CN2492464Y - Strap tension adjustment device for strapping machine - Google Patents

Abstract

A tension regulator for the strap of bundling machine is composed of a tension arm with a pivoted slot seat with a pivoted slot and a slot, a driven rod in said slot and with an elastic element, a pivoted rod passing through said pivoted slot, a clamping unit on said pivoted rod, a braking block on said driven rod, a drive motor on said braking block, a controller electrically connected to said drive motor, and a delay starter electrically connected to said drive motor. The device can simply control the tension of the binding belt of the binding machine and control the tightness of the binding belt for binding the bound objects.

Description

Strap tension adjustment device for strapping machine

The utility model relates to a strap tension adjusting device of a strapping machine.

As shown in Figures 1 and 2, the tension adjustment device of a general strapping machine, the strapping machine 1 has a machine platform 11, a transmission group 12 arranged in the machine platform 11 and a belt guide mechanism for conveying the belt 2 13. The transmission unit 12 further has a transmission motor 121, a transmission shaft 122 driven by the transmission motor 121, and a transmission cam 123 connected to the end of the transmission shaft 122. The belt tension adjusting device 3 is installed between the belt guide mechanisms 13, and is used to control the length of the belt 2 on the belt guide mechanism 13 by reversely pulling it, and then adjust the tightness of the belt 2 to tighten the package. A device comprising a tension arm 4 that can be rotated and displaced relative to the transmission cam 123, a belt clamping mechanism 5 arranged on the tension arm 4 and a belt clamping mechanism that can be relatively controlled 5 clamp the eccentric adjustment mechanism 6 of the drawstring 2.

The tension arm 4 has a tension rod 41 pivotally arranged on a pivot seat 111 of the machine table 11 and a resisting wheel rod 42 resisting on the transmission cam 123. The tension rod 41 further has a pivoting groove seat 411, An elastic element 412 hooked between the tension rod 41 and a frame body 112 of the machine table 11, a track 413 that can be connected to the end of the pivoting groove seat 411 and can move relatively with the tension rod 41, The track 413 can be sleeved on a belt conveying path 131 of the belt guide mechanism 13. In addition, the pivoting groove seat 411 has a longitudinal pivoting groove 414 and a horizontally disposed between the pivoting grooves 414. The accommodating groove 415 is provided, and the pivoting groove 414 can be relatively connected to the track 413 .

As shown in Figures 3 and 4, the strap clamping mechanism 5 has a driven rod 51 arranged in the accommodating groove 415, an elastic element 52 that can be pressed on the driven rod 51, a transverse pivot The pivot bar 53 between the pivoting slots 414 , and a clamping member 54 disposed on the pivot bar 53 and movable with the driven bar 51 .

As shown in Figures 2, 3, and 4, the eccentric adjustment mechanism 6 has an eccentric adjustment lever 61, an eccentric wheel 62 arranged on the eccentric adjustment lever 61, and an eccentric wheel 62 pivoted on the same pivot 113 as the tension lever 41. A pivotal rod 63 and a braking rod 64, the pivotal rod 63 further has a stop rod 631 positioned on the side of the eccentric wheel 62 and a hooking part 632 fixed on the pivotal rod 63, and The brake lever 64 further has an elastic element 641 capable of hooking the hooking member 632 relative to it, and a positioning rod 642 protruding to a side of the pivot rod 63 and located below the hooking member 632 .

When in use, as shown in Figures 1, 2, 3, and 4, after the belt 2 in the belt guide mechanism 13 of the strapping machine 1 is pre-bundled, the tension arm 4 can rotate and shift with the transmission cam 123 , so that the pivot rod 63 and the brake rod 64 are displaced accordingly, and correspondingly, the stop rod 631 arranged on the pivot rod 63 will also be displaced toward the eccentric wheel 62, so when the stop When the moving lever 631 is displaced to resist the eccentric wheel 62, the pivoting lever 63 will stop rotating, however, the braking lever 64 will continue to rotate and shift, so that the braking lever 64 is pulled by the elastic element 641 Pulling the displacement of the driven rod 51 finally makes the driven rod 51 link with the clamping member 54 to clamp the belt 2 passing through the pivoting groove 414. It can be seen from this that when the eccentric wheel 62 is eccentrically adjusted When the rod 61 is adjusted to be closer to the stop rod 631 on the pivot rod 63, the clamping member 54 will clamp the belt 2 passing through the pivot groove 414 faster; on the contrary, when the When the eccentric wheel 62 is adjusted by the eccentric adjustment rod 61 to the farther the distance from the stop rod 631, the clamping member 54 will clamp the belt 2 passing through the pivoting groove 414 more slowly, thereby adjusting the eccentricity The position of the wheel 62 is to control the stroke of the tension arm 4 pulling the strap 2, that is, to control the tension of the strap 2 to bind the package, so the strap tension adjustment device 3 can achieve the purpose of controlling the tightening of the strap 2. Regarding the tightness of the bundled objects, the above-mentioned belt tension adjustment device 3 requires quite a lot of complicated components to achieve the control of the tension of the bundled objects with the straps 2, so it is easy to cause high manufacturing costs and difficult assembly. circumstances, so that it is not economical.

