JP2001347496A - Trimming device and method by use of mandrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To trim a molded product in a precisely positioned state and accumulate punched molded products in a neatly arranged state. SOLUTION: The molding 18 molded into a resin sheet 17 is carried onto a cylindrical lower punching edge 15 fixed to a trimming device body 10, fitted and positioned to the upper end 42a of a mandrel vertically moved within the lower punching edge 15 or the outer surface of the molding after trimming accumulated on the mandrel 42 followed by trimming, and the trimmed molding 18 is successively accumulated on the mandrel 42. Accordingly, the molding 18 is matched by the upper end part 42a of the mandrel 42 or the outer surface of the other molding, and trimmed in the state precisely positioned to the lower punching edge 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a trimming device using a mandrel and a trimming method using a mandrel.

[0002]

2. Description of the Related Art Conventionally, a resin sheet for forming a resin molded article such as a container for accommodating foods, beverages, electric parts, daily necessities, pharmaceuticals, etc., and a lid of the container on a continuous resin sheet. In the line, a trimming device for cutting and separating a molded article formed by a molding device from a resin sheet is provided.

FIG. 2 is a conceptual diagram of a conventional trimming device.

The resin sheet 101 is intermittently conveyed by rotating a conveying roller 104, and a molded article 102 is formed by a molding device (not shown) arranged on the upstream side (left side in the drawing) in the conveying direction. rear,
It is sent to the trimming device. The molded product 102 has a shape that is convex upward and is formed in a plurality in the width direction of the resin sheet 101 (a direction perpendicular to the drawing).

When the molded article sensor 105 detects that the molded article 102 has reached a predetermined position, a detection signal is sent to the conveying roller controller 107 and the upper punching blade controller 108 via the sensor controller 106.
Sent to Upon receiving the detection signal, the transport roller controller 107 sends a command to the roller driving device 115 to stop the rotation of the transport roller 104, so that the molded article 102 is accurately positioned at the trimming position. Can be done.

On the other hand, the upper punching blade controller 108
Can send a command to the upper punching blade driving device 109 to move the upper punching blade 111 in the vertical direction. When the upper punching blade 111 is moved downward and engaged with the lower punching blade 112, the outer periphery of the molded article 102 positioned on the lower punching blade 112 is cut. Then, the molded article 102 is
Trimming by separating it from Therefore, since the molded article 102 is trimmed while being accurately positioned, there is no deviation in the cutting position of the molded article 102, and the shape of the outer periphery and the state of the cut surface are good.

[0007] The trimmed molded article 102 falls through the opening of the lower punching blade 112, and moves along the inner wall surface of a cylinder connected to the lower end of the lower punching blade 112. The molded product 10 that has been trimmed is slid down in a fixed posture and placed on a lifting table 114 disposed inside the cylinder.
2, ie, the punched products 113 are accumulated. In this case, the lifting table 114 is used to store the punched molded products 1 to be accumulated.
13 is gradually moved downward as the number increases, and the punched products 113 are accumulated in an aligned state.

Therefore, handling in the subsequent steps becomes easy.

Further, in order to prevent the molded product from being displaced from the trimming position, a special product guide is incorporated in the punching blade, or a projection for positioning the sheet with the molded product and the punching blade sent thereto. There is an object in which an object is formed on a punching blade.

[0010]

However, in the conventional trimming apparatus, since the molded article sensor 105 is used to position the molded article 102,
The structure and operation become complicated, and the cost and running cost of the trimming device increase. Usually, in a trimming device, one hundredth [mm] to one-tenth [m] is used.
m], positioning accuracy on the order of
In order to position the resin sheet 101 with such high precision, not only the molded article sensor 105 for detecting the position of the molded article 102 but also the transport roller 104, the roller driving device 115, and the transport roller controller 107 have high precision. There is a need.

The transport roller 104 is provided on the resin sheet 1.
Although the sheet is conveyed across both ends of the resin sheet 101, the thickness of the both ends of the resin sheet 101 is often not uniform or wavy. In this case, even if the rotation of the transport roller 104 is constant, the resin sheet 10
1 is not constant.

In addition, the conveying speed at both ends of the resin sheet 101 may be different, and the position of the molded article 102 may be shifted from the trimming position.

As described above, the conveying speed of the resin sheet 101 is not constant, or the molded product 10 at both ends is not provided.
If the position of No. 2 is shifted, the molded article 102
Of the resin sheet 10 based on the detected position.
1 and trimming in a state where the molded article 102 is accurately positioned is performed with high precision and high price of the molded article sensor 105, the transport roller 104, the roller driving device 115, and the transport. Even if complicated operations are carefully performed using the roller controller 107, it is extremely difficult.

