US2601432A

US2601432A - Felt punching machine

Info

Publication number: US2601432A
Application number: US126773A
Authority: US
Inventors: Arthur L Clements
Original assignee: American Hair & Felt Co
Current assignee: American Hair & Felt Co
Priority date: 1949-11-12
Filing date: 1949-11-12
Publication date: 1952-06-24
Anticipated expiration: 1969-06-24

Description

June 24, l'952 A. l.. CLI-:MENTS FELT PUNCHING MACHINE Filed Nov. 12, 1949 4 Sheets-Sheet l June 24, 1952 A. LL cLEMENTs 2,601,432

FELT PUNCHING MACHINE Filed Nov. 12, 1949 4 Sheets-Sheet 2 :Inventor l June 24, 1952 A. l.. cLEMr-:NTs 2,601,432

FELT PUNCHING MACHINE Filed Nov. 12, 1949 4 Sheets-Sheet 5 Snventor June 24, 1952 A. CLEMENTS FELT PUNCHING MACHINE:

4 Sheets-Shet 4 Filed Nov. 12. 1949 LTS."

nvenior @dem 5M Gttornegs As shown in Figs. 1 and 3, the shaft 34 is mounted in end bearings 31 and intermediate bearings 38. The end bearings 31 are mounted for lengthwise adjustment on the transverse frame members |1 by the clamping plates 31a and bolts 31h. The bearings 38 are mounted for lengthwise adjustment on the transverse frame members 39 by the clamping plates 38a and bolts 38h. The shaft 34 has balancing wheels 49 mounted thereon at each end and oppositely disposed eccentric cranks 4| adjacent each end.

The upper beam |9 is connected at each end for movement relative to the frame by parallel links or levers 42, one of the ends of each link being pivotally connected at 43 to an end plate |9c of said beam and the other end of said link being pivotally connected at 44 to the frame. The lower beam 26 is similarly connected by parallel links or levers 45 to the frame for movement relative thereto. An eccentric strap or connecting rod 46 is mounted on each eccentric 4|, and its lower end 41V is pivotally connected at 48 to a block 49 which is lengthwise adjustably mounted on the upper end of each of the

links

42 or 45 and is clamped thereto in adjusted position by bolts 58. Thus the drive through eccentrics 4| and their connections with the beams I9 and 20 acts to move said beams toward and away from each other, and the extent of their movement or stroke is controlled by the positioning of the blocks 49 at varying distances from the centers of oscillation of the

links

42 or 45, the lengthwise adjustment of the shaft 34 and the transmission 3| being made to accommodate the adjustment of said blocks 49.

A needle board provided with punching needles 52 is mounted against the lower face of the bottom plate |9b. In machines of this kind, needle breakage occurs sooner or later, so that in order to keep the machine operating, replacement boards must be availab-le and the replacement accomplished as quicklyV as possible. Means are accordingly provided for releasably clamping the needle board 5| to the beam |9, see Figs. 1, 2, and 4, comprising a series of spring engaged clamps for opposite sides of the board, and means for quickly releasing these clamps. Each clamp comprises an angled clamping plate or jaw 53 carried on the beam I9 and slidably guided by bolts 54 working in vertical slots 55 in said plate. Each plate 53 has a vertically disposed tappet or headed plunger 56 anchored thereto by nuts 51 and slidably extending through an angle iron guide bracket 58 secured to the beam. A spring 59 is interposed between the bracket 58 and the head of the plunger 56, so that each clamp is held in spring tensioned engagement with the outer edge of the bottom of the board 5|. For quickly releasing all the clamps, spaced cam shafts 60 are journalled in spaced bearings 6| mounted on the beam, and each shaft has a series of cams 62, one for each plunger 56 whereby turning said shafts 66 will cause the cams 62 to move the tappets or plungers 56 and consequently the plates 53 downwardly against the pressure of the springs 59 to permit withdrawal of the damaged board and replacement with a new one. For simultaneously operating the shafts 66, each shaft is provided with a centrally disposed worm wheel 63 meshing with a worm 64 on a shaft 65 journalled on the beam I9 and extending transversely thereof and provided with a removable operating hand crank 66, whereby turning said shaft 65 by the crank 66 will rotate the shafts 66 in the Y an upright rod 12.

