Binding machine

Abstract

To provide a user-friendly binding machine.SOLUTION: The binding machine includes an outer roller group 3, an inner roller group 5, and a feed roller 7, wherein the outer roller group 3 is disposed in a substantially ring shape along an outer side of a movement trajectory K of a resin sheet 2, the inner roller group 5 is disposed so as to be movable between a position along an inner side of the movement trajectory K of the resin sheet 2 and a retracted position, and the feed roller 7 can feed the resin sheet 2 toward the movement trajectory K and pull back the resin sheet 2 from the movement trajectory K. The resin sheet 2 is wound around the object P to be bound by pulling back the resin sheet 2 in a state where the inner roller group 5 is retreated with respect to the object P to be bound arranged in the resin sheet 2 formed in a substantially ring shape by feeding the resin sheet 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a binding machine. [Background technology]

[0002] Aluminum sash profiles and other materials may be bound together with resin sheets for protection. Although bundling machines for bundling such resin sheets are known, there has been a demand for a bundling machine that is easy to use. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, an object of the present invention is to provide a binding machine that is easy to use. [Means for solving the problem]

[0004] The invention of claim 1 is a binding machine comprising an outer roller group, an inner roller group, and a feed roller, wherein the outer roller group is arranged in a roughly ring-like shape along the outside of the movement trajectory of the resin sheet, and the inner roller group is arranged so as to be freely movable between a position along the inside of the movement trajectory of the resin sheet and a retracted position, and the feed roller is capable of feeding the resin sheet toward the movement trajectory and pulling the resin sheet back from the movement trajectory, and the resin sheet is placed inside the resin sheet which has been formed into a roughly ring-like shape by feeding out the resin sheet, and the binding machine wraps the resin sheet around the object to be bound by pulling back the resin sheet with the inner roller group retracted. [Effects of the Invention]

[0005] According to the invention described in claim 1, the resin sheet fed out by the feed roller moves along the outer roller group and the inner roller group, arranging it in an approximately circular shape, so the user only needs to place the object to be bound inside the ring of the inner roller group, after which the inner roller group retracts and the feed roller pulls back the resin sheet, automatically wrapping it around the object to be bound, making it easy to use. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, in an initial state of the binding machine; [Figure 2] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a resin sheet feeding process. FIG. [Figure 3] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a process of placing an object to be bound. FIG. [Figure 4] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a retraction process of a guide roller and a guide plate. FIG. [Figure 5] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a process of starting to wrap a resin sheet. FIG. [Figure 6] FIG. 2 is a front view showing the schematic configuration of the binding machine according to the embodiment of the present invention, illustrating the process of completing the winding of the resin sheet. [Figure 7] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a resin sheet welding and cutting process. FIG. [Figure 8] 1 is a front view showing a schematic configuration of a binding machine according to an embodiment of the present invention, illustrating a retraction process of a welding machine and a welding receiving plate. FIG. [Figure 9] 1A and 1B are diagrams showing the appearance of a binding machine according to an embodiment of the present invention, in which FIG. 1A is a front view and FIG. 1B is a left side view. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 9, the binding machine 1 according to this embodiment includes a main body 9 in which an outer roller group 3, an inner roller group 5, and a feed roller 7 are arranged inside a cover 1A. Next to the main body 9, there is arranged a resin sheet supply section 11 on which a resin sheet 2 is wound, and a reel stand section 15 equipped with a supply roller 13 that guides the resin sheet 2 taken out from the resin sheet supply section 11 to the main body 9. The resin sheet 2 is a polyethylene sheet.

[0008] Figures 1 to 8 show a schematic view of the internal structure of the cover 1A of the main body 9, and the dotted lines show a side view of a pair of outer rollers 3a, 3a of the outer roller group 3 and a pair of inner rollers 5a, 5a of the inner roller group 5 facing them. 1, the outer roller group 3 is arranged in a generally ring shape along the outside of the movement locus K of the resin sheet 2. In this embodiment, the outer roller group 3 is arranged in a generally rectangular ring shape when viewed from the front. In the outer roller group 3, a pair of outer rollers 3a, 3a are provided on the front side and rear side, respectively (see FIG. 9(b)), and a large-diameter resin sheet support portion 3b is provided on the movement locus K side of each. Auxiliary rollers 3c are arranged on the rising and upper sides of the approximately rectangular movement locus K. The auxiliary rollers 3c are rollers that have driving force. In addition, corner guides 4 are arranged at each corner of the approximately rectangular movement locus K to guide the movement of the resin sheet 2 at the corners.

