JPH0610102U - Winding cord storage structure for binding device - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the number of remaining cords is low, it is possible to effectively prevent the cords from becoming free-moving inside the cords and becoming entangled in a loop, resulting in string breakage due to the kink phenomenon. To be able to maintain such functions for a long time. [Structure] A knotting string 2 which is unwound and fed toward a knotting-type knotting mechanism is wound a large number of times, and is wound out of an end of a string on a winding inner side of a winding string 3 formed into a tubular shape. In a winding cord storage structure of a certain binding device, a spring wire 8 which is expandable and contractible toward the radially outer side which abuts at the inner peripheral surface of the winding cord 3 at a plurality of positions is provided, and by the spring force of the coil spring 15. The spring wire 8 is pressed and urged through a link mechanism R that is urged to expand outward in the radial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention has a structure in which a bundling cord that is fed and supplied toward a knotting-type knotting mechanism is wound a large number of times and is fed out outward from the end of the inner side of the winding of the winding cord that is formed into a tubular shape. The present invention relates to a winding string storage structure for a binding device.

[0002]

[Prior art]

 In the winding cord storage structure of the above binding device, conventionally, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2-135023, a cantilevered guide rod is provided inside the winding cord along the axis of the winding cord. There has been a configuration in which the tip portion of this guide rod is inserted into a cord guiding member on the cord feeding side and the cord is fed from between the two.

[0003]

[Problems to be solved by the device]

 In the above conventional structure, when the cord is unwound and fed to the knotting mechanism at high speed, the coiled coil is excessively unwound into the free-moving state due to the inertia of the string inside the winding string. The tendency to entangle in a loop inside the string is solved by winding it around the outer peripheral surface of the guide rod, and at the place where it is entangled in a loop with the high-speed feeding at the next binding operation. This is to prevent the so-called kink phenomenon from occurring and the string breakage to occur. However, even in the above-mentioned conventional structure, since there is a space between the guide rod and the inner circumferential surface of the winding cord, it is impossible to completely prevent the excessive feeding due to the inertia of the cord during the feeding operation as described above. It was difficult and the strings could become free-moving and entangled in a loop, which could not keep the frequency of string breaks low. In particular, the above-mentioned entanglement of the string is likely to occur frequently when the inner diameter of the winding string increases as the string is consumed. An object of the present invention is to solve the above problems and to suppress the occurrence of string breakage due to a kink phenomenon when the string is excessively extended regardless of the consumption of the string.

[0004]

[Means for Solving the Problems]

 According to a characteristic configuration of the present invention, in the winding cord storage structure of the binding device described at the beginning, a spring wire material that is expandable and contractible toward the outer side in the radial direction that abuts the inner peripheral surface of the winding cord at a plurality of positions. At the same time, the spring wire is pressed and urged via a link mechanism that is urged to expand radially outward by the spring force of the coil spring.

[0005]

[Action]

 Since the inner peripheral surface of the winding cord is urged outward in the radial direction by the spring wire disposed on the inner side of the winding cord, even when the cord is unwound, the cord is wound in a coiled state. The payout cord is always pressed by the spring wire near the position where it is pulled out, and it is forcibly prevented from being excessively paid out in a free-moving state for more than a predetermined amount, so that the cord does not become entangled in a loop. It is also possible to effectively prevent string breakage due to the kink phenomenon. Moreover, since the spring wire is merely elastically pressed, the cord can be easily pulled out during the binding operation. In addition, even if the inner diameter of the winding wire increases with the consumption of the cord, the spring wire expands not only by the elastic restoring force of the spring wire itself, but also by the coil spring with excellent durability of the elastic restoring force through the link mechanism. Since the structure is biased by the diameter, it can be used many times regardless of the change in diameter compared with the case where only the bending elastic restoring action of the spring wire itself is used, and the smooth pressing function can be maintained for a long time. .

[0006]

[Effect of device]

 Therefore, with a simple structure, it is possible to effectively prevent the cord from being excessively extended into a free-moving state and entangled in a loop in the inside of the winding cord due to the binding operation, and the winding cord is consumed as the cord is consumed. Even if the inner diameter expands and changes, the effect of preventing the string from being excessively extended by the spring wire can be maintained, and the kink phenomenon occurs inside the winding string even when the inner diameter of the winding string becomes large due to the shortage of the remaining winding string. As a result, it is possible to surely suppress the occurrence of string breakage, and to provide a product that can maintain such a string break prevention function for a long period of time.

