JP5339447B2 - Continuous sheet breaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rapturing device of a continuous sheet body which is reduced in size by simplifying a device configuration and enables efficient cutting operation. <P>SOLUTION: The rapturing device of the continuous sheet body includes: supply rollers 32 normally reversely rotated by a motor 40 in a normal rotating direction which feed the continuous sheet body 20 ahead and in a reverse rotating direction which moves the continuous sheet body in a return direction; discharge rollers 36 arranged at the downstream side of the supply rollers 32, and a control part for controlling normal and reverse rotation of the motor 40. The discharge rollers 36 is normally rotated during normal rotation of the motor 40 and rotation is locked during reverse rotation of the motor 40. The control part controls switching between the normal rotation of the motor 40 feeding the continuous sheet body 20 ahead and allowing a rapturing part to be positioned at an intermediate part between the supply rollers 32 and the discharge rollers 36 and the reverse rotation of the motor 40 reversely rotating only the supply rollers 32 and rapturing the continuous sheet body 20 at the rapturing part. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present application relates to a continuous sheet breaking device that sequentially breaks a continuous sheet body provided with breaking portions such as perforations at a predetermined interval in the feed direction at the position of the breaking portion into pieces.

  In continuous paper, there are products formed so that perforations that cross in the width direction are formed at regular intervals in the longitudinal direction of the paper and can be cut into pieces at the position of the perforations. There is a product in which a perforation is provided for each printing unit, and a piece of printed matter is obtained by cutting the perforation. In addition, products such as plastic bags, in which perforations (weak body parts) are provided at regular intervals in the longitudinal direction and are separated by perforations to form individual bags, are provided.

Products (continuous sheet bodies) that have weak parts formed at weaker intervals than other parts so that they can be separated by pulling them from both sides, such as perforations, are in the printing field. It is used in various fields, not limited to continuous paper used in Japan.
As a device for cutting such a continuous sheet body at a broken portion or a weak portion, a device for cutting a broken portion such as a perforation using a cutter blade (Patent Document 1 or the like), or a continuous sheet at a position where the perforation is sandwiched An apparatus (such as Patent Document 2) that cuts the body by applying a force in the opposite direction has been proposed.

JP-A-5-69385 Japanese Patent Laid-Open No. 7-9399

  However, the breaking device based on the method of cutting the continuous sheet by abutting the cutter blade on the perforation has a problem that the mechanism becomes complicated to operate the cutter blade, and it is difficult to reduce the size of the device. Since the cutter blade is operated every time, there is a problem that the cutting time becomes long and efficient cutting cannot be performed. In addition, the conventional apparatus that cuts the continuous sheet member by applying a force in the opposite direction across the perforation has a problem that the structure of the apparatus becomes complicated.

  The present invention has been made to solve these problems, and it is possible to reduce the size by simplifying the configuration of the apparatus, and to provide a continuous sheet body breaking apparatus that enables efficient cutting operation. The purpose is to provide.

In order to achieve the above object, the present invention comprises the following arrangement.
That is, the continuous sheet breaking device according to the present invention is driven by the motor in a driving motor, a forward rotation direction for feeding the continuous sheet body forward, and a reverse rotation direction for moving the continuous sheet body in the return direction. A rupture portion provided in the continuous sheet body in parallel with the supply roller on the downstream side of the supply roller driven in reverse rotation and the supply roller in the forward feed direction of the continuous sheet body is between the supply roller and the supply roller. And a control unit that controls forward / reverse rotation of the motor. The discharge roller is driven to rotate forward when the motor rotates forward, and the reverse of the motor. The rotation is locked at the time of rotation, and the control unit forward-feeds the continuous sheet member to position the breaking portion between the supply roller and the discharge roller, and the supply roller. A reverse rotation of said motor to break the continuous sheet in the reverse rotation to the breaking portion only, and controlling switches.
The motor, the supply roller, and the discharge roller can be configured such that a circulating body such as a belt is stretched over and connected to each other, and the motor and the supply roller are connected via a first gear mechanism. It can also be set as the structure which connects and connects the said motor and the said discharge roller via a 2nd gear mechanism.

  Further, a first sensor that detects whether or not a continuous sheet body exists at a downstream position of the discharge roller, and detects whether or not a continuous sheet body exists at an intermediate position between the supply roller and the discharge roller. And (a) the position of the front end of the continuous sheet fed forward by the forward rotation of the motor is detected by the first sensor, and the supply roller And (b): after the step (a), the rotation of the motor is switched to the reverse rotation after the step (a), A step of breaking the continuous sheet body at the breaking portion and detecting that the continuous sheet body is broken by the second sensor; and (c): after the step (b), the rotation of the motor is set to a normal rotation. Switch, break into pieces A step of forwarding a the rupture products and continuous sheet bodies, by controlling repeat, it is possible to break the continuous sheet sequentially, before the feed while pieces.

  According to the continuous sheet breaking apparatus according to the present invention, the apparatus configuration can be simplified, and the continuous sheet can be accurately broken from the fracture portion, and the continuous sheet can be efficiently broken to break the pieces. Goods can be obtained.

It is a front view which shows the structure of 1st Embodiment of the fracture | rupture apparatus of a continuous sheet body. It is a top view of the fracture | rupture apparatus of a continuous sheet body. It is a left view of the continuous sheet body breaking device. It is a right view of the fracture | rupture apparatus of a continuous sheet body. It is a perspective view of the 2nd discharge roller. It is a time chart which controls the motor for a drive. It is a front view which shows the structure of 2nd Embodiment of a fracture | rupture apparatus. It is a right view in the EE line of FIG.

