US3906828A

US3906828A - Hammer actuated clicker die press

Info

Publication number: US3906828A
Authority: US
Inventors: Seiichi Suzuki
Original assignee: Daisuzu Meriyasu Kogyo KK
Current assignee: Daisuzu Meriyasu Kogyo KK
Priority date: 1972-10-07
Filing date: 1973-10-05
Publication date: 1975-09-23
Anticipated expiration: 1992-09-23
Also published as: FR2202183B1; FR2202183A1; CH575813A5; IT994366B; DE2349921A1

Abstract

This invention is aimed at the cutting of various materials, especially fabrics and leathers, according to block patterns. By the simple use of cutting edges of steel band reinforced with structural frame, materials placed on the base board of a hydraulic press can be cut along a required profile by lowering the platen of the hydraulic press to a determined level in the exact position desired. Then, with the final dropping of a hammer head onto the top platen of the hydraulic press, complete cutting is achieved with high precision and a savings of labour.

Description

United States Patent 1191 Suzuki Sept. 23, 1975 HAMMER ACTUATED CLICKER DIE 3,081,659 3/1963 Theobald 83/554 PRESS 3,587,372 6/1971 Prew 83/554 X [75] Inventor: Seiichi Suzuki, Ota, Japan [73] Assignee: Daisuzu Meriyasu Kogyo Kabushiki Prim ry Examiner-Frank T. YOSt Kaisha, Japan Attorney, Agent, or FirmWenderoth, Lind & Ponack [22] Filed: Oct. 5, 1973 [21] Appl. No.: 403,979

[57] ABSTRACT [30] Foreign Application Priority Data Oct. 7, 1972 Japan 47-l00868 This invention is aimed at the Cutting of Various mate" 29, [972 Japan. 47438048 rials, especially fabrics and leathers, according to 29, 1972 Japan. 47438049 block patterns. By the simple use of .cutting edges of Dec. 29, 1972 Japan "48-643 Steel band reinforced with Structural frame, materials placed on the base board of a hydraulic press can be [52 U.S. c1. 83/539; 83/554; 83/587; cut along a required Profile y lowering e platen of 3/ 17; g3 7 0 the hydraulic press to a determined level in the exact 51 Int. Cl B26d 5/08 Position desired- Then, with the final pp 9f 21 [58] Field of Search 83/55, 527, 530, 533, 539, hammer head onto the e platen of the hydraulic 83/554, 617, 700, 561, 562, 586, 587 press, complete cutting is achieved with high precision and a savings of labour. [56] References Cited UNITED STATES PATENTS 6 Claims, 14 Drawing Figures 2,470,561 5/l949 Hunter 83/554 US Patent Sept. 23,1975 Sheet 1 0f 3 3,906,828

FIG. 2

FIG/E US Patent Sept. 23,1975 Sheet 2 of3 3,906,828

FIG. 9 \32 FIG. 10

-US Patent Sept. 23,1975 Sheet 3 of3 3,906,828

LLO

HAMMER ACTUATED CLICKER DIE PRESS OBJECTS AND BRIEF DESCRIPTION OF TI-I INVENTION This invention relates to a cutting apparatus and more specifically to cutting means for cutting many layers of thin sheets of material such as of textile fabrics, woolen fabrics, synthetic fabrics and leathers.

Many fabrics and leathers are out according to block patterns to suite individual purposes. To achieve mass production in cutting, fabrics are generally cut by the sharpened edges of a cutteraccording to block patterns.

In this invention, the sharpened edges of the cutter are carefully made of Swedish high speed steel band, profiled to the required shape and structurally enforced by a support frame. This steel block pattern can be easily made to exact dimensions and can withstand frequent use.

According to this invention, many layers of the material to be cut are placed on the moveable base board of an oil or hydraulic press with the steel block pattern thereabove. The baseboard is then moved underneath hydraulic-press. The layers of material are then cut when the top platen descends to a platen predetermined level to complete the cutting of the material. Exact cutting down to the last layer of material, often presents such problems as uneven or incomplete cutting. This invention has solved such difficulties. Also, the size of press is generally limited. In order to cut material greater than the size of platen, two layers of base board, one above the other, are provided. Exact positioning the top platen of the oil or hydraulic press when cutting is performed is a very important factor when the top platen is lowered to the predetermined level. Means to cope with this objective too are provided for in this invention. Further, with many layers of material on the base board, it is very important that cutting action be complete down to the last layer of material. To achieve that end, a hammer to be dropped on the top platen is provided. With automatic control of these novel mechanisms, much labour is successfully saved.

