JP2006150425A - Apparatus for manufacturing bottle can and method for manufacturing bottle can - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve production efficiency in an initial stage when restarting the manufacturing of a bottle can. <P>SOLUTION: The apparatus is equipped with a speed measurement means for measuring the moving speed in the direction where a workpiece holding section 30 and a tool holding section 40 approach each other and a controller which controls the supply of a bottomed cylindrical body by a workpiece supply means based on the measurement result of the speed measurement means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bottle can manufacturing apparatus and a bottle can manufacturing method for filling drinking water or the like.

  This type of bottle can generally includes a large-diameter barrel, a shoulder that gradually decreases in diameter from the upper end of the barrel, and a small-diameter base that extends upward from the upper end of the shoulder, A cap is screwed onto a male screw portion formed in the base portion. The bottle can is formed by performing DI processing on a metal plate to form a bottomed cylindrical body, and then performing neck-in processing on the opening of the cylindrical body a plurality of times to form the shoulder portion and the base portion. After that, it is formed by subjecting the base part to a screw forming process, a curl part forming process and the like.

  As a bottle can manufacturing apparatus for performing such processing on the bottomed cylindrical body, a work holding unit for holding a bottomed cylindrical body as shown in, for example, Patent Document 1 below, A tool holding portion provided with a forming tool for forming a bottom cylindrical body, and a drive coupled to at least one of the work holding portion and the tool holding portion so as to be driven closer to and away from each other And a workpiece supply means for supplying the bottomed cylindrical body to the workpiece holding portion, and the workpiece holding portion is configured such that the opening of the bottomed cylindrical body faces the molding tool. When the tool holding portion is moved relatively close to the work holding portion by the driving portion, the bottomed cylindrical body is formed by the forming tool and formed into a bottle can. I know the composition To have.

By the way, in such a bottle can manufacturing apparatus, when resuming the manufacturing of the bottle can from a stopped state, in order to prevent an excessive load from acting on each component of the apparatus, the work holding unit and The speed at which the tool holding part moves is gradually increased to reach a predetermined moving speed (hereinafter referred to as “steady speed”). For this reason, the inertial force in the approaching movement direction acting on the work holding part or the tool holding part is different between the steady speed and the initial stage from when the apparatus is stopped until the steady speed is reached. It will be. Therefore, the amount of inertial movement due to the inertial force in the approaching direction acting on each component of the apparatus during the approaching movement differs between the steady speed and the initial stage, and the tool holding part and the work holding part The distance will be different. Specifically, during the approaching movement, the inertia force (inertia movement amount) is small in the initial stage, so the distance between the work holding part and the tool holding part is large, whereas the inertial force is in the steady speed state. The distance is small because it is large.
Japanese Patent Laid-Open No. 2004-123231

However, since such a bottle can manufacturing apparatus is generally designed based on the state of the steady speed, at the initial stage, the processing position with respect to the bottomed cylindrical body by the molding tool is not set. The position was higher than the design (on the opening side), and the following molding defects occurred.
First, when a neck-in mold is provided as the molding tool, the mold does not reach a desired height position from the open end of the bottomed cylindrical body toward the bottom side, and the neck-in mold is Processing becomes insufficient, for example, it cannot be formed into a desired diameter reduction ratio.
Next, when a trimming device is provided as the forming tool, the cutting amount of the open end of the bottomed cylindrical body is small in the initial stage, and a desired flatness is provided on the open end surface of the bottomed cylindrical body. It cannot be provided, or the bottomed cylindrical body cannot be set to a desired height. In particular, in the initial stage, the generated chips are likely to be thin and long, so there is a possibility that the chips are entangled with the cutting means provided in the trimming apparatus.

Since it is necessary to suppress the manufacture of the bottle can at the initial stage as much as possible, conventionally, in the initial stage, the moving speed has become the steady speed from the display of the manufacturing apparatus, for example, by the operator. After the visual confirmation, the workpiece supply means is operated by the operator's hand to supply the bottomed cylindrical body to the workpiece holding portion.
In addition, when resuming the production of the bottle can as described above, the bottomed cylindrical body that has been supplied to the work holding unit in the final stage of the previous production may remain, and the bottomed cylindrical body Since the molding process is performed at the initial stage, the bottle can formed in this way becomes a defective molding as described above, for example. Therefore, in this case, in the initial stage, the operator visually confirms that the moving speed has reached the steady speed and operates the workpiece supply means, and the defective molding product is not conveyed to the next process. Therefore, it is necessary to switch the conveying means so as to be discharged from the bottle can manufacturing apparatus and to confirm that all such defective molding products are discharged.
For this reason, the improvement of the manufacturing efficiency in the said initial stage was calculated | required.