(First embodiment)
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a continuous sheet body breaking device according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a continuous sheet breaking device (hereinafter referred to as “breaking device”), and FIG. 2 is a plan view. The breaking device 5 includes a housing 10 that is formed in a box shape with an open top, and a breaking mechanism 30 that breaks the continuous sheet 20 at a position where a breaking portion such as a perforation is provided.
The housing 10 is provided with a supply unit 12 that houses the continuous sheet body 20 before breaking on one side of the breaking mechanism 30 and supplies the continuous sheet body 20 toward the breaking mechanism 30. On the side, a storage portion 14 is provided for storing the ruptured product 20a that has been separated into pieces.

  The continuous sheet body 20 to be cut by the breaking device 5 of the present embodiment is provided with perforations as break portions formed at regular intervals in the longitudinal direction of the continuous sheet body 20 and alternately folded at the positions of the perforations. Yes. The supply unit 12 is formed in a planar rectangle that matches the planar shape of the continuous sheet body 20 so that the folded continuous sheet body 20 can be stored, and the supply unit 12 has a depth that can store the folded continuous sheet body 20. It is formed in the size.

The storage part 14 of the broken product 20a is formed in a rectangular planar shape that matches the planar shape of the broken product 20a. The planar shape and depth dimension of the supply unit 12 and the storage unit 14 of the breaking device 5 of the present embodiment are the same.
1 and 2 show a state in which the continuous sheet body 20 is stored in the supply unit 12 and the continuous sheet body 20 is pulled out from the supply unit 12 toward the breaking mechanism 30. A state in which several pieces of the fractured product 20a are stored in the storage unit 14 is shown.

  At a middle position between the supply part 12 of the continuous sheet body 20 and the storage part 14 of the fractured product 20a, the continuous sheet body 20 drawn out from the supply part 12 is supported in a flat shape and forwarded to the storage part 14. A support portion 31 as a guide portion is provided. The support part 31 is provided at the same height as the opening edges of the supply part 12 and the storage part 14 so as to integrally connect the opening edges of the supply part 12 and the storage part 14 facing each other.

The breaking mechanism 30 is close to the supply roller 32 disposed on one side of the support portion 31, that is, the side close to the supply portion 12 of the continuous sheet body 20, and to the other side of the support portion 31, that is, the storage portion 14 of the breakable product 20a. And a discharge roller 36 disposed on the side. The supply roller 32 and the discharge roller 36 are arranged such that both the axial directions are orthogonal to the feeding direction of the continuous sheet body 20.
By disposing the supply roller 32 and the discharge roller 36 apart from each other, an empty region sandwiched between the supply roller 32 and the discharge roller 36 is formed on the support portion 31. This empty area is an area used for the operation of cutting the continuous sheet body 20, and the installation interval between the supply roller 32 and the discharge roller 36 is set so that the cutting operation is accurately performed.

(Configuration of supply roller)
FIG. 3 is a left side view of the breaking device 5 (as viewed from the side where the continuous sheet body 20 is fed into the breaking mechanism 30), and the configuration of the supply roller 32, the driving motor 40, and the like from the side direction. Shows the state of viewing.
The supply roller 32 includes a first supply roller 32 a in which a support shaft 321 is disposed above the support portion 31, and a second supply roller 32 b in which a support shaft 322 is disposed below the support portion 31. The support shafts 321 and 322 of the first supply roller 32a and the second supply roller 32b are respectively covered with roller bodies 323 and 324, and the roller bodies 323 and 324 are arranged to face each other. In addition, in FIG. 3, the roller body 323 of the 1st supply roller 32a is shown with sectional drawing. The roller bodies 323 and 324 are formed to have a length substantially the same as the width of the continuous sheet body 20.

The support shafts 321 and 322 are supported so as to span between the housing wall 10a on the front side of the housing 10 and the housing wall 10b on the rear side. The shaft holes 101 and 102 of the support shaft 321 of the first supply roller 32a provided in the housing walls 10a and 10b are formed as long holes extending in the direction (vertical direction) facing the second supply roller 32b. Is done. As a result, the support shaft 321 can be brought into contact with and separated from the second supply roller 32b.
The pressing pieces of the springs 50 and 51 locked to the protrusions 104 and 105 provided on the inner surfaces of the housing walls 10a and 10b are in contact with the upper surface of the outer periphery of the support shaft 321. This pressing piece has the action of elastically pressing the support shaft 321 toward the second supply roller 32b at all times. The support positions of the second supply roller 32b on the housing walls 10a and 10b are fixed, and the first supply roller 32a elastically presses the second supply roller 32b by the action of the springs 50 and 51.

The first supply roller 32a and the second supply roller 32b pinch the continuous sheet body 20 between the outer peripheral surfaces of the roller bodies 323 and 324, and rotate the first supply roller 32a and the second supply roller 32b (positive). Along with the reverse rotation), the continuous sheet 20 is transferred while being elastically pinched in the thickness direction.
The clamping pressure between the first supply roller 32a and the second supply roller 32b can be adjusted by exchanging the springs 50 and 51 having different elastic coefficients.
For the roller bodies 323 and 324, an appropriate material such as a plastic material, a rubber material, or a metal material can be used. The material of the roller bodies 323 and 324 can be appropriately selected according to the material of the continuous sheet body 20 and the like.

A first shaft 34a is fixed to an end portion of the support shaft 321 of the first supply roller 32a that protrudes from the housing wall 10a to the front side, and a support shaft that protrudes from the housing wall 10a of the second supply roller 32b. The second gear 34 b is fixed to the end portion of 322. The first gear 34a and the second gear 34b are provided so as to mesh with each other.
A first pulley 42 that is linked to the driving motor 40 is fixed to the support shaft 322 further on the tip side than the position where the second gear 34b is fixed.

