JP3476747B2 - Trimming device and method using mandrel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimming device using a mandrel and a trimming method using the mandrel.

[0002]

2. Description of the Related Art Conventionally, resin sheet molding for molding resin molded products such as containers for storing foods, beverages, electric parts, daily necessities, medicines, etc., container lids, etc. on continuous resin sheets. In the line, there is provided a trimming device that cuts and separates a molded product molded by the molding device from a resin sheet.

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

The resin sheet 101 is intermittently transported by rotating a transport roller 104, and a molded product 102 is molded by a molding device (not shown) arranged upstream (left side in the drawing) in the transport direction. rear,
Sent to the trimming device. The molded product 102 has a shape that is convex upward, and a plurality of molded products 102 are molded in the width direction of the resin sheet 101 (direction perpendicular to the drawing).

When the molded product sensor 105 detects that the molded product 102 has reached a predetermined position, a detection signal is sent via the sensor controller 106 to the conveyance roller controller 107 and the upper punching blade controller 108.
Sent to. When the carrying roller controller 107 receives the detection signal, it sends a command to the roller driving device 115 to stop the rotation of the carrying roller 104, so that the molded product 102 is accurately positioned at the trimming position. Can be made.

On the other hand, the upper punching blade controller 108
Can send a command to the upper punching blade drive device 109 to move the upper punching blade 111 in the vertical direction. Then, by moving the upper punching blade 111 downward and engaging with the lower punching blade 112, the outer periphery of the molded product 102 positioned on the lower punching blade 112 is cut. The molded product 102 to the resin sheet 101.
Trim by separating from. Therefore, since the molded product 102 is trimmed while being accurately positioned, the cutting position of the molded product 102 does not deviate, and the shape of the outer periphery and the condition of the cut surface are good.

The trimmed molded product 102 falls through the opening of the lower punching blade 112, and along the inner wall surface of the cylinder connected to the lower end of the lower punching blade 112. The trimmed molded product 10 slides down in a certain posture and is placed on the lifting table 114 disposed inside the cylinder.
2, that is, the punch-molded products 113 are accumulated. In this case, the elevating table 114 includes the stamped molded products 1 to be accumulated.
As the number of 13 is increased, the punched products 113 are gradually moved downward to accumulate the punched products 113 in an aligned state.

Therefore, handling in subsequent steps becomes easy.

Further, in order to prevent the deviation of the molded product with respect to the trimming position, a special product guide is built into the punching blade, or a projection for positioning the sent sheet with the molded product and the punching blade. There is a thing in which an object is formed into a punching blade.

[0010]

However, in the above-mentioned conventional trimming device, since the molded product sensor 105 is used to position the molded product 102,
The structure and operation become complicated, and the cost of the trimming device and the running cost increase. Usually, in the trimming device, one hundredth [mm] to one tenth [m]
m] ordering accuracy is required, but
In order to position the resin sheet 101 with high accuracy as described above, not only the molded product sensor 105 that detects the position of the molded product 102 but also the transport roller 104, the roller driving device 115, and the transport roller controller 107 are highly accurate. There is a need.

The conveying roller 104 is the resin sheet 1
The resin sheet 101 is conveyed by sandwiching both ends thereof, but in many cases, the resin sheet 101 is not uniform in thickness at both ends or corrugated. In this case, even if the rotation of the transport roller 104 is constant, the resin sheet 10
The transport speed of 1 is not constant.

In addition, there are cases where the conveyance speed at both ends of the resin sheet 101 is different and the position of the molded product 102 deviates 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 formed.
When the position of 2 is misaligned, the molded product 102
Of the resin sheet 10 based on the detected position of
By controlling the conveyance of No. 1 and trimming the molded product 102 in the accurately positioned state, the molded product sensor 105, the conveying roller 104, the roller driving device 115, and the conveying device of high accuracy and high cost can be obtained. Even if the roller controller 107 is used and a complicated operation is carefully performed, it is extremely difficult.

If the punching blade is provided with a special product guide or projection, the cost of the trimming device is increased.

