JP4047108B2 - Resin sheet trimming device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a trimming apparatus for a resin sheet for punching out or cutting out many molded products formed on a resin sheet by a thermoforming apparatus.
[0002]
[Prior art]
A conventional general resin sheet trimming apparatus includes a trimming machine for punching or cutting a molded product formed on a resin sheet by a cutting means such as a die and a punch, and a continuous continuous form fed from a thermoforming apparatus. Sheet guide means for guiding the resin sheet to the trimming machine in a substantially horizontal direction, feeding means for intermittently carrying out the trimmed resin sheet (scrap sheet) from the trimming machine, and a camel back disposed above them It is composed of Further, the sheet guide means is arranged on the resin sheet inlet side with respect to the trimming machine, and the feeding means is arranged on the resin sheet outlet side.
[0003]
In the trimming device, in consideration of the difference in form such as the size and height of the molded product formed on the upper side or the lower side of the resin sheet, the resin sheet fed from the thermoforming device is directly sheet guide means. The method of carrying in the trimming machine through the sheet and performing the trimming process, and the method of carrying in the trimming machine through the sheet guide means with the resin sheet placed on the camel bag and reversed, and the trimming process. Either one is adopted. However, in the former and latter trimming processing methods, the traveling direction of the resin sheet is completely opposite. Therefore, when switching from the former to the latter method or from the latter to the former method, the entire trimming machine is manually performed each time. Must be rotated 180 degrees to change the sheet guide means to face the upstream side of the resin sheet in the traveling direction. However, because the weight of the trimming machine as a whole is large and the incidental facilities such as wiring are handled, the direction changing operation is troublesome and requires a lot of labor and time.
[0004]
In view of this, the present applicant has proposed a reversing device for automating the direction change of the trimming machine in Japanese Patent Laid-Open No. 2000-343158. In addition, when the sheet guide means and the feeding means are configured independently of the trimming machine, and without changing the orientation while the trimming machine is installed, the arrangement is reversed to use the camel back and when not using it. In any of the methods, a trimming apparatus that can be easily handled with little effort is registered as Japanese Patent No. 2747466.
[0005]
[Problems to be solved by the invention]
In the “automatic reversing device for trimming machine” disclosed in Japanese Patent Application Laid-Open No. 2000-343158, it is possible to quickly change the direction by operating the push button device. In some cases, this structure cannot be adopted. Regarding the “resin sheet trimming device” described in the patent publication of Japanese Patent No. 2747466, it can be said that it is inevitable that at least the sheet guide means and the feeding means are switched when the camel bag is used. .
[0006]
The object of the present invention is to eliminate the need to change related equipment while the trimming machine is installed, and can perform any trimming process quickly and smoothly regardless of whether a camel bag is used or not. The object is to provide a trimming device for a resin sheet.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 includes a sheet transfer means for intermittently transferring a continuous resin sheet fed from a molding apparatus in a substantially horizontal direction, and a molding formed on the resin sheet. A trimming apparatus for resin sheets comprising a trimming machine for punching or cutting an article by a cutting means, and a camel back disposed above them.
The sheet transporting means is linked to the trimming operation of the trimming machine, guides the resin sheet before trimming processing and carries it into the trimming machine, a lifting mechanism that allows the resin sheet to move up and down, and a feed mechanism for unloading the resin sheet after trimming process from the trimming machine, and, respectively provided at two positions on the upstream side in the traveling direction of the resin sheet and the downstream side with respect to the trimming machine mounted, whereas The sheet transfer means carries the resin sheet fed from the molding apparatus into the trimming machine without using the camel bag, and the other sheet transfer means receives the resin sheet fed from the molding apparatus in the camel. It is configured to be carried into the trimming machine in a state of being placed on the back and inverted.