Further, when a special product guide or projection is provided on the punching blade, the cost of the trimming device increases.

Further, since the punched molded article 113 slides down along the inner wall surface of the cylinder, it may be caught on the inner wall of the cylinder, and may be inclined or stopped. If the molded product 102 is not trimmed in a state where it is accurately positioned, the shape of the punched molded product 113 is not a predetermined shape, or the cut surface is not good. It becomes easier to catch on the inner wall. In addition, if the inner wall of the tube is mirror-finished, it is difficult to be caught to some extent. However, since the mirror-finish requires a high processing cost, the cost of the trimming device increases.

When the inner diameter of the cylinder is enlarged, the punched molded product 113 does not catch on the inner wall, but the posture during dropping becomes unstable, and it is difficult to accumulate on the elevating table 114 in an aligned state. Would.

In particular, when the punched molded article 113 is shaped like a dish with a shallow bottom, it is likely to be caught on the inner wall of the cylinder, tilted or stopped, and if the inner diameter of the cylinder is enlarged, Since the posture during the falling is likely to be unstable, it is extremely difficult to collect the postures on the elevating table 114 in an aligned state.

The present invention solves the problems of the conventional trimming apparatus, can simplify the structure and operation, can perform trimming while the molded article is accurately positioned, and can perform punching and molding. It is an object of the present invention to provide a trimming device and a trimming method using a mandrel that can accumulate products in an aligned state and reduce device cost and running cost.

[0019]

For this purpose, in a trimming device using a mandrel according to the present invention, an upper punching blade which is vertically moved and a cylindrical lower punch fixed to a trimming device main body. A blade, a cylinder disposed below the lower punching blade, a mandrel that moves up and down in the lower punching blade and in the cylinder, and supports a formed product in a stacked manner; The molded product obtained is fitted and positioned on the upper end portion of the mandrel or the outer surface of the molded product after trimming accumulated on the mandrel, and the upper punching blade and the lower punching blade are positioned. And a control device for trimming the molded product and sequentially accumulating the trimmed molded product on the mandrel.

[0020] In the trimming apparatus using another mandrel of the present invention, the mandrel is sequentially moved downward according to the number of the molded articles accumulated on the mandrel.

In the trimming apparatus using still another mandrel according to the present invention, there is further provided a knockout for moving the molded products accumulated on the mandrel downward from inside the lower punching blade.

In the trimming method using a mandrel of the present invention, a molded product formed into a resin sheet is fed onto a cylindrical lower punching blade fixed to a trimming device main body, and the molded product is removed from the lower punching blade. Positioning by fitting to the upper end of the mandrel located inside the side punching blade, or the outer surface of the molded product after trimming integrated on the mandrel,
The molded product is trimmed by meshing the upper punching blade and the lower punching blade that are moved in the vertical direction, and the trimmed molded products are sequentially accumulated on the mandrel.

In another trimming method using a mandrel according to the present invention, the mandrel is sequentially moved downward according to the number of the molded products accumulated on the mandrel.

In the trimming method using still another mandrel according to the present invention, the molded products accumulated on the mandrel are moved downward from inside the lower punching blade by knockout.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

In the present embodiment, the trimming device is a resin sheet for forming a resin molded product such as a container for storing foods, beverages, electric parts, daily necessities, medicines, etc., and a lid of the container on a continuous resin sheet. In the molding line, the molded article is disposed downstream of the molding device in the conveying direction of the resin sheet, and cuts and separates the molded article from the resin sheet.

The forming apparatus forms the continuous resin sheet by a thermoforming method such as vacuum forming, pressure forming, draw forming, press forming and matched mold forming.

Although the molded article in the present embodiment may have any shape, the molded articles are fitted to each other in consideration of handling during transportation and storage of the molded article.
It is desirable to have a shape that can be integrated together, for example, a shape such as a dish or a cup having a slanted side wall with a wide opening and a narrow bottom.

The resin sheet in the present embodiment includes PVC (polyvinyl chloride), PS (polystyrene), expanded polystyrene, PP (polypropylene),
ET (polyethylene terephthalate), PC (polycarbonate), ABS resin, methacrylic resin and the like are used. In addition, a sheet in which a plurality of types of resins are laminated can be used in consideration of water resistance, gas barrier properties, and the like.

FIG. 1 is a side view of a trimming apparatus according to an embodiment of the present invention, FIG. 3 is a view taken along the line AA of FIG. 1, and FIG. 4 is a view taken along the line BB of FIG.

