CN211766565U - Double-bag vacuum packaging machine - Google Patents

Abstract

The utility model discloses a double-bag vacuum packaging machine, including the double-bag centre gripping carousel of multistation and the vacuum heat-seal carousel of multistation, the outer circumference of double-bag centre gripping carousel sets up the double-bag centre gripping subassembly of multiunit, its characterized in that: each group of double-bag clamping assemblies comprises four machine clamps which are arranged side by side from left to right, the two machine clamps on the left side are used for clamping the bag on the left side, and the two machine clamps on the right side are used for clamping the bag on the right side; in the double-bag vacuum packaging process, the centers of the bags clamped by the left two machine clamps are kept unchanged when the left bag is tensioned and loosened, and the centers of the bags clamped by the right two machine clamps are also kept unchanged when the right bag is tensioned and loosened. The utility model discloses can keep the center of controlling the sack unchangeable of cliping in two bag packaging process, avoid going on getting the bag, going up the bag, opening the bag, propping the bag, reinforced, moving the central regulation of devices such as bag to different specification sacks, equipment structure is simple, possesses the bilateral taut function of two bags of vacuum heat-seal subassembly simultaneously, better guarantees vacuum heat-seal quality.

Description

Double-bag vacuum packaging machine

Technical Field

The utility model relates to a give pocket type vacuum packaging equipment, concretely relates to two bag vacuum packaging machine.

Background

At present, bag-feeding type vacuum packaging equipment is widely applied to industries such as food packaging, and the bag-feeding type vacuum packaging machine is formed by combining a bag-feeding type packaging part and a rotating disc type vacuum packaging part. For double-bag packaging, the bag-feeding type packaging part comprises a multi-station double-bag clamping rotary table, a plurality of groups of double-bag clamping assemblies are arranged on the outer circumference of the double-bag clamping rotary table, and the double-bag clamping assemblies are matched with the actions of devices for taking, loading, opening, feeding and the like arranged on the periphery of the rotary table to complete the operations of bag taking, loading, opening, bag opening, feeding and the like in the packaging process. In the double-bag clamping assembly arranged on the outer circumference of the double-bag clamping turntable in the prior art, because the feeding action is required in the packaging process, the left bag and the right bag are simultaneously loosened and tensioned, the double-bag clamping assembly is generally designed to be composed of a left machine clamp, a right machine clamp and a middle machine clamp, the position of the middle machine clamp is fixed, the left bag and the right bag are simultaneously loosened through the mutual approaching action of the left machine clamp and the right machine clamp, the bag opening is opened, when the feeding is finished, the left machine clamp and the right machine clamp are mutually far away, the left bag and the right bag are simultaneously tensioned, and the; therefore, the centers of the left and right bags clamped by the machine clamp can be changed aiming at the bags with different specifications, so that the centers of devices for taking, loading, opening, feeding, moving and the like are required to be correspondingly adjusted, and the equipment structure is complicated. In addition, to carousel formula vacuum packaging part, the outer circumference of its multistation vacuum heat sealing carousel sets up the vacuum heat sealing subassembly of multiunit, for avoiding appearing the fold of wrapping bag sack, prior art has adopted the unilateral tensioning structure that the single machine pressed from both sides or the double-deck clamp in the vacuum chamber of vacuum heat sealing subassembly, nevertheless all is to single sack, to two bag packing, obviously can not make two bags obtain bilateral tensioning simultaneously, consequently is difficult to guarantee vacuum heat sealing quality.

Disclosure of Invention

In view of the deficiencies in the prior art, the object of the present invention is to provide a double-bag vacuum packaging machine which can keep the center of the left and right bags clamped unchanged in the double-bag packaging process, has a simple structure, and simultaneously has the double-bag bilateral tightening function of the vacuum heat sealing assembly.

The utility model discloses a through following technical scheme implement:

double bag vacuum packaging machine, including the double bag centre gripping carousel of multistation and the vacuum heat-seal carousel of multistation, the outer circumference of double bag centre gripping carousel sets up the double bag centre gripping subassembly of multiunit, and the outer circumference of multistation vacuum heat-seal carousel sets up the vacuum heat-seal subassembly of multiunit, its characterized in that: each group of double-bag clamping assemblies comprises four machine clamps which are arranged side by side from left to right, the two machine clamps on the left side are used for clamping the bag on the left side, and the two machine clamps on the right side are used for clamping the bag on the right side; in the double-bag vacuum packaging process, the centers of the bags clamped by the left two machine clamps are kept unchanged when the left bag is tensioned and loosened, and the centers of the bags clamped by the right two machine clamps are also kept unchanged when the right bag is tensioned and loosened.

