CS236561B1 - Chucking head namely for making braided strings - Google Patents

Abstract

Clamping head especially for braids strings, especially for capturing and clamping strings cores in the production of strings for musical tool, consists of an inner part and holsters. The inner part of the clamping head is formed a cylindrical body in the center of which is coaxial a hole for mounting on the drive shaft is provided motor and a perpendicular opening for it positioning element, and clamping hook attached to the cylindrical body on which it is spring on. Clamping hook thickness corresponds to the smallest conical groove width. Clamping head sleeve that is threaded on the inner part of the clamping head is cylindrical shape and is formed on its perimeter a spacing groove for defining the movement of the locking element. All over the diameter the end face of the housing is conical groove that extends towards the outer face.

Description

BACKGROUND OF THE INVENTION The present invention relates to a chuck head, in particular for string cords, intended to engage and clamp a string core in the production of strings for musical instruments consisting of an inner part and a housing.

The prior art clamping head is constructed either as a mandrel around which the cord core is manually tied, or similarly to the drill clamping head, except that when the cord core is inserted and retracted, the rollers within the head are pressed together to clamp the cord core.

The disadvantage of this arrangement is the considerable loss of time required for binding or insertion of the core of the string into the head, as well as the spontaneous loosening of the head, as a result of which the tension of the string decreases. In addition to these disadvantages, these heads have a large diameter, considerable weight and inertia, all of which place greater demands on starting and braking the spinning system.

The above-mentioned disadvantages are overcome and the new method of clamping the core of the cord is solved by the present invention, which is characterized in that the inner part of the clamping head is formed by a cylindrical body. a position element and a clamping hook onto which the spring is slid.

The thickness of the clamping hook corresponds to the smallest width of the conical groove. The chucking head sleeve, which is threaded on the inner part of the chucking head, is cylindrical in shape and a circumferential groove is formed on its periphery to limit movement by the position locking element.

A conical groove is provided over the entire diameter of the end face of the housing and extends towards the outside of the end face. The realization of this new concept results in considerable material savings, since the end of the string core can be considerably shorter.

The core core handling is so easy and quick, so only this operation saves one third of the time required to produce the string, regardless of the pull quality, the low weight of the chuck, the low inertia and efficiency.

The clamping head is shown schematically in the accompanying drawing, in which Fig. 1 shows the inner part thereof, and Fig. 2 shows the housing of the clamping head. The clamping head consists of two parts - the inner part 1 and the sleeve 10.

The inner part 1 of the clamping head is formed by a cylindrical body 2, in the center of which a bore 3 for mounting on the drive motor shaft and a perpendicular bore 2 for the housing position locking element 2 is coaxially formed

Furthermore, the inner part 2 of the clamping head 2 is formed by a clamping hook mounted on a cylindrical body 2 onto which the spring 6 is slid. The thickness a of the clamping hook 2 corresponds to the smallest width b of the conical groove 1.

The clamping head housing 7, which is hollow cylindrical in shape, is threaded onto the inner part 2 of the clamping head. In limit positions, it is secured by a spacer groove by means of a position locking element, for example a screw, which is located in the opening 6 for the position locking element.

Along the entire diameter of the face 10 of the housing Ί. ³ and a conical groove 3 which extends toward the outer side face 10. Housing T_ insertion of the inner part 2, the compression of the spring ejects j5 conical groove .8 .5 clamping hook, into which the collected core strings.

When the spring 6 is released, the sleeve 8 returns to its original position, thus gripping the zicon groove 8 and the clamping hook 2. The conical groove extends off the center of the cord core so that the cord core is centered in the clamping head. vibrations.

Claims (2)

Clamping head, in particular for string cords, comprising an inner part and a housing, characterized in that the inner part (1) of the clamping head is formed by a cylindrical body (2), in the center of which a hole (3) and a perpendicular aperture (4) for the securing element and a clamping hook (5) mounted on a cylindrical body (2) onto which the spring (6) is slid, the thickness (a) of the clamping hook (5) corresponding to the smallest width (b) of the tapered groove (8), wherein the chuck (7) of the chuck, which is threaded on the inner part (1) of the chuck, is hollow cylindrical and has a circumferential groove (9) on its periphery to restrict movement by the locking element A conical groove (8) extends over the entire diameter of the face (10) of the housing (7) and extends towards the outside of the face (10). Clamping head according to claim 1, characterized in that the spring (6) is located outside the clamping head.