In the figure, 10 is a trimming device main body,
Numeral 12 denotes an upper punching blade support table which is vertically moved by an upper punching blade driving device (not shown) provided on the trimming device main body 10, and 13 denotes an upper punching blade attached to the upper punching blade support table 12. It is an extraction blade.

In this case, the upper punching blade driving device includes a hydraulic cylinder and a vertically movable rod, a crank shaft rotated by a motor, and a vertically movable rod. A device that generates a driving force for moving the punching blade 13 in the vertical direction is used.

Reference numeral 18 denotes a molded product formed on the resin sheet 17, and the molded product 18 has a shape protruding upward, for example,
The outer periphery has a rectangular shape with rounded corners, and has a shape in which a side wall is inclined, and an opening is wide and a bottom is narrow. A plurality of, for example, in the width direction of the resin sheet 17, Three are formed. Further, the molded products 18 are formed at a predetermined pitch in the transport direction of the resin sheet 17 (moving rightward in FIG. 1).

A plurality of, for example, three upper punching blades 13 are attached in the width direction of the resin sheet 17. The upper punching blade 13 has a cross section,
It is formed of a cylindrical body having the same shape as the outer periphery of the molded product 18 formed on the resin sheet 17, for example, a rectangular shape with rounded corners. A knockout 48 described later is accommodated in the upper punching blade 13 so as to be movable vertically. Reference numeral 11 denotes a driving device for the knockout 48.

Reference numeral 14 denotes a lower punching blade support table fixed below the trimming device main body 10, and reference numeral 15 denotes a lower punching blade fixed to the lower punching blade support table 14. A plurality of, for example, three lower punching blades 15 are attached at positions corresponding to the upper punching blades 13 in the width direction of the resin sheet 17. The lower punching blade 15 has a cross section similar to that of the upper punching blade 13, each having a cross section of the resin sheet 1.
7, the same shape as the outer periphery of the molded article 18, for example,
It consists of a cylindrical body having a rectangular shape with rounded corners.

The upper punching blade support table 12
Is moved downward by the upper punching blade driving device, the upper punching blade 13 and the lower punching blade 15 are engaged with each other, and the molding is positioned on the lower punching blade 15. The article 18 is separated from the resin sheet 17 by cutting the outer periphery, that is, trimming. In this case, since the upper punching blade 13 and the lower punching blade 15 are attached in a plurality of, for example, three in the width direction of the resin sheet 17, a plurality of, for example, one in the trimming operation, for example,
The three molded products 18 are trimmed. Then, a punched molded product 19 trimmed from the resin sheet 17
Is moved downward through the inside of the lower punching blade 15 as described later.

A transport roll 16 transports the scrap 17a after trimming the molded article 18 from the resin sheet 17 across both ends of the scrap 17a. here,
The transport roll 16 is intermittently rotated by a driving device (not shown) and stopped during the trimming operation. Further, the scrap 17a is discharged to the outside of the trimming device main body 10.

Reference numeral 20 denotes a sheet guide device disposed upstream of the trimming device main body 10 in the conveying direction of the resin sheet 17;
Are a support 21, a swing frame 22 swingably attached to the support 21, an upper sheet guide 23 attached to the swing frame 22, and a lower sheet guide 24 attached to the swing frame 22. And a swing cylinder device 25 for swinging the swing frame 22.

Generally, in a resin sheet molding line,
Since there is a difference in the conveying speed of the resin sheet 17 between the trimming device and a molding device (not shown) arranged on the upstream side (the left side in FIG. 1) in the conveying direction of the resin sheet 17, the difference in the conveying speed is absorbed. As a buffer, the resin sheet 17 is provided between the molding device and the trimming device.
Causing sagging. As shown in FIG. 1, the upstream side of the lower sheet guide 24 has a curved surface so that the slack resin sheet 17 can be smoothly fed onto the lower punching blade 15 at a predetermined height. It is desirable. Since the swing frame 22 is intermittently swung by the swing cylinder device 25 in conjunction with the upper punching blade 13, the resin sheet 17 intermittently moves on the lower punching blade 15. Moved up and down.

Reference numeral 30 denotes a control device. The control device 30 includes a CPU (central operator) 31, storage means 32 such as a semiconductor memory and a hard disk, input means 33 such as a keyboard and a touch panel, a CRT, a liquid crystal display and the like. , And an I / O (input / output interface) 35, etc., and generally control the operation of all or a part of the trimming device. The control device 30 is not an independent device. For example, a device integrated with another control device as a part of a control device that controls devices such as a molding device and a heating device in a resin sheet molding line is used. can do.

