RU85396U1 - POWDER CUTTING DEVICE - Google Patents

Abstract

A device for measuring cutting of powder cords of small diameters (from 1 to 8 mm), comprising a node for supplying cords to the cutting zone, a cutting unit with knife elements in the form of flat knives mounted with the possibility of reciprocating motion from the pneumatic drive, and a control system, characterized in that the cord feeding unit is made in the form of an inclined matrix with slots for knife entry, the cutting unit with knife elements is made in the form of a series of flat removable knives having the shape of an isosceles triangle without a base, mounted on the drive in Alu with the ability to control the distance between them, in addition, contains a protective screen interlocked with the launch system.

Description

The utility model relates to the machining of products from a powder mass and can be used when cutting rod and tubular cords from other polymeric materials to a given length.

It is known "Device for cutting rod and tubular products" according to patent No. 2094226 of the Russian Federation C1, cl. 6 B29B 11/02, 1997, ed. Falaleev N.I., Chernyshova S.V.

The device relates to the field of machining of polymeric materials, and can be used to obtain rod and tubular products in size by cutting.

The device comprises a unit for supplying the workpiece to the cutting zone through a vertical guide, a cutting unit with a knife element, an emphasis for adjusting the length of the cut product and a control system that synchronizes the retraction-supply of the emphasis with the knife stroke.

The disadvantage of this device is the low productivity - cutting only one cord, while for products (different diameters) you need to readjust and replace the larvae and guides.

Closest to the claimed technical solution and used as a prototype is the "Device for measuring cutting of rod and tubular products from polymeric materials" according to patent No. 2173632 of the Russian Federation C1, cl. 7 В26D 3/16, В29В 11/02, ed. Alikin V.N., Golubtsov L.I., Kuzmitsky G.E.

The device comprises a unit for supplying the workpiece to the cutting zone, a guide, a cutting unit with a knife element in the form of a flat knife, mounted with the possibility of reciprocating movement from the pneumatic actuator, a device for regulating the length of the cut product, a control system. The guide prism has a lateral stop, mounted on the base and serves as a support for the product supplied to the cutting zone, while the knife element containing the housing with guide columns is installed in the guide bushings of the movable frame perpendicular to the direction of its movement from the pneumatic drive and is equipped with an additional pneumatic drive moving the case with a knife and guide columns perpendicular to the direction of movement of the frame.

The disadvantage of the prototype is the low productivity when cutting cords of small diameters due to the supply of one tube (cord) for cutting, the bulkiness of the structure: the design has two drives.

The objective of the proposed utility model is high-quality safe cutting of several cords with several knives at the same time, with the ability to control the length of the cut products by changing the distance between the knives, which significantly increases productivity.

To solve this problem, a device for simultaneous dimensional cutting of several powder cords into short elements is proposed.

In a device for measuring cutting of powder cords of small diameters (from 1 mm to 8 mm), comprising a unit for supplying cords to the cutting zone, a cutting unit with knife elements in the form of flat knives mounted with the possibility of reciprocating motion from the pneumatic drive, and a control system, the cord feeding unit is made in the form of an inclined matrix with slots for the entry of knives, the cutting unit with knife elements is made in the form of a series of flat removable knives having the shape of an isosceles triangle without a base, mounted on the drive shaft with the possibility of ü regulation of the distance between them, in addition, the device contains a protective screen interlocked with the launch system.

Figure 1 shows a front view of the proposed device.

All components of the device are mounted on a frame 1, which is a metal structure.

The feed unit of the rod and tubular products consists of a matrix 2, which is a table of complex design, resting on the base 3 of the frame 1, an emphasis 9, connected with the pedal 10, preventing the product 14 from rolling off the matrix before cutting. For the convenience of laying products in one row (layer) and removing elements after cutting, part of the table of the matrix 2 is made inclined and has slots for a number of flat knives 4, the horizontal part of the table plays the role of a cord storage device on which the control system is installed (switch 13).

The cutting unit consists of several knife elements 4, the cutting edge of which is made in the form of a flat knife. To reduce the effort when cutting, the cutting edge of the knives 4 is made not straight, but in the form of a gable roof or an isosceles triangle without a base, the knives are mounted on levers 5 located rigidly on a common shaft 6. Shaft 6 is mounted on frame 1 and receives a swinging movement from the lever 7, connected with the cylinder rod 8. The profile of the cutting edge of the knives 4 secures the bunch of products on the matrix 2 before cutting and exerts simultaneous pressure on the products from two sides, which allows to reduce the force during cutting, thereby improving the quality of the cut.

To ensure safety, the control panel provides for the inclusion of the stroke only after setting the screen 12 in the working position. The gap between the fence 11 and the matrix 2 exceeds the diameter of the product by 1 ... 2 mm, which provides protection for the hands when laying the cords. The screen 12 is blocked by the control system (pneumatic switch 13), protecting the operator from the consequences of a flash (ignition) of products.

Cord cutting is performed by the simultaneous movement of the knife elements towards the center of the product.

The device operates as follows.

Cords with a diameter of up to 8.0 mm of a certain length are laid on the storage table of the matrix 2, then on the inclined part of the matrix 2 in one layer close to each other until they stop 9. Then the protective screen 12, which removes the lock, is lowered. Using the starting device (switch 13), the pneumatic actuator 8 is turned on, the shaft 6 is turned with knives 4, the cords are cut into elements of a certain length.

The emphasis 9 after cutting the product is buried by pressing the pedal 10, freeing up the path for rolling the cut elements into the container.

Adjusting the length of the cut products is carried out by installing between the knives measuring bushings.

Due to the fact that the shape of the knives is made in the form of an isosceles triangle without a base, the cutting force decreases and the quality of the cord cut is improved.

Claims (1)

A device for measuring cutting of powder cords of small diameters (from 1 to 8 mm), comprising a node for supplying cords to the cutting zone, a cutting unit with knife elements in the form of flat knives mounted with the possibility of reciprocating motion from the pneumatic drive, and a control system, characterized in that the cord feeding unit is made in the form of an inclined matrix with slots for the entry of knives, the cutting unit with knife elements is made in the form of a series of flat removable knives having the shape of an isosceles triangle without a base, mounted on the drive in Alu with the ability to control the distance between them, in addition, contains a protective screen interlocked with the launch system.