  The present invention has been made in view of such circumstances, and a bottle can manufacturing apparatus and a bottle can manufacturing method capable of improving the production efficiency in an initial stage of resuming the manufacturing of the bottle can from a stopped state. The purpose is to provide.

  In order to solve such problems and achieve the above object, the bottle can manufacturing apparatus of the present invention includes a workpiece holding unit that holds a bottomed cylindrical body, and a molding process on the bottomed cylindrical body. A tool holding part provided with a forming tool to be applied, a drive part connected to at least one of the work holding part and the tool holding part and driven to approach and separate from each other, and the work holding part A workpiece supply means for supplying the bottomed cylindrical body, and the workpiece holding section is configured to hold the bottomed cylindrical body so that an opening thereof faces the molding tool, and the drive When the tool holding part is moved relatively close to the work holding part by a part, the bottle can is formed into a bottle can by forming the bottomed cylindrical body by the forming tool. Before the device A speed measuring means for measuring the speed at which the work holding section and the tool holding section are moved toward each other is provided, and the supply of the bottomed cylindrical body by the work feeding means is controlled based on the measurement result of the speed measuring means. It is characterized by the fact that a control unit is provided.

  According to the bottle can manufacturing apparatus and the bottle can manufacturing method according to the present invention, the bottomed cylindrical body is supplied by the work supply means based on the measurement result of the speed measurement means, as well as the speed measurement means. Since the control part which controls this is provided, the improvement of the production efficiency in the initial stage which restarts manufacture of a bottle can from a stop state can be aimed at. That is, the speed measuring means sequentially measures the approaching speed, transmits the measurement data to the control unit, and the control data is equal to or higher than preset setting data corresponding to a steady speed. It becomes possible to control whether or not the workpiece supply means is operated based on the determination result. Therefore, in the initial stage, that is, from the stop state until the speed of the approaching movement becomes a steady speed, the speed of the approaching movement is automatically higher than the steady speed without requiring visual confirmation by an operator. Sometimes, the workpiece supply means is operated to supply the bottomed cylindrical body to the workpiece holder.

  Here, a take-out means for taking out the formed bottle can from the work holding part and a transport means for transporting the bottle can taken out by the take-out means are provided, the transport means from the take-out means to the bottle A main transport path for receiving and transporting cans, a sub-transport path connected to the front end of the main transport path in the transport direction, for transporting non-defective bottle cans to the next process, and a discharge path for discharging defective bottle cans And at least one of the discharge path and the main transport path is provided with a bottle can detection means for detecting the presence or absence of the defective bottle can, and the front end of the main transport path in the transport direction, Switching means for switching the transport of the bottle can to the sub-transport path or the discharge path is provided, and the control unit is configured to switch the switching means based on at least a detection result of the bottle can detection means. It is configured to switch the the it is desirable.

  In this case, since the switching unit and the bottle can detection unit are provided, and the control unit that switches the switching unit based on at least the detection result of the bottle can detection unit is provided, the workpiece is processed at the final stage of the previous manufacturing. Even when the bottomed cylindrical body supplied to the holding part remains, it is possible to improve the manufacturing efficiency in the initial stage when the manufacturing is resumed. That is, when the production is resumed, if the measurement data by the speed measurement unit is smaller than the setting data as described above, the control unit supplies the bottomed cylindrical body to the workpiece holding unit by the control unit. In addition, when all the bottle cans (non-defective products) formed at the time of the previous production have already been transported to the next process by the transport means, the bottle cans on the main transport path are discharged from the switching means. Switch to be transported to the road.

  After that, when the measurement data by the speed measurement unit becomes equal to or more than the set data, the supply of the bottomed cylindrical body to the workpiece holding unit by the workpiece supply unit is resumed, and the defective product by the bottle can detection unit The detection of the presence or absence of a bottle can (hereinafter referred to as “molded defective product”) that is formed by molding the bottomed cylindrical body remaining in the workpiece holding portion described above is started. When the defective molding product is detected by the bottle can detection means, the switching means is not operated, and the defective molding product on the main conveyance path is conveyed to the discharge path, and the bottle can detection means is provided. When the defective molding is not detected by the above, that is, after all the defective molding is discharged, the bottomed cylindrical body whose supply has been resumed is formed by operating the switching means. The switching means is switched so that a good bottle can on the main transport path is transported to the sub-transport path.

