JP2012224442A - Feeding conveyor of lateral bag-making/filling/packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feeding conveyor of a lateral bag-making/filling/packaging machine, wherein an endless chain having pusher attachments at predetermined intervals can be moved easily when the feeding conveyor is cleaned without removing the endless chain from a sprocket.SOLUTION: A drive transmission system of the feeding conveyor includes: a driving gear 22 with a feeding conveyor drive servo motor SM1 as a drive source; a transmission gear 24 which can be fitted to and removed from the driving gear; and a driven gear 23 for moving the endless chain 8 to which the pusher attachments 9 are attached. Therefore, when the feeding conveyor is cleaned without removing the endless chain 8 from the sprocket 14a, the endless chain 8 to which the pusher attachments are attached at the predetermined intervals can be moved easily by disengaging the transmission gear 24 from the driving gear 22, so that cleaning can be done quickly and easily.

Description

  The present invention relates to a supply conveyor for a horizontal bag making filling and packaging machine.

  In general, in a horizontal packaging machine, a belt-shaped packaging material is pulled out from a film roll by a film conveying device and sent downstream, and the film is transferred in a horizontal direction while being formed into a cylindrical shape by a cylinder making machine. Articles are sequentially supplied into the cylindrical film. A center seal is applied to the overlapping portion in the longitudinal direction of the tubular film, and further, end seals are applied to the front and rear portions by an end seal device so as to sandwich the article in the tubular film, and cutting is performed. In this way, a so-called pillow package is produced. The film transport device, the supply device, and the end seal device are each driven by a servomotor and controlled to operate in synchronization with each other by a control device (see, for example, Patent Document 1).

  A supply apparatus is a supply conveyor comprised from the endless chain to which the pusher attachment which supports and conveys the rear part of a to-be-packaged object is attached at predetermined intervals. The endless chain is driven by a supply conveyor drive servomotor via a power transmission mechanism that spans the sprockets arranged at the front and rear and the plurality of sprockets. Therefore, the rotational force of the drive motor is transmitted to the sprocket, and the sprocket is driven to rotate. Since the endless chain meshes with the sprocket teeth, the endless chain also rotates with the rotation of the sprocket (see, for example, paragraph 3 and paragraph 23 of Patent Document 2). The supply conveyor is driven at a speed based on the packaging capacity data input.

  By the way, in the supply conveyor in the pillow packaging machine, for example, when conveying food, it is necessary to clean the supply conveyor in order to keep the supply conveyor clean. If the product residue is severe, remove the endless chain from the sprocket and clean the endless chain and the pusher attachment attached to it, or remove the endless chain and clean the interior of the supply conveyor where there is space. . As a method for easily cleaning the supply conveyor, a method for easily removing an endless chain as shown in Patent Document 2 or a supply conveyor as shown in Patent Document 3 is used as a main body of a horizontal bag filling and packaging machine. The method of removing from is proposed.

  However, when the product is changed or when the product residue is lightly attached, the product is cleaned by blowing the product residue by air blowing without removing the endless chain from the sprocket. In this case, the safety cover on the side of the supply device is opened and air is blown to the place to be cleaned.To clean the entire circumference of the endless chain with pusher attachments attached at a predetermined interval, the endless chain must be manually It will be done by moving. Since the safety cover is opened, the safety circuit is activated and the power supply to the supply conveyor drive servomotor is cut off, so it is possible to grab the endless chain or pusher attachment and move it manually. Since the motor shaft attached with the mechanism is still connected, it is a work that requires a lot of force.

Japanese Patent Publication No.7-110645 JP 2009-203056 A JP 2006-335466 A JP 2010-105669 A

  When cleaning the supply conveyor without removing the endless chain from the sprocket, there is a need for a supply conveyor for a horizontal bag filling and packaging machine that can easily move the endless chain with pusher attachments attached at predetermined intervals. ing.

