A pre-twisted wire end grinding device

Abstract

This invention discloses a pre-twisted wire end grinding device, including a worktable and a power mechanism, a positioning module, and a pre-twisted wire support platform mounted on the worktable. The positioning module is located between the power mechanism and the pre-twisted wire support platform. The power mechanism includes a grinding wheel and a drive device for rotating the grinding wheel. The positioning module, located diagonally below the grinding wheel, has a pre-twisted wire end positioning surface and a guide slope that connects to the lower edge of the pre-twisted wire end positioning surface and extends downwards to connect with the pre-twisted wire support platform. A baffle is provided on one side of the positioning module on the worktable for pre-aligning the end faces of a set of pre-twisted wires to be ground. This invention, by setting up a positioning module and a pre-twisted wire support platform, solves the problems of low production efficiency, unstable grinding effect on pre-twisted wire ends, and high labor intensity of existing grinding methods, and has the advantages of strong applicability and convenient and rapid adjustment.

Description

Technical Field

[0001] This invention relates to the field of pre-twisted wire grinding equipment, and more particularly to a pre-twisted wire end grinding device. Background Technology

[0002] Prestressed wire, also known as protective wire, is a connecting hardware used for overhead power conductors and the termination, suspension, and joints of overhead optical cables. It is primarily used to protect transmission lines and optical cables. Prestressed wire first appeared in the United States in the 1940s and 50s, initially as spiral protective wires for protecting bare conductors at stress concentration points and against electro-corrosion and arc damage. After years of development, prestressed wire is now widely used in the field of high-voltage transmission line technology.

[0003] As attached Figure 1-3 As shown, the pre-twisted wire 5 is a product made of spiral-shaped metal wires with a certain degree of elasticity, pre-twisted together. The diameter of the pre-twisted wire 5 itself indicates the thickness of the pre-twisted wire, while the diameter of the spiral of the pre-twisted wire 5 indicates the size of the spiral formed by the spiral-shaped pre-twisted wire 5. Before use, the pre-twisted wire 5 generally requires a grinding process, that is, the end of the pre-twisted wire 5 is ground into an arc shape to remove the burrs at the end of the pre-twisted wire 5.

[0004] For example, Chinese patent CN216830063U, entitled "A Pre-Twisted Wire Forming End Burr Grinding Device", discloses a pre-twisted wire forming end burr grinding device, including a polishing machine. A grinding disc is fixedly installed on the main shaft of the polishing machine. Multiple rings of burr grinding grooves are provided on the circumferential surface of the grinding disc. The center line of the main shaft of the polishing machine is perpendicular to each ring of burr grinding grooves. The cross-sectional shape of the burr grinding grooves is the same as the transverse cross-sectional shape of the pre-twisted wire forming end.

[0005] The aforementioned grinding machine improves upon the manual grinding method using files by employing a mechanical grinding disc for high-speed grinding, thus increasing work efficiency. However, this grinding method still relies entirely on manual operation to press the pre-twisted wire against the grinding disc, making it difficult to control the grinding amount and depth. Furthermore, it cannot grind multiple pre-twisted wires simultaneously, thus failing to achieve batch grinding. Therefore, further improvements are needed. Summary of the Invention

[0006] To address the problems existing in the prior art, the present invention aims to provide a pre-twisted wire end grinding device. This device, by setting up a positioning module that cooperates with the grinding wheel and a pre-twisted wire support platform, enables operators to not only conveniently position the ends of a group of pre-twisted wires simultaneously, but also to complete the synchronous grinding of the ends of the group of pre-twisted wires by simply pushing and turning the pre-twisted wires. This achieves batch operation of pre-twisted wire end grinding, improves production efficiency, ensures the quality of pre-twisted wire end grinding, reduces the labor intensity of operators, and ensures the safety of grinding operations.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A pre-twisted wire end grinding device includes a worktable, a power mechanism and a positioning module mounted on the worktable, and a pre-twisted wire support platform disposed on the worktable. The positioning module is located between the power mechanism and the pre-twisted wire support platform. The power mechanism includes a drive device and a grinding wheel, and the drive device drives the grinding wheel to rotate. The positioning module is located diagonally below the grinding wheel. The positioning module is provided with a pre-twisted wire end positioning surface and a guide slope that connects to the lower edge of the pre-twisted wire end positioning surface and extends downward to connect with the pre-twisted wire support platform. A baffle is provided on one side of the positioning module on the worktable for pre-aligning the end faces of a set of pre-twisted wires to be ground.

