JP3546515B2 - Label sticking device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a label sticking apparatus for sticking a label on which a unit price, a capacity, a price, and the like of the product are printed, on a product packaged with a synthetic resin film, and more particularly, to applying a label by moving a pressing body holding the label. The present invention relates to improvement of a mechanical attachment device for attaching.
[0002]
[Prior art]
As a device for attaching a label printed with information such as unit price, capacity, and price on the product to the product packaged by the stretch film packaging device, the label is pressed against the product by moving a pressing body holding the issued label. There is a mechanical label sticking device that sticks the label, but in the case of this mechanical label sticking device, when the height of the product changes, the sticking position (that is, the moving position) of the pressing body holding the label is adjusted to the height, and the After moving to the height position, it is necessary to return to the origin position. This is because, if the height of the product changes and becomes higher, the product is crushed unless the movement (drive) of the label pressing body is stopped when the label holding unit hits the product.
[0003]
Therefore, as a method of changing the sticking position of the label pressing body according to the height of the product, (1) presetting the sticking position for each product in advance, calling the data by the product number, and controlling the driving unit of the pressing body. And move it only to that height.
{Circle around (2)} A sensor for detecting that the label pressing body has hit the product is provided at the tip of the pressing body, and the driving of the pressing body is reversed by the detection signal of the sensor.
(3) In the method of (2), the sensor is liable to break down. As a remedy, a rotary encoder is provided in the motor for driving the pressing body, and when the signal of the rotary encoder stops changing during the movement of the pressing body, Is determined to have reached the sticking position, and the motor is reversed. (See JP-A-62-109735)
Method.
[0004]
[Problems to be solved by the invention]
However, the above-mentioned methods (1) to (3) are used to control the position where the label pressing body is applied and return the pressing body, but each has the following disadvantages.
Method (1) requires that all items with the same item number have the same height. For example, items with irregular shapes such as vegetables may have different heights even with the same item number. In such a case, there arises a problem that the product is crushed or a label cannot be attached. In addition, it takes time to perform presetting.
In the method (2), there is a problem in response speed, and the sensor and the cord connected to the sensor are moved, so that it is easily broken, and expensive parts (for example, a stepping motor) are required to reverse the motor instantaneously. It becomes.
In the method (3), expensive parts are required to instantaneously reverse the motor as in the method (2), and there is a time lag in observing a change in the signal of the rotary encoder.
[0005]
The present invention has been made in view of the above-described problems of the related art, and has as its object to preset the amount of movement of the label pressing body or to provide a sensor without providing a sensor. It is an object of the present invention to provide a mechanical label sticking apparatus that can reliably stick a label without crushing a product even when a sticking position is changed.
[0006]
[Means for Solving the Problems]
The technical means taken by the present invention to achieve the above object is that a label presser has a first position for receiving a printed and issued label and a second position for pressing the received label onto a product by sticking it. In a label sticking apparatus that moves between labels, a driving body that moves along the moving direction of the label pressing body is provided, and a connecting means that can be brought into contact with and separated from the driving body and the label pressing body is provided. Is provided from the second position to the first position direction, and the connecting means connects the driving body and the label pressing body by contact with each other, and the label pressing body presses the product to apply the label. It is characterized by being separated by the reaction force when attached. As a driving source of the driving body, an air cylinder or any other device that can reciprocate can be used.
[0007]
The connecting means is constituted by a magnet and a magnetic material attracted to the magnet, one of which is attached to the driving body and the other is attached to the label pressing body, or one of the two members which are disengaged from the driving body. And the other is attached to a label pressing body.
Further, the separation of the connecting means is provided with a label holding portion which is relatively movable in a moving direction of the pressing member on the label pressing member, and a lever is provided near a contact portion where connection with the driving member is performed. When a label is affixed, a lever is actuated by a relative moving force of the label holding unit with the label pressing body, and the connecting means is separated by the lever.
