425 to move.

[0084] The opening and closing gear 426 is rotatably mounted on the machine clamp base 461 and can rotate freely around its own axis; the corresponding sides of the outer machine clamp tube 462 and the inner machine clamp tube 471 are both fixed with opening and closing racks 425, and the two opening and closing racks are symmetrically meshed with the opening and closing gear 426 from the left and right sides respectively, forming a two-way synchronous transmission pair of gear and rack.

[0085] The opening and closing power mechanism provides power input, driving one side of the opening and closing rack to produce linear displacement. With the help of the reversing transmission of the opening and closing gear, it synchronously drives the other side of the opening and closing rack to make a reverse equidistant movement, thereby driving the outdoor unit clamp tube 462 and the indoor unit clamp tube 471 to achieve symmetrical reverse relative sliding.

[0086] This mechanism adopts a single-gear double-sided rack and pinion transmission structure, which has small transmission gap, high synchronization accuracy, and consistent motion response. It can ensure symmetrical opening and closing strokes of the inner and outer clamping tubes and synchronous and error-free action. The structure is compact, the transmission rigidity is strong, and the operation is smooth and shock-free. It can accurately control the smooth separation and closing clamping of the inner and outer layers of the M bag, effectively avoiding problems such as bag opening misalignment, layer pulling deformation, and asynchronous opening and closing, and greatly improving the stability of layered bag opening and the reliability of the automated operation of the whole machine.

[0087] With the above structure, the two layers of bag body of M bag can be clamped, and the two sides of M bag can be brought close to each other, making it easy to open the bag opening. It has high work efficiency and a high degree of automation.

[0088] Example 2

[0089] In this embodiment, the opening and closing power mechanism includes: a mounting base 421, mounted on the turntable body 31; a sliding guide rod 422, slidably mounted within the mounting base 421; an opening and closing lever 423, the middle portion of which is connected to the first end of the sliding guide rod 422; and an opening and closing block 424, disposed on the inner clamp tube 471, with the opening and closing lever 423 adaptable to the opening and closing block 424. The opening and closing lever 423 pulls the inner clamp tube 471, causing it to move. The rack on the inner clamp tube 471 drives the gear to rotate, which in turn drives the rack on the outer clamp tube 462, achieving relative movement between the inner and outer clamp tubes 471 and realizing the separation of the two layers of the M-bag. Figure 10 As shown.

[0090] Mounting base 421 is fixedly mounted on turntable body 31. Sliding guide rod 422 is assembled inside mounting base 421 in a way that allows it to slide back and forth. It can perform linear reciprocating guiding motion along the mounting base to ensure accurate transmission trajectory without deviation.

[0091] The lower section of the opening / closing lever 423 is rigidly connected to the head of the sliding guide rod 422, and the opening / closing block 424 is fixedly arranged on the side wall of the inner unit clamp tube 471, so that the opening / closing lever 423 and the opening / closing block 424 can form a precise engagement and linkage structure.

[0092] When the power-driven sliding guide rod 422 slides linearly, it drives the opening and closing lever 423 to swing synchronously, thereby pulling the indoor unit clamp tube 471 to make directional displacement; relying on the rack and gear of the indoor unit clamp tube 471 to form a meshing transmission pair, and then through the gear meshing transmission to the matching rack of the outdoor unit clamp tube 462, using the synchronous transmission principle of gear and rack meshing, the indoor unit clamp tube 471 and the outdoor unit clamp tube 462 are driven to form opposite relative displacement.

[0093] This structure features small transmission gaps, high synchronization, and stable and reliable operation. It can accurately complete the smooth opening and separation of the two layers of M-type packaging bags, effectively avoiding problems such as bag stretching deformation, misalignment, and wrinkles. It is suitable for continuous automated feeding and bag opening operations, greatly improving the stability of equipment operation and the packaging yield.

[0094] The left clamping mechanism 44 and the right clamping mechanism 45 are connected by a first return spring, which serves as a return spring. The indoor unit clamping rod 473 and the outdoor unit clamping rod 463 are equipped with second return springs, which also serve as return springs.

