JP6109742B2 - Label generating apparatus and label mounting apparatus equipped with the label generating apparatus - Google Patents

Description

  The present invention intermittently conveys a strip-shaped label base material, which has been repeatedly printed at the same pitch (characters, designs, etc.) in the longitudinal direction to the label base material cutting position, and cuts the label base material with a rotary blade The present invention relates to a label generation apparatus that generates a label by doing so and a label mounting apparatus including the label generation apparatus.

  Conventionally, a label base material obtained by folding a cylindrical stretch film, which has been repeatedly printed in the longitudinal direction at a predetermined pitch (characters, designs, etc.) into a strip shape, is intermittently conveyed to a label base material cutting position, and a rotary blade is used. There is known a label generating apparatus that separates a label from a label substrate by a method of moving the label substrate in a lateral direction.

  For example, in Japanese Patent No. 2756524, a label base material is intermittently conveyed in a vertical direction to a label base material cutting position, and revolved across the label base material cutting position while rotating a round blade rotary cutter. Thus, there has been proposed a label generating apparatus that cuts a label base material in a horizontal direction with a rotary cutter.

  FIG. 16 is a diagram showing a basic configuration of the label substrate cutting method proposed in the above-mentioned publication, and is a view of a rotary cutter portion as viewed from above. Moreover, FIG. 17 is the figure which looked at the part of the rotary cutter from the side.

The rotary cutter 100 is rotatably attached to the tip of an arm 101 having a predetermined length R [mm] that is rotatably supported by a vertical support shaft 102. A rotational force is transmitted to each of the rotary cutter 100 and the arm 101, the arm 101 rotates clockwise around the support shaft 102, and the rotary cutter 100 is faster than the rotation speed of the arm 101 around the support shaft 103. To rotate clockwise. Accordingly, the rotary cutter 100 revolves clockwise around the support shaft 102 while rotating along a circular orbit having a radius R in the clockwise direction.

A label base material cutting position K for cutting the strip-shaped label base material 104 is provided in a part of the revolution path Q of the rotary cutter 100. The cut positions C (see FIG. 17) provided between the labels of the strip-shaped label base material 104 are intermittently conveyed from the upper side to the lower side with respect to the revolution surface of the rotary cutter 100. The position in the S direction in FIG. 16 is a position where the rotary cutter 100 starts cutting the label base material 104 set at the label base material cutting position K, and the position in the E direction is a position where the rotary cutter 100 has the label base material 104. This is the position where the cutting of is finished. Therefore, the section S _c of narrow angle theta [rad] sandwiched by S direction and the E direction of the revolving path corresponds to the label base material cutting section rotary cutter 100 cuts the label substrate 104, the remaining revolving path angle (2π-θ) section S _t of [rad] is equivalent to the label base material conveying section for conveying the cut position C of the label substrate 104 to the label base material cutting position K.

Since the conventional label producing apparatus controls the revolution speed v _r [mm / sec] of the rotary cutter 100 at a constant speed, the rotary cutter in the revolution period (period) T _r = 2πR / v _r (R [mm] is the revolution radius). 100 ratio _r = T _c / T r of the label base material cutting period T _c for cutting the label substrate 104 is constant. That is, _{T c = R · θ / v} r from r = (R · θ / v r) × (v r / 2πR) = θ / 2π.

Since the revolution period T _r becomes longer in response to the revolution speed v _r of the rotary cutter 100 is lowered, as shown in FIG. 18, lowering the revolution speed v _r of the rotary cutter 100, the label base material cutting period T _c it is long (see FIG. 18 (a)), the faster the revolving speed v _r of the rotary cutter 100, the label base material cutting period T _c becomes shorter (see FIG. 18 (b)).

Japanese Patent No. 2756524

Since the label substrate 104 using a stretch film have a stretch, the cutting speed in the process of cutting the label substrate 104 by a rotary cutter 100 in the lateral direction, i.e., the revolution speed v _r of the rotary cutter 100 is too low In some cases, the label substrate 104 cannot be cut reliably. In particular, the label base material 104 is likely to occur in, for example, a stretch film having a high expansion / contraction rate with an elastic deformation rate of about 40% to 50%. Therefore, the revolution speed v _r of the rotary cutter 100, it is necessary to control more than cut minimum speed v _s which can reliably cut the label substrate 104.

  The label generating apparatus is applied to, for example, a label mounting apparatus that is mounted so as to cover a bottle body with a cylindrical label. The label mounting device is a folded cylindrical label generated by the label generating device for each bottle at a predetermined label receiving position on the transport path while transporting a large number of bottles arranged in a line at a predetermined interval. The bottle label is opened while each bottle is transported to the label mounting position downstream of the label receiving position on the transport path, and the label opened when each bottle passes the label mounting position. Put it on each bottle. Therefore, the drive system of the label generating apparatus is mechanically connected to the drive system of the label mounting apparatus, and the label generating operation of the label generating apparatus is controlled to be synchronized with the label mounting operation of the label mounting apparatus.

  In the label mounting apparatus, the label mounting speed (bottle transport speed) is switched stepwise in accordance with the label mounting processing status. For example, the label mounting device can be set at three speeds, a high speed and a low speed, with respect to the standard speed. When the label mounting device starts the label mounting process, the label mounting speed is adjusted according to the fluctuation of the bottle supply amount. The bottle mounting process is performed while automatically switching to an appropriate speed.

Thus, the label production rate of stamp generator, i.e., the revolution speed v _r of the rotary cutter 100 is varied according to changes in the label mounting speed of the label mounting apparatus, when the label attached speed of the label attaching device is controlled to a low speed The revolution speed v _r of the rotary cutter 100 is also controlled to a low speed. Therefore, in the conventional label generation method, the label attaching device is revolving speed v _r of the rotary cutter 100 when it becomes low speed operation becomes lower than the cutting minimum speed v _s, may not be reliably cut the label substrate 104 There is a problem that arises.

Also, if the defective cutting of the label substrate 104 is caused to stop the operation of the label mounting apparatus, it is necessary to adjust the revolution speed v _r of the rotary cutter 100, this adjustment adjusts the drive system of the label producing apparatus There is also a disadvantage that the adjustment work is not easy.

The label generating apparatus transports the label base material 104 by the cut length _Dc (interval of the cut position C) during the label base material transport period T _t (= T _r −T _c ), and the next cut position C is the label base material. Set to cutting position K. If the label substrate 104 is set in the label generation apparatus is changed to a long type of cut length D _c, the conveying speed of the label substrate 104 definitive stamp generator is given the same as before the label substrate 104 The time for transporting the cut position C of the label base material 104 to the label base material cutting position K becomes longer.

When the label attached speed of the label mounting device is controlled at high speed revolution speed v _r of the rotary cutter 100 is controlled at a high speed, the label base convey time T _t from when the revolving speed v _r of the rotary cutter 100 is a standard speed Is also shortened. Since the intermittent conveyance of the label base material 104 is also controlled so as to be synchronized with the label mounting operation of the label mounting device, in the case of the label base material 104 having a long cut length _Dc , the label base material 104 within the label base material transport period T _t There may be a case where the cut position C of the material 104 cannot be conveyed to the label base material cutting position K.

For this reason, in order to ensure that the cut position C of the label base material 104 can be transported to the label base material cutting position K within the label base material transport period T _t even when the label mounting apparatus is operating at high speed, the label base material 104 of it the transport speed needs to be adjusted, this adjustment since carried out by adjusting the revolution speed v _r of the rotary cutter 100, also facilitates the adjustment work when a long label substrate 104 having a cut length D _c is set The problem that it is not possible arises.

As described above, the conventional label generation device, that the drive system for revolving the rotary cutter 100 is mechanically coupled to the drive system of the label attaching device, easy to adjust the revolution speed v _r of the rotary cutter 100 There is a problem that you can not. In particular, the revolution speed for the revolution speed v _r of the rotary cutter 100 is the same for label base material conveying section S _t and the label base material cutting section S _c, the label substrate transporting section S _t and the label base material cutting section S _c It can not be flexibly adjusted time T _t for v by changing _r to convey the velocity v _c and the cutting position C of the label substrate 104 for cutting the label substrate 104 to the label base material cutting position K There is an inconvenience.

  The present invention provides a label generating device and a label generating device that can change the revolution speed of a rotary cutter in a label base material conveyance section and a label base material cutting section, and can reliably perform intermittent feeding and cutting of the label base material. An object of the present invention is to provide a label mounting apparatus provided.

