KR200150137Y1 - A strapping-feeding mechanism for an automatic strapping machine - Google Patents

Abstract

Wuhan strap-supply mechanism for automatic strapping machines Quick strap-supply mechanism for quickly providing straps to strap rails on automatic strapping machines and automatic strap-supply mechanisms for tightening straps that slide on strap rails while being pulled back By including, the strap is prevented from slipping further backwards and automatically fed back to the strap rail. The quick strap-supply mechanism mainly includes a fixed panel and a cover panel. The fixed panel has a strap guide channel having a lower end coupled to the strap outlet of the strap-storage power unit and an upper end coupled to the strap inlet of the strap-supply device, wherein the fixed panel is fixedly fixed to the front of the fixed panel. It has a movable plate that is rotatable to extend into the panel and forms the other sidewall of the vertical middle section of the strap guide channel. The strap resupply mechanism includes an opposing swivel wheel that extends to the top of the drive wheel and the strap guide channel such that the drive wheel and the swivel wheel together tighten the strap that slides on the strap rail and then refeed the strap to the strap rail. do.

Description

Strap-Supply Mechanism for Automatic Strapping Machines

1 shows the structure of a strap-feeding mechanism of a conventional automatic strapping machine.

2 shows the structure of a strap-feeding mechanism of an automatic strapping machine according to the present invention.

3 is an exploded perspective view of the fixing panel and cover panel which together form the rapid strap-feeding mechanism of the present invention.

4 is a front view of the assembled fixed panel and the cover panel and the panel.

5 is a cross-sectional view of the assembled fixed panel and the cover panel according to line 5-5 of FIG.

FIG. 6 is a cross-sectional view of the assembled fastening panel and cover panel along line 5-5 of FIG. 4, wherein the movable leaf of the cover panel forms the sidewall of the strap guide channel of the fastening panel.

7 is a partial front view, in particular, showing the top of the fixing panel.

8 shows how the slid straps are resupplied by the present invention.

FIG. 9 is a cross sectional view taken along line 9-9 of FIG.

10 is a partial side view of the microswitch in an inoperative state.

FIG. 11 is a view similar to FIG. 10 showing a microswitch in an operating state.

* Explanation of symbols for main parts of the drawings

10 housing 11 strap

15: strap storage 18: strap rail

20: strap-supply device 30: fixed panel

31: guide channel 40: cover panel

41: plate 50: strapping machine

51 strap-storage power unit 60 strap

[Purpose of designation]

The technical field to which the design belongs and the prior art for the field

In a strapping machine, the strap-feeding mechanism is driven and driven by a drive motor for the purpose of continuously feeding and pulling back the strap to wrap and securely strap the object. Typically, a strap storage is provided between the strap-supply and the strap-atoring power unit so that the strap can be provided and pulled back smoothly. The strap portion pulled back by the strap-feeding device is temporarily stored in the strap reservoir. The strap-storage power unit rotates properly to guide the strap from the strap roll to the strapping machine outside the strapping machine. The strap, which is guided to the strapping machine, is first stored in the strap storage in a zigzag form and is ready to provide the next strap.

1 generally illustrates the strap-feeding mechanism of a conventional automatic strapping machine. In order to guide the initial portion of strap 11 to the strapping machine, the door covering the machine completely exposes the interior of strap storage 15. In order to be sufficiently open. At that time, the strap 11 is pulled and guided by hand from the strap roll outside of the machine housing 10 and passes through the brake 12 to the machine housing 10. With the aid of the strap guide roller 13, the strap 11 is additionally guided to the inlet of the strap-storage power unit 14. Thereafter, the push button switch (not shown) of the strap-store power device 14 is pressed to rotate the roller of the device 14 at high speed so that the strap 11 passing through the device 14 is strap storage. (15) Execute to be successfully guided into. The initial portion of the strap 11 is moved towards the opening 16 at the top of the strap reservoir 15 and pulled by hand to guide the inlet of the strap feeding device 17. The push button switch (not shown) of the strap-supply device 17 is pressed to cause the roller of the strap-supply device 17 to rotate at high speed. The strap 11 through the strap-feeding roller rotating at high speed is thereby guided directly to the strap rail 18 above the machine housing 10.