The drive motor 40 is fixed to the lower part of the housing wall 10a, the end of the drive shaft 40a protrudes outward from the housing wall 10a, and a driving pulley 41 is provided at the protruding end of the first pulley 42. And the vertical position (rotational surface position) are matched and fixed. Between the driving pulley 41 and the first pulley 42, a belt (timing belt) 44 is placed as a circulating member.
FIG. 1 shows that the first gear 34a is attached coaxially with the first supply roller 32a, and the second gear 34b and first pulley 42 are attached coaxially with the second supply roller 32b. .

(Configuration of discharge roller)
4 is a right side view of the breaking device 5 (as viewed from the side where the broken product 20a is discharged from the breaking mechanism 30) and shows the positional relationship between the discharge roller 36 and the driving motor 40. FIG.
The discharge roller 36 includes a first discharge roller 36 a in which a support shaft 361 is disposed above the support portion 31, and a second discharge roller 36 b in which a support shaft 362 is disposed below the support portion 31. The support shafts 361 and 362 of the first discharge roller 36a and the second discharge roller 36b are respectively covered with roller bodies 363 and 364, and the roller bodies 363 and 364 are arranged to face each other. In FIG. 4, the roller body 363 is shown by a cross-sectional view.

The support shafts 361 and 362 are arranged with the axial direction orthogonal to the feeding direction of the continuous sheet body 20, and the shaft holes 103 and 104 provided in the housing walls 10a and 10b that support the support shaft 361 are elongated holes. The first discharge roller 36a is formed and supported so as to be able to contact and separate from the second discharge roller 36b. The pressing pieces of the springs 50 and 51 abut on the upper surface of the outer periphery of the support shaft 361, and the support shaft 361 The configuration in which the roller is always elastically pressed toward the second discharge roller 36b is the same as the configuration in the first supply roller 32a and the second supply roller 32b.
As shown in FIGS. 1 and 2, the springs 50 and 51 extend the ends of the pressing pieces onto the support shafts 321 and 361 of the supply roller 32 and the discharge roller 36, and the first supply roller 32 a and the first discharge The roller 36a is elastically pressed toward the second supply roller 32b and the second discharge roller 36b.

The third gear 38a is fixed to the end of the support shaft 361 of the first discharge roller 36a that protrudes from the housing wall 10a to the front side, and the support shaft protrudes from the housing wall 10a of the second discharge roller 36b. A fourth gear 38 b is fixed to the end portion of 362. The third gear 38a and the fourth gear 38b are provided so as to mesh with each other.
A second pulley 43 connected to the driving motor 40 is fixed to the support shaft 362 further on the tip side than the position where the fourth gear 38b is fixed. The second pulley 43 is connected to a pulley 41 that is fixed to a drive shaft 40 a of the motor 40 via a belt 44.
As shown in FIG. 1, the belt 44 is stretched so as to circulate between the driving pulley 41 and the first pulley 42 and the second pulley 43. The circulation path of the belt 44 has a substantially equilateral triangle shape when viewed from the front.

The second pulley 43 has a rotational driving force on the support shaft 362 only when the motor 40 is driven in a direction in which the discharge roller 36 is rotated forward (rotation in a direction in which the continuous sheet body 20 and the fractured product 20a are fed forward). When the motor 40 rotates in the reverse direction, the second pulley 43 is idled (freely rotated) with respect to the support shaft 362 and is linked to the support shaft 362 via the first one-way clutch 39a. The first one-way clutch 39 a functions as a clutch mechanism that controls the connection between the motor 40 and the discharge roller 36.
The first pulley 42 attached to the support shaft 322 of the second supply roller 32b is not provided with a clutch mechanism and is directly connected to the support shaft 322, and the motor 40 and the supply roller 32 are always directly connected.

  The second discharge roller 36b includes a second one-way clutch 39b. In the present embodiment, the second one-way clutch 39b is connected to the rear end of the support shaft 362 of the second discharge roller 36b coaxially with the support shaft 362, and the second one-way clutch 39b is housed in the housing wall 10b. A concave portion 10c is provided so that the second discharge roller 36b is attached to the housing 10.

  FIG. 5 is a perspective view of the second discharge roller 36b. A roller body 364 is provided around the support shaft 362, a fourth gear 38 b and a second pulley 43 are mounted on one end side of the support shaft 362, and a second shaft coaxial with the support shaft 362 is provided on the other end side of the support shaft 362. The one-way clutch 39b is mounted. The second one-way clutch 39 b is attached to the support shaft 362 coaxially with the second pulley 43. The second one-way clutch 39b is fixed so as to fit into the recess 10c of the housing wall 10b, thereby allowing the roller body 364 to rotate forward and preventing the roller body 364 from rotating backward. Eggplant.

  FIG. 1 shows a state in which a third gear 38a is attached coaxially with the first discharge roller 36a, and a fourth gear 38b and second pulley 43 are attached coaxially with the second discharge roller 36b. FIG. 2 also shows that a recess 10c that houses the second one-way clutch 39b protrudes outward from the housing wall 10b on the rear side of the housing 10.

  The second one-way clutch 39b is provided as a lock mechanism that prevents the first discharge roller 36a and the second discharge roller 36b from rotating in reverse. The lock mechanism that prevents reverse rotation of the first discharge roller 36a and the second discharge roller 36b is not limited to the configuration of the present embodiment. For example, instead of providing the second one-way clutch 39b on the second discharge roller 36b, a first-way clutch for preventing reverse rotation is provided on the first discharge roller 36a, and the first discharge roller 36a and the second discharge roller It can also be set as the structure which prevents reverse rotation of 36b. Further, instead of providing a lock mechanism on the other end side of the support shaft 362, a lock mechanism can be provided on one end side of the support shaft 362.

