CN210853149U - High-efficiency type bag sealing machine feeding device - Google Patents

Abstract

The utility model discloses a sack sealer loading attachment of high-efficient type belongs to the technical field of sack sealer manufacture equipment, and its technical scheme main points are including the fixed bolster, and the fixed bolster rotates the pivot that is connected with the installation raw materials reel, the pivot is provided with a plurality ofly, is provided with the viscose subassembly on the fixed bolster, and the viscose subassembly is including the U-shaped pole of settling a sticky tape section of thick bamboo, and the U-shaped both sides of U-shaped pole are the dead lever, and the U-shaped bottom is the dismounting rod, and the periphery of dismounting rod is located to the sticky tape section of thick bamboo cover, and the dead lever is kept away from the one end and the fixed bolster connection of dismounting rod, has reached and has shortened the time of pause in the manufacturing process greatly, has saved more operating time, has obviously improved production efficiency.

Description

High-efficiency type bag sealing machine feeding device

Technical Field

The utility model relates to a technical field of sack closer manufacture equipment, in particular to sack closer loading attachment of high-efficient type.

Background

With the progress of science and technology and the development of society, the transportation of goods in different areas and places is more and more frequent, and the valve bag is widely applied as a package with light weight, good sealing performance and low cost for the convenience of transportation and the requirements of sanitation and beauty. At present, a plurality of automatic bag sealing machines appear on the market, and can automatically complete the operations of sealing edges, gluing, cutting off and separating bags.

The prior Chinese patent with reference to the publication number of CN203544457U discloses a horizontal bag-making and packaging device, which comprises a film material unreeling device, a film material folding device and a bag body manufacturing unit, wherein the film material unreeling device is connected with the film material folding device; the film material unwinding device comprises a rotating shaft, a shaft center cylinder is sleeved outside the rotating shaft, and a film material roll is wound outside the shaft center cylinder. The horizontal type bag making is mainly used for making plastic bags, the raw materials are membrane materials, and when the membrane materials are conveyed, the membrane materials are sequentially unreeled, folded and continuously operated to make a bag body, so that the continuous production of the plastic bags can be realized.

However, in the above-mentioned horizontal bag-making and packaging apparatus, when the film material in the film material unwinding roll is about to run out and needs to be replaced, all the manufacturing processes must be stopped and a new film material roll must be replaced by a worker. The axis cylinder of the original film roll sleeved on the rotating shaft is required to be taken down and the rotating shaft is required to be taken down when the new film roll is replaced, the rotating shaft is sleeved on the axis cylinder of the new film roll, the original position is replaced again, the original used film and the replaced film are connected together, and then the bag body manufacturing process can be continued again, the replacement process is complex, the pause time of the manufacturing process is long, more working time is consumed, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a bag sealer loading attachment of high-efficient type has reached the time that has shortened pause in the manufacturing process greatly, has saved more operating time, has obviously improved production efficiency's effect.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a bag sealer loading attachment of high-efficient type, includes the fixed bolster, the fixed bolster rotates the pivot that is connected with the installation raw materials reel, the pivot is provided with a plurality ofly, is provided with the viscose subassembly on the fixed bolster, and the viscose subassembly is including the U-shaped pole of settling a sticky tape section of thick bamboo, and the U-shaped both sides of U-shaped pole are the dead lever, and the U-shaped bottom is the disassembly bar, and the periphery of disassembly bar is located to the sticky tape section of thick bamboo cover, and the one end and the fixed bolster connection of disassembly bar are kept away from to.

Through adopting above-mentioned scheme, set up a plurality of pivots on the fixed bolster to all can place the raw materials reel in every pivot. Meanwhile, the adhesive assembly is arranged on the fixed support, so that the adhesive tape can be used more conveniently and directly, and the problem that the working efficiency is influenced because the adhesive tape cannot be found in use is avoided; and the adhesive tape in the adhesive component is sleeved on the dismounting rod, so that the used adhesive tape can be conveniently replaced at any time.