The label generating apparatus provided by the present invention intermittently conveys a strip-shaped label base material that has been repeatedly printed at a predetermined pitch in the longitudinal direction, and the leading cut position in the label base material is determined as the label base material. A label base material transporting means for setting at a cutting position, and revolving while rotating the cutting means within a plane perpendicular to the transport direction of the label base material at the label base material cutting position; A label base material cutting means for moving the cutting means laterally relative to the label base material set at the base material cutting position to separate the leading label from the label base material; and a revolution cycle of the cutting means is predetermined. A revolution speed control means for controlling the revolution speed of the cutting means so as to synchronize with the period of the revolution, the revolution speed control means changes the revolution period. The first revolving speed of the cutting means and the cutting means in the first revolving section in which the cutting means moves to cut the label base material on the revolving track of the cutting means. The second revolution speed of the cutting means in the second revolution section where the material is not cut is different from each other, and the first period and the second revolution section corresponding to the first revolution section within the revolution period The ratio of rotation to the second period corresponding to is changed, and the direction of rotation of the cutting means is opposite to the direction of revolution (claim 1).

  In the above label generating apparatus, the revolution speed control means has a speed higher than the revolution speed with respect to the revolution speed when the cutting means is caused to revolve on the revolution track at a constant speed. And the second revolution speed may be controlled to be lower than the revolution speed (claim 2).

  Further, in the label generating apparatus, the revolution speed control means sets the first revolution speed when the revolution speed is lower than a predetermined speed at which the label base material can be reliably cut. It is good to control to the said predetermined speed, and to control the said 2nd revolution speed to the speed lower than the said revolution speed calculated by a predetermined | prescribed arithmetic expression using the said predetermined speed and the said revolution speed (Claim 3). .

  Further, in the label generating apparatus, the revolution speed control means includes the label base material transport means within the second period when the cutting means revolves the second revolution section at the revolution speed. When the label substrate cannot be intermittently conveyed, the first revolution speed is controlled to a predetermined speed higher than the revolution speed, and the second revolution speed is set using the predetermined speed and the revolution speed. It is preferable that the speed is controlled to be lower than the revolution speed calculated by a predetermined arithmetic expression.

  In the label generating apparatus, the label base material may be formed by folding a cylindrical stretch film into a band shape (Claim 5).

  The label mounting apparatus provided by the present invention includes the label generation apparatus, a bottle supply unit that supplies a large number of bottles at predetermined intervals, and each bottle supplied by the bottle supply unit moves at a predetermined conveyance speed. And label mounting means for mounting each label generated by the label generating device on each bottle.

  In the label mounting apparatus, the bottle transport speed by the label mounting means can be switched in multiple stages, and the predetermined period for synchronizing the revolution period of the cutting means is switched by the label mounting means. The label mounting cycle may be based on the bottle conveyance speed (Claim 7).

According to the present invention, the first revolution speed and cutting of the cutting means in the first revolution section in which the cutting means moves to cut the label base material on the revolution track of the cutting means without changing the revolution period. The first period and the second revolution section corresponding to the first revolution section in the revolution cycle are made different from each other in the second revolution speed of the cutting means in the second revolution section in which the means does not cut the label substrate. since changing the ratio of the second time period corresponding to, for example, a predetermined cycle for synchronizing the orbital period T _r becomes longer, the first revolving speed v _c of the first revolving interval ensures label substrate minimum revolution speed required for cutting when it is necessary to lower than (cut minimum speed) v _s, while setting the first revolution speed to the cutting minimum speed v _s, the second revolving section lower than cutting the minimum speed v _s a second revolution speed By setting a predetermined speed v _t have, it is possible to reliably cut the label substrate.

Further, it is difficult to intermittently feed the label base material during the second period in which the label base material having a long cut position interval is set and the cutting means revolves around the second revolution section at the transport speed by the label base material transport means. The first revolution speed is set to a predetermined speed v _r higher than the revolution speed v _co required to synchronize the revolution period T _r with the predetermined period, while the second revolution interval second By setting the revolution speed to a predetermined speed v _t lower than the revolution speed v _co , the second period T _t within the revolution period T _r becomes longer, and the label substrate can be reliably intermittently fed.

It is a top view which shows the label mounting apparatus provided with the label production | generation apparatus based on this invention. It is a front view of the label mounting apparatus. It is a figure for demonstrating a series of label mounting operation | movement which mounts the label in the bottle in the label mounting apparatus. It is a figure which shows the structure of a label base material. It is the figure which looked at the label production | generation apparatus based on this invention from the top. It is the figure which looked at the label production | generation apparatus from the right side surface side. It is the figure which looked at the label production | generation apparatus from the back. It is the figure which looked at the label production | generation apparatus from the front. It is the figure which looked at the lower side from the XX line of FIG. It is the figure which looked at the lower side from the YY line of FIG. It is the figure which looked at the right side surface from the ZZ line of FIG. It is a block diagram which shows the electrical structure of the label production | generation apparatus. It is a figure for explaining the contents of the speed control for securing the minimum speed that can cut the label base material when the cutting speed of the label base material by the rotary blade becomes low speed in conjunction with the low speed operation of the label mounting device. is there. It is a figure for demonstrating the control content of the revolution speed of a rotary blade in order to ensure a label base material conveyance period, when a label base material with a long cut length is set. It is a flowchart which shows the control operation | movement of the revolution speed of the rotary blade in a label production | generation apparatus. It is a figure which shows the basic composition of the cutting method of the conventional label base material, and is the figure which looked at the part of the rotary cutter from the top. It is a figure which shows the basic composition of the cutting method of the conventional label base material, and is the figure which looked at the part of the rotary cutter from the side. It is a figure which shows the relationship between the revolution speed of a rotary cutter, label base material cutting time, and label base material conveyance time.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a top view showing a label mounting apparatus provided with a label generating apparatus according to the present invention, and FIG. 2 is a front view of the label mounting apparatus. FIG. 3 is a diagram for explaining a series of label mounting operations for mounting a label on a bottle in the label mounting apparatus.

  The label mounting apparatus 1 includes a bottle supply unit 2, a label supply unit 3, a label delivery unit 4, a rotary type label mounting unit 5, and a bottle carry-out unit 6. In FIG. 1, when viewed with reference to the label mounting unit 5, the bottle supply unit 2 is disposed on the right side in front of the label mounting unit 5 in a front view (a direction in which the upper side is viewed from the lower side in FIG. 1). It is arranged on the front left side of the label mounting part 5. Further, the label supply unit 3 is disposed on the left side of the label mounting unit 5.

  The bottle supply unit 2 continuously attaches a number of bottle-type containers B (hereinafter referred to as “bottle B”) made of a synthetic resin such as PET (polyethylene terephthalate) to which labels are to be attached, at predetermined intervals. The function to supply to. The bottle supply unit 2 includes a belt conveyor 21, a screw and a star wheel 22 (not shown). The belt conveyor 21 arranges many bottles B in a line and conveys them to the label mounting unit 5 side. The screw adjusts the interval between the bottles B conveyed by the belt conveyor 21 to a predetermined interval. The star wheel 22 conveys each bottle B conveyed by the screw to the bottle supply position γ in synchronization with the receiving timing of the label mounting unit 5 and delivers it to the label mounting unit 5.

  The bottle carry-out unit 6 includes a belt conveyor 61 and a star wheel 62. The bottle unloading 6 carries out a transport operation opposite to that of the bottle supply unit 2 and unloads the bottle B (labeled bottle B) with the label L mounted from the label mounting unit 5. That is, the star wheel 62 receives the bottle B with a label in synchronization with the delivery timing of the label mounting unit 5 at the bottle carry-out position δ, and conveys it to the belt conveyor 61. The belt conveyor 21 conveys each labeled bottle B conveyed from the star wheel 62 to a subsequent process.

  The label supply unit 3 is a label base material LS obtained by folding a cylindrical stretch film made of a polyethylene-based resin or the like that has been repeatedly subjected to the same printing (characters, designs, etc.) at a predetermined pitch in the longitudinal direction (see FIG. 4). Is intermittently transported to a label base material cutting position K (see FIG. 6), and a number of labels L are continuously delivered at a predetermined pitch by cutting a cut position C provided on the label base material LS. The function to supply to 4 is performed. The label supply unit 3 is provided with a label generation device 7 according to the present invention. A specific configuration of the label generation device 7 will be described later.

