KR910007627Y1 - Band loading apparatus in a packing machine - Google Patents

Abstract

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Description

Band holding device in packing machine

1 is a front view (a) (b) showing the main part of the present invention.

2 is a front view of the full-roller part of the present invention, (b) is a cross-sectional view taken along line B-B of Figure 2 (A) of the present invention.

3 is a perspective view of the packaging machine assembled by applying the present invention.

4 is a front view and a rear view of a general packaging machine.

5 is a front view of the band supply, tightening mechanism portion of the present invention.

6 is a partial cross-sectional view taken from the forward rotation roller portion in the fifth invention of the present invention.

7 and 8 is a detailed view of the present invention, Figure 7 is a front view of the main body, Figure 8 (a) (b) is an enlarged front view of the band unit.

9 is a perspective view showing a band welded portion of the present invention.

10 is a side view and a partial view of (a) and (b) of the prior art.

* Explanation of symbols for the main parts of the drawings

30: full box 32: band exit

33: band inlet 43: balance bar

51, 52: guide plate 53: guide bar

56: swing arm 59: guide shooter

60: band tightening mechanism 70: band fusion apparatus

75: Florer 80: packaging base

81: band guide arch 111: pre-feed roller

112: Traveling Roller 116: Notch

125: Guide Shooter

The present invention is installed between a feed roller for supplying a band to a band guide arch of a baler and a full box having a pleat roller for pulling out a band from the band coil. When the band tip is not gripped in the process of supplying the band guide arch to set the band and simultaneously tightening the band, it is possible to easily reset when the band tip exits from the feed roller by the reverse rotational inertia of the feed roller. It relates to a band loading device of a packaging machine.

As a conventional band holding device of this kind, Japanese Patent Application No. 60-92904 has been introduced. The technical details of the main portion thereof are as shown in (a) and (b) of FIG. 10, and the band inlet 4a and the band outlet ( The band guide passage between the pull roller 5 for feeding the band to the band inlet 4a and the band inlet 4a to the band outlet 4b with the full box 4 having 4b). Feed roller for transferring the band to the band guide arch equipped with the band guide plate 8 and vertically from the band outlet 4b and installed parallel to the packing machine body and returning and tightening the band from the band guide arch. The base 8a is mounted on the rear wall 9 of the pull box 4 so as to be rotatable with the main shaft so that the tip shaft 8b is parallel to one side wall 3 of the pull box 4. While inclined, the rear wall 9 of the pull box 4 is placed in a parallel position. Bend guide plate formed so that the band guide passage (6) from the band inlet (4a) to the band outlet (4b) between the inner surface of the rear wall (9) of the full box (4) in this position ( 8), the band packing device of the packing machine having the band tightening device from the feed roller 7 can be performed to achieve the purpose of the band device even in the conventional example shown in the drawing. By rotating the band 1 supplied to the feed roller 5 from the full roller 5 at the same speed or higher than the traveling speed of the feed roller 7 mounted on the main body of the baler. However, since the feed roller 7 has to rotate a large band of coils, a high torque is required to pull out the band 1, and in order to make the low torque work, the feed rollers must be the same. ( It is a device that reduces the running speed of 7) and decreases the packaging efficiency, and also lacks a means for detecting the completion of band length, which causes a delay in the return of the band guide plate 8 so that the band 1 feeds the feed roller. From (7), there was a defect that the gem was caught in the band aisle of the slide table, preventing the return of the band and the supply of the next rotating band.

The present invention is intended to solve the above-mentioned drawbacks of the prior art, and it is possible to reliably perform the set in the bend to the feed roller, and at the same time, rotate the pre-roller forward to supply the band to the band guide arch, and at the same time, the band is loose in pulling out or pulling the band. It is an object of the present invention to provide a packaging machine which can simplify the supply of the band into the arch simultaneously with the reset of the band of the feed roll even in the case of a loss.

In addition, the present invention is equipped with a complete detector of band pinning, so that the detection of the amount of loading of the band can be used together, and the band jam is introduced into the band passage guided to the band welding device through the full roller and the feed roller by the inertia of the full roller. Referring to the accompanying drawings as a simplified structure of the band-length device so that the present invention will be described in detail the configuration and effect as follows.

