JP5430787B1 - Molding apparatus and molding method - Google Patents

Abstract

An apparatus and a method for improving the manufacturing efficiency of a molded product by automating detection of a leading edge and a trailing edge of a sheet.
A molding apparatus 1 that performs a conveyance molding process according to a shot ST1 of a continuous sheet SH1 includes a molding unit U1 that molds a sheet for each shot, and a conveyance unit that conveys the sheet in a predetermined conveyance direction passing through the molding unit. U2, the sheet detection unit U3 that detects the sheet at the upstream position P1 in the transport direction from the forming unit U1, and the start end portion is transported from the upstream position P1 in the transport direction when the sheet detection unit detects the start end of the sheet And a control means for starting the conveyance molding process later. When the trailing edge of the sheet is detected by the sheet detector, the control means stops the sheet molding after the trailing edge is conveyed in the conveying direction from the upstream position, or when the trailing edge is molded in the conveying direction from the upstream position. The sheet is conveyed in the conveyance direction at a slower standby conveyance speed after being conveyed at a conveyance speed of.
[Selection] Figure 1

Description

  The present invention relates to a forming apparatus and a forming method for forming a continuous sheet.

  2. Description of the Related Art There is known a thermoforming apparatus that draws and heats a roll-shaped thermoplastic resin sheet and forms a softened sheet with a differential pressure. In such a thermoforming apparatus, for example, a sheet heating unit, a softened sheet differential pressure forming unit, a molded sheet trimming unit, and the like are sequentially arranged, and a sheet conveying device is passed through these parts. At the start of thermoforming, including when replacing the sheet, the starting end of the sheet is manually supplied to the sheet conveying apparatus without the automatic operation of the sheet conveying apparatus, and the sheet conveying apparatus is manually operated to start the sheet. Workers in the factory are working to align the part with the molding position of the thermoforming device.

  Patent Document 1 discloses a thermoforming apparatus that thermoforms a continuous sheet with a plurality of printed patterns for each shot corresponding to a mark. This thermoforming apparatus intermittently feeds a predetermined length of one shot at a time to a forming part consisting of an upper mold and a lower mold while the side edge of the sheet is held by an endless clamp chain. A non-contact sensor for detecting a mark on a sheet is installed on the downstream side from the forming portion. During normal operation, when the mark attached to the sheet is detected by the sensor, the sheet is stopped for a certain time after being sent by a predetermined length for one shot. During the stop time, processing such as sheet thermoforming and trimming is performed. When the stop time elapses, the sheet is fed, and a series of feeding operations are sequentially repeated. When the sheet is exchanged, the next sheet is supplied to the upstream side of the conveying device so that the distance between the end portion of the previous sheet and the leading end portion of the next sheet is not too large. When the first mark of the next sheet is detected by the sensor, the sheet feeding is temporarily stopped, and the sheet is fed to a position corresponding to the remaining amount of the feeding amount of a predetermined length, and then stopped for a certain time. After the second mark is detected, the normal operation described above is performed.

Japanese Patent No. 3183336

  The operation of manually adjusting the start end of the sheet to the forming position of the thermoforming apparatus at the start of thermoforming is troublesome. The thermoforming apparatus disclosed in Patent Document 1 detects marks printed on a continuous sheet and adjusts the forming position of the sheet. Therefore, when thermoforming a continuous sheet without a mark, the starting end of the sheet is manually heated. It is necessary for the worker to perform an operation for matching the molding position of the molding apparatus. Even for a printed sheet, when the sheet is supplied for the first time, it is necessary to manually adjust the leading end of the sheet to the forming position of the thermoforming apparatus without automatically operating the sheet conveying apparatus. Further, when the mark detection sensor is installed on the downstream side from the forming portion, the sheet at the start end portion from the first detection of the mark to the position where the feeding stops is not formed. When there are many start parts which are not shape | molded, it will lead to the yield fall of a thermoformed product.

  The present invention has an object of providing a technique capable of improving the manufacturing efficiency of a molded product.

The present invention is a molding apparatus that performs a conveyance molding process according to continuous sheet shots,
A molding part for molding the sheet for each shot;
Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
A sheet detection unit for detecting a sheet at an upstream position in the transport direction from the molding unit;
Performs control to continuously convey the sheet at the conveying speed of the standby in the standby state, 1 at a conveying speed at the time of faster molding than the conveying speed during the waiting start end of the sheet is discovered by the sheet detection unit shots above, performs control Ru is conveyed to the starting end to the front Symbol conveying direction, with the manner in which this control and a control means for performing control for the conveying molding process to end.

Further, the present invention provides a molding unit that molds a continuous sheet for each shot,
Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
A sheet detection unit that detects a sheet at an upstream position in the conveyance direction from the molding unit, and a molding method for a molding apparatus that performs a conveyance molding process according to the shot of the sheet,
In the standby state continuously conveying the sheet conveyance speed at the time of standby, the sheet detecting unit one shot or at a conveying speed at the time of faster molding than the conveying speed during the waiting start end of the sheet is discovered in , is conveyed to the starting end to the front Symbol conveying direction, it performs the conveying forming process and the transport is completed, having aspects.

That is, when the sheet detection unit at the upstream position in the sheet conveyance direction from the forming unit detects the sheet, the start end is equal to or more than one shot at a conveyance speed during molding that is faster than the conveyance speed during standby. There is conveyed Previous Symbol conveying direction and the conveying is completed, conveying the molding process suitable to the shot of the sheet is performed. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.

Furthermore, the molding apparatus of the present invention includes a molded portion, and the conveying means, and the sheet detection unit, the termination portion from the terminal end of the sheet is detected by the sheet detection unit is one shot or Previous Symbol conveying direction, When Ru is conveyed with the embodiments having a control means for performing control to stop the forming of the sheet, a. Further, the molding method of the present invention, the when the termination portion from the terminal end of the sheet is detected by the sheet detection unit Ru is conveyed Previous Symbol transport direction to stop the forming of sheet, having aspects.

That is, when the end portion of the sheet is detected by the sheet detection unit from the molding section to the upstream position in the conveying direction of the sheet, one shot or the termination section Previous Symbol conveying direction, the forming of the Ru conveyed sheet Stop. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.

