KR840001017B1 - Apparatus for manufacturing slide fasteners with fastener elements made of synthetie resin - Google Patents

Abstract

An apparatus for manufacturing a fastener chain having solid sections repeatedly provides a tape having perforated sections, which include holes punched along the long- itudinal edge of the tape, and solid sections, which are free of holes. The apparatus alternates the solid sections with the perforated sections, supplying the tape so that the perforated section is placed between a stationary mold and movable mold. Tension is applied to the tape to strotch it, and then fastener elements are injection-molded onto the tape at the holes.

Description

Manufacturing device of synthetic element slide fastener

1 is a partial front view including a portion in which an element is injection molded in advance on a tape supplied to the apparatus of the present invention.

2 is a side view of an embodiment device of the present invention.

3 is an enlarged side view of the tape feed control unit.

4 is a front view showing the enlarged main portion of FIG. 3 in cross section.

5 to 9 illustrate the operation of the device.

10 is a partially cutaway plan view of the main portion of the mold surface of the stationary mold.

11 is a cross-sectional side view of the main portion showing the relationship between the stationary mold and the movable mold.

12 and 13 are side views showing the operation relationship between the ratchet wheel and the beak-shaped protrusion.

* Explanation of symbols for main parts of the drawings

1: expectation 2: moving mold

3: fixed mold 4: stand

5, 6: support plate 7: feed roll

12: step roller 13, 33: engagement roller

15, 16: hollow shaft 20: central shaft

21, 22: swinging plate 23: engagement value

24: Ratchet wheel 25: Intermediate gear

26, 27: gear 29: first air cylinder

30: second air cylinder 17, 18: upper dielectric drum

37, 38: lower dielectric drum 36: sliding interval

35: tension spring 40: beak protrusion

35 ': Spring 58, 59: Stopper

T: Tape C: Tape Feed Control Part

L: Element Fixing Range S: Space

H: Punch ball E: Element

L ': Punch hole snow range

According to the present invention, the punch hole laid in advance for fixing the element is laid in a predetermined range along one side edge, and a long fastener tape is provided in which the punch hole laying range is provided by placing a space part where the punch hole is not laid. Tape abbreviated as below) is introduced into a synthetic resin injection molding machine having a mold in which a large number of elements are opened, and the molding of the elements is repeated on the punch hole, and the apparatus for continuously manufacturing the slide fastener chain. In detail, the punch hole pitch interval of the tape in which the space portion of the predetermined length and the punch hole snowing range of the predetermined length are alternately made narrower than the element pitch of the molding die, and the mold immediately before injection molding is half closed. Tension is applied to the tape so that the punch hole of the tape can be moved. Relates to the feed mechanism so as to tension always suitable for the production apparatus of the fastener chain, an improved tape supply device which has a position.

The present inventor first introduces a tape which is continuously opened at the side edges of punch holes to a synthetic resin injection molding machine for element molding, and tensions the tape in a state in which the mold is half-closed so that the punch hole pitch interval is suitable for the element pitch interval of the molding die. Although the invention of the apparatus for manufacturing the fastener chain of a long slide fastener by extending | stretching and repeating element fastening is repeated by Japanese Patent Application No. 54-12534, this invention is a slider fastener in which an element was continuously stuck and molded to a tape. In obtaining a chain, it does not apply as it is to manufacture of a long slide fastener with an element-free space part before and after the element fixing range. In order to continuously manufacture a fastener chain having a space portion for a long slide fastener, it is necessary to provide a tape feed mechanism and a tension supply mechanism with corresponding element forming molds. The present invention is provided with a manufacturing apparatus to satisfy this necessity. As a feature thereof, the engagement value is inserted into a punch hole of a long tape in which the space portion and the punch hole speech range are alternately repeated in the longitudinal direction. 다수) A combination of engagement wheels protruding on the circumferential surface and the dielectric drum for guiding the tape.When the space portion of the tape contacts, the rotation axis of the engagement wheel is moved to install the dielectric drums at the upper and lower ends, respectively. The gear is moved through the intermediate gear by the intermediate gear and the intermediate gear is in contact with the reverse drive mechanism that stretches the tape while the mold of the element injection molding machine is half-closed. Another feature is that the reverse drive mechanism is configured as follows. For example, a ratchet wheel is provided on the intermediate gear shaft, and the ratchet wheel is engaged by a beak-shaped protrusion provided between the pushing and retreating parts by a predetermined stroke to reverse the predetermined amount, and the reverse movement is transferred to the intermediate gear. The upper and lower engagement wheels are transferred to the upper and lower engagement wheels, so that a predetermined elongation is applied to the tape between the lower engagement wheels and the lower end locking end of the tape so that the punch hole is suitable for the element mold. According to this configuration, the punch hole and the engaging protrusion of the tape are combined once with the upper engaging wheel to accurately match the positional relationship between the engaging projection and the punch hole, and then the lower tension is applied to the tape portion connected to the lower engaging wheel and the upper engaging wheel. The tape tension supplied to the upper engagement wheel does not affect the lower engagement wheel by transferring the tape to the lower engagement wheel as the tension supply without being known.