Embodiments of the present invention apply to packaging machines including a short horizontal pool box as shown in Figures 4 (a) and 4 (b). The full box 30 shown in a) and 2 (b) is composed of an inner wall 46 and an outer wall 47, and a band outlet 32 and a band inlet 33 are formed to face the upper and lower ends thereof. A pair of pull rollers 75 are mounted at the band inlet 33, and the pull rollers 75 have a full feed roller 35 composed of a full touch roller 36, and are rotated by a bearing case 34. It is used as a full shooter 76 for mounting the support to form a band passage.

The pull feed roller 35 is driven in direct connection with the full motor 37, and the full touch roller 36 is supported and mounted on the eccentric shaft 38 to fit one end of the hook 39 attached to the eccentric shaft 38. It is made to press-contact with the circumferential surface of the full touch roller 36 urged in the direction of the full feed roller 35 by the fitted spring 41.

The shooter cover 42 covers the slide contact surface of the full touch roller 36 of the full feed roller 35. The upper end is usually in contact with the band outlet 32 while supporting the lower end of the balance bar 43 cross-section N-shape so as to rotate in the lower portion of the lower side of the pull box 30 next to the inner wall 46 of the pull box. The lead piece 48 of the limit switch 49 supported by the leaf spring 44 and formed in the inner wall 46 of the bottom portion of the full box 30 and installed on the inner surface of the inner wall 46. It protrudes and is located in contact with the back of the balance bar 43.

Inside the pull box 30, guide plates 51 and 52 made of a plate body forming a band passage communicating with a band passage of a bearing case 34 having a band inlet 32 are provided. The end portion of the guide plate 51 in the other direction is slightly raised upward, and the end portion 52 of the arc 52 is extended to a position close to the lower side of the balance bar 43. It ends at a position lower than the tip.

Thus, near the band outlet 32 of the pull box 30, the upper end of the guide bar 53, which is about 1/2 the length of the pull box 30, is supported by the shaft 54.

The crank 55 is wedge-locked to the shaft 54 protruding from the opposite side of the inner wall 46, and one end of the crank 55 is attached to the back of the inner wall 46 near the band outlet 32. The other end of 58) is connected, and the guide bar 53 is rotatably provided so as to stop at the position of the solid line and the dashed-dotted line of FIG.

The upper end of the swing arm 56 is supported at the lower end of the guide bar 53, and the lower end of the swing arm 56 is fixed by one end of the upper guide plate 51 of the guide plates 51 and 52. have.

The pair of rollers 10, 13 having the lower end of the guide shooter 59 in contact with the band outlet 32 of the full box 30, and the upper end of the guide shooter 59 having the band feeder and the tightening mechanism 60. ) And (20), (23) is connected to the rear end of the band shooter 31 so as to be in contact with the inner slide.

In addition, in Fig. 1 (a), the spacers 16 and 17 are provided with a band larger than the width inside the pull box 30 when the outer wall 47 of the pull box 30 is installed. .

In Fig. 4 (a), the handle 24 is fixed to the shaft 54 of the guide bar 53 and another handle 28 is mounted to the end of the eccentric shaft 38 of the full touch roller 36. have.

The band reels 25 are loaded with band coils, and the bands are provided on the band guide arches 81 on the main body 80 via the brake lever 27, the full box 30, and the band supply and tightening device 60. Feed the band.

The band supply and tightening device 60 is introduced in US Patent No. 4,383,881. The technical summary is a pair of feed rollers having a predetermined interval in contact with the band shooter 31 as shown in FIGS. The roller 10 and the reverse roller 20 is provided with a return roller for returning the band wound around the packaged goods, and the reduction device equipped with the motor 15 is installed in the forward roller 10 The gear 19 directly connected to the drive shaft 11 and attached to the drive shaft 11 is engaged with the gear 26 larger than the diameter of the gear 19 connected to the shaft 21 of the reverse rotation roller 20. The rotary roller 20 always rotates in the opposite direction.