Furthermore, the molding apparatus of the present invention includes a molded portion, the conveying speed at the time of molding and conveying means and the sheet detecting unit, the termination portion from the terminal end of the sheet is detected by the sheet detection unit Previous Stories conveying direction in one shot or more, has a mode in which and a control unit that performs control to convey the sheet to the conveying direction at a conveying speed at the time of slow stand than the conveying speed during the forming and Ru is conveyed. Further, the molding method of the present invention, the sheet detecting unit in the termination portion from the terminal end of the sheet is detected before Symbol one shot or at a conveying speed at the time of molding the conveying direction, during the forming and Ru are conveyed The sheet is transported in the transport direction at a standby transport speed that is slower than the transport speed.

That is, when the end portion of the sheet is detected by the sheet detection unit from the molding section to the upstream position in the conveying direction of the sheet, one shot or at a conveying speed at the time of molding the termination section Previous Symbol conveying direction, is conveyed Then , the sheet is transported in the transport direction at a standby transport speed that is slower than the transport speed at the time of molding. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.

Here, the sheet | seat which can apply this invention should just be a sheet | seat which can be shape | molded, for example, a resin sheet, a plastic sheet, etc. can be used.
For the molding, thermoforming such as differential pressure molding can be used. The molding apparatus includes a molding trimming apparatus that performs trimming simultaneously.

Furthermore, the present invention provides a molding method corresponding to claims 2 to 5 , a molded product manufacturing system equipped with a molding device, a molding program, a molded product manufacturing program, a computer-readable medium storing these programs, and the like. It has the aspect of.

According to the invention which concerns on Claim 1, Claim 5 , the shaping | molding apparatus which can improve the manufacturing efficiency of a molded article can be provided.
In the invention which concerns on Claim 2, the shaping | molding apparatus which can improve the manufacture efficiency of a molded article in a shaping | molding apparatus provided with a heating part in the upstream of a conveyance direction from a shaping | molding part can be provided.
In the invention which concerns on Claim 3 , the shaping | molding apparatus which can further improve the manufacture efficiency of a molded article can be provided.
In the invention according to claim 4 , the convenience can be improved.
According to the invention which concerns on Claim 6, Claim 7 , the shaping | molding method which can improve the manufacture efficiency of a molded article can be provided.

The front view which illustrates the outline of thermoformed-product manufacturing system SY1. The top view which illustrates conveyance means U2. FIG. 3 is a plan view illustrating a main part of the molding apparatus 1. (A) is a vertical sectional view schematically illustrating the molding part U1 when the molding die 73 is at the separation position P11, and (b) schematically illustrates the trimming part U6 when the mold 83 is at the separation position P22. FIG. The block diagram which illustrates the outline of the electric circuit structure of the thermoformed product manufacturing system SY1. The figure which illustrates setting input screen SC1. The flowchart which illustrates a shaping | molding process. The flowchart which shows the shaping | molding process of a modification. The figure which illustrates typically sheet conveyance at the time of sheet supply. The figure which illustrates typically sheet conveyance at the time of sheet end. The flowchart which shows the shaping | molding process of a modification. The figure which illustrates typically sheet conveyance at the time of sheet supply of a comparative example. The figure which illustrates typically sheet conveyance at the time of the end of a sheet of a comparative example.

  Embodiments of the present invention will be described below. Of course, the embodiment described below is merely illustrative of the present invention, and all the features shown in the embodiment are not necessarily essential to the solution of the invention.

(1) Outline of molded product manufacturing system including molding device:
First, an outline of an example of a molded article manufacturing system including the molding apparatus 1 will be described with reference to FIGS. 1 to 3, the direction from left to right is the conveyance direction D1 of the sheet SH1, the left side is the upstream D1U in the conveyance direction D1, and the right side is the downstream D1L in the conveyance direction D1. The figures may not be consistent for the sake of clarity.
In the thermoformed product manufacturing system SY1 illustrated in FIG. 1, each part is controlled by the control panel 100, and the formed product PR1 is formed from the sheet SH1. This system SY1 is an after trim type in which a trimming portion U6 is disposed after a molding portion U1. Of course, the molded product manufacturing system may be a simultaneous punching type in which the molded part has a trimming function. The main part of the structure of the thermoformed product manufacturing system SY1 can be formed of metal, for example.

  The sheet supply unit 21 feeds the continuous sheet SH1 from the roll SH0. Sheet SH1 shown in FIGS. 2 and 3 is a continuous resin sheet.

  As the sheet SH1, a moldable sheet such as a resin sheet such as a thermoplastic resin sheet, a thermoplastic sheet other than a resin exhibiting thermoplasticity, or paper can be used. The resin sheet may be a resin sheet made of only a resin such as a thermoplastic resin, a sheet made of a material in which an additive such as a filler is added to the resin, a single layer sheet, or a laminated sheet laminated with different materials. Good. As the material of the sheet SH1, polyethylene, polypropylene, or the like can be used. Further, the sheet SH1 may be in the form of a sheet or film, and can have various thicknesses such as about 1 to 2 mm, about 0.25 to 1 mm, and the like, and is a thick sheet of about 3 mm or more. Alternatively, a film of about 0.25 mm or less may be used. The molded product PR1 formed from the sheet SH1 includes a container such as a food container, a component such as an inner box or an operation panel of a home appliance, and the like.

  A sheet detection sensor SN1 (sheet detection unit U3) described later is installed between the sheet supply unit 21 and the heating unit U5, that is, at an upstream position P1 in the transport direction D1 from the forming unit U1.

  A heating unit U5 provided on the upstream side D1U in the transport direction D1 from the forming unit U1 includes a heater 30, and preheats the sheet SH1 transported by the transport unit U2. The length of the heater 30 in the transport direction D1 is set to be equal to or longer than the length of the molding shot ST1 in order to reduce uneven heating. When the thermoplastic sheet is heated, for example, it is radiatively heated above the temperature at which the sheet is softened without melting the sheet. Of course, the heating unit may contact-heat the sheet, or may heat it with hot air or the like. In the heating unit U5 shown in FIG. 1, the heaters 30 are arranged on the upper side and the lower side of the sheet SH1, but either one may be omitted.

