KR101919099B1 - Sewing device of Gasket pad for drum sealing - Google Patents

Abstract

The present invention relates to a gasket pad sewing apparatus for drum sealing. More particularly, the present invention relates to a gasket pad sewing apparatus for drum sealing, in which the sewing operation of an overlapping portion of the gasket pad is semi-automated. The apparatus comprises: a guide roller (50) for guiding the gasket pad into a bending guide piece (30) and a binding piece (35); a pad withdrawing portion (60) for pushing out the gasket pad (10) and drawing the pad out of the guide roller (50); a pad hanger (70) installed to be shifted in the front and rear direction by a hanger moving means (75); and a control unit (80).

Description

[0001] The present invention relates to a gasket pad for drum sealing,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket pad sewing apparatus for sealing a drum, and more particularly, to a gasket pad sewing apparatus for sealing a drum, which is semi-automated in the overlapping portion of a gasket pad made by manual operation using a conventional sewing machine.

Generally, in a dryer for drying laundry, a drum is installed therein, and hot air for drying the laundry is supplied to the inside of the drum to dry the laundry. In this case, hot air supplied to the drum is leaked to the outside A sealing gasket pad is provided at both ends of the drum.

When the gasket pad is affected by hot air for a long time, the gasket pad is detached from the drum or the elasticity thereof is lost, thereby lowering the sealability of the gasket pad .

In order to solve this problem, the present applicant has been registered with Patent Registration Nos. 10-1073031 and 10-1260923.

The gasket pads of the patented technology are produced by embossing a stretch band on one side of the fabric material along the longitudinal direction and folding the other side in the width direction to form a reinforcing portion, And then the stretchable band is folded and overlapped on one side, and then the overlapped portion is folded to form an extended portion so as to protrude to the outside.

In order to alleviate the labor of the operator during the work of stitching the overlapped portion for forming the extended portion, the present applicant has proposed a method of automatically feeding a fabric to be fed into a sewing machine by guiding or bending it, as in Patent Registration No. 10-0998341 I applied for and registered the technology.

However, since the above-described technique is to automatically supply the fabric, the operator must guide the supply of the fabric in a state of continuing the fabric from the front of the sewing machine, so that a single operator of the gasket pad- It is necessary to carry out a sewing operation for forming.

Accordingly, the number of gasket pad sewing apparatuses must be operated by the same number of workers, resulting in an increase in labor costs. Also, due to the technical difficulties, the gasket pad sewing apparatuses There is not enough manpower to carry out work.

Patent Registration No. 10-0998341 (Nov. 29, 2010, Method for manufacturing gasket pad for dryer and manufacturing facility thereof) Japanese Patent Application Laid-Open No. 10-1073031 (June 10, 2011, gasket pad for drum sealing) Registration No. 10-1260923 (Apr. 29, 201, Method of manufacturing a gasket pad for drum sealing)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a gasket pad by semi-automating an overlapping portion of a gasket pad, The present invention provides a gasket pad sewing apparatus for sealing a drum gasket, which is capable of completing a work, thereby providing a labor cost saving effect, and also capable of performing a sewing operation of overlapping portions of gasket pads while effectively coping with labor shortages.

In order to achieve the above-mentioned object, the present invention is characterized in that an end portion of a gasket pad 10 sewn in an annular band is folded and then an overlapped portion thereof is folded to form an extension portion 11 surrounding the outer diameter of the drum A folding guide piece 30 for guiding one side in the width direction of the gasket pad 10 to be folded and positioned so as to be positioned in front of the sewing machine is provided on a table provided with a sewing machine 20 for stitching the overlapped portion And a binding piece 35 movably provided by a binding piece moving cylinder 36 is provided on the opposite side of the bending guide piece 30 so as to bind and support the other side in the width direction of the gasket pad 10 And a conveying roller 40 which is moved upward or downward by a roller ascending and descending part is pulled back to the gasket pad 10 which is stuck to the rear side of the sewing machine 20 and moves backward, A gasket pad sewing machine for drum sealing according to any one of the preceding claims, characterized in that the bending guide piece (30) and the binding piece (35) are provided at a distance from the front of the bending guide piece (30) A guide roller (50) for guiding the leading of the sheet to the conveying path; A pad withdrawing part 60 for pushing out the gasket pad 10 formed with the extension part 11 and drawing the extended part 11 from the guide roller 50 while being supported by the guide roller 50; A pad hanger 70 installed to be moved in the forward and backward directions by the hanger moving means 75 to receive the gasket pad 10 drawn by the pad drawer 60; And a control unit 80 for controlling the sewing machine 20, the binding piece moving cylinder 36, the pad withdrawal part 60 and the hook moving part 75.