According to the first aspect of the present invention, the belt-shaped packaging material is pulled out from the film roll by the film conveying device and is sent downstream, and the film is transferred in the horizontal direction while being formed into the cylindrical packaging material by the cylinder-making device. Then, the articles to be packaged are sequentially supplied into the cylindrical packaging material, a center seal is applied to the longitudinally overlapped portion of the cylindrical packaging material, and the articles in the cylindrical film are sandwiched between the front and rear parts, respectively. End-sealing is performed by an end-seal device, cutting is performed, and in a horizontal bag making and filling and packaging machine that manufactures a package body containing a packaged article,
The supply device is a supply conveyor configured with an endless chain that is supported and driven by sprockets at both ends, to which pusher attachments that support and convey the rear portion of the package are attached at predetermined intervals,
The supply conveyor includes a drive transmission system including a driven gear that rotates a sprocket from a drive gear driven by a servo motor through a transmission gear;
2. The supply conveyor of a horizontal bag making and packaging machine, wherein the transmission gear is configured to be able to be engaged and detached with respect to the drive gear.

  According to the first aspect of the present invention, the drive transmission system of the supply conveyor of the horizontal bag making filling and packaging machine is constituted by a driven gear that rotates a sprocket from a drive gear driven by a servo motor through a transmission gear, Since the gear can be engaged and disengaged with respect to the drive gear, the endless chain of the supply conveyor can be easily moved manually when the transmission gear is disengaged.

  A second aspect of the present invention relates to the first aspect of the present invention, wherein the transmission gear is rotatably fixed to a clutch shaft via a bearing, and the clutch shaft is disposed on the supply conveyor. The supply conveyor of the horizontal bag making filling and packaging machine is provided with a function of engaging and disengaging the transmission gear with respect to the drive gear by operating the clutch shaft.

  According to the second aspect of the present invention, the operation of engaging and disengaging the transmission gear with respect to the drive gear is performed by the clutch shaft.

  A third aspect of the invention relates to the second aspect of the invention, and when the clutch shaft is operated and the transmission gear is detached from the drive gear, the clutch shaft is fixed by a stopper member. The horizontal type is characterized in that when the transmission gear holds the disengaged position and the stopper member is removed, the clutch shaft is unlocked and the transmission gear returns to the mating position. It is a supply conveyor of a bag making filling and packaging machine.

  According to the invention of claim 3, when the transmission gear is in the disengaged position, the clutch shaft is fixed by the stopper member, the disengaged position is held, and when the stopper member is released, the clutch shaft is returned to the mating position. Therefore, operation at the time of cleaning the supply conveyor of the horizontal bag making filling and packaging machine can be easily performed.

  The invention according to claim 4 relates to the invention according to claim 2 or claim 3, wherein the operation of the clutch shaft is performed manually. is there.

  The invention according to claim 5 relates to the invention according to claim 2 or claim 3, wherein the operation of the clutch shaft is performed by an actuator. is there.

  According to invention of Claim 4 or Claim 5, operation of the said clutch shaft can also be performed manually, and it can also equip with an actuator and can be performed automatically. If the configuration is performed manually, the configuration is simplified and the manufacturing cost can be reduced. If an actuator such as an electromagnetic solenoid, an air cylinder, or a motor is provided, it can be operated by a button operation, so that it can be handled easily.

  The supply conveyor of the horizontal bag making filling and packaging machine of the present invention is provided with a drive transmission system, a drive gear using a servo motor as a drive source, a transmission gear configured to be able to be engaged and disengaged from the drive gear, and a pusher attachment. Since it consists of a driven gear that moves the endless chain, when cleaning the supply conveyor without removing the endless chain from the sprocket, the pusher attachment can be easily separated at a predetermined interval by removing the transmission gear from the drive gear. The attached endless chain can be moved and can be cleaned quickly and easily.

It is the schematic which showed the whole horizontal type bag making filling packaging machine. It is the schematic of a supply conveyor part. It is the schematic of the drive part of a supply conveyor when a transmission gear exists in a meshing position. It is the schematic of the drive part of a supply conveyor when a transmission gear exists in a detachment position. It is a figure which shows the relationship between a drive gear and a driven gear, and a sprocket. It is a figure which shows the structure of a transmission gear and a clutch shaft. It is a figure which shows the example of the clutch mechanism provided with the actuator.

