Automatic string winding device

Abstract

The utility model provides an automatic string winding device, which relates to the field of string manufacturing and comprises a threaded rod, a turntable, a motor and a winding displacement device. A driving gear is mounted on a motor shaft of the motor, and a transmission gear is in meshed connection with the outer side surface of the driving gear; the threaded rod is rotationally connected into the through hole of the vertical plate of the table plate frame; a wire winding gear is connected to the rotating disc in a welding manner; the winding displacement device comprises a displacement frame, a guide pulley, a guide rod, an adjusting knob, a supporting pulley and a threaded adjusting rod; the displacement frame is rotationally connected with the supporting pulley, and the displacement frame is rotationally connected with the guide pulley; an adjusting knob is mounted at the rear end of the threaded adjusting rod; through the arrangement of the winding displacement device, the threaded rod, the driving gear and the transmission gear, automatic displacement winding of the string core is achieved, traditional manual pressing type string core tensioning is abandoned, the string core is tensioned and supported more stably, and the problems that traditional manual string winding operation is poor in safety and string core tensioning is not stable are solved.

Description

Technical Field

[0001] The utility model belongs to the field of piano string manufacturing, and more specifically, particularly relates to an automatic piano string winding device. Background Art

[0002] The strings are an important component for stimulating sound on string instruments. The strings are usually tightened with a certain tension, and their vibrations are stimulated by friction, striking and other techniques to produce moving music. At present, the strings are generally divided into plain strings and wound strings. Wound strings are formed by wrapping metal filaments made of phosphor bronze around the outer side of the string core. When wrapping the phosphor bronze around the string core, a winding machine is usually used to drive the string core to rotate at a high speed. Then, a string maker wears a glove on one hand and pinches the phosphor bronze wire. The phosphor bronze wire slides through the glove at high speed during winding, and the string maker uses the other hand to hold the phosphor bronze wire. The string core is pressed with one hand holding the clamp to tension the string core. After the phosphor bronze wire is completely wrapped around the outside of the string core, the string maker manually cuts it off with the clamp. It can be seen that manual participation is required for both pinching the phosphor bronze wire and supporting and tensioning the string core. When pinching the phosphor bronze wire, once the gloves are damaged, the high-speed sliding phosphor bronze wire can easily scratch the hands of the string maker. When supporting and tensioning the string core, the tension of the string core will continue to change because the maker has to move synchronously with the winding position. The string core is extremely unstable, causing the phosphor bronze wire to be roughly wound around the outside of the string core. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an automatic string winding device to solve the problems of poor safety in traditional manual string winding operation and unstable string core tensioning.

[0004] The utility model provides an automatic string winding device, including a table frame; the bottom of the table frame is welded to a supporting leg frame, the upper side of the table frame is provided with two sets of vertical plates, the inner side surfaces of the vertical plates are welded to a guide support rod, the left vertical plate of the table frame is provided with two sets of through holes, and the right vertical plate of the table frame is provided with three sets of through holes; it also includes a threaded rod, an electric motor, a turntable and a wire winding displacement device; the motor is connected to the vertical plate of the table frame by bolts, a driving gear is installed on the motor shaft of the electric motor, and the outer side surface of the driving gear is meshed and connected to the transmission gear; the threaded rod is rotatably connected to the through hole of the vertical plate of the table frame; the number of the turntables is two groups, each group of turntables is welded and connected to a hook, a string core is mounted on the hook, and a wire winding gear is welded and connected to the turntable, and the turntable is rotatably connected to the through hole of the vertical plate of the table frame; the wire winding displacement device includes a wire hoop, an electric telescopic cylinder, a fixing plate, a displacement frame, a bracket, a bottom plate, a cutter, a guide Pulley, cutting block, guide rod, sliding frame, tensioning pulley, support block, adjusting knob, support pulley and threaded adjusting rod; the wire hoop is rotatably connected to the displacement frame, the front side of the displacement frame is installed with a bracket by bolts, the upper side of the bracket is installed with a fixing plate by bolts, the upper side of the fixing plate is connected with an electric telescopic cylinder by bolts, and the telescopic rod of the electric telescopic cylinder is connected to the upper side of the cutting block by bolts; the front side of the cutting block is welded and connected with a cutter; the rear side of the base plate is welded and connected to the front side of the displacement frame, the front side of the base plate is welded and connected with a cutter, the upper side of the base plate is welded and connected with a guide rod, and the top of the guide rod is welded and connected to the lower side of the bracket; the upper side of the displacement frame is rotatably connected with a supporting pulley, the front side of the displacement frame is rotatably connected with a guide pulley, and the right side of the displacement frame is welded and connected with a supporting block; the front end of the sliding frame is rotatably connected with a tensioning pulley; an adjusting knob is installed at the rear end of the threaded adjusting rod.