[0095] The clamping mechanism of the M-bag packaging machine includes: a turntable body 31, rotatably mounted on the machine frame; a left clamping mechanism 44 and a right clamping mechanism 45, capable of clamping both sides of the M-bag; a left-right moving mechanism 41, through which the left clamping mechanism 44 and the right clamping mechanism 45 are mounted on the turntable body 31, enabling the two sides of the M-bag to move closer together, facilitating the opening of the bag; an outer clamping mechanism 46 and an inner clamping mechanism 47, each provided on the left clamping mechanism 44 and the right clamping mechanism 45; the outer clamping mechanism 46 and the inner clamping mechanism 47 can respectively clamp the two layers of the M-bag, facilitating the opening of the bag; and an opening and closing mechanism 42, mounted on the machine frame, which can drive the outer clamping mechanism 46 and the inner clamping mechanism 47 to move relative to each other, thereby opening or closing the clamps and clamping or releasing the bag. It can hold two layers of bag bodies of M bag, and can bring the two sides of M bag close together, making it easy to open the bag opening. It has high work efficiency and a high degree of automation.

[0096] The left-right moving mechanism 41 includes: left and right slide rails 416 mounted on the turntable body 31; two slide blocks 415 slidably mounted on the left and right slide rails 416; a left clamping mechanism 44 and a right clamping mechanism 45 respectively mounted on the two slide blocks 415; and a left-right driving mechanism capable of driving the two slide blocks 415 to slide on the left and right guide rails. By sliding the two slide blocks 415 on the left and right guide rails, the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45 is achieved, allowing the two sides of the M-bag to move closer together, facilitating the opening of the bag.

[0097] Each of the two slide blocks 415 is equipped with a left and right drive mechanism, which includes: a movable toothed plate 413, which is rotatably mounted on the turntable body 31 near its middle part; the first end of the movable toothed plate 413 has a toothed shape; a middle swing plate 414, the first end of which is hinged to the second end of the movable toothed plate 413; the second end of the middle swing plate 414 is hinged to the slide block 415; the two movable toothed plates 413 of the two slide blocks 415 mesh with each other; and a left and right power mechanism that can drive the movable toothed plates 413 to rotate. By rotating the movable toothed plates 413, the middle swing plate 414 is driven to move, and the middle swing plate 414 pulls the slide block 415 to slide on the left and right slide rails 416, realizing the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45, which can bring the two sides of the M bag closer together, making it easier to open the bag opening.

[0098] The left and right power mechanisms include a swing arm 411, which is hinged to the turntable 31 near its middle. The first end of the swing arm 411 is hinged to the first end of the movable pull rod 412, and the second end of the movable pull rod 412 is hinged to the movable gear 413. By pulling the movable pull rod 412 with the swing arm 411, the movable pull rod 412 pulls the movable gear 413 to rotate, thereby driving the slide block 415 to slide on the left and right slide rails 416, realizing the relative movement of the left clamping mechanism 44 and the right clamping mechanism 45. This allows the two sides of the M bag to move closer together, making it easier to open the bag.

[0099] like Figures 4-6 As shown, the outer clamping mechanism 46 includes: a clamping base 461, mounted on a slide 415; an outer clamping tube 462, slidably mounted on the clamping base 461; an outer fixed clamp 464, fixedly mounted on the first end of the outer clamping tube 462; an outer clamping rod 463, slidably mounted inside the outer clamping tube 462; and an outer movable clamp 465, mounted on the first end of the outer clamping rod 463, which can be adapted to the outer fixed clamp 464 to clamp the bag body. The outer clamping rod 463 moves within the outer clamping tube 462, pulling the outer movable clamp 465, which then adapts to the outer fixed clamp 464 to clamp the bag body. The outer clamping mechanism 46 clamps the outer layer of the M bag.

[0100] like Figures 4-6 As shown, the inner clamping mechanism 47 includes: an inner clamping tube 471, slidably mounted on the clamping base 461; an inner fixing clamp 472, fixedly mounted on the first end of the inner clamping tube 471; and an inner clamping rod 473, slidably mounted inside the inner clamping tube 471, the inner clamping rod 473 being adaptable to the inner fixing clamp 472 to clamp the bag body. The inner clamping rod 473 extends and retracts, adapting to the inner fixing clamp 472 to clamp the bag body. The inner clamping mechanism 47 clamps the inner layer of bag M.

[0101] like Figure 3As shown, the opening and closing mechanism 42 includes: an opening and closing gear 426, which is rotatably mounted on the machine clamp base 461; an opening and closing rack 425, which is provided on both the outer machine clamp tube 462 and the inner machine clamp tube 471, and the opening and closing racks 425 on the outer machine clamp tube 462 and the inner machine clamp tube 471 respectively mesh with the two sides of the opening and closing gear 426; and an opening and closing power mechanism that can drive the opening and closing rack 425 to move.

