CN214777097U - A automatic flexible conveyor belt for film seals cuts packaging production line - Google Patents

Abstract

The utility model discloses an automatic flexible conveyor belt for film seals cuts packaging production line, including belt frame, driving roll, driven cylinder, removal telescopic component, adjusting cylinder, belt, the belt frame includes riser, cross board is connected with the riser of both sides, the bilateral symmetry is equipped with the cylinder on the cross board, two cylinder outsides are equipped with the direction subassembly, cylinder, direction subassembly are connected with removal telescopic component, one side of belt frame is equipped with driving roll, driving roll rotates and drives the belt and remove around each cylinder, adjusting cylinder opens into the belt through with riser sliding connection, the flexible drive of qigong removes telescopic component and removes to it is flexible along the direction of delivery is automatic to drive the belt. The utility model discloses an automatic flexible conveyor belt for film seals cuts packaging production line, simple to operate, automatic flexible belt is applicable to the flexible belt transport of short distance, and reduction in production cost improves production efficiency.

Description

A automatic flexible conveyor belt for film seals cuts packaging production line

Technical Field

The utility model belongs to the technical field of the packaging production line, in particular to an automatic flexible conveyor belt that is used for film to seal to cut packaging production line.

Background

In order to protect the outer package of the product from being scratched and damp and beautify the appearance of the product, a layer of plastic film is required to be packaged on the outer surface of the product package and four corners are required to be cut off, so that a widely-applied film sealing and cutting packaging machine is provided. The sealing and cutting packaging machine is used for a flow production line for batch production and packaging, is widely applied to manufacturing industries of household appliances, electronics, food, dairy products, oils, cosmetics, beverages, electric appliances and the like, and has the advantages of high working efficiency, automatic film feeding, automatic film sleeving, sealing and cutting, and automatic winding and shrinking.

The film sealing and cutting packaging machine is used for sleeving a film on a product, conveying the product to the sealing and cutting mechanism through a conveying belt, and conveying the product to the next procedure after sealing and cutting. And there is the clearance that is used for sealing between conveyer belt and the sealing mechanism of cutting, and when the product of packing less, the product can not carry and will drop to seal and cut the clearance to next process, damages the product, increases manufacturing cost, influences production efficiency. If manual conveying is carried out, the labor cost is increased, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome above not enough, the utility model aims at providing an automatic flexible conveyor belt for film seals cuts packaging production line, its simple structure seals and cuts the back, and the automatic belt that extends remedies to seal and cuts the clearance, prevents that the product from dropping, reduction in production cost improves production efficiency to be applicable to the flexible belt of short distance and carry.

The technical scheme is as follows: an automatic telescopic conveying belt for a film sealing and cutting packaging production line comprises a belt frame, a driving roller, a driven roller, a movable telescopic assembly, an adjusting roller and a belt, wherein the driven roller comprises a first driven roller, a second driven roller, a third driven roller and a fourth driven roller, the first driven roller and the fourth driven roller are arranged at two ends of the belt, the second driven roller and the third driven roller are arranged between the first driven roller and the fourth driven roller, the second driven roller is arranged above the third driven roller, the second driven roller can increase the rotating friction force of the belt and avoid the belt from slipping, the belt frame comprises vertical plates and transverse connecting plates, the vertical plates are symmetrically arranged at two sides of the belt frame, one side of each vertical plate, which is close to the telescopic movable assembly, is provided with a first fixed plate and a second fixed plate which are movably connected, the first fixed plate is in a right-angle triangle shape, and the bevel edge of each vertical plate is abutted to the bevel edge of one side of the vertical plate, the belt conveyor is characterized in that the belt conveyor is connected with vertical plates through a second fixed plate, a fourth driven roller which is rotationally connected with the first fixed plate is arranged on the first fixed plate, a belt is convenient to mount and replace, the transverse connecting plate is connected with the vertical plates on two sides through screws, cylinder seats are symmetrically arranged on two sides of the transverse connecting plate, cylinders are fixed on the cylinder seats, guide assemblies fixed on the transverse connecting plate are arranged on the outer sides of the two cylinders, the movement of the guide cylinders enables the movable telescopic assemblies to stably and horizontally reciprocate, the output end of the cylinders is connected with the movable telescopic assemblies, each movable telescopic assembly comprises a movable transverse plate, a cylinder push plate, a guide push plate, a roller mounting plate, a first telescopic roller and a second telescopic roller, the cylinder push plate and the guide push plate are fixed above one side of the movable transverse plate close to the transverse connecting plate, the cylinder push plate is connected with the output end of a piston rod of the cylinders, and the guide push plate is connected with the guide assemblies, the movable cross plate is characterized in that roller mounting plates are connected to two sides of the movable cross plate, a first telescopic roller and a second telescopic roller are arranged between the roller mounting plates and connected with the roller mounting plates in a rotating mode, the second telescopic roller is arranged above the movable cross plate, the first telescopic roller is arranged on the oblique upper side of the second telescopic roller, a driving roller is arranged on the opposite side of the belt frame and the first telescopic roller, two ends of the driving roller penetrate through a belt seat bearing fixed on a vertical plate and are matched with the belt seat bearing, the driving roller is connected with the vertical plate in a rotating mode through the belt seat bearing, the tail end of one side of the driving roller is connected with a driving motor driving the driving roller to rotate, the driving roller drives a belt to move around the rollers in a rotating mode, products on the belt are conveyed to the required position, the driving roller, the first driven roller, the first telescopic roller, the fourth driven roller and the third driven roller are sequentially bypassed on the inner side of the belt, an adjusting roller is sequentially bypassed on the outer side of the belt, The driven roller II and the telescopic roller II are arranged, an adjusting roller is arranged on one side, away from the movable telescopic assembly, of the driving roller, and the adjusting roller stretches a belt through sliding connection with the vertical plate. And starting the cylinder to push the movable telescopic assembly, so that the first telescopic roller and the second telescopic roller move forwards together to drive the belt to extend forwards, an overlarge gap is made up, and a product with a small appearance is automatically conveyed to the next process.