Reference numeral 40 denotes an accumulating device for accumulating the punched products 19 arranged below the trimming device main body 10.

Reference numeral 41 denotes a fixed bucket cylinder as a cylinder.
The cross section of the fixed bucket cylinder 41 has, for example, a rectangular shape with rounded corners, like the lower punching blade 15. The inner diameter of the fixed bucket cylinder 41 is the same as that of the lower punching blade 1.
Slightly larger than 5. A plurality, for example, three, of the resin sheet 17 are arranged below the lower punching blade support table 14 in the width direction of the resin sheet 17 so as to correspond to the lower punching blades 15. The extraction blade 15 is connected so as to be coaxial. A slit (not shown) is formed on one lower side surface (the left side surface in FIGS. 3 and 4) of the fixed bucket cylinder 41, and a mandrel elevator 43 described later is vertically moved in the slit.

A mandrel 42 is disposed in the lower punching blade 15, the lower punching blade support table 14, and the fixed bucket cylinder 41 so as to be vertically movable. Upper end 42a of the mandrel 42
Has a shape that fits into the molded product 18 from below and has a smooth surface. Further, the upper end portion 42a can be positioned so as to be movable in the conveying direction of the resin sheet 17 and the width direction of the resin sheet 17 with respect to the upper end of the mandrel 42. The lower ends of the mandrels 42 are attached to the upper ends of mandrel elevators 43, respectively. Each of the mandrel elevators 43 has an upper portion located inside the fixed bucket tube 41 and a lower portion extended outside the fixed bucket tube 41 through the slit, and is attached to an elevator member 44.

The elevator member 44 extends in the width direction of the resin sheet 17, and each mandrel elevator 43 is attached. Further, both ends of the elevator member 44 are slidably attached to a guide rod 45. Further, the elevator member 44
Is attached to a linear body 46 such as a chain or a toothed belt stretched between rotating bodies such as pulleys and gears disposed above and below. The linear body 46 is rotated by rotating the rotary body by a rotary power source 47 such as an electric motor.

Therefore, when the rotary power source 47 is driven based on a command from the control device 30, the linear body 46 is rotated, and the elevator member 44 is moved vertically along the guide rod 45. Moved to
Each of the mandrels 42 is moved up and down.

The plurality of knockouts 48 are disposed at positions corresponding to the mandrel 42 with the lower end face facing the upper end face of the mandrel 42 and a plurality of, for example, three knockouts 48 in the width direction of the resin sheet 17. Is done. Each of the knockouts 48 is moved downward by the driving device 11, and a lower end surface of the knockout 48 enters the lower punching blade 15 to protrude the punched molded product 19 from the lower punching blade 15.

The reference numeral 50 denotes the integrated stamped molded product 1
9 is a tilting device for tilting.

A plurality of, for example, three, 51 are provided below each fixed bucket cylinder 41 in the width direction of the resin sheet 17.
The tilt bucket cylinders are individually disposed, and have the same shape as the fixed bucket cylinder 41, for example, a rectangular cross section and a cross sectional dimension with rounded corners. Slits (not shown) are respectively formed on both side surfaces of the tilting bucket cylinder 51, and the mandrel elevator passes through the inside of the tilting bucket cylinder 51 through a slit on one side surface (the left side surface in FIGS. 3 and 4). 43 and the mandrel 42 are moved up and down, and the other side (the right side in FIGS. 3 and 4)
A pressing member 53 described later is moved with respect to the tilting bucket 51 through the slit. Further, the lower end surface of the tilting bucket cylinder 51 is open, and a plurality of projections (not shown) are formed on the lower end surface toward the inside. Each of the protrusions is protruded to the extent that the mandrel 42 can pass through but the stamped product 19 cannot drop, and supports the edge of the stamped product 19 deposited at the bottom.

Each tilting bucket cylinder 51 is mounted on the tilting frame 52, and each tilting frame 52 is mounted on a tilting support base 55 so as to be swingable.
6 allows the rocker to swing in a range of 90 degrees from vertical to horizontal. In the tilting frame 52, a pressing member 53 for pressing the top of the punched molded product 19 accumulated in the tilting bucket cylinder 51 is provided to a pressing cylinder device 54 for moving the pressing member 53. A plurality, for example, three, are attached so as to be movable in the tilting bucket cylinder 51 direction. The tilting device 50 includes a tilting bucket cylinder 51, a tilting frame 52,
Holding member 53, holding cylinder device 54, tilt support table 55
And the tilt cylinder device 56. 60
Is a discharge device for discharging the tilted punched product 19 from the tilting bucket cylinder 51.