The molding unit U1 can be constituted by, for example, a molding mechanism 70 shown in FIG. 4A and a control panel 100 shown in FIG. The tables 71 and 72 are moved closer to and away from each other between the set separation position and the proximity position by the molding table drive mechanism. As a result, the molding die 73 provided under the upper table 71 moves up and down between the separation position P11 and the proximity position P13, and the clamp 74 provided on the lower table 72 moves between the separation position P12 and the proximity position P14. Go up and down between. Each of the molds 73 is a female mold that is recessed upward, but may be a male mold that is convex downward or a mold that is uneven. Further, the mold may be disposed on the lower side and the clamp may be disposed on the upper side. The differential pressure supply mechanism 75 supplies differential pressure from the differential pressure supply hole 73b to the molding surface 73a. When the sheet SH1 is heated and softened for one shot while the mold 73 and the clamp 74 are separated from each other, the forming mechanism 70 brings the mold 73 and the clamp 74 close to each other and the negative pressure is supplied by the differential pressure supply mechanism 75. Is caused to act on the differential pressure supply hole 73b to bring the sheet SH1 into close contact with the molding surface 73a. When the forming mechanism 70 separates the mold 73 and the clamp 74, the forming sheet SH2 is unloaded from the forming mechanism 70 in a state of being connected to the sheet SH1, and is loaded into the trimming unit U6. At this time, the sheet SH1 of the next shot is carried into the forming mechanism 70.
In addition to the above-described vacuum forming, the sheet may be formed by differential pressure forming such as pressure forming or pressure forming, press forming, forming other than thermo forming, and the like. The compressed air vacuum forming is a differential pressure forming using both compressed air and vacuum. Thermoforming includes differential pressure molding and press molding.

The trimming unit U6 exhibits an in-station trimming function, for example, with the trimming mechanism 80 shown in FIG. 4B and the control panel 100 shown in FIG. The tables 81 and 82 are moved closer to and away from each other between the set separation position and the proximity position by the trimming table driving mechanism. As a result, the die 83 and the cutting edge 84 provided on the lower table 82 are moved up and down between the separation position P22 and the proximity position P24, and the receiving member 85 provided under the upper table 81 is in proximity to the separation position P21. It moves up and down between position P23. Each mold 83 is convex upward, but may have a concave shape or an uneven shape. Further, the cutting blade may be arranged on the upper side and the receiving member may be arranged on the lower side, or the mold may be arranged on the upper side. Each cutting blade 84 can be, for example, a Thomson blade, and has a cutting edge facing the receiving member 85 around each die 83. When the molding sheet SH2 for one shot is loaded with the mold 83 and the receiving member 85 separated from each other, the trimming mechanism 80 places the molding sheet SH2 on each mold 83 by bringing the mold 83 and the receiving member 85 close to each other. Then, the molded sheet SH2 that contacts the receiving member 85 around the predetermined number of molded products PR1 is cut by the cutting blade 84. When the trimming mechanism 80 separates the mold 83 and the receiving member 85, the scrap sheet SH3 is unloaded from the trimming mechanism 80 in a state where the scrap sheet SH3 is connected to the molded sheet SH2, and is loaded into the scrap collecting unit 22, and the molded product PR1 for one shot. Is taken out of the mold 83 by the suction box 41 and carried into the product take-out unit 40. At this time, the molded sheet SH2 of the next shot is carried into the trimming mechanism 80.
The trimming mechanism is a device that presses the cutting blade against the receiving member to cut the formed sheet, a device that punches the formed sheet with the cutting blade around the mold, and the upper blade and the lower blade that are in sliding contact with each other. Devices for punching out, etc. are included.

The transport unit U2 illustrated in FIG. 2 includes a pair of holding and transporting devices 10 and 10 that are arranged symmetrically with respect to the sheets SH1 to SH3. Each holding and conveying device 10 includes a chain 11, sprockets 12 and 13, a servo motor 14, and an endless material 15.
The chain 11 is a metal endless chain (endless chain) in which a plurality of links are connected. The chain 11 is hung on the sprockets 12 and 13 and arranged so as to move around in a horizontal plane. The driving force of the servo motor 14 is transmitted to the downstream sprocket 13 via the endless material 15. The chain 11 is provided with a holding mechanism that releasably holds the edge SH11 in the width direction D2 of the sheets SH1 to SH3. The chain 11 shown in FIG. 2 is a so-called grip chain or clamp chain, and releasably holds the sheet edge portion SH11 while rotating. In the chain 11, the sheet SH <b> 1 to SH <b> 3 side moves in the conveyance direction D <b> 1, and the portion on the outer side in the width direction of the sheets SH <b> 1 to SH <b> 3 moves in the return direction opposite to the conveyance direction. Accordingly, the transport unit U2 grips the sheet edge portions SH11 and SH11 from the upstream side D1U that is in front of the heating unit U5 to the downstream side D1L that is after the trimming unit U6, and transports the sheets SH1 to SH3 in the transport direction D1. .

  The conveying means may be a roller or the like.

(2) Outline of molding apparatus and molding method:
The forming apparatus illustrated in FIGS. 1 to 5 includes basic elements U1 to U4 and performs a conveyance forming process in accordance with a shot ST1 of a continuous sheet SH1. This conveyance forming process is a process for forming the sheet SH1 while conveying the sheet SH1 intermittently or continuously. Note that the molded sheet SH2 and the scrap sheet SH3 are also included in the sheet SH1.

  The forming unit U1 is a processing unit that causes the mold 73 to act on the sheet SH1, and forms the sheet SH1 for each shot ST1. The transport unit U2 transports the sheet SH1 in a predetermined transport direction D1 that passes through the forming unit U1. The sheet detection unit U3 detects the sheet SH1 at the upstream position P1 in the transport direction D1 from the forming unit U1. When the sheet detection unit U3 detects the start end SH5 of the sheet SH1, the control unit U4 performs control to start the conveyance molding process after conveying the start end SH5 from the upstream position P1 in the conveyance direction D1. Further, the control unit U4 performs control to stop the forming of the sheet SH1 after the terminal end SH6 of the sheet SH1 is detected by the sheet detecting unit U3 and is conveyed in the conveying direction D1 from the upstream position P1. Do. Further, when the trailing end SH6 of the sheet SH1 is detected by the sheet detection unit U3, the control unit U4 performs the molding after the trailing end SH6 is conveyed from the upstream position P1 to the conveyance direction D1 at the conveyance speed V2 at the time of molding. Control is performed to transport the sheet SH1 in the transport direction D1 at a standby transport speed V1 (0 <V1 <V2) that is slower than the transport speed V2. The conveyance speeds V1 and V2 when the sheet is conveyed intermittently are constant-speed conveyance speeds excluding the stop period and the acceleration / deceleration period, and are fixed when the conveyance speed during the constant-speed period varies. The average of the conveyance speed during the high speed period. When there is a change in the conveyance speed when the sheets are continuously conveyed, V1 and V2 are set as the average of the conveyance speed.

