SK422023A3 - Wire unwinding device for bead wires production lines and wire unwinding method - Google Patents

Abstract

The wire unwinding device for the shoe rope production lines includes a support frame (1) formed by a base plate (7), which has drilled holes for the anchoring screws (28), on both sides of the base plate (7) are welded on its edges stand-offs ( 8) of the supporting frame, through which the clamping group (5), braking group (3) and wire guiding group (24) are attached to the supporting frame (1) by means of brackets (12). To the support frame (1), in its lower part, the leads (9) are screwed for placing the coil (2) between the uprights (8) of the support frame, and around the coil (2) there are two profiles, the right profile (A) and the left profile (B) ) to guide the coil (2) to the desired position, while the left profile (B) is also the side stop of the coil (2) and the back stops (27) of the coil are screwed into the rear part of the device, and an auxiliary is placed on the right side of the support frame (1) drive (11) to release the coil (2) from the clamping group (5). The clamping group (5) contains the extendable left shaft (18) and right shaft (20) of the clamping group, while the left shaft (18) is slidably mounted in rolling bearings (31) located on both sides of the clamping group (5) and the right shaft (20) ) of the clamping group is connected to the brake drum (15) by means of a flange (32) with driving pins for the transmission of torque from the coil (2); the clamping group (5) is connected to the clamping cylinder (21) and to the lever mechanism (22), and the clamping group (5) has a connected pneumatic brake (23) to secure the clamping mechanism. The brake group (3) consists of a control pulley (10) which is attached to the lever mechanism (13) of the brake group, at the end of which there is a brake shoe (14) for exerting pressure on the brake drum (15). The group (24) of guiding the wire includes a system of rollers of the first roller (16A) and the second roller (16B) for guiding the wire (17) from the spool (2), and in the system of rollers there is a sensor (19) of tension in the wire connected to the control unit (25) , and the device includes a cover (6) attached to the back of the device. The method of unwinding the wire for the lines for the production of bead ropes is that the clamping cylinder (21) through the lever mechanism (22) acts on the left shaft (18) of the clamping group (5) and derives a force in the axis of the spool (2), by the action of the force it is pushed out the left shaft (18) terminated by a conical surface (26), which is inserted into the cone (30) of the coil, and the coil (2) is lifted by the action of the vertical component of the force and involuntarily clamped in the device.

Description

The field of technology

The technical solution relates to a wire unwinding device for a line for the production of bead ropes and a method of unwinding the wire in such a device.

Current state of the art

The heel rope consists of a rubberized steel wire wound into a certain cross-section, e.g. square, rectangle, pentagon or hexagon. Various unwinding devices are used when unwinding the heel rope. There are known devices on the market that are used in various fields of industry for unwinding wire, threads or cables. Such unwinding devices consist of several main parts: clamping the coils, guiding the wire, the brake control mechanism and the brake itself. Equipment currently available on the market is usually supplied as part of automated single-purpose lines or is of an outdated design that requires considerable manual force to be exerted when guiding and clamping the coils in the unwinding station. Also, the ergonomics and safety of these devices are often insufficient, due to the high weight of the coils and their low storage. Replacing coils in existing devices requires the disadvantageous replacement of the central shaft, which must be moved from an empty to a new full coil.