[0007]

【Example】

 Embodiments will be described below with reference to the drawings. FIG. 4 shows the discharge straw bundling device mounted on the combine. This bundling device is configured to feed a bundling string 2 toward a knotting structure type knotting mechanism 1 having a well-known structure, bund the discharged straws and discharge them to the outside of the machine. The bundling cord 2 is configured so as to be sequentially fed out from a winding cord 3 wound a large number of times in a roll shape, and the winding cord 3 is configured to be housed and supported in a support case 5 attached to a machine body frame 4. Then, the cord 2 is inserted through the cord feeding port 6 of the support case 5 from the inner end of the winding cord 3 and then is prevented from being excessively fed out of the case by the high-speed cord feeding operation by the knot mechanism 1. It is configured to be supplied to the knot mechanism 1 via a friction type string brake 7. Next, the structure of the cord storage unit will be described. As shown in FIG. 1 and FIG. 2, the winding cord 3 is formed into a tubular shape by winding the cord 2 in a layered manner in a coil shape a number of times. Also, the panel wire member 8 that presses and urges the inner circumferential surface outward in the radial direction is cantilevered to the disk-shaped support member 9 provided outside on the opposite side of the string feeding port 6. It is arranged in a supported state. Both ends 8a of the spring wire 8 on the base end side are configured so as to be inserted through the elongated holes 10 formed in the support member 9 in the radial direction so as to be bent and molded so as not to come off. Further, a plate-like restricting tool 11 is attached to the surface of the supporting member 9 on the side opposite to the winding string 3 to prevent and restrict the base end side of the spring wire 8 from protruding significantly outward. An elastic material 12 [sponge member] is attached to the plate-shaped restricting member 11 to act on the side surface of the support case 5 and prevent the winding string 3 from being displaced. Then, as shown in FIG. 3, a pair of notches 14 extending in the radial direction is formed in a synthetic resin packaging sheet 13 covering the winding cord 3 on the side surface of the winding cord 3 on the side where the supporting member 9 is disposed. As the inner diameter of the winding cord 3 increases and the diameter of the winding cord 3 increases with the consumption of 2, the both end portions 8a of the spring wire 8 are allowed to move radially outward. Further, the spring wire 8 is pressed and urged outward in the radial direction through a link mechanism R that is urged to expand outward in the radial direction by the spring force of the coil spring 15. . More specifically, a supporting shaft 16 is fixedly extended in a cantilever manner at the center position of the winding string 3 of the supporting member 9, and a midway portion between the boss member 17 and the spring wire 8 which are slidably fitted on the supporting shaft 16. A pair of first rods 18 are pivotally connected to each other over the [intermediate position in the axial direction of the winding cord], and a boss member 19 slidably fitted to the support shaft 16 on the support member 9 side than this. And a middle portion of each of the first rods 18 are pivotally supported by a pair of second rods 20, and a coil spring 15 that biases the boss members 17 and 19 in a direction to separate them is supported by the support shaft 16 It is wound around. According to this structure, the pivotal connection points P1 and P2 between the first rods 18 and the spring wire rod 8 can be expanded and contracted in the radial direction, and can be expanded radially outward by the spring force of the coil spring 15. Will be urged. According to the above configuration, even if the inner diameter of the winding cord 3 is expanded and changed due to consumption of the cord 2, when the cord 2 is unwound due to the binding operation, the cord 2 is wound inside the winding cord 3 in a coil shape. It is possible to prevent the loops from being entangled with each other by forcibly preventing the state from being collapsed into a free-moving state due to excessive extension by elastic pressing.

It should be noted that although reference numerals are added to the claims of the utility model for easy comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a cord storage portion.

FIG. 2 is a cross-sectional view of a cord storage portion.

FIG. 3 is an exploded perspective view of a cord storage portion.

FIG. 4 is a rear view of the binding device.

[Explanation of symbols]

 1 Knot mechanism 3 Winding string 8 Spring wire 15 Coil spring R Link mechanism

Claims (1)

[Scope of utility model registration request] 1. A cord end portion on the inner side of a winding of a winding cord (3) which is formed by winding a plurality of binding cords (2) which are fed out toward a knotting mechanism (1) of the knotter bill system and which is formed into a tubular shape. A winding string storage structure of a binding device configured to be extended outward from a spring, the spring being expandable and contractable toward an outer side in a radial direction that abuts an inner peripheral surface of the winding string (3) at a plurality of points. A wire rod (8) is provided, and the spring wire rod (8) is pressed and urged via a link mechanism (R) that is urged to expand radially outward by a spring force of a coil spring (15). A winding string storage structure for the binding device.