[0005] In at least some embodiments, the displacement frame is provided with a through hole and a threaded through hole structure extending left and right, the guide support rod is inserted into the through hole of the displacement frame, and the threaded rod is connected to the threaded through hole of the displacement frame by threaded engagement.

[0006] In at least some embodiments, the sliding frame is an H-shaped frame structure, and the front end of the H-shaped frame of the sliding frame is provided with two groups of upper and lower opposite through holes, the upper and lower ends of the tensioning pulley are rotatably connected in the through holes of the sliding frame, and the center part of the H-shaped frame of the sliding frame is provided with a threaded through hole structure, and the outer threaded surface of the threaded adjustment rod is meshed and connected in the threaded through hole of the sliding frame.

[0007] In at least some embodiments, the upper side of the cut block is provided with two groups of bilaterally symmetrical through-hole structures, and the guide rods are inserted into the through-holes of the cut block.

[0008] In at least some embodiments, the support block is a rectangular structure, and the rectangular structure of the support block is embedded in the inner side of the H-shaped frame structure of the sliding frame. The upper side and the lower side of the support block are tightly fitted on the H-shaped frame structure of the sliding frame, and a through hole structure that passes through the front and back is provided at the center position of the front side of the support block.

[0009] In at least some embodiments, the number of the transmission gears is two groups, each group of transmission gears is welded and connected to the left side and the right side of the threaded rod respectively, and the winding gear is meshed and connected with the transmission gear.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, a threaded meshing transmission mechanism is formed by driving gears, transmission gears and winding gears in cooperation with threaded rods at the threaded through holes of the displacement frame, so that the winding displacement device can perform directional translational movement left and right along the guide support rod during the high-speed rotation of the string core. The support pulley and guide pulley of the winding displacement device are used to guide and convey the phosphor bronze wire, thereby realizing the automatic displacement and winding of the string core and avoiding accidental scratches on the hands caused by manual pinching of the phosphor bronze wire.

[0012] 2. In the utility model, the adjusting knob drives the threaded adjusting rod and the H-shaped sliding frame threaded passage to form a threaded meshing transmission structure, so that the sliding frame can be moved forward and backward along the supporting block of the rectangular structure, so that the tensioning pulley at the front end of the sliding frame is close to the surface of the string core, thereby changing the tensioning degree of the string core, abandoning the traditional manual pressing type of string core tensioning, making the string core tensioning support more stable, and the phosphor bronze wire is more regularly wound on the string core, thereby improving the production quality of the strings.

[0013] 3. In the utility model, an electric telescopic cylinder, a cutter and a cutting block are provided, and the electric telescopic cylinder is used to drive the cutting block to slide along the guide rod in a directional manner, so that the cutter at the front end of the cutting block cooperates with the cutter at the front end of the bottom plate to complete the automatic cutting of the phosphor bronze wire after it is wrapped around the outside of the string core, abandoning the manual cutting method, making the cutting of the phosphor bronze wire faster and more convenient, and improving the efficiency of string processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a front view structural schematic diagram of the utility model.

[0016] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0017] Figure 4 The utility model Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0018] Figure 5 It is a structural schematic diagram of the wire winding displacement device of the utility model.

[0019] Figure 6 It is a left-side structural schematic diagram of the wire winding displacement device of the utility model.

[0020] Figure 7 It is a right view structural schematic diagram of the wire winding displacement device of the utility model.

[0021] Figure 8 It is a rear view structural schematic diagram of the wire winding displacement device of the utility model.

[0022] Fig. 9 It is a side structural schematic diagram of the wire winding displacement device of the utility model.

