RU215232U1 - DEVICE FOR AUTOMATIC MANUFACTURING OF LONG SPRINGS - Google Patents

Abstract

The utility model relates to the field of wire spring production, in particular to the field of automatic production of long springs.

The technical result achieved by the solution is to improve the manufacturing accuracy of the spring.

The specified technical result is achieved due to the fact that a device for the automatic production of long springs has been developed, containing:

- a housing in which, by means of assembly operations, the elements of the device are fixed so as to perform their prescribed functions;

- an element for moving the wire from the storage, made with the ability to direct the wire into the winding element;

- a winding element configured to wind a spring from wire, the winding element being a spindle with equipment installed on it for winding a spring with a given diameter and pitch;

- a cutting element configured to cut the spring from the wire after winding is completed;

characterized in that it additionally contains

a triangular chute attached to the body under the axis of the spindle at an angle downwards and configured to receive a spring coming out of the spindle and guide it along its longitudinal axis, the first side of the chute being hinged to the second side of the chute and being rotatable by a drive;

a spring detection sensor mounted at a spindle distal end of the triangular groove at a predetermined distance from the spindle, configured to detect a spring emerging from the spindle;

moreover, the sensor is configured to apply a stop signal to the coiling element upon detecting pressure from the spring exiting the spindle, to the chopping element for chopping off the spring, to the actuator for issuing the spring.

Description

Field of technology to which the utility model belongs

The utility model relates to the field of wire spring production, in particular to the field of automatic production of long springs.

State of the art

An automatic spring making machine is known (GB2245850A, published 1990-08-29). The known machine has a plurality of forming tools reciprocating into a plurality of corresponding guide tools radially disposed on the machine panel with respect to a central spindle through which the spring wire is fed for automatic forming by the tools into springs of various shapes or orientations as required. The operation of the machine is controlled by a microprocessor, as well as an auxiliary pneumatic controller for calibrating the length and orientation of the springs during their manufacture using a feeler gauge and a guide bar, respectively. The reciprocating motion of the tool is carried out by respective cams and cranks forming a radial set of gears driven by a variable speed motor controlled by a microprocessor.

However, this solution uses a completely different design to control the length of the spring.

Known as a prototype machine for automatic production of springs (CN109396303A, publ. 2019-03-01). The known machine contains a transport mechanism, which includes an active unwinding plate for unwinding the wire, a moving roller and a horizontal gearbox, the active unwinding plate is driven by a motor, the motor is located in a horizontal gear box, the output of the unwinding wire of the active unwinding plate is equipped with a counting wheel for determining the length unwinding wire.

However, this solution uses a completely different design to control the length of the spring, which leads to a decrease in the accuracy of the length of the resulting spring.

Utility Model Disclosure

In one aspect of the utility model, an apparatus for automatically manufacturing long springs is disclosed, comprising:

- a housing in which, by means of assembly operations, the elements of the device are fixed so as to perform their prescribed functions;

- an element for moving the wire from the storage, made with the ability to direct the wire into the winding element;

- a winding element configured to wind a spring from wire, the winding element being a spindle with equipment installed on it for winding a spring with a given diameter and pitch;

- a cutting element configured to cut the spring from the wire after winding is completed;

characterized in that it additionally contains

a triangular chute attached to the body under the axis of the spindle at an angle downwards and configured to receive a spring coming out of the spindle and guide it along its longitudinal axis, the first side of the chute being hinged to the second side of the chute and being rotatable by a drive;

a spring detection sensor mounted at a spindle distal end of the triangular groove at a predetermined distance from the spindle, configured to detect a spring emerging from the spindle;

moreover, the sensor is configured to provide a signal to complete the manufacture of the spring.

In additional aspects of the utility model, it is disclosed that it further comprises a guide channel attached to the triangular chute, configured to receive and guide the manufactured spring into the storage container; the guide channel is movable relative to the container for placing the manufactured springs in rows; the channel contains a means of braking the spring; the spring detection sensor is a self-returning button; the spring detection sensor is a pressure sensor; further comprising a temperature sensor and a spring detection sensor bias means, the temperature sensor being configured to control the bias means depending on the sensed spring temperature.