(3) Specific example of molding apparatus:
The forming apparatus 1 shown in FIGS. 1 to 5 includes elements U1 to U6, and performs thermoforming when the sheet SH1 is intermittently conveyed at the conveyance speed V2 during forming and the conveyance of the sheet SH1 is stopped. In this case, the conveyance molding process is a process of repeatedly conveying the sheet SH1 in the conveyance direction D1 in units of shots ST1 and molding the sheet SH1 when stopped. The main part of the structure of the forming apparatus 1 can be made of, for example, metal.

  The sheet detection unit U3 detects the presence or absence of the sheet SH1 at the upstream position P1 in the transport direction D1, for example, for one shot (L1) or more from the forming unit U1 (starting end AR1s of the shot range AR1). When the sheet detection unit U3 cannot be provided immediately before the molding unit U1 due to the presence of the heating unit U5, for example, two shots (2 × L1) or more from the molding unit U1 (starting end AR1s) for three shots (3 × L1) The sheet detection unit U3 is provided at an upstream position such as above. For example, when the detection state of the sheet detection unit U3 is switched from the absence of a sheet to the presence of a sheet, the start end SH5 of the sheet SH1 is detected. Further, when the detection state of the sheet detection unit U3 is switched from the presence of the sheet to the absence of the sheet, the end portion SH6 of the sheet SH1 is detected. Therefore, the start end portion SH5 and the end portion SH6 can be detected by the same sheet detection unit U3.

  In FIG. 3, a pair of sheet detection sensors SN1 and SN1 are disposed in the vicinity of both edge portions SH11 and SH11 of the sheet at the upstream position P1 within the shot interval L1 from the heating unit U5 in the conveyance direction D1, for example. It is shown that it is provided as. The sheet detection sensor SN1 indicates whether or not the sheet SH1 has been detected by, for example, irradiating the sheet SH1 with light such as visible light and detecting the difference in reflected light amount between the background color and the sheet color in a non-contact manner. A detection signal is generated. The sheet detection unit may be a non-contact sensor such as a transmissive photoelectric proximity switch, a color meter, a digital camera, or a contact sensor in addition to such a reflective photoelectric proximity switch.

  In addition, after heating the sheet SH1 to the target temperature by the heating unit U5, the sheet detecting unit is installed in a narrow space between the heating unit U5 and the forming unit U1 so that the sheet SH1 is quickly formed by the forming unit U1 on the downstream side. hard. On the other hand, since it is easy to provide a wide space upstream from the heating unit U5 in the transport direction D1, it is easy to install the sheet detection unit. In addition, when the end of the sheet is detected by the sheet detection unit, there is a possibility that the end of the sheet passes through the start end of the shot range, so that a molded product cannot be formed over the entire shot range. May be performed. Therefore, the sheet detection sensor SN1 of the forming apparatus 1 is installed at the upstream position P1 in the transport direction D1 from the heating unit U5.

  As in the setting input screen SC1 illustrated in FIG. 6, the input unit U9 receives setting input of the interval L1 of the shot ST1 in the input field SC2, and the number of shots N1, N2, and N3 in the input fields SC3, SC4, and SC5. Accept setting input. The shot interval L1 can be changed according to the length of the mold 73 in the transport direction D1 so that the molded product PR1 formed from the sheet SH1 can be increased as much as possible. The forming start conveyance shot number N1 is the number of shots that convey the sheet SH1 before the start of the conveyance forming process when the sheet detection sensor SN1 detects the start end SH5 of the sheet SH1. The forming stop conveyance shot number N2 is the number of shots in which the sheet SH1 is conveyed before the formation of the sheet SH1 is stopped when the end portion SH6 of the sheet SH1 is detected by the sheet detection sensor SN1. The standby shift shot number N3 is the number of shots that convey the sheet SH1 at the conveyance speed V2 at the time of forming when the end portion SH6 of the sheet SH1 is detected by the sheet detection sensor SN1. N1, N2, and N3 are integers of 1 or more.

  The setting input screen SC1 also displays recommended values NR1, NR2, and NR3 of the shot numbers N1, N2, and N3. NR1, NR2, and NR3 are integers of 1 or more.

  As shown in FIG. 9, the recommended value NR1 is the minimum value at which the molded product PR1 is formed in the entire shot range AR1 when the sheet SH1 is conveyed in shot ST1 units from the time when the start end SH5 is detected by the sheet detection unit U3. Means the number of shots. The shot range AR1 is a range in which the mold 73 contacts (acts) with the sheet SH1 in the forming portion U1. In order to form the molded product PR1 over the entire shot range AR1, it is necessary that the starting end portion SH5 of the sheet reaches at least the end portion AR1e of the shot range AR1. A quotient obtained by dividing the interval between shots ST1 by L1 (L1> 0), the distance between the start end AR1s of the shot range AR1 of the sheet SH1 in the forming unit U1 and the sheet detection unit U3 by L2 (L2> 0), and L2 by L1. NR1 = Q1 + 2 where is Q1. When N1 is set to NR1 or more, the molded product PR1 can be formed over the entire shot range AR1 by the first molding operation. When N1 is set to NR1, the molding operation can be performed efficiently. For example, when L1 = 1000 mm and L2 = 3500 mm, Q1 = 3 and NR1 = 5.

  As shown in FIG. 10, the recommended value NR2 is the maximum value at which the molded product PR1 is formed in the entire shot range AR1 when the sheet SH1 is conveyed in units of shot ST1 from the time when the end portion SH6 is detected by the sheet detection unit U3. Means the number of shots. In order for the molded product PR1 to be formed over the entire shot range AR1, the end portion SH6 of the sheet needs not to pass through the start end portion AR1s of the shot range AR1. When the quotient Q1 obtained by dividing the distance L2 between the start end AR1s of the shot range AR1 and the sheet detection unit U3 by the shot interval L1, NR2 = Q1-1. When N2 is set to NR2 or less, the molded product PR1 can be formed over the entire shot range AR1 in the final molding operation. When N2 is set to NR2, the molding operation can be performed efficiently. For example, when L1 = 1000 mm and L2 = 3500 mm, Q1 = 3 and NR2 = 2.