An eccentric rod 25 is connected to a rotary shaft 21 provided to move up and down the needle of the sewing machine 20 to generate vibration while moving in the forward and backward direction of the sewing machine 20, The conveying roller 25 is connected to the conveying roller 40 via a vibration transmitting portion 26 composed of a plurality of connecting blocks 27 and a bracket 28 so that the conveying roller 40 is moved in the front- It is preferable to be provided to vibrate.

At this time, the rotation amount sensing means 90 senses the rotation amount of the rotation shaft 21 and stops rotation of the rotation shaft 21 when the rotation amount reaches the predetermined rotation amount. do.

According to the gasket pad sewing apparatus for sealing a drum seal of the present invention, the overlapping portion of the gasket pads is stitched in a semiautomatic manner, whereby one operator performs sewing work of the gasket pad using several sewing apparatuses It is possible to provide the effect of saving labor costs and also has an effect of helping to solve the labor shortage.

1 is a perspective view showing a gasket pad for drum sealing according to the present invention,
2 is a perspective view of a gasket pad sewing apparatus for drum sealing according to the present invention,
3 is an exploded view of a vibration transmitting portion in a gasket pad sewing apparatus for sealing a drum according to the present invention.
FIG. 4 is an exploded view of a gasket pad sewing apparatus for sealing a drum according to the present invention,
5 is an exploded view showing a bending guide piece and a binding piece in a gasket pad sewing apparatus for drum sealing according to the present invention.
6 is an exploded view showing a pad withdrawing portion in a gasket pad sewing apparatus for drum sealing according to the present invention.
FIGS. 7A to 7D are diagrams illustrating a drawing process of a gasket pad having an overlapped portion sewed according to the present invention,
8 is an exploded view of a seal sensing unit in a gasket pad sewing apparatus for sealing a drum according to the present invention.
FIG. 9 is a view showing a state in which two gasket pad sewing apparatuses for sealing a drum according to the present invention are installed on a '-shaped table. FIG.

Hereinafter, a gasket pad sewing apparatus for sealing a drum according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1, a gasket pad sewing apparatus for sealing a drum gasket according to an embodiment of the present invention folds one side edge of a gasket pad 10 sewn into an annular band, To form an extension 11 surrounding the outer diameter.

As shown in FIGS. 2 to 8, the gasket pad sewing apparatus for sealing a drum is provided on one side of the front side of a sewing machine 20 for stitching the overlapped portion, with one side in the width direction of the gasket pad 10 being folded, And the other end of the gasket pad 10 in the width direction of the gasket pad 10 is supported by the binding piece moving cylinder 36 so as to be movable by the binding piece moving cylinder 36 on the opposite side of the bending guide piece 30 And a conveying roller 40 for pulling back the gasket pad 10 which is stitched and moved backward is installed at a rear side of the sewing machine 20. [

The bending guide piece 30 is provided at a predetermined distance from the front of the bending guide piece 30 to guide the bending guide piece 30 and the binding piece 35 in a state of supporting the gasket pad 10 A roller 50 and a pad 50 for pushing out the gasket pad 10 having the extended portion 11 formed thereon by folding the overlapped portion while being supported by the guide roller 50, A pad hanger 70 installed to be moved in the forward and backward directions by the hanger moving means 75 to hang the gasket pad 10 drawn by the pad hitch 60, A control unit 80 for controlling the sewing machine 20 and the binding piece moving cylinder 36 and the pad withdrawing portion 60 and the hook moving means 75 is further provided.

In the present invention, it is preferable that the sewing machine is installed on a table, and a bobbin placing table 101 on which a bobbin with a thread wound to feed a thread to the sewing machine 20 of the sewing machine is placed, A yarn feeding means 100 is provided.

As shown in FIG. 5, the bent guide piece 30 has a structure in which one side in the width direction of the gasket pad 10 is folded and overlapped, and a gasket pad, And the one side facing the coupling piece 35 is formed to be open.

One side of the bending guide piece 30 is formed to be open after the bending operation of the overlapped portion has been completed and the gasket pad 10 is inserted into the bending guide piece 30 through the opening, So that it can be automatically withdrawn from the server 30.

When the first gasket pad 10 is inserted into the bending guide piece 30, the binding piece 35 is inserted into the bending guide piece 30, The other ends of the gasket pads 10 are drawn into the grooves to move the gasket pads 10 to the bending guide piece 30, So that they can be supported.

The conveying roller 40 is a roller for pulling back a gasket pad which is sewn to the back of the sewing machine and is slightly moved to the rear of the sewing machine. Up or down.