[0009] In the inner roller group 5, a pair of inner rollers 5a, 5a are provided on the front and rear sides facing the pair of outer rollers 3a, 3a (see FIG. 9(b)), and a large-diameter resin sheet support portion 5b is provided on each side of the movement locus K. The pair of inner rollers 5a, 5a are movable in directions away from each other (directions F and B shown in FIGS. 4 and 9(b)), and are arranged to be movable between a position along the inside of the movement locus K of the resin sheet 2 and a retracted position. The retracted positions of the pair of inner rollers 5a, 5a are positions away from the resin sheet 2 arranged on the movement trajectory K (see FIG. 4). The pair of inner rollers 5a, 5a are engaged with a single moving plate on the opposing front side and rear side, and when the moving plates move in directions away from each other (directions F and B shown in FIGS. 4 and 9(b)), each roller 5a moves simultaneously to the retracted position. 1 to 8, the pair of inner rollers 5a, 5a, the clamp unit 17 (described later), the guide plate 21, and the welding receiver 23 are shown by dashed lines when they are in their retracted positions. The guide plate 21 guides the resin sheet 2 to prevent it from falling off, and also serves as a base for the objects to be bound depending on the size of the extrusion.

[0010] The feed roller 7 receives the resin sheet 2 supplied from the supply roller 13 (see Figure 9) of the reel stand section 15 (see Figure 9), and can feed the resin sheet 2 toward the movement trajectory K (see Figure 2), and can pull the resin sheet 2 back from the movement trajectory K (see Figure 5).

[0011] The movement trajectory K has a roughly rectangular shape when viewed from the front and is roughly loop-shaped, and on its lower side there are provided a clamp unit 17 that holds the leading end of the resin sheet 2 and a wrapping processing section 19 that wraps the resin sheet 2 around the object P to be bound. The clamp unit 17 is provided so as to be movable to two positions: a position on the movement path K of the resin sheet 2 (shown by a solid line in FIG. 2) and a retracted position (shown by a dashed line in FIG. 1) retracted from the position of the movement path K. The retracted position of the clamp unit 17 is a position where the clamp unit 17 has moved in the retraction direction of the pair of inner rollers 5a, 5a (either the F direction or the B direction shown in FIG. 4).

[0012] The winding processing section 19 is provided with a guide plate 21, a welding receiving plate 23, a welding unit 25, and a cutting blade 27. Like the clamp unit 17, the guide plate 21 and the welding receiving plate 23 are provided so as to be movable between two positions: an inner position (shown by a solid line in FIG. 1) of the movement locus K of the resin sheet 2, and a retracted position (shown by a dashed line in FIG. 8) retracted from the inner position of the movement locus K. The retracted position of the clamp unit 17 is a position reached by movement in the retraction direction of the pair of inner rollers 5a, 5a (direction F or B shown in FIG. 4). In this embodiment, the welding unit 25 is a welding horn that emits ultrasonic waves to ultrasonically weld the resin material, and in this embodiment, two welding units are provided spaced apart in the width direction of the object to be bound P. The welding unit 25 is provided so that it can move up and down, and when welding, it moves upward and brings its upper end into contact with the resin sheet 2 that has been wrapped around the object to be bound P and overlapped (see FIG. 7), and travels around the movement locus K to weld the two overlapping resin sheets 2. After welding, it descends and is held in a standby position (see FIG. 1) away from the resin sheets 2. The cutting blade 27 moves in the width direction of the resin sheet 2 (through the paper surface of Figure 1) to cut the resin sheet 2, and is positioned with the cutting edge pointing diagonally upward from below relative to the movement trajectory K of the resin sheet 2.

[0013] As shown in Figure 9, support members 29 that support the object P are provided on the front and rear sides of cover 1A of main body 9 and can be lowered, and as will be described later, support member 29 is designed to lower simultaneously when a foot pedal (not shown) is depressed. Support member 29 supports object P at a position that is offset from the position where resin sheet 2 binds object P. Support member 29 is in the form of a roller, so that object P can be positioned by pushing or pulling it while receiving it. The main body 9 is provided with an object guide 31 (see FIG. 9(a)) for guiding the position of the object P in the left-right direction.