According to the double-bag vacuum packaging machine in the technical scheme, four machine clamps arranged side by side on the left and right of each group of double-bag clamping components replace three machine clamps in the prior art, the two machine clamps on the left side are used for clamping bags on the left side, and the two machine clamps on the right side are used for clamping bags on the right side; when double-bag vacuum packaging is carried out, the left two machine clamps can be designed to reversely swing to tighten and loosen the left bag, the swing distances are the same, the right two machine clamps are designed to reversely swing to tighten and loosen the right bag, the swing distances are the same, and therefore the centers of the bags clamped by the left and right machine clamps when the left and right bags are tightened and loosened can be easily kept unchanged; in this way, the center position of the bags is kept unchanged for the bags with different specifications, so that the centers of devices for taking, loading, opening, feeding, moving and the like do not need to be adjusted, and the structure of the whole equipment is simplified.

Preferably, the four machine clamps are respectively a first machine clamp on the left side, a second machine clamp in the middle, a third machine clamp and a fourth machine clamp on the right side, the first machine clamp, the second machine clamp, the third machine clamp and the fourth machine clamp are respectively connected to the double-bag clamping turntable in a swinging mode through respective pin shafts, the first machine clamp and the third machine clamp are pushed by the first pushing component to swing in the same direction, the second machine clamp is driven to swing leftwards when the first machine clamp swings rightwards, the fourth machine clamp is driven to swing leftwards when the third machine clamp swings rightwards, and the swinging angles of the four machine clamps are the same. Through the design, the left machine clamp and the right machine clamp can simultaneously reversely swing to strain and loosen the left bag and the right bag, the swing distance of each machine clamp is the same, and therefore the bag center clamped by the left machine clamp and the bag center clamped by the right machine clamp can be basically kept unchanged in the packaging process simply and structurally.

Preferably, a first pushing arm is arranged on one side, facing the second folder, of the tail end of the first folder, a second pushing arm is arranged on one side, facing the first folder, of the tail end of the second folder, a first roller wheel is mounted at the arm end of the first pushing arm, a first sliding groove is formed at the arm end of the second pushing arm, and the first roller wheel is arranged in the first sliding groove in a rolling mode; the tail end of the third mechanical clamp is provided with a third pushing arm towards one side of the fourth mechanical clamp, the tail end of the fourth mechanical clamp is provided with a fourth pushing arm towards one side of the third mechanical clamp, a second roller is installed at the arm end of the third pushing arm, a second sliding groove is formed in the arm end of the fourth pushing arm, the second roller is arranged in the second sliding groove in a rolling mode, and the second mechanical clamp and the third mechanical clamp are pulled by a tension spring. Through the design, when the first machine clamp and the third machine clamp swing, the second machine clamp and the fourth machine clamp can be driven to swing reversely, the swing angles are the same, and the structure is simple.

Preferably, the first pushing component comprises a transverse sliding plate, a first crank, a second crank and a first pushing roller, the transverse sliding plate is arranged at the bottom of the double-bag clamping rotary table in a left-right sliding mode, a third roller is installed at the rear end of a connecting block of the transverse sliding plate and is arranged in a third sliding groove formed in the swinging end of the first crank in a rolling mode, the first crank is fixedly connected with the second crank through a rotating shaft, the first pushing roller is installed at the swinging end of the second crank, a fourth roller and a fifth roller are installed at the left end and the right end of the transverse sliding plate respectively, a fourth sliding groove is formed in the tail end of the first clamp, the fourth roller is arranged in the fourth sliding groove in a rolling mode, a fifth sliding groove is formed in the tail end of the third clamp, and the fifth roller is arranged in the fifth sliding groove in a rolling mode. Through the design, when the first pushing roller rotates along with the double-bag clamping turntable, the end face cam arc ring enables the first pushing roller to generate upward action, so that the second crank and the first crank generate corresponding swing to transversely push the transverse sliding plate, and then the four machine clamps are driven to perform corresponding action to tighten and loosen the left and right bags.