(Control mechanism)
As shown in FIG. 2, the first sensor 61 is disposed on the downstream side of the discharge roller 36 on the case wall 10 b on the rear side of the case 10, and the second sensor is located at a middle position between the supply roller 32 and the discharge roller 36. The sensor 62 is arranged.
The first sensor 61 is used when controlling the feed position and feed amount of the continuous sheet body 20 in order to align the continuous sheet body 20 at a predetermined breaking position. When the first sensor 61 and the front end portion of the continuous sheet body 20 intersect (overlap), it is detected that the front end of the continuous sheet body 20 has reached the position of the first sensor 61.

The second sensor 62 is a sensor for detecting a state in which the continuous sheet body 20 is broken. When the continuous sheet body 20 is broken, the state in which the second sensor 62 is covered with the continuous sheet body 20 in the state before the breakage (in the overlapping position) is the state where the continuous sheet body 20 is broken and overlapped. It can be detected by detecting that the state has been released.
The first sensor 61 is for detecting whether or not the continuous sheet member 20 is present on the downstream side of the discharge roller 36. When a separation sensor is used, the sensor installation position is It does not have to be downstream of the discharge roller 36. The second sensor 62 is not limited to the method of being installed at an intermediate position between the supply roller 32 and the discharge roller 36 as long as it can be detected by the sensor used.

  In the breaking device 5 of the present embodiment, the continuous sheet body 20 is set to be broken in a region sandwiched between the supply roller 32 and the discharge roller 36. The second sensor 62 is arranged aiming at a position (region) where the continuous sheet member 20 is broken and opened. Since the break position of the continuous sheet body 20 may vary depending on the product, the second sensor 62 sets the arrangement position according to the product.

As the first sensor 61 and the second sensor 62, any sensor can be used as appropriate regardless of whether it is a contact type or a non-contact type as long as it can detect the presence or absence of a detection target.
In addition to products that do not transmit light or suppress light transmission, such as paper, objects to be detected such as plastic sheets and plastic bags may easily be detected. Therefore, a sensor capable of accurate detection according to the detection target is used.

  The driving motor 40 is controlled based on detection signals (output signals) from the first sensor 61 and the second sensor 62. FIG. 2 shows that the first sensor 61 and the second sensor 62 and the driving motor 40 are connected to the control unit 60.

(Operation of breaking device)
Then, the effect | action which fractures | ruptures the continuous sheet body 20 using the fracture | rupture apparatus 5 of this embodiment is demonstrated with FIG. FIG. 6 shows the detection signals of the first sensor 61 and the second sensor 62, and the case where the motor rotates in the normal direction and the case in which the motor rotates in reverse.

First, when the continuous sheet body 20 is set in the supply unit 12 of the breaking device 5, the end of the continuous sheet body 20 accommodated in the supply unit 12 is pulled out with the driving of the device turned off, and the roller of the supply roller 32 An end portion is inserted between the bodies 323 and 324, and the continuous sheet body 20 is drawn by the roller bodies 323 and 324.
When the drive of the apparatus is turned ON, the motor 40 is driven to rotate forward by the control unit 60, the continuous sheet body 20 is clamped and forward-fed to the roller bodies 323 and 324 of the supply roller 32, and the roller of the discharge roller 36 The continuous sheet body 20 is clamped to the bodies 363 and 364 and fed forward.

  As the motor 40 rotates forward, the first pulley 42 and the second pulley 43 connected to each other via the pulley 44 and the belt 44 fixed to the drive shaft 40a of the motor 40 rotate forward, and the supply roller 32 and the discharge The roller 36 is rotationally driven in the forward feed direction. In the supply roller 32, the first supply roller 32a and the second supply roller 32b are driven to rotate forward via the first and second gears 34a and 34b, and in the discharge roller 36, the third and fourth The discharge roller 36 is driven to rotate forward via the gears 38a and 38b. The second pulley 43 is engaged with the support shaft 362 during the forward rotation and drives the discharge roller 36 in the forward rotation by the action of the first one-way clutch 39a.

When the front end of the continuous sheet body 20 is fed forward to the position where the first sensor 61 is disposed by the supply roller 32 and the discharge roller 36, a detection signal is output from the first sensor 61 to the control unit 60, The forward rotation drive by the motor 40 is stopped (step of aligning the continuous sheet member).
A point A in FIG. 6 is a point in time when the front end of the continuous sheet body 20 has advanced from the state where the continuous sheet body 20 is not supplied to the position of the first sensor 61, and is slightly delayed from the point A. Control for switching from forward rotation to reverse rotation is started.
In the present embodiment, when the front end of the continuous sheet body 20 reaches the position of the first sensor 61, the perforation (breaking portion) provided in the continuous sheet body 20 includes the supply roller 32 and the discharge roller. It has moved to the approximate center position of the region between 36.

  When the motor 40 rotates in the reverse direction and the belt 44 starts to circulate in the reverse direction, the first pulley 42 rotates in the reverse direction, the second supply roller 32b rotates in the reverse direction, and the second gear 34b and the first gear 34a. Then, the first supply roller 32a starts to rotate backward. The continuous sheet body 20 is elastically clamped by the first supply roller 32 a and the second supply roller 32 b by the elastic force of the springs 50 and 51, and a force to pull back in the reverse direction starts to act on the continuous sheet body 20.

  On the other hand, the second pulley 43 rotates idly with respect to the support shaft 362 in the reverse rotation direction by the action of the first one-way clutch 39a, and the reverse rotation driving force of the motor 40 does not act on the discharge roller 36. Further, the reverse rotation of the second discharge roller 36b is blocked by the action of the second one-way clutch 39b, and the reverse rotation of the first discharge roller 36a engaged with the second discharge roller 36b is also blocked.

