SU84545A1 - Automatic punching machine for making hacksaw blades - Google Patents

Description

The well-known automatic joint-day machines for the continuous production of steel-blade hacksaw blades are structurally complex and do not ensure uninterrupted operation of mechanisms in the process:) xyluation. One of the most serious defects of such machines is usually a violation of the synchronism of the operation of the feed-1x belt of mechanisms with the work of cutting dies.

Due to these shortcomings, automatic shtavovochnye machines for full continuous production of hacksaw blades did not receive widespread distribution.

In the described stamping stack, the noted drawbacks are largely eliminated as a result of the fact that the periodic feed of the tape is provided without the use of separate feed mechanisms, and the use of a punch for punching holes and cutting the tape, which is made reciprocally movable along the tape. each next working stroke punches stamp.

FIG. Figure 1 shows the kinematic diagram of an automatic punching machine for the complete continuous production of 1I1 knife belt webs; in fig. 2 is a longitudinal section of a stamping machine; in fig. 3-section of the machine on aa and pa of fig. 2; in fig. 4-section machine but bb pa fpg. 2; in fig. 5-section of the machine but bb in FIG. 2

Shtnovochnochn1 p 1 machine (Fig. 1 and 2) consists of three sequentially placed along the movement of the tape (in the direction of the arrow K) independent stamping units /, // and //, driven is a synchronous periodic movement from the drive shaft / by means of cam mechanisms . The drive shaft receives an equal. Dimensional uninterrupted rotation from the electric motor L through a belt drive 2 and a gear train 3.

The supply of steel tents to the machine is carried out

No. 84545-2-

riot and made periodically after each double stroke stamping tools, which carry out the simultaneous cutting of zhbtsov, teeth separation, punching holes and cut the finished design cloth on various consecutive parts of the tape, passing through the entire punching machine.

The die agpegat / carries out cutting of teeth in the belt and is made in the form of two parallel cylindrical combs 4 and 5 (Fig. 3) with mutually recurring teeth of height h equal to the height of the teeth of the hacksaw blade.

The combs are mounted on rollers 6 and 7, the iric comb 5 is fixed and the comb 4 is rotatable relative to the axis of the roller 6 by means of a swinging arm 8 associated with it. The lever 5 ujapHHpHO is engaged 13 (9 with a rocker relative to axis 10 with a spring-loaded rocker arm 11). roller 12 of which interacts with a rotating cam 13 mounted on an anti-roll shaft 1. When the comb 4 rotates in the direction of arrow H, its teeth displaced by half a step relative to the teeth of the combiik 5 cut down the tooth on the cast that passes between the ridges in the guide slot 14.

The punching unit // divides the teeth of the hacksaw blade into a predetermined well. The punch 15 and the matrix 16 of the adjustable punch (FIG. 4) are made in the form of two iaras. Pelted cylindrical rollers provided with a screw thread, the profile of which corresponds to the profile of the teeth of the molding blade. The rollers are arranged so that, against the cavity of one w.tpke, there is a threaded protrusion on the other. Roller-matrix 16 is fixed in foam-like nlit 17, and valinknuanson 15 is connected with spring-loaded n; 1 on it 18 swinging on axis 18;

To dislodge the teeth after cutting them on the tape, which passes between the rollers and is guided into the groove of the bar 20, the plate 19 rotates under the action of two rolls on the axis 21 of the spring-loaded arms 22, the upper arms of which are connected by sliding hinges with the plate 19 and the lower shoulders through the rollers 23 interact with the cams 24, iasazhennyh on the drive shaft /.

In addition to the working movements of the plate 19, the entire adjustable stamp mounted on the plate 17 may be made in the longitudinal direction of the relative} Yu. Aeite pa velchiiiu with a single tooth pitch. This movement is necessary due to the fact that the pitch of the teeth of cutting in the rollers 15 and / is recommended to be equal to twice the pitch of the teeth of the hacksaw blade (due to the small size of the latter).