One rotating shaft and the material winding drum thereof are arranged on the other rotating shaft for standby in the working process. When the film material in one of the raw material winding drums is about to be used up, the manufacturing process of the bag sealing machine is paused, the film material at the feeding end which is used in the manufacturing process is connected with the film material in the new raw material winding drum, the adhesive tape in the adhesive component can be conveniently and directly used for bonding, the normal manufacturing process of the bag sealing machine can be started, the used raw material winding drum is replaced in the manufacturing process, and the manufacturing process does not need to be paused any more. Therefore, the pause time in the manufacturing process is greatly shortened, more working time is saved, and the production efficiency is obviously improved.

The utility model discloses further set up to: one end of the dismounting rod is hinged to the fixed rod, so that the dismounting rod is turned to be close to and far away from the other fixed rod; the other end of the dismounting rod is in threaded connection with a third locking bolt, and the third locking bolt penetrates through the dismounting rod from the side wall of the dismounting rod and is tightly abutted to the fixed rod.

By adopting the above scheme, when the sticky tape that the cover was established on the dismounting rod was used up, unscrewed and taken off third locking bolt, will dismantle the upset of pole, take off an used up sticky tape section of thick bamboo, will dismantle the pole upset after the sticky tape of renewal and resume the normal position, can accomplish the change of sticky tape, simple and practical, convenient operation.

The utility model discloses further set up to: the viscose subassembly is connected with the U-shaped pole including fixing the regulation pole on the fixed bolster, regulation pole, and the U-shaped pole is connected with the subassembly that slides, and the subassembly that slides drives the U-shaped pole and slides along adjusting the pole.

Through adopting above-mentioned scheme, the subassembly that slides on adjusting the pole can make the U-shaped pole of settling a sticky tape section of thick bamboo slide along adjusting the pole, when using the sticky tape to bond the membrane material, can slide the U-shaped pole to the one side that is close to the raw materials reel to the position that the adjustment sticky tape was pulled out is applicable to not the raw materials reel of equidimension or the position change that the raw materials reel set up in the pivot. And the length of using the adhesive tape can be controlled, the adhesive tape does not need to be directly pulled out from the fixed supports at the two ends of the rotating shaft, and waste is avoided.

The utility model discloses further set up to: the sliding assembly comprises a sleeve sleeved outside the adjusting rod, the sleeve is connected with the fixing rod, a second locking bolt is connected with the sleeve in a threaded mode, and the second locking bolt penetrates through the sleeve from the outside of the sleeve to be abutted to the adjusting rod.

Through adopting above-mentioned scheme, the sleeve that slides is established to the cover on adjusting the pole, the sleeve is connected with the dead lever, can fix the sleeve in the certain position on adjusting the pole with the inseparable butt of second locking bolt in the outer wall of adjusting the pole, thereby make the dead lever on the sleeve, and the dismounting rod and the sticky tape of connecting on the dead lever fix certain position on adjusting the pole, adopt the sleeve to drive the dead lever along adjusting the gliding mode of pole, the locking of cooperation second locking bolt is fixed, can adjust the position of viscose subassembly more conveniently, make the more firm slip of viscose subassembly, and the design is simple and practical.

The utility model discloses further set up to the cover is equipped with retainer plate and retaining ring in the pivot of raw materials reel both sides, retainer plate and retaining ring fixed connection, the terminal surface of retaining ring and raw materials reel's terminal surface butt, retainer plate threaded connection has first locking bolt, and first locking bolt passes retainer plate and pivot butt by the outer wall portion of retainer plate.

Through adopting above-mentioned scheme, locate the pivot with fixed connection's retainer plate and retaining ring common cover, under the cooperation of retainer plate and pivot fixed and retaining ring is used, can be according to the position of the big or small adjustment retaining ring of raw materials reel, the terminal surface of retaining ring and the terminal surface butt of raw materials reel prevent that the raw materials reel from sliding in the pivot, have the effect that takes place the skew when preventing the ejection of compact of raw materials reel.

The utility model discloses further set up to: the retaining ring is connected with a stop lever, the distance from one end of the stop lever far away from the rotating shaft to the axis of the rotating shaft is greater than the distance from the circumferential outer wall of the retaining ring to the axis of the rotating shaft, and the stop lever is abutted against the end face of the raw material winding drum.