The essence of the invention

The mentioned shortcomings and disadvantages of the existing solutions are eliminated by the wire unwinding device for the lines for the production of bead ropes and the method of unwinding the wire using this device. The basis of the construction of the device is a welded spatial support frame. The supporting frame is formed by a base plate, which has drilled holes for anchoring screws. Stands of the support frame are welded to the base plate, which serve to attach the clamping group and the brake group. In order to make it easier for the operator to roll the coil, the support frames are screwed to the support frame, allowing the support to be started also from the back side of the support frame, which serve as a barrier against the spontaneous rolling of the coil. Lateral guidance of the coil into the correct position is ensured by two profiles, the right profile and the left profile, of which the left profile also serves as a lateral stop for the coil when it is released from the cone of the clamping group. The right profile A is sliding to accommodate different coil widths. To ensure the correct positioning of the coil during rolling, the rear stops of the coil are screwed. Releasing the coil from the clamping group is ensured by the auxiliary drive, which is located on the right side of the supporting frame. The brake group is attached to the supporting frame using brackets. The brake group consists of a control pulley whose upward and downward movement is dependent on the movement of the wire and controls the braking or release of the coil. The control pulley is attached to the lever mechanism, in which the necessary amplification of the control force occurs. The brake shoe is located at the end of the lever mechanism and its pressure on the brake drum ensures the braking torque. The wire guide group is attached to the support frame with brackets. Guides the wire from the coil through a set of pulleys, the first pulley and the second pulley so that the wire is directed in the direction of the axis of the coil. In the pulley system, the pull is detected in the wire, while the pull is stepped, i.e. j. if the tension falls below the permitted value, the control unit evaluates the state of the unwinding device based on the data, so that the operation of the device is interrupted. In that case, the operator must intervene to check the wire routing in the pulleys. The clamping group, by deriving the force in the axis of the coil, ensures friction in the contact of the conical surfaces of the coil with the cones of the clamping group, which ensures the lifting of the coil and the free clamping of the coil. The left shaft of the clamping group is extendable and ensures the clamping of the coil, and for this purpose it is stored in a sliding bearing. Its rotational movement is ensured by rolling bearings located on both sides of the clamping group. The right shaft ensures the transmission of the torque from the coil to the brake drum through a flange with drive pins. The clamping drive is ensured by means of a clamping cylinder and a lever mechanism. Securing the clamping group is ensured by means of a pneumatic brake, which secures the clamping mechanism in case of disconnection of the device from the power supply, and allows access for the device operator. The cover of the device is designed to comply with valid safety regulations in the EU and to protect the device against damage in case of free movement of the wire (in the case of a wire end or a wire tear).

The coil clamping operation is characterized by the fact that it takes place automatically without the need for operator intervention, thus reducing the risk of injury and simplifying the operator's work. The operator introduces the wire without the need to pass the wire from hand to hand. The construction of the brake mechanism is simple and has a minimum number of moving parts, which makes operation cheaper and simplifies the maintenance of the device. The brake is gravitational, which will ensure that the device stops when the power supply is lost. The clamping mechanism of the device allows clamping of different coil widths.

SK 42-2023 A3

The reel always rotates away from the operator, which reduces the risk of injury to the operator. The design of the device makes it possible to adjust the tension in the wire by adding weights. The main advantages of the device according to the presented technical solution compared to the current state of the art is that the coils are clamped in the device without the use of tools. This ensures that inserting the wire into the device is easy and quick. At the same time, the effective brake of the device enables the achievement of the required operating parameters of the line for the production of beaded ropes, such as the rubberizing speed of the ropes and the size of the storage capacity. The advantage of the device is its universality, it can be used for all widths of coils used for lines for the production of beaded ropes. The device also ensures safe operation of the device by personnel, e.g. the basic safety requirement, which is to rotate the spool in the direction of the operator.

Overview of images on drawings

The attached drawings serve to further clarify the essence of the technical solution, where:

Fig. 1 shows a general view of the device from the front showing the unwinding device and the method of introducing the wire fig. 2 shows a general view of the device from the side, showing the unwinding device fig. 3 shows a general view of the device from the back.