DETAILED DESCRIPTION OF THE INVENTION With reference to the drawings, the invention will now be described in more detail.

In FIG. 1 is shown the perspective view of the machine with fabric placed on the base board and with the cutting edge placed in position.

In FIG. 2 is shown the front view, partly sectioned.

In FIG. 3 is shown the side view partly sectioned above the line 3-3 of FIG. 2.

In FIG. 4 is shown the base board of the hydraulic press with the supplementary base board in position.

In FIG. 5 is shown FIG. 4 out along the line 5-5 of FIG. 4.

In FIG. 6 is shown a plan view of the structurally reinforced cutting edges.

In FIG. 7 is shown a side view of FIG. 6.

In FIG. 8 is shown a plan view of another embodiment of the cutting edges.

In FIG. 9 is shown a perspective view of the high speed steel band used for the cutting edge.

In FIG. 10 is shown a perspective view of the cutting edge, in part, with the structural reinforcement viewed along line 10-10 of FIG. 8.

In FIG. 11 is shown a partial cross-section of the oil or hydraulic press with the hammer mechanism dropped on the surface of the top platten. I

In FIG. 12 is shown a partial cross-section of the oil or hydraulic press with the hammer mechanism raised and caught by a stop key and held while the hydraulic top platen is lowered.

In FIG. 13 is shown a partial cross-section of the oil or hydraulic press lowered onto the base board.

In FIG. 14 is shown a partial section plan view of oil or hydraulic press with four hammer mechanisms in position.

The detail and operation of the present invention will be hereafter explained, with reference to the accompanying drawings.

In FIG. 2; the oil or hydraulic press 11 comprising top platen 12 and base board 13 is installed on an upright standing structure 14. The four corners 15 of top platten 12 are slidablly supported by four sliding elements 16 solidly fixed to the frame structure 17 and with lubrication between the four corners 15 and the respective sliding elements 16 rigidly fixed to the frame structure. Close to the four corners 15 of the top platen 12, four of blocks 18 are fixed alongside the edges of the top platen 12 which is threaded vertically to take the threaded stopper bolts 18. These stopper bolts 18, can be vertically held by four fixing nuts 21 at a required height in relationship with platen. The top end 20 of stopper bolts 18 is flanged so that the lowest level of the top platen is determined in cooperation with nuts 21 threaded with the stopper bolts 18. The lowest level of bottom surface of top platen 12 must not go beyond a predetermined level allowing edge cutter 31 to reach the surface of the supplemental second board 26 on the base board 13. As there are four of these level adjusting means such as the stopper bolts 18 and the nuts 21, near the four corners of the top platen 12, high precision leveling of the top platen 12 can be achieved. There are two

sets

22, 23 of limit switches employed. The limit switch 22 is made to release the pressure cock of the press when it is in contact with part of the top platen 12. when the top platen is lowered, the contact between the finger of limit switch 22 and the top part of the top platen is no longer maintained, and pressure cock mechanism is affected and press is made to stay. When the finger of the other limit switch 23 touches the extended arm 22' attached to part of the top platen 12, the top platten 12 is made to stop as it affects pressure cock mechanisms. These

limit switches

22, 23 are fairly dependable but as is the general case with electrical appliances, highest degrees of precision can not be expected. To make up for this defect, a drop hammer system for the top platen is resorted to which will be later described.

As shown in FIG. 1, the base board 13, which is moved under top platen 12 horizontally extends beyond the frame structure 17. For this purpose, openings 25 23' are made between the frame structure 17 and the upright standing structure 14. The purpose of this gap making cantelever construction for the frame structure 17 is to enable materials to be continuously supplied from the outside to the base board 13 transversely when many layers must be laid on the base board 13.

Referring to FIG. 3, the base board 13 which is the counter part of top platen 12 is made to reciprocate lengthwise underneath the top platen 12, the baseboard 13 being held in position by two longitudinally extended

members

24, 24 rigidly fixed to the frame structure. These longitudinally extended

members

24, 24 are supported by stays 25, 25 rigidly fixed to the upright stand structure 14. The base board 13 is made to move at least twice the length of the top platen 12 by plunger 26 in cylinder 27 This is because often the length of materials to be cut requires more length than the base board 13, the baseboard 13 being initially equivalent to the size of top platen 12. To cope with this required length, a supplemental second board 26 is provided on the base board 13. The supplemental second board 26 is movable lengthwise along a guide 27. Hand holds 28 are provided on

transverse members

29, 29.