[0014] Next, the operation of the binding machine 1 will be described for each step. (1) Initial state As shown in FIG. 1, the initial state is a state before the resin sheet 2 is sent out along the movement path K, and each inner roller 5a of the inner roller group 5 is positioned so as to sandwich the movement path K with the outer roller 3a of the outer roller group 3. The guide plate 21 and the welding receiving plate 23 are located inside (above) the movement path K of the resin sheet 2, and the clamp unit 17 is located at a retracted position outside the movement path. The welding unit 25 and the cutting blade 27 are at standby positions outside (below) the movement path K.

[0015] (2) Resin sheet feeding process By turning on the power and pressing the operation start button, the feed roller 7 is driven to rotate in the direction M as shown in FIG. 2, and the resin sheet 2 supplied from the supply roller 13 (see FIG. 9) of the reel stand section 15 (see FIG. 9) is sent out along the movement trajectory K. At this time, the auxiliary roller 3c of the outer roller group 3 is also driven to assist the movement of the resin sheet 2. Note that in the second and subsequent binding operations of the object to be bound P, once the wound object P is removed, a sensor (not shown) detects that the object to be bound P is no longer present, and the resin sheet 2 is automatically sent out. The fed resin sheet 2 moves in the G direction along a roughly circular movement trajectory K that is roughly rectangular when viewed from the front, and after making one full circle around the movement trajectory K, a detector (not shown) detects the leading edge of the resin sheet 2. Then, the clamp unit 17 moves from the retracted position (see Figure 1) to the inside (upward) of the movement trajectory K of the resin sheet 2 and fixes the leading edge side of the resin sheet 2.

[0016] (3) Placement of the objects to be bound As shown in FIG. 3 and FIG. 9(b), the object P to be bound is inserted inside the approximately loop-shaped movement path K and placed on the support member 29 (see FIG. 9). At this time, the object P can be easily placed by pressing its side against the object guide 31 and pushing it in.

[0017] (4) Guide roller and guide plate retraction process Next, when the operator steps on the foot pedal (not shown), the support member 29 (see FIG. 9) descends and the guide plate 21 moves to the retracted position as shown in FIG. 4. As a result, the object P rests only on the welding receiving plate 23. At the same time, as shown by the dashed lines in FIG. 4, each pair of inner rollers 5a, 5a of the inner roller group 5 moves in opposite directions (directions B and F) to a retracted position deviated from the movement locus K.

[0018] (5) Guide roller and guide plate retraction process Next, as shown in FIG. 5, the feed roller 7 rotates in the N direction opposite to the direction in which the resin sheet 2 is fed out, and pulls the resin sheet 2 back. As a result, the resin sheet 2 is pulled into the inside of the loop of the movement locus K so as to make the loop smaller, and as shown in FIG. 5, the resin sheet 2 gradually makes the loop surrounding the object P to be bound smaller.

[0019] (6) Resin sheet wrapping process Then, the feed roller 7 is further rotated in the N direction, and when the resin sheet 2 is completely pulled back, the tension of the resin sheet 2 is detected and the rotation of the feed roller 7 is stopped as shown in FIG. As a result, the resin sheet 2 is tightly wrapped around the object P to be bound. The clamp unit 17 and the welding receiver 23 are wrapped around the resin sheet 2 together with the object P to be bound.

[0020] (7) Resin sheet welding and cutting process 7, the welding unit 25 rises, and its tip goes around the objects P and comes into contact with the overlapping resin sheets 2, welding the overlapping resin sheets 2. In this embodiment, the welding unit 25 is an ultrasonic welder, so welding is performed by ultrasonic waves. Almost simultaneously, the cutting blade 27 moves in the width direction of the resin sheet 2 (the direction penetrating the paper) to cut the resin sheet 2. Furthermore, in synchronization with the timing at which the cutting blade 27 moves, the clamp unit 17 moves to the retracted position.

[0021] (8) Welding unit and welding receiving plate retraction process After welding is completed, as shown in FIG. 8, the welding unit 25 descends, and at the same time, the welding receiving plate 23 moves to the retreat position. Then, the worker removes the object P bound with the resin sheet 2 from the binding machine 1, and the process is finished.