Further, since the punch-molded product 113 slides down along the inner wall surface of the cylinder, it may be caught on the inner wall of the cylinder and tilt or stop. If the molded product 102 is not trimmed in a correctly positioned state, the shape of the punched molded product 113 is not a predetermined shape or the cut surface is not good. It becomes easier to get caught on the inner wall. It should be noted that if the inner wall of the cylinder is mirror-finished, it will be difficult to get caught to some extent, but since the mirror-finish finish has a high processing cost, the cost of the trimming device will be high.

Further, when the inner diameter of the cylinder is enlarged, the punched product 113 does not get caught on the inner wall, but the posture during dropping becomes unstable, and it becomes difficult to stack the punched product 113 on the elevating table 114 in an aligned state. Will end up.

In particular, when the punched product 113 has a shape like a shallow dish, it tends to catch on the inner wall of the cylinder and tilt or stop, and when the inner diameter of the cylinder is enlarged, Since the posture during falling is likely to be unstable, it is extremely difficult to stack them on the elevating table 114 in an aligned state.

The present invention solves the above-mentioned problems of the conventional trimming device, simplifies the structure and operation, and enables trimming in a state where the molded product is accurately positioned. An object of the present invention is to provide a trimming device and a trimming method using a mandrel, which can accumulate the products in an aligned state and reduce the device cost and the running cost.

[0019]

Therefore, in the trimming device using the mandrel of the present invention, the upper punching blade which is vertically movable and the cylindrical lower punching which is fixed to the trimming device main body. Molded into blade and resin sheet
Equipped with an upper end that can position the molded product,
The upper end can be projected upward from the lower punching blade,
One, a mandrel for stacking supporting the molded article by moving the lower punch within the blades in the vertical direction, the molded article, the lower
The upper punching blade and the lower punching are positioned by fitting (fitting) to the upper end of the mandrel projected above the punching blade or the outer surface of the trimmed molded product accumulated on the mandrel. And a control device for engaging the punching blade with each other, trimming the molded product, and successively accumulating the trimmed molded product on the mandrel.

In the trimming apparatus using another mandrel of the present invention, the mandrel is further moved downward in accordance with the number of the molded products accumulated on the mandrel.

In still another trimming device using a mandrel of the present invention, the trimming device further has a knockout for moving the molded products accumulated on the mandrel downward from the inside of the lower punching blade.

In the trimming method using the mandrel of the present invention, the molded product formed on the resin sheet is fed to the tubular lower punching blade fixed to the trimming device body, and the molded product is Projected above the lower punching blade
The upper punching blade and the lower punching blade, which are moved vertically, are positioned by fitting them on the upper end of the mandrel or on the outer surface of the trimmed molded product accumulated on the mandrel. Then, the molded product is trimmed, and the trimmed molded product is sequentially accumulated on the mandrel.

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

In still another trimming method using a mandrel of the present invention, the molded products accumulated on the mandrel are further moved downward from inside the lower punching blade by knocking out.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the present embodiment, the trimming device is a resin sheet for molding a continuous resin sheet into a resin molded product such as a container for containing foods, beverages, electric parts, daily necessities, pharmaceuticals, etc., a container lid, etc. In the molding line, the molded product, which is arranged on the downstream side of the molding device in the conveying direction of the resin sheet, and molded is cut and separated from the resin sheet.

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

The molded product in the present embodiment may have any shape, but in consideration of handling during transportation, storage, etc. of the molded product, they are fitted to each other.
It is desirable to have such a shape that they can be fitted together and integrated, for example, a shape of a plate, a cup or the like having a sloped side wall and a wide opening and a narrow bottom.

As the resin sheet in the present embodiment, PVC (polyvinyl chloride), PS (polystyrene), expanded polystyrene, PP (polypropylene), P
ET (polyethylene terephthalate), PC (polycarbonate), ABS resin, methacrylic resin, etc. are used. Further, in consideration of water resistance, gas barrier property, etc., a sheet in which a plurality of kinds of resins are laminated can be used.