As shown in FIG. 4, the label substrate LS is provided with a cut position C during the same printing repeated at a predetermined pitch, and a rectangular mark M is provided on the rear side along the cut line of each cut position C. It has been. The distance D _c between the cut positions C is a dimension at which the label supply unit 3 cuts the label base material LS (hereinafter referred to as “cut length D _c ”).

  The label delivery unit 4 receives each label L generated by the label supply unit 3 at the first label delivery position α of the label supply unit 3 and conveys the label L to the second label delivery position β of the label mounting unit 5. It fulfills the function of passing to the mounting part 5. The label delivery unit 4 includes a plurality of take-up members 42 that project radially from the rotating shaft 41. The take-up member 42 receives the label L fed in the vertical direction from the label supply unit 3 at the first label delivery position α by moving it in the horizontal direction (horizontal direction), holds it by suction, and holds it by the second label delivery position. Transport to β.

The label substrate LS is a highly stretchable film, for example, a film having a thickness of 20 μm to 80 μm made of a highly stretchable polyethylene resin material having an elastic deformation rate of about 40% to 50%. Here, the elastic deformation rate of 40% to 50% means that the instantaneous strain after elongation of 40% to 50% is 10.5% or less, and the high stretchability is the tension when stretched by 60%. It is a property that it is easy to stretch such that the stress is 7.7 N / mm ² or less.

  The label mounting unit 5 receives a number of bottles B supplied from the bottle supply unit 2 at predetermined intervals at the bottle supply position γ, and is supplied from the label supply unit 3 while transporting each bottle B on a predetermined circular path. It performs the function of attaching each label L. The bottle carry-out unit 6 performs a function of receiving the bottle B (the bottle B with a label) on which the label L is attached by the label attachment unit 5 at the bottle carry-out position δ and carrying it out to the subsequent process.

  The label mounting unit 5 includes an annular support plate 52 (see FIG. 2) that rotates counterclockwise around the main shaft 51. The support plate 52 is provided with bottle holding portions 521 that hold 24 bottles B along the periphery at regular intervals. Further, the folded label L supplied from the label supply unit 3 via the label delivery unit 4 is received at the upper part of each bottle holding unit 521, and the label L is opened in a cylindrical shape and held in each bottle holding unit 521. A label mounting head 53 (see FIG. 2) to be mounted on the bottle B is provided.

  In FIG. 1, assuming that the reference position N is an angle counterclockwise from the center of the main shaft 51, a bottle supply position γ is provided at a position approximately 20 ° from the reference position N, and from the bottle supply position γ. A second label delivery position β is provided at a position rotated by 240 °, and a bottle unloading position δ is provided at a position rotated about 90 ° from the second label delivery position β.

  As will be described later, the label mounting unit 5 is raised while the bottle B received at the bottle supply position γ is transported to the label delivery position β, and the bottle pulling upper portion 533 provided in the label mounting head 53 (FIG. 2). 2), the bottle unloading position δ in the height direction is higher than the height position at which the support plate 52 is provided, as shown in FIG. In the position.

  Each bottle holding unit 521 of the support board 52 is provided with a bottle guide 521a (see FIG. 3) for receiving the bottle B from the bottle supply unit 2 in a standing state and holding the state. The bottle guide 521a includes a pair of guide members that can be opened and closed. The bottle guide 521a opens the guide member at the timing when the bottle B is delivered from the bottle supply unit 2 at the bottle supply position γ, and closes the guide member at the timing when the bottle B is received. The opening / closing operation of the guide member is performed by an opening / closing mechanism including a cam groove and a cam follower (not shown).

  The bottle mounting table 521b of each bottle holding unit 521 is provided with a bottle lifting mechanism 522 (see FIG. 3) that lifts the bottle B mounted on the bottle mounting table 521b. The bottle elevating mechanism 522 is configured by a rod-like elevating rod 522a (see FIG. 3) provided in the center of the bottle mounting table 521b so as to be movable up and down, and a cam mechanism for moving the elevating rod 522a up and down. The cam mechanism is provided at the lower end of a cylindrical cam plate 54 (see FIG. 2) in which a cam groove is formed and an elevating rod 522a, and a cam follower 522b (see FIG. 3) fitted in the cam groove of the cam plate 54. Consists of.

  A line (c) in FIG. 3 is a movement locus in which the cam follower 522 b is guided by the cam groove of the cam plate 54 when the bottle mounting table 521 b rotates counterclockwise around the main shaft 51. As shown in the figure, since the cam follower 522b moves up and down only once by the cam groove of the cam plate 54 while moving from the bottle supply position γ to the label delivery position β, the cam follower 522b moves upward. Thus, the bottle B placed on the bottle placing table 521b is lifted.

  A number of label mounting heads 53 are attached at regular intervals on a concentric circle with the main shaft 51 as the center. As shown in FIG. 2, the label mounting head 53 includes a label receiving portion 531, a label expanding portion 532, and a bottle holding portion 533. The label receiving unit 531 performs a function of receiving and opening the cylindrical label L folded from the label delivery unit 4 at the second label delivery position β. The label expanding portion 532 has a function of further pushing the opening portion of the label L opened by the label receiving portion 531 so that the body portion of the bottle B raised by the bottle lifting mechanism 522 can pass through the opening portion of the label L. Do. The bottle holding part 533 performs a function of holding the neck part and the body part of the bottle B that has entered the body part into the opening part of the label L, lifting it from the bottle holding part 521 and transporting it to the bottle unloading position δ.

  The label receiving portion 531 adsorbs the label L to the clamp member, a pair of clamp members 531a (see FIG. 3) that can open and close to receive the label L, an opening / closing drive member (not shown) that causes the clamp member to perform an opening / closing operation. A suction member (not shown). The label receiving portion 531 moves to the second label delivery position β with the pair of clamp members 531a opened, and the one clamp member 531a intersects with the take-up member 42 of the label delivery portion 4 so that the take-up is performed. The label L held by the member 42 is received. When receiving the label L, the label receiving unit 531 once closes the clamp member 531a, sucks both the front and back surfaces of the label L with the suction member with the suction member, and then opens the folded label L by the opening operation. (See FIGS. 3B, 3C, and 3D).

  The label expanding portion 532 is rotatably supported by a base member 532a (see FIG. 3) composed of an annular disk and a cylindrical body attached to the lower end of the disk, and an inner diameter portion of the cylindrical body. An annular cam member (not shown) in which a plurality of cam grooves extending in the circumferential direction from the inner diameter side toward the outer diameter side is formed, and a disk is supported so as to be movable in the radial direction, and an expansion claw 532b ( 3) has a slide member (not shown) attached vertically, and a cam follower (not shown) fitted in a cam groove of the cam member attached to the slide member. The slide member of the label expanding portion 532 is moved inward and backward by rotating the cam member by a cam mechanism (not shown), whereby the expanding claw 532b opens and closes.

  The label expanding portion 532 is supported by a column vertically attached to the disk 53a so as to be movable up and down. A cam follower 532c (see FIG. 2) is attached to the cylindrical body of the label expanding portion 532, and the cam follower 532c is in contact with the cam surface of the cam member 56 disposed in an annular shape. When the main shaft 51 rotates, the label mounting head 53 moves along the periphery of the support plate 52, and accordingly, the label expanding portion 532 also moves along the periphery of the support plate 52.

  Due to the movement of the label expanding portion 532, the cam follower 532c moves along the cam surface of the cam member 56, whereby the position of the label expanding portion 532 in the height direction moves up and down. That is, as shown in FIG. 3, the label expanding unit 532 is configured such that the label receiving unit 531 of the label mounting unit 53 receives the label L from the label transferring unit 4 at the second label transfer position β, and the label L is cylindrical. In the period until it is opened (see FIGS. 3 (j) to 3 (m)), the lowest position is moved and starts to rise at the timing when the opening of the label L is completed, and the expanding claw 532b is within the opening of the label L. It rises to the highest position to enter (see FIG. 3 (o)). After the label expanding portion 532 rises to the highest position, the label expanding portion 532 opens the opening claw 532b, further widens the opening of the label L, and waits until the bottle B rises (FIG. 3A to FIG. 3). (See (g)).

