SU137618A1 - Machine for making round straps for wrist watches - Google Patents

Description

The proposed machine for forming round straps for wristwatches is new and useful, as it increases the mechanization of production and improves the quality of manufactured products.

 The machine is made in the form of two continuously vrah, ayush, their and interacting, their part of the end surface of the forming discs, fixedly mounted on the shafts, the planes of which are angled, the devices for sizing the wrapped cord, the knife for removing the excess shell along the seam, dyeing the seam of the shell and the device for transferring the strap formed in the discs for subsequent operations.

There is an annular groove on the end surface of the forming discs to form the strap, and on the outer surface of one of the discs there is a groove for converting the strap formed in the discs to subsequent operations.

The device for painting the seam of the shell consists of a bath for paint, a roller, partially immersed in paint, used for applying paint, rollers that guide the cord, and a soft pad for removing excess paint. A device for converting a strap formed in the discs into subsequent operations consists of pull-out guide rollers, the axes of which are arranged at an angle to the axis of rotation of the forming discs.

FIG. 1 shows a kinematic scheme of masks; in fig. 2- - the location of the gutter and grooves on the disks; in fig. 3-schematic representation of the maschine mechanism.

The proposed machine consists of two disks 1 and 2, the planes of which between them form an angle of 1 °, the end edges of the disks touch each other on one side, and on the opposite side form a sip about mm in size for free exit after molding. Ring gutter 3 located on the end surface

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forming discs, used to form the strap. Viewing groove 4 on the outer surface of the disk 1 is used to view the quality of the strap.

The disks J and 2, having about 3 rpm, are fixed on the shafts 5 and 6, respectively, the latter receives rotation from the electric motor 7 through the belt drive 8, the gearbox 9 and the gear wheel JO. The disk 2 is pivotally connected with the disk 1 by two rings //. In the gap between the disks placed roller J2, mounted on a rack 13, mounted on a suspension J4. There are pull-out guide rollers J6 and 17 to transfer the molded / 5 disc to the viewing groove 4, which serves to view the machining quality. The first one is located against the groove, the second is against the throat.

To fit the strap to the coloration, there are rollers 18 and 19 with profile grooves a forming, corresponding to the profile of the strap. The strap, exit from the forming discs / and 5, falls into the groove of the roller 19 by cutting inwards, from where the strap passes into the groove of the roller J8, but already by cutting to the outside, which ensures the necessary position of the strap for applying paint on it.

The tool for painting the sheath of the shell consists of a rubber roller 20 freely rotating on an axis fixedly mounted on the bracket 21. The roller is partially immersed in the paint in the bath 22 attached by the holder 23 to the bracket. When the roller is moved, its cut is in contact with the end surface of the roller, as a result of which the roller rotates and coats the displacements with paint.

To remove excess paint and grind the strap cut-off, there is a paint remover consisting of a stand 24 attached by a screw 25 to the bracket 21. A felt pad 26 is placed on the stand, held by the clamps 27. The leading rollers 28 and 29 driven serve as a conveyor. The driven roller 29 receives rotation through a rubber roller 30. A knife 31 fixed in 32 is used to cut the sheath along the seam of the belt, which, in turn, is attached to the suspension 14. The cord from the roller 12 enters the guide 33 located in the hatch 34, and further along the guide rollers 35, 36, 37 and 38 passes through the tank 39 with rubber glue, which gets from the coil 40 located on the axis 41 of the bracket.

To dry the strap, glued with rubber glue, serves as a fan 42.

A brief list of machine operations is as follows: the end of a strip of leather, lubricated with rubber glue, is fed to the roller 12, the machine is turned on. The discs 1 2 during its rotation move the cord 43, and with it the strip of leather. A cord with a strip of leather is installed, one hour into the pharynx of the discs, which, coming together, compress the skin around the cord and bring the product to the knife, then to the dye roller, the transfer guide, and through the viewing groove to the roller conveyor.

Subject invention

Claims (4)

1. A machine for forming round straps to a wrist watch, characterized in that, in order to increase the mechanization of production and improve the quality of manufactured products, it is made in the form of two continuously rotating and interacting with a part of the end surface of the forming disks, which are planted on shafts, whose rotation axes angled, sizing devices for the wrapped sheath, a knife to remove excess sheath along the seam, tools for dyeing the seam of the sheath, and tools for translating are molded th in the discs of the strap on the subsequent operations. 2. The machine according to claim 1, characterized in that the forming disks on the end surface have an annular groove for forming the strap, and one of the disks also has an annular groove on the outer surface for converting the strap formed in the disks to subsequent operations. 3. The machine according to claim 1, characterized in that the device for dyeing the seam of the sheath is made in the form of a paint bath, partially immersed in a paint roller, a roller, a cable guiding cord and a soft pad for removing excess paint. 4. The machine according to claim 1, which is related to the fact that the device for transferring the strap formed in the discs to subsequent operations is made in the form of extension guide rollers, the axes of which are angled to the axis of rotation of the forming discs. J 2 6 W 7