[0009] Furthermore, the pre-twisted wire end positioning surface is formed by a plane perpendicular to the pre-twisted wire support platform, and the height of the pre-twisted wire end positioning surface is less than the diameter of the pre-twisted wire to be polished.

[0010] Furthermore, the lower edge height of the pre-twisted wire end positioning surface is higher than the spiral diameter of the pre-twisted wire to be ground.

[0011] Furthermore, the workbench is provided with an adjustment mechanism for adjusting and fixing the position of the positioning module relative to the grinding wheel in the vertical and horizontal directions.

[0012] Furthermore, the worktable is provided with a transverse slide to accommodate the positioning module, and the adjustment mechanism is provided with a position adjustment handle. The position adjustment handle allows the positioning module to slide within the transverse slide to move it away from or closer to the grinding wheel.

[0013] Furthermore, the adjustment mechanism includes a movable support with a vertical slide rail. The positioning module is disposed in the vertical slide rail on the movable support and can move up and down along the vertical slide rail. A transverse slide rail is provided on the worktable, and the movable support is disposed in the transverse slide rail and can move along the transverse slide rail. The position adjustment handle includes a transverse adjustment handle and a vertical adjustment handle. The transverse adjustment handle is used to adjust the transverse position of the movable support, and the vertical adjustment handle is used to adjust the vertical position of the positioning module.

[0014] Furthermore, the positioning module includes a positioning module body and a stop blade. The positioning module body is provided with the guide slope and the receiving groove. The stop blade is received in the receiving groove and can move up and down along the receiving groove. The surface of the stop blade that is in contact with the guide slope constitutes the pre-twisted wire end positioning surface. A height adjustment handle for adjusting and fixing the vertical position of the stop blade is provided between the positioning module body and the stop blade.

[0015] Furthermore, the angle α between the line connecting the intersection of the extension of the pre-twisted wire end positioning surface on the cutting edge and the outer edge of the grinding wheel to the center of the grinding wheel and the horizontal direction is 30 to 60 degrees; the angle β between the tangent of the end of the pre-twisted wire to be ground and the contact point of the grinding wheel and the guide slope is 55 to 85 degrees.

[0016] Furthermore, the grinding wheel includes an annular mounting block and a sanding belt, with the sanding belt sleeved on the annular mounting block.

[0017] Furthermore, the annular mounting block is made of an elastic material, and a plurality of tensioning grooves with an inclined direction adapted to the rotation direction of the grinding wheel are provided on the outer circumference of the annular mounting block. The tensioning grooves tension the sanding belt when the grinding wheel rotates.

[0018] Furthermore, multiple height adjustment handles are arranged along the length of the guard blade.

[0019] Furthermore, the angle between the guide slope and the pre-twisted wire support plane is not less than 20 degrees.

[0020] Furthermore, the vertical slide rail on the movable support is composed of a guide rail or a guide groove, and the positioning module is provided with a guide groove or guide rail that cooperates with the guide rail or the guide groove.

[0021] Furthermore, the workbench includes a grinding table and an equipment mounting base. The equipment mounting base is located at one end of the grinding table. The power mechanism and the positioning module are both located on the equipment mounting base. The pre-twisted wire support platform is formed by the tabletop of the grinding table.

[0022] Furthermore, the equipment mounting base is provided with a mounting plate, and is fixed to one end of the grinding table through the mounting plate. A handwheel is provided between the grinding table and the mounting plate, and the position of the equipment mounting base in the vertical direction is adjusted by the handwheel.

[0023] Furthermore, the positioning module has an inclined surface on the side facing the grinding wheel to allow for the working space of the grinding wheel.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) The positioning module can simultaneously position and support the ends of a set of pre-twisted wires. The operator only needs to push the pre-twisted wires arranged in a row on the pre-twisted wire support platform toward the grinding wheel. The ends of the entire set of pre-twisted wires can automatically climb and move along the guide slope and be positioned and supported at the pre-twisted wire end positioning surface. At the same time, the operator can then rub the pre-twisted wires laterally on the pre-twisted wire support platform away from the grinding wheel to rotate them, thus quickly completing the grinding of the ends of the entire set of pre-twisted wires. This not only greatly improves the grinding efficiency of the pre-twisted wire ends and ensures the grinding quality, but also ensures the operator's operational safety and reduces the operator's labor intensity.

