A quantitative numerical control string winding machine

Abstract

The invention relates to the technical field of musical string processing accessory devices, and in particular to a quantitative numerical control string winding machine; the machine comprises a body frame, a left string core driving mechanism, a right string core driving mechanism and a string core tensioning mechanism, the string core tensioning mechanism comprises a tensioning slide and a first servo motor, the output end of the first servo motor is provided with a driving belt for driving the tensioning slide to move laterally, the right string core driving is connected to a tension sensor, a transverse sliding mechanism is provided on the top of the body frame, and an external winding wire releasing mechanism, a wire stabilizing mechanism and a grinding mechanism are installed on the transverse sliding mechanism, the wire stabilizing mechanism comprises a first telescopic cylinder, a first mounting frame and a first guide wheel, and the grinding mechanism comprises a second telescopic cylinder, a second mounting frame, a clamping manipulator, a second servo motor and a grinding block; the machine automatically performs grinding processing according to the musical string process setting, and stably transmits the winding wire to the string core through a damping pulley to ensure the uniformity and tightness of the winding wire, thereby ensuring the quality of the musical string and improving the practicality.

Description

Technical Field

[0001] The invention relates to the technical field of string processing attachments, and in particular to a quantitative numerically controlled string winding machine. Background Art

[0002] It is well known that musical strings, such as pipa or violin strings, generally include a steel wire core (hereinafter referred to as the string core) and a winding wire wrapped around the outside of the string core. When producing the strings, the two ends of the string core need to be tensioned and fixed to form a certain axial pre-tension, and then the winding wire is wrapped around the outside of the string core along the length direction of the string core. Depending on the needs, the winding wire may need to be formed by multiple winding processes of different types of silk threads (metal and / or non-metal). During winding, the two end fixings of the string core are rotated to make it rotate at a certain speed, and then the winding wire is wrapped around the outside of the string core.

[0003] The traditional string winding machine fixes the two ends of the string core, manually winds the winding wire around one end of the string core and fixes it, and then uses the motors at both ends to drive the string core to rotate synchronously at high speed, while moving the winding wire at the same time, so that the winding wire is wound around the string core. The working efficiency is low, and the pre-tension of the winding wire and the pulling force of the winding wire cannot be controlled manually to be constant, resulting in different pre-tensions of different strings or different positions of the same string, affecting the quality of the strings.

[0004] The existing Chinese invention patent with patent number 201710446918.2 provides a quantitative automatic string winding machine, including a frame, a light bar, a translation motor, a left-rotating motor, a right-rotating motor, a translation platform, an air pressure regulating unit, a cylinder, a motor seat, a tension sensor, and a controller; when winding the wire, the left and right rotating motors drive the strings to be processed to rotate at a uniform speed, and at the same time, the translation platform drives the winding wire to move at a uniform speed, and the winding wire is evenly wound on the strings to be processed; the servo motor is used to adjust the position of the left-rotating motor on the light bar to control the axial pre-tension of the string core; the tension sensor is used to detect the winding tension; the controller is used to control the operation of the string machine. The beneficial effect of the present invention is that the quantitative string winding machine provided by the present invention can detect and adjust the winding tension of the winding and the axial pre-tension of the string core in real time, thereby ensuring the consistency of the tension of the strings during the processing process, thereby improving the quality of the product and simplifying the operation process. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides a quantitative CNC string winding machine that can automatically achieve string tensioning, quantify winding wire tension and winding angle, and automatically perform uniform polishing after string winding, thereby improving the degree of automation, and can stably deliver the winding wire to the string core to ensure that the string diameter is uniform and the tightness is consistent, thereby ensuring the quality of the strings and improving practicality.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quantitative numerical control string winding machine, comprising a body frame, a left string core driving mechanism and a right string core driving mechanism; further comprising a string core tensioning mechanism, the string core tensioning mechanism comprising a tensioning slide and a first servo motor, the tensioning slide being slidably mounted on the body frame through a linear guide rail, the left string core driving mechanism being mounted on the tensioning slide, the first servo motor being mounted on the body frame, and a driving belt for driving the tensioning slide to move laterally being mounted at the output end of the first servo motor, a tension sensor being mounted on the right string core driving mechanism, and the body A transverse slide mechanism is provided on the top of the frame, and an external winding wire release mechanism, a wire stabilizing mechanism and a grinding mechanism are installed on the transverse slide mechanism. The wire stabilizing mechanism includes a first telescopic cylinder, a first mounting frame is provided at the front output end of the first telescopic cylinder, and a first wire wheel is provided on the first mounting frame. The grinding mechanism includes a second telescopic cylinder, a second mounting frame is provided at the front output end of the second telescopic cylinder, a clamping manipulator and a second servo motor for opening and closing the clamping manipulator are provided on the second mounting frame, and a grinding block is installed at the clamping end of the clamping manipulator.