The main objective of the claimed utility model to be solved is the automatic production of springs of a given length.

The essence of the utility model lies in the fact that the spring, manufactured by the winding machine, falls into the groove, which prevents it from bending and directs it straight to the sensor located at a given distance from the machine spindle. After the sensor is triggered, the end of the spring is subjected to final processing (if necessary) and cut off.

The technical result achieved by the solution is to improve the manufacturing accuracy of the spring.

Brief description of the drawings

1 shows a block diagram of the claimed device.

Implementation of the utility model

A device for the automatic production of long springs is claimed, containing a housing in which or on which the necessary elements for the production of springs are installed. The standard device consists of drives, tooling, wire-drawing means (eg rollers and guides) that are made and installed through assembly operations at the factory so as to ensure the movement of the wire to the tool for winding the spring.

The claimed device additionally contains elements that are installed on the body in the field of equipment for winding the spring: a triangular chute, a drive, a sensor.

The block diagram of the claimed device is shown in figure 1, in which:

101 - body,

102 - winding element,

103 - gutter,

104 - sensor.

Spring winding element 102 is a spindle with equipment installed on it for winding a spring with a given diameter and pitch. This element 102 is configured to wind a wire spring. During winding, the wire is continuously fed to the winding element 102, which continuously produces it, increasing the length, which leads to the release of the spring from the tooling.

Tooling and spindle can be any standard, which does not apply to the essence of the proposed solution.

As the spring exits, it falls into the triangular groove 103, which ensures the straightness of its movement. Without the trough 103, the spring is subjected to bending and possibly inelastic deformation, which interferes with obtaining a quality product and measuring its length.

After winding is completed and the spring has reached the required length, the end of the spring is cut off from the wire using any suitable cutting element (scissors, guillotine, etc.). The beginning and end of the spring may contain fasteners, preferably made of the same wire, but using a different tooling. The length of the spring is usually determined by both the fasteners and the coiled part.

In the distal part of the trough 103, a sensor 104 is installed which detects the spring moving towards the sensor 104 and sends a signal to the winding element 102 to complete the winding.

The sensor 104 may be a video camera, an ultrasonic distance meter, a pressure sensor, an electromechanical button. When a spring is detected, the sensor 104 transmits a signal indicating that the spring has reached a predetermined length. The signal is transmitted via functional communication lines, preferably wired to the elements of the claimed device, which must change their work when the spring reaches a given length, in another embodiment, the signal from the sensor 104 is sent to the microcontroller, which in turn sequentially commands other elements of the device to change their work: stop wire feeding and winding of the spring, optionally perform finishing operations on the spring (form the desired shape at the end), cut the spring from the wire, move the spring to a storage container.

The sensor 104 is mounted at such a distance from the spindle to provide the required length of the spring, while the correction for the initial and final elements of the spring (rings, etc.) can be set.

The triangular chute 103 used in the solution is attached to the body under the spindle axis at an angle downwards and is configured to receive the spring coming out of the spindle and direct it along its longitudinal axis towards the sensor 104. In this case, the first side of the chute 103 is fixed on the second side of the chute 103 by means of a hinge and is made with the possibility of rotation by means of a drive. The second side itself is fixedly fixed on the body 101 of the claimed device. The rotation of the first side can be carried out under the action of gravity or under the action of the actuator at such an angle that the spring falls out of the chute 103. After the spring falls out, the actuator returns the first side to its original position.

After the spring has been transferred to the storage container, a new spring manufacturing cycle begins.

The operation of the proposed device

From the coil with spring wire, the end of the wire is installed in the element for moving the wire, this element pulls the wire to the spindle with equipment for making a spring with the required diameter. In the process of winding the spring, its length increases, and it moves along the chute towards the sensor. The chute provides a rectilinear movement of the spring, which increases the accuracy of measuring its length. When the end of the spring farthest from the spindle reaches the sensor, it sends a signal to stop winding and cut off the second end of the spring. After cutting off the spring, one wall of the trough is folded back and the spring rolls into the container, then the wall is lifted by the drive, the production cycle of the second spring begins.