FIG. 1 is a side view of a trimming device 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 the trimming device body,
Reference numeral 12 denotes an upper punching blade support table which is vertically moved by an upper punching blade driving device (not shown) provided in the trimming device main body 10, and 13 denotes an upper punching blade support table attached to the upper punching blade support table 12. It is a punching blade.

In this case, as the upper punching blade driving device, an upper side such as one including a hydraulic cylinder and a rod movable in the vertical direction, one including a crank shaft rotated by a motor and a rod movable in the vertical direction, and the like. A tool that generates a driving force for moving the punching blade 13 in the vertical direction is used.

Reference numeral 18 denotes a molded product molded 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 a plate having a wide opening and a narrow bottom is turned down, and a plurality of them in the width direction of the resin sheet 17, for example, Three are formed. Further, the molded products 18 are formed at a predetermined pitch in the conveying direction of the resin sheet 17 (moved to the right in FIG. 1).

A plurality of, for example, three upper punching blades 13 are attached in the width direction of the resin sheet 17. In addition, each of the upper punching blades 13 has a cross section of
It is formed of a tubular body having the same shape as the outer circumference of the molded product 18 molded into 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 vertically movable. Reference numeral 11 is a drive device for the knockout 48.

Reference numeral 14 is a lower punching blade support table fixed below the trimming device body 10, and 15 is 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 resin sheet 1 in the same manner as the upper punching blade 13.
The same shape as the outer periphery of the molded product 18 molded in 7, for example,
It is composed of a tubular body having a rectangular shape with rounded corners.

Then, the upper punching blade supporting 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 product 18 is separated from the resin sheet 17 by cutting the outer periphery thereof, that is, trimmed. In this case, a plurality of, for example, three upper punching blades 13 and lower punching blades 15 are attached in the width direction of the resin sheet 17, so that a plurality of trimming operations are performed once, for example,
The three moldings 18 are trimmed. Then, a punching-molded product 19 trimmed from the resin sheet 17
Is moved downward through the lower punching blade 15 as described later.

Further, 16 is a conveying roll, and conveys the scrap 17a after the molded product 18 is trimmed from the resin sheet 17 by sandwiching both ends thereof. 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 body 10.

Reference numeral 20 denotes a sheet guide device arranged upstream of the trimming device main body 10 in the conveying direction of the resin sheet 17, and the sheet guide device 20 is provided.
Is a support base 21, a swing frame 22 swingably attached to the support base 21, an upper sheet guide 23 attached to the swing frame 22, and a lower sheet guide 24 attached to the swing frame 22. , 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 conveyance speed of the resin sheet 17 between the trimming device and the molding device (not shown) arranged on the upstream side (the left side in FIG. 1) in the conveyance direction of the resin sheet 17, the difference in the conveyance speed is absorbed. As a buffer, the resin sheet 17 is provided between the molding device and the trimming device.
It causes slack. As shown in FIG. 1, the upstream side of the lower sheet guide 24 has a curved surface so that the slackened resin sheet 17 can be smoothly fed onto the lower punching blade 15 at a predetermined height. Is desirable. The swing frame 22 is intermittently swung by the swing cylinder device 25 in conjunction with the upper punching blade 13, so that the resin sheet 17 is intermittently moved on the lower punching blade 15. It can be moved vertically.

Reference numeral 30 is a control device, and the control device 30 includes a CPU (central operator) 31, a storage means 32 such as a semiconductor memory and a hard disk, an input means 33 such as a keyboard and a touch panel, a CRT, a liquid crystal display and the like. The display means 34, the I / O (input / output interface) 35, and the like are provided, and the operation of all or a part of the trimming device is comprehensively controlled. Note that the control device 30 is not an independent one, but is, for example, one integrated with another control device as a part of a control device for controlling a device such as a molding device and a heating device in a resin sheet molding line. can do.

Reference numeral 40 denotes a stacking device for stacking the punched products 19 arranged under the trimming device body 10.