Identification numbers (13) and (23) are forward and reverse rotational touch laurels having a structure similar to that of rock crawlers, which have almost the same shape, and are contracted and reversed by FIG. 6 showing the operation of the forward rotational touch roller 13 Rotating touch rollers are shown and these two touch rollers are supported on the eccentric shafts 86 and 85 so that the ends of the curved pieces of the N-shaped interlocking rods 91 and 96 are at the ends. Loosely inserted into the hole 92 formed in the spring 93 is connected to the operating interval 90, the lower end of the operation interval 90 of the arm lever (98) (99) having a rool (94) (97) Attach to the end.

The ends of the arm levers 98 and 99 are mounted to be rotated by the shaft 100 protruding from the base plate, and the other end is attached to the band shooter 31 by engaging the spring 101.

The cams 102 and 103 are attached on the axis extending the camshaft 40 to operate the band welding mechanism 70 made of a known band gripper, a heater and a center press, and the like. In contact with the rolls 94 and 97 of the 99, it is to be associated with the communication section 91 (96) or between the operation (90, 95).

As shown in FIG. 9, the band welding mechanism 70 is already known of presses 131-133 capable of vertical movement by a plurality of cams 140 wedged to the camshaft 40. As a structure, the right press 131 is for tightening the band end, the left press 131 is for holding the band end, and the right press 133 is tightening the end of the band where it is returned around the goods to be wrapped. The central press 132, which is intended for fixing and for fusion bonding of the band joint portions by a heater (not shown), compresses the band between these presses 131-133 and the slide table 130, thereby It is sandwiched between and the junction.

The right band passage 135 and the left bad passage 136 communicate with each other at the lower end of the band guide arch 81 on the main body.

In addition, in the illustrated embodiment, the forward roller 12 and the reverse touch roller 23, which are the rock rollers, are respectively driven rollers which rotate in contact with the forward roller 10 and the reverse roller 20, respectively. The rotary roller 10, the forward rotation touch roller 13, the reverse rotation roller 20 and the reverse rotation touch roller 23 were installed to engage each other in forward and reverse rotation by engaging gears of the same diameter up and down, respectively.

In the long run of the band, the guide bar 53 and the front swing arm 56 are arranged in the solid line position of Fig. 1 (a) by the handle 24 mounted to the shaft 54 of the guide bar 53. By rotating the band reel 25 by hand, the band is drawn out and inserted into the punch roller of the brake lever 27 and the full touch roller inside the pair of pull rollers 75 in contact with the band inlet 33 of the pull box 30. The eccentric shaft 38 of (36) is opposed to the spring 41 and rotated counterclockwise as shown in Figs. 1 (a), 2 (a) and 4 (a) from the full shooter 76. Between the full feed roller 35 and the full touch roller 36 is inserted and the operator's hand is removed from the eccentric shaft 38, the preparation of the band is completed.

Here, the full motor 37 rotates when the operation start switch of the front side of the packaging machine main body 80 is turned on, and the band is press-fitted by the full feed roller 35 and the spring 41, and the full-roller roller is driven continuously. A band is drawn out from the band reel 25 between the 36 and the drawn band is between the balance bar 43 and the guide bar 53 or the swing arm 56 between the guide plates 51 and 52. Passed through the band guide path 65 formed therebetween is sent from the band outlet 32 into the guide shooter 59 and finally guided into the band shooter 31.

When the operation start switch is turned on, the forward rotation roller 10 directly connected to the reduction motor 15 is driven, and the cam shaft 40 directly connected to the cam shaft motor (not shown) rotates, and the protrusion of the cam 102 is rotated. (94), the forward rotation touch roller 13 is pressed against the forward rotation roller 10 (FIG. 6), and the band reaches the band shooter 31 by the rollers 10 and 13 by the main body 80. It passes through the band guide arch 81 above and is transferred to the band welding mechanism 70.

The pressure contact of both the rollers 10 and 13 is released by the rotation of the camshaft 40, which is stopped during the set period of the timer connected to the camshaft motor, again, but after the band tip reaches the band welding mechanism 70, both the rollers ( 10) In order to allow the band to be supplied again at the end of the crimping state of (13), the extra band is loosened so that the band guide arch (81), the band shooter (31), and the balance bar (43) and the guide bar (53). Ripples in the band guide path 65 between the swing arm 56 and the swing arm 56, and the looseness of the band is pressed to the right as shown in FIG. 1 (a) of supporting the balance bar 43 on the leaf spring 44. .