  The bottle holding upper portion 533 includes a pair of swing arms 533b supported to be openable and closable in a horizontal plane at the lower end of a support member 533a bent in an L shape (see FIG. 2), and a tip of each swing arm 533b. A pair of grippers 533c mounted vertically, a pair of neck clampers 533d mounted at an intermediate position inside each gripper 533c, a lifting mechanism for moving up and down the pair of swing arms 533b, and a pair of swing arms 533b An opening / closing mechanism for opening and closing is provided.

  The lifting mechanism of the swing arm 533b is configured by a cam mechanism that moves the support member 533a up and down. The cam mechanism is provided at the base end of the cylindrical cam plate 55 (see FIG. 2) in which the cam groove is formed and the support member 533a, and is formed on the cam groove (lower side in FIG. 2). Cam follower 533e fitted in the cam groove). The swing arm 533b is provided with a slide guide (not shown), and when the swing arm 533b is moved up and down, the slide guide follows a guide rail (not shown) attached to the support board 52 vertically. To move.

  A line (B) in FIG. 3 is a movement locus in which the cam follower 533 e is guided by the cam groove of the cam plate 55 when the label mounting head 53 rotates counterclockwise around the main shaft 51. As shown in the figure, since the cam follower 533e moves up and down only once by the cam groove of the cam plate 55 while moving from the bottle supply position γ to the label delivery position β, the cam follower 533e is lowered. As a result, the gripper 533c is pushed down to the ascending position of the bottle B raised by the bottle elevating mechanism 522.

  The opening / closing mechanism of the swing arm 533b includes a spring (not shown) that normally biases both the swing arms 533b in the opening direction, and a roller pair (not shown) provided at the base end of the both swing arms 533b. It is comprised with the cam member inserted between both rollers. The cam member is attached to the lower end of an elevating rod 533g bent in an L shape and supported by the support member 533a so as to move up and down, and the elevating rod 533g is moved up and down by a cam mechanism. The cam mechanism of the lifting rod 533g is provided at the cam groove of the cam plate 55 (the cam groove formed on the lower side in FIG. 2) and the proximal end of the lifting rod 533g, and is a cam follower 533f fitted in the cam groove of the cam plate 55. Consists of. Note that a slide guide (not shown) is also provided on the lifting rod 533g, and when the lifting rod 533g is moved up and down, the slide guide moves along a guide rail (not shown) vertically attached to the support board 52. It is supposed to be.

  3 is a movement locus in which the cam follower 533f is guided by the cam groove of the cam plate 55 when the label mounting head 53 rotates counterclockwise around the main shaft 51. As shown in the figure, the movement locus of the cam follower 533f is parallel to the movement locus of the cam follower 533e, and is moved downward by the cam groove of the cam plate 55 while moving from the bottle supply position γ to the label delivery position β. Move only once. When the cam follower 533f is lowered, the cam member at the distal end is inserted into the roller pair provided at the base end portion of the pair of swing arms 533b and the biasing force of the spring is weakened, so that the pair of swing arms 533b is closed. Do. That is, the gripper 533c and the neck clamper 533d operate so as to be close to each other.

  At the timing when the pair of swing arms 533b is closed, the bottle B is raised to the lifted position by the bottle lifting mechanism 522. Therefore, the neck clamper 533d closes the neck of the bottle B by the close operation of the pair of swing arms 533b. The gripper 533c clamps the body portion of the bottle B together with the label L (see FIGS. 3E and 3F).

  After that, the pair of swing arms 533b is kept closed and raised to the original ascending position by the elevating mechanism, so that the labeled bottle B is transported to the bottle unloading position δ at the ascending position ((( g) to (p)).

  Referring briefly to FIG. 3, the sequence of attaching the label L to the bottle B in the label attaching unit 5 will be briefly described. The label attaching head 53 of the label attaching unit 5 performs the following operations (1) to (7) for each label. L and each bottle B are continuously performed.

(1) At the second label delivery unit β, the label receiving unit 531 receives the label L from the label delivery unit 4 (FIG. 3 (j)).

(2) While the received label L is moved from the second label delivery unit β to the bottle supply position γ, the folded label L is preliminarily opened in a cylindrical shape by the label receiving unit 531 (FIG. 3 ( j) to (m)), after the label expanding portion 532 is raised at the timing when the label L opens, and the expanding claw 532b of the label expanding portion 532 is inserted into the opening of the label L (FIG. 3 (n)). -(P)), the expansion nail | claw 532b is opened and the opening of the label L is expanded to the magnitude | size in which the bottle B can be inserted (FIG. 3 (a)).

(3) When the bottle supply position γ is reached, the bottle holding unit 521 receives the bottle B conveyed by the star wheel 22 of the bottle supply unit 2, and the lower position of the label L where the opening is expanded by the label expansion unit 532 Is set with a bottle B to which the label L is attached (FIG. 3A).

(4) When the bottle holding unit 521 receives the bottle B, the bottle lifting mechanism 522 raises the bottle B while the bottle B is conveyed to a position approximately halfway between the bottle supply position γ and the second label delivery position β. The elevating mechanism of the bottle holding portion 533 lowers the bottle holding portion 533 (FIGS. 3A to 3F).

(5) When the bottle lifting mechanism 522 raises the bottle B, the bottle B fits into the opening of the label L where the label expanding portion 532 is expanded from the lower side, and the label L contacts the trunk portion. Then, the label L rises with the bottle B by the frictional force. At the timing when the bottle B rises to the uppermost position, the bottle holding upper portion 533 is lowered to the lowermost position, the tip portions of the pair of grippers 533c sandwich the bottle B with the label L attached thereto, and the pair of neck clampers 533d pinches the neck of the bottle B (FIGS. 3E and 3F).

(6) The bottle B that has been raised to the uppermost position is immediately lowered to the original lowest position, and the bottle holding portion 533 that has been lowered to the lowest position is immediately raised to the original highest position. After the bottle B with L attached is lifted to the uppermost position by the bottle holder 533, the uppermost position is held and conveyed to the label carrying-out position δ (FIGS. 3 (f) to (p)).

(7) The bottle B with a label transported to the label unloading position δ by the bottle holding upper portion 533 is transferred to the star wheel 62 of the bottle unloading section 6 and unloaded to the subsequent process by the star wheel 62 and the belt conveyor 61 (FIG. 3). (P)).

  3 (j) to 3 (p), the operation of receiving the label L from the label delivery unit 4 and the operation of transporting the bottle B with the label by the bottle holding portion 533 are depicted redundantly. This is because the above-described operations (1) to (7) are continuously performed.

  Next, the label production | generation apparatus 7 based on this invention provided in the label supply part 3 is demonstrated.

  5 is a diagram of the label generation device 7 as viewed from above, FIG. 6 is a diagram of the label generation device 7 as viewed from the right side, and FIG. 7 is a diagram of the label generation device 7 as viewed from the back side. 8 is a view of the label generation device 7 as viewed from the front side, FIG. 9 is a view of the label generation device 7 as viewed from the XX line in FIG. 8, and FIG. 10 is from the YY line in FIG. FIG. 11 is a diagram viewed from the lower side, and FIG. 11 is a diagram viewed from the ZZ line in FIG.

  The label generation device 7 intermittently conveys the label base material cutting unit 71 that cuts the label base material LS in the horizontal direction with the rotary blade 711 and the cut positions C of the label base material LS to the label base material cutting position K. A label base material transport unit 72. Although the label production | generation apparatus 7 is provided with the label conveyance part which conveys the label L cut | disconnected from the label base material LS by the label base material cutting part 72 to the label delivery part 4, the label conveyance part is abbreviate | omitted in FIG. .

The label base material cutting part 71 has a rotary blade 711 that revolves while rotating on a circumference of a predetermined distance R (see FIG. 5) from the central axis in the vertical direction, and the rotary blade 711 is a predetermined trajectory of the revolution track. When moving the range (the range sandwiched between the direction of the position S and the direction of the position E in FIG. 5; this range is referred to as “label base material cutting section S _c ”), the label base LS intersects with the label base LS. The material LS is cut in the lateral direction. Therefore, as shown in FIG. 6, the label base material cutting position K is provided at the height position of the plane on which the rotary blade 711 of the label base material cutting portion 71 revolves.