[0026] (2) The position of the positioning module can be adjusted by the horizontal adjustment handle and the vertical adjustment handle, the position of the guard can be adjusted by the height adjustment handle, and the vertical height of the equipment mounting base can be adjusted by the adjustment screw and the handwheel, so that the grinding device can meet the grinding of pre-twisted wire ends of different diameters without having to replace the positioning module of different heights, which greatly improves the practicality of the grinding device.

[0027] (3) The sanding belt is fitted onto the grinding wheel. The sanding belt and the grinding wheel are detachably connected, which makes it easy to replace the worn sanding belt regularly. The tensioning grooves on the grinding wheel, which are adapted to the rotation direction of the grinding wheel, will expand outward under the action of centrifugal force when the grinding wheel rotates at high speed, thereby tensioning the sanding belt and ensuring the stability of the sanding belt position.

[0028] (4) By setting baffles on the workbench, operators can easily align the ends of a set of pre-twisted wires by pushing them on the pre-twisted wire support platform, which creates conditions for ensuring the grinding quality of each pre-twisted wire end and further improving grinding efficiency. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the shape of a single pre-twisted wire Figure 1 ;

[0031] Figure 2 Schematic diagram of the shape of a single pre-twisted wire Figure 2 ;

[0032] Figure 3 A schematic diagram showing multiple pre-twisted wires arranged in a row;

[0033] Figure 4This is a schematic diagram showing the state of a set of pre-twisted wire ends during polishing.

[0034] Figure 5 This is a schematic diagram of the state of the grinding device of the present invention after the outer shell has been removed;

[0035] Figure 6 This is a structural diagram of the equipment mounting base;

[0036] Figure 7 This is a schematic diagram of the power mechanism;

[0037] Figure 8 This is a schematic diagram of the end face structure of the grinding wheel;

[0038] Figure 9 This is a three-dimensional structural diagram of a grinding wheel;

[0039] Figure 10 Schematic diagram of the adjustment mechanism and positioning module. Figure 1 ;

[0040] Figure 11 Schematic diagram of the adjustment mechanism and positioning module. Figure 2 ;

[0041] Figure 12 A schematic diagram of the transverse slide rail on the equipment mounting base;

[0042] Figure 13 This is a schematic diagram of the movable support structure;

[0043] Figure 14 Schematic diagram of the positioning module Figure 1 ;

[0044] Figure 15 Schematic diagram of the positioning module Figure 2 ;

[0045] Figure 16 This diagram illustrates the positional relationship between the positioning module and the grinding wheel when the module is adjusted to the rightmost end of the horizontal slide.

[0046] Figure 17 This is a schematic diagram showing the positional relationship between the positioning module and the grinding wheel when the module is adjusted to the leftmost end of the horizontal slide.

[0047] In the diagram: 1. Grinding table; 11. Table leg; 12. Tabletop; 2. Equipment mounting base; 21. Fixing rod; 22. Mounting plate; 23. Support plate; 231. Baffle; 232. Horizontal slide rail; 3. Power mechanism; 31. Electric motor; 311. Motor pulley; 32. Transmission belt; 33. Rotating spindle; 331. Spindle pulley; 34. Bearing housing; 35. Grinding wheel; 351. Annular mounting block; 3511. Tensioning groove; 352. Sanding belt; 4. Protective components; 1. Belt protective housing; 42. Main shaft protective housing; 43. Grinding wheel protective housing; 44. Shavings collection groove; 5. Pre-twisted wire; 6. Adjustment mechanism; 61. Movable bracket; 611. Guide rail; 62. Positioning module body; 621. Guide groove; 622. Accommodation groove; 623. Guide slope; 63. Cutting edge; 631. Pre-twisted wire end positioning surface; 64. Horizontal adjustment handle; 65. Vertical adjustment handle; 66. Height adjustment handle; 67. Handwheel; 68. Locking bolt. Detailed Implementation

[0048] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0049] It should be noted that the embodiments and features involved in the embodiments of this invention can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0050] As attached Figure 4-7 As shown, a pre-twisted wire end grinding device includes a worktable, a power mechanism 3 and a positioning module mounted on the worktable, and a pre-twisted wire support platform set on the worktable.