[0023] Reference numerals:

[0024] 1. Table frame;

[0025] 2. Guide support rod;

[0026] 3. Threaded rod;

[0027] 4. Winding gear;

[0028] 5. Support leg frame;

[0029] 6. Electric motor;

[0030] 7. Driving gear;

[0031] 8. Transmission gear;

[0032] 9. Turntable;

[0033] 10. Hook;

[0034] 11. String core;

[0035] 12. Wire winding displacement device; 1201. Wire clamp; 1202. Electric telescopic cylinder; 1203. Fixed plate; 1204. Displacement frame; 1205. Bracket; 1206. Bottom plate; 1207. Cutter; 1208. Guide pulley; 1209. Cutting block; 1210. Guide rod; 1211. Sliding frame; 1212. Tensioning pulley; 1213. Support block; 1214. Adjustment knob; 1215. Support pulley; 1216. Threaded adjustment rod. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0037] like Figure 1-Figure 9As shown, the utility model provides an automatic string winding device, including a table frame 1; a support leg frame 5 is welded to the bottom of the table frame 1, two sets of vertical plates are arranged on the upper side of the table frame 1, and the inner side of the vertical plates is welded to the guide support rod 2, the left vertical plate of the table frame 1 is provided with two sets of through holes, and the right vertical plate of the table frame 1 is provided with three sets of through holes; it also includes a threaded rod 3, an electric motor 6, a turntable 9 and a winding displacement device 12; the electric motor 6 is connected to the vertical plate of the table frame 1 by bolts, and a driving gear 7 is installed on the motor shaft of the electric motor 6, and a transmission gear 8 is meshed and connected to the outer side of the driving gear 7; the threaded rod 3 rotates The turntable 9 is connected to the through hole of the vertical plate of the table frame 1; there are two groups of turntables 9, each group of turntables 9 is welded with a hook 10, the hook 10 is mounted with a string core 11, the turntable 9 is welded with a winding gear 4, and the turntable 9 is rotatably connected to the through hole of the vertical plate of the table frame 1; the winding displacement device 12 includes a wire hoop 1201, an electric telescopic cylinder 1202, a fixing plate 1203, a displacement frame 1204, a bracket 1205, a bottom plate 1206, a cutter 1207, a guide pulley 1208, a cutting block 1209, a guide rod 1210, a sliding frame 1211, a tensioning pulley 1212, and a support block 121 3. Adjustment knob 1214, support pulley 1215 and threaded adjustment rod 1216; wire hoop 1201 is rotatably connected to displacement frame 1204, bracket 1205 is bolted to the front side of displacement frame 1204, fixing plate 1203 is bolted to the upper side of fixing plate 1203, electric telescopic cylinder 1202 is bolted to the upper side of cutting block 1209, telescopic rod of electric telescopic cylinder 1202 is bolted to the upper side of cutting block 1209; cutting knife 1207 is welded to the front side of cutting block 1209; the rear side of bottom plate 1206 is welded to displacement frame 1 The front side of the base plate 1206 is welded with a cutter 1207, the upper side of the base plate 1206 is welded with a guide rod 1210, and the top of the guide rod 1210 is welded to the lower side of the bracket 1205; the upper side of the displacement frame 1204 is rotatably connected to a support pulley 1215, the front side of the displacement frame 1204 is rotatably connected to a guide pulley 1208, and the right side of the displacement frame 1204 is welded with a support block 1213; the front end of the sliding frame 1211 is rotatably connected to a tensioning pulley 1212; the rear end of the threaded adjustment rod 1216 is provided with an adjustment knob 1214.