  The rotary blade 711 is rotatably attached to one end of a plate-like arm 712C that is fixed at an intermediate position of a support shaft 712B that is rotatably arranged on the base board 712A. The radius of the rotary blade 711 is about 2/3 of the revolution radius. The rotary blade 711 is fixed to the lower end of a rotary shaft 711a that is rotatably attached to the arm 712C. A dummy rotary blade 711 ′ is attached at a symmetrical position with respect to the rotary blade 711 on the other end of the arm 712 </ b> C. The rotary blade 711 ′ functions as a balancer for suppressing swinging in the revolution operation of the rotary blade 711.

  A pulley 715 for transmitting the rotational force of the motor 713 for revolving the rotary blade 711 is fixed to the lower end of the support shaft 712B. The motor 713 is disposed at a predetermined position closer to the back side than the support shaft 712B of the base board 712A. A timing belt 716 is bridged between the rotor 713a of the motor 713 and the pulley 715. The motor 713 is a motor whose speed is controlled by a servo mechanism.

  When the label generating device 7 is operated, the motor 713 rotates counterclockwise (in the direction of the arrow r1) in FIG. 5 at a predetermined speed corresponding to the label mounting speed of the label mounting device. The rotational force of the motor 713 is transmitted to the support shaft 712B by the timing belt 716, and the support shaft 712B rotates counterclockwise. The rotation of the support shaft 712B causes the arm 712C to rotate counterclockwise, and the rotary blade 711 attached to the tip of the arm 712C revolves counterclockwise on a circular path at a distance R from the support shaft 712B.

  A rotational force relay member 717 for relaying the rotational force of the motor 714 for rotating the rotary blade 711 to the rotary blade 711 is rotatably provided above the arm 712C of the support shaft 712B. The motor 714 is disposed at a predetermined position closer to the left side than the support shaft 712B of the rectangular support plate 712D fixed at a position above the rotational force relay member 717 of the frame of the label generating device 7. A belt 718A is bridged between the rotor 714a of the motor 714 and the upper portion of the rotational force relay member 717 (FIGS. 5 and 6). On the other hand, a belt 718B is stretched between the lower part of the rotational force relay member 717 and the upper part of the rotary shaft 711a that supports the rotary blade 711 (FIGS. 5 and 6). The motor 714 is a motor whose speed is controlled by a servo mechanism.

  When the label generating device 7 is operated, the motor 714 rotates clockwise (in the direction of the arrow r2) at a predetermined speed in FIG. The rotational force of the motor 714 is transmitted to the rotational force relay member 717 by the belt 718A, and further transmitted to the rotational shaft 711a by the belt 718B. Thereby, the rotating shaft 711a rotates clockwise, and the rotating blade 711 fixed to the lower end of the rotating shaft 711a rotates clockwise (in the direction of the arrow r3).

When the rotary blade 711 of the label base material cutting unit 71 cuts the label base material LS, the label base material transport unit 72 is configured to rotate the rotary blade 711 counterclockwise from the position E to the position S of the revolving track (hereinafter referred to as “ _St” ). , “Label substrate conveyance section”) during a period T _t (hereinafter referred to as “label substrate conveyance period”), the label substrate LS is conveyed vertically from top to bottom, and the label substrate LS is conveyed. The next cut position C is conveyed to the label base material cutting position K. The label base material transport unit 72 has a first roller pair 721 and a second roller pair 722 at upper and lower positions sandwiching the label base material cutting position K, respectively, and further includes a first roller pair 721 (hereinafter referred to as “upper stage”). The third roller pair 723 is provided at a predetermined position above the roller pair 721 "). In addition, a mark sensor 724 that detects a mark M provided in each label L of the label base LS is provided at a predetermined position (substantially intermediate position) between the upper roller pair 721 and the third roller pair 723.

  The label cutting position K is located at the center of the interval between the upper roller pair 721 and the second roller pair 722 (hereinafter referred to as “lower roller pair 722”). Between the upper roller pair 721 and the lower roller pair 722, a protective member 725 for guiding and protecting the rotary blade 711 when the rotary blade 711 cuts the label base LS is detachably mounted. . A groove 725a into which the rotary blade 711 is fitted is provided on a side surface of the protective member 725 facing the rotary blade 711 (see FIG. 11).

  The lower roller pair 722 applies a constant tension to the label base material LS in cooperation with the upper roller pair 721 while the rotary blade 711 crosses the label base material LS, and the label L at the leading end is separated from the label base material LS. When this is done, the label L is transported downstream. The third roller pair 723 and the upper roller pair 721 start the conveyance of the label substrate LS with a slight delay after the lower roller pair 722 starts conveying the label L, and the leading end of the label substrate LS is the lower roller When the pair 722 is nipped, the function of conveying the next cut position C of the label substrate LS to the label substrate cutting position K in cooperation with the lower roller pair 722 is achieved.

  Control of the transport amount of the label base material LS by the upper roller pair 721, the lower roller pair 722, and the third roller pair 723, that is, control for stopping the transport of the label base material LS by the roller pairs 721, 722, 723 is as follows. This is performed based on the timing at which the mark M provided in the leading label L is detected by the mark sensor 724.

  As shown in FIG. 9, the third roller pair 723 is disposed horizontally with the peripheral surfaces pressed against each other, and both ends of the third roller pair 723 are rotatably supported by the frame of the label generating device 7 and a driven roller. 723B. A gear 723a and a gear 723b are fixed to the right ends of both shafts of the driving roller 723A and the driven roller 723B, respectively, and both the gears 723a and 723b mesh with each other. A gear 723c is fixed to the left end of the shaft of the drive roller 723A, and the gear 723c meshes with a gear 726a fixed to the rotor of the motor 726 fixed to the frame of the label generating device 7 ( (See FIG. 8). The motor 726 is a motor whose speed is controlled by a servo mechanism.

  When the label generating device 7 is operated, the motor 726 rotates clockwise (in the direction of the arrow r4) in FIG. 8, and the rotational force is transmitted to the driving roller 723A via the gear 726a and the gear 723c. It rotates counterclockwise (the direction of the arrow r5 in FIG. 9, the direction in which the label base material LS is conveyed from the top to the bottom). Since the rotational force of the driving roller 723A is transmitted to the driven roller 723B via the gear 723a and the gear 723b, the driven roller 723B rotates in the clockwise direction (the direction of the arrow r6 in FIG. 9). Direction). Accordingly, the label base material LS sandwiched between the driving roller 723A and the driven roller 723B is conveyed from the top to the bottom by the rotation of both rollers 723A and 723B.

  The structure of the upper roller pair 721 and the lower roller pair 722 is basically the same as that of the third roller pair 723. In FIG. 8, members on the front side of the upper roller pair 721 and the lower roller pair 722 (the driven rollers 721B and 722B and the gears 721b and 722b are visible, but the driving rollers 721A and 722A and the gears 721a and 721a on the back side are visible. 8 is a motor for driving the upper roller pair 721, and a gear 727c fixed to the left end of the shaft of the driving roller 721A is connected to a gear 727a fixed to the rotor of the motor 727. The motor 728 is a motor for driving the lower roller pair 722. A gear 722c fixed to the rotor of the motor 728 is engaged with a gear 722c fixed to the left end of the shaft of the drive roller 722A. The motors 727 and 728 are also motors whose speed is controlled by a servo mechanism. Since then the rotation of the upper rollers 721 and lower rollers 722 when the is the same as the third roller pair 723 as described above, a description thereof will be omitted.

  The mark sensor 724 is a sensor that optically detects the presence or absence of the mark M. The mark sensor 724 is configured by, for example, a reflective photosensor or a transmissive photosensor. As shown in FIG. 4, the label substrate LS is provided with a cut position C during the same printing repeated at a predetermined pitch, and a rectangular mark M is provided on the rear side along the cut line of each cut position C. It has been. In FIG. 4, the mark sensor 724 detects the edge of the mark M across the mark M relatively from the left side as the label base material LS is conveyed in the right direction.

  The relationship between the relative displacement between the mark M and the cut position C on the label substrate LS is constant. Further, since the interval between the mark detection position H of the mark sensor 724 and the label base material cutting position K is also constant as shown in FIG. 8, the leading cut of the label base material LS when the mark sensor 724 detects the mark M is cut. The interval between the position C and the label base material cutting position K is also constant. Therefore, the timing at which the leading cut position C of the label base material LS reaches the label base material cutting position K can be known from the timing at which the mark sensor 724 detects the mark M and the conveyance speed of the label base material LS.