As for the rear side of the balance bar 43, the lead piece 48 of the limit switch 49 protrudes from the insertion hole 45 formed in the inner wall 46 of the full box 30, such as the balance bar 43. The full motor 37 stops at this signal by moving the direction to turn on the limit switch 49.

When the band is loosened between the balance bar 43 and the guide bar 53 or the swing arm 56, the first movement of the swing angular arm 56 attached to the lower side of the guide bar 53 as well as the balance bar 43 is moved. In Figure (a), the swinging to the left, and for that reason, even if the stop of the full motor 37 is slightly delayed, the band guide path 65, the guide shooter 59, and the band shooter 31 from the full roller 75. And a problem such as jamming of the band in the band passage to the band welding mechanism via the band guide arch 81 does not occur.

Here, the guide bar 53 when the handle 24 mounted on the shaft 54 of the guide bar 53 rotates clockwise in Article 1 (a) to move the guide bar 53 in the dashed-dotted line direction of the same drawing. The swing arm 56 supporting the upper end at the bottom) is positioned at the left end of the pull box 30 to place the pull box 30 in the standby state of the band pull.

As a result, the band stretched between the balance bar 43 and the guide bar 53 or the swing arm 56 is transferred into the full box 30 and the lead piece 48 pressed to the rear side of the balance bar 43 is returned to its original position. It returns and the limit switch 49 is OFF accordingly.

The full motor 37 is rotated again by this signal, so that the full box is composed of a full feed roller 35 and a full roller 75 composed of a full touch roller 36 which is always in pressure contact with the full feed roller 35. The band is pulled in 30.

Due to the force compressing the band as shown in Fig. 1 (a), a fixed amount of bands gathered therein rotate the balance bar 43 to the right, and the lead piece 48 is pressed again to stop the full motor 37. do.

In this way, the band is fully loaded and the band is pulled and the preparation for packing is completed.

The band supply fastening mechanism 60 maintains a gap that exceeds the thickness of one band between the forward rotation roller 10 and the electrostatic touch roller 13 so that the projection of the cam 102 is not the position where the projection 94 is pressed down. The band in the band shooter 31 is not affected.

In addition, the rotational relationship between the reverse rotation roller 20 and the reverse rotation touch roller 23 is the same as above.

Here, the cam shaft 40 is rotated by the start switch, the band tip is gripped by the band tip holding mechanism of the band welding mechanism, and the cam also rotates, so that the cam rolls 97, arm lever 99, and interlock 96 are interlocked. The eccentric shaft rotates in an arc shape and presses the reverse touch roller 23 mounted on the eccentric shaft so as to be pressed against the reverse rotation roller 20.

As a result, the band supply shortening in the band shooter 31 is returned at high speed by a pair of rollers for rotating driving, and then the band is tightened by the reverse rotating touch roller 23 and the reverse rotating roller 20.

At this time, the band is wound strongly against the packaged object as the set time elapses, the cam shaft 40 rotates again to grasp the feed shortening shaft, and the arm lever 99 swings to rotate the reverse rotation touch roller 23 and the reverse rotation roller 20. Of the band polymerization portion from the band welding mechanism by the cam shaft 40 which continues to rotate again by forming a gap in which the band does not come into contact between the rollers in the band shooter 31 and rotating again. Will be implemented.

Rotation of the cam shaft 40 is known by the release of the pressure contact to the band of the reverse rotation roller 10 and the reverse rotation touch roller 13 by the rotation of the cam at the same time as the grip of the known supply short axis is returned to the original position. Band Cutting Welding Each process is completed.

Since the rotation of the cam shaft 40 rotates the cam, the forward roller 10 and the forward touch roller 13 are as shown in FIG. 6, and the band presses the band between both rollers to produce a certain amount of band on the upper surface of the main body. Feed it out.

The camshaft 40 is rotated again by a timer or other control means, the eccentric shaft 86 is rotated through the operation period 90, and the pressure contact between the forward rotation touch roller 13 and the forward rotation roller 10 is released. As the cam 102 rotates again, the band supply process is completed.