Through adopting above-mentioned scheme, the raw materials reel has often twined layer upon layer membrane material, and the rotation ejection of compact that the raw materials reel lasts under the drive of pivot, the diameter of new raw materials reel is great usually, and the retaining ring is less usually, and the in-process of ejection of compact is because raw materials reel both sides lack to shelter from probably to make the membrane material take place the offset, and then the ejection of compact direction of membrane material when influencing the ejection of compact brings the influence to the normal work of subsequent bag sealer. The stop rods are arranged on the two sides of the raw material winding drum, so that the problem of deviation when the raw material winding drum rotates to discharge is effectively solved, and the production efficiency of the bag sealing machine is improved.

The utility model discloses further set up to: the fixed support is provided with a plurality of tensioning rollers, and two ends of each tensioning roller are respectively connected with the corresponding fixed support in a rotating mode.

By adopting the scheme, the tensioning roller tensions the film material sent out from the raw material winding drum, so that the film material is convenient to convey and process in the subsequent processing process.

The utility model discloses further set up to: the both ends of pivot are provided with the alarm assembly of control raw materials reel surplus membrane material thickness, and the alarm assembly includes photoelectric switch, and photoelectric switch includes transmitter and receiver, and photoelectric switch coupling controller, controller coupling alarm.

Through adopting above-mentioned scheme, when the great normal material loading of membrane material thickness in the raw materials reel, the signal that the transmitter launches is sheltered from by the membrane material in the photoelectric switch, and the unable received signal of receiver, alarm can not take place. If the film material in the raw material reel is about to use up, the thickness of film material can't shelter from the signal, and the signal that the transmitter launches in the photoelectric switch can be received by the receiver, and thus, signal transmission to controller, controller control alarm send out the police dispatch newspaper, can in time remind the workman to change new raw material reel to the problem that the workman can't in time discover that the raw material film material is used up influences the manufacturing process of normal bag sealer.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a diagram illustrating the effect of the present invention;

fig. 4 is a partially enlarged schematic view at B in fig. 3.

Reference numerals:

1. fixing a bracket; 11. a vertical fixing frame; 12. a transverse fixing frame; 13. a fixing plate; 2. a rotating shaft; 21. a stationary ring; 211. a first locking bolt; 22. a retainer ring; 221. a through hole; 222. a stop lever; 23. a baffle plate; 24. a motor; 241. a driving gear; 25. a driven gear; 3. a raw material reel; 31. film material; 4. an adhesive assembly; 41. adjusting a rod; 42. a sleeve; 421. a second locking bolt; 43. a U-shaped rod; 431. fixing the rod; 432. disassembling the rod; 4321. a third locking bolt; 433. a tape cartridge; 5. a tension roller; 6. a photoelectric switch; 61. a transmitter; 62. a receiver.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

The utility model provides a bag closure machine loading attachment of high-efficient type, as shown in fig. 1 and fig. 2, including fixed bolster 1, be provided with two pivots 2 on the fixed bolster 1, all overlap on every pivot 2 and be equipped with raw materials reel 3, still be provided with viscose subassembly 4 on the fixed bolster 1.

The fixed bracket 1 comprises two vertical fixed frames 11, and the two vertical fixed frames 11 are arranged at intervals. Vertical mount 11 is cuboid strip structure, the vertical setting of length direction, and the bottom mounting is in ground, and the side that the area is the biggest in two vertical mounts 11 is parallel to each other to be corresponded.

Two sets of fixed plates 13 are arranged on the end faces of the two vertical fixed frames 11 on the same side, the two sets of fixed plates 13 are arranged up and down oppositely, each set comprises two fixed plates 13, the two fixed plates 13 in each set are connected to the two vertical fixed frames 11 respectively, and the heights of the two fixed plates 13 in each set are consistent. The fixed plate 13 is a right trapezoid plate-shaped structure, the side with the largest area in the fixed plate 13 of each group is parallel to and corresponds to each other, the length direction is perpendicular to the length direction of the vertical fixing frame 11, the right-angle side of the length direction is parallel to and close to the ground, and one side close to the vertical fixing frame 11 is fixedly connected with the vertical fixing frame 11.