[0009] Preferably, the left string core driving mechanism and the right string core driving mechanism are arranged opposite to each other on the left and right, and both the left string core driving mechanism and the right string core driving mechanism include a third servo motor, a driven shaft and a transmission belt, a string hook and a driven pulley are respectively provided at both ends of the driven shaft, a driving pulley is provided at the output end of the third servo motor, and the driving pulley and the driven pulley are connected through the transmission belt.

[0010] Preferably, the external winding wire releasing mechanism comprises, from back to front, a second wire wheel, a wire winding non-return mechanism, a damping wheel set, a clamping cylinder and a third wire wheel, and a clamping plate for clamping the wire winding is provided at the bottom output end of the clamping cylinder.

[0011] Preferably, the wire winding non-return mechanism comprises a non-return cylinder and a base plate, wherein the non-return cylinder is installed above the base plate, and friction blocks are provided at the bottom output end of the non-return cylinder and the top end of the base plate.

[0012] Preferably, a left slide plate and a right slide plate are slidably provided on the left frame and the right frame of the second mounting frame respectively, and an upper clamp plate and a lower clamp plate are installed at the front end of the left slide plate and the right slide plate respectively, the grinding block is installed on the opposite surfaces of the upper clamp plate and the lower clamp plate, the right end of the left slide plate and the left end of the right slide plate are provided with racks, and the output end of the second servo motor is provided with a driving gear, and the driving gear is meshed with the two sets of the racks.

[0013] Preferably, a cylinder bracket is installed at the top end of the transverse slide, the first telescopic cylinder is installed on the cylinder bracket, and a guide column for limiting the first mounting frame is installed on the cylinder bracket.

[0014] Preferably, a touch screen for uniformly controlling the left string core driving mechanism, the right string core driving mechanism, the wire stabilizing mechanism, the grinding mechanism and the string core tensioning mechanism is installed on the fuselage frame.

[0015] Preferably, the external winding wire-releasing mechanism can release at least one group of winding wires.

[0016] Preferably, the damping wheel set is a plurality of damping wheels whose damping force can be manually adjusted.

[0017] Preferably, the transverse slide mechanism includes a transverse slide installed on the fuselage frame, a transverse slide plate slidably installed on the transverse slide, and a fourth servo motor driving the transverse slide plate to slide laterally, and a string diameter monitoring device is installed on the polishing block.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a quantitative numerical control string winding machine having the following

[0020] Beneficial effects:

[0021] 1. The quantitative CNC string winding machine manually hangs the two ends of the string cores of different wire diameters on the hooks of the left and right string core driving mechanisms respectively, and then controls the axial tensioning force of the string core through the cooperation of the string core tensioning mechanism and the tension sensor according to the program values ​​set for different products. The string core tensioning mechanism uses a first servo motor to drive the tensioning slide to move horizontally through the driving belt to complete the tensioning of the string core, which can accurately control the tensioning force of the string core;

[0022] 2. The quantitative numerical control string winding machine releases the wire through the external winding wire releasing mechanism. The first mounting frame is pushed forward to the rear of the string core through the first telescopic cylinder. The first wire wheel is behind the string core. The wire winding passes around the first wire wheel and then is wound on the string core. The distance between the first wire wheel and the string core is shortened, so that the wire winding can be tightly and evenly wound on the string core, thereby improving the quality of the strings and improving the practicality.