Further, above-mentioned a conveying belt who is used for film to seal to cut packing production line's automation to stretch out and draw back, driven cylinder one, driven cylinder two, driven cylinder three, driven cylinder all structure is the same to rotate with the riser and be connected, including pivot, cylinder, bearing, the pivot cover is located in the cylinder and is stretched out outside the cylinder, the cylinder both ends are equipped with the bearing, the bearing outside is equipped with the axle card, the pivot passes through the bearing and is connected with the cylinder rotation for the belt is in smooth rotation under the drive of initiative cylinder.

Furthermore, according to the automatic telescopic conveying belt for the film sealing and cutting packaging production line, the two ends of the rotating shaft are inserted into the mounting holes of the vertical plates and matched with the mounting holes, so that the driven roller is more convenient and simpler to mount, and the mounting speed is increased.

Further, according to the automatic telescopic conveying belt for the film sealing, cutting and packaging production line, the roller mounting plate is arranged on the inner side of the vertical plate in parallel and is in clearance fit with the vertical plate.

Furthermore, according to the automatic telescopic conveying belt for the film sealing and cutting packaging production line, the upper end of the vertical plate is provided with the bending edge, the bending edge is parallel to the upper surface of the belt and is inserted into the belt, gaps between two side edges of the belt and the vertical plate are covered, and dust is prevented from falling into the belt.

Further, foretell a conveyor belt who is used for film to seal to cut packing production line's automation to stretch out and draw back, riser one side is equipped with spout, dog, the spout comprises rectangular hole and round hole, rectangular hole and round hole intercommunication, the round hole internal diameter is greater than adjusting roller's external diameter, makes things convenient for adjusting roller's installation and dismantlement, spout rectangular hole one side is located to the dog.

Furthermore, foretell a conveyor belt who is used for film to seal and cuts automatic flexible of packaging production line, adjusting cylinder inserts in the spout and with spout sliding connection, adjusting cylinder passes through the bolt and the dog that the axle head set up and is connected to adjust the distance of axle head and dog through the bolt, thereby adjust the tension of belt through adjusting distance.

Furthermore, the two guide assemblies are symmetrically arranged on the outer sides of the two cylinders, so that the two sides of the cylinders are stressed stably.

Furthermore, the above automatic telescopic conveyor belt for the film sealing and cutting packaging production line comprises a guide rod and a linear sliding block, wherein the linear sliding block is fixed above the transverse connecting plate, the guide rod is inserted into the linear sliding block and is connected with the linear sliding block in a sliding manner, one end of the guide rod is connected with the guide push plate, and the guide rod is matched with the linear sliding block to guide the movement of the cylinder, so that the first telescopic roller and the second telescopic roller can move horizontally and repeatedly along the conveying direction more quickly and stably.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has:

1. the utility model discloses an automatic flexible conveyor belt for film seals cuts packaging production line, through the swing joint of fixed plate one and riser, thereby make driven cylinder four and riser swing joint, when the belt needs to be installed or change, demolish driven cylinder four earlier, make the installation and the change of belt faster;

2. the utility model discloses an automatic flexible conveyor belt for film seals cuts packaging production line, the installation of each cylinder is simple convenient, saves installation time, improves the installation effectiveness;

3. a automatic flexible conveyor belt for film seals cuts packaging production line, through the automatic flexible subassembly of promotion removal of cylinder and direction subassembly, it is flexible to drive the belt, carries the automatic process to one down of less product of appearance, reduction in production cost improves production efficiency.