Control unit for controlling the driving of the motor 726,727,728 (see FIG. 12), the period in which the rotary blade 711 is revolved label substrate transporting section S _t (label base material conveyance period) T _t in motor 726, After starting the driving of 727 and 728, the driving stop of the motors 726, 727 and 728 is controlled based on the detection signal of the mark M by the mark sensor 724, so that the leading cut position C of the label base material LS is accurately determined. Set to label substrate cutting position K.

  FIG. 12 is a block diagram showing an electrical configuration of the label generating device 7. In this figure, the same members as those shown in FIGS. 5 to 11 are denoted by the same reference numerals.

  The control unit 73 performs a function of performing overall control of the transport operation of the label base material LS by the motors 726, 727, and 728 of the label generation device 7 and the cutting operation of the label base material LS by the rotary blade 711. The control unit 73 includes a microcomputer including a CPU (Central Process Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). When the CPU executes the control program for the label base material cutting operation stored in the ROM, the label base material LS cutting operation of the rotary blade 711 in the label base material cutting unit 71 and the first through first labels in the label base material transport unit 72 are performed. The intermittent conveyance operation of the label base material LS by the third roller pair 721 to 723 is controlled.

  The control unit 73 is connected to a main control unit (not shown) that performs overall control of the label mounting apparatus 1, and the control unit 73 sends and receives control signals and data relating to label mounting operations to and from the main control unit. To control the label generation operation. The control program of the main control unit is programmed so that the rotation speed of the main shaft 51 of the label mounting unit 5 can be changed in multiple stages (for example, three stages of low speed, standard, and high speed). The supply status of the bottle B, the installation status of the label L, and the delivery status of the bottle B with the label are monitored, and the rotation speed of the main shaft 51 of the label mounting section 5 is controlled to an optimum speed according to these statuses.

  Since the drive system of the label delivery unit 4 is mechanically connected to the drive system of the label mounting unit 5, when the rotational speed of the main shaft 51 of the label mounting unit 5 changes, the label delivery unit 4 synchronizes with the change. The receiving speed of the label L from the label generator 7 changes. Accordingly, since the label generation speed of the label generation device 7 is also changed in synchronization with the change in the rotation speed of the main shaft 51 of the label mounting section 5, information relating to the rotation speed of the main shaft 51 is input from the label mounting section 5 to the control section 73. The

The information about the rotation speed of the main shaft 51 is not digital data indicating the rotation speed, but a predetermined number output by the encoder of the main shaft 51 during the period in which the label mounting unit 5 conveys the bottle B by the bottle interval D _B (see FIG. 1). This is information of a reference pulse group including (for example, 5000) pulses. Period the bottle B moves by the bottle spacing D _B min corresponds to the period of processing bottle mounting unit 5 attaches the label L to the bottle B. When the rotation speed of the main shaft 51 is lowered, the label mounting cycle of the bottle mounting portion 5 is lengthened. However, as the label mounting cycle is lengthened, the cycle of pulses output from the encoder of the main shaft 51 is also increased. When the rotation speed is increased, the label mounting cycle of the bottle mounting unit 5 is shortened. However, as the label mounting cycle is shortened, the pulse cycle output by the encoder of the spindle 51 is also shortened. Since the number of pulses included in the reference pulse group is constant regardless of the rotation speed of the main shaft 51, the label L is generated at the timing when the reference pulse group is input regardless of the change in the rotation speed of the main shaft 51 of the label mounting unit 5. Then, the label generation speed is synchronized with the label mounting speed of the label mounting unit 5.

The control unit 73 controls the revolution period _Tr of the rotary blade 711 based on the reference pulse group output from the pulse encoder of the main shaft 51 of the label mounting unit 5. That is, the control unit 73 controls the revolution motor 713 to make one rotation at a cycle in which the reference pulse group is input. Thus, the revolution velocity v _r of the rotary blade 711 is synchronized with the rotational speed of the spindle 51 (label mounting speed of the label mount 5) varies with a change in the rotational speed of the spindle 51. On the other hand, the control unit 73 individually controls the label base material cutting period T _c and the label base material transport period T _t (= T _r −T _c ) within the revolution period T _r . Specifically, the revolving speed v _{rc at} which the rotary blade 711 moves in the label base material cutting section S _c (refer to the section from the point S to E in FIG. 16) and the label base material transport section _St (E in FIG. 16). The revolving speed v _rt that moves in the section from point to point S) is individually controlled to an appropriate speed. This speed control will be described later.

  The servo amplifier 726A and the pulse encoder 726B are components of a servo mechanism that controls the rotational speed of the motor 726 that is a driving source of the third roller pair 723A, 723B. The pulse encoder 726 </ b> B is a photoelectric rotary encoder fixed to the rotor of the motor 726. When the rotor of the motor 726 rotates, a predetermined number of pulses are output per rotation from the pulse encoder 726B. The pulse output from the pulse encoder 726B is input to the control unit 73.

  The servo amplifier 726A controls the rotational drive of the motor 726. The control unit 73 detects the rotational speed of the motor 726 based on the pulse input from the pulse encoder 726B, generates a control signal based on the detected value and the target speed, and outputs the control signal to the servo amplifier 726A. The servo amplifier 726A controls the rotational speed of the motor 726 to the target speed based on the control signal input from the control unit 73.

  The servo amplifier 727A and the pulse encoder 727B are components of a servo mechanism that controls the rotation speed of the motor 727 that is a drive source of the upper roller pair 721. The pulse encoder 727B is a photoelectric rotary encoder fixed to the rotor of the motor 727. The servo amplifier 728A and the pulse encoder 728B are components of a servo mechanism that controls the rotation speed of the motor 728 that is a driving source of the lower roller pair 722. The pulse encoder 728B is a photoelectric rotary encoder fixed to the rotor of the motor 728.

  The servo amplifier 713A and the pulse encoder 713B are components of a servo mechanism that controls the rotational speed of the motor 713 that is a drive source of the arm 712C. The pulse encoder 713B is a photoelectric rotary encoder fixed to the rotor of the motor 713. The cutting device 75 is a device corresponding to a portion including the rotary blade 711, the rotary blade rotating motor 714, the rotational force relay member 717, and the belts 718A and 718B.

  Servo control of the rotation speed of the motor 727 by the servo amplifier 727A and the pulse encoder 727B, servo control of the rotation speed of the motor 728 by the servo amplifier 728A and the pulse encoder 728B, and servo control of the rotation speed of the motor 713 by the servo amplifier 713A and the pulse encoder 713B. Is the same as the servo control of the rotational speed of the motor 726 by the servo amplifier 726A and the pulse encoder 726B described above. Therefore, description of the servo control of the rotational speeds of the motors 727, 728, and 713 is omitted.

  As described above, the mark sensor 724 is a sensor that detects the mark M of the label base material LS. For example, the mark sensor 724 outputs a rectangular wave detection signal to the control unit 73 when the light is shielded by the mark M and becomes low level, and when the light shielding is released, the mark sensor 724 becomes high level. The control unit 73 detects the falling timing of the detection signal of the mark sensor 724, and controls the stop of driving of the motors 726, 727, and 728 using the detection as the detection signal of the mark M.

  The operation display unit 74 allows the operator to make various settings relating to the label mounting operation (the type of the label base material LS, the interval between the cut positions C, the production speed of label mounting, etc.), and the status of the label mounting operation. It is a member to do. The operation display unit 74 includes a touch panel type display unit, and an operator can input desired information to the control unit 73 by performing a predetermined touch operation on the touch panel. In addition, various types of information related to the label mounting operation (for example, information such as label mounting speed and contents of monitoring of the label mounting operation) are displayed on the display unit of the operation display unit 74.

  Next, control of the revolution speed of the rotary blade 711 in the label generating apparatus 7 according to the present invention will be described.

The revolution period _Tr of the rotary blade 711 of the label generation device 7 corresponds to the label generation period of the label generation device 7. Since the control unit 73 synchronizes the label generation cycle of the label generating device 7 with the label mounting cycle of the label mounting unit 5, when the label mounting cycle becomes longer than the standard cycle (the transport speed of the bottle B in the label mounting unit 5 is standard). The control unit 73 increases the revolution period _Tr of the rotary blade 711 of the label generating device 7.