Further, the mechanism for separating the connecting means is not limited to a lever mechanism using a reaction force. For example, a mechanism that uses hydraulic pressure instead of a lever, or a switch that is turned on by a reaction force and thereby operates a solenoid to connect the connection unit When an electromagnet is used as the connecting means, a mechanism for stopping the energization by a reaction force and separating and separating the electromagnet may be used.
[0008]
[Action]
According to the above-described means, the label pressing body is connected to the driving body via the connecting means to obtain a driving force for movement, moves from the first position to the second position, and moves the held label. Press and stick on the product. Then, the connecting means connecting the label pressing body and the driving body is separated by a reaction force against the force pressing the label, whereby the driving force of the label pressing body is eliminated, and the label pressing body is actuated by the action of the urging means. It is automatically returned to the first position. In addition to the returning operation of the separated label pressing body, the driving body moves to a predetermined range and returns to the origin position (first position). At the returning position, the driving body and the label pressing body are connected again by the connecting means. Is done.
Therefore, the label can be attached to the surface of the product regardless of the height of the product. Also, when the above-mentioned connecting means is composed of a magnet and a magnetic material, the connecting means can be repeatedly brought into contact with and separated from each other. Further, the separation of the connecting means utilizes the reaction force received when the label is pressed against the product, and the reaction force is amplified by leverage. Thus, the connecting means is securely separated.
[0009]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A label pasting apparatus A is configured such that a first position for receiving a printed and printed label and a received label are pressed onto a product in a case 1 formed in a rectangular shape. A label pressing body 2 that moves in the vertical direction between a second position to be attached, a driving body 3 that moves the label pressing body 2, and the driving body 3 and the label pressing body 2 are connected so as to be able to come and go. A connecting means 4 and a fan 5 for sucking and holding the printed label a on a holding portion provided on the bottom surface of the case 1 are provided. (See FIGS. 1 and 2)
[0010]
The above-described label pressing body 2 is composed of a support 201 which is horizontally slidably mounted on two fixed guide rods 6 and 6 ′ which are laid in parallel over a top plate 1 a and a bottom plate 1 b in the case 1. A connecting frame 202 connected to a bottom surface of the support 201 at a substantially central portion in the width direction and protruding downward, and a suspension plate 203 fixed to the lower end of the connecting frame 202 horizontally. A label holding portion 205 is swingably supported by a plate 203 via a hanging rod 204 so as to swing. The label holding portion 205 extends through the opening 7 formed in the bottom plate 1 b of the case 1. And is provided so as to close the opening 7 of the bottom plate 1b. In addition, the label holding portion 205 has a cushioning material 206 such as a sponge adhered to the lower surface thereof so that the product is not damaged when the product is pressed, and a through hole 207 is opened to communicate with the inside of the case 1. As a result, a suction force is generated in the through-hole 207 by the negative pressure generated in the case 1 so that the label a can be sucked and held.
[0011]
The label pressing member 2 is slidable in the vertical direction along the guide rods 6 and 6 '. However, the label pressing member 2 is printed and issued from a second position where the label is pressed against the product and attached. An urging means 8 for urging in the direction of the first position (from below to above) for receiving a label is attached to the case 1 as a fixed member and the label pressing body 2. The biasing means 8 hooks one end of a coil spring 801 on a pin 802 which is connected and fixed to a connection frame 202 constituting the label pressing body 2, and the other end of the coil spring 801 is rotatably mounted on an upper portion in the case 1. It is folded under the case 1 via the attached pulley 803, and is hooked on a pin 804 fixed to the lower part of the case 1, whereby the label pressing body 2 is constantly urged to the first position, and the label holding portion 205 is moved to the case. 1 is in contact with the lower surface of the bottom plate 1b. (See Fig. 3)
[0012]
The driving body 3 for moving the label pressing body 2 urged to the first position by the urging means 8 to the second position where the label is pressed against the product and adhered thereto is composed of an air cylinder 301 serving as a driving source and its air. It is composed of two belts 304, 305 that amplify the stroke of the rod 302 that appears and disappears from the cylinder 301, and a moving member 306 that works in conjunction with the movement of the belt 305 that transmits the amplified stroke. In the configuration for transmitting the stroke to the belt 304, a mounting frame 303 slid with the air cylinder 301 as a guide is fixed to the rod 302, and a part of the mounting frame 303 is connected and fixed to the belt 304. (See Fig. 4)
Also, two belts 304 and 305 that amplify the stroke of the air cylinder 301 are provided on the outer upper part of the case 1 with the large pulley 307 and the small pulley 308 which are rotatably supported on the upper part of the case 1 and the lower part of the outer part of the case 1. It is wound around a coaxial small pulley 309 and a large pulley 310 that are integrally rotatably mounted on the shaft.