When the amount of band pool in the full box 30 decreases in the band supply, the limit switch 49 is turned ON while the balance bar 43 moves to the left side in the full box 30 as shown in FIG. 1 (a). When the pull motor 37 rotates and a predetermined amount of bands are drawn out of the band reel and the band is pulled again in the full box 30 to reach a predetermined amount, the feed piece 48 extends to the rear of the balance bar 43. The full motor 37 is stopped by the limit switch signal, and the same operation is repeated.

FIG. 1 (b) shows a second embodiment of the present invention. The difference between the first embodiment and the first embodiment will be described. In the second embodiment, the balance bar 43 is slightly larger than the first embodiment. It is short and the upper end thereof is slightly opposed to the lower end of the guide bar 53 in the band exit direction and the upper end of the balance bar 43 is slightly inclined in the direction of the guide bar 53.

One piece 67 of the guide body like a funnel addressed from below the band outlet 32 has a balance bar 43 in which the band is returned by the reverse rotating roller 20 and the reverse rotating touch doll 23. This band is intended to prevent the band from falling behind and is not necessary for the band pull and the band pull, and other configurations and operations are the same as in the first embodiment.

7, 8 (b) and 8 (b) show another embodiment, a packaging machine equipped with a full box having a relatively large horizontal length, as shown in FIG. It is applied to the baler which can be used for stretching, soft and narrow band. Specific differences from the above-described embodiment are as follows.

The balance bar 43 is in the form of another guide body facing the other guide body 67 in contact with the band outlet, the upper end of the balance bar 43 is supported so as to be free to rotate and the lower end is a full roller by its own weight Another guide plate 51 of 75 is connected out of the end.

The guide bar 53 is formed integrally without the swing arm 56 and is internally connected. The end of the guide bar 53 is connected to the outside of the end of another guide plate 52 to guide the band to the balance bar 43 and the guide bar 53. The furnace 65 is formed.

The band set unit 110 is installed in a back pool formed in the right space of the full box 30 and is a passage through which the band passes. The band set unit 110 is formed in the passage from the notches 116 formed in the guide shooter 125 and the guide shooter 125. It has a substantially circular shape having a wide rectangular cross section composed of opposing plepid rollers 111 and traveling rollers 112.

One end of the guide shooter 125 is directly connected to the guide body 67 via the band outlet 66, and is directly connected to the band guide path 65 between the guide bar 53 and the balance bar 43, and the other end thereof. The pre-roller 111 and the traveling roller 112 are always positioned in the tension arm shooter 61, and the respective shafts 114 and 115 are formed on the upper periphery of the U-shaped bracket 113 fastened to the backlash. It is rotatably supported by.

The prefeed roller 11 is larger than the diameter of the traveling roller 112 and the outer circumference has a notch 116 formed therein, and the protrusions 122 and 123 are opposite to the notch 116 of the shaft 114 at both sides. The protrusion 122 of the bracket 113 is arranged to be transported from the lead piece 121 of the limit switch 120 mounted on the outer wall of the bracket 113, and one end of the spring 117 is provided with a protrusion ( 122 is attached to the other protrusion 123 formed on the opposite side and the limit switch 120 detects the movement of the protrusion 122 from the lead piece 121 to express a signal, so that the motor of the forward rotation roller 10 The forward rotation roller 10 is rotated for the time set in the timer.

The two spring rings 119 are bent at one center of the symmetrical wall of the bracket 113.

One of the bent ends of the spring ring 19 protrudes outward from one wall of the bracket 113 on the side of the prefeed roller 111 and the spring 117 is provided with a protrusion 123 provided on the side of the prefeed roller 111. It is mounted between the bent ends so that in normal times the notch 116 is forced to be located at the circumference of the traveling roller 112.

Furthermore, the prefeed roller 111 forms a band allowable gap between the outer circumferential surface of the traveling roller 112 and mediates the outer circumferential surface of the traveling roller 112 and the outer circumferential surface of the traveling roller 112 and the band other than the notch of the prepit roller 11. Perturbation contact is made.