Reference numeral 61 denotes a first pusher rod. A plurality of, for example, three, pusher rods are provided in the width direction of the resin sheet 17 so as to correspond to the respective tilting buckets 51 in a horizontal state. It can be passed through the tilting bucket 51. An end connecting member 6 is connected to one end (the left end in the figure) of the first pusher rod 61, respectively.
The end connection members 66 are attached to a common connection member 69 extending in the width direction of the resin sheet 17. The end connecting member 66 has the same thickness as the mandrel elevator 43 and is moved in a slit (not shown) formed on one side surface of the tilting bucket cylinder 51. Further, a second pusher rod 62 is attached to the common connecting member 69.

Then, the second pusher rod 62
The first rodless cylinder 63 is slidably attached to the first rodless cylinder 63, and is moved in a horizontal direction when the first rodless cylinder 63 is operated. Further, the first rodless cylinder 63 is attached to the second rodless cylinder 65 via a cylinder connecting member 68. The second rodless cylinder 65 is slidably attached to a pusher guide 64 having both ends fixed to a pusher support 67.
Is operated, the second rodless cylinder 65 itself is moved in the left-right direction along the pusher guide 64. The discharging device 60 includes a first pusher rod 61, a second pusher rod 62, a first rodless cylinder 63, a pusher guide 64, a second rodless cylinder 65, an end connecting member 66, a pusher support 6
7, constituted by a cylinder connecting member 68 and a common connecting member 69.

Reference numeral 70 denotes a transfer device such as a conveyor or a transfer trolley for feeding the discharged punched product 19 to subsequent processes such as packaging and packing.
Is desirably disposed on the downstream side (the right side in the drawing) in the transport direction of the resin sheet 17a.

Next, the operation of the trimming device having the above configuration will be described.

FIG. 5 is a first view of an enlarged sectional view of a portion C in FIG.
6 is a second view of the enlarged sectional view of the part C in FIG. 4, FIG. 7 is a third view of the enlarged sectional view of the part C in FIG. 4, and FIG. 8 is a fourth view of the enlarged sectional view of the part C in FIG. 9, FIG. 9 is a fifth view of an enlarged sectional view of a portion C in FIG. 4, FIG. 10 is a sixth view of an enlarged sectional view of a portion C in FIG.
7 is an enlarged sectional view of a portion C in FIG. 4 and FIG.
FIG. 8 is an enlarged sectional view of a part, and FIG. 13 is a first view showing an operation of discharging a punched molded product according to the embodiment of the present invention.
FIG. 4 is a second diagram illustrating the discharging operation of the punched molded product according to the embodiment of the present invention.

In the drawing, 18-n denotes n in one lot of the molded article 18 formed on the resin sheet 17.
The n-th (n is a natural number) molded product, and 19-n is the n-th stamped molded product obtained by trimming the n-th molded product 18-n.

First, the trimming operation will be described.

In the trimming device having the above-described configuration, the resin sheet 17 is intermittently conveyed, and the first molded product 18-1 in the first lot is placed on the lower punching blade 15 as shown in FIG. Sent and stopped. At this time,
Since the lower sheet guide 24 is in the raised state, the molded product 18-1 is separated from the upper surface of the lower punching blade 15. Further, the upper end 42 a of the mandrel 42 projects above the lower punching blade 15, but is located below the resin sheet 17.

Next, the swing cylinder device 25 is operated,
The lower sheet guide 24 is moved downward,
As shown in FIG. 6, it is in a lowered state. At this time,
The molded product 18-1 is provided at the upper end 42 of the mandrel 42.
a. By driving the upper punching blade driving device, the upper punching blade support table 12 is driven.
Is moved downward, and the upper punching blade 13 and the lower punching blade 1
5 are engaged.

As a result, the resin sheet 17 is pressed from above by the upper punching blade 13, and the molded product 18-1 is fitted to the upper end 42a of the mandrel 42. Thus, the relative position between the mandrel 42 and the lower punching blade 15 is strictly set in advance, and the upper end 42 of the mandrel 42
a, for example, has a shape that fits loosely from below onto the molded product 18-1 having a shape of a rectangular dish with rounded corners, so that it fits loosely with the upper end portion 42a of the mandrel 42. The molded product 18-1 is used as the lower punching blade 1
5 is accurately positioned.