  A horizontal bag making and filling machine according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a horizontal bag making and filling machine to which the present invention is applied. FIG. 1A is a schematic view seen from the side, and FIG. 1B is a schematic view seen from the top. The strip-shaped packaging material Fw drawn out from the film roll Fr mounted on the winding shaft 1 is conveyed downstream by the paper feed roller 2, is curved by the cylinder-making machine 3, is polymerized at the longitudinal edge, and is tubular-wrapped. A material Ft is formed. The tubular packaging material Ft is conveyed by rotating the paper drawing roller 4 composed of a pair of rolls that hold the superposed portion of the tubular packaging material Ft while the packaged product P is conveyed into the cylinder by the supply conveyor 7. Then, it is conveyed further downstream. The center seal device 5 downstream of the paper drawing roller 4 performs center seal on the overlapping surface of the cylindrical packaging material Ft. Thereafter, the cylindrical packaging material Ft containing the packaged product P is subjected to end sealing and cutting before and after the packaged product P inside the cylindrical packaging material Ft is sandwiched by the end sealer 6 to manufacture the pillow package Bp. To do. The end seal device incorporates a cutter (not shown) and cuts it.

  A film transport device composed of a paper feed roller 2, a paper drawing roller 4, a center seal device 5, a supply device composed of a supply conveyor 7, and an end seal device 6 are driven by a servomotor and operate in synchronization with each other by a control device. So that it is controlled. Since a technique for driving and synchronizing the film transport, supply, and end seal device with separate servo motors is well known, a film transport device comprising a paper feed roller 2, a paper drawing roller 4, and a center seal device 5 are omitted. The supply device comprising the supply conveyor 7 and the end seal device 6 are each driven by a servomotor and controlled to operate in synchronization with each other by a control device. The technology for driving and synchronizing the film transport, supply, and end seal device with separate servo motors is well known and will not be described in detail (for example, see Patent Document 1).

  The belt-shaped packaging material Fw and the cylindrical packaging material Ft are conveyed by the cooperation of the paper feed roller 2, the paper drawing roller 4, and the center seal device 5. These rolls may be driven by a single servo motor. In this embodiment, the paper feed roller 2 is a paper feed roller drive servo motor SM2A, the paper draw roller is a paper draw roller drive servo motor SM2B, and a center seal device. Are driven separately by the center seal device drive servo motor SM2C, and synchronously convey the packaging material downstream at a predetermined speed.

  The end seal device 6 of the present embodiment is called a box motion type, and a pair of heater blocks 6a and 6b arranged above and below with the tubular film Ft sandwiched between the seal surfaces. It moves with a predetermined trajectory while maintaining That is, both the heater blocks 6a and 6b move close to each other from the reference position and sandwich the tubular film Ft from above and below, thereby pressurizing and heating the film portion in contact with the sealing surface with a predetermined pressure. The heater blocks 6a and 6b move forward along the moving direction of the tubular film Ft while maintaining the state in which the heater films 6a and 6b approach each other and sandwich the tubular film Ft as described above. The moving speed at this time is equal to the moving speed of the tubular film Ft. When the pair of heater blocks 6a and 6b move by a predetermined distance, the heater blocks 6a and 6b move away from each other and move in the direction opposite to the moving direction of the tubular film Ft to reach the reference position. Since the box motion operation is a conventionally known technique (see, for example, paragraphs 23 to 24 of Patent Document 4), the detailed explanation is omitted, but the heater blocks 6a and 6b are each mounted on a mounting base (not shown). The cam floor (not shown) provided on the mounting base matches the groove cam (not shown) provided on the cam plate (not shown), and revolves as described above according to the shape of the groove cam. . The cam plate (not shown) is rotated by the servo motor SM3 so as to synchronize with the conveyance speed of the tubular film Ft. Also, instead of using a cam in this way, a plurality of drive motors such as a drive motor for moving the heater blocks 6a and 6b up and down and a drive motor for moving forward and backward are provided, and each of these drive motors is provided. The heater blocks 6a and 6b can be revolved by operating at an appropriate timing.

