Violin tread shape-sampling secondary size-repairing mold
By designing a violin pedal-shaped secondary bridge-fitting mold, the bridge can be precisely fitted under pressure, solving the problem that traditional bridge fitting requires no load. This achieves high-precision and convenient remote bridge fitting, avoiding changes in tone.
Patent Information
- Application Number
- CN202520394767.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In existing technologies, violin bridge repair must be performed under no-load conditions, and cannot be accurately repaired under pressure, resulting in high repair difficulty and significant changes in tone, and making remote bridge repair impossible.
Design a violin tread shape acquisition and secondary bridge repair mold, including a mold frame, a bridge foot shape acquisition mold, a group of steel pins for the tread, bridge positioning adjustment screws and set screws. By taking out the mold under pressure and fixing the position of the steel pins, the precise repair of the bridge can be achieved.
It improves the accuracy and convenience of bridge repair and matching, reduces the difficulty of repair and matching, realizes remote bridge matching without piano, and avoids changes in tone.
Smart Images
Figure CN223898037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of musical instrument technology, and in particular to a secondary mold for shaping and modifying the violin pedal. Background Technology
[0002] Violin is a general term for stringed instruments, mainly including violin, viola, cello and double bass (also known as double bass). Violin plays a very important role in the field of music, and can be played as a solo instrument or in chamber music, symphony and other musical forms.
[0003] The bridge (also known as the violin bridge) is a very important component of the violin, often referred to as the "heart" of the instrument. The bridge not only transmits the vibrations of the strings to the soundboard, thus generating resonance throughout the body, but also determines the distance between the strings and the fingerboard, affecting playability and tone. Due to the properties of wood, the bridge can deform due to seasonal changes (humidity and temperature variations) and string pressure. Therefore, the bridge is a vulnerable part, and replacing it requires bridge repair to readjust the shape and vibration characteristics of the soundboard.
[0004] Traditionally, bridge repair is performed on an unloaded surface (without strings and no pressure deformation). The luthier relies on their experience, skill, and carving technique to manually adjust the bridge feet to ensure a perfect fit with the surface. While achieving a seamless fit under unloaded conditions is no easy feat, and beyond the capabilities of most, once the bridge and strings are installed and tuned, the surface sags under load, obliterating its original shape. At this point, a misalignment exists between the bridge feet and the surface. Although the bridge's own deformation can compensate for some of this misalignment, the contact points between the bridge feet and the surface remain unevenly stressed.
[0005] Traditional bridge repair methods require the violin surface to be used as a reference, and the bridge and surface must be compared and matched as they are repaired. Therefore, if you ask a violinist to repair your bridge using traditional methods, you need to send the entire violin to repair the bridge and surface. It is not possible to repair the bridge without the violin, which is very inconvenient.
[0006] Therefore, how to provide a violin tread shape-based secondary bridge-matching mold to improve the accuracy of bridge matching, reduce the difficulty of matching, enable remote bridge matching, and avoid significant changes in violin tone due to bridge replacement has become an urgent technical problem to be solved. Summary of the Invention
[0007] The technical problem this utility model aims to solve is to provide a violin tread shaping secondary bridge repair mold. After the violinist has completed the initial repair and polishing of the bridge (leaving room for adjustment), and simultaneously completed the repair and adjustment of the soundpost's position and tightness, and stringing and tuning, the tread shaping is used for secondary bridge repair under pressure when the violin surface has already been shaped. Alternatively, for existing performance violins, the tread shaping is archived for future replacement of old bridges with new ones. This improves the accuracy of bridge repair, reduces the difficulty of repair, enables remote bridge replacement, and avoids significant changes in the violin's tone caused by bridge replacement.
[0008] This utility model is implemented as follows: a secondary shaping mold for violin treads, comprising:
[0009] A mold frame has a hollow structure with a bridge placement slot from bottom to top. A bridge pattern reference outline is symmetrically provided on the front and back sides. Several positioning holes are provided on the side, and several locking holes are provided on the front and back sides. A first locking hole is provided in the middle of the lower part of the front and back sides, and a central arrow is provided at the bottom and middle. A collection mold limiting part is provided in the inner ring of the bridge placement slot.
[0010] Two foot-shaped acquisition molds are provided with a male buckle and a female buckle alternately at both ends of their inner sides. The two foot-shaped acquisition molds are fitted together by the male buckle and the female buckle. Each foot-shaped acquisition mold has several steel needle holes symmetrically arranged from top to bottom, and a second locking hole matching the first locking hole is provided in the middle of the outer side. After the two foot-shaped acquisition molds are fitted together, they are placed in the piano bridge placement groove by the acquisition mold limiting part and are flush with the mold frame.