  Further, in the process of increasing the approaching speed, the supply of the bottomed cylindrical body to the work holding part by the work supply means is stopped, so the defective molding formed in the process of increasing the speed. The number of can be revealed. Therefore, when all the non-defective bottle cans formed during the previous manufacturing have already been transferred to the next process by the transfer means, instead of the above, the bottle can detection is performed immediately after restarting the bottle can manufacturing apparatus. The detection of the defective molding by means is started, and the switching means is switched so that the discharge path and the main transport path communicate with each other, and the bottle can detection means acts as a counter and is set in advance. Alternatively, when the defective molding product is counted by the bottle can detection means by the count number (hereinafter referred to as “number data”) obtained by detecting the bottomed cylindrical body in the workpiece holding unit, that is, the defective molding product. It is also possible to switch the switching means so that the sub-transport path and the main transport path communicate with each other after all of the fuel has been discharged. In this case, the defective molding is transported to the discharge path and discharged, and the non-defective bottle can formed by molding the bottomed cylindrical body whose supply has been resumed is transported to the sub-transport path and next. It can be transferred to the process.

  On the other hand, when resuming the production, if the non-defective bottle can formed at the previous production remains on the conveying means, and the conveying speed of the conveying means is constant, the controller By switching the switching means so that the sub-transport path and the main transport path communicate with each other for a predetermined time by operating the timer provided in the above, all the remaining non-defective bottle cans are subsequently transferred by the sub-transport path. Transport toward the process. Thereafter, the switching means is switched so that the discharge path and the main conveyance path communicate with each other, and after the defective molding product that has been conveyed is counted by the bottle can detection means by the number data, the switching means is again conveyed to the sub conveyance. It is possible to switch so that the road and the main conveyance path communicate with each other. In this case, the defective molding is conveyed to the discharge path and discharged, and the remaining good bottle can and the good bottle can formed by molding the bottomed cylindrical body whose supply has been resumed are formed. Can be transported to the sub-transport path and transported to the next process.

  As described above, at the beginning of manufacturing the bottle can, even when the bottomed cylindrical body supplied to the work holding unit in the final stage of the previous manufacturing is left, visual confirmation by the operator when restarting the manufacturing, etc. It is possible to automatically operate not only the workpiece supply means but also the switching means without requiring the above.

Hereinafter, an embodiment of a bottle can manufacturing apparatus according to the present invention will be described with reference to FIGS. 1 and 2.
This bottle can manufacturing apparatus 10 has a tool holder provided with a work holding unit 30 for holding a bottomed cylindrical body W formed by DI processing and a forming tool 42 for forming the bottomed cylindrical body W. The bottomed tubular body W is connected to the part 40, the drive part 22 connected to at least one of the work holding part 30 and the tool holding part 40 and driven so as to approach and separate from each other. A workpiece supply means 33 for supplying is provided.

  The work holding unit 30 is configured to hold the bottomed cylindrical body W such that the opening thereof faces the forming tool 42 of the tool holding unit 40. Furthermore, the work holding unit 30 of the present embodiment includes a disk-shaped work holding unit main body 31 supported on the support shaft 21 connected to the driving unit 22 so as to be intermittently rotatable about the axis thereof. A plurality of holding devices 32 that hold the bottomed cylindrical body W are arranged in a ring shape on the outer peripheral edge portion of the surface facing the tool holding portion 40. Note that the holding device 32 of the present embodiment holds the bottomed cylindrical body W by holding the bottom of the cylindrical body W without being in contact with the opening of the bottomed cylindrical body W. It has become. In FIG. 2, a part of the plurality of holding devices 32 is illustrated, and the remaining holding devices 32 are not illustrated.

  The tool holding portion 40 includes a disk-shaped tool holding portion main body 41 supported by the support shaft 21 so as to be able to advance and retreat in the axial direction, and on the outer peripheral edge portion of the main body 41 on the surface facing the work holding portion 30. The plurality of forming tools 42 are arranged in an annular shape at a pitch equivalent to the arrangement pitch of the holding devices 32 in the work holding unit 30. Examples of the plurality of forming tools 42 include a plurality of drawing dies for reducing the diameter (neck-in processing) of the opening of the bottomed cylindrical body W, and the opening of the bottomed cylindrical body W by the mold. A screw forming tool for forming a male screw portion in a base portion formed in the portion, a trimming device for cutting the open end of the bottomed cylindrical body W, and a curl portion on the open end portion of the cylindrical body W There is a tool for forming a curled part, etc., and these forming tools 42 are used so that the bottomed cylindrical body W opposed by the work holding part 30 can be processed according to each processing stage. The holding unit body 41 is arranged in the order of steps.

