JPH0626497Y2 - Conveyor for sewn material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a conveying device for sewing fabrics in a sewing system, and more specifically, to an automatic sewing fabric between sewing processes. The present invention relates to a device for transporting.

(Prior Art) In a conventional device of this type, for example, the device disclosed in FIG. 1, a drive pulley J driven by a motor C provided in an upper box B of a first pedestal A, and Two
An endless belt G is stretched between a driven pulley F that is rotatably supported on an upper plate E of a cradle D, and the endless belt G is driven in the direction of the arrow as the motor runs.
When one worker places the article to be sewn H on the endless belt G in the previous step, the article to be sewn H is conveyed to the subsequent step by the endless belt G due to the frictional force with the endless belt G generated by its weight. When the sewing object H comes into contact with the sensing device I, the operation of the motor C is electrically stopped, and the sewing object H also stops at that position and waits. When removed, the sensing device I self-returns to its original state,
The motor C is restarted and the endless belt G is also restarted.

As another conventional technique, as shown in FIG. 2, a pair of drive pulleys J and J'and driven pulleys F and F'are provided respectively, and the power of the motor C is transmitted to the drive shaft L via the timing belt K. , Drive pulleys J, J'are rotated to drive a pair of endless belts G, G 'stretched between driven pulleys F, F'. This kind of technology is suitable for transporting sewn objects such as heavy objects / complicated shapes, plate-shaped objects, bulky objects, etc. Of course, the sensing device that controls the automatic operation / stop of the endless belts G, G ′ is shown in the figure. Although omitted, it operates similarly to that of FIG.

(Problems to be Solved by the Invention) In the prior art shown in FIGS. 1 and 2, the drive pulley J depends on the power of the motor C in the case of (a) as shown in FIG. , Rotates in the clockwise direction, drives the endless belt G, the workpiece H contacts the sensing device I, the power of the motor C is cut off, and the drive pulley J and the endless belt G are stopped.

However, it is preferable that the sewn material H is lightweight, but if there is a heavy weight, the endless belt G is deflected by the weight of the sewn material H as shown in (b), and the endless belt G receives an acting force in the non-driving direction and returns. Then, the drive pulley J is rotated counterclockwise. As a result, the sensing device I self-returns to its original state, the motor C is restarted, and the endless belt G is also restarted. Unless the worker removes the sewing target H in a timely manner, this conventional device repeatedly operates in the states (a) and (b), and the switches in the sensing process I repeat unnecessary switching. The power consumption also increases, and problems such as friction due to the unnecessary driving of the endless belt G occur.

Then, this invention makes it a technical subject to solve these problems.

[Constitution of device]

(Technical Solution for Solving Problems) Between the motor and the drive pulley, the power from the motor side to the drive pulley side is transmitted, but the power from the drive pulley side to the motor side is not transmitted. ,
It is connected by a non-reversible mechanism.

(Operation) Therefore, when the endless belt is in a stopped state due to the contact with the sensing device, the motor power is cut off, the driving force does not act, and the endless belt bends due to the heavy weight of the workpiece. Even if an action force such as returning is applied, the power is not transmitted from the drive pulley side to the motor side, and the reverse rotation of the motor is blocked, so that the power is not repeatedly turned on and off repeatedly. The stopped state of the endless belt is maintained, and the object to be sewn also waits until the worker in the subsequent step removes it, thereby eliminating the problems of the prior art.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

A box 12 is fixed to an upper portion of a first support column 11 that is vertically fixed to the first pedestal 10.

The motor 13 arranged in the box 12 is fixed to the box 12 via a bracket 18, and the worm gear 15 is fixed to the shaft 14 of the motor 13, and the drive shaft 1 supported by the bracket 18
It meshes with a worm wheel 17 fixed to the central part of 6.

A pair of front and rear drive pulleys 25 and 26 are fixed by set screws 27 and 28 near the front and rear ends of the drive shaft 16 protruding from the bracket 18 in the front and rear direction, respectively.

On the other hand, similarly to the first receiving table 10, the second receiving table 29 facing the first receiving table 10 with a predetermined space or distance is provided with the bearing body 31 on the upper part of the second upright fixed pillar 30. The pair of pulley shafts 32 are fixedly mounted on the bearing body from the front-rear direction,
33 is loosely fitted and fixed to the bearing body 31 with set screws 34 and 35.