Preferably, each group of vacuum heat-sealing assemblies comprises a vacuum chamber and four inner side clamping plates which are arranged side by side in the vacuum chamber from left to right, namely a first inner clamping plate at the left side, a second inner clamping plate in the middle, a third inner clamping plate and a fourth inner clamping plate at the right side, the first inner clamping plate and the fourth inner clamping plate are pushed by a second pushing part in the vacuum chamber to move relatively close to or away from each other in a left-right sliding mode, a first outer clamping plate, a second outer clamping plate, a third outer clamping plate and a fourth outer clamping plate are arranged corresponding to the first inner clamping plate, the second inner clamping plate, the third inner clamping plate and the fourth inner clamping plate, the first outer clamping plate can be transversely arranged on a left swing arm in a sliding mode, the second outer clamping plate is fixedly arranged on a left swing arm, the left end of the left swing arm is fixedly connected with a left swing rod, the fourth outer clamping plate can be transversely arranged on a right swing arm in a sliding mode, the third outer clamping plate is fixedly, the left swing rod and the right swing rod are pushed by the second pushing roller to rotate reversely.

The extending plates of the first outer clamping plate and the first inner clamping plate are hinged and connected through a left short pin at the position above the left swing rod, and the extending plates of the fourth outer clamping plate and the fourth inner clamping plate are hinged and connected through a right short pin at the position above the right swing rod.

After adopting above-mentioned technical scheme, it is first, the second inner splint and first, the second outer splint is used for the centre gripping of the sack on the left side, it is third, fourth inner splint and third, the fourth outer splint is used for the centre gripping of the sack on the right, after carrying on the back to controlling the sack, when the heat-seal scalds the head and carries out the heat-seal during operation, the second promotes the part and can promote first outer splint, first inner splint moves to the left side and strains the sack on the left side, promote the fourth outer splint simultaneously, the fourth inner splint moves to the right side and strains the sack on the right, and then realize the bilateral tensioning function of two bags of vacuum heat-seal subassembly, better guarantee vacuum heat-seal quality.

Preferably, the first inner clamping plate and the fourth inner clamping plate can be arranged on the clamping seat in a left-right sliding mode, the clamping seat is fixedly arranged on the inner side wall of the vacuum chamber, a sixth sliding groove and a seventh sliding groove which are transversely arranged are formed in the clamping seat, a sixth guide pin is arranged at the bottom of the first inner clamping plate and is arranged in the sixth sliding groove in a sliding mode, a seventh guide pin is arranged at the bottom of the fourth inner clamping plate and is arranged in the seventh sliding groove in a sliding mode, an eighth sliding groove which is transversely arranged is formed in the left swinging arm, a ninth sliding groove which is transversely arranged is formed in the right swinging arm, an eighth guide pin is arranged at the bottom of the first outer clamping plate and is arranged in the eighth sliding groove, a ninth guide pin is arranged at the bottom of the fourth outer clamping plate and is arranged in the ninth sliding groove. Through the design, the synchronous lateral sliding action of the left bag and the right bag when bilateral tensioning is carried out can be simply realized through the structure of the first inner clamping plate, the first outer clamping plate, the fourth inner clamping plate and the fourth outer clamping plate.

Preferably, the second pushing component comprises a left pushing plate, a right pushing plate and an air cylinder, the left end of the left pushing plate is hinged with the first inner clamping plate, the right end of the right pushing plate is hinged with the fourth inner clamping plate, the other end of the left pushing plate and the other end of the right pushing plate are hinged with a push rod joint of the air cylinder, and the air cylinder is fixedly installed on the back face of the vacuum chamber. Through the design, when the cylinder promotes the heat-seal and scalds the head and carry out the heat-seal during operation to controlling the sack, also promote simultaneously that first interior splint slide left, fourth interior splint slide right to make first outer splint slide left, fourth outer splint slide right through left short round pin, right short round pin in step, carry out bilateral tensioning to controlling the sack.

Preferably, the transmission mechanism of the double-bag vacuum packaging machine is provided with a main transmission shaft and a secondary transmission shaft which are arranged in parallel, the shaft end of the main transmission shaft is in transmission connection with a speed reduction motor, the main transmission shaft drives the secondary transmission shaft through a gear, a three-station feeding cam, a four-station feeding cam, a double-bag clamping turntable cam, a bag opening cam, a bag loosening cam and a bag receiving cam are sequentially arranged on the main transmission shaft from left to right, and a bag opening cam, a machine clamp tensioning and loosening cam, a bag taking cam, a bag opening lifting cam, a bag opening return cam, a bag feeding cam, a bag moving synchronous cam and a bag moving cam are sequentially arranged on the secondary transmission shaft from left. Through the design, the two transmission shafts basically cover the cam transmission installation of all devices of the double-bag vacuum packaging machine, so that the transmission structure is compact, the equipment structure is simple, and the assembly is convenient.