That is, the intermittent rotation stop position of the work holding portion 30 (work holding portion main body 31) with the axis of the support shaft 21 as the rotation center is set to each bottomed cylindrical body W with the opening portion facing the tool holding portion 40 side. Each bottomed tubular body W is formed for each subsequent process by intermittent rotation of the work holding part main body 31 by the drive unit 22. It is configured to be rotated and moved to a position facing the tool 42 to perform the next stage of processing.
That is, when the tool holding unit 40 moves forward and the workpiece holding unit 30 and the tool holding unit 40 approach each other, each forming tool 42 performs processing according to each process on the bottomed cylindrical body W, and holds both of them. When the parts 30 and 40 are separated from each other, the work holding part 30 is rotationally moved so that the molding tool 42 for the next process is opposed to each bottomed cylindrical body W. In this way, by repeating the operations in which the holding portions 30 and 40 approach each other to perform processing, separate and rotate, a shoulder portion and a base portion are sequentially formed on the bottomed cylindrical body W, and the bottle can 1 to be molded.

The workpiece supply means 33 is formed in a cylindrical shape with a workpiece suction portion 33a supported so as to be intermittently rotatable so as to be synchronized with the intermittent rotation of the workpiece holding portion main body 31, and directed toward the workpiece suction portion 33a. And having a delivery part 33b for delivering the bottomed cylindrical body W conveyed to the bottle can manufacturing apparatus 10 to the workpiece suction part 33a.
The workpiece adsorbing portion 33a is, for example, a disc-like body that is rotatably supported around a central axis, and is substantially the same as the radius on the outer peripheral surface of the bottomed cylindrical body W at the outer peripheral edge of the disc-like body. A plurality of pocket portions (not shown) that are notched in a semicircular arc shape with the same radius and open outward in the radial direction of the disk-like body are formed in an annular shape. Furthermore, a suction hole is formed in the notch peripheral surface of the pocket portion that is notched in the semicircular arc shape, and the outer peripheral surface of the bottomed cylindrical body W is adsorbed by vacuum air through the suction hole. By doing so, the cylindrical body W is held.

  The delivery portion 33b is formed in a cylindrical shape as described above and opens toward the outer peripheral surface of the work suction portion 33a in which the pocket portion is open (hereinafter referred to as “opening portion”). Of the bottomed cylindrical body W positioned inside the portion 33b, the bottomed cylindrical body W positioned at the front end in the conveying direction is notched around the pocket portion when the workpiece suction portion 33a is rotated and moved. The outer peripheral surface is adsorbed by the surface through the suction hole and is delivered from the delivery unit 33b to the work adsorption unit 33a. And inside the delivery part 33b, the bottomed tubular body W located on the rear side in the transport direction of the delivery part 33b with respect to the delivered bottomed tubular body W is placed on the inner surface of the delivery part 33b by its own weight. It falls while rotating around the can axis, and is transported in the delivery part 33b toward the workpiece suction part 33a.

  Further, the delivery portion 33b of the present embodiment is provided with a stopper portion (not shown) supported so as to be able to advance and retreat toward the bottom portion of the tubular body W in the can axis direction of the bottomed tubular body W positioned therein. It is installed. The stopper portion includes a stopper pin and first driving means that supports the pin so as to be able to advance and retreat, and is disposed at the front end portion in the transport direction of the bottomed cylindrical body W in the delivery portion 33b. And in the bottomed cylindrical body W located in the delivery part 33b, with respect to the bottom part of the bottomed cylindrical body W located in the conveyance direction front end, the said stopper pin is from the outer side of this cylindrical body W It is supported so as to be able to advance and retreat in the can axis direction. In such a configuration, when the stopper pin moves forward, the tip of the stopper pin presses the bottom outer surface of the bottomed cylindrical body W in the direction of the can axis toward the opening of the cylindrical body W. The cylindrical body W is configured such that the bottom outer surface thereof is in contact with the tip end portion of the stopper pin, and the opening end surface thereof is in contact with the inner surface of the delivery portion 33b so that the bottomed cylindrical body W is sandwiched. As a result, the movement of the bottomed cylindrical body W located on the rear side in the transport direction from the bottomed cylindrical body W pressed by the stopper pin toward the workpiece suction portion 33a, that is, transport is stopped. It has become.

  As described above, along with the intermittent rotation of the work holding part main body 31, the work suction part 33a also rotates intermittently in the same manner. At this time, the pocket part of the work suction part 33a disposed to face the holding device 32 The bottomed cylindrical body W is supplied from the delivery portion 33b to the holding device 32 and the pocket portion disposed opposite to the opening of the delivery portion 33b. It has become. At this time, if the stopper pin provided in the delivery portion 33b has moved backward with respect to the bottomed tubular body W, the bottomed tubular body W positioned inside the delivery portion 33b When the stopper pin is moving forward, the bottomed cylindrical body W located inside the delivery portion 33b does not move. It is like that.