And a rotating shaft 2 is arranged between each group of fixed plates 13. The rotating shaft 2 is a cylindrical rod-shaped structure, the axis direction is vertical to the length direction of the fixing plate 13, and two ends close to the fixing plate 13 are rotatably connected with the fixing plate 13. Two ends of the rotating shaft 2 after penetrating through the fixing plate 13 are provided with gears 25, a motor 24 is connected below the gears 25, the motor 24 drives a driving gear 241 to rotate, the driving gear 241 is meshed with a driven gear 25 to drive the driven gear 25 to rotate, and therefore the driven gear 25 drives the rotating shaft 2 to rotate.

Two sides of the rotating shaft 2 close to the fixing plate 13 are sleeved with blocking pieces 23. The baffle piece 23 is of a circular ring structure, the axis of the baffle piece coincides with the axis of the rotating shaft 2, and the end surface close to the fixed plate 13 is abutted against the corresponding inner side surface of the fixed plate 13. The blocking piece 23 can prevent the rotating shaft 2 from sliding towards two ends during the rotating process.

The rotating shaft 2 is sleeved with a raw material drum 3. The raw material drum 3 is cylindrical, and the axial direction is the same as that of the rotating shaft 2. The raw material roll 3 is wound with a plurality of layers of film materials 31.

Referring to fig. 4, two fixing rings 21 are sleeved on the rotating shaft 2 at two sides of the raw material reel 3. The retainer plate 21 is a circular ring structure, the axis direction is the same as the axis direction of the rotating shaft 2, and the circumferential inner wall is abutted to the circumferential outer wall of the rotating shaft 2. The fixing ring 21 is threadedly coupled with a first locking bolt 211. The axis direction of first lock bolt 211 is perpendicular to the axis direction of retainer plate 21, and first lock bolt 211 passes retainer plate 21 and the inseparable butt of the circumference outer wall of pivot 2 by the circumference outer wall of retainer plate 21 from the one end of keeping away from self nut, fixes retainer plate 21 on pivot 2, makes retainer plate 21 follow pivot 2 and rotates.

A retainer ring 22 is connected to one side of the retainer ring 21 close to the raw material reel 3. Retaining ring 22 is the ring shape structure, and the axis direction is the same with the axis direction of pivot 2, and the circumference inner wall supports with the circumference outer wall butt of pivot 2, and the external diameter is greater than the external diameter of retainer plate 21, is close to one side and retainer plate 21 fixed connection of retainer plate 21. The end face of the retainer ring 22 is provided with a plurality of uniformly distributed circular through holes 221 in a penetrating manner, the circular through holes 221 are circumferentially distributed along the circular center of the retainer ring 22, and the axial direction of the through holes 221 is the same as that of the retainer ring 22.

A stop lever 222 is attached to the retainer ring 22. The stop lever 222 is a U-shaped rod-shaped structure with a circular cross section, two ends of the U-shape are connected to the through hole 221, two sides of the U-shape are tightly abutted to two ends of the raw material reel 3 in the axial direction, and the length of the two sides of the U-shape is not less than the radius length of the raw material reel 3, so that the raw material reel 3 is prevented from shifting when rotating to discharge.

The two vertical fixing frames 11 are provided with adhesive assemblies 4, and each adhesive assembly 4 comprises an adjusting rod 41. The adjusting rod 41 is of a cuboid rod-shaped structure, the length direction of the adjusting rod is parallel to the axial direction of the raw material winding drum 3, and two sides of the length direction are respectively fixedly connected with the corresponding side faces, close to the rotating shaft 2, of the vertical fixing frames 11.

Referring to fig. 2, a sleeve 42 is fitted over the adjustment lever 41. The sleeve 42 is a rectangular parallelepiped tubular structure, the length direction of the sleeve is the same as that of the adjusting rod 41, and the inner wall of the sleeve 42 is connected with the outer wall of the adjusting rod 41 in a sliding manner. The sleeve 42 is threadedly coupled with a second locking bolt 421. The axis direction of the second locking bolt 421 is vertically arranged, and the second locking bolt 421 passes through the sleeve 42 from the outer wall of the sleeve 42 to be tightly abutted against the outer wall of the adjusting rod 41 from the end far away from the nut of the second locking bolt 421. When the sleeve 42 is far from the material winding drum 3, the second locking bolt 421 is loosened, and the sleeve 42 is slid to the vicinity of the end face of the material winding drum 3, so as to adapt to the material winding drums 3 with different sizes or the position change of the material winding drum 3 arranged on the rotating shaft 2.