  As shown in FIG. 10, the recommended value NR3 is the minimum number of shots through which the sheet SH1 passes through the shot range AR1 when the sheet SH1 is conveyed in units of shot ST1 from the time when the end portion SH6 is detected by the sheet detection unit U3. means. In order for the sheet SH1 to pass through the shot range AR1, the end portion SH6 of the sheet needs to reach at least the end portion AR1e of the shot range AR1. When the quotient Q1 obtained by dividing the distance L2 between the starting end AR1s of the shot range AR1 and the sheet detection unit U3 by the shot interval L1, NR3 = Q1 + 1 is obtained. When N3 is set to NR3 or higher, the sheet SH1 can be switched from the conveyance speed V2 during molding to the conveyance speed V1 during standby after the sheet SH1 passes through the shot range AR1. When N3 is set to NR3, the molding operation can be performed efficiently. For example, when L1 = 1000 mm and L2 = 3500 mm, Q1 = 3 and NR3 = 4.

  FIG. 5 shows an example of the electric circuit configuration of the thermoformed product manufacturing system SY1 with the control panel 100 as the center. The control panel 100 controls the operation of the central control circuit 101 that controls the operation of the entire control panel, the transport control unit 111 that controls the operation of the transport unit U2, the heater control unit 112 that controls the operation of the heater 30, and the molding mechanism 70. A forming control unit 113 that controls the operation of the trimming mechanism 80, a suction box control unit 115 that controls the operation of the suction box 41, and a sheet detection signal input unit that inputs a sheet presence / absence detection signal from the sheet detection sensor SN1. 118, an information output unit 131, an operation unit 132, and the like. The control panel 100 constitutes control means U4. The conveying unit U2 constitutes the sheet conveying apparatus 2 together with the control panel 100. The heater 30 constitutes a heating unit U5 together with the control panel 100. The molding mechanism 70 constitutes the molding unit U1 together with the control panel 100. The trimming mechanism 80 forms a trimming unit U6 together with the control panel 100. The information output unit 131 and the operation unit 132 constitute input means U9.

The central control circuit 101 is a circuit in which a CPU (Central Processing Unit) 102, a ROM (Read Only Memory) 103, a RAM (Random Access Memory) 104, a timer circuit 105, a nonvolatile memory 106, and the like are connected to an internal bus. It is said that. The CPU 102 controls each part of the thermoformed product manufacturing system SY1 while using the RAM 104 as a work area based on a control program recorded in the ROM 103 or the nonvolatile memory 106.
The information output unit 131 is configured by, for example, a display, an audio output device, and a printer, and outputs various types of information indicating the operation settings of the thermoformed product manufacturing system SY1 by displaying the operation contents received from the user. . A setting input screen SC <b> 1 illustrated in FIG. 6 is a display example of the information output unit 131. The operation unit 132 includes, for example, a plurality of buttons and receives operation input from the user. When the setting input screen SC1 is displayed, the operation unit 132 receives an operation input of the shot interval L1 in the input field SC2, and receives an operation input of the number of shots N1, N2, and N3 in the input fields SC3, SC4, and SC5.

(4) Operation, action, and effect of molding apparatus:
FIG. 7 is a flowchart showing the molding process performed by the thermoformed product manufacturing system SY1. This process is performed mainly by the central control circuit 101 of the control panel 100, and is performed in parallel with other processes by multitasking.
When the molding process is started by turning on the power of the control panel 100 or the like, the control panel 100 starts energization to the heater 30 (step S102; hereinafter, description of “step” is omitted). In S104, the conveyance unit U2 is driven to control the sheet SH1 to be continuously conveyed in the conveyance direction D1 at the standby conveyance speed V1. The state in which the processes of S102 to S104 are performed is a standby state before molding. The worker may supply the sheet start end portion SH5 to the upstream side D1U of the conveying means U2 before S104 or after S104. When the starting end portion SH5 of the sheet is supplied, the sheet SH1 is fed at a slow conveyance speed V1.

  In S106, it is determined whether or not the start end SH5 of the sheet SH1 is detected by the sheet detection sensor SN1. For example, when both the detection states of the sheet detection sensors SN1 and SN1 are switched from the absence of a sheet to the presence of a sheet, it is determined that the starting end portion SH5 is detected. STEP 1 in FIG. 9 shows a state in which the start end SH5 is detected. If the start end SH5 is not detected, the process of S106 is repeated.

  When the start end SH5 is detected, the control panel 100 drives the transport unit U2 to move the sheet SH1 including the start end SH5 from the upstream position P1 for one shot ST1 at the transport speed V2 (V2> V1) at the time of molding. It is transported in the transport direction D1 and temporarily stopped (S108). STEP 2 in FIG. 9 shows a state in which the high-speed constant-size feed of S108 is performed once. In S110, it is determined whether or not the high-speed constant-size feed has been performed N1 times. This determination process can be performed based on the counting process of the molding start counter provided in the RAM 104. STEP 3 in FIG. 9 shows a state in which high-speed feeding is performed NR1-1 times when N1 = NR1. When the high-speed feed is less than NR1 times, the sheet start edge SH5 has not yet reached the terminal area AR1e of the shot range AR1. STEP 4 in FIG. 9 shows a state in which high speed feed is performed once NR. When N1 ≧ NR1, at least the starting end portion SH5 of the sheet reaches the end portion AR1e of the shot range AR1. The processing of S108 to S110 is performed N1 times.

When the high-speed feeding is performed N1 times, the forming apparatus 1 starts the conveyance forming process (S112 to S114) according to the shot ST1 of the sheet SH1. Therefore, when the sheet start edge is detected, the control panel 100 starts the conveyance forming process when conveyance of the distance N1 × L1 of the number of shots N1 is performed on the sheet SH1.
As described above, when the sheet detection unit U3 at the upstream position P1 detects the sheet start end SH5, the start end SH5 is conveyed from the upstream position P1 in the conveyance direction D1, and then the shot ST1 of the sheet SH1. The conveyance molding process in accordance with is started. For this reason, this technique can reduce useless shaping | molding operation | movement and can improve the manufacture efficiency of molded product PR1.

  In S112, the sheet SH1 in the shot range AR1 is formed. At this time, trimming processing of the molded sheet SH2 may be performed. This trimming process may be started after the set number of shots from the start of the molding process, whether it is an after trim type or a simultaneous removal type. STEP 5 in FIG. 9 shows that the molded product PR1 is formed at the position of the shot ST1 in the molding unit U1. In S114, the sheet SH1 is transported in the transport direction D1 and temporarily stopped. In S116, it is determined whether or not the end portion SH6 of the sheet SH1 is detected by the sheet detection sensor SN1. For example, when both the detection states of the sheet detection sensors SN1 and SN1 are switched from the presence of the sheet to the absence of the sheet, it is determined that the terminal portion SH6 is detected. When the terminal portion SH6 is not detected, the conveyance molding process (S112 to S114) is repeated. STEP 6 in FIG. 9 shows that the molded product PR1 is formed at the position of the shot ST2 on the downstream side in the transport direction D1 from the molding unit U1, and the molded product PR1 is formed at the position of the shot ST1. ing.