  Therefore, when the operation of pulling back the continuous sheet body 20 by the supply roller 32 occurs, the continuous sheet body 20 is pulled back in a state of being clamped in the thickness direction by the discharge roller 36. In the continuous sheet body 20, the front portion of the perforation is clamped by the discharge roller 36, and the rear portion of the perforation is pulled backward by the supply roller 32, so that a tensile force acts on the continuous sheet body 20 with the perforation interposed therebetween. And the continuous sheet body 20 is fractured | ruptured by the tensile force exceeding the breaking force of the perforation (breaking part) of the continuous sheet body 20 acting.

  After the continuous sheet body 20 is broken, the supply roller 32 rotates slightly in the reverse direction, and the broken front end of the continuous sheet body 20 clamped by the supply roller 32 moves backward from the breaking position. As a result, the space between the rear end of the broken product 20a that remains after being clamped by the discharge roller 36 and the front end of the continuous sheet body 20 that has been broken is opened, and an open signal from the second sensor 62, that is, the continuous sheet body. A signal with 20 broken is output. A point B in FIG. 6 is a point in time at which the break of the continuous sheet member 20 is detected by the second sensor 62 (step of detecting breakage of the continuous sheet member).

The control unit 60 stops the reverse rotation of the motor 40 based on the signal that detects this breakage, and switches to the normal rotation. A point C in FIG. 6 is a time point at which the motor 40 starts to be switched from reverse rotation to normal rotation.
When the motor 40 starts to rotate forward, the motor 40 and the discharge roller 36 are brought into an engaged state, and the ruptured product 20 a separated into pieces is forwarded by the discharge roller 36, and the ruptured product 20 a is sent to the storage unit 14. (Step of feeding the broken product and the continuous sheet body forward).
From the supply roller 32, the continuous sheet body 20 is sent to the discharge roller 36 for the next breaking operation. The continuous sheet body 20 fed to the discharge roller 36 is stopped when the front end position is detected by the first sensor 61.
In FIG. 6, point D is the time when the broken product 20 a is discharged by the discharge roller 36, and point A is the time when the broken continuous sheet body 20 is fed forward and the front end is detected by the first sensor 61.

  In this way, by controlling the forward / reverse rotation of the motor 40 by the control unit 60, the transfer operation of the continuous sheet body 20 that positions the broken portion of the continuous sheet body 20 in the region sandwiched between the supply roller 32 and the discharge roller 36. Then, the operation of repeatedly breaking the continuous sheet body 20 at the fracture portion by the breaking mechanism 30 is repeatedly performed, and a broken product 20a obtained by dividing the continuous sheet body 20 into individual pieces is obtained. The fractured product 20 a is stored in the storage unit 14.

  As described above, the first sensor 61 is a sensor for aligning the continuous sheet body 20 at a predetermined breaking position. In the above example, when the front end of the continuous sheet body 20 is detected by the first sensor 61, the forward rotation (forward feed operation) of the motor 40 is stopped. The method is not limited. For example, the first sensor 61 detects the time point (position) at which the front end of the continuous sheet body 20 passes, and controls the feed amount of the continuous sheet body 20 from that time point. The continuous sheet body 20 may be controlled to be broken after being positioned at an intermediate position between the supply roller 32 and the discharge roller 36. For controlling the feed amount (transfer amount) of the continuous sheet member 20, a method of detecting and controlling the rotation amount of the motor 40 can be used.

According to the method of breaking the continuous sheet body 20 by controlling the feed amount of the continuous sheet body 20, the installation interval between the supply roller 32 and the discharge roller 36 can be increased even if the arrangement interval of the broken portions of the continuous sheet body 20 is widened. There is an advantage that the device can be formed compactly without having to be widened.
On the other hand, when the first sensor 61 detects the front end of the continuous sheet body 20, the method of stopping the conveyance of the continuous sheet body 20 and performing the breaking process can accurately detect the feed position of the continuous sheet body 20, and accurately. In addition, there is an advantage that an efficient breaking process can be performed.
Note that the arrangement interval between the supply roller 32 and the discharge roller 36 is set with a margin in consideration of variations in the feed amount of the continuous sheet member 20 and variations in the breaking position when the continuous sheet member 20 is broken. Is good.

Although the said embodiment is an example which fractures | ruptures the continuous sheet | seat body 20 using two sensors, the 1st sensor 61 and the 2nd sensor 62, only the 1st sensor 61 or the 2nd sensor 62 is used. It is also possible to control to break the continuous sheet body 20 by installing only the above.
When only the first sensor 61 is installed, the following control is performed.
After ensuring the reliable breaking performance of the continuous sheet body 20 by the reverse rotation of the motor 40, the front end of the continuous sheet body 20 is detected by the first sensor 61, and the continuous sheet body 20 is aligned with the breaking position (continuous sheet) After the body positioning step), the rotation of the motor 40 is switched to reverse rotation, and the continuous rotation of the motor 40 by a predetermined angle (predetermined radians) causes the continuous sheet body 20 to break at the breaking position (continuous sheet body breaking step). ). Next, the rotation is switched to forward rotation, the continuous sheet body 20 and the broken product broken into pieces are forwarded, and the first sensor 61 outputs an open signal, that is, a signal that the continuous sheet body 20 is broken. By detecting (a step of detecting the forward feed and breakage of the continuous sheet body), the continuous sheet body 20 can be broken while confirming the breakage of the continuous sheet body 20.
When the continuous sheet body 20 is broken, the gap between the broken product and the broken end of the continuous sheet body 20 opens, so that it is detected that the broken product has passed the monitoring position by the first sensor, and the continuous sheet body 20 breaks. You can know what was done.
When the continuous sheet body 20 cannot be broken, the controller 60 notifies the administrator of a break error, and the continuous sheet body 20 that could not be broken is controlled to be broken manually.

