JP3225083U - Molding machine - Google Patents

Abstract

A molding machine capable of simultaneously molding three molded articles is provided. Kind Code: A1 A position detection mark (first, second, third detecting means) provided for each of three raw film (molded articles), and a positioning mark of each raw film conveyed. Is detected, the control device 5 operates the first, second, and third drive motors 4a, 4b, and 4c for driving the first, second, and third feed rollers 3a, 3b, and 3c, respectively. Is temporarily stopped, and on the downstream side in the transport direction of each raw film, when the raw film is cut, the driving of each of the first, second, and third drive motors is resumed on condition that the cutting is completed, By repeating this operation, each raw film is simultaneously formed. [Selection diagram] Fig. 1

Description

  The present invention relates to a molding machine for forming a long strip-shaped article conveyed in one direction to form a bag or a single film.

  Conventionally, when a plastic film, which is a long strip-shaped molded product wound in a roll shape, is formed by a forming machine such as a bag making machine or a cutting machine to form a bag body or a unitary film, it is driven by a servomotor. With the rotation of the transport rollers, the raw film is pulled out of the film roll, transported in one direction, and stops transporting the film every time a mark provided on the raw film is detected. After performing predetermined processing such as cutting, conveyance is restarted, and a bag or a single film is formed by repeating these operations (see Patent Document 1).

JP-A-2-13549

  However, in a conventional molding machine as described in Patent Document 1 described above, the number of transport rollers for transporting the raw film is one or two, and only one or two raw films can be processed. There is a problem that is bad.

  The present invention has been made in view of the above problems, and has as its object to enable three molded articles to be molded simultaneously.

  In order to achieve the above-described object, a molding machine of the present invention is a molding machine that forms a long strip-shaped molded article conveyed in one direction to form a bag or a unitary film. A first, second, and third rotating shaft that is long in the width direction and that is coaxially arranged with the rotating shaft, and that conveys each of the three molded articles in the one direction that is the conveying direction by each rotation. A feed roller, first, second, and third drive motors that drive the first, second, and third feed rollers, respectively; and a second drive motor that transmits rotation of the first drive motor to the first feed roller. 1 transmission means, second transmission means for transmitting the rotation of the second drive motor to the second feed roller via the rotation shaft, and rotation of the third drive motor to the third feed roller. A third transmission means for transmitting to the roller, the first, second, and third transmission means; First, second and third detecting means which are arranged on the upstream side in the transport direction of each of the rollers and detect alignment marks provided at predetermined positions of the three molded products at predetermined pitches. And a control device for controlling the operation of each of the transmission means and each of the drive motors, wherein the first feed roller and the third feed roller do not interlock with the rotation of the rotary shaft due to the interposition of a bearing. , The second feed roller is supported by the rotating shaft so as to rotate in conjunction with the rotation of the rotating shaft, the control device, the first, the second, the second When each of the three detection means detects the alignment mark of each of the three molded articles conveyed, the operation of each of the first, second, and third drive motors is temporarily stopped, and the three Formation On condition the completion of the predetermined processing on the downstream side or upstream side of the article respectively in the transport direction, wherein the first, second, and characterized by resuming the third drive motor each operation.

  Further, the control device may control each of the transmission units such that rotation of each of the drive motors is independently transmitted to each of the feed rollers, and the control device may control each of the drive motors. Each of the transmission means may be controlled so that the rotation of any one of the drive motors is transmitted to each of the feed rollers.

  According to the present invention, when the first, second, and third detecting means detect the alignment marks of the three conveyed articles, respectively, the control device controls the first, second, and third detection means. The operation of each of the first, second, and third drive motors for driving each of the three feed rollers is temporarily stopped, and on the condition that the predetermined processing on the downstream side or the upstream side in the transport direction of each of the three molded products is completed, Since the operation of each of the first, second, and third drive motors is restarted, three molded articles can be molded at the same time, and work efficiency can be improved. Further, the control means controls each transmission means and each drive motor so as to transmit the rotation of any one drive motor to the first, second, and third feed rollers. An article or a single article having a width of three can be formed.