The purpose of the utility model is to provide a strap tension adjusting device of a strapping machine which is simple in structure, easy to assemble and relatively cost-saving, and can precisely control the strap tension.

In order to achieve the above purpose, the utility model provides a belt tension adjustment device for a strapping machine, which has: a machine table, a transmission group and a belt guide mechanism arranged in the machine table, and the transmission group also has A transmission motor, a transmission shaft connected with the transmission motor and a transmission cam connected to the end of the transmission shaft, characterized in that:

A tension arm has a resisting wheel bar resisting on the transmission cam, and the tension arm also has a pivoting groove seat, and the pivoting groove seat has a longitudinal pivoting groove and a horizontally arranged between the pivoting grooves holding tank;

a follower rod arranged in the accommodating groove;

an elastic element pressed on the driven rod;

a pivot bar, penetrating and pivoting horizontally between the pivoting slots;

a clamping part is arranged on the pivot;

a detent block connected to the follower rod;

a driving motor connected to the stop block;

a controller for starting and stopping the drive motor, electrically connected with the drive motor;

a touch piece, which is arranged on the transmission shaft and relatively touches the controller;

A delayed starter is electrically connected to the drive motor.

The strap tension adjustment device of the strapping machine of the utility model is installed on a strapping machine, and the strapping machine has a machine table, a transmission group arranged in the machine table and a guide belt for conveying the straps mechanism, the transmission group also has a transmission motor, a transmission shaft that can be driven by the transmission motor, a touch piece arranged on the transmission shaft and a transmission cam connected to the end of the transmission shaft, the belt tension The adjustment device is installed between the belt guide mechanism, and is used to control the length of the belt on the belt guide mechanism by pulling it in the opposite direction, and then adjust the tightness of the belt to tighten the package. The transmission cam rotates and relatively rotates and shifts, and has a tension arm with a longitudinal pivoting groove and a transverse accommodation groove, a driven lever arranged in the accommodation groove, and a driven lever that can be pressed on the driven lever. The elastic element, a pivot bar that crosses between the pivoting slots, a clamping piece that is arranged on the pivot bar and can move forward and backward with the driven bar, and a clamping piece that is connected to the driven bar and A detent block that can manipulate the rotation of the driven lever, a drive motor that is arranged on the side of the detent block and can drive the detent block to rotate, and a drive motor that can be relatively activated by the touch piece on the transmission shaft The controller of the motor is connected with the drive motor and has a delay starter which can adjust the delay time for the controller to start the drive motor.

With the above composition, when the driving motor is driven, it can drive the stop block to move the driven rod, and the driven rod will press against the clamping part to clamp the According to this, when the belt in the belt guide mechanism of the strapping machine is pre-bundled, the tension arm can just rotate and shift with the transmission cam, and the touch piece on the transmission shaft will also activate the belt at the same time. The controller of the drive motor, at this time, delays the time length of starting the drive motor by the delay starter, so as to relatively control the tension of the belt to tighten the bundle.

The effects and advantages that can be obtained by the belt tension adjustment device of the utility model strapping machine are as follows:

1. The utility model can set the switch delay time button of the delay starter 104 on the machine table 71, and then the delay starter 104 can be directly rotated to delay the timing of clamping the belt 8, and relatively adjust the belt 8 bundles The tension of the bundled objects can be tightened, so for the user, the operation can be simpler, more convenient and faster.

2. The utility model requires relatively fewer parts and components and is easier to assemble, so it can reduce the cost required for manufacturing, and can more accurately control the tension of the bale, thereby improving the utilization of the industry.