Examples of implementation of the invention

Example 1

In fig. 1, fig. 2 and in fig. 3 shows a wire unwinding device for bead rope production lines and a wire unwinding method using this device. The basis of the construction of the device is a welded spatial support frame 1. The device includes a support frame 1 formed by a base plate 7, which has drilled holes for anchoring screws 28. On both sides of the base plate 7, the supports 8 of the support frame are welded on its edges, through which the to the support frame 1 fixed by means of brackets 12 clamping group 5, brake group 3 and group 24 of wire guidance. To make it easier for the operator to roll out the coil 2, there are screws 9 to the support frame 1, which also allow the roll-in from the back of the support frame 1, which serve as a barrier against the spontaneous roll-out of the coil 2. Lateral guidance of the coil 2 into the correct position is ensured by two profiles, the right profile A and left profile B, of which the left profile B also serves as a side stop for the coil 2 when it is released from the cone 26 of the clamping group 5. The right profile A is movable so that different widths of the coils 2 can be used. To ensure the correct positioning of the coil 2 during rolling, there are bolted rear stops 27 of coil 2. Releasing coil 2 from clamping group 5 is ensured by auxiliary drive 11, which is located on the right side of the supporting frame 1. Clamping group 5 contains a retractable left shaft 18 and right shaft 20 of the clamping group. The left shaft 18 is slidably mounted in rolling bearings 31 located on both sides of the clamping group 5. The right shaft 20 of the clamping group is connected to the brake drum 15 by means of a flange 32 with driving pins 50 for the transmission of torque from the coil 2. The clamping group 5 is connected to the clamping cylinder 21 and to the lever mechanism 22 and the clamping group 5 has a connected pneumatic brake 23 to secure the clamping mechanism. The brake group 3 consists of a control pulley 10, which is attached to a lever mechanism 13, in which the necessary amplification of the control force occurs. The brake shoe 14 is located at the end of the lever mechanism 13 and its pressure on the brake drum 15 ensures the braking torque. The wire guiding group 24 contains a set of pulleys - the first pulley 16A and the second pulley 16B for guiding the wire 17 from the coil 2. In the pulley system, there is a sensor 19 of the tension in the wire connected to the control unit 25. Sensing of the tension is step-by-step, i.e. j. if the tension falls below the permitted value, the control unit 25 evaluates the state of the unwinding device based on the data, so that the operation of the device is interrupted. In that case, the operator must intervene to determine the cause of the decrease in wire tension. The device includes 6 devices attached to the back cover. The cover 6 of the device is designed to comply with valid safety regulations in the EU and to protect the device against damage due to free movement of the wire (wire end, wire tearing). The wire guide group 24 is connected to a set of pulleys for guiding the wire 17 from the coil 2 in the direction 5 of the axis of the coil 2. The ramps 9 for rolling the coil 2 into the device have a design adapted to the ramp of the coil 2 also from the back side of the support frame 1. The right profile A is sliding and is adapted to insert variable width coils 2. The cover 6 of the device is made of a material that protects the device against damage during free 10 movement of the wire 17. The pneumatic brake 23, which serves to secure the clamping mechanism, always has a gravity design. The method of unwinding the wire for the lines for the production of bead ropes using the device according to the presented solution is defined by the fact that the clamping group 5 derives a force in the axis of the coil 2, thereby creating

SK 42-2023 A3 friction at the point of contact of the conical surfaces 30 of the coil with the cones 26 of the clamping group, as a result of which the coil 2 is raised and is involuntarily clamped in the device. The left shaft 18 of the clamping group 5 is extendable and ensures the clamping of the coil 2, for this purpose it is stored in a sliding bearing 19. Its rotational movement ensures storage in rolling bearings 31, which are on both sides of the clamping group. The right shaft 20 ensures the transmission of the torque from the coil 2 to the brake drum 15 through the flange 32 with the driving pins. The clamping drive is ensured by means of the clamping cylinder 21 and the lever mechanism 22. The securing of the clamping group 5 is ensured by means of a pneumatic brake 23, which secures the clamping mechanism 5 in the event of disconnection from the power supply and allows access to the equipment operator. In the case of disconnection of the device from the power supply, the pneumatic brake 23 secures the mechanism of the clamping group 5. The sensor 19 detects the tension values in the wire 17 and transmits them electronically to the control unit 25. If the values transmitted in this way fall below the pre-set value, the control unit 25 interrupts the operation of the device . The control roller 10 controls the braking or release of the coil 2. The up and down movement of the control roller 10 changes depending on the movement of the wire 17. The rotation of the coil 2 is set in the direction of the operator's approach to the device and is clamped in the device automatically without operator intervention.

Industrial applicability

The presented technical solution relates to the rubber industry and can be used in the production of winding bead ropes for car tyres.