A U-shaped bar 43 is attached to the top surface of the sleeve 42 with the U-shaped opening facing vertically towards the top surface of the sleeve 42. Two fixing rods 431 are arranged on two sides of the U-shape of the U-shaped rod 43, and the two fixing rods 431 are distributed at intervals along the width direction of the adjusting rod 41. The fixing rods 431 are cylindrical rod-shaped structures, are vertically arranged in the length direction, are fixedly connected with the top surface of the sleeve 42 at two ends close to the top surface of the sleeve 42, and are provided with U-shaped grooves with vertical and upward openings at the top ends of the two fixing rods 431.

The U-shaped bottom of the U-shaped rod 43 is a detaching rod 432, and the detaching rod 432 is arranged between the U-shaped grooves of the two fixing rods 431. The detaching rod 432 is a cylindrical rod-shaped structure, the length direction of the detaching rod is perpendicular to the axial direction of the raw material reel 3, one end of the detaching rod is hinged to one end of the fixing rod 431, which is far away from the sleeve, and the axial direction of the hinged shaft is parallel to the axial direction of the raw material reel 3. The other end of the detaching rod 432 is in threaded connection with a third locking bolt 4321, the axial direction of the third locking bolt 4321 is parallel to the axial direction of the raw material reel 3, and the third locking bolt 4321 penetrates through the detaching rod 432 from the side wall of the detaching rod 432 from the end far away from the nut of the third locking bolt 4321 and is tightly abutted to the top surface of the fixing rod 431.

Two groups of transverse fixing frames 12 are arranged between the end faces, far away from the fixing plate 13, of the vertical fixing frames 11 on the same side, the two groups of transverse fixing frames 12 are arranged up and down oppositely, each group of transverse fixing frames 12 comprises two transverse fixing frames 12, the two transverse fixing frames 12 in each group are connected to the two vertical fixing frames 11 respectively, and the heights of the two transverse fixing frames 12 in each group are consistent. The transverse fixing frame 12 is of a cuboid plate-shaped structure, the side faces with the largest area in the fixing frames 12 of each group are parallel to each other and correspond to each other, the length direction is horizontally arranged, and one end close to the vertical fixing frame 11 is fixedly connected with the vertical fixing frame 11.

Three tensioning rollers 5 are arranged between the two transverse fixing frames 12, and the three tensioning rollers 5 are horizontally and uniformly distributed at intervals along the length direction of the transverse fixing frames 12. The tensioning roller 5 is a cylindrical rod-shaped structure, the axis direction is the same as that of the rotating shaft 2, and two ends of the tensioning roller are respectively connected with the inner side surface of the corresponding transverse fixing frame 12 in a rotating mode.

The application process of this embodiment is as follows:

during operation of one shaft 2 and its material roll 3, a new material roll 3 can be mounted on the other shaft 2 for use. When the film material 31 in the working raw material reel 3 is about to be used up, the manufacturing process of the bag sealing machine is paused, the sleeve 42 is slid to one end of the raw material reel 3 along the adjusting rod 41, the adhesive tape is pulled out along the length direction of the raw material reel 3, the ending end of the film material 31 at the feeding end of the raw material reel 3 which is used originally is connected with the starting end of the film material 31 in the new raw material reel 3 by the adhesive tape, the normal manufacturing process of the bag sealing machine can be started, the pausing time in the manufacturing process is greatly shortened, more working time is saved, and the production efficiency is obviously improved.

Example 2

Referring to fig. 1 and 3, alarm components are arranged at both ends of the rotating shaft 2, and each alarm component comprises a photoelectric switch 6. The photoelectric switch 6 comprises a transmitter 61, the transmitter 61 is arranged at one end of the rotating shaft 2, and the other end of the rotating shaft 2 is provided with a corresponding receiver 62. The photoelectric switch 6 is coupled with the controller, and the controller is coupled with the alarm.