The bending guide piece 30, the binding piece 35 and the feed roller 40 are disclosed in Japanese Patent Application No. 0998341 filed and filed by the present applicant. In the present invention, the guide roller 50, The structure of the pad pull-out portion 60, the pad hanger 70, and the control unit 80 is further included to perform the stitching operation of the gasket pad in a semi-automated manner.

The guide roller 50 is a freely rotatable idler roller which supports the gasket pad 10 moved by the stitching operation of the sewing machine while guiding the guide pad 50 so that it can be smoothly inserted between the bending guide piece 30 and the binding piece 35 .

The pad withdrawing portion 60 may be configured to extend the gasket pad 10 that has been subjected to the stitching operation and to hook the pad 10 to the pad hanger 70 and to push the gasket pad 10.

The pad withdrawing portion 60 may be disposed between the bending guide piece 30 and the guide roller 50 in front of the sewing machine 20 and may be positioned by the first withdrawing cylinder 62 And a second drawing plate 65 disposed at the rear of the sewing machine 20 and moved by the second drawing cylinder 66. [

The reason for installing the two draw-out plates as described above is that at least two portions of the gasket pads 10 that have been subjected to the stitching work are pushed out by the first draw-out plate and the second draw- So that it can be hooked on the rear end portion.

The operating timings of the first drawing cylinder 62 and the second drawing cylinder 66 are preferably the same and are set to operate in the same manner in advance.

The pad hanger 70 is configured to receive the gasket pad 10 drawn out by the pad drawer 60 and is movably installed by the hanger moving means 75.

That is, when the gasket pad 10 is pulled out by the pad pull-out portion 60, the hook holder moving means 75 is operated to move the pad hanger 70 forward, and after the gasket pad 10 is hooked Is moved backward.

The hanger moving means 75 may be a cylinder driven by pneumatic or hydraulic pressure.

At this time, it is preferable that a hooking protrusion 71 is formed on the end of the pad hanger 70 so as to prevent the gasket pad 10 from being detached. The latching protrusion 71 may be formed in an upward direction or may protrude in a direction in which the hook moving means 75 is installed.

The control unit 80 is a means for controlling the operation of the sewing machine, and includes an operation unit 81 and an on-off unit 82.

The control unit 80 includes a substrate and a control box in which the substrate is received. The control unit and the on-off unit are not built in the control box but are exposed to the outside in order to enhance the convenience of the operation.

The operation unit 81 is installed on one side of the upper surface of the table and has a power switch for powering on and off the sewing machine on one side. The operation unit 81 is connected to the sewing machine 20, the binding piece moving cylinder 36 A plurality of buttons are provided for setting the presence / absence of manual or automatic operation of the pad withdrawing portion 60 and the hook moving means 75 and the number of cycles for automatic operation, and a display unit is formed so that the operator visually confirms the setting state have.

The on-off means 82 is provided for turning on / off the sewing machine 20, the binding piece moving cylinder 36, the pad withdrawing portion 60, and the hook moving means 75 after setting the operation by the operating portion 81 And is constituted by an ordinary switch.

In the present invention, as an embodiment of the on / off means 82, a foot switch is provided for the convenience of the operator.

The foot switch includes a first foot switch 82a for operating the binding piece moving cylinder 36 and a second foot switch 82a for operating the pad 20 and the pad withdrawing portion 60 and the hook moving means 75. [ And a foot switch 82b.

The operations of the sewing machine 20, the pad withdrawing portion 60 and the hook moving means 75 are set to be operated by a program. When the second foot switch 82b is turned on, the sewing machine, the pad withdrawing portion, And the hanger moving means are sequentially operated.

When the operator presses the first foot switch 82a, the binding piece moving cylinder 36 is operated and the binding piece 35 is moved outwardly . In this state, the worker inserts one side of the gasket pad 10 into the bending guide piece 30 and then turns off the first foot switch 82a to operate the binding piece moving cylinder 36, And the other side of the gasket pad 10 is tied to the binding piece 35. As shown in Fig.

When the gasket pad 10 is attached to the guide roller 50, the basic preparation operation is completed. When the second foot switch 82b is turned on in this state, the sewing machine 20 is operated, The operation of the sewing machine 20 is stopped when the forming operation of the extension part 11 is completed and then the pad withdrawing part 60 is operated, The pad unit 70 is moved forward while the hanger moving unit 75 is operated and the gasket pad 10 pulled by the pad withdrawing unit 60 is received and hooked .

When the hooking operation of the gasket pad 10 is completed, the hook moving means 75 is operated and the pad hook 70 is returned to the original position and returned to the original position from the pad drawing portion 60.