  The supply conveyor 7 supports and drives the endless chain 8 to which the pusher attachment 9 that supports and conveys the rear part of the article P to be packaged is attached, the sprocket 14b that supports the endless chain 8, and the endless chain 8. The sprocket 14a is composed of a supply conveyor drive servomotor SM1 for supplying drive to the sprocket 14a. The supply conveyor 7 is driven by a supply conveyor drive servomotor SM1, and a pulse corresponding to the transfer position and transfer speed of the supply conveyor 7 from an encoder (not shown) attached to the supply conveyor drive servomotor SM1. A signal is output. The supply conveyor 7 is driven at a speed based on the data input of the packaging capacity. In addition, each pusher attachment 9 attached to the supply conveyor 7 was moved in a state where it was tilted downward at a position where the article to be packaged P was transferred to the film Ft formed in a cylindrical shape by the cylinder making device 3. After that, it goes up again and supports each package.

  The structure of the supply conveyor 7 is demonstrated using FIG. FIG. 2A is a top view of the supply conveyor 7, and FIG. 2B is a view drawn by removing the top plate 15 and the product guide tables 17a and 17b from FIG. 2A so that the inside can be seen. FIG. 2C is a side view and a front view of the supply conveyor 7. As shown in FIGS. 2 (a), 2 (b), and 2 (c), the supply conveyor 7 has a frame composed of two side plates 11a and 11b, a plurality of stays 12, and a top plate 15, and a leg 13 With front and back. The top plate 15 is provided with a notch through which the pusher attachment 9 passes. In addition, product guide tables 17a and 17b are provided on the top plate 15, and a conveyance path for the package P is configured. Although not shown, the product guide tables 17a and 17b are configured to be movable in the left-right direction according to the width of the packaged product P. The packaged product P is transported in the downstream direction while being supported by the pusher attachment 9 on the transport path formed by the top plate 15 and the product guide tables 17a and 17b. As shown in FIG. 2B, a sprocket drive shaft 20a is disposed near the downstream end and a sprocket support shaft 20b is disposed near the upstream end, and the sprockets 14a and 14b are attached. An endless chain 8 is stretched over the sprockets 14a and 14b at both ends, and pusher attachments 9 are attached to the endless chain 8 at a predetermined interval. The sprocket 14a is fixed to the sprocket drive shaft 20a and is a part of the supply conveyor drive unit 10. The sprocket 14b is fixed to the sprocket support shaft 20b and supports and follows the endless chain 8. A supply conveyor drive unit 10 is provided on the side of the sprocket drive shaft 20a near the downstream end, and the supply conveyor is moved by the rotation of the supply conveyor drive servo motor SM1. The side plates 11a and 11b are provided with a plurality of openings used as access hatches during maintenance such as cleaning and a safety cover 16 covering the openings. Although not shown, the opening and the safety cover 16 that covers it are provided with a safety switch. When the safety cover is opened, an alarm state is set and the power supply to the supply conveyor drive servo motor SM1 is cut off to ensure safety. It is configured so that it can be secured.

  The supply conveyor drive part 10 is demonstrated using FIG. The supply conveyor drive unit 10 includes a clutch unit 27, a drive unit 28, and a driven unit 29. The configuration of the drive unit 28 will be described with reference to FIG. 5 in which the drive / follower unit is enlarged. A supply conveyor drive servo motor SM1 which is a drive source of the supply conveyor is attached to the side plate 11b, and a rotating shaft protrudes inside the supply conveyor 7. A pulley 31 a is attached to the rotating shaft and is rotated by the pulley 31 b via the toothed belt 30. The pulley 31 b is fixed to the drive gear shaft 21 together with the drive gear 22. The drive gear shaft 21 is rotatably fixed to the support shaft 39 via a bearing (not shown). The support shaft 39 is fixed between the side plates 11a and 11b. In the driven portion 29, the sprocket 14a and the driven gear 23 are attached to the sprocket drive shaft 20a. The sprocket drive shaft 20a is rotatably fixed to the support shaft 39 via a bearing (not shown). The support shaft 39 is fixed between the side plates 11a and 11b. As described above, the drive unit 28 and the driven unit 29 are rotatable independently of each other with respect to the support shaft 39. Therefore, the rotation of the drive unit 28 is not transmitted to the driven unit 29 unless the transmission gear 24 described later is passed.