When only the second sensor 62 is installed, the following control is performed.
After the motor 40 is rotated in the reverse direction and the second sensor 62 detects that the continuous sheet body 20 is broken, the motor 40 is rotated forward so that the front end (broken end) of the continuous sheet body 20 is caused by the second sensor 62. A point in time when the monitoring position is passed is detected, and the motor 40 is rotated forward at a predetermined angle (predetermined radians) with this point as a reference to align the continuous sheet body 20 with the breaking position (continuous sheet body alignment step). Next, the rotation of the motor 40 is switched to reverse rotation, and when the reverse rotation of the predetermined rotation is continued, the breakage of the continuous sheet body 20 is confirmed by detecting the release signal from the second sensor 62 (continuous sheet body). Detecting the fracture of Next, the motor 40 is switched to forward rotation, and the broken piece and the continuous sheet body are fed forward (forward feeding process).
By repeating these steps, the continuous sheet body 20 can be sequentially forwarded and broken while confirming breakage of the continuous sheet body 20.
Also in this case, when the break of the continuous sheet body 20 cannot be confirmed, the controller 60 notifies the administrator of a break error so that the continuous sheet body 20 that could not be broken is manually broken. .

  The breaking device 5 of the present embodiment has a configuration in which a supply roller 32 and a discharge roller 36 are connected to a single driving motor 40, and there is an advantage that the device configuration is simplified. In addition, the separation interval between the supply roller 32 and the discharge roller 36 is secured, and the continuous sheet body 20 is disposed so as to be disposed between the supply roller 32 and the discharge roller 36 to be broken. Even if the rupture position varies back and forth due to variations in the supply position of the continuous sheet body 20 and variations in strength of the fractured portion, the continuous sheet body 20 can be reliably broken. In addition, the supply roller 32 and the discharge roller 36 are commonly used for the supply operation and the breaking operation of the continuous sheet body 20, thereby reducing the number of parts and enabling an efficient breaking operation. Have.

(Second Embodiment)
The breaking device 6 of the present embodiment is an example in which a driving motor 40, a supply roller 32, and a discharge roller 36 are connected by a gear mechanism.
7 shows a state in which the driving mechanism of the breaking device 6 is viewed from the front, and FIG. 8 shows a side view in the direction of the EE line in FIG. The configuration of the supply roller 32 and the discharge roller 36, the configuration of the first and second gears 34a and 34b, and the configuration of the third and fourth gears 38a and 38b are the same as in the first embodiment.

In the present embodiment, the gear 70 is fixed to the drive shaft 40a of the drive motor 40, and the fifth gear 72 is fixed to the support shaft 322 of the second supply roller 32b. An intermediate gear is arranged in the middle of the gear 72 to connect the motor 40 and the supply roller 32 to each other.
The intermediate gear includes a first intermediate gear 71a and a second intermediate gear 71b fixed to one end of a support shaft 711 that is pivotally supported between the housing walls 10a and 10b. The driving gear 70 meshes with the first intermediate gear 71a, and the fifth gear 72 meshes with the second intermediate gear 71b.
An intermediate gear is further provided on the other end side of the support shaft 711 (outside the rear housing wall 10b), and the gear fixed to the other end of the support shaft 322 and the intermediate gear mesh with each other. ing.
A gear mechanism that connects the motor 40 and the supply roller 32 corresponds to a first gear mechanism.

Regarding the discharge roller 36, a sixth gear 75 is fixed on the support shaft 362 of the second discharge roller 36 b, and the motor 40 is connected to the motor 40 via an intermediate gear disposed between the gear 70 and the sixth gear 75. The discharge roller 36 is connected.
The intermediate gear includes a first intermediate gear 74a and a second intermediate gear 74b fixed to one end of a support shaft 741 that is pivotally supported between the housing walls 10a and 10b. The driving gear 70 meshes with the first intermediate gear 74a, and the sixth gear 75 meshes with the second intermediate gear 74b.
In FIG. 8, a support shaft 741 is pivotally supported on the housing walls 10a and 10b, and a first intermediate gear 74a fixed to one end of the support shaft 741 meshes with the driving gear 70, so that the first intermediate gear The second intermediate gear 74b arranged coaxially with the first intermediate gear 74a meshes with the sixth gear 75 on the rear side of 74a.

A third intermediate gear 74c is fixed to the rear end of the support shaft 741, and the third intermediate gear 74c is fixed to a gear 75a fixed to the end of the support shaft 362 of the second discharge roller 36b. Mesh. A gear connecting the motor 40 and the discharge roller 36 corresponds to a second gear mechanism.
In the discharge roller 36, the structure in which the third intermediate gear 74c and the gear 75a meshing with the third intermediate gear 74c are attached is the same as that of the supply roller 32. That is, the third intermediate gear is fixed to the rear end of the support shaft 711, and the third intermediate gear is configured to mesh with the gear fixed to the end of the support shaft 322.

The first intermediate gear 71 a connected to the supply roller 32 is directly connected to the support shaft 711, and the supply roller 32 rotates forward and backward as the drive motor 40 rotates forward and backward.
On the other hand, the first intermediate gear 74a linked to the discharge roller 36 is supported by the first intermediate gear 74a when the first intermediate gear 74a rotates in the forward direction (rotation in the direction to feed the continuous sheet body 20 forward). A first one-way clutch 76 a is attached coaxially to the support shaft 741 as a clutch mechanism in which the first intermediate gear 74 a idles with respect to the support shaft 741 when the shaft 741 rotates integrally and reversely rotates. Further, on the rear side of the support shaft 741 supported by the housing wall 10b, when the first intermediate gear 74a rotates forward, the support shaft 741 is idled and the first intermediate gear 74a rotates reversely. In this case, a second one-way clutch 76b is attached as a lock mechanism for preventing the support shaft 741 from rotating in the reverse direction.