Drawings

Fig. 1 is a schematic perspective view of an automatic retractable conveyor belt for a film sealing, cutting and packaging production line (belt not shown) according to the present invention;

FIG. 2 is a schematic view of the external three-dimensional structure of an automatic retractable conveyor belt for a film sealing and cutting packaging production line according to the present invention;

fig. 3 is an enlarged schematic view of a part a of an automatic retractable conveying belt for a film sealing, cutting and packaging production line according to the present invention;

FIG. 4 is a schematic view of a half-section structure of an automatic retractable conveying belt for a film sealing and cutting packaging production line according to the present invention;

FIG. 5 is a partial structural view of a driven roller of an automatic retractable conveying belt for a film sealing and cutting packaging line according to the present invention;

in the figure: 11 vertical plates, 111 bending edges, 112 mounting holes, 113 sliding grooves, 114 long holes, 115 round holes, 116 stoppers, 12 transverse connecting plates, 13 driving rollers, 14 driven rollers, 141 driven rollers I, 142 driven rollers II, 143 driven rollers III, 144 driven rollers IV, 145 rotating shafts, 146 rollers, 147 bearings, 148 shaft clamps, 15 movable telescopic components, 151 movable transverse plates, 152 air cylinder push plates, 153 guide push plates, 154 roller mounting plates, 155 telescopic rollers I, 156 telescopic rollers II, 16 adjusting rollers, 17 belts, 18 fixed plates I, 19 fixed plates II, 20 air cylinder seats, 21 air cylinders, 22 guide components, 221 guide rods, 222 linear sliding blocks and 23 belt seat bearings.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

As shown in fig. 1-5, an automatic telescopic conveying belt for a film sealing and cutting packaging production line, comprises a belt frame, a driving roller 13, a driven roller 14, a movable telescopic assembly 15, an adjusting roller 16 and a belt 17, wherein the driven roller 14 comprises a first driven roller 141, a second driven roller 142, a third driven roller 143 and a fourth driven roller 144, the first driven roller 141 and the fourth driven roller 144 are arranged at two ends of the belt 147, a second driven roller 142 and a third driven roller 143 are arranged between the first driven roller 141 and the fourth driven roller 144, the second driven roller 142 is arranged above the third driven roller 143, the second driven roller 142 can increase the rotating friction force of the belt 17 to prevent the belt 17 from slipping, the belt frame comprises a vertical plate 11 and a transverse connecting plate 12, the vertical plate 11 is symmetrically arranged at two sides of the belt frame, one side of the vertical plate 11 close to the movable telescopic assembly 15 is provided with a first fixed plate 18, a second fixed plate connected with a movable connecting plate, and a movable connecting plate connected with a fixed plate connected with a movable plate connected, A second fixing plate 19, wherein the first fixing plate 18 is in a right triangle shape, the bevel edge is abutted against the bevel edge on one side of the vertical plate 11 and is connected with the vertical plate 11 through the second fixing plate 19, a fourth driven roller 144 rotationally connected with the first fixing plate 18 is arranged on the first fixing plate 18, so that a belt 17 can be conveniently installed and replaced, the transverse connecting plate 12 is connected with the vertical plates 11 on two sides through screws, cylinder bases 20 are symmetrically arranged on two sides of the transverse connecting plate 12, cylinders 21 are fixed on the cylinder bases 20, guide assemblies 22 fixed on the transverse connecting plate 12 are arranged on the outer sides of the two cylinders 21, the movement of the guide cylinders 21 enables the movable telescopic assemblies 15 to stably perform horizontal reciprocating motion, the output end of each cylinder 21 is connected with a movable telescopic assembly 15, the movable telescopic assembly 15 comprises a movable transverse plate 151, a cylinder push plate 152, a guide push plate 153, a roller mounting plate 154, a first telescopic roller 155 and a second telescopic roller 156, an air cylinder push plate 152 and a guide push plate 153 are fixed on one side of the moving transverse plate 151 close to the transverse connecting plate 12, the air cylinder push plate 152 is connected with the output end of a piston rod of the air cylinder 21, the guide push plate 153 is connected with the guide assembly 22, roller mounting plates 154 are connected with two sides of the moving transverse plate 151, a first telescopic roller 155 and a second telescopic roller 156 which are rotatably connected with the roller mounting plates 154 are arranged between the roller mounting plates 154, the second telescopic roller 156 is arranged above the moving transverse plate 151, the first telescopic roller 155 is arranged on the oblique upper side of the second telescopic roller 155, a driving roller 13 is arranged on the opposite side of the belt frame and the first telescopic roller 155, two ends of the driving roller 13 penetrate through a belt seat bearing 23 fixed on the vertical plate 11 and are matched with the belt seat bearing 23 and are rotatably connected with the vertical plate 11 through the belt seat bearing 23, the tail end of one side of the driving roller 13 is connected with a driving motor for driving the driving roller to rotate, and the driving belt 17 to move around each roller by the rotation of the driving roller 13, the product on the belt is conveyed to a required position, the inner side of the belt 17 sequentially bypasses the driving roller 13, the driven roller I141, the telescopic roller I155, the driven roller IV 144 and the driven roller III 143, the outer side sequentially bypasses the adjusting roller 16, the driven roller II 142 and the telescopic roller II 156, the adjusting roller 16 is arranged on one side, away from the movable telescopic assembly 15, of the driving roller 13, and the adjusting roller 16 stretches into the belt 17 through being in sliding connection with the vertical plate 11. The cylinder 21 is started to push the movable telescopic assembly 15, so that the first telescopic roller 155 and the second telescopic roller 156 are pushed to move forwards together to drive the belt 17 to extend forwards, an overlarge gap is made up, a product with a small appearance is automatically conveyed to the next process, manual operation is not needed, and the production efficiency is improved.