Thus, the process of breaking all the teeth on the tape along the length of the cut part of the rollers is carried out in two working strokes of the punch 15, which is ensured by the corresponding shape of the cam 24.

The longitudinal movement of the punch is carried out in the guides 25 of the machine bed by means of a spring-loaded pusher 26 (Fig. 2), controlled by a cam 27 mounted on the drive shaft.

The stamping unit /// is designed for cutting holes in the tape and lengths of the finished hacksaw blade. In addition to this operation, the machine periodically feeds the tape to the length of one hacksaw blade, thereby eliminating the need for any separate mechanisms for feeding the tape and ensuring strict synchronism of the working movements of all the units and movement of the tape.

The entire cutting stalmn (Figs. 2, 5) is mounted on the plate 29, movably) along the bed guides 28.

The shtampa matrix 30 is mounted on the plate 29. On the slider 31, three punches are fixed, of which two 32 and 33 are for cutting

holes along the cattle ......, of the neighboring joints of the canvases, and the middle punch 34, made in the form of a flat knife, for cutting the ribbon at the junction of two saw blades.

The working movement of the slider 31 with poop punches is effected by means of the swinging yoke 35, placed on the axis of the column 36. The yoke 37 is driven by a connecting rod 38 which is hinged to the connecting rod 38, which is eccentrically curved on the drive shaft. After the end of the working stroke, the i.chchp ./ is held in the lower position by a spring-loaded latch 40, whereby the end of the tape is held between the matrix and the upper slider.

The plate 29 is connected with the bar 4, the rocker on the axis 42, fixed p, on the frame of the machine. T ha by means of a roller 43 interacts with an end cam 44 mounted on a drive Ba; iy /. Under the action of the cam, when it rotates, the ha moves from position to position, pulling plate 29 along with it. The belt moves along with the seal, which is held on the core by punch 33. When plate 29 comes to the left extreme position, the stop 45, padai. on the bevel 46 of the striker 40, it releases the slider 31, which, under the deformation of the springs 47, rises up along with the iwanopi, freeing the end of the tape.

With further rotation to the luggage 44 t ha 4}, the action of the spring 4S retracts the plate 29 with the stamp to its original working position and the whole cycle repeats again.

PREd. M et and z about b ete n i

Claims (5)

1. An automatic punching machine for making hacksaw blades of ribbon, consisting of separate units controlled by cam mechanisms from a common drive on successively cutting teeth, pinning the teeth, punching holes n cutting Shch and with the fact that, in order to ensure the periodic feeding of the mite without the use of separate feeding mechanisms, the piercer for punching holes and cutting the tape is made reciprocating, 1X10 is movable to move it. working hours nunson schtama. 2. The form of making the stamping pile according to item I, is different from that, in order to hold the chords during the longitudinal stroke of the stamp, the fixed plate of the shtampa is provided with a folding spring-loaded dog, which fixes the top plate of the shtampa in the lower part of the m, 1bearing before the entrenchment H1 of the next longitudinal course of the stamp. 3. The stamping machine according to pi. 1 and 2, about t.i and h and yushchi and with the fact that, in order to carry out the divorce of each tooth of the hacksaw blade, the nail is at a different step of the teeth of the adjustable punch, the strain is made reciprocatingly moving The shape of one tooth pitch. 4. The form of shtyamovochny machine tool according to claim 3, dated. 1 st. With the fact that tiyancoH and the matrix of the divorced stamp are made in the form of parallel cylindrical rollers, equipped with a screw thread, the profile of which corresponds to the prof. Teeth of the shaving cloth. 5. Stamping machine by rni. 1,2,3 and 4, about tl and h a1, y i and so that the blunt stamp is made in the form of two parallel-parallel cylindrical combs with teeth mutually overlapping each other, one of which is a reciprocating-turning node take cam gear. -3-, № 84545 4 5 Fig j ".E. If