According to the breaking device 6 according to the present configuration, when the motor 40 rotates in the forward direction, the supply roller 32 is connected by the connection of the motor 40, the first intermediate gear 71a, the second intermediate gear 71b, and the fifth gear 72. Rotates forward. Further, due to the forward rotation of the motor 40, the discharge roller 36 is rotated forward by the linkage of the motor 40, the first intermediate gear 74a, the second intermediate gear 74b, and the sixth gear 75.
With respect to the discharge roller 36, the first intermediate gear 74 a rotates in the forward direction, whereby the second intermediate gear 74 b and the third intermediate gear 74 c are driven to rotate in the forward direction via the support shaft 741. The side gear 75 a is also rotationally driven, and the discharge roller 36 is rotationally driven by the rotational driving force acting on both ends of the support shaft 362. Similarly, the supply roller 32 is rotationally driven by the rotational driving force acting on both ends of the support shaft 322.

When the drive motor 40 rotates in the reverse direction, the first intermediate gear 74a on the discharge roller 36 side rotates idly with respect to the support shaft 741, and therefore the driving force of the motor 40 does not act on the discharge roller 36 at all. Therefore, only the supply roller 32 is driven in reverse rotation.
On the other hand, with respect to the discharge roller 36, the reverse rotation of the support shaft 741 is prevented by the action of the second one-way clutch 76b, and the sixth gear 75 that meshes with the second intermediate gear 74b is also the third intermediate gear. The rear side gear 75a meshing with 74c is also maintained in a state in which the rotation is prevented.

  In the breaking device 6 of the present embodiment, the connecting action of the motor 40, the supply roller 32, and the discharge roller 36 when the driving motor 40 rotates in the forward and reverse directions is the same as the supply of the motor 40 in the first embodiment. The operation of the roller 32 and the discharge roller 36 is exactly the same. Therefore, also in the breaking device 6 of the present embodiment in which the driving motor 40, the supply roller 32, and the discharge roller 36 are connected via the gear mechanism, the method exactly the same as the control method described in the first embodiment. Thus, the continuous sheet body 20 can be sequentially broken to the breaking position, and the continuous sheet body 20 can be broken at the broken portion to obtain a broken piece 20a.

(Modification)
The configuration of the breaking device according to the present invention is not limited to the configuration of the above embodiment.
For example, in the above-described embodiment, the supply roller 32 and the discharge roller 36 are arranged in pairs, but a plurality of pairs of supply rollers 32 can be arranged, and a plurality of pairs of discharge rollers 36 are arranged. Is also possible. By using a plurality of pairs of supply rollers 32 or discharge rollers 36, the force for clamping the continuous sheet body 20 is increased, and when the continuous sheet body 20 is broken, a sufficient tensile force is applied to ensure the continuous sheet body. 20 can be broken.

  Further, the continuous sheet body 20 to be broken in the above embodiment is of a type that is folded at the perforation, but the continuous sheet body wound in a roll shape can be broken using the same mechanism. . In the case of a continuous sheet body of a roll body, the continuous sheet body may be set and supplied on a reel. Thus, the form and supply method of a continuous sheet body, and the storage method of the broken article after a fracture | rupture can be selected suitably.

  Moreover, the material of the continuous sheet | seat body which is a process target product of a fracture | rupture apparatus, a width dimension, the arrangement | positioning space | interval of a fracture | rupture part, etc. are not specifically limited. As the continuous sheet body, in addition to continuous paper and printing paper, plastic films, plastic bag-like products, and the like can be targeted. The breaking portion provided in the continuous sheet body is not limited to the case where it is provided in the form of a perforation, but is provided with a cut according to the breaking position, and the breaking portion is made thinner than the other portions and is broken by the tensile force. The thing which provided the weak part which can be used can be used.

5, 6 Breaking device 10 Housing 12 Supply unit 14 Storage unit 20 Continuous sheet body 20a Broken product 30 Breaking mechanism 32 Supply roller 32a First supply roller 32b Second supply roller 34a First gear 34b Second gear 36 Discharge roller 36a first discharge roller 36b second discharge roller 38a third gear 38b fourth gear 39a first one-way clutch 39b second one-way clutch 40 motor 41 pulley 42 first pulley 43 second pulley 44 Belt 50, 51 Spring 60 Controller 61 First sensor 62 Second sensor 70 Gear 71a First intermediate gear 71b Second intermediate gear 72 Fifth gear 74a First intermediate gear 74b Second intermediate gear 74c Third intermediate gear 75 Sixth gear 76a First one-way clutch 76 The second one-way clutch 321,322,361,362 support shaft 323,324,363,364 roller body

Claims (8)

