Wet wire drawing spare die string threading device

Abstract

The utility model relates to the technical field of steel cord production, and concretely relates to a die threading device for standby die string of wet-drawing steel wire, which comprises a tip pressing component, the tip pressing component comprises a pair of pressing rollers that are in close contact with each other and can be driven to rotate in opposite directions, the surface of each pressing roller is provided with a plurality of pressing grooves that differ in width, the positions of the pressing grooves with the same surface width of each pressing roller correspond, and a plurality of tip pressing grooves with different diameters are formed between the pair of pressing rollers. The tip pressing component can replace the manual polishing mode to process the end of the steel wire into a tip portion with different diameters, the required die can be sleeved on the outer wall of the steel wire, the die threading component can then elongate the steel wire, and the spacing between all the dies meets the predetermined spacing requirement. In this way, standby die strings of various specifications can be prepared, and the entire replacement process can be reduced by more than 50% compared with the previous process.

Description

Technical Field

[0001] This utility model relates to the field of steel cord production technology, and more specifically to a die-threading device for a spare die string of wet-drawn steel wire. Background Technology

[0002] The wet drawing process for steel wire products typically requires multiple consecutive drawing passes. The equipment generally features 23 to 25 drawing dies of progressively decreasing size, which are immersed in lubricating fluid. During the drawing process, the steel wire passes sequentially through the dies arranged from largest to smallest, gradually reducing in diameter to the target diameter. Initially, the wire must be threaded through the dies in the specified die chain order, from the largest die hole to the smallest.

[0003] During this process, the ends of the steel wire must be repeatedly rubbed manually (commonly known as "sharpening") to reduce their diameter and allow them to pass smoothly through the die holes. Then, the second, third, and all the die holes are threaded through sequentially. Finally, the steel wire is wound around the traction wheel, and the equipment's traction force is used to gradually pull each section of steel wire into the corresponding die box. Only after installation is complete can the equipment be started.

[0004] The aforementioned molding process is cumbersome and repetitive, and all operations must be repeated when changing production specifications, which seriously affects production efficiency and flexibility. Utility Model Content

[0005] To address the technical problems existing in the die-threading process of the prior art, this utility model proposes a die-threading device for wet-drawn steel wire spare die strings, comprising:

[0006] The tipping component includes a pair of pressure rollers that are in close contact with each other and can be driven to rotate in opposite directions. Each pressure roller has a plurality of pressure grooves of different widths on its surface. The pressure grooves of the same width on the surface of each pressure roller are positioned correspondingly, forming a plurality of tipping grooves of different diameters between the pair of pressure rollers.

[0007] The die-cutting component includes a pull roller, a die limiting seat, and a pull chain. The first end of the pull chain is connected to the pull roller, and the second end is used to connect to the steel wire. The die limiting seat is used to fix the die on the die string.

[0008] The steel wire can be squeezed by the tipping groove of the tipping component to form a tip with an increasing diameter, so that multiple dies with different inner diameters are sequentially inserted into the tip of the steel wire. The second end of the pull chain is pressed against the tip of the steel wire. Through the winding of the pull roller and the positioning of the die by the die limiting seat, a predetermined length segment is formed between two adjacent dies.

[0009] Preferably, the tipping component includes a driving component, a first pressure roller, a second pressure roller, and a support. The first and second pressure rollers are fixed by the support so that the roller surfaces of the first and second pressure rollers remain in contact. The driving component is used to drive the first and second pressure rollers to rotate relative to each other.

[0010] Preferably, the surfaces of the first and second pressure rollers are provided with grooves whose width gradually increases along their axial direction.

[0011] Preferably, the groove is a semi-circular groove, so that the cross-section of the pressure groove is circular.

[0012] Preferably, the surface of the pull roller is provided with a groove, the first end of the pull chain is provided with a locking block, and the second end is provided with a wire pressing device. The locking block is engaged in the groove so that the pull roller rotates and drives the pull chain to rotate.

[0013] Preferably, the wire presser is provided with a wedge-shaped groove, and a wedge block is provided in the wedge-shaped groove. When the tip of the steel wire is placed into the wedge-shaped groove, the wedge block presses the tip of the steel wire into the wedge-shaped groove.

[0014] Preferably, the height of the mold limiting seat is not lower than the upper end face of the traction roller.

[0015] Preferably, the upper end of the mold limiting seat is provided with a positioning groove, and an opening is provided above the positioning groove, so that the mold can be put into the positioning groove through the opening, thereby keeping the mold and the axis of the traction roller relatively fixed.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This invention uses a tipping component to process the ends of steel wires with different diameters, replacing manual grinding. This allows the required molds to fit over the outer wall of the steel wire. The threading component then stretches the steel wire and ensures that the spacing between all the molds meets the predetermined requirements. In this way, spare mold strings of various specifications can be prepared. If the mold being drawn is damaged or needs to be replaced as a set to adapt to different processes, the original mold string can be directly removed and replaced with a new one. The entire replacement process can be reduced by more than 50% compared to the previous method. Attached Figure Description

[0018] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0019] Figure 1This is a schematic diagram of the module string in the first state shown in this utility model;

[0020] Figure 2 This is a schematic diagram of the module string in the second state shown in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the tip-pressing component shown in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mold-piercing component shown in this utility model. Detailed Implementation

[0023] To better understand the technical content of this utility model, specific embodiments are provided below in conjunction with the accompanying drawings.