Therefore, deformation of the punch hole installed in the tape is also prevented, and the suitability of the tape punch hole and the element mold can be maintained at all times.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view showing a slide fastener stringer in the step of forming and fastening an element E using the apparatus. Punch holes are formed at element pitching range (L) and constant pitch intervals, and are formed at the front and rear ends of the slide fastener between the punch hole (H) and the snow forming range (L ') where the element is not molded and fixed. The state in which the space part S in which punch hole H is not installed is provided in () is cut out and displayed.

W is a reinforcing edge of the tape T to which the element E is fixed, and a normal core string is directly inserted.

2 is a side view of an embodiment of the apparatus of the present invention, and FIG. 3 is an enlarged side view of the tape feed adjusting unit C, which is a main portion. 4 is a front view showing the main portion of the enlarged view of FIG.

In the drawing, (1) is a base, (2) is a moving mold which is operated by hydraulic pressure, etc. installed on the base, (3) is a stationary mold machine facing the base, and a mount (4) installed on the base (1). ), A space (S) of a predetermined range, a punch hole (H) having a predetermined pitch interval, and a tape (T) alternately having a snow cover range (L ') are opposed to two punch hole side edges. The struts 8 and 9, which are taken from a spool (not shown), which are wound in parallel, are installed, and the transfer rolls 10 and 11 are moved up and down in the middle thereof. The tape conveying apparatus which consists of the step roll 12, and the tape conveyance adjusting part C connected to this are provided. When the mount 4 is provided so that it can be adjusted up and down with respect to the base 1, the tape feed adjusting part C is provided. If the mount 4 is provided so that it can be adjusted up and down with respect to the base 1, the distance of the tape feed adjusting part C, the metal mold | die 2, and 3 can be deform | transformed, and it can respond to the change of the tape feed conditions. In the lower part of both molds (2) and (3), a feed roll 7 is driven to move forward and backward for the movement of the fastener chain F to which the element E is molded and fixed. Immediately below the detector, a detector composed of a light source 60 and a photoelectric tube 61 for detecting the end portion of the element forming portion of the tape is provided.

Said tape feed adjustment part C is the hollow shaft which protruded from the support plates 5 and 6 in the upper part between the support plates 5 and 6 standing on the mount 4. Iii) The upper dielectric drums 17 and 18 are rotated in rotations 15 and 16, respectively, and penetrate into the hollow shafts 5 and 6 and have a diameter slightly smaller than the inner diameter of the hollow shaft. Oscillating plate 21, (slackly fitted on the central shaft 20, which is supported at the center of the supporting plate 5, 6, and the support shaft 19 is extended to the outer side of both supporting plates 5, 6 The engagement wheel 13 is fixed to the upper portion of the upper surface 22, and the support shaft 19 is fixed in two rows parallel to the circumferential direction of the circumferential surface and protruding a plurality of engagement values 23. The engagement wheel 13 is located between the dielectric drums 17 and 18 axially supported on the hollow shafts 15 and 16, and the engagement wheel 23 and the dielectric drum 17 as the support shaft 19 moves. ) And (18) may be parallel to each other, or may be spaced apart from each other. The support shafts 39 in which the engagement wheels 33 and the lower dielectric drums 37 and 38, which have the same structure as the upper portion of the support plates 5 and 6, are fixed, are fixed. ) Each bite to the gear 27 fixed to each other and each axis is interlocked rotation. Reference numeral 28 denotes a support plate fixed to the support plate 5 and 6, in which a first air cylinder 29 and a second air cylinder 30 are fixed, and a piston of the cylinder 9 of the first air. The rod (pistionrod) 31 is connected to the upper portion of the swinging plate (21) (22) by the branched connecting rod (32). The piston rod 34 of the second air cylinder 30 is in contact with the pressure cylinder 36 biased in the direction to be pulled by the spring 35 and the pressure cylinder 36 is supported to slide on the support plate 28. A bevel-shaped projection 40, which is pressed in the clockwise direction (third way) by the spring 35 'and swings around the support shaft, is provided at the tip and the tip of the bevel-shaped projection 40 is the teeth of the ratchet wheel 24. (I) is engaged forward and reverses the ratchet wheel 24 by a predetermined angle, and 58 is a stopper for adjusting the initial position of the beak-shaped protrusion 40, and 59 is a pressing force. A stopper for adjusting the pressure stroke of the liver 36, 35 is a tension spring for pulling the pressure cylinder 36 to the left of the third degree.