Example 2

As shown in fig. 1-5, an automatic telescopic conveying belt for a film sealing and cutting packaging production line, comprises a belt frame, a driving roller 13, a driven roller 14, a movable telescopic assembly 15, an adjusting roller 16 and a belt 17, wherein the driven roller 14 comprises a first driven roller 141, a second driven roller 142, a third driven roller 143 and a fourth driven roller 144, the first driven roller 141 and the fourth driven roller 144 are arranged at two ends of the belt 147, a second driven roller 142 and a third driven roller 143 are arranged between the first driven roller 141 and the fourth driven roller 144, the second driven roller 142 is arranged above the third driven roller 143, the second driven roller 142 can increase the rotating friction force of the belt 17 to prevent the belt 17 from slipping, the belt frame comprises a vertical plate 11 and a transverse connecting plate 12, the vertical plate 11 is symmetrically arranged at two sides of the belt frame, one side of the vertical plate 11 close to the movable telescopic assembly 15 is provided with a first fixed plate 18, a second fixed plate connected with a movable connecting plate, and a movable connecting plate connected with a fixed plate connected with a movable plate connected, A second fixing plate 19, wherein the first fixing plate 18 is in a right triangle shape, the bevel edge is abutted against the bevel edge on one side of the vertical plate 11 and is connected with the vertical plate 11 through the second fixing plate 19, a fourth driven roller 144 rotationally connected with the first fixing plate 18 is arranged on the first fixing plate 18, so that a belt 17 can be conveniently installed and replaced, the transverse connecting plate 12 is connected with the vertical plates 11 on two sides through screws, cylinder bases 20 are symmetrically arranged on two sides of the transverse connecting plate 12, cylinders 21 are fixed on the cylinder bases 20, guide assemblies 22 fixed on the transverse connecting plate 12 are arranged on the outer sides of the two cylinders 21, the movement of the guide cylinders 21 enables the movable telescopic assemblies 15 to stably perform horizontal reciprocating motion, the output end of each cylinder 21 is connected with a movable telescopic assembly 15, the movable telescopic assembly 15 comprises a movable transverse plate 151, a cylinder push plate 152, a guide push plate 153, a roller mounting plate 154, a first telescopic roller 155 and a second telescopic roller 156, an air cylinder push plate 152 and a guide push plate 153 are fixed on one side of the moving transverse plate 151 close to the transverse connecting plate 12, the air cylinder push plate 152 is connected with the output end of a piston rod of the air cylinder 21, the guide push plate 153 is connected with the guide assembly 22, roller mounting plates 154 are connected with two sides of the moving transverse plate 151, a first telescopic roller 155 and a second telescopic roller 156 which are rotatably connected with the roller mounting plates 154 are arranged between the roller mounting plates 154, the second telescopic roller 156 is arranged above the moving transverse plate 151, the first telescopic roller 155 is arranged on the oblique upper side of the second telescopic roller 155, a driving roller 13 is arranged on the opposite side of the belt frame and the first telescopic roller 155, two ends of the driving roller 13 penetrate through a belt seat bearing 23 fixed on the vertical plate 11 and are matched with the belt seat bearing 23 and are rotatably connected with the vertical plate 11 through the belt seat bearing 23, the tail end of one side of the driving roller 13 is connected with a driving motor for driving the driving roller to rotate, and the driving belt 17 to move around each roller by the rotation of the driving roller 13, the product on the belt is conveyed to a required position, the inner side of the belt 17 sequentially bypasses the driving roller 13, the driven roller I141, the telescopic roller I155, the driven roller IV 144 and the driven roller III 143, the outer side sequentially bypasses the adjusting roller 16, the driven roller II 142 and the telescopic roller II 156, the adjusting roller 16 is arranged on one side, away from the movable telescopic assembly 15, of the driving roller 13, and the adjusting roller 16 stretches into the belt 17 through being in sliding connection with the vertical plate 11. The cylinder 21 is started to push the movable telescopic assembly 15, so that the first telescopic roller 155 and the second telescopic roller 156 are pushed to move forwards together to drive the belt 17 to extend forwards, an overlarge gap is made up, a product with a small appearance is automatically conveyed to the next process, manual operation is not needed, and the production efficiency is improved.