Further, in the bottle can manufacturing apparatus 10 of the present embodiment, the front end in the rotation direction of the surface of the work holding unit main body 31 on which the holding device 32 is arranged, with reference to the arrangement position of the work adsorption unit 33a. The take-out means 34 is disposed at a position facing the part. The take-out means 34 has substantially the same configuration as the workpiece suction portion 33a, is formed in a disc shape, and a plurality of the pocket portions are formed in an annular shape on the outer peripheral edge thereof. The suction hole is formed in the cutout peripheral surface, and the bottle can 1 is held by adsorbing the outer peripheral surface of the bottle can 1 formed through the suction hole with vacuum air.
In the above configuration, with the intermittent rotation of the work holder main body 31, the take-out means 34 also rotates intermittently in the same manner. At this time, the pocket portion of the take-out means 34 disposed opposite to the holding device 32. Thus, by supplying vacuum air to the suction hole, the outer peripheral surface of the bottle can 1 held by the holding device 32 is adsorbed and the bottle can 1 is taken out from the holding device 32.

  Further, the bottle can manufacturing apparatus 10 of the present embodiment is provided with a transport means 50 for receiving and transporting the bottle can 1 taken out from the holding device 32 by the take-out means 34, and the transport means 50 includes: A main conveyance path 51 that receives and conveys the bottle can 1 from the take-out means 34; a sub conveyance path 52 that is coupled to the front end of the main conveyance path 51 in the conveyance direction and conveys the non-defective bottle can 1 to the next process; And a discharge path 53 for discharging the defective bottle can 1.

  The main transport path 51 includes a first main transport path 51a extending downward from an upper end portion opening toward the pocket portion of the take-out means 34, and one end portion at a lower end portion of the first main transport path 51a. A second main transport path 51b that is connected and extends in the horizontal direction, a third main transport path 51c that is connected to the other end of the second main transport path 51b and extends upward, and the third A fourth main transport path 51d connected to the upper end of the main transport path 51c and extending in the horizontal direction. In the first to third main transport paths 51a to 51c, the bottle can 1 moves while rotating around the can axis. Moreover, in order to set the bottle can 1 in an upright posture at the connecting portion between the third main transport path 51c and the fourth main transport path 51d so that the bottom of the bottle can 1 faces downward and the can axis faces in the vertical vertical direction. The raising mechanism 54 is provided.

  Further, a bottle can detection means 55 for detecting the presence or absence of the bottle can 1 on the transport path 51d is provided at the transport direction front end of the fourth main transport path 51d of the main transport path 51. Furthermore, the bottle can on the fourth main transport path 51d is connected to the connecting portion between the fourth main transport path 51d, the sub transport path 52, and the discharge path 53, which is located on the front side in the transport direction with respect to the bottle can detection means 55. Switching means 56 is provided for switching one transport to the sub transport path 52 or the discharge path 53. The switching means 56 of this embodiment is provided at a branch point between the fourth main transport path 51d, the sub transport path 52, and the discharge path 53, and rises from the surfaces of these transport paths 51d, 52, and 53. The pin member 56a is erected so as to be rotatable about its axis, the plate portion 56b disposed on the outer peripheral surface of the pin member 56a, and the pin member 56a is rotatably supported about its axis. And a second driving means (not shown). That is, the rear end portion in the transport direction of the sub transport path 52 and the discharge path 53 is opened and closed by the second driving means turning the plate portion 56b around the pin member 56a.

  By the way, the drive unit 22 of the present embodiment includes a first motor (not shown) that rotates the work holding unit main body 31 around the axis of the support shaft 21 and a tool holding unit main body 41 that is not shown in the axial direction of the support shaft 21. A second motor 23 that drives forward and backward via a crank mechanism, an inverter (not shown) that controls the driving of these first and second motors, and an encoder (speed measuring means) that detects the rotational speeds of the first and second motors ) 24 and a control unit 25 connected to the encoder 24. The rotation speed of the work holder main body 31 can be identified from the detected value of the rotation speed of the first motor by the encoder 24, and the tool holding section main body 41 can be identified from the detected value of the rotation speed of the second motor 23 by the encoder 24. The forward moving speed toward the work holding body 31 can be identified.