With the strap 11 as a conventional strap-feeding mechanism of an automatic strapping machine, the following drawbacks and problems are found in the guiding and feeding operations; 1. The door covering the machine housing must be fully open before being led to the strapping machine. Therefore, a large space is required to place the machine, otherwise it is necessary to move frequently to a large place to open the door.

2. The strap 11 is guided by hand and passes through each part of the strapping machine before being fed to the strap rail 18, which is very cumbersome and inconvenient. In addition, the operator often has to bend or extend his hand to the machine housing to complete the guiding operation of the strap.

3. To successfully guide the strap 11 to the strap rail 18, the operator inserts the initial portion of the strap into the strap-feeder 17 and prevents the strap 11 from slipping back into the strap reservoir 15, To hold the strap 11 in place by hand, press it. However, because the opening 16 at the top of the strap reservoir 15 is small and the distance between the opening 16 and the inlet of the device 17 is short, the strap-feeder 17 is pushed in and the strap 11 is closed. At the same time, when moving forward at high speed, it is very likely that the hand of the operator holding the strap 11 will collide dangerously with the device 17.

4. The strap feeding step of the conventional strap feeding mechanism is very complicated and requires a lot of time and labor, so the automatic strapping machine has low efficiency in its operation.

After the package is tied up in the automatic strapping machine, the strap 11 is automatically provided to the strap rail 18 for the next strapping operation. While the strap is automatically fed to the strap rail 18, there are cases where the strap 11 is not fed to the intended position for the next strapping. In this case, when the ruler of the strap-supply device 17 pushes the strap 11 backwards and winds it tightly against the strapped package, the strap 11 is completely pulled back into the strap reservoir 15. At this time, the operator exposes the strap reservoir 15 to insert the initial portion of the strap 11 into the strap supply 17, so that the strap 11 can be provided to the strap rail 18, which is a lot of difficulty for the operator It can be time consuming and time consuming, and the cause of this condition can be either a mechanical problem of the mechanism or the strap itself, so a lot of mistakes and trial and error are needed to find out the actual cause. The same movement to guide and insert the strap 11 will be repeated after each test. Workers will inevitably lose patience with this time-consuming task.

Thus, the inventors have sought to develop a strap feeding mechanism for an automatic strapping machine in order to eliminate the drawbacks existing in conventional strap feeding mechanisms.

[Technical Challenges to be Done]

The strap feeding mechanism for the automatic strapping machine according to the present invention includes a mechanism for providing the strap quickly and a mechanism for automatically refeeding the strap. The quick strap-feed mechanism can provide the initial part of the strap quickly and automatically to the strap rail of the automatic strapping machine. And, the mechanism for automatically resupplying the strap can automatically provide the strap as the strap slides on the strap rail.

The rapid strap-feeding mechanism of the present invention mainly includes a fixed panel and a cover panel. The fixed panel has a strap guide channel, the lower end of the strap guide channel is coupled to the outlet of the strap-storage power unit in the strapping machine, and the upper end of the strap guide channel is coupled to the strap inlet of the strap-feeder in the strapping machine. It is. The vertical middle section of the strap guide channel has only one side wall. The cover panel is assembled to the fixed panel to form the front cover of the fixed panel. The vertically movable movable plate is fixed to the cover panel so that when the vertical movable plate is in the normal position, the front edge of the movable plate does not protrude into the fixing panel. When the initial portion of the strap is fed to the strap rail, the first electromagnetic screw rod is actuated to run so that the front edge of the movable plate faces the stationary panel by 45 degrees, so that the front part of the movable plate is Form another sidewall of the vertical section.