[0008]
In order to achieve the same object, the invention described in claim 2 is the resin sheet trimming apparatus according to claim 1, wherein the height of a molded product formed on the lower side of the resin sheet is the sheet transfer. If the size is smaller than the predetermined size regulated by the sheet guide of the means or the die of the trimming machine, the resin sheet fed from the molding apparatus is carried into the trimming machine via one sheet transfer means without using the camel bag. On the other hand, when the height of the molded product formed on the lower side of the resin sheet is larger than a predetermined dimension regulated by the sheet guide of the sheet transport means or the die of the trimming machine, the molded product is fed out from the molding device. The resin sheet is placed on the camel bag and reversed so that the resin sheet is carried into the trimming machine via the other sheet transfer means. And it is characterized in and.
[0009]
[Action and effect of the invention]
(Invention of Claims 1 and 2)
For example, a molded product is formed on the lower side of the resin sheet, and the height of the molded product is smaller than a predetermined dimension (in other words, the molded product interferes with the sheet guide of one sheet transfer means or the die of the trimming machine. If there is no fear, the resin sheet fed from the molding apparatus is set on one sheet transfer means without using the camel bag .
Thus, in a state where the sheet guides of both sheet transfer means are raised, the resin sheet is carried into the trimming machine by the feeding mechanism and then lowered together with the sheet guide. As a result, the molded product is placed on the die of the molding means, and is subjected to punching (or cutting) processing by the lowering operation of the punch (or push cutting blade) provided in a pair with the die. Next, when the sheet guides of both sheet transfer means are raised and returned to the original height, the trimmed resin sheet (scrap sheet) is transferred by one pitch to the trimming machine die by the feed mechanism. Then, the sheet guide is lowered again, and the next molded product is placed on the die.
By repeating this series of operations, the trimming process is continuously performed.
[0010]
Further, a molded product is formed under the resin sheet, and the height of the molded product is larger than a predetermined dimension (in other words, the molded product interferes with the sheet guide of one sheet transfer means or the die of the trimming machine. If there is a concern), the resin sheet fed from the molding apparatus is set in the camel bag.
In this case, since the resin sheet is placed on the camel bag and reversed, the molded product is carried into the trimming machine via the other sheet transporting means in the state of being on the upper side.
Since the subsequent operation of the trimming apparatus conforms to the contents described in the previous section, the description is omitted. In addition, about a die | dye and a punch, it is necessary to replace | exchange for what was match | combined with the form of the molded article.
[0011]
This resin sheet trimming device does not need to change the direction with the trimming machine installed and fixed, and it is not necessary to change related equipment, etc. Trimming with or without a camel back Processing operations can be performed quickly and smoothly.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view showing the entire trimming apparatus, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an explanatory view showing trimming processing of a molded product using a punch and a die.
[0013]
As shown in FIG. 1, a trimming apparatus for a resin sheet according to the present invention includes a trimming machine 10 that punches a peripheral portion of a molded product a formed on a lower side of a continuous resin sheet S by a cutting means, and a thermoforming (not shown). One sheet transfer means 20A and the other sheet transfer means 20B for intermittently transferring the resin sheet S fed from the apparatus to the trimming machine 10 in a substantially horizontal direction, and a camel back 50 disposed above them. I have. The one sheet transporting unit 20A is disposed on the left side with respect to the trimming machine 10, and the other sheet transporting unit 20B is disposed on the right side with respect to the trimming machine 10.
[0014]
The trimming machine 10 is provided with a block-shaped bed 12 in the horizontal direction inside a portal frame 11 installed on a floor surface, and is driven by a screw feed mechanism or a crank mechanism using a ball screw and a nut body (not shown). 12 has a known structure in which a table 13 disposed to face the upper side of 12 is movable in the vertical direction. Reference numeral 14 denotes a die attached to the bed 12, and 15 denotes a cylindrical punch attached to the lower surface of the table 13. In the trimming machine 10, as shown in FIG. 3, the peripheral portion of the molded product a formed on the resin sheet S placed on the die 14 is punched out by the vertical movement of the punch 15. The trimmed molded product a is discharged and stays downward, and is provided so as to be pushed out onto the carry-out conveyor 19 by the extrusion device 18 every predetermined number.