In addition to the encoder 24, the control unit 25 includes the first drive unit for the stopper unit provided in the transfer unit 33 b of the workpiece supply unit 33, the bottle can detection unit 55, and the second drive unit for the switching unit 56. And connected to.
In the control unit 25, based on the detected value (hereinafter referred to as “detected value”) of the rotational speed of the second motor 23 transmitted from the encoder 24, that is, based on the forward movement speed of the tool holding unit main body 41. It is determined whether to transmit an operation signal for moving the stopper pin forward or an operation signal for moving the stopper pin backward to the first driving means of the stopper portion. That is, the supply of the bottomed tubular body W to the work holding part main body 31 by the work supply means 33 is controlled based on the forward moving speed of the tool holding part main body 41. Specifically, setting data corresponding to the rotation speed of the second motor 23 when the forward movement speed is in a steady state is input to the control unit 25 in advance, and the detection value by the encoder 24 is smaller than the setting data. In this case, an operation signal for moving the stopper pin forward is transmitted to the first driving means. Conversely, when the detected value is equal to or larger than the set data, the stopper pin is moved backward by the first driving means. An operation signal is transmitted.

  Furthermore, the control unit of the present embodiment is configured so that the plate of the switching unit 56 is based on the detection result of the presence or absence of the bottle can on the fourth main conveyance path 51d by the bottle can detection unit 55 and the detection value by the encoder 24. The part 56b is pivoted to open and close the rear end portions in the transport direction of the sub transport path 52 and the discharge path 53.

  The operation of the bottle can manufacturing apparatus 10 configured as described above will be described. However, the bottle can 1 is manufactured when the rotational movement speed of the work holder main body 31 and the forward movement speed of the tool holder 41 are in a steady state. Since the method is substantially the same as the conventional technique, the description thereof is omitted. Here, the work holder 30 is restarted from the state in which the bottle can manufacturing apparatus 10 is stopped until it reaches the steady state, particularly in the present embodiment, at the time of the restart, at the final stage of the previous manufacturing. The case where the bottomed cylindrical body W held in the holding device 32 remains and all the good bottle cans 1 formed at the time of the previous manufacturing are transported to the next process by the transport means 50 will be described.

  When the manufacturing apparatus 10 is restarted, the drive unit 22 starts the rotational movement of the work holding unit main body 31 and the forward / backward movement of the tool holding unit main body 41. At this time, at the beginning of the restart by the inverter, The speed is set lower than the speed in the steady state, and the speed is gradually increased. In this process, the rotational movement and the forward / backward movement are alternately repeated, and the remaining bottomed cylindrical body W held by the holding device 32 is not formed by the forming tool 42 of the tool holding section 40. Sufficient molding is performed. In other words, a bottle can formed by molding the remaining bottomed cylindrical body W is a defective molding.

  Here, simultaneously with the restart, the stopper pin of the workpiece supply means 33 is moved forward, and the stopper pin is kept moving forward in the process of increasing the speed, so that the bottomed cylindrical body in the delivery portion 33b W is prevented from moving toward the workpiece suction portion 33a. This prevents the bottomed tubular body W from being supplied to the workpiece holding unit 30 even though the workpiece adsorption unit 33a rotates and moves with the rotation of the workpiece holding unit main body 31. At the same time, the plate portion 56b of the switching means 56 is pivoted to the sub-transport path 52 side, the sub-transport path 52 is closed and the discharge path 53 is opened, and this state is maintained in the process of increasing the speed. To do.

  Further, in the process of increasing the speed, the rotation speed of the second motor 23, that is, the forward movement speed of the tool holding body 41 is sequentially measured by the encoder 24, and the measurement data is transmitted to the control section 25. Then, the control unit 25 determines whether or not the measurement data is greater than or equal to preset setting data corresponding to the steady speed, and controls the operation of the workpiece supply means 33 based on the determination result. Specifically, when the control unit 25 confirms that the measurement data is greater than or equal to the set data, that is, when the control unit 25 is in the steady state, an operation signal is sent to the first drive unit of the stopper unit. Then, the stopper pin is moved backward to move the bottomed cylindrical body W in the delivery portion 33b toward the workpiece suction portion 33a. Thereby, supply of the bottomed cylindrical body W to the said holding | maintenance apparatus 32 of the workpiece | work holding | maintenance part 30 is restarted.