FIG. 6 through FIG. are referred to. Cutting edges are made of Swedish high speed steel band of two kinds having thicknesses of 1.5mm and 2mm, widths of 6mm and 19mm, and unlimited length. The steel board 31 with sharpened edge 32 can be bent with ease according to the profile of block pattern along which materials are required to be cut. To give structural rigidity to the cutting edge, support rod stays 32 and rectangular flat pieces 33 of brass as shown in FIG. 8 and FIG. 10, are hard soldered to the cutting edge of the steel band 31.

Referring to FIGS. 1 and 8, the materials 30 are folded into two sheets. Use of the cutting edges 31 is restricted to contoured parts. After the materials 30 are cut by the press, the materials 30 are unfolded forming a shape where the right and left sides are in a contrast relationship.

Making reference to FIG. 11 through FIG. 14, when the materials are thick or the number of layers of material are many, it is difficult to cut through the last layer of the material, even when other adjustment means such as stopper bolts 18 are made available, due to the lack of sufficient inertia of the press. To solve this prob lem four hammer mechanisms 34 are provided at four places between the stopper bolts 18 on two sides. The hammer plungers 34 are encased in their respective casings 35. The top of each casing is rigidly affixed to the inside of the top of the frame structure 17.

In the casings 35, compression coil springs 36 are provided so that when the keys 37 are moved outwardly the hammers 34 go into action. Normally the hammer plungers 34 are held in the respective cylinder casings 20 by a

stopper mechanism

37, 39 which can be controled by other sources when necessary. Through the side of the casings 35 are keyholes 37 through which can slide key heads 39' forced by a spring 36. When the hammer plungers 34 are sufficiently raised within the casings 35 by the upward movement of the press 1 1, the key heads 39 are forced through the keyholes 37' in the casings 35 and into key slots 38 in the hammer plungers 34, thus stabilizing the plungers 34 while they are not in use.

On the top platen 12, anvils 40 are provided to receive the hammer heads 34 when the hammers 34 are made to drop. The key heads 39 are pulled out of the key 38 by electrical means against the springs 37 holding the key heads 39 with the slots 30 and the plunger hammers 34 drop onto the anvils 40. As the presss top platen 12 is raised, as shown in FIG. 12 the plunger hammers 34 return to a stopped position. In lowering of the top platen 12, the hammer plungers 34 remain in the stopped position. Then the hammers 34 are dropped on to the anvils 40 as required.

In general operation, the materials 30 in layers are placed on the supplemental second base board 26 and the cutting edge 31 of block pattern is placed thereon. If the materials to be cut are longer than the length of top platen 12, the supplemental second base board 26 slidable on the base board 13, is drawn out as shown in FIG. 3 to the extreme left end. First the base board is moved by activating the plunger 26' until it is stopped right under the top platen 12. The top platen 12 is lowered, and when the top platen 12 ceases to move further, the operating switch controlling the key heads 39 and the hammer action is energized, thereby pulling key heads 39 out of the holes 38 in the plungers through the cylinder casings 35 and the hammers 34 are dropped onto the anvils 40. Then the second shift of the supplemental second board 26 is made under the top platen board 12. The same action as above is repeated for the remaining half of materials, thus completing the cutting action on the materials. With the raising of the top platen 12 and pulling out of the base board 13 by the plunger 27 and the supplemental second board 26 by the hand grip 28, cutting the operation is completed.

The embodiments of the present invention specifically described and illustrated herein are examplary only, and are not intended to limit the scope of the present invention, which is to be interpreted in the light of the prior art and the appended claims only with due consideration for the doctrine of equivalents.

I claim:

1. A cutting apparatus for cutting a plurality of layers of materials, textiles, leather and the like, comprising: an upright standing frame having a lower portion with an operating surface thereon and an upper portion cantilevered over and above the operating surface of the lower portion;

base board means located on the operating surface for providing a cutting surface for cutting said materials;

cutting means comprised of cutting edges formed according to a desired block pattern and metal support rods and plates for framing said cutting edges in the desired pattern, said cutting means being placed on the material to be cut after the material is laid on said base board;

hydraulic press means mounted on said upper frame portion and cantilevered over said operating surface, said hydraulic press means having a top platen mounted thereto and opposed to said base board, said top platen being lowered into contact with said cutting means placed on said material by the downward motion of said hydraulic press means,

adjustable leveling means located on said top platen for keeping said top platen level,

plunger hammer means for supplying the force necessary to completely cut through said material, said plunger hammer means affixed to and hanging downward from said upper portion of the upright standing frame;

anvil means operatively positioned on said top platen to receive the force of the downward motion of said plunger hammer means after said top platen has been lowered into contact with said cutting means, said downward motion of the plunger hammer means against the anvil means being sufficient to cause the top platen to exert against the cutting means the force necessary to completely cut the layers of material into the shape of the cutting means. i

2. An apparatus as claimed in claim 1 wherein said cutting means is comprised of thin high speed steel band.

3. An apparatus as claimed in claim 1 wherein said hydraulic press means has two limiting switches adapted to operate in conjunction with the position of the top platen for controlling the raising and lowering of the top platen by the hydraulic press means.