A drive wheel driven by a small motor is provided on one side of the section of the strap guide channel between the strap-feeder and the strap reservoir. The drive wheel is arranged such that a portion of the drive wheel extends into the strap guide channel. An arm member driven by the second electromagnetic threaded rod is provided on the other side of the strap guide channel opposite the drive wheel. The rotatable wheel is pivotally coupled to the free end of the arm member. When the second electromagnetic screw rod is actuated, the rod drives the arm member into the strap guide channel such that the rotatable wheel pivotally coupled to the free end of the arm member contacts and presses the drive wheel of the strap guide channel. do.

The strap-feeding mechanism includes a strap-feeding device with an upper movable sheet for supporting the roller to feed the strap forward. The pressing plate is provided on the movable sheet adjacent to the second end of the strap-feeder opposite the strap inlet of the first end of the strap-feeder. When the strap-feeding roll pulls the strap back to hold the package firmly and the strap slides the strap rail and the strap-feeding device, the strap-feeding roller installed on the movable seat of the second end has no strap passing through the roller. Go down. The pressure plate provided on the movable seat simultaneously descends to contact the underlying microswitch, which immediately alternately actuates the second electromagnetic screw rod so that the rotatable wheel associated with the arm member extends into the strap guide channel. To clamp the drive wheel and the sliding strap together. Then, the small motor is operated to rotate the drive wheel and send the strap back to the strap-feeding device while allowing the strap to be fed back to the strap rail by the strap-feeding roller.

[Configuration and Action of Design]

The present invention is directed to a strap-feeding mechanism for an automatic strapping machine. The strap-feed mechanism further includes a strap-feed mechanism and a strap-feed mechanism.

The rapid strap-feeding mechanism of the present invention, as shown in FIG. 2, comprises a fixing panel 30 and a cover panel 40 and is installed in the automatic strapping machine 50.

At the same time, see FIG. 2, FIG. 3 and FIG. The fixed panel 30 has a strap guide channel 31 for the purpose of guiding and moving the strap 60 forward. The guide channel 31 has a lower end coupled to the strap outlet of the strap-storage power unit 51 of the automatic strapping machine 50 and a strap inlet 53 of the strap-feeder 20 of the strapping machine 50. It has a top portion coupled to. The vertical middle section of the strap guide channel 31 has only a right wall 32 projecting forward from the regular surface of the fixed panel 30 (as viewed in front of the drawing). The left side of the strap guide channel 31 forms a vertical opening 33.

The cover panel 40 is assembled to the front side of the fixed panel 30. A vertically extending movable plate 41 is fixedly mounted on the vertical shaft 42, and the vertical shaft 42 is turned by 45 degrees while moving the plate 41 from the normal position to the protruding position. It may be driven by the first electromagnetic screw rod 43. In FIG. 5, when the plate 41 is in the normal position, the front edge opposite the shaft 42 does not protrude from the cover panel 40 to the fixed panel 30. In FIG. 6, when the first electromagnetic screw log 43 is actuated, the plate 41 is oriented by 45 degrees along the shaft 42, forming the left wall of the vertical middle section of the guide channel 31. Is switched to extend to the fixed panel 30. At this time, the strap 60 can be guided to the guide channel 31 having the complete right and left walls of the strap-feeder 20.

3 and 7, the small motor 61 is provided on the upper left side of the guide channel 31, and passes through the cut 36 formed on the upper left wall of the guide channel 31 to the guide channel. Rotate the drive wheel 62 with the portion extending. A second electromagnetic screw rod 63 is provided on the upper right side of the guide channel 31 to rotate the arm member 64. The rotatable wheel 65 is pivotally coupled to the free end of the arm member 64. When the second electromagnetic screw rod 63 is actuated to rotate the arm member 64, the rotatable wheel 65 moves along the arm member and a cut portion 37 formed on one of the right walls 32. It extends into the guide channel 31 via the contact, pressurizes in contact with the drive wheel 62.