A pair of front and rear driven pulleys 36 and 37, whose axial movements are restricted by a front end flange portion and a facing shoulder portion, are rotatably loosely fitted to both end portions of the pulley shafts 32 and 33, respectively. , 37 is the same as the distance between the drive pulleys 25, 26.

The first pedestal 10 and the second pedestal 29 are respectively provided with a pair of left and right casks 38, 39 that extend inwardly facing each other and have a hollow rectangular cross-sectional shape, and the opposing end face openings thereof. From 棧 3
Angle-shaped connecting rod 4 slidable in the left and right directions in the hollow parts of 8 and 39
0 is inserted, and its relative position is determined by a pair of left and right first adjusting screws 41, 42.

Further, a pair of left and right intermediate pulley bases 4 are provided on both the shafts 38, 39.
Reference numerals 3 and 44 are slidably fitted in the left and right directions, and the relative positions thereof are determined by a pair of left and right second adjusting screws 45 and 46.

At the front and rear ends of the two intermediate pulley bases 43 and 44, the left intermediate pulley base 43 has left intermediate pulleys 47 and 48, and the right intermediate pulley base 44 has right intermediate pulleys 49 and 50. The respective axial distances of the intermediate pulleys 47, 48 and 49, 50 are rotatably supported, respectively, and are adjusted to the axial distances of the drive pulleys 25, 26 and the driven pulleys 36, 37 described above.

A pair of supporting arms 51, 52 and 53, 54 project in the front-rear direction from the vicinity of the roots of the first supporting column 11 and the second supporting column 30, respectively, and an intermediate pulley 55, at the front and rear ends of the supporting arms 51, 52.
56 is an intermediate pulley 5 at the front and rear ends of the supporting arms 53, 54.
7, 58 are rotatably supported respectively, and the intermediate pulley 5
The respective axial distances of 5, 56 and 57, 58 are the drive pulleys 25, 26 and the driven pulleys 36, 3 described above.
It is adjusted to the axial distance of 7.

An endless belt 59 is provided between the drive pulley 25 and the driven pulley 36 via intermediate pulleys 47, 49, 55, 57, and similarly, intermediate pulleys 48, 50, 56, 58 are provided between the drive pulley 26 and the driven pulley 37. The endless belts 60 are stretched via the respective ends.

Reference numeral 61 denotes a sensing plate, which is in the movement locus of the endless belt 59 and whose lower portion is pivotally attached to the lower portion of the left end surface of the box 12 and receives a weak elastic force when it is inactive and stands upright as shown. Held in.

As will be described later, the sewn object 62 placed on the endless belt 59 is conveyed by the belt 59 and comes into contact with the sensing plate 61, and the elastic force is resisted by the frictional force between the endless belt 59 and the sewn object 62. Then, when the sensing plate 61 is rotated, the normally closed micro switch 63 shown in FIG. 7 is turned off.

When the article 62 to be sewn is removed from the endless belt 59, the sensing plate 61 self-returns to the upright state by the elastic force, and the micro switch 63 is turned on.

Further, as can be seen from the circuit diagram shown in FIG. 7, the motor 13 forms a series circuit with the normally open main switch 64, the normally closed micro switch and the power source 65, and normally,
The belt is driven only by closing the main switch 64.

The article-to-be-sewn conveying device having the above-described structure is installed between the sewing steps such as the sewing device and the cutting device to convey the article-to-be-sewn.

First, when the main switch 64 is turned on, the motor 13 is driven in the series circuit shown in FIG. 4, and the endless belts 59 and 60 are the worm gear 15 and the worm wheel 1.
7, drive shaft 16 and drive pulley 25,
It is driven in the direction of the arrow (upper right direction) all at once via 26.

Of course, the endless belt 59 is the intermediate pulleys 47, 49, 55,
The endless belt 60 is connected to the intermediate pulleys 48, 5 through 57.
Driven through 0, 56, 58.

Then, for example, even if a sewn manufacturer places a relatively hard and long front and rear sewn object 62 'such as a seat and artificial leather on both belts 59, 60 as shown in FIG. 60 is conveyed at the same speed through the timing belt 24, and will not be displaced or dropped due to a speed difference during the conveyance. Then, the sewn object 62 'comes into contact with the sensing plate 61, and the sensing plate 61 is rotationally displaced to turn the normally closed micro switch 63 into the OFF state to stop the motor 13 and the belt 5
Stop 9,60.