41 is 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 lower punching blade 1
Slightly larger than 5. Under the lower punching blade support table 14, a plurality of, for example, three, are arranged in the width direction of the resin sheet 17 so as to correspond to the lower punching blades 15. The blade 15 is connected so as to be coaxial. In addition, a slit (not shown) is formed on one side surface (left side surface in FIGS. 3 and 4) below the fixed bucket cylinder 41, and mandrel elevators 43 described later are respectively moved in the slits in the vertical direction.

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

Then, the elevator member 44 is extended in the width direction of the resin sheet 17, and each mandrel elevator 43 is attached thereto. Both ends of the elevator member 44 are slidably attached to the guide rods 45. Further, the elevator member 44
Is attached to a linear body 46 such as a pulley, a chain stretched between rotating bodies such as pulleys and gears arranged above and below, and a toothed belt. The linear body 46 is rotated by rotating the rotating body by a rotational 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
The mandrels 42 are moved in the vertical direction.

A plurality of, for example, three knockouts 48 are provided at positions corresponding to the mandrels 42 with their lower end surfaces facing the upper end surfaces of the mandrel 42 and in the width direction of the resin sheet 17. To be done. Each of the knockouts 48 is moved downward by the drive device 11, and the lower end surface of the knockout 48 enters the lower punching blade 15 and projects the punched product 19 from the lower punching blade 15.

Further, 50 is the above-mentioned stamped molded product 1 which is integrated.
It is a tilting device for tilting 9.

A plurality of 51, for example, 3 are provided under each of the fixed bucket cylinders 41 in the width direction of the resin sheet 17.
The tilted bucket cylinders are individually arranged, and have the same shape as the fixed bucket cylinder 41, for example, a rectangular cross section with rounded corners and cross-sectional dimensions. Then, slits (not shown) are formed on both side surfaces of the tilting bucket cylinder 51, and the inside of the tilting bucket cylinder 51 is moved through the slit on one side surface (left side surface in FIGS. 3 and 4). 43 and the mandrel 42 are moved vertically, and the other side surface (right side surface in FIGS. 3 and 4)
A pressing member 53, which will be described later, is moved with respect to the tilting bucket 51 via the slit. Further, the lower end surface of the tilting bucket cylinder 51 is opened, and a plurality of protrusions (not shown) are formed on the lower end surface facing inward. Each of the protrusions is projected to the extent that the mandrel 42 can pass but the punched product 19 cannot drop and supports the edge of the punched product 19 deposited at the bottom.

Then, each tilting bucket cylinder 51 is attached to the tilting frame 52, each tilting frame 52 is swingably attached to the tilting support base 55, and the tilting cylinder device 5 is mounted.
6 swings in a range of 90 degrees from vertical to horizontal. Further, in the tilting frame 52, a pressing member 53 that presses the top of the punching-molded products 19 accumulated in the tilting bucket cylinder 51, and in the pressing cylinder device 54 that moves the pressing member 53, A plurality of, for example, three, are attached so as to be movable in the direction of the tilting bucket cylinder 51. The tilting device 50 includes a tilting bucket cylinder 51, a tilting frame 52,
Presser member 53, presser cylinder device 54, tilting support base 55
And a tilt cylinder device 56. 60
Is a discharging device for discharging the tilted punched product 19 from the tilting bucket cylinder 51.

Reference numeral 61 is a first pusher rod, and a plurality of, for example, three, are arranged in the width direction of the resin sheet 17 so as to correspond to the tilt buckets 51 in the horizontal state. It is allowed to pass through the tilt bucket 51. Then, one end (the left end in the drawing) of the first pusher rod 61 is connected to each of the end connecting members 6
6 are attached, and each end connecting member 66 is attached to a common connecting 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 tilt bucket cylinder 51. The second pusher rod 62 is attached to the common connecting member 69.