If the molded product 18-1 is sent to the lower punching blade 15 and stopped, the molded product 18-1
Even if the position of -1 is shifted with respect to the lower punching blade 15, in the process of fitting the molded product 18-1 with the upper end 42a of the mandrel 42, the molded product 18-1 Since the position is forcibly aligned with the position of the upper end 42a of the mandrel 42, the mandrel 4
The molded article 18-
1 is accurately positioned with respect to the lower punching blade 15. That is, the molded product 18-1 is aligned by the upper end 42a of the mandrel 42, and is accurately positioned with respect to the lower punching blade 15. In this case, the movement of the resin sheet 17 is free.
It is desirable that the transport roll 16 be in a state where it can be freely rotated.

The upper end 42 of the mandrel 42
a into the molded product 18-1.
Is trimmed with the correct positioning. Therefore, the punched molded product 19-1 has a predetermined shape and a good cut surface, and has high quality.

Next, the upper punching blade driving device is driven,
The upper punching blade support table 12 and the upper punching blade 1
3 is moved upward, as shown in FIG.
At this time, the lower sheet guide 24 is moved upward to be in an ascended state.
Is intermittently conveyed, and the second molded product 18-2 is sent onto the lower punching blade 15 and stopped. On the other hand, the first stamped molded product 19-1 is held in the lower punching blade 15 by friction with the inner peripheral surface of the lower punching blade 15.

Further, the linear body 46 is moved by the rotary driving force source 47 (FIG. 4), and the mandrel elevator 43 is moved.
Is moved downward, and the mandrel 42 is moved downward by one pitch of the punched and formed product 19.

Next, the lower sheet guide 24 is moved downward and is lowered. Then, FIG.
As shown in the figure, the molded product 18-2 is lightly pressed from above onto the upper end surface of the first punched molded product 19-1.

Next, as shown in FIG. 9, the upper punching blade support table 12 is moved downward, and the upper punching blade 13 and the lower punching blade 15 are engaged.

Thus, the resin sheet 17 is pressed against the upper punching blade 13 from above, and the molded product 18 is pressed.
-2 is strongly pressed against the stamped product 19-1,
The stamped product 19-1 is moved downward, and is fitted to the upper end portion of the mandrel 42 in a state where the stamped product 19 is lowered by one pitch. on the other hand,
The molded product 18-2 is fitted to the outer surface of the punched molded product 19-1. Here, the punched molded product 1
Since 9-1 performs the same function as the mandrel 42 in FIG. 6 with respect to the molded product 18-2, the molded product 18-2 is aligned by the outer surface of the stamped molded product 19-1. Then, the trimming is performed in a state where it is accurately positioned with respect to the lower punching blade 15.

Thereafter, by repeating the operations shown in FIGS. 7 to 9 n-2 times, the molded article 19 is placed on the mandrel 42 inside the fixed bucket cylinder 41, as shown in FIG. Individually accumulate. In addition, since the mandrel 42 is sequentially moved downward by one pitch of the punched products 19 that have been accumulated, the punched products 19 are kept aligned on the mandrel 42. Be accumulated.

Here, the mandrel 42 is at a position lower than the position shown in FIG. 6 by n-1 pitches of the punched products 19 to be accumulated. When the upper punching blade 13 and the lower punching blade 15 are engaged with each other, the molded product 18-n is fitted to the outer surface of the punched molded product 19-n-1 and trimmed. . Then, the mandrel 4
On the sheet 2, n pieces of the punched molded articles 19 are accumulated, that is, a predetermined number to be sent to the subsequent processes such as packaging and boxing.

Next, the upper punching blade driving device is driven, and the upper punching blade support table 12 and the upper punching blade 13 are moved upward as shown in FIG. At this time, the knockout 48 is moved downward by the power unit 11, and the lower end face thereof is
5 and the punched molded products 19-1 to 19-n remaining in the lower punching blade 15 due to friction with the inner peripheral surface of the lower punching blade 15 are removed. Push out into the fixed bucket cylinder 41. At this time, the mandrel 42 is moved downward, so that the mandrel 42 is located below the position shown in FIG.
It is placed in the position shown in FIG.

The inner diameter of the fixed bucket cylinder 41 is
Since the inner diameter of the lower punching blade 15 is slightly larger than the inner diameter of the lower punching blade 15, the punched molded products 19-1 to 19-n can move smoothly in the fixed bucket cylinder 41,
It can be kept aligned.