The first driven roller 141, the second driven roller 142, the third driven roller 143 and the driven roller 144 have the same structure, are rotatably connected with the vertical plate 11, and comprise a rotating shaft 145, a roller 146 and a bearing 147, the rotating shaft 145 is sleeved in the roller 145 and extends out of the roller 146, the two ends of the roller 146 are provided with the bearing 147, the outer side of the bearing 147 is provided with a shaft clamp 148, and the rotating shaft 145 is rotatably connected with the roller 146 through the bearing 147, so that the belt 17 can smoothly rotate under the driving of the driving roller 13.

The two ends of the rotating shaft 145 are inserted into the mounting holes 112 of the vertical plate 11 and are matched with the mounting holes 112, so that the driven roller 14 is more convenient and simpler to mount, and the mounting speed is increased.

The roller mounting plate 154 is arranged in parallel on the inner side of the vertical plate 11 and is in clearance fit with the vertical plate 11.

The upper end of the vertical plate 11 is provided with a bending edge 111, the bending edge 111 is parallel to the upper surface of the belt 17 and is inserted into the belt 17 to cover a gap between two side edges of the belt 17 and the vertical plate 11, so that dust is prevented from falling into the belt 17.

A sliding groove 113 and a stop block 116 are arranged on one side of the vertical plate 11, the sliding groove 113 is composed of a long hole 114 and a round hole 115, the long hole 114 is communicated with the round hole 115, the inner diameter of the round hole 115 is larger than the outer diameter of the adjusting roller 16, the adjusting roller 16 is convenient to mount and dismount, and the stop block 116 is arranged on one side of the long groove hole 114.

The adjusting roller 16 is inserted into the sliding groove 113 and is slidably connected with the sliding groove 113, the adjusting roller 16 is connected with the stopper 116 through a bolt arranged at the shaft end, the distance between the shaft end and the stopper 116 is adjusted through the bolt, and the tension of the belt 17 is adjusted through adjusting the distance.

The two guide assemblies 22 are symmetrically arranged on the outer sides of the two cylinders 21, so that the two sides of the cylinders 21 are stressed stably.