Embodiment 1

In one embodiment, the channel 103 is connected to a rectangular channel, configured to receive the spring from the channel 103 and direct it to a predetermined location in the container. This solution improves the quality of spring storage, which are laid out in even rows. The channel has a height and width 2-4% greater than the diameter and length of the spring to ensure uniform movement of the spring to the storage location.

One embodiment includes a channel drive that moves it relative to the container to store the springs more tightly and compactly.

In one embodiment, the channel includes a spring deceleration means, such as a curtain, which allows the spring to exit the channel at a slow speed to increase compact storage reliability.

Embodiment 2

In one embodiment, the spring detection sensor 104 is a push button. When moving, the spring presses the button, this leads to the supply of a control signal to complete the spring production cycle.

In another embodiment, the spring detection sensor 104 is a pressure sensor that is activated when a spring moving against it is pressed.

Embodiment 3

In one embodiment, the claimed device further comprises a temperature sensor and a spring detection sensor biasing means (actuator), wherein the temperature sensor is configured to control the biasing means depending on the measured spring temperature. For long springs, thermal expansion and contraction can have a significant effect on the length of the spring being produced. A temperature sensor (preferably non-contact, as a contact sensor will give a high error when measuring the temperature of a moving spring) continuously measures the temperature of the spring or ambient air and transmits a corrective signal to the actuator or actuator control unit. The correction value can be calculated or taken from the database. Next, the biasing means biases the sensor 104 by an amount equal to the correction value, which improves the manufacturing accuracy of the spring.

The embodiments are not limited to the embodiments described here, other embodiments of the utility model will become apparent to a person skilled in the art based on the information set forth in the description and the knowledge of the prior art, which do not go beyond the essence and scope of this utility model.

Elements mentioned in the singular do not exclude the plurality of elements, unless otherwise specified.

The elements of the proposed device are located in a common housing, are structurally and functionally connected to each other through assembly (assembly) operations.

While the exemplary embodiments have been described in detail and shown in the accompanying drawings, it should be understood that such embodiments are illustrative only and are not intended to limit the wider utility model, and that the utility model should not be limited to the particular arrangements shown and described, and designs, as various other modifications may be apparent to those skilled in the art.

Claims (15)

1. Device for automatic production of long springs, containing: - a housing in which, by means of assembly operations, the elements of the device are fixed so as to perform their prescribed functions; - an element for moving the wire from the storage, made with the ability to direct the wire into the winding element; - a winding element configured to wind a spring from wire, the winding element being a spindle with equipment installed on it for winding a spring with a given diameter and pitch; - a cutting element configured to cut the spring from the wire after winding is completed; which additionally contains a triangular chute attached to the body under the axis of the spindle at an angle downwards and configured to receive a spring coming out of the spindle and guide it along its longitudinal axis, the first side of the chute being hinged to the second side of the chute and being rotatable by a drive; a spring detection sensor mounted at a spindle distal end of the triangular groove at a predetermined distance from the spindle, configured to detect a spring emerging from the spindle; moreover, the sensor is configured to provide a signal to complete the manufacture of the spring. 2. The device according to claim. 1, characterized in that it additionally contains a guide channel attached to a triangular chute, configured to receive and direct the manufactured spring into the storage container. 3. The device according to claim. 2, characterized in that the guide channel is movable relative to the container for laying the manufactured springs in rows. 4. The device according to claim. 1, characterized in that the channel contains a means of braking the spring. 5. The device according to claim 1, characterized in that the spring detection sensor is a self-returning button. 6. Device according to claim 1, characterized in that the spring detection sensor is a pressure sensor. 7. The device according to claim 1, further comprising a temperature sensor and a spring detection sensor biasing means, the temperature sensor being configured to control the biasing means depending on the measured spring temperature.

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