Further, when the steady state is reached, detection of the presence or absence of the bottle can 1 on the fourth main transport path 51d by the bottle can detection means 55 is started. The bottle can 1 detected at this time is subjected to the molding process in the course of increasing the speed of the bottomed cylindrical body W that has been supplied to the work holding unit 30 and remained in the final stage of the previous manufacturing. As a result, the bottle can 1 is formed, that is, a molding defect product. When the defective molding is detected by the bottle can detection means 55, the switching means 56 is not operated, the sub-transport path 52 is closed by the plate portion 56b, and the molding on the fourth main transport path 51d is performed. The defective product is conveyed to the discharge path 53. Thereafter, when the defective molding product is not detected by the bottle can detection means 55, that is, after all the defective molding products are discharged by the discharge path 53, the supply is resumed by operating the switching means 56. The switching means 56 is switched so that the non-defective bottle can 1 on the fourth main transport path 51 d formed by forming the bottomed cylindrical body W is transported to the sub transport path 52. That is, by driving the second driving means of the switching means 56 and turning the plate portion 56b toward the discharge path 53, the discharge path 53 is closed by the plate portion 56b and the sub-transport path 52 is closed. The rear end in the transport direction is opened.
Then, only the non-defective bottle can 1 formed by forming the bottomed cylindrical body W whose supply has been resumed is transported to the sub-transport path 52 connected to the next process.

  As described above, according to the bottle can manufacturing method according to the present embodiment, the drive unit 22 is provided with the encoder (speed measurement means) 24, and the bottomed by the work supply means 33 based on the measurement result of the encoder 24. Since the control unit 25 for controlling the supply of the cylindrical body W is provided, the tool holding unit is automatically and without visual confirmation by the operator in the initial stage of resuming the production of the bottle can 1 from the stopped state. When the forward moving speed of the main body 41 becomes equal to or higher than the steady speed, the workpiece supply means 33 can be operated to supply the bottomed cylindrical body W to the workpiece holding unit 30, and the manufacturing efficiency in the initial stage Can be improved.

  In particular, in the present embodiment, in addition to the encoder 24, a switching unit 56 and a bottle can detection unit 55 are provided, and the switching unit 56 is switched based on the measurement result of the encoder 24 and the detection result of the bottle can detection unit 55. Since the control unit 25 is provided, the bottomed cylindrical body W that has been supplied to the work holding unit 30 at the final stage of the previous manufacturing at the beginning of manufacturing the bottle can 1 by restarting the manufacturing apparatus 10 is provided. Even in the case of remaining, it is possible to automatically operate not only the workpiece supply means 34 but also the switching means 56 without requiring visual confirmation by the operator when restarting the manufacturing, and the manufacturing is restarted. It is possible to reliably improve the manufacturing efficiency at the beginning.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the bottomed cylindrical body W supplied to the manufacturing apparatus 10 is shown as having a configuration formed by DI processing. However, the bottomed cylindrical body W is limited to the bottomed cylindrical body W formed in this way. is not.

Moreover, in the said embodiment, although the structure provided with the bottle can detection means 55 was shown, it is not restricted to this, For example, when the control part 25 is equipped with a timer and the manufacturing apparatus 10 is restarted, when predetermined time passes. Alternatively, the switching means 56 may be switched.
Further, in the process of increasing the forward movement speed of the tool holding part main body 41, the supply of the bottomed tubular body W to the work holding part 30 by the work supply means 33 is stopped, so that each holding device 32 has a bottom. In the case where a seating sensor for detecting the presence or absence of the cylindrical body W is provided, an output signal from the seating sensor is transmitted to the control unit 25, so that the defective molding formed in the process of increasing the speed is performed. The number becomes clear (hereinafter, this number is referred to as “number data”). Therefore, when all the non-defective bottle cans 1 formed at the time of the previous manufacturing have already been transferred to the next process by the transfer means 50, the bottle can detection means 55 immediately after the bottle can manufacturing apparatus 10 is restarted. The detection of defective molding is started, and the switching means 56 is switched so that the discharge path 53 and the fourth main transport path 51d communicate with each other, and the bottle can detection means 55 acts as a counter so that only the number data is obtained. When the defective molding product is counted by the bottle can detection means 55, that is, after all the defective molding products are discharged, the switching means 56 is switched so that the sub-transport path 52 and the fourth main transport path 51d communicate with each other. May be. In this case, the defective molding product is conveyed to the discharge path 53 and discharged, and the non-defective bottle can 1 formed by molding the bottomed cylindrical body W whose supply has been resumed is conveyed to the sub-conveyance path 52. Can be transferred to the next process.