Next, when the operator removes the sewing target 62 'from the belts 59 and 60 at a proper timing, the sensing plate 61 self-returns to turn on the normally closed micro switch 63 to turn the belt 5 on.
9, 60 will be restarted. Similarly, if the sewn object 62 is relatively flexible, if it is placed only on the belt 59, it can be transported, stopped, re-transported ...

As described above, even if the belt 59 and 60 are stopped and the worker in the subsequent process does not remove the sewing object 62 ', the weight of the sewing object 62' causes the belts 59 and 60 to bend in the opposite direction. Although it acts so as to return, the worm wheel 17 is fixed to the drive shaft 16 integrated with the drive pulleys 25 and 26, and the motor 13
Since the worm gear 15 fixed to the shaft 14 of the gear meshes, the worm 15 cannot be rotated from the worm wheel 17, resulting in the endless belts 59, 6
Both 0 and the drive pulleys 25 and 26 maintain the stopped state.

Therefore, if this device is installed between certain sewing processes and the total length of this device is shorter than the process interval length, the operator may place the work to be sewn on this device from the previous process and from the rear of this device. When removing and moving the sewn item to the process, extra motion is forced.

In such a case, the distance between the first pedestal 10 and the second pedestal 29 is increased as follows.

That is, when the adjusting screws 41, 42, 45, 46 are loosened and the facing distance between the left and right shafts 38, 39 is first widened to a desired length, the tension between the belts 59, 60 causes the left and right intermediate pulley bases 43. , 44 are also expanded and both belts 59, 60
After making sure that the tension is appropriate, tighten the adjusting screws 41, 42, 45 and 46 to stabilize the device.

If the left and right intermediate pulley bases 43 and 44 do not expand well due to the tension of both belts 59 and 60, they may be manually expanded and then the tension may be adjusted.

If the total length of the device is slightly short, it is sufficient to adjust the expansion of only one of the first pedestal 10 and the second pedestal 29, as described above. If it is too long, the contraction adjustment operation may be performed in the opposite manner to the expansion adjustment operation described above.

On the other hand, when it is desired to widen the space between the belts 59, 60 in the front-rear direction in order to stabilize the work to be sewn and make it longer in the front-rear direction, the drive pulley is first shown in FIGS. 2 and 3. 25, 26 and the pulley shafts 32, 33 are fastened by loosening the setscrews 27, 28 and 34, 35 and expanding the drive pulleys 25, 26 and the driven pulleys 36, 37 to the desired intervals, and then the setscrew 27, 28
And tighten 34 and 35. Furthermore, the intermediate pulley 47,
Although not shown in the drawings, 48, 49, 50, 55, 56, 57, 58, if the bearings are supported as in the structure of FIG. 2 or 3, the drive pulleys 25, 26 and the driven pulleys 36, 37 can be expanded as well,
Even after being unrolled, both endless belts 59 and 60 can be operated without difficulty.

[Effect of device]

Regardless of the weight of the material to be sewn, it can smoothly carry from light to heavy items, and even when the reverse part of the weight acting on the belt acts as a reverse return force, the belt continues to stop and drive people. Without repeating the stop, the durability of the transportation device is improved, there are few failures, and it leads to an improvement in operating rate.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the prior art, FIGS. 2 (a) and 2 (b) are cross-sectional views of a main part showing another example of the prior art, and FIGS. 3 (a) and 3 (b) are drawings of the prior art. 4 is a perspective view showing an embodiment of the sewn material conveying device according to the present invention, FIG. 5 is a sectional view taken along the line AA 'in FIG. 4, and FIG. FIG. 7 is a sectional view taken along the line BB 'in the figure, and FIG. 7 is a drive circuit diagram. 13 ... Motor, 15 ... Worm gear 17 ... Worm wheel 25, 26 ... Drive pulley 36, 37 ... Driven pulley 59, 60 ... Endless belt, 61 ... Sensing plate 62, 62 '... Sewing object

Claims (1)

[Scope of utility model registration request] 1. A drive pulley driven by a motor and a driven pulley are dynamically connected by an endless belt, and the endless belt is placed or hung on the belt to convey a sewn object. In a sewn material conveying device in which power to the motor is cut off by abutting the sewn object on the sensing plate, the sewn object is characterized by connecting the motor and the drive pulley with a non-reversible mechanism. Object transport device.