[0011] A tread steel needle group includes several steel needles, each of which passes through a steel needle hole from top to bottom;
[0012] Several bridge positioning and adjusting screws are respectively matched with one of the positioning holes;
[0013] Several bridge set screws are each matched with a set hole as described above;
[0014] Two acquisition mold locking screws are respectively matched with the first mold locking hole and the second mold locking hole.
[0015] Furthermore, the hollowed-out portion of the hollowed-out structure is a regular hexagon.
[0016] Furthermore, the bottom surface of the code foot surface acquisition module is an arc surface, and both ends of the bottom are provided with arc surface reference feet.
[0017] Furthermore, a center mark is provided at the center of the bottom surface of the code foot-shaped acquisition mold.
[0018] Furthermore, the two fitted bridge foot surface acquisition molds have grooves in the middle that match the sides of the bridge.
[0019] The advantages of this utility model are:
[0020] The violin is constructed using a frame, two bridge surface shape acquisition molds, a group of pedal pins (including four groups of pins), several bridge positioning and adjusting screws, several bridge locking screws, and two acquisition mold locking screws. With the violin under pressure (strings installed and pitch adjusted), the curved reference pedals of the two bridge surface shape acquisition molds are placed on the violin surface, with the center mark aligned with the center line of the surface. The sides are fitted to the bridge and locked using male and female fasteners. Next, the pins of the pedal pin group are passed through the pin holes of the bridge surface shape acquisition molds and placed on the violin surface for pedaling. Glue is then applied to each pin to fix the position of the pedal pins. This completes the curvature / surface shape of the violin surface under pressure (i.e., mold taking). The bridge surface shape acquisition molds are then removed. For secondary bridge repair or refitting, the bridge to be repaired is sandwiched between the two bridge surface shape acquisition molds, and the bridge is placed in the bridge placement slot of the frame through the bridge surface shape acquisition molds. The process involves attaching the bridge by threading the locking screw through the first locking hole of the mold frame and connecting it to the second locking hole of the bridge foot surface acquisition mold. The position of the bridge is adjusted using the center arrow of the mold frame and the bridge shape reference contour. The bridge position is then fixed using the bridge positioning adjustment screw, positioning hole, bridge set screw, and set hole. Finally, the bridge feet are repaired and polished with appropriate tools until they match the arc surface of the pedal steel pin group. This ensures the repaired bridge matches the violin surface under pressure. Furthermore, the pedal steel pin group, bridge foot surface acquisition mold, and bridge can be sent for remote bridge matching, eliminating the need to send the entire violin for matching as is traditionally done. This significantly improves the accuracy of bridge repair and greatly reduces the difficulty of repair, enabling remote bridge matching and avoiding significant changes in violin tone caused by bridge replacement. The violin pedal shape acquisition mold is kept on file for future bridge repair. Attached Figure Description
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Figure 1 This is a schematic diagram of the structure of a secondary shaping mold for violin pedals according to this utility model.
[0023] Figure 2 This is a perspective view of a secondary shaping mold for violin treads according to this utility model.
[0024] Figure 3 This is a schematic diagram of the structure of the mold frame of this utility model.
[0025] Figure 4 This is an assembly diagram of the code foot surface type acquisition module of this utility model.
[0026] Figure 5This is a schematic diagram of the structure of the foot-type data acquisition mold and the steel needle group on the tread surface of this utility model.
[0027] Figure 6 This is a schematic diagram of the structure of the code foot surface type acquisition module of this utility model.
[0028] Figure 7 This is a schematic diagram showing the usage status of the foot surface type data acquisition mold and the tread surface steel needle group of this utility model.
[0029] Figure 8 This is a schematic diagram of traditional code editing (in idle state).
[0030] Marker explanation:
[0031] 100-A secondary mold for shaping violin pedals, comprising: 1-Mold frame; 2-Lamp foot surface shape collection mold; 3-Pedal steel pin group; 4-Lamp bridge positioning and adjusting screw; 5-Lamp bridge set screw; 6-Collection mold locking screw; 7-Violin; 8-Lamp bridge; 11-Lamp bridge placement groove; 12-Lamp shape reference outline; 13-Positioning hole; 14-Setting hole; 15-First locking hole; 16-Center arrow; 111-Collection mold limiting part; 21-Male buckle; 22-Female buckle; 23-Steel pin hole; 24-Second locking hole; 25-Arc surface reference pedal; 26-Center mark; 27-Groove; 31-Steel pin. Detailed Implementation
[0032] This utility model embodiment provides a violin tread shaping secondary bridge repair mold 100, which solves the technical problems of the prior art where the repaired bridge can only fit the violin surface in an unloaded state. When strings are installed and pressure is applied to the violin surface, the surface will deform, causing it to fail to fit the bridge. The deformation of the bridge itself is required to compensate for the deviation. In addition, the repair requires sending the entire violin for bridge and surface adjustment, which is very inconvenient. This embodiment greatly improves the accuracy and convenience of bridge repair.