In FIG. 12, when the second air cylinder 30 is not operated, the bent type in which the pressurizing rod 36 is swung to the left by the tension spring 35 to the case 57 installed at its tip is swingable. The state in which the protrusion 40 has returned is indicated by the dashed line, and in that state, the beak-shaped protrusion 40 is pushed to the right by the operation of the second air cylinder 30, and the ratchet wheel 24 The moment when the contact is made is indicated by a solid line. 13 again, the pushing rod 36 is pressed and the detachable protrusion 40 swings counterclockwise against the spring force of the spring 35 ', while the tip of the bevel protrusion 40 is ratchet wheel 24. Is rotated from the dashed line a to b.

는 스톱퍼(59)에 의한 압동간(36)의 행정 및 스톱퍼(58)에 의하여 부리형 돌기(40)의 요동각도 범위의 조정에 의해 상기의 회전각도에서는 증감변경조절되고, 이 회전각도는 축(20)을 통하여 치차운동에 의해 상하의 계합휘일(13), (33)에 각기 소정각도의 역전을 주도록 되어 있다.Angle of rotation from dashed line a to b of ratchet wheel 24

Is changed by the stopper 59 at the rotation angle by adjusting the rotation angle range of the beak-shaped protrusion 40 by the stroke of the pressing section 36 and the stopper 58, and the rotation angle is adjusted by the shaft. Through (20), the upper and lower engagement wheels 13 and 33 are each inverted by a predetermined angle by gear movement.

Reference numeral 41 denotes a spring that always swings the swinging plates 21 and 22 in a constant direction, 70 denotes a light source, and 71 denotes a photoelectric tube, whereby the space portion S of the tape T is closed. It is to be detected. Also, 42 and 45 are fixed guide rollers for guiding the tape T to the upper dielectric drums 15 and 16 and the lower dielectric drums 37 and 38, and 43 and 44 protrude. The guide roller is adjustable in amount by screws.

(46) (47) (48) (49) are press rolls, so they are freely rotated on each of the ends of the branch rods (54) and (56) so that the dielectric drum (15) (16) (37) ( 38) The tape T is pressure-protected and supported on the surface. The branch rods 454 and 56 are supported by the support shafts 50 fixed to the support shafts 5 and 6 so as to swing on the respective ends of the support sections 51 and 52 elastically pressed by the springs. It is.

In the apparatus of the present invention as described above, the slide fastener chain (F) is continuously produced by repeating a synthetic resin element injection molding on a tape by the following steps.