  When the end portion SH6 is detected, the sheet SH1 in the shot range AR1 in the forming unit U1 is not formed, so the forming apparatus 1 first forms the sheet SH1 in the shot range AR1 (S118). At this time, trimming processing of the molded sheet SH2 may be performed. STEP 11 in FIG. 10 shows a state in which the end portion SH6 is detected, and STEP 12 shows a state in which the sheet SH1 in the shot range AR1 is formed. The forming apparatus 1 stops the forming of the sheet SH1 after the transport forming process (S120 to S122) according to the shot ST1 of the sheet SH1 is performed. In S120, the sheet SH1 is transported in the transport direction D1 and temporarily stopped. In S122, the sheet SH1 in the shot range AR1 is formed. At this time, trimming processing of the molded sheet SH2 may be performed. The after trim type trimming process may end after the set number of shots from the end of the molding process. In S124, it is determined whether or not the transport molding process (S120 to S122) has been performed N2 times. This determination process can be performed based on the count process of the molding stop counter provided in the RAM 104. STEP 13 in FIG. 10 shows a state in which the conveyance molding process is performed twice NR and the molded product PR1 is formed in the last shot ST3. When N2 ≦ NR2, at least the end portion SH6 of the sheet does not pass through the start end AR1s of the shot range AR1. The processing of S120 to S124 is performed N2 times. Therefore, when the sheet end portion is detected, the control panel 100 stops the forming of the sheet SH1 after the sheet N1 is conveyed by the distance N2 × L1 of the number of shots N1 and the sheet SH1 is formed.

  As described above, when the sheet end portion SH6 is detected by the sheet detection unit U3 at the upstream position P1, the conveyance molding process stops after the end portion SH6 is conveyed from the upstream position P1 in the conveyance direction D1. . For this reason, this technique can improve the yield of the molded product PR1, and can improve the manufacturing efficiency of the molded product PR1. Further, since the sheet end portion SH6 can be detected by the sheet detection unit capable of detecting the sheet start end portion SH5, the present technology can reduce the number of parts of the forming apparatus.

  When the end portion SH6 is detected, the forming apparatus 1 causes the sheet at the standby transport speed V1 (V1 <V2) after the end portion SH6 is transported from the upstream position P1 to the transport direction D1 at the transport speed V2 at the time of molding. SH1 is transported in the transport direction D1. When the conveyance molding process (S120 to S122) is performed N2 times, the molding apparatus 1 first conveys the sheet SH1 in the conveyance direction D1 and temporarily stops the sheet SH1 (S126). STEP 14 in FIG. 10 shows a state in which the high-speed constant-size feed of S126 is performed once. In S128, it is determined whether or not the high-speed constant-size feed is performed N3-N2 times or more. This determination processing can be performed based on the count processing of the standby shift counter provided in the RAM 104. STEP 14 in FIG. 10 shows a state in which high-speed feeding is performed NR3-1 times from the time when the end portion of the sheet SH1 is detected when N3 = NR3. When the high-speed feed is less than NR3 times, the sheet end portion SH6 has not yet reached the end portion AR1e of the shot range AR1. STEP 5 in FIG. 10 shows a state in which high speed feeding is performed NR3 times. When N3 ≧ NR3, at least the end portion SH6 of the sheet reaches the end portion AR1e of the shot range AR1. The processing of S126 to S128 is performed N3-N2 times when N3> N2.

When the high-speed feeding is performed N3-N2 times or more, the control panel 100 returns the process to S104 and performs control to continuously convey the sheet SH1 in the conveyance direction D1 at the conveyance speed V1 during standby. Accordingly, the control panel 100 detects the sheet SH1 at the standby conveyance speed V1 when the conveyance of the distance N3 × L1 of the number of shots N3 is performed at the conveyance speed V2 at the time of molding when the sheet end portion is detected. It is conveyed in the conveyance direction D1. If the sheet detection sensor SN1 detects the sheet start edge SH5 in the standby state, the conveyance molding process is resumed after N1 high-speed feeding is performed.
As described above, when the sheet end portion SH6 is detected by the sheet detection unit U3 at the upstream position P1, the end portion SH6 is conveyed from the upstream position P1 to the conveyance direction D1 at the conveyance speed V2 at the time of molding. Later, the sheet SH1 is transported in the transport direction D1 at the transport speed V1 during standby. For this reason, this technique can reduce useless high-speed feeding, and can improve the manufacturing efficiency of the molded product PR1.

  If the forming process of the modified example shown in FIG. 8 is performed, and the leading edge portion SH5 of the next sheet is still detected while the sheet trailing edge portion SH6 is detected, the leading edge portion SH5 is detected. The conveyance molding process may be restarted after N1 high-speed feeds have been performed.

  In the forming process shown in FIG. 8, another forming process is started by multitasking after the sheet end portion detection in S116 and before the high-speed constant-size feed in S120. This other molding process is also performed according to the flowchart shown in FIG. Note that S102 is changed to a process of starting energization of the heater 30 when the heater 30 is not energized. S104 is changed to a process of continuously transporting the sheet SH1 in the transport direction D1 at the standby transport speed V1 when the transport of the sheet SH1 is stopped.

For example, if the start edge portion SH5 of the next sheet is detected in S106 of another second molding process when high-speed constant-size feeding is performed in S126 of the first molding process, The high-speed sizing feed of S108 is performed in synchronization with the high-speed sizing feed of S126 in the first molding process. In S110 of the second molding process, whether or not the high-speed sizing feed of S108 has been performed N1 times from the time of detection of the sheet start end when high-speed sizing feeding is performed in S126 of the first molding process. Will be judged.
In addition, if the start end portion SH5 of the next sheet is detected in S106 of another second molding process when the transport molding process is performed in S120 to S122 of the first molding process, the second molding process is performed. The high-speed sizing feed in S108 is performed in synchronization with the high-speed sizing feed in S120 and S126 in the first molding process. In S110 of the second molding process, whether or not the high-speed constant-size feed of S108 has been performed N1 times starting from the detection of the sheet start end when the conveyance molding process is performed in S120 to S122 of the first molding process. It will be judged.

  As described above, since it is not necessary to wait for the next sheet supply until the conveyance speed V1 at the time of molding returns to the conveyance speed V1 at the time of completion of the sheet, this modification can improve the manufacturing efficiency of the molded product. It becomes.