[0033] The technical solution in this utility model embodiment is to solve the above problems. The overall idea is as follows: the tread steel pin group 3 is used to take a mold of the curvature of the piano surface under pressure, and then the position of the tread steel pin group 3 is fixed (applied glue). Subsequently, the curved surface of the tread steel pin group 3 is used to modify the piano bridge 8 sandwiched between the two bridge foot surface acquisition molds 2 so that the modified piano bridge 8 can fit the piano surface under pressure.
[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0035] Please refer to Figures 1 to 8 As shown, a preferred embodiment of the violin tread shaping and secondary trimming mold 100 of this utility model includes:
[0036] A mold frame 1 has a hollow structure, with a bridge placement slot 11 from bottom to top, a bridge reference outline 12 symmetrically provided on the front and back, several positioning holes 13 on the side, several locking holes 14 on the front and back, a first locking hole 15 in the middle of the lower part of the front and back, and a central arrow 16 at the bottom and middle; a collection mold limiting part 111 is provided in the inner ring of the bridge placement slot 11; the mold frame 1 is used to install and fix two bridge foot surface type collection molds 2, and at the same time, it contains the bridge 8 to be repaired, and positions and locks the bridge 8, acting as the base for bridge repair, and as a clamp for bridge repair, ensuring the repair process and accuracy;
[0037] Two bridge foot surface type acquisition molds 2 are provided with a male buckle 21 and a female buckle 22 alternately at their inner ends, and the two bridge foot surface type acquisition molds 2 are fitted together by the male buckle 21 and the female buckle 22; each bridge foot surface type acquisition mold 2 is symmetrically provided with a number of dense steel needle holes 23 from top to bottom, and a second locking hole 24 matching the first locking hole 15 is provided in the middle of the outer side; after the two bridge foot surface type acquisition molds 2 are fitted together, they are placed in the bridge placement groove 11 by the acquisition mold limiting part 111 and are flush with the mold frame 1; the bridge foot surface type acquisition mold 2 is used to install steel needles 31, and the steel needles 31 are used to take the mold of the curvature of the piano surface where the bridge 8 is located.
[0038] A tread steel needle group 3 includes several steel needles 31, each of which passes through a steel needle hole 23 from top to bottom; the tread steel needle group 3 is used to tread (take mold) the curvature of the piano surface under pressure. After taking mold, the position of the steel needles 31 needs to be fixed. In specific implementation, it can be fixed by applying glue.
[0039] Several bridge positioning adjustment screws 4 are respectively matched with a positioning hole 13; the bridge positioning adjustment screws 4 are threadedly connected to the positioning hole 13 and are used to position the bridge 8.
[0040] Several bridge set screws 5 are respectively matched with a set hole 14; the bridge set screws 5 are threadedly connected to the set hole 14 and are used to tighten the bridge 8.
[0041] Two acquisition mold locking screws 6 are respectively matched with a first mold locking hole 15 and a second mold locking hole 24; the acquisition mold locking screws 6 are sequentially threaded to the first mold locking hole 15 and the second mold locking hole 24, and are used to lock the code foot surface type acquisition mold 2.
[0042] The hollowed-out portion of the hollowed-out structure is a regular hexagon.
[0043] The bottom surface of the model 2 is curved, and both ends of the bottom are provided with curved reference feet 25 to better match the piano surface.
[0044] The bottom surface of the code foot type acquisition module 2 is provided with a center mark 26.
[0045] The two fitting foot-shaped acquisition molds 2 are provided with a groove 27 in the middle that matches the side of the piano bridge 8.
[0046] Working principle of this utility model:
[0047] With the violin 7 under pressure, the bottom surfaces of the two bridge foot surface acquisition molds 2 are attached to the violin surface, and the sides are attached to the bridge 8 and locked in place by the male buckle 21 and female buckle 22. Then, the steel needles 31 are passed through the steel needle holes 23, and the bottom ends of the steel needles 31 are pressed against the violin surface to form the pedals. Then, glue is applied to each of the steel needles 31 to fix their positions. Finally, the bridge foot surface acquisition molds 2 are removed to complete the mold removal.