[0051] The workbench includes a grinding table 1 for supporting the pre-twisted wire 5 and an equipment mounting base 2. The equipment mounting base 2 is located at one end of the grinding table 1, and the power mechanism 3 and the positioning module are both located on the equipment mounting base 2.

[0052] The positioning module is located between the power mechanism 3 and the pre-twisted wire support platform. The positioning module is provided with a pre-twisted wire end positioning surface 631 and a guide slope 623 that connects to the lower edge of the pre-twisted wire end positioning surface 631 and extends downwards to connect with the pre-twisted wire support platform.

[0053] The equipment mounting base 2 includes a vertically arranged mounting plate 22 and a horizontally arranged support plate 23. The top of the mounting plate 22 and the bottom of the support plate 23 can be fixed by welding or integrally formed.

[0054] The power mechanism 3 includes a grinding wheel 35 and a drive device for driving the grinding wheel 35 to rotate. In this invention, the drive device is an electric motor 31.

[0055] The output shaft of the motor 31 is coaxial with the motor pulley 311 and drives the motor pulley 311 to rotate; the grinding wheel 35 is coaxial with the rotating main shaft 33, and a main shaft pulley 331 is provided at the end of the rotating main shaft 33 away from the grinding wheel 35. The motor pulley 311 and the main shaft pulley 331 rotate synchronously through two transmission belts 32.

[0056] Two spaced bearing seats 34 are provided between the main shaft pulley 331 and the grinding wheel 35 to reduce vibration. A bearing is provided between the rotating main shaft 33 and the bearing seats 34 to ensure stable transmission of the rotating main shaft 33.

[0057] The pre-twisted wire end grinding device of this invention is also equipped with a protective component 4. The protective component 4 includes a belt protective housing 41 disposed around the transmission belt 32, the motor pulley 311, and the main shaft pulley 331; a main shaft protective housing 42 disposed around the two bearing seats 34; a grinding wheel protective housing 43 disposed around the grinding wheel 35; and a shavings collection trough 44 disposed on the support plate 23 and located directly below the grinding wheel 35. The belt protective housing 41, the main shaft protective housing 42, and the grinding wheel protective housing 43 can effectively protect workers from accidental contact with the components of the power mechanism 3, preventing accidental injury. In actual use, the lower end of the shavings collection trough 44 is also connected to a collection pipe to collect the shavings, dust, and grit generated during the grinding of the pre-twisted wire 5, preventing them from falling onto the motor 31 or into the workshop and causing pollution.

[0058] The grinding table 1 consists of four table legs 11 and a tabletop 12. The length of the tabletop 12 is not less than the length of the pre-twisted wire 5, which makes it easy for the operator to push multiple pre-twisted wires 5 to the grinding wheel 35 for grinding. The pre-twisted wire support platform is formed by the tabletop 12 of the grinding table 1.

[0059] A device mounting base 2 is fixed to one side of the grinding table 1, and the height of the grinding table 1 is adapted to the height of the device mounting base 2. Specifically, four elongated holes are respectively opened on the mounting plate 22 at positions corresponding to the table legs 11 of the grinding table 1. Bolts are passed through the elongated holes and the table legs 11 of the grinding table 1 and then tightened to fix them, thereby fixing the device mounting base 2 to the side of the grinding table 1.

[0060] A vertically arranged baffle 231 is fixed on one side of the positioning module on the support plate 23, which is used to align the end faces of a set of pre-twisted wires 5 to be polished in advance.

[0061] The baffle 231 is located on the side of the equipment mounting base 2 near the grinding table 1, and its height is higher than the tabletop 12 of the grinding table 1. When the operator is grinding multiple pre-twisted wires 5 simultaneously, they can first place the ends of all the pre-twisted wires 5 against the baffle 231 to align the ends of all the pre-twisted wires 5 before grinding them simultaneously. This method not only enables batch operation of grinding multiple pre-twisted wires 5 simultaneously, but also ensures that the grinding amount and depth of each pre-twisted wire 5 are the same, further improving the grinding quality and efficiency.

[0062] The equipment mounting base 2 also includes a fixing rod 21, which is horizontally fixed to the two table legs 11 on the side of the grinding table 1 where the equipment mounting base 2 is mounted.