The injection molding die of the element E is prepared in advance in the structures shown in FIGS. 10 and 11. On the opposite mold surface of the movable mold 2 and the fixed mold 3, a large number of element molds 81 provided with a predetermined pitch interval D are laid down over a predetermined length L, and a runner groove 83 And a tape guide groove 85 are provided, and the injection mold 82 and the element type 81 of synthetic resin capacity are provided on the fixed mold 3 axis. In the lower part of the part, the flat surface part 86 which forms the space part S of the tape T, and the end part 87 which the pre-formed last-end element E 'engages in the lower end, its runner R A sensor 88 protruding from the mold surface at which the rear end is held is provided, and a receiving hole 89 is provided at the moving mold 2 surface to which the front end of the sensor 88 is inserted. Between the mold surfaces, the punched hole H is opened at a pitch interval d slightly narrower than the mold element pitch interval D, and two tapes T having a space S are formed. It is inserted in parallel with a predetermined interval. When the last element E 'of the preformed fastener chain is detected by the photoelectric detectors 60 and 61, the tape T is stopped by the transfer roll 7. Subsequently, at the time when the copper mold 2 is half-closed close to the stationary mold 3, the tape T is moved by the transfer roll 7 to the detector 88 and the front fastener chain. The rear end of the runner R is fed back until the end 87 of the last element E 'type contacts. At this point, the second air cylinder 30 is actuated to extrude the piston rod 34 pressure zone 36 in the right direction against the pull force of the tension spring 35, and the spring 35 to the front case 57. The bent protrusion 40, which is elastically pressed and swinged by '), reverses the ratchet wheel 24 by a predetermined angle, so that the reverse angle is interlocked with the intermediate gear 25 by the gear engaging motion of the upper engagement wheel. Each of 33 is inverted by a predetermined angle. Accordingly, the tape T between the preceding element forming rear end and the lower engagement wheel 33 held by the detector 88 end 87 of the mold 2, 3 is subjected to a predetermined stretching to obtain a narrow pitch interval d. Punch hole (H) coincides with the element pitch (D), and at the same time the main mold of the mold is bonded to the injection molding of the synthetic resin capacity.

The mold of the mold is joined and the compressed air of the second air cylinder 30 is removed, and the bent protrusion 40 is pulled out of engagement with the ratchet wheel 24 by the tension spring 35 so as to release the tape. The braking of the supply spool of T is released, and the step roll 12 is lowered to take out the tape T of a predetermined length.

Reversal of the upper and lower engagement wheels 13 and 33 by the second air cylinder 30 is performed by the ratchet wheel 24 due to the gas pressure operation, the elastic force of the tension spring, and the fluctuation under pressure of the beak-shaped protrusion 40. Rotation is performed very smoothly, so that the punch hole H of the tape T is not deformed by the engaging projection 23 inserted into the punch hole H, and the deformation of the punch hole H and the accompanying tape T Since no torsion at all occurs, stable stretching of the predetermined tape T is always guaranteed.

At this time, the element E formed on the two tapes T is connected by the runner R and the gate G. At the same time, the lower conveying roll 7 is driven in the conveying direction at the same time as the demoulding. Then, the runner R and the gate G are cut off between the transfer rolls 7 so that the fastener chains F of two strands are conveyed in the direction of the product winding device (not shown).

The tape feed spool at this transfer time is braked and the stepped roll 12 sequentially rises from the lowered position so that the tape portion that is protected and supported by this portion passes through the guide roll 42 to the tape feed adjusting unit C. Transferred.

In this state, the rotating shaft 19 of the upper engagement wheel 13 is driven by the spring 41 so that the engagement value 23 is located inside the tape contact side circumferential surface of the upper dielectric drum 15, 16. The rotary shaft 39 of the lower engagement wheel 33 is moved to the right such that the engagement value 23 protrudes from the tape contact side circumferential surface of the lower dielectric drums 37 and 38.

Therefore, the engagement value 23 of the lower engagement wheel 33 at this time and the punch hole H of the tape T engage, and the tape T is conveyed.

Then, when the space portion S of the tape T is detected by photoelectric detection consisting of 70 and 71, the first air cylinder 29 is operated after a predetermined time by a timer Timer. During operation of the timer, the space portion S passes over the upper dielectric drums 15 and 16 and is transferred to the front of the lower dielectric drums 37 and 38.

At this point, as shown in FIG. 5, the first air cylinder 29 extrudes the piston rod 31, and lowers the engagement value 23 of the lower engagement wheel 33 to the lower dielectric drums 37 and 38. Of the lower engagement wheel 33 and the engaging teeth 23 of the upper engagement wheel 13, which move in reverse with the lower engagement wheel 33, rise to engage the punch hole H of the tape T At the same time as (T) and the transfer, the engagement wheel 13 rotates.

Since the upper engagement wheel 13 and the lower engagement wheel 33 are coupled by the gear 26 and the gear 27 through the intermediate gear 25, both engagement wheels 13 and 33 are always the same. Rotate at speed. Therefore, when the feed path of the tape is adjusted with the guide rolls 43 and 44, the engagement position of the engagement value 23 and the punch hole H is maintained accurately.