[0048] When bridge repair is needed, the bridge 8 to be repaired is sandwiched between the two bridge foot surface acquisition molds 2. The bridge foot surface acquisition molds 2 are placed in the bridge placement slot 11 and locked in place by the acquisition mold limiting part 111. The bridge foot surface acquisition molds 2 are locked by the acquisition mold locking screws 6. The position of the bridge 8 is adjusted by the bridge type reference contour 12. Then, the bridge 8 is positioned and fixed by the bridge positioning adjustment screws 5 and the bridge set screws 6. Finally, the bridge feet of the bridge 8 are repaired and polished with a suitable tool until they match the curvature of the pedal steel pin group 3.
[0049] In summary, the advantages of this utility model are as follows:
[0050] The violin is constructed using a frame, two bridge surface shape acquisition molds, a group of pedal pins (including four groups of pins), several bridge positioning and adjusting screws, several bridge locking screws, and two acquisition mold locking screws. With the violin under pressure (strings installed and pitch adjusted), the curved reference pedals of the two bridge surface shape acquisition molds are placed on the violin surface, with the center mark aligned with the center line of the surface. The sides are fitted to the bridge and locked using male and female fasteners. Next, the pins of the pedal pin group are passed through the pin holes of the bridge surface shape acquisition molds and placed on the violin surface for pedaling. Glue is then applied to each pin to fix the position of the pedal pins. This completes the curvature / surface shape of the violin surface under pressure (i.e., mold taking). The bridge surface shape acquisition molds are then removed. For secondary bridge repair or refitting, the bridge to be repaired is sandwiched between the two bridge surface shape acquisition molds, and the bridge is placed in the bridge placement slot of the frame through the bridge surface shape acquisition molds. The process involves attaching the bridge by threading the locking screw through the first locking hole of the mold frame and connecting it to the second locking hole of the bridge foot surface acquisition mold. The position of the bridge is adjusted using the center arrow of the mold frame and the bridge shape reference contour. The bridge position is then fixed using the bridge positioning adjustment screw, positioning hole, bridge set screw, and set hole. Finally, the bridge feet are repaired and polished with appropriate tools until they match the arc surface of the pedal steel pin group. This ensures the repaired bridge matches the violin surface under pressure. Furthermore, the pedal steel pin group, bridge foot surface acquisition mold, and bridge can be sent for remote bridge matching, eliminating the need to send the entire violin for matching as is traditionally done. This significantly improves the accuracy of bridge repair and greatly reduces the difficulty of repair, enabling remote bridge matching and avoiding significant changes in violin tone caused by bridge replacement. The violin pedal shape acquisition mold is kept on file for future bridge repair.
[0051] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A secondary trimming mold for violin pedal shaping, characterized in that: include: A mold frame has a hollow structure with a bridge placement slot from bottom to top. A bridge pattern reference outline is symmetrically provided on the front and back sides. Several positioning holes are provided on the side, and several locking holes are provided on the front and back sides. A first locking hole is provided in the middle of the lower part of the front and back sides, and a central arrow is provided at the bottom and middle. A collection mold limiting part is provided in the inner ring of the bridge placement slot. Two foot-shaped acquisition molds are provided with a male buckle and a female buckle alternately at both ends of their inner sides. The two foot-shaped acquisition molds are fitted together by the male buckle and the female buckle. Each foot-shaped acquisition mold has several steel needle holes symmetrically arranged from top to bottom, and a second locking hole matching the first locking hole is provided in the middle of the outer side. After the two foot-shaped acquisition molds are fitted together, they are placed in the piano bridge placement groove by the acquisition mold limiting part and are flush with the mold frame. A tread steel needle group includes several steel needles, each of which passes through a steel needle hole from top to bottom; Several bridge positioning and adjusting screws are respectively matched with one of the positioning holes; Several bridge set screws are each matched with a set hole as described above; Two acquisition mold locking screws are respectively matched with the first mold locking hole and the second mold locking hole.
2. The violin tread shaping and secondary trimming mold as described in claim 1, characterized in that: The hollowed-out portion of the hollowed-out structure is a regular hexagon.
3. The violin tread shaping and secondary trimming mold as described in claim 1, characterized in that: The bottom surface of the code foot surface acquisition module is curved, and both ends of the bottom are provided with curved reference feet.
4. The violin tread shaping and secondary trimming mold as described in claim 1, characterized in that: A center mark is provided at the center of the bottom surface of the code foot-shaped acquisition mold.
5. The violin tread shaping and secondary trimming mold as described in claim 1, characterized in that: The two fitting model plates have grooves in the middle that match the sides of the bridge.