[0023] 3. After the quantitative CNC string winding machine winds the silk thread, the second mounting frame is pushed forward to the rear of the string core by the second telescopic cylinder, and the clamping manipulator is driven by the second servo motor to make the polishing block clamp the string core, and then slides horizontally through the transverse slide mechanism to automatically complete the string core smoothness and string diameter polishing according to the set program, and the string diameter monitoring equipment is used to effectively monitor the string pitch and timbre requirements of different musical instrument products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the top view of the string core tensioning mechanism of the present invention;

[0027] Figure 4 It is a front view structural schematic diagram of the left string core driving mechanism of the present invention;

[0028] Figure 5 It is a side view structural schematic diagram of the left string core driving mechanism of the present invention;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the wire stabilizing mechanism of the present invention;

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the grinding mechanism of the present invention;

[0031] Figure 8 It is a three-dimensional structural schematic diagram of the outer winding wire releasing mechanism of the present invention;

[0032] Markings in the attached drawings: 1, fuselage frame; 2, left string core driving mechanism; 3, right string core driving mechanism; 4, string core tensioning mechanism; 5, tensioning slide; 6, first servo motor; 7, linear guide rail; 8, driving belt; 9, tension sensor; 10, outer winding wire release mechanism; 11, wire stabilizing mechanism; 12, grinding mechanism; 13, first telescopic cylinder; 14, first mounting frame; 15, first wire wheel; 16, second telescopic cylinder; 17, second mounting frame; 18, second servo motor; 19, grinding block; 20, third servo motor; 21, driven shaft; 22, transmission belt; 23, string hook; 24, driven pulley; 25, driving pulley; 26, second wire pulley; 27, damping wheel set; 28, clamping cylinder; 29, third wire pulley; 30, clamping plate; 31, check cylinder; 32, bottom plate; 33, friction block; 34, left slide; 35, upper clamping plate; 36, rack; 37, driving gear; 38, cylinder bracket; 39, guide column; 40, touch screen; 41, transverse slide; 42, transverse slide; 43, fourth servo motor; 44, string diameter monitoring equipment. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-8 The present invention provides a quantitative numerical control string winding machine, comprising a body frame 1, a left string core driving mechanism 2 and a right string core driving mechanism 3; and further comprising a string core tensioning mechanism 4, wherein the string core tensioning mechanism 4 comprises a tensioning slide 5 and a first servo motor 6, wherein the tensioning slide 5 is slidably mounted on the body frame 1 through a linear guide rail 7, wherein the left string core driving mechanism 2 is mounted on the tensioning slide 5, wherein the first servo motor 6 is mounted on the body frame 1, and a driving belt 8 for driving the tensioning slide 5 to move laterally is mounted at the output end of the first servo motor 6, wherein the first servo motor 6 can also The tension slide 5 is adjusted laterally by means of a lead screw. A tension sensor 9 is installed on the right string core drive mechanism 3. The tension sensor 9 is installed at the bottom of the right string core drive mechanism 3 to detect the tension of the string core. The tension sensor 9 cooperates with the first servo motor 6 to complete the adjustment of the axial tension of the string core. A transverse slide mechanism is provided on the top of the fuselage frame 1, and an external winding release mechanism 10, a wire stabilizing mechanism 11 and a grinding mechanism 12 are installed on the transverse slide mechanism. The wire stabilizing mechanism 11 includes a first telescopic cylinder 13, and the front side of the first telescopic cylinder 13 is provided with a first telescopic cylinder 13. The output end is provided with a first mounting frame 14, and a first wire wheel 15 is provided on the first mounting frame 14. The grinding mechanism 12 includes a second telescopic cylinder 16, and a second mounting frame 17 is provided at the front output end of the second telescopic cylinder 16. A clamping manipulator and a second servo motor 18 for opening and closing the clamping manipulator are provided on the second mounting frame 17. A grinding block 19 is installed at the clamping end of the clamping manipulator. A left slide plate 34 and a right slide plate are respectively slidably provided on the left and right frames of the second mounting frame 17, and a left slide plate 34 and a right slide plate are respectively slidably provided on the left and right frames of the second mounting frame 17. An upper clamping plate 35 and a lower clamping plate are respectively installed at the front end of the right skateboard, and the grinding block 19 is installed on the opposite surfaces of the upper clamping plate 35 and the lower clamping plate. Racks 36 are provided at the right end of the left skateboard 34 and the left end of the right skateboard. A driving gear 37 is provided at the output end of the second servo motor 18. The driving gear 37 is meshed with the two groups of racks 36. The driving gear 37 is driven to rotate by the second servo motor 18, and the left skateboard 34 and the right skateboard are driven to slide relative to each other through the cooperation of the driving gear 37 and the two racks 36, so that the upper clamping plate 35 and the lower clamping plate complete the clamping work.