When the revolution period T _r of the rotary blade 711 becomes longer than the standard revolution period T _ro , the control unit 73 sets the revolution speed v _r of the rotary blade 711 to the standard revolution speed when performing control to revolve the rotary blade 711 at a constant speed. Since the control is performed at a speed lower than v _ro , the label base material cutting period T _c is also longer than the standard label base material cutting period T _co . As described with reference to FIG. 18, when the control unit 73 makes a control to lower the revolution speed v _r of the rotary blade 711, a lower speed than the cutting minimum speed v _s the control speed can be reliably cut the label substrate LS Then, there is a possibility that each label L cannot be reliably separated from the label base material LS.

In the label generating apparatus 7 according to the present embodiment, the control target v _co of the revolution speed of the rotary blade 711 calculated by the control unit 73 based on the reference pulse group input from the label mounting unit 5 is higher than the minimum cutting speed v _s. If slower, as shown in FIG. 13 (c), it sets a control target of its revolution velocity v _r to cut minimum speed v _s. In FIG. 13C, the leftmost point S on the horizontal axis indicates the cutting start timing of the label base material LS when the revolution speed of the rotary blade 711 is set to the control target v _co and is rotated at a constant speed, and the point E is The cutting end timing of the label base LS is shown, and the rightmost S point shows the cutting start timing of the next label base LS after the revolution of the rotary blade 711 is finished. Further, the point E ′ indicates the cutting end timing of the label base material LS when the revolution speed of the rotary blade 711 is set to the minimum cutting speed v _s and the label base material cutting section _Sc is revolved. timing revolution ends of the rotary blade 711 when controlling the low speed to revolve label substrate transporting section S _t than the control target v _co revolution speed of the rotary blade 711 at a point E '(the next label substrate LS cutting start timing).

As shown in FIG. 13 (c), by setting the control target of the revolution speed v _r to cut minimum speed v _s, '(period from point S S' to point) orbital period T _r of the rotary blade 711 rotating blade When the revolution speed of 711 is set to the control target v _co at the time of constant speed revolution calculated based on the reference pulse group, the revolution period T _r (the period from the S point to the next S point) becomes shorter, and the rotary blade The revolution period _{Tr of} 711 is not synchronized with the label mounting period. Therefore, the control unit 73, the label base material conveying section S _t, so that the label substrate convey time T _t is (T _r -T _c '), control the revolution speed v _r of the rotary blade 711 target v Control to a speed v _t lower than _co .

This speed v _t is
T _r = 2πR / v _co
T _c '= R · θ / v _s
T _t ′ = (2πR−R · θ) / v _t
T _r = T _c '+ T _t '
However, v _s > v _co , v _co > v _t
Therefore, from T _r = R · θ / v _s + (2πR−R · θ) / v _t = 2πR / v _co
v _t = (2π−θ) · v _s · v _co / (2π · v _s −θ · v _co )
= (2π−θ) · v _s / [2π · (v _s / v _co ) −θ]
It is. And when v _s / v _co = k,
v _t = (2π−θ) · k · v _co / (2π · k−θ) (1)
It becomes.

13A shows a speed control profile of the motor 727 which is a drive source of the upper roller pair 721, and FIG. 13B shows a speed control profile of the motor 728 which is a drive source of the third roller pair 722. It is a profile. In FIG. 13 (c), the has been described a transient period of changing the "v _t" the revolution speed v _r from the "v _s" of the label base material conveying section S _t of the end position E at the rotary blade 711, the since the transient period is a very short period, in the actual control, the revolution speed of the rotary blade 711 is switched instantaneously to the speed v _t from the velocity v _s in the end position E of the label base material conveying section S _t.

13 (a) and 13 (b) show that the label substrate LS cut position C is intermittently moved to the label substrate cutting position K by making full use of the label substrate transport period T _t ″ (= T _r −T _c ′). since in the example being conveyed, the rotational speed of the motor 727 and 728 at the start position S of the label base material conveying section S _t is a control to be zero. end position of the label base material conveying section S _t The driving of the motor 728 is started from a position slightly before E. The conveying member that conveys the label L separated from the label base material LS by the rotary blade 711 to the label delivery unit 4 by the lower roller pair 722. The reason why the driving of the motor 727 is delayed by a predetermined timing from the start of driving of the motor 728 is that the label base material LS is sent at the timing when the lower roller pair 722 passes the label L completely to the conveying member. The tip of This is to be nipped by the stepped rollers 722.

When the label generating apparatus 7 according to the present embodiment further conveys the rotary blade 711 with the control target v _co at the constant speed revolution calculated by the control unit 73 based on the reference pulse group, the label base material conveyance period T _t ( = T−T _c ) is the time T ₁ = D required for the first to third roller pairs 721 to 723 to transport the label base material LS by the cut length D _c at the predetermined label base material transport speed v ₁ case _c / v ₁ which is longer than [sec], as shown in FIG. 14 (c), was calculated based on the revolution speed v _r of the rotary blade 711 in the label base material cutting period T _c 'to the reference pulse group A speed v _c (> v _co ) faster than the control target v _co is set.

As shown in FIG. 14 (c), set to a faster rate v _c than the calculated control target v _co based control target revolving speed v _r to the reference pulse group, rotating the label base material cutting period T _c ' since shorter than the label base material cutting period T _c in the case where the revolving speed v _r of the blade 711 to the control target v _co, label substrate convey time _{T t "(= T r -T} c ') a label substrate longer than the cutting time _{T t (= T r -T c} ). Accordingly, as shown in FIG. 14 (a) (b), the rotational speed of the motor 727 and 728 to a predetermined label substrate conveyance speed v _l The leading cut position C of the label base material LS can be transported to the label base material cutting position K within the label base material transport period T _t ″.

Speed control indicated by one-dot chain line in FIG. 14 (a) (b) profile, the rotation of the case where the revolving speed v _r of the blade 711 and the control target v _co the label base material cutting within the period T _c of the label substrate LS This is a speed control profile required for transporting the leading cut position C to the label substrate cutting position K. When the revolution speed v _r of the rotary blade 711 is set to the control target v _co , the rotational speeds of the motors 727 and 728 are increased to a speed v ₃ higher than a predetermined label substrate transport speed v _{1 as} indicated by a dashed line. must be, for example, if the label base material S is changed to the long type of cut length D _c, the operator changes the control value of the program of speed control of the motor 726,727,728 from the operation display unit 74 There is a need to.

Also in the example of FIG. 14, setting the control target of the revolution speed v _r to the control target v faster rate v _c than _co, revolution speed v _r of the orbital period T _r of the rotary blade 711 'is rotating blades 711 control target v shorter than orbital period T _r in the case of setting the _co and from orbital period T _r of the rotary blade 711 is out of sync with labels attached cycle, the control unit 73, the label base material conveying section S _t The revolution speed v _r of the rotary blade 711 is controlled to a speed v _t lower than the control target v _co so that the label base material transport period T _t becomes (T _r −T _c ′). In this case, the equation for calculating the velocity v _t is the same as the equation (1).

FIG. 15 is a flowchart showing a control operation of the revolution speed of the rotary blade 711 in the label generating device 7 by the control unit 73. In particular, during operation of the label generation apparatus 7, and a revolving speed v _t of the revolution speed v _c and the label base convey time T _t of the label base material cutting period T _c shown in the example of embodiment and 14 in FIG. 13 It is a flowchart about the control operation made to differ.

During operation of the label generation apparatus 7, the control unit 73 calculates a control target v _co revolving speed v _r of the rotary blade 711 based on the reference pulse group inputted from the label attachment unit 5 (S1), the control target v _co it is determined whether or not slower than cleavage minimum speed v _s (S2). If the control target v _co cutting minimum speed v _s or more (S2: NO), the control unit 73, the label group to another kind revolve label substrate transporting section S _t a rotary blade 711 with the control target v _co The material transport period T _t is calculated (S3), and the label base material transport period T _t is used by the label base material transport unit 72 to intermittently transport the leading cut position C of the label base material LS to the label cutting position K. It is determined whether or not it is shorter than the required intermittent conveyance time T _to (S4). If the label substrate convey time T _t is the intermittent transport time _T-to above (S4: NO), the control unit 73 sets the revolution speed v _r of the rotary blade 711 to the control target v _co (S5), the control The target v _co is output to the servo amplifier 713A (S11), and the process returns to step S1.