[0063] The pre-twisted wire end grinding device also includes an adjustment mechanism 6 mounted on the equipment mounting base 2. The adjustment mechanism 6 includes a handwheel 67, the handwheel shaft of which passes vertically through the fixing rod 21 and is threadedly engaged with the fixing rod 21, and the top of the handwheel shaft rests against the bottom of the mounting plate 22.

[0064] When it is necessary to adjust the vertical position of the equipment mounting base 2, loosen all the bolts passing through the elongated hole and the table leg 11, and then turn the handwheel 67 to adjust the height of the entire equipment mounting base 2. The length of the elongated hole on the mounting plate 22 is the adjustment range of the height of the equipment mounting base 2.

[0065] As attached Figure 8 and attached Figure 9 As shown, the grinding wheel 35 includes an annular mounting block 351 and a sanding belt 352 sleeved on the annular mounting block 351. That is, the sanding belt 352 and the annular mounting block 351 are detachably connected to facilitate the periodic replacement of the worn sanding belt 352. On the other hand, compared with the technical solution of sleeved sanding belt 352 on two grinding wheels 35, the present invention effectively prevents the sanding belt 352 from being misaligned with the grinding wheel 35 by directly sleeved sanding belt 352 on one grinding wheel 35.

[0066] The annular mounting block 351 is a cylindrical structure made of an elastic material, such as rubber. Multiple tension grooves 3511, with their inclined directions matching the rotation direction of the grinding wheel 35, are formed on the outer edge of the annular mounting block 351. When the grinding wheel 35 rotates at high speed, the independent tension grooves 3511 expand outward under centrifugal force, thereby tensioning the abrasive belt 352 fitted onto the annular mounting block 351.

[0067] As attached Figure 6 and attached Figure 10-15 As shown, the adjustment mechanism 6 also includes a movable bracket 61 and a position adjustment handle. The positioning module includes a positioning module body 62 and a stop 63. The positioning module body 62 is located on the movable bracket 61.

[0068] The movable support 61 has a plate-like structure and is equipped with a vertical slide rail. In this embodiment, the vertical slide rail is composed of a guide rail 611 on each side of the movable support 61 along the vertical direction. A guide groove 621 is provided on each side of the positioning module body 62 at a position corresponding to the guide rail 611. The shape and size of the guide rail 611 are adapted to the shape and size of the guide groove 621, thereby allowing the positioning module body 62 to move up and down along the guide rail 611.

[0069] The support plate 23 is provided with a transverse slide 232 to accommodate the movable bracket 61 and the positioning module body 62, so that the positioning module body 62 and the movable bracket 61 are both located diagonally below the grinding wheel 35 and can move back and forth along the transverse slide 232.

[0070] The position adjustment handle is used to adjust the position of the positioning module body 62 within the transverse slide 232 and to move the positioning module body 62 closer to or further away from the grinding wheel 35.

[0071] The position adjustment handle includes a horizontal adjustment handle 64, which passes through the support plate 23 and is threaded into the support plate 23. The end of the horizontal adjustment handle 64 facing the movable bracket 61 is locked to the movable bracket 61, so that rotating the horizontal adjustment handle 64 can drive the movable bracket 61 to reciprocate within the horizontal slide 232, thereby causing the positioning module body 62 to move synchronously with the movable bracket 61 within the horizontal slide 232.

[0072] The position adjustment handle also includes a vertical adjustment handle 65, which passes through the movable bracket 61 and is threaded into the movable bracket 61. The top of the vertical adjustment handle 65 is snapped and fixed to the positioning module body 62, so that rotating the vertical adjustment handle 65 can drive the positioning module body 62 to move back and forth along the guide rail 611 in the vertical direction.

[0073] The positioning module body 62 is also provided with a receiving groove 622 for accommodating the cutting edge 63 and a guide slope 623. The guide slope 623 is the upper surface of the positioning module body 62, and it provides support and guidance for the end of the pre-twisted wire 5. During the operation of the operator pushing the pre-twisted wire 5, the end of the pre-twisted wire 5 climbs along the guide slope 623 on the positioning module body 62 into the obtuse angle space formed by the positioning module body 62 and the cutting edge 63 and abuts against it. In actual use, the inclination angle between the guide slope 623 of the positioning module body 62 and the horizontal plane is not less than 20 degrees. In this embodiment, the inclination angle of the guide slope 623 is preferably 30 degrees.