In the above-described embodiment, the configuration in which the bottle can detection unit 55 is provided in the fourth main transport path 51d is shown, but it may be provided in the discharge path 53, and may be provided in the fourth main transport path 51d and the discharge path 53. Also good. In particular, when the bottle can detection means 55 is disposed at the rear end of the discharge path 53 in the transport direction, it is possible to reliably suppress the molding defective product from being transported to the sub-transport path 52.
Furthermore, when the apparatus 10 is restarted, the case where all the non-defective bottle cans 1 formed at the time of the previous manufacturing have been transported from the transport means 50 to the next process is shown, but the bottle cans 1 remain on the transport means 50. It is also applicable when In this case, if the conveying speed of the conveying means 50 is constant, the timer provided in the control unit 25 is operated simultaneously with the resumption of manufacturing, and the switching means 56 is changed over the sub-conveying path 52 and the fourth main conveying path for a predetermined time. By switching so as to communicate with 51d, all the remaining non-defective bottle cans 1 are transported to the next process through the sub transport path 52. Thereafter, the switching means 56 is switched so that the discharge path 53 and the fourth main transport path 51d communicate with each other, and the defective molding product that has been transported is set in advance by the bottle can detection means 55 or the number data After the defective molding is counted, the switching means 56 is switched again so that the sub-transport path 52 and the fourth main transport path 51d communicate with each other. Thus, the defective molding is conveyed to the discharge path 53 and discharged, and the remaining good bottle can 1 and the bottomed cylindrical body W whose supply has been resumed are molded and formed. The bottle can 1 is conveyed to the sub conveyance path 52 and can be conveyed to the next process.

Furthermore, in the above embodiment, the supply of the bottomed tubular body W to the work holding part 30 is controlled by moving the stopper pin of the stopper part of the work supply means 33 forward and backward. For example, the rotational movement of the workpiece suction portion 33a may be controlled based on the detected value of the rotational speed of the second motor 23 by the encoder 24. That is, when the forward movement speed of the tool holding part main body 41 becomes equal to or higher than the steady speed, the work suction part 33a may be rotated to synchronize with the intermittent rotation of the work holding part main body 31.
Further, instead of the switching means 56 having the pin member 56a and the plate portion 56b, by blowing air to the bottle can 1 on the fourth main transport path 51d, the sub transport path 52 or the discharge of the bottle can 1 is discharged. The conveyance to the path 53 may be switched.

  It is possible to improve the production efficiency in the initial stage of restarting the production of bottle cans from the stopped state.

It is the upper surface schematic of the manufacturing apparatus of the bottle can shown as one Embodiment of this invention. It is a X1-X1 line arrow side view of the manufacturing apparatus of the bottle can shown in FIG. It is a block diagram which shows a part of drive part of the manufacturing apparatus of the bottle can shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottle can 10 Bottle can manufacturing apparatus 22 Drive part 24 Encoder (speed measurement means)
DESCRIPTION OF SYMBOLS 25 Control part 30 Work holding part 33 Work supply means 34 Extraction means 40 Tool holding part 42 Forming tool 50 Conveyance means 51 Main conveyance path 52 Sub conveyance path 53 Discharge path 55 Bottle can detection means 56 Switching means W Bottomed cylindrical body

Claims (3)

Connected to at least one of the work holding part for holding the bottomed cylindrical body, the tool holding part provided with a forming tool for forming the bottomed cylindrical body, and the work holding part and the tool holding part. And a work supply means for supplying the bottomed cylindrical body to the work holding part, wherein the work holding part is provided with the bottomed cylinder. The shaped body is configured to hold the opening so that the opening faces the forming tool. When the tool holding portion is moved relatively close to the work holding portion by the driving portion, the presence is caused by the forming tool. A bottle can manufacturing apparatus configured to mold a bottom cylindrical body into a bottle can,
A speed measuring means for measuring a speed at which the work holding unit and the tool holding unit move closer to each other is provided,
An apparatus for manufacturing a bottle can, comprising: a control unit that controls supply of the bottomed cylindrical body by the work supply unit based on a measurement result of the speed measurement unit. In the bottle can manufacturing apparatus according to claim 1,
A take-out means for taking out the molded bottle can from the work holding part; and a carrying means for carrying the bottle can taken out by the take-out means,
The transport means is connected to a main transport path for receiving and transporting the bottle can from the take-out means, and a sub-transport path for transporting a non-defective bottle can to the next process, connected to the front end in the transport direction of the main transport path. And at least one of the discharge path and the main transport path is provided with a bottle can detecting means for detecting the presence or absence of the defective bottle can, At the front end in the transport direction of the main transport path, a switching means for switching the transport of the bottle can to the sub-transport path or the discharge path is provided,
2. The bottle can manufacturing apparatus according to claim 1, wherein the control unit is configured to switch the switching unit based on at least a detection result of the bottle can detection unit. A bottle can is manufactured using the bottle can manufacturing apparatus of Claim 1 or 2, The bottle can manufacturing method characterized by the above-mentioned.

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