4 desired direction to either release the spring pressure or permit it to hold the clamps 53 in operative position.

The felt bat to be punch felted is introduced between the bolster or grid 20c and a fixed upper grid 61. As shown in Figs. 7, 8, and l0, the

grid 61 comprises a marginal frame 61a and ak series of round grid rods 61D. Each rod 61h at its ends is anchored to the frame 61a by its mounting in a bore 68 of the head of a bolt 69 clamped to the frame 61a by a nut 10. The grid frame 61a carries a series of spaced brackets 1| on opposite sides thereof, each of which carries Each rod 12 has its upper end working in a cylinder 13 fixed to the frame of the machine and carries an arm 14 connected to a shaft 15 by a toggle linkage comprising spaced crank arms 16 mounted on the shaft 15 at its side of the machine and pivotally connected by a pin 11 to one end of a link 18 whose other end is connected by a pin 'I9 to the arm 14. Each shaft 15 is oscillated by a crank handle 89 secured thereto. When the shaft 15 at the right in Fig. 4 is turned counterclockwise and the shaft 15 at the left turned clockwise to throw the toggle linkages over dead center, as shown in Fig. 4, the stripper grid 61 is held in its operative relatively fixed position with the arms 14 abutting rubber collars 8| interposed between them and the cylinders 12. When the right hand shaft 15 is turned clockwise and the left hand shaft turned counterclockwise, the toggles are broken and the rods 12 are moved downwardly by the linkage above described to move the grid 61 downwardly to a position in which it is clear of the needles 52 on the board 5| to permit replacement.

The punched felt is removed from the machine by a pair of longitudinally extending pull-out rollers 82, extending lengthwise of the machine and one of whose end mountings is shown. The lower roller is journalled at its end in bearings 83 mounted on the frame of the machine. The upper roller 82 is mounted at its ends in journals 84 which are slidably supported on xed rods 85, carrying springs 86 acting to move said journals downwardly to bring the rollers 82 into operative feeding relation with the punched felt F.

The lower roller is driven from one end by a sprocket 81 on the shaft for said roller connected by a chain 88 with a sprocket 89 mounted on a shaft 90 mounted on the frame and which may be driven in any suitable manner as by a chain and sprocket drive connnection 9| with the shaft 34, as shown in Figs. 1 and 3. For quickly releasing the pull-out rolls 82 from driving relation, a toggle linkage including links 82a and 82h operatively connected together and to the shaft for said rollers is provided, one of the links 82h provided with a handle 82o.

For removing dust and' bre that results from the punching operation, an endless spaced flight conveyor 92 is mounted at the base portion of the machine beneath the power beams and runs over rollers 93, one of which is driven by a chain and sprocket drive connection 94 with a speed reducer 95 associated with a drive motor 96.

For punching various types of stock, the spacing of the grid bars 91 of the lower grid structure 20c and their width have to be varied. To permit of ready changing of this spacing and the bars, each grid bar 91 has a notch 98 at each end extending down from its top and a two part marginal frame comprising a plane base frame part 99 and avnotched top frame part |00 secured together by machine screws l| is provided. The notches |02 are milled in the part |09 at the desired angle, and this part is undercut, as shown in Fig. l0, to provide a recess |02a. to receive the extension |04 of the notched end of the bar 91 which is clamped in operative position when the two parts 99 and 100 are clamped together by the screws |0l. It is also to be noted that each grid bar 91 tapers downwardly on both sides so that its bottom edge is of less thickness than its top edge, thus forming a space |03 between the grid bars of gradually increasing size toward the bottom of the grid which greatly aids in preventing clogging of the spaces between the bars during the operation of the machine.