The other bent end of the spring ring 119 is located in the bracket 113 so that the spring 118 is installed between the shaft 114 and the end of the traveling roller 112 so that the traveling roller 112 is always in the same direction. As it is subjected to the force, the sliding contact with the pre-feed roller 111, and in the same way to form a hole of the shaft 114 with a certain tolerance, the outer circumferential surface of the pre-feed roller 111 is traveling according to various bands having different thicknesses 112 is able to rotate by pressure.

The shaft 114 of the prefeed roller 111 extends forward in FIG. 7 and the lever 124 is attached to the end located outside the cover of the main body 40.

The indentation number 62 is a tension arm, and the lower end is supported by the shaft so as to swing freely, and the band guide path 63 is perforated in the upper part.

Jaw 71 is built on the upper end of the tension arm 62 and the lower surface of the jaw 71 is through the band guide path 63 and the jaw 71 is a spring (not shown) in a direction falling from the bottom of the guide path 63 Is powered by).

The pin 72 inserted at the bottom of the jaw 71 is located in the notch 73 formed at the upper portion of the band guide path 63 so that the pin 72 is in contact with the upper end of the adjustment arm 74 at the lower end. Another spring, which has a force greater than the spring elasticity of the jaw 71, is connected to the adjustment arm 74 so that the tension arm 62 swings in the clockwise direction in the seventh degree by the cam (not shown). The force of the other spring pulling the adjustment arm 74 to the left side acts harder than the spring of the jaw 71 such that the jaw 71 enters the bottom of the guideway 63 through the middle of the adjustment arm 74. Since the band is caught between the lower portion of the jaw (71) and the bottom of the band guide path (63) and tighten the band of a constant stroke.

One end of the arc-shaped tension arm shooter 61 which is curved like the curvature of the guide shooter 125 is fixed to the inlet of the band guide path 63 of the tension arm 62, and the tension arm shooter 61 passes therein. Since the tension arm shooter 61 has a thickness sufficient to insert the guide shooter 125, the end of the guide shooter is always located inside the tension arm shooter 61.

The feed shooter 31 formed with a path through which the band passes is in contact with the exit of the band guide path 63 of the tension arm 62, and a pair of feeds that are opposed to each other in the path from the notch formed in the feed shooter 31 are paired with each other. The roller 10 and the upper roller 13 are provided.

The forward rotation roller 10 is connected to the motor (not shown) and the final step of one cycle of packaging work. At the welding site of the band polymerization part, the forward rotation roller 10 rotates forward while the timer falls by a signal indicating completion of the band coupling. And the signal from the limit switch 120 of the band set unit 110, i.e., the signal indicating the rotation of the pre-controller 111 in the clockwise direction of the seventh degree, during the set time of the timer. 111) is rotated forward, and the band is supplied into the band guide arch and the band is returned by the rotation time of the timer set time by the start button which is turned on after the front end of the band is held by the band gripping mechanism.

In addition, in FIG. 7, the forward rotation touch roller 13 is supported by the eccentric shaft 69 and is provided with the weight 78 movable by the adjustment lever 77 inserted in the eccentric shaft 69.

Since the eccentric shaft 76 is always driven downward in the seventh degree by the weight 78, the forward rotation touch roller 13 is in sliding contact with a constant force, and the two rollers are connected to each other by the movement of the adjustment lever. By separating and moving the weight on the control lever to the sliding contact force with the forward rotation touch roller 13 of the forward rotation feed roller.

Referring to the operation of the embodiment described above, the band is guided through the middle of the band guide path 65 in the pull box 30 from the band coil 25 to the full roller 75 as in the above embodiment. ) Is inserted directly or manually into the notch 116 between the traveling roller 112 and the pledi roller 111, wherein the shaft 114 of the prefeed roller 111 is extended to When the lever 124 attached to the outside rotates in the clockwise direction for an appropriate time as shown in FIG. 1, the prefeed roller 111 is rotated, so that the circumferential surface excluding the prefeed roller 111 is notched 116. And the band held in contact with the traveling roller 112 through the middle of the band from the position shift of the notch 116 in the guide shooter 125 is the guide shooter 124 tension arm shooter 61 and 61. ) And the forward rotation roller 10 and the forward rotation via the band guide path 63 of the tension arm 62 It is supplied to a position in contact with the vicinity of the two rollers or the value roller 13.