Drawings

The utility model discloses there is following figure:

figure 1 is a three-dimensional structure diagram of the utility model,

figure 2 is a rear view in elevation of figure 1,

figure 3 is a block diagram of a dual bag clamp assembly,

figure 4 is a bottom view in elevation of figure 3,

figure 5 is an internal block diagram of the stand alone clamp of figure 3,

figure 6 is a block diagram of a vacuum heat seal assembly,

figure 7 is a view of figure 6 with the heat seal iron removed,

figure 8 is a bottom view in elevation of figure 7,

figure 9 is a view of the structure of figure 7 with the outer clamping plate and the inner clamping plate clamped together,

fig. 10 is a structural view of the transmission mechanism.

Detailed Description

As shown in fig. 1-4, the utility model discloses a double-bag vacuum packaging machine, including the double-bag of multistation centre gripping carousel 1 and the vacuum heat-seal carousel 2 of multistation, the outer circumference of double-bag centre gripping carousel 1 sets up the double-bag centre gripping subassembly 3 of multiunit, the outer circumference of multistation vacuum heat-seal carousel 2 sets up the vacuum heat-seal subassembly 4 of multiunit, every group double-bag centre gripping subassembly 3 includes four machine clamps that set up side by side about, be the first machine clamp 5 on the left side, the second machine clamp 6 in the middle of, the third machine clamp 7 and the fourth machine clamp 8 on the right side respectively, the first, two machine clamps on the left side are used for the centre gripping of bag a on the left side, the third, two machine clamps on the right side are used for the; the first, second, third and fourth machine clamps can be swingably connected to the double-bag clamping turntable 1 through respective pin shafts 23, the first machine clamp 5 and the third machine clamp 7 are pushed by the first pushing part to swing in the same direction, the second machine clamp 6 is driven to swing leftwards when the first machine clamp 5 swings rightwards, the fourth machine clamp 8 is driven to swing leftwards when the third machine clamp 7 swings rightwards, and the swing angles of the four machine clamps are the same, so that the bag centers clamped by the left two machine clamps can be basically kept unchanged when the left bag A is tensioned and loosened, and the bag centers clamped by the right two machine clamps can be basically kept unchanged when the right bag B is tensioned and loosened during double-bag vacuum packaging. The concrete structure is as follows: a first pushing arm is arranged on one side, facing the second folder, of the tail end of the first folder 5, a second pushing arm is arranged on one side, facing the first folder, of the tail end of the second folder 6, a first roller 25 is installed at the arm end of the first pushing arm, a first sliding groove 24 is formed at the arm end of the second pushing arm, and the first roller 25 is arranged in the first sliding groove 24 in a rolling mode; a third pushing arm is arranged on one side, facing the fourth folder, of the tail end of the third folder 7, a fourth pushing arm is arranged on one side, facing the third folder, of the tail end of the fourth folder 8, a second roller 27 is installed at the arm end of the third pushing arm, a second chute 26 is formed in the arm end of the fourth pushing arm, the second roller 27 is arranged in the second chute 26 in a rolling mode, and the second folder 6 and the third folder 7 are pulled by a tension spring 10; the first pushing component comprises a transverse sliding plate 9, a first crank 14, a second crank 16 and a first pushing roller 17, the first pushing roller 17 rotates with the double-bag clamping rotary table 1 during the packaging work, the first pushing roller is pushed by an end face cam arc ring to move up and down, the transverse sliding plate 9 is arranged at the bottom of the double-bag clamping rotary table 1 in a left-right sliding mode, the transverse sliding plate 9 is guided by a guide post 13 in the left-right sliding mode, supports 20 at two ends of the guide post 13 are fixedly arranged at the bottom of the double-bag clamping rotary table 1, a third roller 18 is arranged at the rear end of a connecting block of the transverse sliding plate 9, the third roller 18 is arranged in a third sliding groove 19 arranged at the swinging end of the first crank 14 in a rolling mode, the first crank 14 is fixedly connected with the second crank 16 through a rotating shaft 15, the first pushing roller 17 is arranged at the swinging end of the second crank 16, a fourth roller 11 and a fifth roller 22 are respectively arranged at the left, the tail end of the first machine clamp 5 is provided with a fourth sliding groove 12, a fourth roller 11 rolls and is arranged in the fourth sliding groove 12, the tail end of the third machine clamp 7 is provided with a fifth sliding groove 21, and a fifth roller 22 rolls and is arranged in the fifth sliding groove 21. In addition, the clamp opening action of the four machine clamps can be seen in fig. 5, when the clamp opening pushing rollers 28 of the four machine clamps are pushed outwards together by the push plate, the mounting shafts 29 of the rollers push the posts 30 to move outwards, the posts 30 push the movable claw blocks 32 to turn outwards through the steel sheets 31, then the machine clamps are opened, after the push plate returns, the posts 30 also return under the action of the springs 33, the movable claw blocks 32 turn inwards, and then the machine clamps are folded again.

