JP3124817B2 - A continuous rod machine with multiple beaters for softening and extending industrial leather. - Google Patents

Abstract

A machine with multiple beating plates for softening and stretching industrial hides and the like including conveyor belts (3,4) for advancing the hides between a plurality of upper beating plates (6, 6'') which face an equal number of lower beating plates (7', 7'') adapted to form adjacent pairs in the hide advancement direction. Each plate is provided with protrusions (10', 10'') adapted to cooperate with complementary recesses (11', 11'') defined on the opposite plate. Each pair of facing plates includes a movable plate and a fixed plate. Motors (M', M'') alternatively move each movable plate toward and away from the respective fixed plate. Synchronization pulleys (21', 21'') are provided which act on the motors in order to equalize the oscillation frequencies of the adjacent movable plates. <IMAGE>

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine provided with a multi-beating plate for softening and stretching industrial leathers, which machine is used to move an adjacent pair of beaters in the forward direction of the leather. A machine of the type consisting of leather advance means interposed between a plurality of upper beaters facing the same number of lower beaters, as formed. In each pair of facing plates, one of the plates is fixed, the other plate is movable, and the movable plate alternately moves toward and away from the facing fixed plate by suitable motor means. You can do exercise. In a known manner, each plate has a projection which is adapted to operate with a complementary recess provided in the opposing plate.

[0002] These machines produce leather fibers that have been subjected to a stretching operation, which is known as a continuous rod operation, which, after drying, returns the leather to softness and flexibility. Applied.

[0003]

2. Description of the Related Art Italian Patent No. 8
In the connecting rod machine disclosed in 83012, a pair of beating plates is used. In order to increase the capacity and productivity of this known machine, a series of multi-beating plates arranged one after the other in the direction of advancement of the leather are used. The motor for each individual beater is also used to limit the power and volume of the motor mounted.

[0004] While this type of machine offers significant functionality and high productivity benefits, it does have some generally accepted problems. As a practical matter, the motors that actuate each beating plate are of the same type, but these motors have differences in rotational speed and maximum transmission force, and therefore have the exact same vibration frequency for each type of beating plate. There is no guarantee. Furthermore, due to the vibration of this beating plate,
The support frame of the machine as a whole is subject to considerable vibrations, which are only partially damped by the eccentric mass and the vibration damping support. Due to the difference in vibration frequency, these plates tend to lose their synchronization until they periodically come in phase, even if they are initially in the same phase position. is there. The machine is thus periodically exposed to resonance peaks with sharp wobble and some noise.

[0005] After a certain period of time, this resonance forces the support structure of the machine to break, especially at the welds, resulting in a reduced life expectancy.
At other times, there is a need for repair and interference in machine operation.

[0006] In order to prevent the danger caused by the vibration of the mechanical structure due to this resonance phenomenon, the frequency of vibration of the beating plate is approximately 550 to 570 beats per minute. That is.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned problems by providing a single-rod machine, which has a maximum quietness and uniformity of operation and a high altitude. It is a continuous rod machine with multiple beating plates with the characteristics of reliability and productivity.

Among the aims of the present invention described above is a particular object of the present invention, which is to provide a continuous rod machine with multiple refining plates which prevents resonance during the vibration of the refining plates. is there.

It is a further object of the present invention to provide a continuous rod machine with a multi-beating plate which uses a higher vibration frequency than that of a conventional multi-beating plate and does not cause resonance due to the vibration. It is in.

[0010] For other objects whose objects will become apparent herein, this object is achieved by a continuous rod machine with multiple beaters for industrial leather and the like, wherein the continuous rod machine comprises: A support frame, said support frame supporting means for leather advancement, including a plurality of upper beaters;
Said upper beaters facing the individual lower beaters to form an adjacent pair of boards in the leather advance direction;
Each of the plates has a protrusion that fits into a recess having a complementary shape, the recess is formed on the opposite side of the plate, and each pair of facing plates has a movable plate and a fixed plate. And a motor means provided on the movable plate to actuate the movable plate, which alternately moves toward and away from the fixed plate. Synchronizing means acting on the motor means to balance the vibration frequency of the plate.

[0011] A second aspect of the invention is that the synchronization means is selected so as to keep the alternating movement of the adjacent plates constant out of phase.