In FIG. 7, the strap-supply device 20 has a lower fixation sheet 21 and an upper movable sheet 22 on the lower fixing sheet 21, the movable sheet 22 having a pivot center ( 23) can be rotated slightly. Damping spring 26 is coupled to the left end of the movable seat 22 to pull the left end of the movable seat 22 vertically downward. Since this is a prior art, it is not described in detail herein. It should be noted that the pressing plate 25 is provided at the leftmost end of the movable sheet 22. The roller of the strap-feeding device 20 pulls the strap 60 back so that the strap 60 is tightened around the package and the strap 60 unexpectedly straps-feeding device 20 of the automatic strapping machine 50. As shown in FIG. 8, when slipping on the strap rail 55, there is no strap 60 passing under the strap-feeding roller 24 supported at the left end of the movable seat 22. Slightly down, this is indicated by the microswitch (below the pressure plate 25 below the pressure plate 25 at the leftmost end of the movable seat 22, as shown in FIGS. 10 and 11). 27) to execute. At this time, the second electromagnetic screw rod 63 tightens the strap 60 in which the rotatable wheel 65 at the free end of the arm member 64 is retracted together with the drive wheel 62 so that the strap 60 is no longer present. It is operated to drive the lower arm member so that the arm member rotates by a predetermined angle while executing to prevent slipping back. When the automatic strapping machine 50 completes the second strapping movement (preset movement in the automatic strapping machine), the small motor 61 is activated to drive the drive wheel 62 to rotate, thereby driving The strap 60 tightened between the wheel 62 and the rotatable wheel 65 moves forward and is fed back to the strap rail 55.

In order to ship the initial part of the strap to the automatic strapping machine, the movable plate 41 is rotated by 45 degrees, perpendicular to the fixed panel 30 as shown in FIG. 6 and the strap on the fixed panel 30. In order to form the left wall with respect to the vertical middle section of the guide channel 31, the first electromagnetic screw rod 43 is first activated. The strap 60 is then pulled into the automatic strapping machine 50 via the insertion opening 54 formed in the outer wall of the machine 50 so that the strap 60 enters the strap-storage power unit 51. Extend. At this time, the strap-storage motor of the strap-storage power unit 51 (not shown in the drawings herein as a known element), the small motor 61, and the second electromagnetic screw rod 63 are operated simultaneously to strap 60 is sent to strap feeder 20. Due to the strap 60 passing between the rollers of the strap-feeder 20, the left end of the movable seat 22 is executed to rise, which is below the leftmost end of the movable seat 22. Since the microswitch does not come into contact and pressurizes, it means that the small motor 61 and the second transfer machine screw rod 63 are executed to stop operation. On the other hand, the first electromagnetic threaded rod 43 may also be generated as the strap reservoir 52 continuously movable, as shown in FIG. When the strap reservoir 52 is completely filled with the strap 60, the strap storage motor of the strap-store power device 51 is stopped. At this time, the strap-supply motor (not shown) is operated to drive the strap-supply device 20 so that the strap 60 is supplied to the strap rail 55. The automatic strapping machine 50 is then ready for work. From the above technique, in the automatic strapping machine with the strap-feeding mechanism of the present invention, the feeding operation of the strap needs not to open any door covering the machine 50. That is, the strap 60 can be provided quickly and automatically, and the strap 60 pulled back during the automatic strapping operation is carried out through the opening 33 formed on the left side of the strap guide channel 31. You can enter smoothly.

As shown in FIGS. 3 and 4, the vertical shaft 42 fixedly supporting the movable plate 41 is coupled to the spindle 45 of the first electromagnetic screw rod 43 by a coupling 44. By coupling to the shaft 42 moves with the spindle 45. When the first electromagnetic screw rod 43 is powered, the spindle 45 will rotate by a predetermined angle, which in this invention is fixed at 45 degrees. When power is removed from the first electromagnetic screw rod 43, the spindle 45 is returned to its original position by a return spring (not shown).