The belt tension adjustment device of the strapping machine of the present utility model will be described in detail below through preferred embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

Fig. 1 is a schematic front view of a general strapping machine, illustrating a band tension adjusting device.

Fig. 2 is a perspective exploded view of a part of the tension adjustment device of a general strapping machine.

Fig. 3 is a three-dimensional schematic diagram of the tension adjustment device of a general strapping machine, illustrating the adjustment state of an eccentric adjustment mechanism.

Fig. 4 is a schematic diagram of a use state of the tension adjusting device of a general strapping machine.

Fig. 5 is a schematic front view of a strapping machine according to a preferred embodiment of the present invention, illustrating the belt tension adjustment device of the strapping machine.

Fig. 6 is a fragmentary view of the preferred embodiment of the present invention, illustrating the relative positions of the components of the strap tension adjusting device of the strapping machine.

Fig. 7 is a schematic diagram of the first use state of the preferred embodiment of the present invention, illustrating the relative positions of the components when the first controller is touched by the first actuating member.

Fig. 8 is a schematic side view taken along line 8-8 in Fig. 7 .

FIG. 9 is a schematic cross-sectional view of a preferred embodiment of the present invention, illustrating a state of a driving motor after the clamping member clamps the belt.

Fig. 10 is a schematic view of the second use state of the preferred embodiment of the present invention, illustrating the relative positions of the components when the second controller is touched by the second actuator.

Fig. 11 is a schematic side view taken along line 11-11 in Fig. 10 .

Fig. 12 is a schematic diagram of the third use state of the preferred embodiment of the present invention, illustrating the relative positions of the components when the third controller is touched by the third actuator.

Fig. 13 is a schematic side view taken along line 13-13 in Fig. 12 .

As shown in Figures 5, 6, and 9, the belt tension adjustment device of a strapping machine in a preferred embodiment of the present invention, the strapping machine 7 has a machine platform 71, and a transmission group 72 arranged in the machine platform 71 And a guide belt mechanism 73 for conveying the belt 8, the transmission group 72 further has a transmission motor 721, a transmission shaft 722 that can be driven by the transmission motor 721, and a transmission that is connected to the end of the transmission shaft 722. The cam 723 and the first, second, and third contact pieces 724 , 725 , and 726 are respectively arranged on the transmission shaft 722 . The belt tension adjustment device 9 is installed between the belt guide mechanism 73, and is used to control the length of the belt 8 that is pulled back into the belt guide mechanism 73, and then adjust the belt 8 to tighten the tightness of the package. A kind of device of degree, comprises a tension arm 91, a follower lever 92, a pivot 93, an elastic element 94, a clamping part 95, a catch block 96, a drive motor 97, a first controller 101 , a second controller 102 , a third controller 103 and a delay starter 104 .

The tension arm 91 can be rotated and displaced relative to the rotation of the transmission cam 723, and has a tension rod 911 pivotally arranged on a pivot seat 711 of the machine table 71 and a resisting wheel lever 912 resisting on the transmission cam 723 , the tension rod 911 further has a pivoting groove seat 913, an elastic element 914 hooked between the tension rod 911 and a frame body 712 of the machine table 71, and an end that can be connected to the pivoting groove seat 913. part of the track 915 that can move relatively with the tension rod 911, and the track 915 can be sleeved on a belt conveying path 731 of the belt guide mechanism 73. In addition, the pivoting groove seat 913 has a longitudinal pivot The connecting groove 916 and a receiving groove 917 are disposed transversely between the pivoting grooves 916 , and the pivoting groove 916 can be relatively connected to the track 915 .

The driven rod 92 is disposed in the accommodating groove 917 .

The pivot rod 93 is transversely pivoted between the pivot slots 916 .

The elastic member 94 is disposed on the pivot rod 93 , and one end thereof can press the driven rod 92 so that the driven rod 92 is positioned toward the sealing end of the accommodating groove 917 .

The clamping member 95 is disposed on the pivot rod 93 and can move forward and backward along with the driven rod 92 .

The detent block 96 is sleeved on the driven rod 92 and can be displaced relative to the driven rod 92 .

The drive motor 97 is connected to the stop block 96 and can drive the stop block 96 to rotate and shift.