[0038] When the utility model is winding the strings, the left and right ends of the string core 11 are respectively hung on the hooks 10 welded to the turntable 9, and then the phosphor bronze wire wound on the outer side of the wire hoop 1201 is manually pulled out from the bottom of the wire hoop 1201, so that the phosphor bronze wire is sequentially attached to the upper side of the support pulley 1215 and the rear side of the guide pulley 1208, and then the phosphor bronze wire is tied to the leftmost end of the string core 11, and the adjusting knob 1214 is manually turned, and the adjusting knob 1214 drives the threaded adjusting rod 1201 to rotate. 16 rotates, and since the threaded adjustment rod 1216 is meshed and connected in the threaded through hole of the sliding frame 1211, the threaded adjustment rod 1216 drives the sliding frame 1211 to slide forward along the support block 1213 of the rectangular structure, and the tensioning pulley 1212 is attached to the outer side of the string core 11 and tensions and supports the string core 11. After the string core 11 and the phosphor bronze wire are installed, the motor 6 drives the driving gear 7 to rotate. Since the driving gear 7 is meshed with the transmission gear 8 on the right side, the driving gear 7 drives the threaded rod 3 welded to the transmission gear 8 on the right side to rotate. Since the threaded rod 3 is meshed with the threaded through hole of the displacement frame 1204, the threaded rod 3 drives the displacement frame 1204 to move from left to right along the guide support rod 2. At this time, the threaded rod 3 drives the transmission gear 8 on the left side to rotate. Since the transmission gear 8 is meshed with the winding gear 4, the two sets of transmission gears 8 respectively drive the two sets of winding gears 4 to rotate, and the two sets of winding gears 4 respectively drive the two sets of turntables 9 to rotate synchronously in the same direction, so that the string core 11 rotates with the two sets of turntables 9 rotates at high speed. During the rotation of the string core 11, the phosphor bronze wire tied to the left end of the string core 11 is wound around the outer side of the string core 11 from left to right to carry out the string winding work. When the phosphor bronze wire is wound around the outer side of the string core 11, the telescopic rod of the electric telescopic cylinder 1202 drives the cutting block 1209 to move vertically downward along the guide rod 1210, and the cutter 1207 welded to the front side of the cutting block 1209 and the cutter 1207 on the lower side of the bottom plate 1206 close to each other to complete the cutting work of the phosphor bronze wire.

[0039] In the disclosed embodiment, the displacement frame 1204 is provided with a through hole and a threaded through hole structure that penetrates to the left and right, the guide support rod 2 is inserted into the through hole of the displacement frame 1204, and the threaded rod 3 is connected to the threaded through hole of the displacement frame 1204 by threaded engagement, so that the threaded rod 3 can drive the displacement frame 1204 to slide left and right along the guide support rod 2 on the upper side of the table frame 1, completing the automatic pulling movement when the strings are wound, so that the copper winding can be stably wound on the outer side of the string core 11.

[0040] In the disclosed embodiment, the sliding frame 1211 is an H-shaped frame structure, and the front end of the H-shaped frame of the sliding frame 1211 is provided with two groups of upper and lower opposite through holes, and the upper and lower ends of the tensioning pulley 1212 are rotatably connected in the through holes of the sliding frame 1211, so that when the tensioning pulley 1212 slides close to the string core 11, the tensioning pulley 1212 rotates to reduce the sliding friction on the string core 11, and the central part of the H-shaped frame of the sliding frame 1211 is provided with a threaded through hole structure, and the outer threaded surface of the threaded adjustment rod 1216 is meshedly connected in the threaded through hole of the sliding frame 1211, so that the threaded adjustment rod 1216 drives the sliding frame 1211 to move forward and backward, thereby changing the degree of support and tension of the tensioning pulley 1212 on the string core 11.

[0041] In the disclosed embodiment, the upper side of the cutting block 1209 is provided with two groups of left-right symmetrical through-hole structures, and the guide rod 1210 is inserted into the through-hole of the cutting block 1209, so that the electric telescopic cylinder 1202 drives the cutting block 1209 to slide in a directional manner along the guide rod 1210, ensuring that the cutting knife 1207 on the front side of the cutting block 1209 cooperates with the cutting knife 1207 on the front side of the bottom plate 1206 to close in opposite directions, thereby stably cutting the bronze winding.

[0042] In the disclosed embodiment, the support block 1213 is a rectangular structure, and the rectangular structure of the support block 1213 is embedded in the inner side of the H-shaped frame structure of the sliding frame 1211. The upper side and the lower side of the support block 1213 are tightly fitted on the H-shaped frame structure of the sliding frame 1211. A through hole structure that passes through the front and back is provided at the center position of the front side of the support block 1213. The outer side of the threaded adjustment rod 1216 has a non-threaded surface and is rotatably connected to the through hole of the support block 1213. The support block 1213 supports the sliding frame 1211 to move stably.

[0043] In the disclosed embodiment, there are two groups of transmission gears 8, and each group of transmission gears 8 is welded and connected to the left and right sides of the threaded rod 3 respectively. The winding gear 4 is meshed and connected with the transmission gear 8, so that when the transmission gear 8 drives the threaded rod 3 to rotate, it synchronously drives the two groups of turntables 9 to rotate, so that the turntable 9 drives the string core 11 to rotate, thereby completing the winding work of the string core 11.