[0013]
The moving member 306 of the driving body 3 is located below the support 201 which is slidably movable up and down on the guide rods 6 and 6 '. The moving member 306 and the belt 305 are connected and fixed via a connecting piece 311. Reference numeral 312 denotes a spring for returning the rod 302 in the air cylinder 301.
[0014]
The connecting means 4 for connecting the label pressing member 2 and the driving member 3 includes a magnet 401 attached to the moving member 306 of the driving member 3 and a magnetic member 402 attached to the supporting member 201 of the label pressing member 2. The magnet 401 is attached to the moving member 306 by holding the magnet 401 with a support member 403 and a holding frame 404 formed in a substantially inverted L-shape. The magnetic body 402 bonded to the magnet 401 is formed of a metal plate (iron plate) that is attracted to the magnet, and the magnetic body 402 is fixed to the support 201 by screws. (See Fig. 3)
[0015]
Further, the separating mechanism 9 for separating the connecting means 4 in which the magnet 401 and the magnetic body 402 are in contact with each other and attracted and connected to each other is received by the label holding unit 205 of the label pressing body 2 when pressing the surface of the product to apply the label a. A reaction rod is used to amplify and operate the reaction force. The transmission rod 901 transmits the reaction force received by the label holding unit 205 to a position where the connecting means 4 is attached. The transmission rod 901 is composed of a lever 902 operated by a transmission rod 901, and the transmission rod 901 is fitted to a guide cylinder 903 erected and fixed to a hanging plate 203 of the label pressing body 2 so as to be slidable up and down. Is received by a receiving plate 905 fixed to the upper surface of the label holding unit 205 through a hole 904 opened in the hanging plate 203, The movement causes the transmission rod 901 to be pushed upward. (See Fig. 6)
[0016]
The lever 902 has one end acting point side (W) rotatably supported on the magnetic body 402 of the connecting means 4 by a pin 906, and the lever 902 has a force point side (F) on the opposite side to the shaft supporting portion. The support body 201 is fitted in the cavity 907 so as to be vertically movable, and a hole 908 is formed in the bottom surface of the cavity 907 so as to penetrate in the vertical direction. The upper end of the transmission rod 901 is formed with the hole 908. The lever 902 penetrates and projects into the cavity 907 so that a reaction force acts on the force point side of the lever 902. Then, the lever 902 operated by the transmission rod 901 is rotated downward at the point of action about the pin 906 of the shaft support portion, and pushes down the horizontal piece 405 of the support member 403 downward to attract the magnet 401 and the magnetic body 402. Cancel.
[0017]
In the embodiment described above, the connecting means 4 for connecting the label pressing body 2 and the driving body 3 so as to be able to contact and separate from each other uses the magnetic force of the magnet 401 and the magnetic body 402, and presses the label holding portion and the label a. Although the pressing part is configured as the same body, the connecting means 4 is not limited to the form using magnetic force, and the connecting means including a hook or the like and the label holding part and the pressing part are separately configured. Embodiments are also included in the scope of the present invention. Hereinafter, the embodiment will be described with reference to FIGS. 7 and 8.
