ES1059188U - Hot stamping machine. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

"hot stamping machine" of the type constituted by a reception and heating section of the raw material, a cutting section and a stamping section properly characterized essentially because in the stamping section there is a die holder in which locates a body of the matrix, and a closing device operated by a mechanism of hydraulic rods and pistons in which the second body of the matrix is located, which incorporates three hydraulically operated stamping punches located in a horizontal plane located one in the in front of the machine, another in the rear area and a third on the opposite side to where the reception and heating section is located, which will be in charge of hitting the piece of hot brass to give it its final shape. (Machine-translation by Google Translate, not legally binding)

Description

Hot stamping machine.

Description of the invention

The object of the present invention as it is expressed in the statement of this specification consists of a hot stamping machine for manufacturing parts Small brass, tubular type "T" or "L", of those used in taps and other applications related.

These pieces are manufactured by stamping in hot brass, a technique in which the creep of the material It is limited to the cavity of the stamp. The material is placed between two matrices that have holes engraved in the shape of the piece you want to get. The metal completely fills the gaps of the stamp by means of blows or pressure using hammers or presses The stamping process ends when the two matrices They get practically in touch.

To date, a machine capable of automatically make brass configuration parts corresponding straight tubular with utility model no 200402750. However, said machine is not capable of making parts in "T" or "L" very common in screaming because they configure all types of splicing elbows and junctions or shunts of three ducts

In order to be able to make this type of pieces With the production advantages of the manufacturing machine of straight tubular parts, it has been developed the New hot stamping of brass parts.

This machine consists of three sections basic: the first is a reception and heating section of The raw material: brass bars; the second is a section of cut and the third is a stamping section proper. Of these three sections, the first two correspond basically to the scheme of the previous machine, the stamping section being where the novelty and inventive activity regarding the state resides of the applicable technique.

The stamping section of the new machine It consists of the following elements. A protamatrices in which it locates a body of the matrix, in whose interior the piece is deposited of brass that has to be stamped. A closing device actuated by a mechanism of connecting rods and hydraulic pistons, type used in plastic injection machines, in which Locate the second body of the matrix. A grease spray element Graphite inside the stamping mold. Three punches of  hydraulically operated stamping located on a plane horizontal located one in the front of the machine, another in the area posterior and a third on the side opposite to where it is located the reception and heating section, will be the responsible for hitting the piece of hot brass to give it its definitive form in "T" when the three punches act and in "L" when only two act (it should be understood that in each case the appropriate stamp will be used). An extractor element of the piece already stamped and finished, also hydraulically operated, It is located under the piece to be stamped. An air nozzle at pressure that deflects the extracted pieces to fall on a pipe that directs the finished parts to a container of collection of them. Finally, a cooling element by water, performs the proper cooling of the machine parts that require it, mainly with the finished pieces.

The operation of this device is the next:

When the piece of hot brass at 780 ° C arrives to the die body coming from the cutting section and transported by a robotic arm that it incorporates, the connecting rod mechanism that lowers the closure with the second body of the stamping matrix, whereby the matrix is closed to time that a spray of graphite grease permeates the inside of  the same. Then, the three punches of stamping that hit the piece of hot brass, which at being in a semi-plastic state flows filling every corner and interstices of the matrix, aided by the graphite grease that makes of high temperature lubricant; in this way the brass piece in "T" or "L". Then they withdraw the stamping punches and folds up the closure with the upper part of the matrix, leaving the piece in sight conformed Then the extractor element acts by hitting from below to the finished piece so that it leaves its position; is in that instant when a jet of pressurized air coming from the nozzle deflects the finished part towards the extraction channel that it finally flows into the container of finished parts. Is during the course of the piece through this channel, when refrigerates

Description of the drawings

In order to illustrate how much so far we have exposed, the present descriptive report of some drawing sheets corresponding to a schematic representation of the machine in which figure 1 corresponds to a perspective front, back figure 2, and side figure 3.

In these figures the totality has been represented of the machine in order to facilitate a better understanding of the general operation of this.

Description of a case study

In the new machine three sections are distinguished basic: the first is a reception and heating section of the raw material (large brass bars); the second is a cutting section and the third is a stamping section proper.

The reception and heating section has of a gas oven (1) open on one side, where a loading platform (2) with a slight inclination towards the machine, in which the operator deposits the brass bars (3) so that the bars roll towards the oven through gravity.

Just below the oven zone (1) where the brass bars (3) are deposited and throughout this It has a set of thermostated gas burners (4) with maximum pressure regulators set at 0.2 Kg / cm2 for maintain the most suitable temperature gradient for the processing of the bars (3).

On the oven (1) and all along it, a dragging device (5) of the bars (3) is installed, formed by a special and moved bearing Klein type guide by a pneumatic vane motor (7), to which a pusher (6) that is inserted into the oven cavity and that effect a longitudinal and rectilinear pulsatile displacement of the brass bar that is being processed influencing it by its rear end toward the cutting section.

The cutting section is attached to the front side of the oven communicating with this through a free passage and consists of an adjustable stop (9) constituted basically by a screw with a steering wheel on its head that It is located in front of the threshold of the passage between the oven and the cutting section, and of a shear (11) configured by a piston hydraulic (12) that incorporates a head at the end of the piston cutting that hits the stretch of hot rod that protrudes from the oven, tearing it off by shear. The piece or taco of cut bar is collected by a manipulator assembly formed by a pneumatic cylinder (13) associated with a transport arm (10) equipped with a 90º turning mechanism during displacement that transport it to the next section of the machine where it will be print.

The adjustable stop screw (9) is located threaded to a shear holder subframe (15) integral to the chassis of the machine.

The stamping section consists of a matrix holder (17) in which a matrix body is located (18) where deposit the hot brass plug to be stamped; a closing device (20) actuated by a connecting rod mechanism locking (21) and hydraulic pistons (22) in which another matrix holder plate with the second body of the die (23); three stamping punches hydraulically operated by cylinders press located in a horizontal plane located one in front of the machine (24), another in the back area (14) and a third (25) on the side opposite to where the section of reception and heating, which will hit the cue inside the matrix to give it its definitive form; an extractor (8) that makes leave the finished piece of the die; a pressure air nozzle not illustrated that deflects the extracted pieces towards a gutter of extraction (16) that directs the finished pieces to a container of collection of them (19). It is during the course of the piece for this gutter, when refrigerated.

The machine is completed with a hydraulic group and an electrical panel not illustrated that on the one hand will give pressure hydraulic to all cylinders mentioned above and by another will manage the entire electrical system.

Claims (1)

1. Hot stamping machine of the type consisting of a reception and heating section of the raw material, a cutting section and a stamping section proper characterized essentially because in the stamping section a protamatrix is arranged in which a body of the die, and a closing device driven by a mechanism of connecting rods and hydraulic pistons in which the second body of the die is located, which incorporates three hydraulically operated stamping punches located in a horizontal plane located one in front of the machine, another in the rear area and a third on the side opposite to where the reception and heating section is located that will be responsible for hitting the piece of hot brass to give it its final shape.