[0022] The binding machine 1 then returns to the initial state (1) shown in FIG. 1 and then starts the resin sheet feeding process (2) shown in FIG. 2, repeating the above-mentioned process up to the retraction process of the welding unit and the welding receiving plate (8) to sequentially bind the objects P inserted inside the main body 9. That is, when the binding machine 1 is turned on and the operation start button is pressed, the resin sheet 2 is fed between the outer roller group 3 and the inner roller group 5 of the main body 9 to form a ring that is generally rectangular in front view. When the object P to be bound is placed inside the generally rectangular ring of the main body 9 and placed on the support member 9, and the foot pedal is depressed, the inner roller group 5 moves to the retracted position, and the resin sheet 2 arranged in a generally circular shape is wrapped around the object P to be bound. After the object P is welded by the welding unit 25, the resin sheet 2 is cut. Then, when the object P around which the resin sheet 2 is wrapped is removed, the next resin sheet 2 is fed between the outer roller group 3 and the inner roller group 5 of the main body 9 to form a ring that is generally rectangular in front view. In this manner, the resin sheet 2 can be wound around the object P to be bound in sequence.

[0023] Next, the effects of the binding machine 1 according to this embodiment will be described. As shown in Figures 2 to 5, the tying machine 1 arranges the resin sheet 2 fed out by the feed roller 7 in a roughly circular shape by moving along the movement trajectory K between the outer roller group 3 and the inner roller group 5, so the user only needs to place the object to be tied P inside the ring of the inner roller group 5, after which the inner roller group 5 retracts and the feed roller 7 pulls back the resin sheet 2 so that it can automatically be wrapped around the object to be tied P, making it easy to use.

[0024] As shown in FIG. 4, the inner roller group 5 is composed of a pair of inner rollers 5a, 5a, which move separately in the front and rear directions (F direction and B direction), respectively, allowing for quicker retraction compared to when moving in only one direction (only F direction or B direction). The welding unit 25 welds the overlapped resin sheets 2 together using ultrasonic waves, which does not generate heat as compared to thermal welding, making it easy to handle. The guide plate 21 is provided inside the moving locus of the resin sheet 2 so that the resin sheet 2 moves further after making one revolution and overlaps the resin sheets 2, and when the resin sheet 2 starts to fasten the object P to be bound, the guide plate 21 retreats, so that the guide plate 21 does not get in the way of winding the resin sheet 2, and the presence of the guide plate 21 allows the resin sheets 2 to be smoothly overlapped when being sent out. The welding receiving plate 23 is provided inside the moving locus K of the resin sheet 2, so that when the welding unit 25 welds the overlapping resin sheets 2 that have gone around once, the object P to be bound is not adversely affected by the welding unit 25. In addition, the welding receiving plate 23 retreats after the welding work by the welding unit 25, so it does not get in the way of binding.

[0025] The binding machine 1 is provided with guides 31 for positioning the object P on the left and right sides when inserting the object P, making it easy to position the object P. As shown in Figure 1, the movement trajectory K is roughly rectangular in shape when viewed from the front, and has auxiliary rollers 3c that are driven to rotate on the rising side and upper side, so that the resin sheet 2 can move smoothly. The support member 29 for the object P and the guide 31 for the object to be bound are positioned at a position shifted in the front-to-rear direction from the position along the inside of the approximately ring-shaped resin sheet 2 (see Figure 9), so they do not interfere with the binding of the resin sheet 2.

[0026] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention. For example, the welding unit 25 is not limited to ultrasonic welding, and may be one that uses heat. The resin sheet 2 is not limited to a polyethylene sheet, but may be a sheet made of other resins such as propane or propylene. The number of pairs of outer rollers 3a, 3a and inner rollers 5a, 5a forming the outer roller group 3 and the inner roller group 5 may be 10, 20, etc., and the number of each pair of outer rollers 3a, 3a and inner rollers 5a, 5a may be any number and is not limited. The moving locus K of the resin sheet 2 may be ring-shaped, and is not limited to a square shape when viewed from the front, but may be a circle or a hexagon when viewed from the front, and the shape when viewed from the front is not limited. [Explanation of symbols]

[0027] 1 Binding machine 2 Resin sheet 3 Outer roller group 5 Inner roller group 7 Feed roller P Object to be bound K movement trajectory

Claims

[Claim 1] The roller assembly includes an outer roller group, an inner roller group, and a feed roller. The outer roller group is arranged in a substantially circular shape along the outer side of the moving path of the resin sheet, The inner roller group is arranged to be movable between a position along the inner side of the moving path of the resin sheet and a retreated position, The feed roller can feed the resin sheet toward the movement path and pull the resin sheet back from the movement path, This resin sheet binding machine uses a resin sheet, and wraps the resin sheet around the object to be bound by pulling back the resin sheet while retracting the inner roller group, with the object to be bound placed inside the resin sheet that has been formed into a roughly ring shape by feeding out the resin sheet.

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