The first controller 101 and a second controller 102 can control the forward and reverse rotation of the driving motor 97 by touching the corresponding first and second touch pieces 724, 725 on the transmission shaft 722. In addition, the first The controller 101 can be further connected to the belt guide mechanism 73, so that when the first controller 101 is activated, the belt guide mechanism 73 can be relatively activated to tighten the belt 8 to tighten the package.

The third controller 103 can relatively control the start and stop of the belt guide mechanism 73 and the transmission motor 721 by actuating the corresponding third contact member 726 on the transmission shaft 722 .

The delay starter 104 is connected to the drive motor 97 and has a delay start time for the first controller 101 to start the drive motor 97 to rotate.

When in use, as shown in Figures 5, 6, 7, 8, and 9, when the operator places the bundled objects on the machine platform 71 of the strapping machine 7 and starts the strapping machine 7 to perform the strapping action, the drive shaft 722 will be driven by the transmission motor 721 of the strapping machine 7 to rotate, and the transmission cam 723 and the first, second and third contact pieces 724, 725, 726 will also rotate thereupon.

When the transmission shaft 722 is driven by the transmission motor 721 and continues to rotate, the first controller 101 will be touched by the first touch piece 724 first, and at this time, the belt guide mechanism 73 will pull back the belt 8 to pre-bundle the package Then, the transmission shaft 722 continues to rotate, so that the resisting wheel lever 912 of the tension arm 91 is just at the critical point where the transmission cam 723 gradually protrudes, and at this moment, the first controller 101 will send a signal to the driving motor 97 The delay actuator 104, then, the resistance wheel lever 912 of the tension arm 91 will be pushed by the convex surface of the transmission cam 723, so that the tension arm 91 will produce a rotational displacement phenomenon, and the delay actuator 104 will be delayed according to the delay. At the starting time, start the driving motor 97 again to drive the stop block 96 to drive the driven rod 92 to shift, so that the clamping member 95 clamps the strap 8 passing through the tension arms 91, so the tension arms 91 shift The stroke is the effective distance for the tension adjustment of the belt 8, therefore, the operator only needs to adjust the delay start time of the drive motor 97 of the delay starter 104, such as 0.1 second, 0.2 second... etc., to adjust the tension arm 91 When the clamping member 95 on the top clamps the strap 8, and then relatively controls the tension of the strap 8 to tighten the bale, that is to say, the shorter the delay time, the higher the bale tension can be obtained.

As shown in Figures 5, 6, 10, and 11, continuing the above actions, under the continuous rotation of the transmission shaft 722, the resisting wheel rod 912 of the tension arm 91 will gradually shift to resist the tapered surface of the transmission cam 723 At the critical point, at this time, the second controller 102 can just be touched by the second touch piece 725, and relatively controls the drive motor 97 to reverse the detent block 96, so that the clamping piece 95 releases the bundle belt 8, and before the belt 8 is unclamped, the binding of the bundle is completed by the belt joint and belt cutting device of the strapping machine 7 (not shown).

Finally, as shown in Figures 5, 6, 12, and 13, if the transmission shaft 722 continues to rotate, the tension arm 91 will be pulled by the elastic element 914 and gradually return with the wheel surface of the transmission cam 723, and the guide The belt mechanism 73 will also transport the strap 8 to the initial state, and when the power transmission shaft 722 will rotate a circle, each of the components can return to the initial state. Touched, and then stop the transmission motor 721 to drive the transmission shaft 722 to rotate, and a stroke of binding the bundle is completed.

Claims (1)

1. A belt tension adjustment device for a strapping machine, the strapping machine has: a machine platform, a transmission group and a belt guide mechanism arranged in the machine platform, the transmission group also has a transmission motor, a The transmission shaft connected to the transmission motor and a transmission cam connected to the end of the transmission shaft are characterized in that: A tension arm has a resisting wheel bar resisting on the transmission cam, and the tension arm also has a pivoting groove seat, and the pivoting groove seat has a longitudinal pivoting groove and a horizontally arranged between the pivoting grooves holding tank; a follower rod arranged in the accommodating groove; an elastic element pressed on the driven rod; a pivot bar, penetrating and pivoting horizontally between the pivoting slots; a clamping part is arranged on the pivot; a detent block connected to the follower rod; a driving motor connected to the stop block; a controller for starting and stopping the drive motor, electrically connected with the drive motor; a touch piece, which is arranged on the transmission shaft and relatively touches the controller; A delayed starter is electrically connected to the driving motor.

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