JPH04112005U - Band guide in binding machine - Google Patents

Abstract

(57) [Summary] [Purpose] To smoothly supply a band and wrap the band around an object with a simple structure without moving parts. [Structure] A loop-shaped band guide 1 consisting of a straight portion S and a curved corner portion can be fixed inside a guide frame body erected in an arch shape from both sides of a binding table, An opening 5 is formed on the inner circumferential side by the outer circumferential wall 2, each side wall 3 continuous to both sides of the outer circumferential wall 2, and each lip-shaped inner circumferential wall 3 on the inner circumferential side of each side wall 3. A guide body is formed on the outer peripheral wall 2 of the straight portion S to push out the center portion of the band B toward the opening 5 side so that the band B can maintain an arcuate cross section. 6 is provided.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is used in packaging equipment, etc., and is especially applicable to band guards in binding machines. It is about id.

0002

[Conventional technology]

Objects that have been wrapped in film using a wrapping machine are usually wrapped in a wrapping machine in the next process. It is bound with do.

0003 This binding machine is provided with various structures, but for example, a band In some cases, the id is held by a tension spring.

0004 That is, an arch-shaped guide frame is erected from both sides of the binding table, and this guide The loop-shaped band guide housed inside the frame is pulled toward the guide frame by a tension spring. By being pulled together, the opening, which has a U-shaped cross section, is always closed and the band passage is kept closed. is forming.

[0005] On the other hand, a band supply mechanism and a heat welding cutting mechanism are installed at the lower center of the binding table. Both ends of the band guide are connected to both sides of this heat-welded cutting mechanism. Ru.

[0006] When the items to be bound are carried onto the binding table, they are fed by the band feeding mechanism. The inserted band runs inside the band guide and passes above the heat weld cutting mechanism. When the tip is held by suitable means, the band is connected to the band supply mechanism. Due to the pullback action of the band pullback mechanism, the band is pulled back with a force stronger than the biasing force of the tension spring. By pushing open the opening of the guide and slipping out, the objects to be bound on the binding table can be removed. can be tightly wrapped around.

[0007] The band wrapped around the object in this way is cut by a heat welding cutting mechanism. The bonded parts were thermally welded and the parts where the band was not needed were cut.

[0008] In addition, the band guide holding structure uses a cam mechanism, an opening/closing mechanism, and The band guide is brought into contact with the guide frame by the opening/closing means consisting of a arm and an actuating piece. There are also those that can be touched and opened (for example, see Japanese Patent Application Laid-Open No. 2-233314). Are known.

[0009]

[Problem that the idea aims to solve]

However, among the band guides mentioned above, the former can quickly open and close the band guide. In order to do this, the band guide is held on the guide frame by a number of tension springs. It is necessary to Therefore, the internal structure of the guide frame becomes complicated, resulting in a high failure rate. However, there were disadvantages such as a decrease in the reliability of the binding machine.

0010 In addition, the latter requires a driving source for the opening means, which not only increases equipment costs, but also The guide has a light and slender structure because it is required to operate at extremely high speeds. Therefore, there was a problem in that the operating rate of the binding machine was hindered due to damage or the like.

[0011] Considering these conventional circumstances, this idea was designed with a simple structure without moving parts. We offer band guides for strapping machines that can improve equipment costs and equipment reliability. The purpose is to provide

0012

[Means to solve the problem]

The band guide in the binding machine of this invention has an arched shape from both sides of the binding table. A loop-shaped band consisting of a straight part and a curved corner is installed inside the upright guide frame. It is designed so that the guide can be fixed, An outer peripheral wall, each side wall connected to both sides of this outer peripheral wall, and an inner peripheral side of each side wall. A groove with a lip having an opening on the inner peripheral side is formed by each lip-shaped inner wall body connected to the The band is formed into a shaped cross section, and the outer circumferential wall of the straight section has a shape that pushes the center part of the band toward the opening side. A guide body is provided to allow the band to maintain its arcuate cross-section when extended. It is something that

[0013]

[Effect]

When the band guide is fed inside the band guide, this band In the straight part of the guide, the two inner circumferential walls and the guide body in the center form an arcuate shape. While traveling and being guided by the inner peripheral surface of the outer peripheral wall at the curved corner, By repeating the running motion alternately, smooth band supply is achieved. Ru.

[0014] On the other hand, when the band reaches the end of the band guide and is pulled back, This band easily slips out of the opening in the band guide, so it does not attach to the object being bound. The winding process progresses smoothly.

[0015]

【Example】

An embodiment of this invention will be described below with reference to the drawings.

[0016] The band guide 1 whose cross-sectional shape is shown in FIGS. It is applied to 51.

[0017] That is, the band guide 1 is erected in an arch shape from both sides of the binding table 52. There is a bracket or a connecting piece (both not shown) inside the guide frame 53. From four straight parts S and four curved corners C so that it can be fixed with an appropriate fixing means. It is formed into a loop shape.

[0018] As shown in FIGS. 1 to 5, the band guide 1 includes an outer peripheral wall 2 and an outer peripheral wall 2. Each side wall body 3 is connected to both sides of the body 2, and a lip-shaped part is connected to the inner circumferential side of each side wall body 3. Each inner circumferential wall body 4 forms an integral lipped groove having an opening 5 on the inner circumferential side. It is formed in cross section.