[0035] The left string core driving mechanism 2 and the right string core driving mechanism 3 are arranged opposite to each other on the left and right sides, and both the left string core driving mechanism 2 and the right string core driving mechanism 3 include a third servo motor 20, a driven shaft 21 and a transmission belt 22, and both ends of the driven shaft 21 are respectively provided with a string hanging hook 23 and a driven pulley 24, and the output end of the third servo motor 20 is provided with a driving pulley 25, and the driving pulley 25 and the driven pulley 24 are connected by the transmission belt 22; the left string core driving mechanism 2 and the right string core driving mechanism 3 both use the transmission belt 22 to drive the driven shaft 21 and the hook to rotate. Due to the high-speed rotation of the hook, the placement of the belt drive can effectively avoid the vibration caused by gear transmission or direct transmission, thereby ensuring the quality of the winding.

[0036] The external winding wire release mechanism 10 includes, from back to front, a second wire wheel 26, a wire winding check mechanism, a damping wheel set 27, a clamping cylinder 28 and a third wire wheel 29. The bottom output end of the clamping cylinder 28 is provided with a clamping plate 30 for clamping the winding wire. The wire winding check mechanism includes a check cylinder 31 and a bottom plate 32. The check cylinder 31 is installed above the bottom plate 32, and friction blocks 33 are provided at the bottom output end of the check cylinder 31 and the top of the bottom plate 32. The winding wire passes through the second wire wheel 26, the wire winding check mechanism, the damping wheel set 27, the clamping cylinder 28 and the third wire wheel in sequence. 29. The check cylinder 31 of the wire winding check mechanism clamps the wire winding through the friction block 33 to achieve a check effect. The clamping cylinder 28 controls the clamping plate 30 to clamp the wire winding, which is used to fix the wire winding after the wire winding is completed. The wire winding is kept at a certain pre-tensioning force through the damping wheel group 27. The damping wheel group 27 is a plurality of damping wheels with manually adjustable damping force, and the damping force of the damping wheel group 27 can be adjusted, thereby adjusting the tensioning force of the wire winding. After the tensioning force of the wire winding is adjusted by the damping wheel, it does not need to be adjusted later, so there is no need to adjust the tensioning force of the wire winding on site every time.

[0037] A cylinder bracket 38 is installed at the top of the transverse slide, the first telescopic cylinder 13 is installed on the cylinder bracket 38, and a guide column 39 for limiting the first mounting frame 14 is installed on the cylinder bracket 38 to ensure the stability of the first wire wheel 15.