[0044] The installation, connection or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc., and the specific structures, models and coefficient indicators of all its components are its own technology, and can be implemented as long as it can achieve its beneficial effects. The above-mentioned motor 6, string core 11, and electric telescopic cylinder 1202 are all common components on the market. When purchased and used, they can be used by simply connecting them according to the instruction manual purchased together, so they will not be repeated here.

[0045] The technical solution of the present invention is not limited to the scope of the embodiments of the present invention, and the technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. An automatic string winding device, comprising a table frame; a support leg frame is welded to the bottom of the table frame, two sets of vertical plates are arranged on the upper side of the table frame, a guide support rod is welded to the inner side of the vertical plate, two sets of through holes are arranged on the left vertical plate of the table frame, and three sets of through holes are arranged on the right vertical plate of the table frame; the characteristics are: It also includes a threaded rod, an electric motor, a turntable and a wire winding displacement device; the electric motor is connected to the vertical plate of the table frame by bolts, and a driving gear is installed on the motor shaft of the electric motor, and the outer side of the driving gear is meshed and connected with a transmission gear; the threaded rod is rotatably connected to the through hole of the vertical plate of the table frame; the number of the turntables is two groups, and each group of turntables is welded with a hook, and a string core is mounted on the hook, and a wire winding gear is welded on the turntable, and the turntable is rotatably connected to the through hole of the vertical plate of the table frame; the wire winding displacement device includes a wire hoop, an electric telescopic cylinder, a fixed plate, a displacement frame, a bracket, a bottom plate, a cutter, a guide pulley, a cutting block, a guide rod, a sliding frame, a tensioning pulley, a support block, an adjustment knob, a support pulley and a threaded adjustment rod; the wire hoop is rotatably connected to the displacement frame, A bracket is installed on the front side of the displacement frame by bolts, a fixing plate is installed on the upper side of the bracket by bolts, an electric telescopic cylinder is connected to the upper side of the fixing plate by bolts, and the telescopic rod of the electric telescopic cylinder is connected to the upper side of the cutting block by bolts; a cutter is welded to the front side of the cutting block; the rear side of the base plate is welded to the front side of the displacement frame, the front side of the base plate is welded to the cutter, the upper side of the base plate is welded to the guide rod, and the top of the guide rod is welded to the lower side of the bracket; the upper side of the displacement frame is rotatably connected to a support pulley, the front side of the displacement frame is rotatably connected to a guide pulley, and the right side of the displacement frame is welded to a support block; the front end of the sliding frame is rotatably connected to a tensioning pulley; an adjusting knob is installed at the rear end of the threaded adjustment rod.

2. The automatic string winding device according to claim 1, characterized in that: The displacement frame is provided with a through hole and a threaded through hole structure which penetrate left and right, the guide support rod is inserted into the through hole of the displacement frame, and the threaded rod is connected to the threaded through hole of the displacement frame by threaded engagement.

3. The automatic string winding device according to claim 1, characterized in that: The sliding frame is an H-shaped frame structure, and the front end of the H-shaped frame of the sliding frame is provided with two groups of upper and lower opposite through holes, the upper and lower ends of the tensioning pulley are rotatably connected in the through holes of the sliding frame, and the center of the H-shaped frame of the sliding frame is provided with a threaded through hole structure, and the outer threaded surface of the threaded adjustment rod is meshed and connected in the threaded through hole of the sliding frame.

4. The automatic string winding device according to claim 1, characterized in that: The upper side surface of the cutting block is provided with two groups of left-right symmetrical through-hole structures, and the guide rods are inserted into the through-holes of the cutting block.

5. The automatic string winding device according to claim 1, characterized in that: The support block is a rectangular structure, which is embedded in the inner side of the H-shaped frame structure of the sliding frame. The upper and lower sides of the support block are tightly fitted on the H-shaped frame structure of the sliding frame. A through hole structure that passes through the front and back is provided at the center of the front side of the support block.

6. The automatic string winding device according to claim 1, characterized in that: There are two groups of transmission gears, each group of transmission gears is welded and connected to the left side and the right side of the threaded rod respectively, and the winding gear is meshed and connected with the transmission gear.

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