Further features and advantages of the present invention are set forth in the accompanying description of a preferred but non-exclusive embodiment of a machine with multiple beaters according to the present invention, illustrated only by way of non-limiting example in the accompanying drawings. Will be obvious.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS With particular reference to FIG. 1, a connecting rod machine according to the present invention indicated by reference numeral 1 includes a support frame 2, which is made of a strong steel beam and has a pair of conveyor belts. Supporting the leather advancing means constituted by 3 and 4, these conveyor belts have adjacent parts which take in the leather P to be treated and make contact with each other.

The pair of beaters, designated by the reference number 5, are arranged on opposite sides of the belts 3 and 4 opposite the adjacent parts. In the illustrated embodiment, two pairs 5 'and 5''
However, their number can be increased according to the requirements for increasing the productivity of the machine. In particular, each pair consists of an upper plate 6 and a lower plate 7 which are respectively arranged on opposite sides of the leather to be treated. The first pair of plates 5 'is formed by an upper plate 6' arranged opposite the lower plate 7 ', whereas the second pair 5 "is formed by an upper plate 6' facing the lower plate 7". ''.

In a known manner, upper plates 6 'and 6''
Are hinged to the supports 9 ′ and 9 ″ mounted on the support frame 2 by the arms 8 ′ and 8 ″. Upper plates 6 'and 6 "further comprise projections 10' and 10" cooperating with complementary shaped recesses 11 'and 11 "formed in lower plates 7' and 7".
Is provided.

The motor means is moved toward and away from the fixed plates 7 'and 7''so as to cause the mutual engagement and release between the projections 10' and 10 '' and the recesses 11 'and 11''. The movable plates 6 ′ and 6 ″ are provided around the fulcrums 9 and 9 ″ so as to vibrate at a selected size and frequency. The motor means comprises a pivot 1
It can be constituted by connecting rods 12 'and 12''connecting3' and 13 '' to the cranks 14 'and 14''. Pivot 1
3 'and 13 "are rigidly connected to plates 6' and 6".
The cranks 14 'and 14''are respectively associated with the main shafts 15' and 1
It is firmly connected to 5 ''. These shafts are rotatably mounted on the support frame 2 and are rotated by respective motors M 'and M''by suitable transmission belts 16' and 16 ''.

Advantageously, to balance the operation of the machine, the individual flywheels 17 ′ and 17 ″ are fixed to the individual spindles 15 ′ and 15 ″ and have an eccentric mass 1 ′.
8 'and 18''. Flywheel 17 ',
17 '' may optionally have lightening holes 19 ', 19''which are configured to balance the plate motion and at least partially reduce mechanical vibration. I have.

It is a feature of the present invention that a synchronization means 20 is provided, which acts on the motor means to balance the vibration frequencies of the adjacent beating plates 6 'and 6''.

FIG. 2 illustrates a first embodiment of the synchronizing means 20, which comprises axes 15 'and 1
A pair of toothed pulleys 2 each keyed to 5 "and joined together by a suitable toothed belt 22
Consists of 1 'and 21''. A tensioning roller 23 can be provided to keep the toothed belt 22 under constant tension. The pulleys 21 'and 21''are selected to have the same diameter and the same number of teeth, so that the shafts 15' and 15 ''
Is 1: 1. It is further noted that these pulleys are keyed at an angle on shafts 15 'and 15 "to keep the cranks 14' and 14" exactly in phase.

In a second embodiment illustrated in FIG. 3, the synchronization means comprises a transmission shaft 24 on which terminal gears 25 'and 25''are keyed, said gear comprising a shaft 15'. '
And gears 26 'and 26''which are rigidly connected to the gears 15' and 15 ''. Again, the transmission ratio is chosen to be equal to 1: 1 and the cranks 14 'and 14''are in opposite phase.

Synchronizing means 2 indicated by a broken line in the left part of FIG.
It is obviously possible to further comprise 0 ', whereby it is intended to also balance the rotational frequency of the third beating plate 6''', also schematically shown in broken lines in FIG. ing.

In use, the rotational frequency of the shafts 15 'and 15 "and any of the other main shafts is exactly the same, whereas the crank is the beating plate 6',
The vibrations of 6 '' and 6 '''are oriented to be kept out of phase during operation of the machine.