[0024] like Figure 1 As shown, the die string consists of a steel wire 100 and multiple dies 10 on the surface of the steel wire 100. Each die 10 has a die hole in its center. The purpose of the die hole is to allow the steel wire 100 to form a predetermined outer diameter after passing through the die hole of the die 10. The die hole sizes of all the dies 10 increase progressively, with the die 10 near the tip of the steel wire 10 having the smallest die hole size and the die 10 further away from the tip of the steel wire 10 having the largest die hole size. It should be understood that the tip of the steel wire 10 (currently formed by manual grinding) has a limited length, which cannot satisfy the requirement that all the dies 10 have a predetermined spacing. A predetermined spacing must be maintained between all the dies 10 before they can be placed on the drawing roller for wet drawing.

[0025] Combination Figure 2 As shown, the spacing between the molds 10 in the mold string needs to be stretched from the first spacing to the second spacing. Specifically, the original spacing between the molds is La1, La2, La3, La4, La5..., which needs to be finally adjusted to Lb1, Lb2, Lb3, Lb4, Lb5... Typically, the lengths of La1, La2, La3, La4, and La5 are very small, generally less than 10cm, while the lengths of Lb1, Lb2, Lb3, Lb4, and Lb5 are generally more than 50cm, thus requiring a stretching process.

[0026] Combination Figure 3 and Figure 4 As shown, this utility model proposes a die-threading device for a spare die string for wet-drawn steel wire, including a tip-pressing component 20 and a die-threading component 30. The tip-pressing component 20 is used to form a tip region of different diameters at the end of the steel wire 100, so that multiple dies 10 of different sizes can be fitted into the tip region. The die-threading component 30 is used to stretch the multiple dies 10 in the tip region to the target spacing to meet the wire drawing requirements of the drawing roller.

[0027] like Figure 3 As shown, the tip-pressing component 20 includes a pair of pressure rollers that are closely attached to each other and can be driven to rotate in opposite directions. Each pressure roller has multiple pressure grooves of different widths on its surface. The pressure grooves of the same width on the surface of each pressure roller are positioned correspondingly, forming multiple tip-pressing grooves 201 of different diameters between the pair of pressure rollers.

[0028] Specifically, the tipping component 20 includes a driving component 21, a first pressure roller 22, a second pressure roller 23, and a support 24. The first pressure roller 22 and the second pressure roller 23 are fixed by the support 24 so that the roller surfaces of the first pressure roller 22 and the second pressure roller 23 remain in contact. The driving component 21 is used to drive the first pressure roller 22 and the second pressure roller 23 to rotate relative to each other.

[0029] Optionally, the drive component 21 is a motor and a gear set located at the output end of the motor, which can drive the first pressure roller 22 and the second pressure roller 23 to rotate synchronously.

[0030] Furthermore, the surfaces of the first pressure roller 22 and the second pressure roller 23 are provided with grooves whose width gradually increases along their axial direction. The grooves are semi-circular, making the cross-section of the pressure tip groove 201 circular.

[0031] In this way, the steel wires 100 can be passed through the tipping grooves 201 in descending order of size, forming pointed ends of different diameters at the ends of the steel wires 100. For example, the diameters gradually increase from the entry section 101, the exit section 102, the subsequent section 103, and the final section 104. All the dies 10 can be inserted into the pointed ends. When inserting the dies 10, the dies with the largest hole size are inserted first, and then the dies with smaller hole sizes are inserted in turn, until all the dies 10 are at the pointed ends.

[0032] Furthermore, the die-cutting component 30 includes a pull roller 31, a die limiting seat 32, and a pull chain 33. The first end of the pull chain 33 is connected to the pull roller 31, and the second end is used to connect to the steel wire 100. The die limiting seat 32 is used to fix the die 10 on the die string.

[0033] Thus, when the steel wire 100 is squeezed by the tipping groove 201 of the tipping member 20 to form a tip with an increasing diameter, and multiple molds 10 with different inner diameters are sequentially inserted into the tip of the steel wire 100, the second end of the pull chain 33 is pressed against the tip of the steel wire 100. Through the winding of the pull roller 31 and the positioning of the mold 10 by the mold limiting seat 32, a predetermined length segment is formed between two adjacent molds 10.

[0034] Specifically, the surface of the pull roller 31 is provided with a groove 311, the first end of the pull chain 33 is provided with a locking block 331, and the second end is provided with a wire presser 34. The locking block 331 is inserted into the groove 311, so that when the pull roller 31 rotates, it drives the pull chain 33 to rotate.

[0035] The wire clamp 34 is provided with a wedge-shaped groove, and a wedge block is provided in the wedge groove.

[0036] Thus, when the tip of the steel wire 100 is placed into the wedge groove, the wedge block presses the tip of the steel wire 100 into the wedge groove.