  In addition, when a sheet | seat is detected by one sheet detection part among a pair of sheet | seat detection sensors SN1 and SN1, and a sheet | seat is not detected by the other sheet | seat detection part, you may stop a conveyance shaping process. In this case, there is a possibility that the sheet SH1 has come off from the transport unit U2. Of course, when the sheet is detected by one sheet detecting unit and the sheet is not detected by the other sheet detecting unit, Na is repeated Na times (Na is an integer of 1 or more, preferably an integer of 2 or more). You may stop.

Here, as shown in FIGS. 12 and 13, the sheet detection sensor SN <b> 9 is compared with a comparative example in which the sheet detection sensor SN <b> 9 is installed at the downstream position in the transport direction D <b> 1 from the forming unit U <b> 1. At the time of sheet supply, the start end SH5 of the sheet SH1 cannot be detected up to a downstream position where the sheet detection sensor SN9 is located as in STEP81 to STEP82 of FIG. For this reason, if the sheet SH1 is continuously conveyed at a low conveyance speed (V1) until the start end SH5 is detected, it takes a long time to start forming. Here, STEP 81 shows a state where the sheet start sensor SH5 is located at the position of the sheet detection sensor SN1 in FIG. 9, STEP 82 shows a state where the sheet start sensor SH5 is detected by the sheet detection sensor SN9, and STEP 83 is a conveyance molding. A state in which the molded product PR9 is formed in the first shot ST91 after the processing is started is shown.
If high-speed feeding is performed during standby, power consumption is wasted. If the transfer molding process is performed during standby, power consumption is further wasted.

  Further, the length of the mold 73 in the transport direction D1 is shorter than the length of the molding unit U1 in the transport direction D1, and the length of the shot range AR1 in the transport direction D1 is shorter than the length of the molding unit U1 in the transport direction D1. For this reason, in the conveyance direction D1, there is a distance from the terminal end AR1e of the shot range AR1 to the sheet detection sensor SN9. In particular, since the size of the mold 73 changes according to the type of the molded product PR9, the shot range AR1 changes, and the distance from the terminal end AR1e of the shot range AR1 to the sheet detection sensor SN9 may become longer. Therefore, a molded product is not formed on this portion of the sheet SH1, and the yield of the molded product is reduced accordingly.

  On the other hand, as shown in FIG. 9, in the present technology, since the sheet SH1 is detected at the upstream position P1, the sheet SH1 is fed at a high speed from the time when the start end SH5 of the sheet SH1 is detected. Is shortened. Further, as shown in STEP 5, since the number of sheets SH1 downstream from the first shot ST1 is small, the present technology can improve the yield of the molded product PR1. Furthermore, the present technology can reduce useless molding operations, and can improve the manufacturing efficiency of the molded product PR1.

At the end of the sheet, as shown in STEP 91 to STEP 94 in FIG. 13, it is not possible to detect the end portion SH6 of the sheet SH1 up to a downstream position where the sheet detection sensor SN9 is located. For this reason, when the sheet SH1 is conveyed and formed until the terminal portion SH6 is detected, the shot ST92 has less than one shot upstream of the last shot ST3 in which the molded product PR9 is formed in the entire shot range AR1. Nevertheless, there is a possibility that an incomplete molded product PR9 is formed. Here, STEP91 indicates a state where the sheet end portion SH6 is present at the position of the sheet detection sensor SN1 in FIG. 10, STEP92 indicates a state where the molded product PR9 is formed in the last complete shot ST3, and STEP93 indicates the remaining A state in which an incomplete molded product PR9 is formed in the shot ST92 is shown, and STEP94 shows a state in which the terminal portion SH6 has passed through the shot range AR1.
Further, even in the state of STEP 94, the sheet end portion SH6 cannot be detected, so that high-speed constant-size feeding cannot be stopped.

  On the other hand, as shown in FIG. 10, in the present technology, since the sheet end portion SH6 is detected by the sheet detection unit U3 at the upstream position P1, the position of the last complete shot ST3 can be grasped. For this reason, this technique can reduce useless shaping | molding operation | movement and can improve the manufacture efficiency of molded product PR1. Further, since the end portion SH6 can grasp a shot that passes through the shot range AR1, the present technology can speed up the transition to the standby state and improve the manufacturing efficiency of the molded product PR1. .

(5) Modification:
Various modifications can be considered for the present technology.
For example, the molded product manufacturing system may not have a product take-out unit, may not have a scrap collection unit, and may have no trimming unit.
The molding apparatus may be provided with a heating unit at a molding position or may not have a heating unit.
The number of sheet detection sensors provided on the upstream side in the conveyance direction from the forming unit may be one, or three or more.
It may be possible to selectively input whether or not to enable the above-described molding process.

  The order of the steps of the above-described processing can be changed as appropriate. For example, in the processes of FIGS. 7 and 8, the heater energization process of S102 may be performed after the low-speed continuous feed of S104, or the molding of S112 and the high-speed sizing feed of S114 may be interchanged.

As a modification of the molding process in FIGS. 7 and 8, the process of S118 to S128 may be omitted, and the process may return to the process of S104 when the sheet end portion is detected in S116. Also in this modified example, when the sheet detection unit U3 located at the upstream position P1 detects the start end portion SH5 of the sheet, the start end portion SH5 is transported from the upstream position P1 in the transport direction D1, and then the shot ST1 of the sheet SH1. The combined conveyance molding process starts. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.
Further, as a modification of the molding process of FIGS. 7 and 8, the process of S108 to S110 and S126 to S128 is not performed, and when the transfer molding process of S120 and S122 is performed N2 times, the process returns from the process of S124 to the process of S104. You may do it. Also in this modification, when the sheet end portion SH6 is detected by the sheet detection unit U3 at the upstream position P1, the conveyance molding process is stopped after the end portion SH6 is conveyed from the upstream position P1 in the conveyance direction D1. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.
Further, as a modification of the molding process of FIGS. 7 and 8, the process of S108 to S110 and S120 to S124 is not performed, and it is determined whether or not the high-speed constant feed (S126) is performed N3 times in S124. Also good. Also in this modification, when the sheet end portion SH6 is detected by the sheet detection unit U3 at the upstream position P1, the end portion SH6 is conveyed from the upstream position P1 to the conveyance direction D1 at the conveyance speed V2 at the time of molding. The sheet SH1 is transported in the transport direction D1 at the standby transport speed V1. For this reason, it becomes possible to improve the manufacturing efficiency of a molded article.