[0074] The blade 63 is a long strip-shaped structure. The blade 63 is inserted into the receiving groove 622 on the positioning module body 62 and can move up and down along the receiving groove 622.

[0075] The top of the guard blade 63 protrudes from the positioning module body 62, and the top of the guard blade 63 has an inclined slope on the side facing the grinding wheel 35 to avoid interference between the guard blade 63 and the grinding wheel 35 when the guard blade 63 is close to the grinding wheel 35.

[0076] The position adjustment handle also includes multiple height adjustment handles 66 evenly arranged along the length of the guard blade 63. The height adjustment handles 66 pass through the movable bracket 61 and the positioning module body 62 and are threaded into the movable bracket 61 or the positioning module body 62. The top of the height adjustment handle 66 abuts against the bottom of the guard blade 63, thereby allowing the vertical height of the guard blade 63 within the receiving groove 622 to be adjusted by rotating the height adjustment handle 66.

[0077] In this embodiment, two height adjustment handles 66 are evenly arranged along the length direction of the blade 63, and the two height adjustment handles 66 together adjust the vertical height of the blade 63 in the receiving groove 622.

[0078] The surface of the cutting edge 63 that connects with the guide slope 623 is the pre-twisted wire end positioning surface 631. The pre-twisted wire end positioning surface 631 is perpendicular to the pre-twisted wire support platform. The height of the pre-twisted wire end positioning surface 631 is less than the diameter of the pre-twisted wire 5 to be ground, and the lower edge of the pre-twisted wire end positioning surface 631 is higher than the spiral diameter of the pre-twisted wire 5 to be ground.

[0079] The adjustment mechanism 6 also includes a locking bolt 68, which passes through the side wall of the movable bracket 61 and is threaded into the movable bracket 61. The end of the locking bolt 68 facing the positioning module body 62 abuts against the side wall of the positioning module body 62. After the relative position between the movable bracket 61 and the positioning module body 62 is adjusted, in order to prevent relative sliding or vibration between the movable bracket 61 and the positioning module body 62 during the grinding process, the locking bolt 68 can be tightened, thereby making the positioning module body 62 and the movable bracket 61 fit tightly together.

[0080] In practical use, to accommodate pre-twisted wires 5 of different diameters, the adjusting mechanism 6 can adjust the position of the positioning module body 62 and the stop blade 63, thereby allowing the positioning module body 62 and the stop blade 63 to be in the following two extreme working positions:

[0081] As attached Figure 16 As shown, when the diameter of the pre-twisted wire 5 is at its minimum and the diameter of the spiral of the pre-twisted wire 5 itself is also at its minimum:

[0082] Since the pre-twisted wire 5 has the smallest spiral diameter, meaning the top of the pre-twisted wire 5 has the lowest height, the height of the positioning module body 62 needs to be reduced to match the height of the top of the pre-twisted wire 5 and to ensure that the end of the pre-twisted wire 5 extending below the grinding wheel 35 is properly ground. Since the pre-twisted wire 5 also has the smallest diameter, the height of the stop 63 needs to be reduced to ensure that the end of the pre-twisted wire 5 can be locked inside the obtuse angle space formed by the stop 63 and the positioning module body 62, and that the top of the pre-twisted wire 5 can contact the grinding wheel 35.

[0083] After lowering the height of the positioning module body 62 and the stop blade 63, the distance between the end of the pre-twisted wire 5 and the grinding wheel 35 directly above it increases. To ensure that the pre-twisted wire 5 can contact the grinding wheel 35, the positioning module body 62 needs to be adjusted to the leftmost end of the adjustable range on the support plate 23. At this time, the angle α1 between the line extending upward from the pre-twisted wire end positioning surface 631 on the stop blade 63 and the intersection of the point where it intersects with the outer edge of the grinding wheel 35 and the center of the grinding wheel 35 and the horizontal direction is 60 degrees; the angle β1 between the tangent of the contact point between the pre-twisted wire 5 and the grinding wheel 35 and the guide slope 623 on the positioning module body 62 is 55 degrees.