[0038] The fuselage frame 1 is provided with a touch screen 40 for uniformly controlling the left string core driving mechanism 2, the right string core driving mechanism 3, the wire stabilizing mechanism 11, the grinding mechanism 12 and the string core tensioning mechanism 4. The left string core driving mechanism 2, the right string core driving mechanism 3, the wire stabilizing mechanism 11, the grinding mechanism 12 and the string core tensioning mechanism 4 are uniformly controlled by the touch screen 40, so that the string core tensioning, grinding and wire winding are fully automatically completed, and only the end of the wire winding needs to be manually wound around the string core.

[0039] The outer winding wire-releasing mechanism 10 can release at least one group of winding wires. Some strings are wound with one layer of winding wire, while others are wound with 2 to 3 layers of winding wire. This device can wind multiple winding wires. After winding one layer, the end of the next group of winding wires can be directly wrapped around the first winding wheel and wound around the string core. The operation is convenient.

[0040] The transverse slide mechanism includes a transverse slide 41 installed on the fuselage frame 1, a transverse slide plate 42 slidably installed on the transverse slide 41, and a fourth servo motor 43 driving the transverse slide plate 42 to slide laterally. The fourth servo motor 43 drives the transverse slide plate 42 to move laterally to complete the grinding and winding operations. The grinding block 19 is equipped with a string diameter monitoring device 44. During the winding process, a string diameter monitoring electronic laser diameter measuring device is installed on the grinding block to monitor the string diameter at any time. When the string diameter exceeds the set value, the string device automatically stops. The string diameter monitoring device is an existing product on the market and is used to detect the string diameter.

[0041] When in use, the two ends of the string core are manually hung on the left string core driving mechanism 2 and the right string core driving mechanism 3 respectively, and then the axial tensioning force of the string core is controlled by the cooperation of the string core tensioning mechanism 4 and the tension sensor 9. The string core tensioning mechanism 4 adopts the first servo motor 6 to drive the tensioning slide 5 to move horizontally through the driving belt 8 to complete the tensioning of the string core, and the tensioning force of the string core can be accurately controlled; after the string core is installed, the second mounting frame 17 is pushed forward to the rear of the string core by the second telescopic cylinder 16, and the clamping manipulator is driven by the second servo motor 18 to make the grinding block 19 clamp the string core, and then slide horizontally through the transverse slide mechanism. At the same time, the string core rotates to automatically complete the grinding of the string core. The subsequent winding surface grinding can be carried out in the same way to improve the degree of automation; the wire is released through the external winding wire release mechanism 10, and the first mounting frame 14 is pushed forward to the rear of the string core through the first telescopic cylinder 13, and the first wire wheel 1 At the rear of the string core, the winding wire passes around the first wire wheel 15 and then is wound on the string core, shortening the distance between the first wire wheel 15 and the string core, so that the winding wire can be tightly wound on the string core, thereby improving the quality of the string and improving the practicality; the winding wire passes through the second wire wheel 26, the winding wire check mechanism, the damping wheel group 27, the clamping cylinder 28 and the third wire wheel 29 in sequence, the check cylinder 31 of the winding wire check mechanism clamps the winding wire through the friction block 33 to play a check effect, the clamping cylinder 28 controls the clamping plate 30 to clamp the winding wire, and is used to fix the winding wire after the winding wire is completed, and the winding wire is kept at a certain pre-tensioning force through the damping wheel group 27, and the damping force of the damping wheel group 27 can be adjusted, thereby adjusting the tension of the winding wire, and the tension of the winding wire does not need to be adjusted later after the tension of the winding wire is adjusted by the damping wheel, so there is no need to adjust the tension of the winding wire on site every time, and the winding wire can be manually cut after the winding wire is completed, and then the string core is disassembled.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quantitative numerical control string winding machine, comprising a machine frame (1), a left string core driving mechanism (2) and a right string core driving mechanism (3); characterized in that: The device also comprises a string core tensioning mechanism (4), the string core tensioning mechanism (4) comprising a tensioning slide (5) and a first servo motor (6), the tensioning slide (5) being slidably mounted on the fuselage frame (1) via a linear guide rail (7), the left string core driving mechanism (2) being mounted on the tensioning slide (5), the first servo motor (6) being mounted on the fuselage frame (1), and a driving belt (8) for driving the tensioning slide (5) to move laterally being mounted on the output end of the first servo motor (6), a tension sensor (9) being mounted on the right string core driving mechanism (3), a transverse sliding mechanism being arranged on the top of the fuselage frame (1), and an external winding and releasing mechanism being mounted on the transverse sliding mechanism (10), a wire stabilizing mechanism (11) and a grinding mechanism (12), the wire stabilizing mechanism (11) comprising a first telescopic cylinder (13), a first mounting frame (14) being provided at the front output end of the first telescopic cylinder (13), and a first guide wheel (15) being provided on the first mounting frame (14), the grinding mechanism (12) comprising a second telescopic cylinder (16), a second mounting frame (17) being provided at the front output end of the second telescopic cylinder (16), a clamping manipulator and a second servo motor (18) for opening and closing the clamping manipulator being provided on the second mounting frame (17), and a grinding block (19) being provided at the clamping end of the clamping manipulator; The external winding wire releasing mechanism (10) comprises, from back to front, a second wire guide wheel (26), a wire winding non-return mechanism, a damping wheel set (27), a clamping cylinder (28) and a third wire guide wheel (29); a clamping plate (30) for clamping the wire winding is provided at the bottom output end of the clamping cylinder (28); The wire winding non-return mechanism comprises a non-return cylinder (31) and a bottom plate (32); the non-return cylinder (31) is installed above the bottom plate (32), and friction blocks (33) are provided at the bottom output end of the non-return cylinder (31) and the top end of the bottom plate (32); A left slide plate (34) and a right slide plate are slidably arranged on the left frame and the right frame of the second mounting frame (17), and an upper clamping plate (35) and a lower clamping plate are respectively installed at the front ends of the left slide plate (34) and the right slide plate, the grinding block (19) is installed on the opposite surfaces of the upper clamping plate (35) and the lower clamping plate, the right end of the left slide plate (34) and the left end of the right slide plate are both provided with racks (36), and the output end of the second servo motor (18) is provided with a driving gear (37), and the driving gear (37) is meshed with the two sets of racks (36); The damping wheel set (27) is a plurality of damping wheels whose damping force can be manually adjusted; The transverse sliding platform mechanism comprises a transverse sliding track (41) mounted on the fuselage frame (1), a transverse sliding plate (42) slidably mounted on the transverse sliding track (41), and a fourth servo motor (43) for driving the transverse sliding plate (42) to slide laterally, and a string diameter monitoring device (44) is mounted on the polishing block (19).