On the other hand, if the control target v _co is a low speed from the cutting minimum speed v _s in step S2 (S2: YES), the control unit 73, cutting the revolving speed v _r of the rotary blade 711 in the label base material cutting period T _c The minimum speed v _s is set (S6), and the speed v _t calculated by the equation (1) is set as a control target for the revolution speed v _r of the rotary blade 711 in the label base material conveyance period T _t (S7). Then, the control unit 73 outputs control target v _s of the revolution speed of the label base material cutting period T _c and the label base convey time T _t, a v _t servo amplifier 713A (S11), the flow returns to step S1 .

When the label base material transport period _Tt is shorter than the intermittent transport time T _to in step S4 (S4: YES), the control unit 73 performs a predetermined label base material cutting period that satisfies T _c <T _r −T _to. set T _c (S8), the control of the revolution speed v _r of the label base material cutting period T _c and a label cutting section S _c and the rotary blade 711 speed v _c, which is calculated in the label base material cutting period T _c by A target is set (S9). The control unit 73 sets the control target of the revolution speed v _r of the rotary blade 711 with a revolving speed v _c a velocity v _t calculated by equation (1) in the label substrate convey time T _t (S10) . Then, the control unit 73 outputs control target v _c of the revolution speeds of the label base material cutting period T _c and the label base convey time T _t, a v _t servo amplifier 713A (S11), the flow returns to step S1 .

The flowchart shown in FIG. 15 is a control for automatically controlling the revolution speed v _r of the rotary blade 711 to a suitable speed in accordance with a change in the label attached speed during the label attachment operation label mounting apparatus 1 However, the change contents of the label mounting speed of the label mounting apparatus 1 (for example, the operation speed of three levels of label mounting) can be set in advance by the operator from the operation display unit 74. v maximum and minimum values of _r can be known in advance.

Therefore, when setting the operating speed of the label attached by the operator, and calculates the minimum value v _rmin of the revolution speed v _r of the rotary blade 711 based on the setting contents, the minimum value v _rmin is the label substrate cutting speed v _s If lower than automatically controlled to set the label base material cutting speed v _s revolution speed v _c of the label base material cutting section S _c based on the switching information to the low-speed driving speed of the label mounting apparatus 1 It may be content.

The same applies to the revolution speed v _t of the label base material transport section _St , and the operator sets the cut length D _c of the label base material LS from the operation display unit 74 before the start of label mounting operation. The time T _to required for intermittent feeding of the label base material LS is calculated based on the calculation value, and the calculation process of steps S8 _to S10 is performed based on the calculated value T _to to switch the operation speed of the label mounting apparatus 1 to a low speed. automatically it may be control content set in advance calculated value of revolution speed v _t of the revolution speed v _c and label base material conveying section S _t of the label base material cutting section S _c based on the information.

The contents of these controls are the calculation of the revolution speed v of the rotary blade 711 corresponding to each speed set in advance according to the change in the label mounting operation speed without performing the calculations in steps S6 to S10 during the label mounting operation. Since only _c and v _t are switched, there is an advantage that the processing load on the control unit 73 is reduced and high-speed processing can be handled.

As described above, according to the label generation apparatus 7 according to the present embodiment, without changing the orbital period T _r of the rotary blade 711, the revolution speed v _t and the label base of the rotary blade 711 in the label substrate transporting section S _t it is possible to control to vary the revolution speed v _c of the rotary blade 711 in timber cutting section S _c, for example, the revolution speed v _c of the rotary blade 711 in the label base material cutting section S _c is the label substrate LS to ensure that if becomes a low speed with a risk that can not be cut and the label substrate transporting section S _t a label substrate convey time the rotary blade 711 revolves T _t is the intermittent feed of the label substrate LS by label base material conveying section 72 even inconvenience when such shorter than the time T ₁ required, it is possible to reliably avoid the inconvenience by appropriately controlling each and revolution velocity v _c and a revolving speed v _t of the rotary blade 711.

  Moreover, the trouble and maintenance of the label mounting operation of the label mounting apparatus 1 based on the adjustment of the revolution speed of the rotary blade 711 of the label cutting apparatus 7 can be reduced.

DESCRIPTION OF SYMBOLS 1 Label mounting apparatus 2 Bottle supply part (bottle supply means)
20 belt conveyor 21 screw 22 star wheel 3 label supply unit (label generation device)
4 Label delivery section 41 Rotating shaft 42 Take-up member 5 Label mounting section (bottle mounting means)
DESCRIPTION OF SYMBOLS 51 Main axis | shaft 52 Supporting board 53 Label mounting head 54,55 Cam board 56 Cam member 6 Bottle unloading part 7 Label production | generation apparatus 71 Label base material cutting part (label base material cutting means)
711 Rotating blade 711a Rotating shaft 711 'Dummy rotating blade 712A Base panel 712B Support shaft 712C Arm 712D Support plate 713 Revolving motor 713A, 726A, 727A, 728A Servo amplifier 713B, 726B, 727B, 728B Pulse encoder 713 Rotating motor 715 Pulley 716 Timing belt 717 Rotational force relay member 718A, 718B Belt 72 Label substrate transport unit (label substrate transport means)
721 First roller pair (upper roller pair)
721a, 721b, 721c Gear 722 Second roller pair (lower roller pair)
722a, 722b, 722c Gear 723 Third roller pair 723a, 723b, 723c Gear 724 Mark sensor 725 Protection member 726, 727, 728 Motor 726a, 727a, 728a Gear 73 Control section (revolution speed control means)
74 Operation display section 75 Cutting device

Claims (7)

A label base material transporting means for intermittently transporting the strip-shaped label base material repeatedly subjected to the same printing at a predetermined pitch in the longitudinal direction and setting the leading cut position in the label base material to the label base material cutting position; ,
The label base material which is set to the label base material cutting position by the label base material transporting means while revolving while rotating the cutting means in a plane orthogonal to the transport direction of the label base material at the label base material cutting position. Label substrate cutting means for moving the cutting means laterally relative to the label substrate to separate the leading label;
A revolution speed control means for controlling the revolution speed of the cutting means so as to synchronize the revolution period of the cutting means with a predetermined period;
In a label generating apparatus comprising:
The revolution speed control means is configured to change the number of the cutting means in the first revolution section in which the cutting means moves to cut the label base material on the revolution path of the cutting means without changing the revolution period. 1 revolution speed and the second revolution speed of the cutting means in the second revolution section in which the cutting means does not cut the label base material, and correspond to the first revolution section in the revolution period. Changing the ratio of the first period to the second period corresponding to the second revolution section ,
The label generating apparatus characterized in that the direction of rotation of the cutting means is opposite to the direction of revolution .   The revolution speed control means controls the first revolution speed to be higher than the revolution speed with respect to the revolution speed when the cutting means is caused to revolve on the revolution track at a constant speed, and the second revolution speed is controlled. The label production | generation apparatus of Claim 1 which controls the revolution speed of this to a speed lower than the said revolution speed.   The revolution speed control means controls the first revolution speed to the predetermined speed when the revolution speed is lower than a predetermined speed at which the label substrate can be reliably cut. The label generation device according to claim 2, wherein the second revolution speed is controlled to a speed lower than the revolution speed calculated by a predetermined arithmetic expression using the predetermined speed and the revolution speed.   The revolution speed control means intermittently conveys the label base material within the second period when the cutting means revolves the second revolution section at the revolution speed. If not, the first revolution speed is controlled to a predetermined speed higher than the revolution speed, and the second revolution speed is calculated by a predetermined arithmetic expression using the predetermined speed and the revolution speed. The label production | generation apparatus of Claim 2 controlled to the speed | rate lower than the said revolution speed.   The label production apparatus according to any one of claims 1 to 4, wherein the label base material is obtained by folding a cylindrical stretch film into a strip shape. A label generating device according to any one of claims 1 to 5,
Bottle supply means for supplying a large number of bottles at predetermined intervals;
Label mounting means for mounting each label generated by the label generating device on each bottle while moving each bottle supplied by the bottle supply means at a predetermined transport speed;
A label mounting apparatus comprising: The bottle conveying speed by the label mounting means can be switched in multiple stages,
The label mounting apparatus according to claim 6, wherein the predetermined cycle for synchronizing the revolution cycle of the cutting unit is a label mounting cycle based on a conveyance speed of the bottle switched and set by the label mounting unit.

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