[0084] In this embodiment, the grinding wheel 35 rotates clockwise, so that when grinding the pre-twisted wire 5, the grinding wheel 35 can press the end of the pre-twisted wire 5 into the obtuse angle space formed by the stop 63 and the guide slope 623, preventing the end of the pre-twisted wire 5 from tilting upward when it rotates axially along its own spiral axis.

[0085] As attached Figure 17 As shown, when the diameter of the pre-twisted wire 5 is at its maximum and the diameter of the spiral of the pre-twisted wire 5 itself is also at its maximum:

[0086] Since the pre-twisted wire 5 has the largest spiral diameter, meaning the top of the pre-twisted wire 5 is the highest, the height of the positioning module body 62 needs to be increased to match the height of the top of the pre-twisted wire 5 and to prevent the pre-twisted wire 5 from being over-grinded after extending under the grinding wheel 35. Since the pre-twisted wire 5 also has the largest diameter, the height of the stop 63 needs to be increased to ensure that the end of the pre-twisted wire 5 can be locked inside the obtuse angle space formed by the stop 63 and the positioning module body 62.

[0087] Before raising the height of the positioning module body 62 and the stop blade 63, to avoid interference between the stop blade 63, the positioning module body 62, and the grinding wheel 35, the positioning module body 62 needs to be adjusted to the rightmost end of the adjustable range on the support plate 23. At this time, the angle α2 between the line connecting the intersection of the upward extension of the pre-twisted wire end positioning surface 631 on the stop blade 63 and the outer edge of the grinding wheel 35 to the center of the grinding wheel 35 and the horizontal direction is 30 degrees; the angle β2 between the tangent of the contact point between the pre-twisted wire 5 and the grinding wheel 35 and the guide slope 623 on the positioning module body 62 is 85 degrees.

[0088] In summary, when grinding pre-twisted wires 5 with different diameters and spiral diameters, the positions of the positioning module body 62 and the stop blade 63 need to be adjusted accordingly. During the adjustment process, the angle α between the line connecting the intersection of the upward extension of the pre-twisted wire end positioning surface 631 on the stop blade 63 and the outer edge of the grinding wheel 35 to the center of the grinding wheel 35 and the horizontal direction is adjusted within a range of 30 degrees to 60 degrees; the angle β between the tangent of the contact point between the pre-twisted wire 5 and the grinding wheel 35 and the guide slope 623 on the positioning module body 62 is adjusted within a range of 55 degrees to 85 degrees.

[0089] The implementation principle of the above embodiments is as follows:

[0090] When grinding the pre-twisted wire 5, first adjust the positions of the positioning module body 62 and the stop 63 according to the diameter and spiral diameter of the pre-twisted wire 5. After adjusting the positions of the positioning module body 62 and the stop 63 by rotating the horizontal adjustment handle 64, the vertical adjustment handle 65, and the height adjustment handle 66, tighten the locking bolt 68. Place multiple pre-twisted wires 5 with the same diameter and spiral diameter on the grinding table 1 at the same time. While pressing all the pre-twisted wires 5 on the grinding table 1, push all the pre-twisted wires 5 and press the ends of all the pre-twisted wires 5 against the baffle 231 so that the ends of all the pre-twisted wires 5 are aligned. Then, tilt and push all the pre-twisted wires 5 toward the grinding wheel 35. Because the portion of the pre-twisted wire 5 furthest from its end is pressed onto the grinding table 1 by the operator, the end of the pre-twisted wire 5, under the action of its own elasticity and the push of the operator, will rise along the guide slope 623 on the positioning module body 62 until the end rests against the obtuse angle space formed by the stop 63 and the positioning module body 62. Then, during the grinding of the pre-twisted wire 5 by the grinding wheel 35, the operator will press the pre-twisted wire 5 firmly while causing it to rotate axially along its own spiral axis. Because the grinding wheel 35 presses the end of the pre-twisted wire 5 into the obtuse angle space formed by the stop 63 and the positioning module body 62, it prevents the end from tilting upwards, thus ensuring that the end of the pre-twisted wire 5 is ground sufficiently and evenly.