The wire guiding assembly 22 comprises a guide rod 221 and a linear slider 222, the linear slider 222 is fixed above the transverse connecting plate 12, the guide rod 221 is inserted into the linear slider 222 and is in sliding connection with the linear slider 222, one end of the guide rod 221 is connected with the guide push plate 153, and the guide rod 221 and the linear slider 222 are matched with the guide cylinder 21 to move, so that the first telescopic roller 155 and the second telescopic roller 156 can horizontally reciprocate rapidly and stably along the conveying direction.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides an automatic flexible conveyor belt for film seals cuts packaging production line which characterized in that: the belt conveyor comprises a belt frame, a driving roller, a driven roller, a movable telescopic assembly, an adjusting roller and a belt, wherein the driven roller comprises a first driven roller, a second driven roller, a third driven roller and a fourth driven roller, the first driven roller and the fourth driven roller are arranged at two ends of the belt, the second driven roller and the third driven roller are arranged between the first driven roller and the fourth driven roller, the second driven roller is arranged above the third driven roller, the belt frame comprises a vertical plate and a transverse connecting plate, the vertical plate is symmetrically arranged at two sides of the belt frame, one side of the vertical plate, which is close to the telescopic movable assembly, is provided with a first fixed plate and a second fixed plate which are movably connected, the first fixed plate is in a right-angle triangular shape, the bevel edge is abutted against the bevel edge at one side of the vertical plate and is connected with the vertical plate through the second fixed plate, the first fixed plate is provided with the fourth driven roller which is rotatably connected with the first fixed plate, the transverse connecting plate is connected with the vertical plates at two sides through screws, the two sides of the transverse connecting plate are symmetrically provided with cylinder seats, cylinders are fixed on the cylinder seats, guide assemblies fixed on the transverse connecting plate are arranged on the outer sides of the two cylinders, the output end of the cylinder is connected with a movable telescopic assembly, the movable telescopic assembly comprises a movable transverse plate, a cylinder push plate, a guide push plate, a roller mounting plate, a first telescopic roller and a second telescopic roller, the cylinder push plate and the guide push plate are fixed above one side of the movable transverse plate close to the transverse connecting plate, the cylinder push plate is connected with the output end of a piston rod of the cylinder, the guide push plate is connected with the guide assemblies, the roller mounting plates are connected with the two sides of the movable transverse plate, a first telescopic roller and a second telescopic roller which are rotatably connected with the roller mounting plates are arranged between the roller mounting plates, the second telescopic roller is arranged above the movable transverse plate, the first telescopic roller is arranged on the oblique upper side of the second telescopic roller, and the opposite side of the belt frame and the first telescopic roller is provided with a driving roller, the belt-seat-bearing-type belt conveyor is characterized in that two ends of the driving roller penetrate through belt-seat bearings fixed on the vertical plate and are matched with the vertical plate, the driving roller is rotatably connected with the vertical plate through the belt-seat bearings, the end of one side of the driving roller is connected with a driving motor for driving the driving roller to rotate, the driving roller rotates to drive the belt to move around each roller, the inner side of the belt sequentially bypasses the driving roller, the driven roller I, the telescopic roller I, the driven roller IV and the driven roller III, the outer side sequentially bypasses the adjusting roller, the driven roller II and the telescopic roller II, one side, away from the movable telescopic assembly, of the driving roller is provided with an adjusting roller, and the adjusting roller stretches into the belt through sliding connection with the vertical plate.

2. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 1, wherein: the first driven roller, the second driven roller, the third driven roller and the driven roller are all of the same structure and are rotatably connected with the vertical plate.

3. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 2, characterized in that: the two ends of the rotating shaft are inserted into the mounting holes of the vertical plates and matched with the mounting holes.

4. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 1, wherein: the roller mounting plate is arranged on the inner side of the vertical plate in parallel and is in clearance fit with the vertical plate.

5. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 1, wherein: the upper end of the vertical plate is provided with a bending edge, and the bending edge is parallel to the upper surface of the belt and inserted into the belt.

6. The automatic telescopic conveyor belt for a film sealing-cutting packaging production line as claimed in claim 5, characterized in that: one side of the vertical plate is provided with a sliding groove and a stop block, the sliding groove is composed of a strip hole and a round hole, the strip hole is communicated with the round hole, the inner diameter of the round hole is larger than the outer diameter of the adjusting roller, and the stop block is arranged on one side of the strip hole of the sliding groove.

7. The automatic telescopic conveyor belt for a film sealing-cutting packaging production line according to claim 6, characterized in that: the adjusting roller is inserted into the sliding groove and is in sliding connection with the sliding groove, the adjusting roller is connected with the stop block through a bolt arranged at the shaft end, and the distance between the shaft end and the stop block is adjusted through the bolt.

8. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 1, wherein: the two guide assemblies are symmetrically arranged on the outer sides of the two cylinders.

9. The automatic telescopic conveyor belt for a film sealing-cutting packaging line as claimed in claim 8, wherein: the guide assembly comprises a guide rod and a linear sliding block, the linear sliding block is fixed above the transverse connecting plate, the guide rod is inserted into the linear sliding block and is connected with the linear sliding block in a sliding mode, and one end of the guide rod is connected with the guide push plate.

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