[0018]
A guide rod 11 is vertically fixed in the case 10 across the top plate and the bottom plate, and a pressing body 12 formed in a substantially U-shaped front is attached to the guide rod 11 so as to be slidable up and down. Reference numeral 12 is urged by a spring 13 in a first position direction for receiving the label a. A plurality of push rods 20 are suspended below the push body 12 via a spring 21 so as to be vertically slidable with respect to the push body 12, and the push rod 20 is provided on the bottom plate of the case 10. It is configured to protrude out of the case 10 from the formed through hole 22. Further, a driving body 14 having the same configuration as that shown in the above-described embodiment is attached to the guide rod 11 so as to be vertically slidable. The driving body 14 can be engaged with and separated from the driving body 14 and the pressing body 12. A connecting means 15 is attached.
[0019]
The connecting means 15 has an engaging rod 16 which slides in the horizontal direction attached to the lower surface of the upper horizontal frame 12a of the pressing body 12, and the lower end of the engaging rod 16 is formed on an inclined surface 17 and has a spring. At 18, it is urged forward (to the left in the drawing).
On the other hand, an abutting rod 19 is provided on the driving body 14 for abutting engagement with the upper surface of the front end of the engaging rod 16, and the abutting rod 19 abuts and engages on the upper surface of the engaging rod 16. As a result, the lower power of the driving body 14 is transmitted to the pressing body 12 via the connecting means 15 and moves down together with the guide rod 11, whereby the lower surface of the bottom plate of the case 10 is depressurized. The label a thus sucked and held is separated from the label holding portion on the bottom surface of the case by the push rod 20, and is pressed and affixed to the product b.
[0020]
Further, the mechanism for separating the connecting means 15 utilizes the reaction force received when the push rod 20 presses the product b, as in the above-described embodiment, and the transmission rod 21 is provided at the upper end of the push rod 20. The upper end of the transmission rod 21 is connected to and protrudes upward through the upper horizontal frame 12a of the pressing body 12, and the upper end of the engagement rod 16 A hook 23 that engages with the rear portion is swingably mounted, and the transmission rod 21 is brought into contact with the other hook 23. Thereby, when the transmission rod 21 is pushed upward by the reaction force acting on the pushing rod 20, the rear part of the hook 23 is pushed upward, and the distal end side of the hook 23 is rotated counterclockwise, and the engaging rod 16 is rotated. Is slid backward (to the right in the drawing) to release the engagement of the driving body 14 with the abutment rod 19, and the pressing body 12 is automatically returned to the first position by the tensile force of the spring 13.
In the drawing, reference numeral 24 denotes a print head, and 25 denotes a dispenser.
[0021]
Next, the operation of the above-described first embodiment will be described. In the label sticking apparatus A, the inside of the case 1 is depressurized by the rotation of the fan 5 attached to the case 1, thereby adsorbing the through hole 7 formed in the bottom surface of the case 1. A force is applied, and the label a to be printed and issued is suction-held by the label holding unit 205.
When the air cylinder 301 operates, the stroke is amplified via two belts, and the moving member 306 is moved downward along the guide rods 6, 6 '. At this time, since the magnet 401 attached to the moving member 306 and the magnetic body 402 attached to the support 201 of the label pressing body 2 are in contact with and connected to each other, the label pressing body 2 is pushed down together with the driving body 3. Then, the label a is moved to the second position where the label a is pressed against and affixed to the product b.
When the label pressing body 2 moves downward and the label holding unit presses and affixes the label “a” held by the 205 to the surface of the product “b”, a pressing force acts on the label holding unit 205 and the reaction force is applied. As a result, the transmission rod 901 is pushed upward to push up the point of force (F) of the lever 902. As a result, the lever 902 rotates counterclockwise about the pin 906, and the action point side (W) of the lever 902 moves the horizontal piece 405 of the support member 403 fixed to the moving member 306 of the driving body 3 downward. By pushing down, the adsorption between the magnet 401 and the magnetic body 402 is released. The disconnected label pressing body 2 is returned to the first position by a spring 801 that urges the label pressing body 2 from the second position to the first position. Then, apart from the automatic return of the label pressing body 2 to the first position, the moving member 306 of the driving body 3 moves further downward by the stroke of the air cylinder 301, and when the predetermined stroke is reached, the moving member 306 moves upward by the return spring 312. The label presser 2 is brought into contact with the label presser 2 which stops at the first position and is connected again by the connecting means 4, so that the label presser 2 is also moved cooperatively and is ready for the next label application. Completed.