The using process of the embodiment is as follows: when the thickness of the film material 31 in the raw material reel 3 is larger and the material is normally loaded, the signal emitted by the emitter 61 in the photoelectric switch 6 is shielded by the film material 31, the receiver 62 cannot receive the signal, and the alarm cannot give an alarm. If the film material 31 in the raw material reel 3 is about to be used up, the thickness of the film material 31 cannot shield signals, the signals emitted by the emitter 61 in the photoelectric switch 6 can be received by the receiver 62, therefore, the signals are transmitted to the controller, the controller controls the alarm to give an alarm, a worker can be reminded in time to connect the ending end of the film material 31 at the original used feeding end with the starting end of the film material 31 in the new raw material reel 3 by using the adhesive tape, and the problem that the raw material film material 31 is used up cannot be found in time by the worker, so that the normal manufacturing process of the bag sealing machine is influenced.

The above-mentioned embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

Claims (8)

1. The utility model provides a bag sealer loading attachment of high-efficient type, includes fixed bolster (1), and fixed bolster (1) rotates pivot (2) that are connected with installation raw materials reel (3), its characterized in that: the utility model discloses a fixing support, including pivot (2), fixed bolster (1) is provided with viscose subassembly (4), and viscose subassembly (4) are including U-shaped pole (43) of settling a sticky tape section of thick bamboo (433), and the U-shaped both sides of U-shaped pole (43) are dead lever (431), and the U-shaped bottom is disassembly bar (432), and the periphery of disassembly bar (432) is located to a sticky tape section of thick bamboo (433) cover, and the one end that disassembly bar (432) were kept away from in dead lever (431) is connected with fixed bolster (1).

2. The bag sealer loading attachment of the high efficiency type as claimed in claim 1, wherein: one end of the dismounting lever (432) is hinged to one fixed lever (431), so that the dismounting lever (432) is turned to be close to and far away from the other fixed lever (431); the other end of the dismounting rod (432) is in threaded connection with a third locking bolt (4321), and the third locking bolt (4321) penetrates through the dismounting rod (432) from the side wall of the dismounting rod (432) and is tightly abutted to the fixed rod (431).

3. The bag sealer loading attachment of the high efficiency type as claimed in claim 1, wherein: viscose subassembly (4) are including fixing regulation pole (41) on fixed bolster (1), adjust pole (41) and be connected with U-shaped pole (43), and U-shaped pole (43) are connected with the subassembly that slides, and subassembly drive U-shaped pole (43) that slides along adjusting pole (41).

4. A bag sealer loading attachment of high efficiency type according to claim 3, characterized in that: the sliding assembly comprises a sleeve (42) sleeved outside the adjusting rod (41), the sleeve (42) is connected with a fixing rod (431), a second locking bolt (421) is connected to the sleeve (42) in a threaded mode, and the second locking bolt (421) penetrates through the sleeve (42) from the outside of the sleeve (42) to be abutted to the adjusting rod (41).

5. The bag sealer loading attachment of the high efficiency type as claimed in claim 1, wherein: the material winding drum is characterized in that a fixing ring (21) and a check ring (22) are sleeved on the rotating shafts (2) on two sides of the material winding drum (3), the fixing ring (21) and the check ring (22) are fixedly connected, the end face of the check ring (22) is abutted to the end face of the material winding drum (3), the fixing ring (21) is in threaded connection with a first locking bolt (211), and the first locking bolt (211) penetrates through the fixing ring (21) and the rotating shaft (2) to be abutted to the outer wall of the fixing ring (21).

6. The bag sealer loading attachment of the high efficiency type of claim 5, characterized in that: the retaining ring (22) is connected with a stop lever (222), the distance from one end, far away from the rotating shaft (2), of the stop lever (222) to the axis of the rotating shaft (2) is larger than the distance from the outer circumferential wall of the retaining ring (22) to the axis of the rotating shaft (2), and the stop lever (222) is abutted to the end face of the raw material winding drum (3).

7. The bag sealer loading attachment of the high efficiency type as claimed in claim 1, wherein: the fixed support (1) is provided with a plurality of tensioning rollers (5), and two ends of each tensioning roller (5) are respectively rotatably connected with the corresponding fixed support (1).

8. The bag sealer loading attachment of the high efficiency type as claimed in claim 1, wherein: the both ends of pivot (2) are provided with the warning subassembly of control raw materials reel (3) surplus membrane material (31) thickness, and the warning subassembly includes photoelectric switch (6), and photoelectric switch (6) include transmitter (61) and receiver (62), and photoelectric switch (6) are coupled the controller, and the controller is coupled the alarm.

Images