  As shown in FIG. 11, instead of the high-speed constant feed of S108 to S110 in FIGS. 7 and 8, the conveying speed at the time of forming the distance L2 between the start end AR1s of the shot range AR1 and the sheet detecting unit U3 continuously in S202. The sheet SH1 may be conveyed by V2. Thereafter, the conveyance molding process (S114, S112) is repeated. When the end portion SH6 of the sheet is detected, the conveyance forming process (S120, S122) is repeated N2 times. The same effect can be obtained by such a molding process.

The molding start conveyance shot number N1 received by the input unit U9 may be limited to the recommended value NR1 or more, or may be limited to 2 or more. In addition, even if N1 <NR1, since unnecessary molding operations are reduced, an effect of improving the manufacturing efficiency of the molded product can be obtained.
The molding end conveyance shot number N2 received by the input unit U9 may be limited to the recommended value NR2 or less. Further, even when N2> NR2, since the molding operation is automatically stopped, an effect of improving the manufacturing efficiency of the molded product can be obtained.
The standby transfer shot number N3 received by the input unit U9 may be limited to the recommended value NR3 or more, or may be limited to 2 or more. Further, even when N3 <NR3, since the state automatically shifts from the molding state to the standby state, it becomes possible to improve the manufacturing efficiency of the molded product.

It should be noted that only the basic parts U1 to U4 of the forming apparatus, such as a forming apparatus without the input means U9, a forming apparatus that sends a sheet at a conveying speed of V1 = V2, and a forming apparatus that sends a sheet at a constant speed without intermittent operation are formed. The effect that it becomes possible to improve the manufacturing efficiency of goods is acquired.
Needless to say, the above-described basic actions and effects can be obtained even with a technique that does not have the constituent requirements according to the dependent claims but includes only the constituent requirements according to the independent claims.

As described above, according to the present invention, a technique or the like that can improve the manufacturing efficiency of a molded product can be provided according to various aspects.
In addition, the configurations disclosed in the embodiments and modifications described above are mutually replaced, the combinations are changed, the known technology, and the configurations disclosed in the embodiments and modifications described above are mutually connected. It is possible to implement a configuration in which replacement or combination is changed. The present invention includes these configurations and the like.

DESCRIPTION OF SYMBOLS 1 ... Molding apparatus, 2 ... Sheet conveying apparatus,
21 ... sheet supply unit, 22 ... scrap collection unit,
30 ... heater, 40 ... product take-out part, 41 ... adsorption box,
70 ... molding mechanism, 73, 83 ... mold, 80 ... trimming mechanism,
100 ... Control panel,
AR1 ... shot range,
D1 ... Conveying direction, D1L ... Downstream side, D1U ... Upstream side, D2 ... Width direction,
P1: upstream position,
PR1 ... Molded product
SH0 ... roll, SH1 ... sheet, SH2 ... molded sheet, SH3 ... scrap sheet,
SH5 ... Start end, SH6 ... End, SH11 ... Edge,
SC1: Setting input screen,
ST1, ST2, ST3 ... shots,
SN1 ... sheet detection sensor,
SY1 ... Thermoformed product manufacturing system,
U1 ... Molding unit, U2 ... Conveying unit, U3 ... Sheet detecting unit, U4 ... Control unit,
U5 ... heating unit, U6 ... trimming unit, U9 ... input means.

Claims (7)

A molding apparatus that performs a conveyance molding process in accordance with continuous sheet shots,
A molding part for molding the sheet for each shot;
Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
A sheet detection unit for detecting a sheet at an upstream position in the transport direction from the molding unit;
Performs control to continuously convey the sheet at the conveying speed of the standby in the standby state, 1 at a conveying speed at the time of faster molding than the conveying speed during the waiting start end of the sheet is discovered by the sheet detection unit shots above, performs control Ru is conveyed to the starting end to the front Symbol conveying direction, and control means for performing control for the conveying forming process and the control is terminated, the molding apparatus having a. A heating unit for heating the sheet from the forming unit to the upstream side in the conveying direction;
The molding apparatus according to claim 1, wherein the sheet detection unit detects a sheet at an upstream position in the transport direction from the heating unit. Wherein, the sheet detecting unit in the termination portion from the terminal end of the sheet is detected before Symbol one shot or at a conveying speed at the time of molding the conveying direction, the conveying speed of the Ru is conveyed during the molding The molding apparatus according to claim 1, wherein control is performed to transport the sheet in the transport direction at a slower transport speed during standby. The control means includes input means for receiving an input of a number of shots N3 for conveying the sheet at the conveyance speed at the time of molding from the time when the end of the sheet is detected by the sheet detection unit, and the sheet detection unit performs control to convey the sheet to the conveying direction of the conveying distance of the shot number N3 from the terminal end is detected Ru performed at the transportation speed at the time of the molding to the sheet conveyance speed at the time of the standby The molding apparatus according to claim 3 . A molding apparatus that performs a conveyance molding process in accordance with continuous sheet shots,
A molding part for molding the sheet for each shot;
Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
A sheet detection unit for detecting a sheet at an upstream position in the transport direction from the molding unit;
The sheet detector at the termination section after the end of the sheet is detected before Symbol transport direction into one shot or at a conveying speed at the time of molding, at slower standby than the conveying speed during the forming and Ru are conveyed And a control unit that performs control for conveying the sheet in the conveyance direction at a conveyance speed. A molding part for molding a continuous sheet for each shot;
Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
A sheet detection unit that detects a sheet at an upstream position in the conveyance direction from the molding unit, and a molding method for a molding apparatus that performs a conveyance molding process according to the shot of the sheet,
In the standby state continuously conveying the sheet conveyance speed at the time of standby, the sheet detecting unit one shot or at a conveying speed at the time of faster molding than the conveying speed during the waiting start end of the sheet is discovered in , is conveyed to the starting end to the front Symbol conveying direction, performs the conveying forming process and the transport is completed, the molding process.   A molding part for molding a continuous sheet for each shot;
  Conveying means for conveying the sheet in a predetermined conveying direction passing through the forming unit;
  A sheet detection unit that detects a sheet at an upstream position in the conveyance direction from the molding unit, and a molding method for a molding apparatus that performs a conveyance molding process according to the shot of the sheet,
  After the end of the sheet is detected by the sheet detection unit, when the end is conveyed in the conveyance direction for one shot or more at the conveyance speed at the time of molding, the conveyance during standby is slower than the conveyance speed at the time of molding. A forming method for conveying a sheet in the conveying direction at a speed.

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