Claims (11)

1. Wire unwinding device for bead rope production lines, characterized in that it contains a supporting frame (1) formed by a base plate (7) which has drilled holes for anchor bolts (28), and on the base plate (7) are welded on both sides on its edges, the uprights (8) of the support frame, through which the clamping group (5), the brake group (3) and the wire guiding group (24) are attached to the support frame (1) by means of brackets (12), and to the support the frame (1) has screw-in leads (9) in its lower part for placing the coil (2) between the uprights (8) of the supporting frame (1), and two profiles are placed around the coil (2), the right profile (A) and the left profile (B) for guiding the coil (2) to the desired position, while the left profile (B) is also the side stop of the coil (2) and the back stops (27) of the coil are screwed into the rear part of the device, and on the right side of the supporting frame (1) is located auxiliary drive (11) to release the coil (2) from the clamping group (5); and the clamping group (5) contains the extendable left shaft (18) and the right shaft (20) of the clamping group, while the left shaft (18) is slidably mounted in rolling bearings (31) located on both sides of the clamping group (5) and is terminated by a conical with a surface (26) that is inserted into the cone (30) of the coil, and the right shaft (20) of the clamping group is connected to the brake drum (15) by means of a flange (32) with drive pins for the transmission of torque from the coil (2), and the clamping group (5) is connected to the clamping cylinder (21) and the lever mechanism (22), and the clamping group (5) has a connected pneumatic brake (23) to secure the clamping mechanism, which has a gravity structure; the brake group (3) consists of a control pulley (10) which is attached to the lever mechanism (13) of the brake group, at the end of which there is a brake shoe (14) for exerting pressure on the brake drum (15); the group (24) of guiding the wire includes a system of rollers of the first roller (16A) and the second roller (16B) for guiding the wire (17) from the spool (2), and in the system of rollers there is a sensor (19) of tension in the wire connected to the control unit (25) ), and the device includes a cover (6) attached to the back of the device. 2. Device according to claim 1, characterized in that the group (24) of guiding the wire is connected to a system of rollers for guiding the wire (17) from the coil (2) in the direction of the axis of the coil (2). 3. The device according to claim 1, characterized in that the ramps (9) for rolling the coil (2) into the device have a structure adapted to the ramp of the coil (2) also from the back of the supporting frame (1). 4. Device according to claim 1, characterized in that the right profile (A) is movable and adapted to insert variable width coils (2). 5. The device according to claim 1, characterized in that the covering (6) of the device is made of a material that protects the device against damage during free movement of the wire (17). 6. A method of unwinding wire for lines for the production of bead ropes using the device according to claim 1, characterized in that the clamping cylinder (21) acts on the left shaft (18) of the clamping group (5) via the lever mechanism (22) and derives the force in the axis coil (2), the left shaft (18) terminated by a conical surface (26), which is inserted into the cone (30) of the coil, is pushed out by the force, and the coil (2) is lifted by the vertical component of the force and involuntarily clamped in the device, while the transmission of torque from the coil (2) to the brake drum (15) is ensured by means of a flange (32) with drive pins on the right shaft (20). 7. Method of unwinding the wire for lines for the production of bead ropes according to claim 6, characterized in that in case of disconnection of the device from the power supply, the pneumatic brake (23) secures the mechanism of the clamping group (5). 8. A method of unwinding wire for lines for the production of beaded ropes according to claim 6, characterized in that the sensor (19) detects the tension values in the wire (17) and transmits them electronically to the control unit (25), while if the transmitted values fall below the forward preset value, the control unit (25) interrupts the operation of the device. 9. A method of unwinding wire for lines for the production of bead ropes according to claim 6, characterized in that the control pulley (10) controls the braking or unbraking of the spool (2), while the up and down movement of the control pulley (10) changes depending on wire movement (17). 10. A method of unwinding wire for lines for the production of bead ropes according to claim 6, characterized in that the coil (2) has a rotation set in the direction of the access of the operator to the device. 11. Method of unwinding wire for lines for the production of bead ropes according to claim 6, characterized in that the coil (2) is clamped automatically in the device without operator intervention.