As shown in fig. 6-9, each set of vacuum heat sealing assembly includes a vacuum chamber 34 and four inner clamping plates arranged side by side left and right in the vacuum chamber 34, which are respectively a first inner clamping plate 37 on the left, a second inner clamping plate 38 in the middle, a third inner clamping plate 39 and a fourth inner clamping plate 40 on the right, the first inner clamping plate 37 and the fourth inner clamping plate 40 are pushed by a second pushing member to move relatively close to or away from each other and slide left and right in the vacuum chamber 34, a first outer clamping plate 41, a second outer clamping plate 42, a third outer clamping plate 43 and a fourth outer clamping plate 44 are arranged corresponding to the first, second, third and fourth inner clamping plates, the first outer clamping plate 41 can be transversely slidably arranged on a left swing arm 45, the second outer clamping plate 42 is fixedly arranged on the left swing arm 45, the left end of the left swing arm 45 is fixedly connected with a left swing rod 46, the fourth outer clamping plate 44 can be transversely slidably arranged on a right swing arm 53, the third outer clamping plate 43 is, the right end of the right swing arm 53 is fixedly connected with a right swing rod 52, the left swing rod 46 and the right swing rod 52 are rotatably arranged at the left side and the right side in the vacuum chamber 34, and the left swing rod 46 and the right swing rod 52 are pushed by a second pushing roller 35 to rotate reversely; the extending plates of the first outer clamping plate 41 and the first inner clamping plate 37 are hinged through a left short pin 47 at a position above the left swing link 46, and the extending plates of the fourth outer clamping plate 44 and the fourth inner clamping plate 40 are hinged through a right short pin 51 at a position above the right swing link 52. The concrete structure is as follows: the first inner clamping plate 37 and the fourth inner clamping plate 40 can be arranged on a clamping seat 58 in a left-right sliding manner, the clamping seat 58 is fixedly arranged on the inner side wall of the vacuum chamber 34, a sixth sliding groove 57 and a seventh sliding groove 59 which are transversely arranged are arranged on the clamping seat 58, a sixth guide pin 56 is arranged at the bottom of the first inner clamping plate 37, the sixth guide pin 56 is arranged in the sixth sliding groove 57 in a sliding manner, a seventh guide pin 62 is arranged at the bottom of the fourth inner clamping plate 40, the seventh guide pin 62 is arranged in the seventh sliding groove 59 in a sliding manner, an eighth sliding groove 55 which is transversely arranged is arranged on the left swing arm 45, a ninth sliding groove 60 which is transversely arranged is arranged on the right swing arm 53, an eighth guide pin 54 is arranged at the bottom of the first outer clamping plate 41, the eighth guide pin 54 is arranged in the eighth sliding groove 55, a ninth guide pin 61 is arranged at the bottom of the fourth outer; the second pushing component comprises a left pushing plate, a right pushing plate and an air cylinder 63, the left end of the left pushing plate 48 is hinged to be connected with the first inner clamping plate 37, the right end of the right pushing plate 50 is hinged to be connected with the fourth inner clamping plate 40, the other end of the left pushing plate and the other end of the right pushing plate are hinged to be connected with a push rod connector 49 of the air cylinder 63, the air cylinder 63 is fixedly installed on the back face of the vacuum chamber 34, and the air cylinder 63 is used for pushing the heat-sealing.