The operator repeatedly performs the sewing work of the gasket pads by the set number of times with one cycle of the above-described work.

Thus, since all other operations except the input operation are automated, the operator can perform another sewing operation by putting another gasket pad into another sewing machine during a sewing operation for forming an extension of the gasket pad.

That is, the operator can form extension portions on the respective gasket pads through the operation of inserting the gasket pads into the respective sewing machines while occupying two or more sewing machines.

Meanwhile, the sewing operation of the gasket pad 10 using the sewing machine can be performed by controlling the sewing time or the amount of rotation of the rotating shaft 21 of the sewing machine 20, If the rotational speed of the rotating shaft is increased, it is possible to perform the stitching with different lengths at the same time.

Therefore, it is more preferable that the length of the strand is controlled by controlling the number of needles to be stiffened while being raised and lowered through the rotation amount control of the rotary shaft 21 of the sewing machine 20.

In order to measure the amount of rotation of the rotary shaft 21, the rotary shaft 21 senses the amount of rotation of the rotary shaft 21 and stops the rotary motion of the rotary shaft 21 when the predetermined amount of rotation is reached, The rotation amount detecting means 90 is provided.

The rotation amount sensing means 90 may use a general rotation sensor.

On the other hand, the conveying roller 40 may be configured to apply a vibration in the forward and backward directions to pull the gasket pad 10 backward for forced conveyance.

The swinging roller 40 is coupled to the swinging roller 20 in a direction perpendicular to the rotating shaft 21 and one side of the swinging roller 20 is eccentrically rotated with respect to the rotating shaft 21, And a vibration transmitting portion 26 composed of a plurality of connecting blocks 27 and a bracket 28 for transmitting the vibration of the eccentric rod 25 to the conveying roller 40 .

The bracket 28 is spaced apart from the side surface of the sewing machine 20 by a predetermined distance. The connecting unit 27 includes a first connecting rod 27a passing through the bracket 28, A third connecting rod 27c connected to the other end of the first connecting rod 27a and a second connecting rod 27b connecting the one end of the first connecting rod 27a and the eccentric rod 25, And a fourth linking part 27d connecting one side of the roller bracket 41 coupled to the rotating shaft of the transporting roller 40.

Therefore, the vibration of the eccentric rod 25 is transmitted by the plurality of connecting blocks 27 to vibrate the conveying roller 40 in the forward and backward directions, and the vibration of the conveying roller 40 effectively It is possible to transfer it.

In the present invention, the conveying roller is installed so as to be able to move up and down by a roller ascending / descending portion. In one embodiment of the roller ascending / descending portion, a roller having a predetermined length fixedly installed on one side of the sewing machine 20 or the bracket 28, A roller support 46 which is hingedly coupled at one end to the roller linkage 45 and is rotatably coupled to the rotation shaft of the transport roller 40 at the other end, An elastic spring 47 for applying an elastic force to the roller support base 46 to rotate the roller support base 46 in a downward direction and a rotating means 48 for directing or indirectly connecting the roller support base 46 to one end of the roller support base 46, .

When the cylinder is not directly connected to the roller support member 46, the rotation member 48 may be connected to the roller support member 46 by a connecting member including a wire or the like.

The roller elevating and lowering portion is provided to be interlocked with the operation of the sifting machine so that the conveying roller 40 is moved down when the sifting machine operates and when the operation of the sifting machine is stopped, Up operation.

The yarn detecting unit 95 may be installed in the sewing machine 20 to stop the sewing machine 20 in the event of breakage of the hooping yarn by detecting the hooping yarn loosened from the bobbin.

The fixing plate 96 is installed on one side of the sewing machine 20 and is spaced apart from the fixing plate 96 so that the thinning chamber can pass therethrough. A weight 98 suspended between the support piece 97 and the thread passing through the support piece, a pair of or more support pieces 97 having holes formed therein, And a sensor 99.

Herein, one or more guide wheels may be provided on the fixing plate 96 in order to guide the yarn in front of the supporting piece 97.

Since the thread detection unit 95 is installed, it is possible to minimize a work delay due to a thread tangling which may occur due to thread breakage.