4. An apparatus as claimed in claim 1 wherein said adjustable leveling means for said top platen is comprised of frame support fittings firmly fixed to the upright standing walls of said upper portion of the upright frame, top-flanged stop bolts slidably fitted into the support fittings, top platen fittings attached to said top platen and threaded to take the top-flanged stop bolts slidably fitted into the support fittings, and nuts for said top-flanged stop bolts for adjusting said top-flanged stop bolts in the fittings so that the top platen can be leveled.

5. An apparatus as claimed in claim 1 wherein said base board means comprises a stationary first board having guide grooves therein, a plurality of supports affixed to said lower portion of the upright standing frame for supporting said first board, and cylinderpiston means for reciprocally moving said first board under said top platen, said base board means further comprising a slidable second board movable along said guide grooves in the first board so as to extend out of said first board for handling larger pieces of material than would be possible with the stationary first board alone.

6. An apparatus as claimed in claim 1 wherein said plunger hammer means comprises a plurality of cylindrical casings firmly fixed to the upper portion of said upright standing frame, each cylindrical casing having therein a key hole;

a spring and a hammer head contained Within each cylindrical casing, each spring compressable by the upward motion of said hammerhead and each hammerhead having therein a key slot;

and a stop mechanism aligned with said key hole, having an extendable and retractable key head for going through said key hole and fitting into said key slot, and controlled by an outside source, whereby said hammerhead can be held in its upper position with the spring compressed by the key head going through said key hole and fitting into said key slot, and whereby removal of said key head from said key slot causes said hammerhead to be forced downward by said spring onto the anvil means of said top platen.

Claims

1. A cutting apparatus for cutting a plurality of layers of materials, textiles, leather and the like, comprising: an upright standing frame having a lower portion with an operating surface thereon and an upper portion cantilevered over and above the operating surface of the lower portion; base board means located on the operating surface for providing a cutting surface for cutting said materials; cutting means comprised of cutting edges formed according to a desired block pattern and metal support rods and plates for framing said cutting edges in the desired pattern, said cutting means being placed on the material to be cut after the material is laid on said base board; hydraulic press means mounted on said upper frame portion and cantilevered over said operating surface, said hydraulic press means having a top platen mounted thereto and opposed to said base board, said top platen being lowered into contact with said cutting means placed on said material by the downward motion of said hydraulic press means, adjustable leveling means located on said top platen for keeping said top platen level, plunger hammer means for supplying the force necessary to completely cut through said material, said plunger hammer means affixed to and hanging downward from said upper portion of the upright standing frame; anvil means operatively positioned on said top platen to receive the force of the downward motion of said plunger hammer means after said top platen has been lowered into contact with said cutting means, said downward motion of the plunger hammer means against the anvil means being sufficient to cause the top platen to exert against the cutting means the force necessary to completely cut the layers of material into the shape of the cutting means.

5. An apparatus as claimed in claim 1 wherein said base board means comprises a stationary first board having guide grooves therein, a plurality of supports affixed to said lower portion of the upright standing frame for supporting said first board, and cylinder-piston means for reciprocally moving said first board under said top platen, said base board means further comprising a slidable second board movable along said guide grooves in the first board so as to extend out of said first bOard for handling larger pieces of material than would be possible with the stationary first board alone.

6. An apparatus as claimed in claim 1 wherein said plunger hammer means comprises a plurality of cylindrical casings firmly fixed to the upper portion of said upright standing frame, each cylindrical casing having therein a key hole; a spring and a hammer head contained within each cylindrical casing, each spring compressable by the upward motion of said hammerhead and each hammerhead having therein a key slot; and a stop mechanism aligned with said key hole, having an extendable and retractable key head for going through said key hole and fitting into said key slot, and controlled by an outside source, whereby said hammerhead can be held in its upper position with the spring compressed by the key head going through said key hole and fitting into said key slot, and whereby removal of said key head from said key slot causes said hammerhead to be forced downward by said spring onto the anvil means of said top platen.