As shown in fig. 10, the transmission mechanism of the double-bag vacuum packaging machine has two main transmission shafts 80 and two secondary transmission shafts 72 which are arranged in parallel, the shaft end of the main transmission shaft 80 is connected with a speed reducing motor 81, the main transmission shaft 80 transmits the secondary transmission shaft 72 through a gear 79, a three-station feeding cam 73, a four-station feeding cam 74, a double-bag clamping turntable cam 75, an opening cam 76, a loosening cam 77 and a bag receiving cam 78 are sequentially arranged on the main transmission shaft 80 from left to right, and a bag opening cam 64, a clamp tensioning and loosening cam 65, a bag taking cam 66, a bag opening lifting cam 67, a bag opening return cam 68, a bag feeding cam 69, a bag moving synchronous cam 70 and a bag moving cam 71 are sequentially arranged on the secondary transmission shaft 72 from left to right. When the packaging machine works, the speed reducing motor drives the main transmission shaft and the auxiliary transmission shaft to continuously operate, and the sequential actions of the cams are as follows: the double-bag clamping turntable cam controls the double-bag clamping turntable to generate indexing rotation, the bag taking cam controls the bag taking mechanism to suck left and right empty bags from a bag bin, the bag feeding cam controls the bag feeding mechanism to convey the empty bags to the machine clamp assembly, the clamp opening cam controls the clamp opening mechanism to clamp the empty bags, the bag opening cam controls the bag opening mechanism to open the mouths of the empty bags, the machine clamp is tensioned and loosened to control the end face cam arc ring to rotate back and forth, the bags are tensioned and loosened, the bag opening lifting cam controls the bag opening mechanism to expand the mouths of the bags, the bag opening return cam controls the bag opening mechanism to return, the three-station feeding cam controls the feeding mechanism to feed, the four-station feeding cam controls the other feeding mechanism to feed the bags, the bags clamped by the machine clamp assembly are conveyed to the vacuum heat sealing assembly, the bag moving synchronous cam controls the bag moving device to track the vacuum heat sealing turntable to rotate, the bag loosening cam controls the bag loosening mechanism to move to loosen the bag clamped by the machine clamping assembly before moving the bag, and the bag receiving cam controls the bag receiving mechanism to move to enable the vacuum heat sealing assembly to clamp the bag.

Claims (9)

1. Double bag vacuum packaging machine, including the double bag centre gripping carousel of multistation and the vacuum heat-seal carousel of multistation, the outer circumference of double bag centre gripping carousel sets up the double bag centre gripping subassembly of multiunit, and the outer circumference of multistation vacuum heat-seal carousel sets up the vacuum heat-seal subassembly of multiunit, its characterized in that: each group of double-bag clamping assemblies comprises four machine clamps which are arranged side by side from left to right, the two machine clamps on the left side are used for clamping the bag on the left side, and the two machine clamps on the right side are used for clamping the bag on the right side; in the double-bag vacuum packaging process, the centers of the bags clamped by the left two machine clamps are kept unchanged when the left bag is tensioned and loosened, and the centers of the bags clamped by the right two machine clamps are also kept unchanged when the right bag is tensioned and loosened.

2. The dual bag vacuum packaging machine of claim 1 wherein: the four machine clamps are respectively a first machine clamp on the left side, a second machine clamp in the middle, a third machine clamp and a fourth machine clamp on the right side, the first machine clamp, the second machine clamp, the third machine clamp and the fourth machine clamp can be connected to the double-bag clamping turntable in a swinging mode through respective pin shafts, the first machine clamp and the third machine clamp are pushed by the first pushing component to swing in the same direction, the second machine clamp is driven to swing leftwards when the first machine clamp swings rightwards, the fourth machine clamp is driven to swing leftwards when the third machine clamp swings rightwards, and the swinging angles of the four machine clamps are the same.

3. The dual bag vacuum packaging machine of claim 2 wherein: a first pushing arm is arranged on one side, facing the second folder, of the tail end of the first folder, a second pushing arm is arranged on one side, facing the first folder, of the tail end of the second folder, a first roller wheel is mounted at the arm end of the first pushing arm, a first sliding groove is formed in the arm end of the second pushing arm, and the first roller wheel is arranged in the first sliding groove in a rolling mode; the tail end of the third mechanical clamp is provided with a third pushing arm towards one side of the fourth mechanical clamp, the tail end of the fourth mechanical clamp is provided with a fourth pushing arm towards one side of the third mechanical clamp, a second roller is installed at the arm end of the third pushing arm, a second sliding groove is formed in the arm end of the fourth pushing arm, the second roller is arranged in the second sliding groove in a rolling mode, and the second mechanical clamp and the third mechanical clamp are pulled by a tension spring.