The cover panel 40 may be fixedly locked to the fixed panel 30, but in order to facilitate troubleshooting during the automatic strapping operation, the hinge 46 is well coupled to the right side of the fixed panel 30. The cover panel 40 may pivotally rotate with respect to the fixed panel 30. The magnet 34 is provided at the upper left corner of the fixing panel 30 so that the cover panel 40 is pulled by the magnetic panel by the magnetic attraction to block the front of the fixing panel 30. A pull ring 47 may be provided in the cover panel 40 so that the cover panel 40 can be conveniently pulled open from the fixing panel 30. The length of the stopping wall 35 extends from the upper initial portion of the opening 33 to the left side at the left side of the vertical middle section of the guide channel 31, so that the strap 60 rests against the stopping wall 35. Thus smoothly guided to strap reservoir 52.

The operation for strap-feeding of the automatic strapping machine according to the present invention is such that the movable plate 41 on the cover panel 40 is rotated 45 degrees to form the left wall of the strap guide channel 31 on the fixed panel 30. In order to actuate the first electromagnetic screw rod 43, it may simply be executed by pressing a pushbutton switch. Then, when the rollers of the strap-storage power device 51 and the strap-supply device 20 are rotated at the same speed, the strap 60 is quickly supplied to the strap rail 55 on the automatic strapping machine 50. The machine 50 is then ready for immediate use. In this arrangement, the present invention provides a strap simply, easily and quickly for an automatic strapping machine. While the strap 60 is pulled back during the strapping operation, when the strap 60 unexpectedly slips on the strap rail 55 and the strap-feeder 20, the strap 60 straps for the next strapping operation. It can be automatically resupplied to the rail 55, which greatly improves the operation of feeding the strap in the automatic strapping machine.

Claims (3)

By including a quick strap-feeding mechanism for quickly feeding the initial portion of the strap to the strap rails on the automatic strapping machine, and an automatic strap-refeeding mechanism for tightening the strap that slides on the strap rail during the pullback operation; Strap-feeding mechanism for an automatic strapping machine, which prevents the strap from slipping further back and automatically refeeds back to the strap rail. 2. The fastening strap-feeding mechanism of claim 1, wherein the quick strap-feeding mechanism comprises a fastening panel and a cover panel, the fastening panel having a strap guide channel, the lower end of the strap guide channel being coupled to a strap inlet of the automatic strapping machine. And an upper end of the strap guide channel is coupled to a strap inlet of the strap-feeder of the machine, the strap guide channel having only one side wall and defining a vertical opening of the other side opposite the strap reservoir of the strap machine. It has a vertical intermediate straight section, the cover panel is assembled to the front of the fixed panel and has a vertically extending plate, the plate is driven by the first electromagnetic screw rod to rotate 45 degrees from the normal position to the working position The front edge of the plate in the normal position forms a flat surface with the cover panel, Feed mechanism - the front edge of the plate is automatically strap for the strap ping machine, characterized in that the closure part to the vertical opening, projecting into the fixed panel, forming the other side wall of the strap guide channels in the working position. 2. The system of claim 1, wherein the automatic strap-refeed mechanism comprises a drive wheel provided at the left side of the upper end of the strap guide channel and a rotating wheel provided at the right side of the upper end of the strap guide channel opposite the drive wheel; A pressurizing plate provided on the movable seat of the strap-feeder at an end opposite the strap inlet of the feeder, and a microswitch provided under the presser plate, the drive wheel being driven by a small motor to rotate And a portion extending into the strap guide channel via a cut on the guide channel, the rotary wheel being pivotally driven at the free end of the arm member operable to rotate by being driven by the second electromagnetic screw rod. Guides the strap to engage and press against the drive wheel A portion extending into the strap guide channel via another cut on the channel, wherein the pressure plate is in an elevated position that does not contact the microswitch when the strap passes under the movable seat of the strap-feeder. The pressure plate being in contact with the microswitch, for the purpose of immediately operating the second electromagnetic screw rod to slide the strap-feeder to rotate the arm member and the rotating wheel. The rotating wheel tightens the strap together with the drive wheel to prevent the strap from slipping further back, the strap tightened by the drive wheel and the rotation wheel rotates the drive wheel. When the small motor is started and the strap-feeder is activated again And straps for automatic strap ping machine, characterized in that the material fed to the strap by rail-feed mechanism.