The general operation of the machine is similar to that shown in the prior Phillips Patent No. 2,004,709, one or more fibrous bats, either with or without reinforcement is conveyed by a conveyor, such as shown in Fig. 3 of said patent, between the lower and upper grids. While the bat or bats is or are slowly fed through the machine, the shaft 34 is rotated causing the oscillatory movement of the beams i9 and 20 and consequently the needle board l and the grid 29C, respectively connected to said beams as previously described. During this movement the grid c moves upwardly toward the stripper grid El compressing the bat between these parts, and as said grid 20c moves upwardly, the needle board 5I moves downwardly forcing the barbed needles into and through the bat, so that the fibres thereof are efficiently interlocked with each other and then, as the grid 20c moves downwardly, the needle board 5| moves upwardly and the needles 52 are, with the aid of the upper stripper grid E1 which holds the stock against upward movement, withdrawn from stock. This cycle is repeated with great rapidity, and it is to be noted that unlike the prior patented structure as the beams I9 and 20 are moved toward each other, the springs and 29 act to absorb shocks.

The conveyor 92 discharges the waste into a pit or discharge chute below the drive end of said conveyor and indicated at E04.

I desire it to be understood that this invention is not to be limited to any particular arrangement or construction of parts except in so far as such limitations are included in the appended claims.

What I claim as my invention is:

1. In a felt punching machine, the combination of a frame, a needle board carrying power beam, a bolster carrying power beam, oscillatory levers respectively connecting the ends of each power beam to said frame, a drive shaft mounted on said frame and having oppositely disposed eccentric cranks at the ends thereof, connecting rods operatively connecting said cranks to the intermediate portions of said levers, means for adjusting the points of connections of said connecting rods lengthwise of said levers, and means for adjusting said drive shaft relative to said frame in accordance with the adjustment of said rods on said levers to vary the stroke of said power beams relative to each other.

2. A felt punching machine as denned in claim 1 wherein a pair of oscillatory levers is respectively connected to each end of each power beam and to said frame and the connecting rods are connected to one of each pair of said levers.

3. In a felt punching machine, the combination of a reciprocatory power beam, a needle board, and means for detachably securing said needle board to said frame comprising a series of clamps engageable with said board, spring means for holding said clamps in clamping position, and rotatable means mounted on said beam and engageable with said clamps for simultaneously relieving said clamps of holding pressure of said springs.

4. In a felt punching machine, the combination of a reciprocatory power beam, a needle board, means for detachably securing said needle board to said frame comprising a series of clamps at each side of said board for holding the board against said beam, spring operated means for moving said clamps to clamping position. cam means for moving said spring operated means to a clamp release position, and means for simultaneously operating all of said cam means.

5. In a felt punching machine, a grid structure comprising a two part marginal frame and grid bars, one of said parts being notched to hold said grid bars in spaced relation and also being recessed below said notches, the ends oi said grid bars being notched to engage in said recessed portion of said parts, and means for clamping the parts of said frame together with the notched portions of said bars between them.

6. In a felt punching machine, the combination of a needle board carrying power beam, a bolster carrying power beam, a relatively fixed grid cooperating with said needle board and bolster, means for moving said power beams toward and away from each other, a pair of pullout rollers for the punched stock, means for driving one of said rollers, a movable support for the other of said rollers spring means acting on said support for yieldingly urging said other roller into feeding relation with said driven roller, and toggle linkage means connected with said movable support for quickly moving said yieldingly mounted roller out of feeding relation with said driven roller and against the pressure of said spring means.

7. In a felt punching machine, the combination of a frame, a reciprocatory power beam, a needle board detachably mounted on said beam, a strip- ARTHUR L. CLEMENTS.

REFERENCES CITED f The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,208,719 Maussner Dec. 12, 1916 1,326,236 Wagner Dec. 30, 1919 1,706,535 Marble Mar. 26, 1929 2,004,725 Johnson June 11, 1935