[0015]
One sheet transfer means 20A supports the frame 21 on a fixed shaft 17 provided on one side surface 10a of the trimming machine 10 in order to facilitate the attachment / replacement operation of the die 14 and punch 15 and the like. It is provided so that it can be opened and closed. The frame 21 is provided with a lifting mechanism 25 for the seat guide 30.
[0016]
The elevating mechanism 25 has four screw shafts 26 screwed into nut bodies (not shown) that are rotatably provided on the frame 21, and pulleys (not shown) fixed to the nut bodies and a servo motor 27. A seat guide attached to the upper end of the screw shaft 26 by passing a timing belt (not shown) around a pulley fixed to the drive shaft and rotating the nut bodies simultaneously by driving the servo motor 27. It is comprised so that 30 may be moved to an up-down direction.
[0017]
The sheet guide 30 is provided with a plurality of strip-like guide plates 32 arranged in parallel on a frame body 31, and an elongated sliding piece 33 is pressed on the upper surface of each guide plate 32 by spring elasticity. Further, a feed mechanism 35 for intermittently transferring the continuous resin sheet S is provided on both sides of the frame 31. The feeding mechanism 35 includes a driving roller 36 for supporting the lower surface of the side edge of the resin sheet S, a pressing roller 37 for pressing the upper surface of the resin sheet, and a servo motor (rotatingly driving the driving roller 36). (Not shown).
[0018]
Thus, this one sheet transfer means 20A guides the resin sheet before trimming inserted between the guide plate 32 and the sliding piece 33 and carries it into the trimming machine 10, or receives the resin sheet after trimming. The feed mechanism 35 is driven to rotate out of the trimming machine 10.
[0019]
The other sheet transfer means 20B is provided so as to be openable and closable in the lateral direction with the frame 21 supported by the fixed shaft 17 provided on the other side surface 10b of the trimming machine 10. The sheet transfer unit 20B has substantially the same configuration as the one sheet transfer unit 20A described above. Therefore, for the same components, the reference numerals used for the description of the one sheet conveying means 20A are used as they are, and a detailed description is omitted.
[0020]
When the resin sheet S is intermittently transferred, the feed mechanism 35 of the other sheet transfer unit 20B on the resin sheet side after the trimming process (downstream in the traveling direction of the resin sheet) (or the feed of one sheet transfer unit 20A) It is common to operate the mechanism 35).
[0021]
The camel bag 50 has a substantially chevron shape, and a lower part 52 near one side 51a of the main body 51 is mounted on the top part 10c of the trimming machine 10 and fixed. Reference numeral 53 denotes an inlet side guide frame that is pivotally supported on one side 51a of the main body 51 and is provided to be rotatable in the vertical direction. The inlet side guide frame 53 is provided with a feed mechanism 55 for feeding the resin sheet S backward. As shown in FIG. 1 (b), the camel bag 50 transfers the resin sheet S fed from the thermoforming device from the inlet side guide frame 53 to the main body 51 so that the vertical position of the molded product a is set. It is provided so as to be guided to the other sheet conveying means 20B in the inverted state.
[0022]
Next, the operation of the resin sheet trimming apparatus and how to handle it will be described.
(A) When the molded product a is formed below the resin sheet S and the height of the molded product a is smaller than a predetermined dimension, the resin sheet S fed from the molding apparatus is transferred to one sheet transfer means. Set to 20A. In this case, one sheet transfer unit 20A is located on the upstream side, and the other sheet transfer unit 20B is located on the downstream side.
[0023]
In the embodiment, the height of the molded product a is about 30 mm as a guide. If the height is larger than that, the molded product a interferes with the sheet guide 30 of one sheet transfer means 20A or the die 14 of the trimming machine 10. Therefore, a method using a camel bag 50 described later is adopted.