10: gasket pad 11: extension part
12: stretching band 20: sewing machine
21: rotating shaft 25: eccentric rod
26: vibration transmission portion 27: connecting rod
27a: first connecting rod 27b: second connecting rod
27c: third connecting rod 27d: fourth connecting rod
28: Bracket 30: Bending guide
35: Binding part 36: Binding piece moving cylinder
40: Feed roller 41: Roller bracket
45: roller linkage 46: roller support
47: elastic spring 48:
50: guide roller 60: pad withdrawal portion
61: first drawing plate 62: first drawing cylinder
65: second take-out plate 66: second take-out cylinder
70: Pad hanger 71: Hanging chin
75: Hanger moving means 80: Control unit
81: Operation section 82: On / off means
82a: first foot switch 82b: second foot switch
90: rotation amount detecting means 95:
96: Fixing plate 97: Support piece
98: Chu 99: Detection sensor
100: yarn supply means 101: bobbin seat

Claims (8)

An apparatus for forming an extension (11) by folding one side edge of a gasket pad (10) sewn into an annular band and folding the overlap portion to wrap the outer diameter of the drum, characterized in that the sewing machine Is provided with a bending guide piece (30) for guiding one side of the gasket pad (10) in the width direction to be folded and positioned so as to be positioned in front of the sewing machine, and the bending guide piece (30) A binding piece 35 provided movably by a binding piece moving cylinder 36 for binding and supporting the other side in the width direction of the gasket pad 10 is provided and the back side of the sewing machine 20 is stitched A gasket pad sewing machine for drum sealing, comprising a feed roller (40) pulled backward by a gasket pad (10) moved backward and moved upward or downward by a roller ascending / descending section,
A guide roller 50 which is installed at a predetermined distance in front of the bending guide piece 30 and guides the bending guide piece 30 and the binding piece 35 in a state of supporting the gasket pad 10 );
A pad withdrawing part 60 for pushing out the gasket pad 10 formed with the extension part 11 and drawing the extended part 11 from the guide roller 50 while being supported by the guide roller 50;
A pad hanger 70 installed to be moved in the forward and backward directions by the hanger moving means 75 to receive the gasket pad 10 drawn by the pad drawer 60;
And a control unit (80) for controlling the sewing machine (20), the binding piece moving cylinder (36), the pad pulling out part (60) and the hook moving means (75) Pad stitching device.
The method according to claim 1,
The pad withdrawing portion 60 is positioned between the bending guide piece 30 and the guide roller 50 in front of the sewing machine 20 and is moved by the first drawing cylinder 62, And a second drawing cylinder 66 provided at the rear of the sewing machine 20 and operated at the same time as the operating point of the first drawing cylinder 62. The first drawing plate 61, And a second take-out plate (65) for pushing out the gasket pad (10) while being moved by the second take-out plate (65).
The method according to claim 1,
The hanger moving means 75 is a cylinder,
Wherein a stopping protrusion (71) is formed on the end of the pad hanger (70) to prevent the gasket pad (10) from being detached.

The method according to claim 1,
The eccentric rod 25 is connected to a rotary shaft 21 provided to move the needle of the sWing machine 20 up and down to generate vibration while being moved in the forward and backward direction of the sWing machine 20, Is connected to the conveying roller 40 via a vibration transmitting portion 26 composed of a plurality of connecting blocks 27 and a bracket 28 to vibrate the conveying roller 40 in the forward and backward directions of the sifting machine 20 Wherein the gasket is provided with a plurality of gasket pads.
5. The method of claim 4,
The rotation amount sensing means 90 is installed on the rotation shaft 21 to sense the rotation amount of the rotation shaft 21 and to stop the turning operation of the rotation shaft 21 when the rotation amount reaches the predetermined rotation amount, A gasket pad sewing device for drum sealing.
5. The method of claim 4,
The roller raising and lowering portion includes a roller connecting rod 45 having a predetermined length fixed to one side of the sewing machine 20 or the bracket 28 and a roller connecting rod 45 having one end rotatably coupled to the roller connecting rod 45, An elastic spring 47 for applying an elastic force to the roller support 46 to rotate the roller support 46 in a downward direction and a roller support 46 And a pivoting means (48) directly or indirectly connected to one end of the roller support (46) for rotating the roller support (46) upward.
The method according to claim 1,
Wherein a seal sensing part (95) is provided to stop the sewing machine (20) when a breakage of the thinning seal is detected by detecting the thinning seal released from the bobbin in the sewing machine (20) Device.
The method according to claim 1,
The control unit 80 is installed on the upper surface of the table so that the sewing machine is powered on and off as well as operating the sewing machine 20, the binding piece moving cylinder 36, the pad drawer 60, An operation unit 81 for setting the presence / absence of manual or automatic operation of the control unit 75 and the number of cycles in the automatic operation,
Off means 82 for turning on / off the sewing machine 20, the binding piece moving cylinder 36, the pad pull-out portion 60 and the hook moving means 75 after the operation setting by the operation portion 81 is performed Wherein the gasket is provided with a gasket.

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