[0037] Furthermore, the height of the mold limiting seat 32 is not lower than the upper end face of the traction roller 31. This facilitates the formation of a tangential path between the mold hole of the mold 10 and the steel wire above the traction roller 31, avoiding excessive stress on the steel wire.

[0038] Specifically, the upper end of the mold limiting seat 32 is provided with a positioning groove, and an opening is provided above the positioning groove. The mold 10 can be placed into the positioning groove through the opening, so that the mold 10 and the axis position of the pulling roller 31 are kept relatively fixed.

[0039] In a specific embodiment, the mold 10 with the smallest die hole is placed in the positioning groove of the mold limiting seat 32, and the pull roller 31 is controlled to rotate until the predetermined length is reached. The mold 10 with the smallest die hole is then removed, and the mold 10 with a slightly larger die hole diameter is placed in the positioning groove of the mold limiting seat 32. The pull roller 31 is then controlled to rotate until the distance Lb1 between the mold 10 and the previous mold 10 reaches the target length. The mold 10 with a slightly larger die hole is then placed in the positioning groove of the mold limiting seat 32. The above operation is repeated until the distance between all the molds 10 meets the requirements, thus forming a complete mold string, which can be used as a spare mold string that can be replaced to the drawing roller at any time.

[0040] In conjunction with the above embodiments, this utility model uses a tipping component to process the ends of the steel wire into tips of different diameters instead of manual grinding, so that the required mold can be fitted onto the outer wall of the steel wire. Then, the threading component can stretch the steel wire and make the spacing between all the molds meet the predetermined spacing requirements. In this way, spare mold strings of various specifications can be prepared. Once the mold being drawn is damaged or needs to be replaced as a set to adapt to different processes, the original mold string can be directly removed and replaced with a new mold string. The entire replacement process can be reduced by more than 50% compared to the previous method.

[0041] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A die-threading device for a spare die string for wet-drawn steel wire, characterized in that, include: The tip-pressing component (20) includes a pair of pressure rollers that are closely attached to each other and can be driven to rotate in opposite directions. Each pressure roller has a plurality of pressure grooves of different widths on its surface. The pressure grooves of the same width on the surface of each pressure roller are positioned correspondingly, forming a plurality of tip-pressing grooves (201) of different diameters between the pair of pressure rollers. The die-cutting component (30) includes a pull roller (31), a die limiting seat (32), and a pull chain (33). The first end of the pull chain (33) is connected to the pull roller (31), and the second end is used to connect to the steel wire (100). The die limiting seat (32) is used to fix the die (10) on the die string. The steel wire (100) can be squeezed by the tipping groove (201) of the tipping member (20) to form a tip with an increasing diameter, so that multiple molds (10) with different inner diameters are sequentially inserted into the tip of the steel wire (100). The second end of the pull chain (33) is pressed into the tip of the steel wire (100). Through the winding of the pull roller (31) and the positioning of the mold (10) by the mold limiting seat (32), a predetermined length segment is formed between two adjacent molds (10).

2. The threading device for the spare die string of wet-drawn steel wire according to claim 1, characterized in that, The pressure tip component (20) includes a drive component (21), a first pressure roller (22), a second pressure roller (23), and a bracket (24). The first pressure roller (22) and the second pressure roller (23) are fixed by the bracket (24) so ​​that the roller surfaces of the first pressure roller (22) and the second pressure roller (23) remain in contact. The drive component (21) is used to drive the first pressure roller (22) and the second pressure roller (23) to rotate relative to each other.

3. The threading device for the spare die string of wet-drawn steel wire according to claim 2, characterized in that, The surfaces of the first pressure roller (22) and the second pressure roller (23) are provided with grooves whose width gradually increases along their axial direction.

4. The threading device for the spare die string of wet-drawn steel wire according to claim 3, characterized in that, The groove is a semi-circular groove, making the cross-section of the pressure point groove (201) circular.

5. The threading device for the spare die string of wet-drawn steel wire according to claim 1, characterized in that, The surface of the pull roller (31) is provided with a groove (311), the first end of the pull chain (33) is provided with a locking block (331), and the second end is provided with a wire presser (34). The locking block (331) is inserted into the groove (311) so that the pull roller (31) rotates and drives the pull chain (33) to rotate.

6. The threading device for the spare die string of wet-drawn steel wire according to claim 5, characterized in that, The wire presser (34) is provided with a wedge groove and a wedge block is provided in the wedge groove. When the tip of the steel wire (100) is placed into the wedge groove, the tip of the steel wire (100) is pressed into the wedge groove by the wedge block.

7. The threading device for the spare die string of wet-drawn steel wire according to claim 1, characterized in that, The height of the mold limiting seat (32) is not lower than the upper end face of the traction roller (31).

8. The threading device for the spare die string of wet-drawn steel wire according to claim 1, characterized in that, The upper end of the mold limiting seat (32) is provided with a positioning groove, and an opening is provided above the positioning groove. The mold (10) can be placed into the positioning groove through the opening, so that the axial position of the mold (10) and the traction roller (31) remains relatively fixed.

Images