A driving motor;
A forward rotation direction of forwarding the continuous sheet, in the reverse rotational direction is moved in a direction returning the continuous sheet, a feed roller which is normally and reversely rotated driven by the motor,
Arranged on the downstream side of the supply roller in the forward feeding direction of the continuous sheet body, in parallel with the supply roller, with an interval at which a break portion provided in the continuous sheet body is disposed between the supply roller and the supply roller. A discharge roller that is driven to rotate forward when the motor rotates forward, and locks when the motor rotates backward ;
A first sensor which is provided at a downstream position of the discharge roller and detects whether or not the continuous sheet body exists;
A second sensor that is provided at an intermediate position between the supply roller and the discharge roller and detects whether or not the continuous sheet member exists;
A forward rotation of the motor that feeds the continuous sheet body to position the breakage part in the middle of the supply roller and the discharge roller, and a reverse rotation of only the supply roller to move the continuous sheet body at the breakage part. A control unit that switches and controls reverse rotation of the motor to be broken ;
With
The controller is
(A) The position of the front end of the continuous sheet body fed forward by the forward rotation of the motor is detected by the first sensor, and the fracture portion of the continuous sheet body is interposed between the supply roller and the discharge roller. Aligning the continuous sheet body so that
(B) After the step (a), the rotation of the motor is switched to reverse rotation, the continuous sheet body is broken at the breaking portion, and the continuous sensor is detected by the second sensor. Process,
(C) After the step (b), the rotation of the motor is switched to a normal rotation, and the broken product broken into pieces and the continuous sheet body are fed forward,
The continuous sheet body breaking device, wherein the control is repeated . A driving motor;
A forward rotation direction of forwarding the continuous sheet, in the reverse rotational direction is moved in a direction returning the continuous sheet, a feed roller which is normally and reversely rotated driven by the motor,
Arranged on the downstream side of the supply roller in the forward feeding direction of the continuous sheet body, in parallel with the supply roller, with an interval at which a break portion provided in the continuous sheet body is disposed between the supply roller and the supply roller. A discharge roller that is driven to rotate forward when the motor rotates forward, and locks when the motor rotates backward ;
A first sensor which is provided at a downstream position of the discharge roller and detects whether or not the continuous sheet body exists;
A forward rotation of the motor that feeds the continuous sheet body to position the breakage part in the middle of the supply roller and the discharge roller, and a reverse rotation of only the supply roller to move the continuous sheet body at the breakage part. A control unit that switches and controls reverse rotation of the motor to be broken ;
With
The controller is
(A) The position of the front end of the continuous sheet body fed forward by the forward rotation of the motor is detected by the first sensor, and the fracture portion of the continuous sheet body is interposed between the supply roller and the discharge roller. Aligning the continuous sheet body so that
(B) After the step (a), the rotation of the motor is switched to reverse rotation, and the continuous sheet body is broken at the breaking portion by rotating the motor reversely by a predetermined angle;
(C) After the step (b), the rotation of the motor is switched to a normal rotation, the broken product broken into pieces and the continuous sheet body are fed forward, and the continuous sheet body is moved by the first sensor. Detecting the breakage of the
The continuous sheet body breaking device, wherein the control is repeated . In the step (a), after the position of the front end of the continuous sheet body is detected by the first sensor, the motor is rotated forward by a predetermined angle to align the continuous sheet body with the breaking position. The continuous sheet body breaking device according to claim 1 or 2, characterized in that: A driving motor;
A forward rotation direction of forwarding the continuous sheet, in the reverse rotational direction is moved in a direction returning the continuous sheet, a feed roller which is normally and reversely rotated driven by the motor,
Arranged on the downstream side of the supply roller in the forward feeding direction of the continuous sheet body, in parallel with the supply roller, with an interval at which a break portion provided in the continuous sheet body is disposed between the supply roller and the supply roller. A discharge roller that is driven to rotate forward when the motor rotates forward, and locks when the motor rotates backward ;
A second sensor that is provided at an intermediate position between the supply roller and the discharge roller and detects whether or not the continuous sheet member exists;
A forward rotation of the motor that feeds the continuous sheet body to position the breakage part in the middle of the supply roller and the discharge roller, and a reverse rotation of only the supply roller to move the continuous sheet body at the breakage part. A control unit that switches and controls reverse rotation of the motor to be broken ;
With
The controller is
(A) From the time when the position of the front end of the continuous sheet body after the breakage is detected by the second sensor, the motor is rotated forward by a predetermined angle, and the continuous roller is interposed between the supply roller and the discharge roller. A step of aligning the continuous sheet body so that the fracture portion of the sheet body is located;
(B) After the step (a), the rotation of the motor is switched to reverse rotation, the continuous sheet body is broken at the breaking portion, and the continuous sensor is detected by the second sensor. Process,
(C) After the step (b), the rotation of the motor is switched to a normal rotation, and the broken product broken into pieces and the continuous sheet body are fed forward,
The continuous sheet body breaking device, wherein the control is repeated . The motor, the supply roller, and the discharge roller are connected to each other by a circulating body being wound around pulleys provided on the motor, the supply roller, and the discharge roller, respectively.
While the supply roller and the pulley are directly connected,
In the discharge roller,
A clutch mechanism that connects the motor and the discharge roller when the motor rotates forward, and releases the connection between the motor and the discharge roller when the motor rotates reversely;
The continuous sheet body breaking device according to any one of claims 1 to 4, further comprising a lock mechanism that prevents the discharge roller from rotating in reverse when the motor rotates in reverse. . The motor and the supply roller are linked via a first gear mechanism, the motor and the discharge roller are linked via a second gear mechanism,
In the second gear mechanism,
A clutch mechanism that connects the motor and the discharge roller when the motor rotates forward, and releases the connection between the motor and the discharge roller when the motor rotates reversely;
The continuous sheet body breaking device according to any one of claims 1 to 4, further comprising a lock mechanism that prevents the discharge roller from rotating in reverse when the motor rotates in reverse. . The clutch mechanism transmits the driving force of the motor directly connected to the discharge roller when the motor rotates in the forward direction, and releases the discharge roller from the driving force of the motor when the motor rotates in the reverse direction. A first one-way clutch that allows the discharge roller to reversely rotate,
6. The continuous sheet body breaking device according to claim 5 , wherein the lock mechanism includes a second one-way clutch that prevents reverse rotation of the discharge roller when the motor rotates reversely. The discharge roller includes a first discharge roller and a second discharge roller that clamp the continuous sheet member in a thickness direction,
The pulley is provided on the second discharge roller that contacts the lower surface of the continuous sheet body,
The continuous sheet body breaking device according to claim 7, wherein the first one-way clutch and the second one-way clutch are provided on the second discharge roller.

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