1 is a partial front view of an embodiment of a molding machine according to the present invention. It is a top view of the important section of one embodiment. It is a right side surface of FIG.

  One embodiment of a molding machine according to the present invention will be described with reference to FIGS.

  The molding machine according to the present invention is a cutting machine for cutting an original plastic film, and is configured as shown in FIGS. The raw film may be made of metal or paper other than plastic. In FIGS. 1 to 3, reference numerals 1a, 1b, and 1c denote three raw plastic films, each of which is a long band-shaped molded product wound in a roll shape, and are provided in advance in a printing area at a predetermined pitch. Is printed, and alignment marks M for performing later cutting or other processing are formed at the above-mentioned predetermined pitch at a position between the adjacent printing areas and unrelated to each printing area. The position detection sensors S provided for each of the source films 1a, 1b, and 1c and constituting the first, second, and third detecting means of the present invention, respectively, use the source films 1a, 1b, and 1c. Each of the alignment marks M is detected, and each detection signal is input to a control device described later. The position detection sensor S may be either a non-contact type or a contact type, and the alignment mark M may be any type as long as it can be detected by the non-contact or contact type position detection sensor S.

  In FIGS. 1 to 3, reference numeral 2 denotes a first rotation axis, 3a, 3b, 3c, which is longer in the width direction of each of the web films 1a, 1b, 1c than the total width of each of the web films 1a, 1b, 1c. Are arranged coaxially with the rotating shaft 2, and each of the first, second, and third feed rollers that conveys each of the raw films 1 a, 1 b, and 1 c in the direction of the arrow in FIG. Reference numerals 4a, 4b, and 4c denote first, second, and third drive motors each including a servo motor for driving the first, second, and third feed rollers 3a, 3b, and 3c, respectively. Controls the operation.

  The first drive motor 4a drives the first feed roller 3a to rotate, and the first feed roller 3a is rotated by the ball bearing B so as to rotate without interlocking with the rotation of the first rotary shaft 2. The rotation of the first drive motor 4a is transmitted to the second rotation shaft 8 via the belt 6 and the pulley 7, and the rotation of the second rotation shaft 8 is transmitted to the pulley 9, the belt 10 and the pulley The rotation of the first drive motor 4a is transmitted to the first feed roller 3a by the second rotation shaft 8, the belts 6, 10 and the pulleys 7, 9, and 11 via the first feed roller 3a. First transmission means 12 for transmitting the light to the roller 3a is configured.

  The second drive motor 4b rotationally drives the second feed roller 3b, and the second feed roller 3b is rotated by the connecting key 14 so as to rotate in conjunction with the rotation of the first rotary shaft 2 on the first rotary shaft. 2, the rotation of the second drive motor 4b is transmitted to the belt 15, the pulley 16, and the third rotation shaft 17, and the rotation of the third rotation shaft 17 is rotated by the pulley 18, the belt 19, and the integrally processed pulley. The rotation of the pulley 23 causes the rotation of the first rotating shaft 2, and the rotation of the second feed roller 3 b supported by the first rotating shaft 2.

  At this time, the control device 5 controls the on and off of the first and second clutches 24 and 25, which are electromagnetic clutches, and connects the pulley 18 to the third rotating shaft 17 by turning on the first clutch 24. The pulley 18 is disconnected from the third rotating shaft 17 by turning off the one clutch 24. Further, the pulleys 20, 21 are separated from the second rotary shaft 8 by turning off the second clutch 25, and the rotation of the second drive motor 4b is changed to the belt 15, the third rotary shaft 17, the belt 19, the pulleys 20, 21, and the belt. 22, transmitted to the second feed roller 3b via the first rotary shaft 2, and when the second clutch 25 is turned on, the pulleys 20, 21 are connected to the second rotary shaft 8 and the second drive motor 4b is disconnected. .

  Thus, the rotation of the second drive motor 4b is controlled by the belts 15, 19, 22, the pulleys 16, 18, 20, 21, 23, the third rotating shaft 17, and the first and second clutches 24, 25 to the second rotation. A second transmission means 26 for transmitting to the feed roller 3b is configured.