At every rotation of the lever 124, the prefeed roller 111 is fixed at a position where the notch 116 opposes the circumferential surface of the traveling roller 112.

When the lever 124 is rotated again, the rotation of the prefeed roller 111 causes the protrusion 22 formed on the side of the roller 111 of the prefeed roller 111 from the lead piece 121 of the limit switch 120. The motor of the forward rotation roller 10 is rotated by the signal of the operation of the limit switch 120 so that the forward rotation roller 10 and the forward rotation roller 13 are caught while being slid. The motor rotates forward for the set time of the timer, the band is guided by the band guide arch, rotates around the arch, and the band head reaches the band end grip mechanism.

The end of the band is located near the pre-feed roller 111 so that the band fed by the pre-feed roller 111 rotates once may prevent the end of the band from entering the gripping mechanism.

In this case the band is conveyed by repeated rotation of the lever 124.

In this case, a certain amount of the band is transferred to the band guide arch in this case, and the forward rotation roller 10 rotates forward again for a time set by the signal of the limit switch 120, so that the excess band enters the gripping mechanism. Regardless, it is transported more.

However, the sliding contact pressure of the forward rotation touch roller 42 and the forward rotation roller 10 is adjusted so that the upper roller will slide with respect to the band by the moving state of the weight 78.

As the forward rotation touch roller 13 slides the surface of the band, it does not follow the rotation of the forward rotation roller 10 due to the above reason, so that an extra band is not supplied to the band guide arch.

The signal for detecting that the band end portion has arrived in the gripping mechanism material is good to stop the rotation of the forward rotation roller 10 and the rotation control of the forward rotation roller 10 can be applied to a variety of known methods.

The forward rotation of the forward rotation roller 10 transfers the band to the band guide arch and turns on the start button so that the band end is gripped by the gripping mechanism.

The continuous operation of the timer causes the reverse rotation of the forward roller 10 for a predetermined time, and the band held between the forward roller 10 and the forward touch roller 13 is returned from the band guide arch to be packaged. Tie around.

The tension arm 62 rotates clockwise due to a cam (not shown) as shown in FIG. 1 and the spring force of the adjustment arm 74 is greater than the spring spring force of the jaw 71 and the jaw 71 In order to tighten the band between the lower surface and the bottom of the band guide path 63 (two dashed lines), the adjustment arm 74 puts the jaws 71 and the bottom of the band guide path 63 in a pressed state. After tightening, cutting and adhering the polymerized portion, the tension arm 62 is released and returned to the jaw 71 so that each device returns to its original position to transfer the band back to the band guide arch.

In addition, the end of the guide shooter 125 is inserted into the tension arm shooter 61 fastened to the tension arm 62 (solid line in FIG. 7), and the guide shooter 125 is caused by the swing of the tension arm 62 when the band is tightened. Half of the full length is inserted into the tension arm shooter 61 (two dashed line in FIG. 7). (The dashed-dotted line in Fig. 7) The conveying portion of the band tightened by the tension arm 62 is collected in the grass.

In this case, the notch 116 of the prepit roller 111 is moved by the spring 117 between the prefeed roller 111 and the traveling roller 112 at the opposite position to the traveling roller 112 at the opposite circumferential surface of the traveling roller 112. The gap between the notch 116 and the outer surface of the notch 116 is formed so that the band does not get caught in this region and is transferred to the backpool by the swing of the tension arm 62 so that the band grip by the jaw 71 at the time of returning The release leaves the band pulled in the backple.

In addition, when the amount of the band supplied to the band guide arch is insufficient, or the band tip is not gripped or the band is caught, the tip is not returned by the reverse rotation of the forward rotation roller 10 and the forward rotation touch roller 13. By virtue of this, the band tip can be separated between the rollers 10 and 13 or from the tension arm 63, but the reverse rotation is also controlled within the set time of the timer.