The second pusher rod 62 is
It is slidably attached to the first rodless cylinder 63, and when the first rodless cylinder 63 is operated, it is moved in the horizontal direction. Further, the first rodless cylinder 63 is attached to the second rodless cylinder 65 via the cylinder connecting member 68. The second rodless cylinder 65 is slidably attached to pusher guides 64, both ends of which are fixed to a pusher support 67, and the second rodless cylinder 65 is
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 the first pusher rod 61, the second pusher rod 62, the first rodless cylinder 63, the pusher guide 64, the second rodless cylinder 65, the end connecting member 66, and the pusher support base 6.
7, a cylinder connecting member 68 and a common connecting member 69.

Reference numeral 70 denotes a conveyer such as a conveyor or a carriage for feeding the discharged punched-molded product 19 to the subsequent processes such as packaging and boxing. The conveyer 70
Is preferably disposed on the downstream side (right side in the drawing) in the transport direction of the resin sheet 17a.

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

FIG. 5 is a first diagram of an enlarged cross-sectional view of the C portion of FIG.
6 is a second view of the C section enlarged cross-sectional view of FIG. 4, FIG. 7 is a third view of the C section enlarged cross-sectional view of FIG. 4, and FIG. 8 is a fourth view of the C section enlarged cross-sectional view of FIG. 9 is a fifth view of an enlarged cross-sectional view of the C portion of FIG. 4, FIG. 10 is a sixth view of an enlarged cross-sectional view of the C portion of FIG. 4, FIG.
7 is a seventh view of an enlarged sectional view of a C part of FIG. 4, and FIG. 12 is a C view of FIG.
8 is an enlarged cross-sectional view of a portion, FIG. 13 is a first view showing a discharge operation of a punch-molded product in the embodiment of the present invention, FIG.
FIG. 6B is a second diagram showing the ejection operation of the punch-molded product according to the embodiment of the present invention.

In the figure, 18-n is n in one lot of the molded product 18 molded on the resin sheet 17.
The 19th (n is a natural number) molded product, 19-n is the nth punched molded product obtained by trimming the nth molded product 18-n.

First, the trimming operation will be described.

In the trimming device having the above construction, 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 portion 42 a of the mandrel 42 projects above the lower punching blade 15 but is positioned below the resin sheet 17.

Next, the rocking cylinder device 25 is activated,
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 has an upper end portion 42 of the mandrel 42.
Positioned by a. Then, the upper punching blade support table 12 is driven by driving the upper punching blade driving device.
Is moved downward, and the upper punching blade 13 and the lower punching blade 1
5 and 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 portion 42a of the mandrel 42. In this way, the relative position between the mandrel 42 and the lower punching blade 15 is precisely set in advance, and the upper end portion 42 of the mandrel 42 is set.
For example, a has a shape that fits tightly from the bottom onto the molded product 18-1 in the shape of a rectangular dish with rounded corners, so that it fits snugly onto the upper end 42a of the mandrel 42. The formed product 18-1 is the lower punching blade 1
Accurately positioned with respect to 5.

If the molded product 18-1 is sent to the lower punching blade 15 and stopped, the molded product 18-1 is stopped.
Even if the position of -1 is displaced with respect to the lower punching blade 15, in the process of fitting the molded product 18-1 with the upper end portion 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 product 18-fittingly fitted to the upper end 42a of
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 portion 42 a of the mandrel 42 and accurately positioned with respect to the lower punching blade 15. In this case, in order that the resin sheet 17 may move freely,
It is desirable that the transport roll 16 be freely rotatable.

The upper end portion 42 of the mandrel 42 is
The above-mentioned molded product 18-1
Is trimmed while it is correctly positioned. Therefore, the punch-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 upwards, as shown in FIG.
At this time, the lower sheet guide 24 is moved upward and is in a raised 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 punch-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 product 19 thus deposited.

Next, the lower sheet guide 24 is moved downward and lowered. Then, as shown in FIG.
As shown in FIG. 5, the molded product 18-2 is lightly pressed from above to 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 with each other.

As a result, 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 punch-molded product 19-1,
The punch-molded product 19-1 is moved downward and fitted tightly to the upper end portion of the mandrel 42 in a state where the punch-molded product 19 is lowered by one pitch. on the other hand,
The molded product 18-2 is closely fitted to the outer surface of the punched molded product 19-1. Here, the punched product 1
Since 9-1 exhibits 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 with the outer surface of the punched molded product 19-1. And trimmed in a state where it is accurately positioned with respect to the lower punching blade 15.