  The third drive motor 4c drives the third feed roller 3c to rotate, and the third feed roller 3c is rotated by the first bearing 2 so that the third feed roller 3c rotates without interlocking with the rotation of the first rotary shaft 2 through the ball bearing B. The rotation of the third drive motor 4c is transmitted coaxially to the belt 28, the pulley 29 and the fourth rotation shaft 30, and the rotation of the fourth rotation shaft 30 is integrally processed with the pulley 31, the belt 32. The third feed roller 3c is transmitted to the pulleys 33 and 34, the belt 35, and the pulley 36, and the third feed roller 3c is rotated by the rotation of the pulley 36.

  At this time, the control device 5 controls the on / off of the third and fourth clutches 37 and 38 composed of the electromagnetic clutch, and the pulley 31 is connected to the fourth rotating shaft 30 by turning on the third clutch 37. When the third clutch 37 is turned off, the pulley 31 is disconnected from the fourth rotation shaft 30. When the fourth clutch 38 is turned off, the pulleys 33 and 34 are separated from the second rotary shaft 8 and the rotation of the third drive motor 4c is controlled by the belt 28, the fourth rotary shaft 30, the belt 32, the pulleys 33 and 34, and the belt. The signal is transmitted to the third feed roller 3c via the third roller 35, and when the fourth clutch 38 is turned on, the pulleys 33 and 34 are connected to the second rotary shaft 8 and the third drive motor 4c is disconnected.

  As described above, the rotation of the third drive motor 4c is controlled by the belts 28, 32, 35, the pulleys 29, 31, 33, 34, 36, the fourth rotation shaft 30, and the third and fourth clutches 37, 38 to the third rotation. Third transmission means 39 for transmitting the feed roller 3c is configured.

  As shown in FIG. 3, a driven roller 41 for nipping and transporting each of the web films 1a, 1b, 1c between the first, second, and third feed rollers 3a, 3b, 3c, The first, second, and third feed rollers 3a, 3b, and 3c are provided to face each other.

  By the way, when the three raw films 1a, 1b, 1c are formed simultaneously, the first clutch 24 is turned on by the control device 5, the pulley 18 is connected to the third rotary shaft 17, and the second clutch 25 is turned off. Then, the pulleys 20 and 21 are disconnected from the second rotary shaft 8, and the control device 5 turns on the third clutch 37 to connect the pulley 31 to the fourth rotary shaft 30 and turn off the fourth clutch 38. The pulleys 33 and 34 are separated from the second rotating shaft 8, and the rotations of the first, second and third drive motors 4a, 4b and 4c are changed to the first, second and third feed rollers 3a, 3b and 3c, respectively. And the control device 5 drives the first, second, and third drive motors 4a, 4b, and 4c to control the three raw film films 1a, 1b, and 3 under three-row independent control. 1c it Conveying and shaping of les is started.

  Each of the original films 1a, 1b, and 1c conveyed by the position detection sensors S (first, second, and third detection means) provided for each of the original films 1a, 1b, and 1c, respectively. Each time the alignment mark M is detected and its detection signal is input to the control device 5, the operation of the first, second, and third drive motors 4a, 4b, and 4c is temporarily stopped by the control device 5. The transport of the original films 1a, 1b, 1c is temporarily stopped, and the original films 1a, 1b, 1c are cut by a cutting blade which is a predetermined process on the downstream side in the transport direction of each of the original films 1a, 1b, 1c. The operations of the first, second, and third drive motors 4a, 4b, and 4c are restarted by the control device 5 on condition that the processing such as cutting is completed and the processing such as cutting is completed. 1a 1b, 1c conveyance of is resumed, by repeating this operation, Kakuhara fabric film 1a, 1b, respectively 1c is molded into a single film of a predetermined length.