4. The dual bag vacuum packaging machine of claim 2 wherein: first promotion part includes transverse sliding plate, first crank, second crank and first promotion gyro wheel, and transverse sliding plate is in the setting of sliding about the bottom of two bags centre gripping carousel is made, and transverse sliding plate's connecting block rear end installation third gyro wheel, third gyro wheel roll are located in the third spout that first articulate swing end set up, and first crank is fixed continuous with the second crank through the pivot, first promotion gyro wheel is installed at second articulate swing end, and fourth gyro wheel and fifth gyro wheel are installed respectively to transverse sliding plate's left and right sides end, and the tail end of first machine clamp sets up the fourth spout, and the fourth gyro wheel rolls and locates in the fourth spout, and the tail end of third machine clamp sets up the fifth spout, and the fifth gyro wheel rolls and locates in the fifth spout.

5. The dual bag vacuum packaging machine of claim 1 wherein: each group of vacuum heat-sealing components comprises a vacuum chamber and four inner side clamping plates which are arranged in the vacuum chamber side by side from left to right, namely a first inner clamping plate at the left side, a second inner clamping plate in the middle, a third inner clamping plate and a fourth inner clamping plate at the right side, wherein the first inner clamping plate and the fourth inner clamping plate are pushed by a second pushing part in the vacuum chamber to move relatively close to or away from each other in a left-right sliding manner, a first outer clamping plate, a second outer clamping plate, a third outer clamping plate and a fourth outer clamping plate are arranged corresponding to the first inner clamping plate, the second outer clamping plate, the third outer clamping plate and the fourth inner clamping plate, the first outer clamping plate can be transversely arranged on a left swing arm in a sliding manner, the second outer clamping plate is fixedly arranged on a left swing arm, the left end of the left swing arm is fixedly connected with a left swing rod, the fourth outer clamping plate can be transversely arranged on a right swing arm in a sliding manner, the third outer clamping plate, the left swing rod and the right swing rod are pushed by the second pushing roller to rotate reversely.

6. The dual bag vacuum packaging machine of claim 5 wherein: the extending plates of the first outer clamping plate and the first inner clamping plate are hinged and connected through a left short pin at the position above the left swing rod, and the extending plates of the fourth outer clamping plate and the fourth inner clamping plate are hinged and connected through a right short pin at the position above the right swing rod.

7. The dual bag vacuum packaging machine of claim 5 wherein: first interior splint, fourth interior splint can control to slide and locate on the holder, the holder is in real empty room's inside wall fixed mounting, be equipped with horizontal laid sixth spout and seventh spout on the holder, the bottom installation sixth guide pin of first interior splint, the sixth guide pin slides and locates in the sixth spout, the seventh guide pin is installed to the bottom of fourth interior splint, the seventh guide pin slides and locates in the seventh spout, be equipped with the horizontal eighth spout of laying in the swing arm of left side, be equipped with the horizontal ninth spout of laying in the swing arm of right side, the bottom installation eighth guide pin of first exterior splint, the eighth guide pin slides and locates in the eighth spout, the ninth guide pin is installed to the bottom of fourth exterior splint, the ninth guide pin slides and locates in the ninth spout.

8. The double-bag vacuum packaging machine according to claim 5 or 7, wherein: the second promotes the part including controlling push pedal and cylinder, and the left end of left push pedal articulates connects first inner plating, and the right-hand member of right push pedal articulates connects fourth inner plating, controls the other end of push pedal with the push rod joint of cylinder articulates and connects, and the cylinder is at real empty back fixed mounting in room.

9. The dual bag vacuum packaging machine of claim 1 wherein: the transmission mechanism of the double-bag vacuum packaging machine is provided with a main transmission shaft and a secondary transmission shaft which are arranged in parallel, the shaft end of the main transmission shaft is in transmission connection with a speed reduction motor, the main transmission shaft drives the secondary transmission shaft through a gear, a three-station feeding cam, a four-station feeding cam, a double-bag clamping turntable cam, a clamp opening cam, a clamp loosening cam and a bag receiving cam are sequentially arranged on the main transmission shaft from left to right, and a bag opening cam, a machine clamp tensioning and loosening cam, a bag taking cam, a bag opening lifting cam, a bag opening return cam, a bag feeding cam, a bag moving synchronous cam and a bag moving cam are sequentially arranged on the secondary transmission shaft from.

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