Furthermore, even if the band continues the reverse rotation due to inertia after the end of the reverse rotation, since the band end has a predetermined amount of bands filled with the back pull and the pull box, the band tip is subjected to upward force by the elasticity of the band, so the guide shooter 125 is used. Left in the main body 80 and by rotating the pre-feed roller 111 of the band set unit 110 by operating the lever 124 from the outside of the main body 80 and the forward rotation feed roller 10 consisting of a pair of feed rollers and Simultaneously with the forward rotation touch roller 13, the feed roller 10 can be rotated forward at the set time of the timer by the limit switch 120 signal that detects the rotation of the pre-roller 111. As a result, the band is transferred to the band guide arch. If the tip of the band falls to the back pull, the tip of the band is inserted into the guide shooter 125 so that the lever 24 is rotated so that the band 24 can be easily fixed.

As described above, the band set unit 110 independently or optionally from the band guide path 65 with the guide portion 53 and from the full roller 75 the band outlet 32, 66 and the balance bar ( 43) can be used to form.

Therefore, the present invention is a band packing device of the packaging machine, the band supply tightening mechanism and the guide outlet is connected to the band outlet of the pull box to communicate with each other, and one end of the balance bar is supported in the band outlet direction, so that the balance bar is almost always in a vertical position. The swing arm is installed at the other end while the guide bar can be rotated at the same time as the supporting attachment means, and the guide plate is installed between the other end of the swing arm and the balance bar from the full roller at the inlet of the full box band. In the initial configuration of the packaging machine and the replacement of the band coil with a simple configuration, it is easy to make the band long and the band in the band passage of the band fusion apparatus is stopped from the full roller to stop the full roller by detecting the completion of the band long. It will improve packaging efficiency without causing.

Claims (6)

Full box 30 for storing the band, the full box 30 has a band outlet 32 and a pair of motor drive feed roller 35 for supplying the band from the full box and the band outlet (3) to guide the band. 32) and a guide shooter (59) (125) means forming a guide passage extending between the feed roller (35), and the band from the pull box (30) to the motor driven pull feed roller (35). Band tensioning means for pre-supply, the band tensioning means is disposed opposite the traveling roller 112 and the traveling roller 112 disposed on one side of the guide passage adjacent to the band exit and the guide passage Rotatable prefeed roller 111, the prefeed roller 111 is formed with a notch 116 on its outer circumferential surface, the outer circumferential surface trebles the band when it is in a position opposite to the travel roller 112 To press the ring roller 112, The notch 116 forms a gap between the traveling roller 112 so that the band moves freely when the notch 116 is positioned at an opposite position of the traveling roller 112, and the prefeed roller ( 111 presses the notch 116 to the opposite position of the traveling roller 112, and again detects the rotation of the pair of prefeed rollers 111 and responds to the motor driven feed roller for a predetermined time. 35) A band holding device in a packing machine for supplying a band to a tired bag formed by a limit switch 49, which is a sensing means for operating 35). The device of claim 1, wherein the means for rotating the pair of prefeed rollers (111) is formed by attaching a lever (124) to the shaft (114) of the prefeed roller (111). 2. The device of claim 1, further comprising a spring (41) means for pressing said prefeed roller (111) to a position opposite said notch (116) to said traveling roller (112). The method according to claim 1, wherein the sensing means has a protrusion extending from one side of the prefeed roller 111 at a position spaced apart from the rotation axis of the prefeed roller 111. When the notch 116 is in the opposite position of the traveling roller 112, it has a switch 49, 120 mounted to be positioned adjacent to the protrusion and is adapted to operate in response to the protrusion moving away from the switch switch. Band holding device in configured packaging machine. The packing machine according to claim 1, wherein the traveling 112 is movable from the prefeed roller 111 and the spring 41 means is adapted to press against the movement of the traveling roller 112. Band holding device The method of claim 1 wherein said means for rotating said pair of prefeed rollers 111 consists in attaching a lever 124 to the shaft 114 of said prefeed rollers 111 and wherein said notch 116 is formed. There is a spring 41 means for pressing the prefeed roller 111 in an inclined position opposite to the traveling roller, and the traveling roller 112 can move apart from the prefeed roller 111 and the traveling roller A band holding device in a packing machine having a spring (41) means for pressing against this movement of the (112).