  When only one raw film 1a is formed, the control device 5 turns off the first and third clutches 24 and 37, turns on the second and fourth clutches 25 and 38, and turns the pulley 18 on. The pulleys 20 and 21 are connected to the second rotary shaft 8, the pulley 31 is separated from the fourth rotary shaft 30, and the pulleys 33 and 34 are connected to the second rotary shaft 8. At the same time, the second and third drive motors 4b and 4c are separated from the second rotating shaft 8, and the rotation of the first drive motor 4a is transmitted to the first, second and third feed rollers 3a, 3b and c. Is switched to the one-row control state. Then, the control device 5 drives the first drive motor 4a to start conveyance of one raw film 1a, and every time the position detection sensor S detects the alignment mark M, the operation of the first drive motor 4a is performed. Is stopped to temporarily stop the conveyance of the raw film 1a. During the stop of the conveyance, the raw film 1a is cut. When the cutting is completed, the first drive motor 4a is driven to convey the raw film 1a. By restarting these operations, one raw film 1a is formed into a single film having a predetermined length.

  In this one-row control state, one wide original film having a total width of the three original films 1a, 1b, 1c can be formed. In this case, for example, for a three wide original film, each time the position detection mark S provided at the same position as the alignment mark of the original film 1c is detected by the position detection sensor S for the original film 1c. Then, the operation of the first drive motor 4a is stopped, the transport of the wide raw film is temporarily stopped, and the raw film is cut while the transport is stopped. When the cutting is completed, the first drive motor 4a is driven. Then, the transport of the raw film 1a is restarted, and by repeating these, one raw film 1a is formed into a single film having a predetermined length.

  When forming the two raw films 1a and 1b, the control device 5 turns off the first clutch 24, disconnects the pulley 18 from the third rotating shaft 17, and turns on the second clutch 25. The pulleys 20 and 21 are connected to the second rotary shaft 8, the third clutch 37 is turned on, the pulley 31 is connected to the fourth rotary shaft 30, and the fourth clutch 38 is turned off and the pulleys 33 and 34 are turned off. Is separated from the second rotation shaft 8. Then, the rotation of the first drive motor 4a is switched to a state where it is transmitted to the first and second feed rollers 3a and 3b, and the rotation of the third drive motor 4c is transmitted to the third feed roller 3c. Can be switched to a state. At this time, the second drive motor 4b is controlled to be in a rest or stop state, and a state in which two-row simultaneous control and one-row control can be executed in parallel.

  In this state, each time the position detection sensor S detects the alignment mark M of the original film having the width of the two original films conveyed by the driving of the first drive motor 4a, the control device 5 causes The driving of the first drive motor 4a is stopped, and the transport of the raw film is temporarily stopped. During the stop of the transport, the raw film is cut, and when the cutting is completed, the first drive motor 4a is driven to drive the raw film. The transport of the anti-film is restarted, and by repeating these, the two raw films 1a and 1b are formed into a single film of a predetermined length, and at the same time, the raw film transported by the driving of the third drive motor 4c. For 1c, processing such as cutting is performed in the same manner as in the above-described three-row independent control. At this time, if the forming of the raw film 1c by the one-row control is not performed, the third drive motor 4c may be paused or stopped, and the two drive by the two-row simultaneous control as the drive source of the first drive motor 4a may be performed. A raw film having a width of a minute can be formed.

  Therefore, according to the above-described embodiment, each of the original films 1a, 1b, and 1c is conveyed by the position detection sensors S (first, second, and third detection units) provided for the original films 1a, 1b, and 1c. When the alignment mark M of each of 1a, 1b, and 1c is detected, the control device 5 drives the first, second, and third feed rollers 3a, 3b, and 3c to drive the first, second, and third rollers, respectively. When the operation of each of the three drive motors 4a, 4b, 4c is temporarily stopped, and the raw films 1a, 1b, 1c are cut on the downstream side or the upstream side in the transport direction of each of the raw films 1a, 1b, 1c, respectively. The drive of each of the first, second, and third drive motors 4a, 4b, and 4c is resumed on condition that the cutting is completed, so that the three raw films 1a, 1b, and 1c can be simultaneously formed, and Effect It is possible to improve the.

  Instead of simultaneously forming the three raw films 1a, 1b, and 1c, it is also possible to form one or two raw films, and the forming is performed according to the number of rolls of the raw film to be formed. It is possible and very efficient.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, a case will be described in which the present invention is applied to a cutting machine that manufactures a single film by cutting a raw film 1a, 1b, 1c having a predetermined printing area printed thereon into a predetermined length. However, a long plastic tube formed into a tubular shape with both ends welded as a molded product is cut into a predetermined length, and at the same time, the cut portion is welded to produce a bag, or a plurality of long bags are manufactured. The present invention can also be applied to a bag making machine that cuts a raw film on which plastic films are stacked into a predetermined length and welds three sides to produce a bag body, and is equivalent to the above-described embodiment. The effect can be obtained.