Thereafter, by repeating the operation shown in FIGS. 7 to 9 n-2 times, the molded product 19 is n-1 on the mandrel 42 inside the fixed bucket cylinder 41 as shown in FIG. Collect individually. Moreover, since the mandrel 42 is sequentially moved downward by one pitch of the accumulated punched products 19, the punched products 19 are kept on the mandrel 42 while being aligned. Accumulated.

Here, the mandrel 42 is located at a position lower than the position shown in FIG. 6 by n-1 pitches of the punch-molded 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
N punched products 19, that is, a predetermined number of products to be sent to a subsequent process such as packaging or boxing, are accumulated on the die 2.

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 so that the lower end surface thereof has the lower punching blade 1
5 and enters the punching-molded product 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. It is pushed into the fixed bucket cylinder 41. At this time, the mandrel 42 is moved downward so that it 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 it is made slightly larger than the inner diameter of the lower punching blade 15, the accumulated punched-molded products 19-1 to 19-n can smoothly move in the fixed bucket cylinder 41.
You can keep aligned.

At this time, the above-mentioned punch-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 punch-molded product 19-1 accumulated on the mandrel 42.
It is desirable to push down ~ 19-n slightly to align.

As described above, in the fixed bucket cylinder 41, the punch-molded product 19 is placed on the mandrel 42.
When a predetermined number of are stacked, the mandrel 42 is moved further downward, and the stacked punch-molded products 19-1 to 19-1.
19-n is moved into the tilt 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. It is also possible to place the sheet guide 24 in a lowered state. In this case, the molded product 18-1 is
The mandrel 42 is located at a position in contact with the upper end surface of the lower punching blade 15, and the upper end portion 42a of the mandrel 42 is placed at a position lower than the upper end surface of the lower punching blade 15. After being stopped on the lower punching blade 15, it is moved upwards 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 punch-molded product 19 will be described.

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

Next, the pressing member 53 is moved to the tilt bucket cylinder 51 side by the pressing cylinder device 54,
Hold 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, the first rodless cylinder 63 and the second rodless cylinder 65 are operated to move the first pusher rod 61 and the second pusher rod 62 forward (move to the right in the figure), and as shown in FIG. Reach the indicated position. Here, the first pusher rod 61, which has a smaller diameter than the mandrel 42, is attached to the tilt bucket cylinder 51.
Through the opening of the lower end surface of the tilting bucket cylinder 51, and the punching-molded products 19-1 to 19-n accumulated in the tilting bucket cylinder 51 are pushed out to the conveying device 70. At this time, the pressing member 53 is moved downward.

After that, 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 punch-molded products 19-1 to 19-n
Is placed on the carrier device 70 and sent to subsequent processes such as packaging and boxing.

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 the state of being positioned at, the punch-molded product 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 stacked punched products 19, the punched products 19 are stacked on the mandrel 42 while keeping the aligned state. To be done.

Therefore, a highly accurate sheet feed sensor,
No special product guides or projections provided on the punching blade are required, the structure and operation of the trimming device can be simplified, and the cost of the trimming device and the running cost can be reduced.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified within the scope 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 the trimming device using the mandrel, the upper punching blade which can be moved in the vertical direction and the tubular shape fixed to the trimming device main body. Lower punching blade and resin seal
The upper end that can position the molded product
Part, and the upper end can project above the lower punching blade.
And ability and, by moving the lower punch within the blades in the vertical direction
Wherein the mandrel moldings integrated support, fitting the molded article, the upper portion or the outer surface of the molded article after trimming which is integrated on said mandrel of said lower punching blade from the mandrel which projects upward And a positioning device that engages the upper punching blade and the lower punching blade with each other to trim the molded product, and sequentially accumulates 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 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 is of high quality.

Therefore, a highly accurate sheet feed sensor,
No special product guides or projections provided on the punching blade are required, the structure and operation of the trimming device can be simplified, and the cost of the trimming device and the running cost can be reduced.