[0022]
The present invention is not limited to the above-described embodiment, but includes the following modified examples. Hereinafter, a modified example thereof will be described.
(1) In the first embodiment, the connecting means 4 is a combination of a magnet and a magnetic plate made of a metal plate (iron plate). However, the connecting means 4 may be magnets.
(2) Since the label pressing force can be adjusted by changing the lever ratio, the lever ratio should be designed according to the main product to be handled, such as increasing the lever ratio for a soft product.
(3) In the first embodiment, the separation of the connecting means 4 is performed by amplifying the reaction force at the time of pressing by leverage input. However, the present invention is not limited to this. For example, the connecting means 4 may be provided without providing the transmission rod 901. It is also possible to design the coupling force of the coupling device 4 to be separated by simply applying a reaction force at the time of pressing the label to the coupling device 4.
[0023]
【The invention's effect】
With the configuration according to claim 1, the label applying device of the present invention automatically disconnects the connection of the driving force by the contact of the label pressing body with the surface of the product even if the application position of the product changes in the vertical direction. There is no need to provide a sensor or preset the stroke amount for each product number as in the conventional device.
Moreover, since it is not necessary to return the driving body to the origin position (first position) instantaneously (simultaneously with the completion of labeling), it is not necessary to perform advanced control on the driving body. Further, the label pressing body immediately returns to the origin position without being synchronized with the driving body after completion of label sticking by the urging means, and can hold the label. Therefore, it is not necessary to delay the label issuance too much. After all, since only a simple reciprocating motion is performed, an inexpensive driving source may be used as the driving source of the driving body, and the label can be applied at a high speed without damaging various heights of different products.
[0024]
Further, in the case of the configuration described in claim 2, the connection and disconnection of the driving body and the label pressing body can be repeatedly and smoothly performed with a simple configuration, and can be reliably performed.
Further, in the case of the configuration shown in claim 3, the reaction force received when applying the label is used, and the reaction force is amplified by leverage to separate the connecting means. The product does not need to be given, and soft products are not crushed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing an embodiment of the label sticking apparatus of the present invention.
FIG. 2 is a partially cutaway side view of FIG.
FIG. 3 is an exploded perspective view showing a part of a label pressing body and a driving body.
FIG. 4 is a perspective view showing a driving mechanism of a driving body.
FIG. 5 is a vertical sectional side view showing an operation state of a label pressing body.
FIG. 6 is an enlarged sectional view showing a state in which a connecting means for connecting the driving body and the label pressing body is separated.
FIG. 7 is a partially cutaway front view showing another embodiment.
FIG. 8 is a partially cutaway sectional view showing a separated state of the connecting means shown in FIG. 7;
[Explanation of symbols]
A: Label sticking device a: Label b: Product 1 ... Case 2 ... Label pressing body 205 ... Label holding part 3 ... Driver 4 ... Connecting means 401 ... Magnet 402 ... Magnetic body 8 ... Biasing means

Claims (3)

In a label sticking apparatus in which a label pressing body moves between a first position for receiving a printed and issued label and a second position for pressing the received label onto a product and pasting the label, the label pressing body extends along a moving direction of the label pressing body. And a connecting means which can be brought into contact with and separated from the driving body and the label pressing body, and an urging means for urging the label pressing body from the second position toward the first position. The label attaching device is characterized in that the connecting means connects the driving body and the label pressing body by contact with each other, and the label pressing body separates by a reaction force when the label pressing body presses the product and affixes the label. 2. The label sticking apparatus according to claim 1, wherein said connecting means comprises a magnet and a magnetic material attracted to said magnet. The above-mentioned label pressing body has a label holding portion movable relative to a moving direction of the pressing body, and a lever is provided near a contact portion where connection with a driving body is performed, and the label holding portion is attached at the time of label sticking. The label sticking apparatus according to claim 1 or 2, wherein the lever is operated by a relative moving force of the part with the label pressing body, and the connecting means is separated by the lever.

Images