  Alternatively, the raw film may be wound by a winding roll after cutting or other processing.

  Further, during the feeding operation of the raw film, the molding pitch for cutting or the like can be automatically adjusted by detecting the alignment mark, so that a predetermined mark is provided between the detection pitches based on the alignment mark during continuous operation. In addition to the processing of adding a number, processing such as perforation processing and numbering may be performed.

  Also, the alignment marks M provided on the raw film are not necessarily at a fixed pitch, but may have a longer or shorter pitch. In this case, the rotation of the drive motor may be appropriately controlled by changing the rotation of the drive motor in accordance with the pitch of the alignment marks. do it.

  Further, the molded article is not limited to the raw film 1a, 1b, 1c made of a plastic film as described above, but may be a long paper material, a metal foil, a cloth, or a nonwoven fabric as described above. .

  INDUSTRIAL APPLICABILITY The present invention can be used as a molding machine that forms a long strip-shaped article to be conveyed in one direction to form a bag or a single film.

1a, 1b, 1c ... raw film (molded product)
2 first rotation shafts 3a, 3b, 3c first, second, third feed rollers 4a, 4b, 4c first, second, third drive motors 5 control devices 6, 10 belts (first 1)
7, 9, 11 ... pulley (first transmission means)
8... Second rotation shaft (first transmission means)
12 first transmission means 14 connecting keys 15, 19, 22 belt (second transmission means)
16, 18, 20, 21, 23 ... pulley (second transmission means)
17... Third rotating shaft (second transmitting means)
24, 25 ... first and second clutches (second transmission means)
26 second transmission means 28, 32, 35 ... belt (third transmission means)
29, 31, 33, 34, 36 ... pulley (third transmission means)
30... Fourth rotating shaft (third transmission means)
37, 38... Third and fourth clutches (third transmission means)
39 ... third transmission means M ... alignment mark S ... position detection sensor (first, second, third detection means)
B… Ball bearing

Claims (3)

In a molding machine for forming a bag or a unitary film by molding a long strip-shaped article to be conveyed in one direction,
A rotating shaft that is long in the width direction of the molded article,
A first, a second, and a third feed roller that are arranged coaxially with the rotation shaft, and that convey each of the three molded articles in the one direction that is a conveyance direction by each rotation;
First, second, and third drive motors for driving the first, second, and third feed rollers, respectively;
First transmission means for transmitting the rotation of the first drive motor to the first feed roller;
Second transmission means for transmitting the rotation of the second drive motor to the second feed roller via the rotation shaft;
Third transmission means for transmitting the rotation of the third drive motor to the third feed roller;
The first, second, and third feed rollers are disposed on the upstream side in the transport direction, and detect alignment marks provided at predetermined positions of the three molding products at predetermined pitches. First, second, and third detection means;
A control device for controlling the operation of each of the transmission means and each of the drive motors,
The first feed roller and the third feed roller are provided so as to rotate without interlocking with the rotation of the rotation shaft by the interposition of a bearing,
The second feed roller is supported by the rotating shaft so as to rotate in conjunction with the rotation of the rotating shaft,
The control device is configured to control the first, second, and third detection units when the first, second, and third detection units detect the alignment marks of the three conveyed articles, respectively. The operation of each of the drive motors is temporarily stopped, and the operation of each of the first, second, and third drive motors is performed on condition that a predetermined process on the downstream side or the upstream side in the transport direction of each of the three molded products is completed. Molding machine characterized by restarting the process.   2. The molding machine according to claim 1, wherein the control device controls each of the transmission units so that rotation of each of the drive motors is independently transmitted to each of the feed rollers. 3.   2. The molding machine according to claim 1, wherein the control device controls each of the transmission units such that rotation of one of the drive motors is transmitted to each of the feed rollers. 3.

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