In the trimming device using another mandrel of the present invention, the mandrel is further moved downward in accordance with the number of the molded products accumulated on the mandrel.

In this case, since the mandrel is sequentially moved downward by one pitch of the molded products to be accumulated,
The moldings are stacked on the mandrel, keeping them aligned . In the trimming method using the mandrel of the present invention, the molded product formed on the resin sheet is fed to a cylindrical lower punching blade fixed to the trimming device main body, and the molded product is subjected to the lower punching. Projected above the punching blade
The upper punching blade and the lower punching blade, which are moved vertically, are positioned by fitting them on the upper end of the mandrel or the outer surface of the trimmed molded product accumulated on the mandrel. Trimming the molded product, and sequentially stacking 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 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 is of high quality.

Therefore, a highly accurate sheet feed sensor,
No special product guides or projections provided on the punching blade are required, the structure and operation of the trimming device can be simplified, and the cost of the trimming device and the running cost can be reduced.

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

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

[Brief description of 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 on arrow AA of FIG.

FIG. 4 is a view taken along the line BB of FIG.

5 is a first diagram of an enlarged cross-sectional view of a C portion of FIG.

6 is a second diagram of an enlarged cross-sectional view of a C portion of FIG.

FIG. 7 is a third diagram of an enlarged cross-sectional view of a C portion of FIG.

FIG. 8 is a fourth enlarged view of a C portion of FIG.

FIG. 9 is an enlarged cross-sectional view of section C of FIG.

FIG. 10 is an enlarged cross-sectional view of a portion C of FIG.

FIG. 11 is a seventh view of an enlarged cross-sectional view of a C part of FIG.

FIG. 12 is an enlarged cross-sectional view of section C of FIG.

FIG. 13 is a first diagram showing a punching-molded product discharging operation in the embodiment of the present invention.

FIG. 14 is a second diagram showing the discharge operation of the punch-molded product in the embodiment of the present invention.

[Explanation of symbols]

10 Trimming device body 13 Upper punching blade 15 Lower punching sword 17 Resin sheet 18, 18-n molded products 19, 19-n punched products 30 control device 41 fixed bucket cylinder 42 Mandrel 48 knockouts

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-57-75814 (JP, A) JP-A-4-360797 (JP, A) Actually open flat-head 4-100128 (JP, U) Registered utility model 3048773 ( (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B26F 1/44 B26F 1/00

Claims (6)

(57) [Claims] 1. (a) an upper punching blade that can be moved in the vertical direction; (b) a cylindrical lower punching blade that is fixed to the trimming device body; and (c) a molding that is molded into a resin sheet. To position the item
Is provided with an upper end that can be
Ri and capable of protruding upward, and a mandrel for stacking supporting the molded article by moving the lower punch within the blades in the vertical direction, (d) the molded article, the above said lower punching blade Protruding
Positioning by is fitted to the upper or outer surface of the molded article after trimming which is integrated on said mandrel of said mandrel and engaged with said lower punching blade and (e) said upper punching blade A trimming device using a mandrel, comprising: a trimming device for trimming the molded product and sequentially stacking the trimmed molded product on the mandrel. 2. The trimming device using a mandrel according to claim 1, wherein the mandrel is sequentially moved downward in accordance with the number of the molded products 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 the inside of the lower punching blade. 4. (a) A molded product molded into a resin sheet is fed to a cylindrical lower punching blade fixed to the trimming device body, and (b) the molded product is punched into the lower punching blade. Protruding above the blade
(C) an upper punching blade and a lower punching blade that are vertically moved by fitting them to the upper end of the mandrel or the outer surface of the trimmed molded product accumulated on the mandrel, and (c) vertically moving. The trimming method using a mandrel, characterized in that (d) the trimmed moldings are successively 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 products accumulated on the mandrel. 6. The trimming method using a mandrel according to claim 4, wherein the molded products accumulated on the mandrel are moved downward from inside the lower punching blade by knocking out.