[0019] Furthermore, on the outer peripheral wall 2 of the straight portion S (see FIGS. 1 to 4), the center of the band B is The band B was pushed out toward the opening 5 side so that the band B could maintain its arcuate cross-section. A guide body 6 is provided.

[0020] This guide body 6 is a protrusion or an intermittent protrusion, and It is formed into a guide slope (not shown) whose height at both ends becomes lower toward the outer peripheral wall 2. It is.

[0021] On the other hand, the curved corner C of the band guide 1 is as shown in FIG. Since the band B running inside is guided by the inner circumferential surface of the outer circumferential wall body 2 and curved, There is no risk of it slipping out of the opening 5, so the guide body 6 is not provided. .

[0022] Note that the height H of the guide body 6 is determined by the overlap between both ends of the band B and each inner circumferential wall 4. The width L is formed to be the minimum size that can maintain the running movement of the band B. Ru.

[0023] A feed row for supplying bands is provided at the lower center of the binding table 52 of the binding machine 51. A heat weld cutting mechanism 55 is provided on both sides of the heat weld cutting mechanism 55. Both ends of the band guide 1 are connected. 56 is a band pool box, 5 7 is a band reel, and this band reel 57 has the band reel 57 reversed. A band pull-back mechanism (not shown) for rotating the band is connected.

[0024] Next, the operation of the above embodiment will be explained.

[0025] In FIG. 6, when the objects W to be bound are carried onto the binding table 52, the feeder The band B stored in the band pool box 56 by the controller 54 is It is fed into the straight section S of the guide 1.

[0026] This band B is formed by the two inner walls 4 of the band guide and the guide body 6 in the center. It moves in an arcuate manner and is guided by the inner circumferential surface of the outer circumferential wall 2 at the curved corner C. The motion of traveling while curving is repeated alternately. At this time, band B is Since it can maintain an arched state at the line part S, it does not bend or slip out from the opening 5. There is no risk of damage and the product is supplied normally.

[0027] After that, the band B passes above the heat welding cutting mechanism 55 and the tip part is cut by an appropriate means. When the band B is held in the By being strongly pulled back by the reverse movement of the band reel 57, the band guide 1 is The internal band B slips out of the opening 5 and attaches to the object W on the binding table 52. Can be wrapped tightly.

[0028] In this way, the band B wrapped around the object W to be bound is connected to the thermal welding cutting mechanism 55. Therefore, heat welding treatment is applied to the band joining portions and cutting treatment is performed to the unnecessary portions of the band. .

[0029]

[Effect of the idea]

The band guide in the binding machine of this invention has an arched shape from both sides of the binding table. A loop-shaped band consisting of a straight part and a curved corner is installed inside the upright guide frame. It is designed so that the guide can be fixed, An outer peripheral wall, each side wall connected to both sides of this outer peripheral wall, and an inner peripheral side of each side wall. A groove with a lip having an opening on the inner peripheral side is formed by each lip-shaped inner wall body connected to the The band is formed into a shaped cross section, and the outer circumferential wall of the straight section has a shape that pushes the center part of the band toward the opening side. A guide body is provided to allow the band to maintain its arcuate cross-section when extended. Since the band is fed into the band guide, the band The guide body maintains an arched shape in the straight part of the pipe, causing bending or falling out of the opening. At the curved corner, it is guided by the inner peripheral surface of the outer peripheral wall and curved. Since the vehicle can travel while turning, smooth band supply is achieved.

[0030] Furthermore, the opening of the band guide can be moved forward and backward relative to the guide frame, etc., as in the conventional method. It has an extremely simple structure that requires no moving parts or drive mechanisms for Not only does it save a lot of money, but it also improves equipment reliability because it never breaks down. There are many great benefits of improving.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a straight portion of a band guide taken along line II in FIG. 6;

FIG. 2 is a sectional view of a straight portion of the band guide taken along line II-II in FIG. 6;

FIG. 3 is a sectional view of a straight portion of the band guide taken along line III-III in FIG. 6;

FIG. 4 is a sectional view of a straight portion of the band guide taken along line IV-IV in FIG. 6;

FIG. 5 is a cross-sectional view of the band guide at each curved corner of FIG. 6;

FIG. 6 is a front view showing the main parts of the binding machine.

[Explanation of symbols]

1 Band guide 2 Outer peripheral wall 3 Side wall body 4 Inner peripheral wall 5 Opening 6 Guide body 51 Binding machine 52 Binding table 53 Guide frame body B band S Straight section C Curved corner

Claims (1)

[Scope of utility model registration request] Claim 1: A loop-shaped band guide consisting of a straight part and a curved corner part can be fixed inside a guide frame which stands upright in an arch shape from both sides of a binding table, The band guide is formed by an outer peripheral wall, each side wall connected to both sides of the outer peripheral wall, and each lip-shaped inner wall connected to the inner peripheral side of each side wall. The band is formed to have a groove-shaped cross section, and the outer circumferential wall of the straight portion is provided with a guide body that pushes out the center portion of the band toward the opening side so that the band maintains the state of the arcuate cross section. A band guide in a characteristic binding machine.