  Next, the clutch portion 27 will be described with reference to FIG. 3 and FIG. 6 in which the clutch portion is enlarged. The transmission gear 24 is rotatably attached to the clutch shaft 25 via a transmission gear bearing 26. The clutch shaft 25 is fixed to the side plate 11a by the fixing member 32a in the direction crossing between the side plates 11a and 11b, and the side plate is fixed to the other end by the fixing member 32b via the return spring 33. It is fixed to 11b and can move forward and backward with respect to the side plates 11a and 11b. A clutch operation handle 38 is provided at the end of the clutch shaft 25 in the direction of the side plate 11b. A stopper member 34 is provided between the clutch operation handle 38 and the side plate 11b so as to be fixed to the side plate 11b. The stopper member 34 is configured such that a stopper pin 37 and a stopper knob 40 are integrally formed, and a stopper spring 35 is configured to attract the stopper pin 37 and the stopper knob 40 toward the clutch shaft 25. On the other hand, the clutch shaft 25 has a stopper receiving hole 36 into which the stopper pin 37 is engaged.

  The clutch shaft 25 is disposed so as to penetrate the stopper member 34 side plate 11b, the return spring 33, the fixing member 32, and the side plate 11a. First, both ends of the return spring 33 are fixed to the fixing member 32b and the side plate 11b, and the fixing member 32b is fixed to the clutch shaft 25 at a position where the return spring 33 does not expand and contract. Next, when the clutch shaft 25 is in a position where the return spring 33 does not expand and contract, the transmission gear 24 is rotatably fixed via the bearing 26 at a position where the transmission gear 24 is engaged with both the drive gear 22 and the driven gear 23. . Further, the fixing member 32a is fixed to the clutch shaft 25 at a position in contact with the side plate 11a at a position where the return spring 33 does not expand and contract. Thus, the clutch shaft 25 cannot be operated in a direction in which the transmission gear 24 is separated from only the driven gear 23 from a position where the transmission gear 24 is engaged with both the drive gear 22 and the driven gear 23, and the transmission gear 24 is separated only from the drive gear 22. It is possible to operate in the direction to do. The clutch shaft 25 is provided with a stopper pin 37 of the stopper member 34 at a position where the transmission gear 24 is completely separated from the drive gear 22 when the transmission gear 24 is operated in a direction in which the transmission gear 24 is separated only from the drive gear 22. Since the mating stopper receiving hole 36 is formed, when the clutch operating handle 38 is pulled forward and the transmission gear 24 and the driving gear 22 are completely separated, the stopper pin 37 and the stopper receiving hole 36 are mated at that position. Thus, the conduction gear 24 is kept in the detached state of the drive gear 22. FIG. 4 shows a state in which the conduction gear 24 holds the disengaged state of the drive gear 22. When the stopper knob 40 of the stopper member 34 is pulled in this state, the engagement between the stopper pin 37 and the stopper receiving hole 36 is released, so that the clutch shaft 25 moves forward due to the repulsive force of the return spring 33 and the transmission gear 24 moves. It will return to the position which meshes with both the drive gear 22 and the driven gear 23.

  As described above, in the horizontal bag making and filling machine according to the present embodiment, when the product is changed or the product residue is lightly attached, the product residue is removed by air blowing without removing the endless chain from the sprocket. When cleaning by blowing away, the machine is stopped, the openings provided in the side plates 11a, 11b of the supply conveyor 7 and the safety cover 16 covering the openings are opened, and the clutch operation handle 38 is pulled to the front side. The conduction gear 24 and the drive gear 22 are disengaged and their positions can be maintained. In this state, since the endless chain or the pusher attachment can be grasped and manually moved, the entire circumference of the endless chain 8 can be easily cleaned by air blowing while being manually moved. Since the safety cover 16 is open at this time, the power supply to the supply conveyor drive servo motor SM1 is cut off and mechanically separated from the drive system, so the operation is doubly safe. is there.