At this time, the punched molded products 19-1 accumulated
To make it easier to keep the aligned state of ~ 19-n,
By moving the knockout 48 further downward, the punched molded product 19-1 accumulated on the mandrel 42
It is desirable to slightly depress .about.19-n to align.

As described above, in the fixed bucket cylinder 41, the stamped product 19 is placed on the mandrel 42.
Are accumulated in a predetermined number, the mandrel 42 is moved further downward, and the accumulated punched molded products 19-1 to 19-1 are accumulated.
19-n is moved into the tilting bucket cylinder 51.

In the trimming operation, when the first molded product 18-1 in the first lot is sent to the lower punching blade 15 and stopped, as shown in FIG. The sheet guide 24 can be placed in a lowered state. In this case, the molded product 18-1 is:
The upper end portion 42a of the mandrel 42 is located at a position lower than the upper end surface of the lower punching blade 15 at a position in contact with the upper end surface of the lower punching blade 15, and the molded product 18-1 is formed. After being stopped on the lower punching blade 15, it is moved upward and placed in the position shown in FIGS. In this case, the subsequent trimming operation is shown in FIGS.

Next, the discharging operation of the punched molded product 19 will be described.

After the punched molded products 19-1 to 19-n have been moved into the tilting bucket cylinder 51, the mandrel 42 passes through the opening at the lower end surface of the tilting bucket cylinder 51. And moved further down. On the other hand, the punched molded products 19-1 to 19-n are supported by protrusions formed on the lower end surface of the tilting bucket cylinder 51, and are integrated in the tilting bucket cylinder 51.

Next, the holding member 53 is moved toward the tilt bucket cylinder 51 by the holding cylinder device 54,
Press down on the top of the stamped product 19-n. Thereafter, the tilting frame 52 is tilted by the tilting cylinder device 56, and the tilting bucket cylinder 51 is placed in a horizontal state as shown in FIG.

Next, by operating the first rodless cylinder 63 and the second rodless cylinder 65, the first pusher rod 61 and the second pusher rod 62 are advanced (moved to the right in the figure), and as shown in FIG. Reach the indicated position. Here, the first pusher rod 61 having a smaller diameter than the mandrel 42 is attached to the tilting bucket cylinder 51.
Through the opening in the lower end surface of the cylinder 51, the punched cylinders 51 advance, and the punched molded products 19-1 to 19-n accumulated in the cylinder 51 are pushed out to the transfer device 70. At this time, the pressing member 53 is moved downward.

Thereafter, the stacking device 40, the tilting device 50 and the discharging device 60 return to the state shown in FIG. On the other hand, the extruded punched molded products 19-1 to 19-n
Is placed on the transport device 70 and sent to subsequent processes such as packaging and packing.

As described above, in the present embodiment, the molded product 18 is aligned by the upper end portion 42a of the mandrel 42 or the outer surface of the punched molded product 19, and is accurately aligned with the lower punching blade 15. Since the trimming is performed in a state where the punching molded article 19 is positioned, the punched molded article 19 has a predetermined shape and a good cut surface, and is of high quality.

Further, since the mandrel 42 is sequentially moved downward by one pitch of the punched molded articles 19 to be accumulated, the punched molded articles 19 are kept aligned and accumulated on the mandrel 42. Is done.

Therefore, a highly accurate sheet feed sensor,
Special product guides, projections, and the like provided on the punching blade are not required, so that the configuration and operation of the trimming device can be simplified, and the cost and running cost of the trimming device can be reduced.

The present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0083]

As described above in detail, according to the present invention, in a trimming device using a mandrel, an upper punching blade that can be moved in the vertical direction, and a cylindrical shape fixed to the trimming device main body. A lower punching blade, a cylinder disposed below the lower punching blade, a mandrel that moves up and down in the lower punching blade and in the cylinder to accumulate and support molded products, and a resin. The molded product formed into a sheet is fitted and positioned on the upper end of the mandrel or the outer surface of the molded product after trimming accumulated on the mandrel, and the upper punching blade and the lower punching blade are positioned. And a control device for trimming the molded product and sequentially accumulating the trimmed molded product on the mandrel.

In this case, the molding is aligned by the upper end of the mandrel or the outer surface of another molding,
Since the trimming is performed in a state of being accurately positioned with respect to the lower punching blade, the trimmed molded product is
It has a predetermined shape and a good cut surface, and has high quality.

Therefore, a highly accurate sheet feed sensor,
Special product guides, projections, and the like provided on the punching blade are not required, so that the configuration and operation of the trimming device can be simplified, and the cost and running cost of the trimming device can be reduced.