[0024]
With the sheet guides 30 and 30 of both sheet transfer means 20A and 20B raised, the resin sheet S is carried into the trimming machine 10 by the operation of the feed mechanism 35 of the other sheet transfer means 20B, and the sheet guides 30 and 30 Is lowered with. Thereby, the molded product a formed on the resin sheet S is placed on the die 14. Next, when punching is performed by the lowering operation of the punch 15, the sheet guides 30 and 30 are raised by the operation of the elevating mechanism 25 and returned to the original height. The trimmed resin sheet S is transferred to the die 14 by one pitch by the operation of the feed mechanism 35 of the other sheet transfer means 20B. Then, the sheet guides 30 and 30 are lowered again to place the next molded product a on the die 14.
By repeating this series of operations, the trimming process is continuously performed.
[0025]
(B) When the molded product a is formed on the lower side of the resin sheet S and the height of the molded product a is larger than a predetermined dimension, the resin sheet S fed from the molding apparatus is set in the camel bag 50. To do. In this case, the other sheet transfer means 20B is on the upstream side, and one sheet transfer means 20A is positioned on the downstream side.
Thus, since the resin sheet S is placed on the camel bag 50 and reversed, the molded product is carried into the trimming machine 10 via the other sheet transfer means 20B with the molded product placed from the lower side to the upper side. Since the subsequent operation of the trimming apparatus conforms to the contents described in the previous section, the description is omitted.
[0026]
As described above, according to this resin sheet trimming apparatus, it is not necessary to change the direction while the trimming machine is installed and fixed, and any trimming processing work when the camel back is used or not is used. There is an advantage that it can be performed quickly and smoothly.
[Brief description of the drawings]
FIG. 1 is a side view showing the entire trimming apparatus. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. FIG. 3 is an explanatory view showing trimming processing of a molded product using a punch and a die.
S ... Resin sheet a ... Molded product 10 ... Trimming machine 12 ... Bed 13 ... Table 14 ... Die 15 ... Punch 20A ... One sheet transfer means 20B ... The other sheet transfer means 25: lifting mechanism 30 ... sheet guide 32 ... guide plate 35 ... feeding mechanism 50 ... camel back

Claims (2)

A sheet transfer means for intermittently transferring a continuous resin sheet fed from a molding apparatus in a substantially horizontal direction, a trimming machine for punching or cutting a molded product formed on the resin sheet by a cutting means, and above them A trimming device for a resin sheet provided with a placed camel bag,
The sheet transporting means is linked to the trimming operation of the trimming machine, guides the resin sheet before trimming processing and carries it into the trimming machine, a lifting mechanism that allows the resin sheet to move up and down, and a feed mechanism for unloading the resin sheet after trimming process from the trimming machine, and, respectively provided at two positions on the upstream side in the traveling direction of the resin sheet and the downstream side with respect to the trimming machine mounted, whereas The sheet transfer means carries the resin sheet fed from the molding apparatus into the trimming machine without using the camel bag, and the other sheet transfer means receives the resin sheet fed from the molding apparatus in the camel. resin sheet trimming apparatus characterized by being configured so as to carry the trimming machine in a state of being inverted put back When the height of the molded product formed on the lower side of the resin sheet is smaller than a predetermined dimension regulated by a sheet guide of the sheet transfer means or a die of a trimming machine, the resin sheet fed from the molding apparatus Is carried into the trimming machine via one sheet conveying means without using the camel bag, and the height of the molded product formed on the lower side of the resin sheet is the sheet guide or trimming of the sheet conveying means. When the size is larger than a predetermined size regulated by the die of the machine, the resin sheet fed from the molding apparatus is placed on the camel bag and turned over, and is carried into the trimming machine via the other sheet transfer means. The resin sheet trimming apparatus according to claim 1, wherein the trimming apparatus is configured as follows.

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