  In the present embodiment, the clutch operating handle 38, the stopper portion, and the return spring 33 are provided on the clutch shaft 25 for manual operation. However, it is of course possible to provide an actuator instead of these to automate the operation. Is possible. As the actuator, an electromagnetic solenoid, an air cylinder, a motor, or the like can be used.

  FIG. 7 shows an example in which the air cylinder 41 is used as an actuator. In this example, the transmission gear 24 and the drive gear 22 are engaged when the air cylinder 41 is in the forward movement state, and the transmission gear 24 and the drive gear 22 are separated in the reverse movement state. The clutch shaft 25 and the air cylinder 41 are connected to each other. 42. The forward / backward control of the air cylinder 41 may be performed manually by providing a switch, or may be performed automatically depending on the state of the safety switch of the safety cover 16 or the operating state of the machine.

DESCRIPTION OF SYMBOLS 1 Winding shaft 2 Paper feed roller 3 Cylinder 4 Paper drawing roller 5 Center seal device 6 End sealer 6a Upper heater block 6b Lower heater block 7 Supply conveyor 8 Endless chain 9 Pusher attachment 10 Supply conveyor drive part 11a, 11b Side plate 12 Stay 13 Leg 14a, 14b Sprocket 15 Top plate
16 Opening and safety cover 17a, 17b for covering it Product conveyance guide 20a Sprocket drive shaft 20b Sprocket support shaft 21 Drive gear shaft 22 Drive gear 23 Drive gear 24 Transmission gear 25 Clutch shaft 26 Transmission gear bearing 27 Clutch portion 28 Drive unit 29 Drive unit 30 Toothed belt 31a, 31b Pulley 32a, 32b Fixing member 33 Return spring 34 Stopper member 35 Stopper spring 36 Stopper receiving hole 37 Stopper pin 38 Clutch operation handle 39 Support shaft 40 Stopper knob 41 Air cylinder 42 Connection Member SM1 Supply conveyor drive servomotor SM2A Paper feed roller drive servomotor SM2B Paper draw roller drive servomotor SM2C Center seal device drive Bomota SM3 end sealing apparatus drive servo motor

Claims (5)

The belt-shaped packaging material is pulled out from the film roll by the film conveying device and sent downstream, and the film is transferred in the horizontal direction while being formed into the cylindrical packaging material by the cylinder making machine, and is fed into the cylindrical packaging material by the supply device. The products to be packaged are sequentially supplied, a center seal is applied to the longitudinal overlapping portion of the cylindrical packaging material, and further, end seals are applied to the front and rear portions by an end seal device so as to sandwich the article in the cylindrical film. In a horizontal bag making and packing machine for manufacturing a package body in which a packaged object is embedded,
The supply device is a supply conveyor configured with an endless chain that is supported and driven by sprockets at both ends, to which pusher attachments that support and convey the rear portion of the package are attached at predetermined intervals,
The supply conveyor includes a drive transmission system including a driven gear that rotates a sprocket from a drive gear driven by a servo motor through a transmission gear;
A feed conveyor for a horizontal bag making filling and packaging machine, wherein the transmission gear is configured to be able to be engaged and detached with respect to the drive gear.   The transmission gear is rotatably fixed to a clutch shaft via a bearing, and the clutch shaft is disposed on the supply conveyor, and the transmission gear is moved with respect to the drive gear by operating the clutch shaft. The supply conveyor of the horizontal bag making filling and packaging machine according to claim 1, further comprising a function of combining and separating.   When the clutch shaft is operated and the transmission gear is disengaged from the drive gear, the clutch shaft is fixed by a stopper member, the conduction gear holds the disengaged position, and the stopper member is removed. The supply conveyor of the horizontal bag making filling and packaging machine according to claim 2, wherein the clutch shaft is unlocked and the transmission gear returns to the mating position.   The supply conveyor of the horizontal bag making filling and packaging machine according to claim 2 or 3, wherein the operation of the clutch shaft is performed manually.   The supply conveyor of the horizontal bag making filling and packaging machine according to claim 2 or 3, wherein the operation of the clutch shaft is performed by an actuator.

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