In the trimming apparatus using another mandrel according to the present invention, the mandrel is further moved downward sequentially according to the number of the molded articles accumulated on the mandrel.

In this case, the mandrel is sequentially moved downward by one pitch of the molded articles to be accumulated.
The molded article is kept on the aligned state and is accumulated on the mandrel. In the trimming method using the mandrel of the present invention, the molded article formed on the resin sheet is formed on the lower side of the cylinder fixed to the trimming device main body. Feeding on a punching blade, positioning the molded product by fitting it to the upper end of a mandrel located inside the lower punching blade, or the outer surface of the trimmed molded product integrated on the mandrel The upper punching blade moved vertically and the lower punching blade are engaged with each other to trim the molded product, and the trimmed molded products are sequentially accumulated on the mandrel.

In this case, the molding is aligned by the upper end of the mandrel or the outer surface of another molding,
Since the trimming is performed in a state of being accurately positioned with respect to the lower punching blade, the trimmed molded product is
It has a predetermined shape and a good cut surface, and has high quality.

Therefore, a highly accurate sheet feed sensor,
Special product guides, projections, and the like provided on the punching blade are not required, so that the configuration and operation of the trimming device can be simplified, and the cost and running cost of the trimming device can be reduced.

In the trimming method using another mandrel according to the present invention, the mandrel is sequentially moved downward in accordance with the number of molded articles accumulated on the mandrel.

In this case, since the mandrel is sequentially moved downward by one pitch of the molded articles accumulated in the fixed bucket cylinder, the molded articles are kept aligned in the fixed bucket cylinder, and Integrated on top.

[Brief description of the drawings]

FIG. 1 is a side view of a trimming device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram of a conventional trimming device.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 1;

FIG. 4 is a view taken in the direction of arrows BB in FIG. 3;

FIG. 5 is a first view of an enlarged sectional view of a portion C in FIG. 4;

FIG. 6 is an enlarged sectional view of a portion C in FIG. 4;

FIG. 7 is an enlarged sectional view of a portion C in FIG. 4;

8 is an enlarged sectional view of a portion C in FIG. 4; FIG.

9 is an enlarged sectional view of a portion C in FIG. 4; FIG.

FIG. 10 is an enlarged sectional view of a portion C in FIG. 4;

11 is an enlarged sectional view of a portion C in FIG. 4; FIG.

FIG. 12 is an enlarged sectional view of a portion C in FIG. 4;

FIG. 13 is a first diagram illustrating an operation of discharging a punched molded product according to the embodiment of the present invention.

FIG. 14 is a second diagram illustrating the discharging operation of the punched molded product according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 Trimming device main body 13 Upper punching blade 15 Lower punching knife 17 Resin sheet 18, 18-n Molded product 19, 19-n Punched molded product 30 Control device 41 Fixed bucket tube 42 Mandrel 48 Knockout

Claims (6)

[Claims] 1. An upper punching blade which is moved vertically, (a) a cylindrical lower punching blade fixed to a trimming device main body, and (c) a lower punching blade. A cylinder arranged below; (d) a mandrel which moves vertically in the lower punching blade and the cylinder to accumulate and support molded articles; and (e) a molded article molded into a resin sheet. The upper punching blade and the lower punching blade are engaged with each other and positioned on the upper surface of the mandrel or the outer surface of the trimmed molded product accumulated on the mandrel, and the molding is performed. A trimming device using a mandrel, comprising: a control device for trimming an article and sequentially accumulating the trimmed molded article on the mandrel. 2. The trimming device using a mandrel according to claim 1, wherein the mandrel is sequentially moved downward according to the number of the molded articles accumulated on the mandrel. 3. The trimming device using a mandrel according to claim 1, further comprising a knockout for moving the molded products accumulated on the mandrel downward from inside the lower punching blade. And (a) feeding the molded product formed on the resin sheet onto a cylindrical lower punching blade fixed to a trimming device main body, and (b) removing the molded product from the lower punch. (C) the upper punching blade and the lower punch, which are fitted and positioned on the upper end of the mandrel located inside the blade or the outer surface of the trimmed molded product accumulated on the mandrel, and A trimming method using a mandrel, characterized in that the molded product is trimmed by engaging a side punching blade and the trimmed molded product is sequentially accumulated on the mandrel. 5. The trimming method using a mandrel according to claim 4, wherein the mandrel is sequentially moved downward in accordance with the number of the molded articles accumulated on the mandrel. 6. The trimming method using a mandrel according to claim 4, wherein the molded articles accumulated on the mandrel are moved downward from inside the lower punching blade by knockout.