2. A quantitative numerically controlled string winding machine according to claim 1, characterized in that: The left string core driving mechanism (2) and the right string core driving mechanism (3) are arranged opposite to each other on the left and right sides. The left string core driving mechanism (2) and the right string core driving mechanism (3) both comprise a third servo motor (20), a driven shaft (21) and a transmission belt (22). The two ends of the driven shaft (21) are respectively provided with a string hook (23) and a driven pulley (24). The output end of the third servo motor (20) is provided with a driving pulley (25). The driving pulley (25) and the driven pulley (24) are connected in transmission via the transmission belt (22).

3. A quantitative numerically controlled string winding machine according to claim 1, characterized in that: A cylinder bracket (38) is installed at the top end of the transverse sliding table mechanism, the first telescopic cylinder (13) is installed on the cylinder bracket (38), and a guide column (39) for limiting the position of the first mounting frame (14) is installed on the cylinder bracket (38).

4. A quantitative numerically controlled string winding machine according to claim 1, characterized in that: The fuselage frame (1) is provided with a touch screen (40) for uniformly controlling the left string core driving mechanism (2), the right string core driving mechanism (3), the wire stabilizing mechanism (11), the grinding mechanism (12) and the string core tensioning mechanism (4).

5. A quantitative numerically controlled string winding machine according to claim 1, characterized in that: The external winding wire-releasing mechanism (10) can release at least one group of winding wires.

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