[0091] It should be noted that, although the preferred embodiments of the present invention have been described, the positioning module including the positioning module body 62 and the stop 63 in the present invention can also be integrally manufactured. According to the diameter of the pre-twisted wire 5 and the diameter of the spiral of the pre-twisted wire 5, the positioning module body 62 and the stop 63 are adjusted according to the above preferred embodiments to match positioning modules of different sizes. When operating a group of pre-twisted wires 5, only the appropriate positioning module needs to be replaced to perform batch operations on the pre-twisted wires 5, and the grinding of the ends of the entire group of pre-twisted wires 5 can be completed quickly.

[0092] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include these modifications and modifications.

Claims

1. A pre-twisted wire end grinding device, characterized in that, The device includes a workbench and a power mechanism (3) mounted on the workbench, a positioning module and a pre-twisted wire support platform set on the workbench, wherein the positioning module is located between the power mechanism (3) and the pre-twisted wire support platform; the power mechanism (3) includes a drive device and a grinding wheel (35), the drive device drives the grinding wheel (35) to rotate; the positioning module is located diagonally below the grinding wheel (35), the positioning module is provided with a pre-twisted wire end positioning surface (631) and a guide slope (623) that connects to the lower edge of the pre-twisted wire end positioning surface (631) and extends diagonally downward to connect with the pre-twisted wire support platform, and a baffle (231) is provided on one side of the positioning module on the workbench for pre-aligning the end faces of a set of pre-twisted wires (5) to be ground. The pre-twisted wire end positioning surface (631) is formed by a plane perpendicular to the pre-twisted wire support platform, and the height of the pre-twisted wire end positioning surface (631) is less than the diameter of the pre-twisted wire (5) to be ground, and the lower edge height of the pre-twisted wire end positioning surface (631) is higher than the spiral diameter of the pre-twisted wire (5) to be ground. The workbench is provided with an adjustment mechanism (6) for adjusting and fixing the position of the positioning module relative to the grinding wheel (35) in the vertical and horizontal directions; the positioning module includes a positioning module body (62) and a stop (63), the positioning module body (62) is provided with a guide slope (623) and a receiving groove (622), the stop (63) is received in the receiving groove (622) and can move up and down along the receiving groove (622), the surface of the stop (63) that is in contact with the guide slope (623) forms the pre-twisted wire end positioning surface (631), and a height adjustment handle (66) for adjusting and fixing the vertical position of the stop (63) is provided between the positioning module body (62) and the stop (63).

2. The pre-twisted wire end grinding device according to claim 1, characterized in that, The worktable is provided with a transverse slide (232) for accommodating the positioning module, and the adjustment mechanism (6) is provided with a position adjustment handle. The position adjustment handle allows the positioning module to slide within the transverse slide (232) to move away from or closer to the grinding wheel (35).

3. The pre-twisted wire end grinding device according to claim 2, characterized in that, The adjustment mechanism (6) includes a movable support (61), on which a vertical slide is provided. The positioning module is disposed in the vertical slide on the movable support (61) and can move up and down along the vertical slide. A horizontal slide (232) is provided on the worktable. The movable support (61) is disposed in the horizontal slide (232) and can move along the horizontal slide (232). The position adjustment handle includes a horizontal adjustment handle (64) and a vertical adjustment handle (65). The horizontal adjustment handle (64) is used to adjust the horizontal position of the movable support (61), and the vertical adjustment handle (65) is used to adjust the vertical position of the positioning module.

4. The pre-twisted wire end grinding device according to claim 1, characterized in that, The angle α between the line connecting the intersection of the upward extension of the pre-twisted wire end positioning surface (631) on the guard blade (63) and the outer edge of the grinding wheel (35) to the center of the grinding wheel (35) and the horizontal direction is 30 to 60 degrees; the angle β between the tangent of the contact point between the end of the pre-twisted wire (5) to be ground and the grinding wheel (35) and the guide slope (623) is 55 to 85 degrees.

5. The pre-twisted wire end grinding device according to claim 1, characterized in that, The grinding wheel (35) includes an annular mounting block (351) and a sanding belt (352), the sanding belt (352) being fitted onto the annular mounting block (351).

6. The pre-twisted wire end grinding device according to claim 5, characterized in that, The annular mounting block (351) is made of elastic material. Multiple tensioning grooves (3511) with an inclined direction adapted to the rotation direction of the grinding wheel (35) are provided on the outer circumference of the annular mounting block (351). The tensioning grooves (3511) tension the sanding belt (352) when the grinding wheel (35) rotates.

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