As described above, even the tape T having the space portion S does not give deformation, torsion or damage of the paper T due to the pushing of the engagement value 23 with respect to the space portion. It can be sent to the injection position.

When the space portion S passes through the lower dielectric drums 37 and 38, the first air cylinder 29 returns and at the same time, the lower engagement value 23 rises again due to the elastic force of the spring 41 to punch. Engage with the ball (H) to return to its original state. During the return of the tape T, each of the guide rolls 42, 43, 44, 45 and the pressing rolls 46, 47, 48, 49 causes the tape T to be a positive oil field drum 15. (16) (37) It is wound up in the state which does not hang on the circumferential surface of 38 (38).

The above state is as shown in FIGS. 6 to 9, and the snow cover range L 'of the punch hole H of the tape T of FIG. 7 is joined to the dielectric drums 37 and 38. FIG. In this case, as shown in FIG. 6, the engagement value of the engagement wheel 33 is interpolated and transferred to the punch hole H, and the space portion S of the tape T of FIG. 6 is in contact with the dielectric drums 37 and 38 portions. At this time, the engagement wheel 33 is rotated to the left side by the elastic force of the spring 41, the front end of the engagement value 23 is located inside the surface of the dielectric drum 37, 38 as shown in FIG. Since the upper and lower engagement wheels 13 and 33 alternately move by the swinging plates 21 and 22 to move the engaging teeth 23 and the gears rotate by the central gear 25, the tape T The diameter and the distance between the upper and lower dielectric drums 17, 18, 37, 38, and engagement wheels 13 are determined according to the punch hole snow cover range L 'and the total length of the space portion S. According to the injection molding process, the punch hole snow cover range L 'of the tape T is always in contact with the lower pilot wheels 37 and 38, and the tape ( In the state where T) is reliably supported on the lower end dielectric drums 37 and 38, the injection molding machine can be closed halfway, and predetermined stretching of the tape T by the operation of the second air cylinder 30 can be performed.

In the above embodiment, the upper and lower engagement wheels 13 and 33 are alternately performed by the swinging plate 21 and 22, so that the movement of the axes of the engagement wheels 13 and 33 is transferred to a separate air cylinder. When the proper timing is provided and operated, it is easy to adapt to the change of the conditions of the tape T.

As described above, in the present invention, when the punch hole snow cover range L 'of the space portion or the tape T is changed, the second air cylinder 36 is adjusted by changing the mold 4 up and down and changing the mold. The amount of extension of the tape T may be adjusted by changing the amount of protrusion of the pressing section 36 actuated by the < RTI ID = 0.0 >

In the above-described embodiment, since the upper and lower engagement phases 13 and 33 are moved alternately by the swinging plates 21 and 22, the movement of the shafts of the engagement wheels 13 and 33 are respectively different. When the proper timing is established and operated, the tape T can be easily changed. In this case, the tape T can be connected to the upper and lower engagement wheels as long as there is no space on the dielectric drum. It is able to transport the tape stably because it is engaged and transferred.

In addition, it uses tapes with punch holes with pitch interval narrower than the element pitch spacing of element molding molds, and the predetermined elongation is made smoothly and precisely every time element is formed. In addition to being safe, it is extremely easy to adjust the amount of elongation, and after the punch hole and the engaging projection of the tape being transferred from the spool through the terminal roller by the upper engaging wheel, once precisely corrected, the lower engaging wheel and the upper engaging wheel are moved. The tape portion is not subjected to a sudden tension change as the tape is transferred to the lower engagement wheel as a tension supply agent without any change in tension. There is an effect of ensuring the engagement between the punch hole and the engaging projection of the lower engaging wheel.

As described above, according to the present invention, the tape feed control required for the injection molding of the synthetic resin element, such as reliable conveyance, protection support, stretching, etc., with respect to the tape can be performed without adversely affecting the tape at all. It is an industrially significant effect in that a slide fastener of good quality, which is firmly and firmly fixed, is obtained.

Claims (1)

The engagement wheel is interlocked with the gear through an intermediate gear, and a ratchet whell is fixedly installed on the intermediate shaft, and the beak-shaped protrusion whose tip is oscillated with respect to the ratchet wheel is engaged, Apparatus for producing a synthetic resin element slide fastener characterized in that the tape is stretched in a state in which the mold is half-closed by giving an inversion of a predetermined value to the engagement wheel as the projection is pressed.

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