As a practical matter, it has previously been observed that the machine according to the invention achieves its intended aims and objectives completely, and in particular the resonance typical of conventional multi-beater machines. It is observed that this machine eliminates the phenomenon. Determining that this machine can operate at a higher speed, at a frequency of around 650 hits per minute (slapping work), and without any resonance phenomena, with a productivity increase of approximately 20%. Is also possible. Machines constructed in this manner are subject to numerous modifications and changes, all of which are within the scope of the inventive concept as determined by the appended claims. The transmission element parts thus included in the synchronization means can be replaced by equivalent devices, such as cardan shafts and universal joints, or hydraulic or electric transmission devices or equivalent devices, which are claimed in the appended claims. Within the scope of the claimed inventive concept. Instead of a plurality of motors connected to individual spindles, it is further possible to have a single motor connected to all spindles by suitable transmission element parts.

[Brief description of the drawings]

FIG. 1 is a partial side view of a continuous rod machine according to the present invention.

FIG. 2 is a detailed view of the machine part of FIG. 1 delimited by a dashed line.

FIG. 3 is a diagram of a second embodiment of the part shown in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Connecting rod machine 2 ... Support frame 3, 4 ... Conveyor belt 5 ... Beating plate pair body 6, 6 ', 6 "... Upper beating plate 7, 7', 7" ... Lower beating plate 8 ', 8''... arm 9', 9 "... support 10 ', 10" ... projection 11', 11 "... recess 12 ', 12" ... connecting rod 13', 13 "... pivot 14 ', 14''... Crank 15', 15 "... Spindle 16 ', 16" ... Transmission belt 17', 17 "... Flywheel 18 ', 18" ... Eccentric mass 19', 19 "... Lightweight hole 20 ... Synchronizing means 21 ', 21 "... toothed pulley 24 ... transmission shaft 25', 25" ... terminal gear 26 ', 26 "... gear

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 48-59771 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) C14B 1/40

Claims (7)

(57) [Claims] 1. A continuous rod machine with a multi-beating plate for industrial leather, comprising a support frame, said support frame (2) supporting means for leather advancement (3 and 4), Upper beating plate (6 '
And 6 '") wherein the upper beaters are individually lower beaters (7' and 7 '") so as to form adjacent pairs (5' and 5 '") of the boards in the leather advance direction. And each of said plates comprises a projection (10 'and 10''') which fits into a complementary shaped recess (11 'and 11''') formed on the opposite side of said plate; Each pair of facing plates has a movable plate (6 ′, 6 ′ ″) and a fixed plate, and the movable plate that alternately contacts and separates from the fixed plate (7 ′, 7 ′ ″). Motor means arranged to act on the movable plate to actuate the plate, the motor means being connected to elemental components for converting this rotational movement into an oscillating movement of the movable plate. At least one electric motor, the component parts of which are the main shaft (15 ', 15'''), the connecting rod and the crank (1) for each movable plate.
4 ', 14'''), wherein the motor means comprises a synchronizing means (20) so as to equalize the vibration frequency of the movable plate (6 ', 6'''). ,
The synchronizing means (20) comprises a transmission element part interposed between the main shaft (15 ''') of each pair of beater plates and the main shaft (15''') of the adjacent pair, and the alternation of each movable plate. A continuous rod machine that constantly maintains movement in the opposite phase. 2. The connecting rod machine according to claim 1, further comprising a transmission element component having a transmission ratio of 1: 1. 3. The transmission element component according to claim 1, wherein the angular offset between the cranks (14 ′ and 14 ′ ″) of all the adjacent main shafts is equal to 180 °. The connecting rod machine as described. 4. The toothed pulley (2) is keyed on adjacent spindles (15 ′ and 15 ″) and connected by a suitable toothed belt (23).
The connecting rod machine according to claim 1, wherein the connecting rod machine comprises a pair of 1 'and 21''). 5. The motion transmission element component includes a transmission shaft having a bevel gear pair, a cardan transmission shaft or the like, and an electronic speed controller having a 1: 1 transmission ratio and the like. The connecting rod machine according to claim 1, wherein the connecting rod machine is selected from among them. 6. Each movable beating plate (7 ′, 7 ′)
2. The connecting rod machine according to claim 1, wherein each of '′) is operated by a single motor (M ′ and M ′ ′). 3. 7. The connecting rod machine according to claim 1, wherein one common motor is provided for all movable beating plates (7 ′, 7 ′ ″).