[0102] This structure uses a gear and rack mechanism to complete the front and rear opening action, which is more stable and reliable; the left and right opening action uses a slide rail structure, which is equally stable and reliable. The front and rear opening action is driven by a slide groove, and the power for the action is provided by two cylinders in a fixed position. One cylinder pulls outward, and the other pushes to close. The structure is simple, the operation is stable and reliable, and multiple functional mechanisms are integrated into one structure to adapt to the special structure of M bags.

[0103] With the above structure, the two layers of bag body of M bag can be clamped, and the two sides of M bag can be brought close to each other, making it easy to open the bag opening. It has high work efficiency and a high degree of automation.

[0104] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0105] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0106] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clamping mechanism for an M-bag packaging machine, characterized in that, have: The turntable is rotatably mounted on the frame; The left and right clamping mechanisms can clamp both sides of the M-bag; A left-right moving mechanism is provided, wherein the left clamping mechanism and the right clamping mechanism are mounted on the turntable body via the left-right moving mechanism; The outer clamping mechanism and the inner clamping mechanism are provided on both the left clamping mechanism and the right clamping mechanism; the outer clamping mechanism and the inner clamping mechanism can respectively clamp the two layers of the M bag; An opening and closing mechanism is provided on the frame, which can drive the outer clamping mechanism and the inner clamping mechanism to move relative to each other.

2. The clamping mechanism of the M-bag packaging machine as described in claim 1, characterized in that, The left and right moving mechanism has: Left and right slide rails are installed on the turntable body; There are two slide blocks, which are slidably mounted on the left and right slide rails; the left clamping mechanism and the right clamping mechanism are respectively mounted on the two slide blocks; The left and right drive mechanism can drive the two slide blocks to slide on the left and right guide rails.

3. The clamping mechanism of the M-bag packaging machine as described in claim 2, characterized in that, Each of the two slide blocks is provided with a left-right drive mechanism, and the left-right drive mechanism has the following features: A movable toothed plate is rotatably mounted on the turntable near its central portion; the first end of the movable toothed plate is provided with a toothed shape. The intermediate swing plate has its first end hinged to the second end of the moving toothed plate; the second end of the intermediate swing plate is hinged to the slide block. The two moving gears of the two slides mesh with each other; The left and right power mechanisms can drive the moving gears to rotate.

4. The clamping mechanism of the M-bag packaging machine as described in claim 3, characterized in that, The left and right power mechanisms include a swing arm, which is hinged to the turntable near its middle. The first end of the swing arm is hinged to the first end of the movable pull rod, and the second end of the movable pull rod is hinged to the movable gear.

5. The clamping mechanism of the M-bag packaging machine as described in claim 4, characterized in that, The external clamping mechanism has: A clamping base is mounted on the slide; The outdoor unit clamp is slidably mounted on the clamp base; An external fixing clip is fixedly installed on the first end of the outdoor unit clamping tube; The outdoor unit clamp rod is slidably installed inside the outdoor unit clamp tube; An external movable clamp is installed on the first end of the external clamping rod, and the external movable clamp can be adapted to the external fixed clamp to clamp the bag body.

6. The clamping mechanism of the M-bag packaging machine as described in claim 5, characterized in that, The internal clamping mechanism has: The inner unit clamp is slidably mounted on the clamp base; An internal fixing clip is fixedly installed on the first end of the internal clamping tube; The inner clamp rod is slidably installed inside the inner clamp tube, and the inner clamp rod can be adapted to the inner fixed clamp to clamp the bag body.

7. The clamping mechanism of the M-bag packaging machine as described in claim 6, characterized in that, The opening and closing mechanism has: The opening and closing gear is rotatably mounted on the machine clamp base; Opening and closing racks are provided on both the outer and inner clamp tubes, and the opening and closing racks on the outer and inner clamp tubes respectively mesh with the two sides of the opening and closing gear. The opening and closing power mechanism is capable of driving the opening and closing rack to move.

8. The clamping mechanism of the M-bag packaging machine as described in claim 7, characterized in that, The opening and closing power mechanism has the following features: Mounting bracket, mounted on the turntable body; The sliding guide rod is slidably installed within the mounting base; The opening / closing lever is connected near its middle section to the first end of the sliding guide rod. An opening / closing lever is provided on the inner unit clamp tube, and the opening / closing lever can be adapted to the opening / closing lever.

9. The clamping mechanism of the M-bag packaging machine as described in claim 8, characterized in that, The left clamping mechanism and the right clamping mechanism are connected by a first return spring.

10. The clamping mechanism of the M-bag packaging machine as described in claim 9, characterized in that, The inner unit clamping rod and the outer unit clamping rod are equipped with a second return spring.

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