CN219831655U - Watch rotor wheel and production die thereof - Google Patents

Abstract

The utility model discloses a watch rotor wheel and a production mould thereof, comprising a rotating shaft, wherein a gear, a positioning part and a flywheel part which are coaxial with the rotating shaft are arranged on the rotating shaft, a magnetic attraction piece which is coaxial with the rotating shaft is arranged in the flywheel part, a plurality of positioning grooves are arranged on the peripheral side surface of the flywheel part, and a plurality of bearing grooves are arranged on the bottom surface of the flywheel part. Therefore, the rotor wheel and the magnetic attraction piece are integrally and once formed, the magnetic attraction piece does not need to be punched and secondarily assembled, the production cost is effectively reduced, the manufacturing precision of the rotor wheel is increased by integral one-time injection molding of the rotor wheel, the coaxiality tolerance of the magnetic attraction piece and the main shaft is extremely small, the yield of the rotor wheel is effectively improved, the manufacturing cost is reduced, the consistency of injection molded products is extremely high, the production efficiency is also higher, the integral precision is effectively improved, the torque during operation is increased, the time precision is improved, the electric energy is saved, the grade of the products is improved, the actual use demands of users are greatly met, and the technical progress of the quartz movement industry is promoted.

Description

Watch rotor wheel and production die thereof

Technical Field

The utility model relates to the technical field of watches, in particular to a watch rotor wheel and a production die thereof.

Background

Watches are well known to be classified as mechanical watches, quartz watches, electronic watches, etc., wherein the first quartz watch in the world is made by swiss in 1967 for 7 months. The quartz watch utilizes the periodic continuous vibration of the quartz crystal to bring accurate time for us, has the advantages of simple assembly, accurate running time and low price, and is widely popularized.

The core of the quartz watch is a quartz movement, the quartz movement mainly comprises a control board, a coil, a rotor wheel, a quartz vibrator, a gear and a pointer, wherein the rotor wheel is an important power part in the quartz movement, for example: the utility model of China patent CN200620068154.5 discloses a movement rotor wheel for a watch, wherein the lower end of the rotor wheel is provided with a concave cavity, a permanent magnet is arranged in the concave cavity, when the rotor wheel is actually assembled, the permanent magnet is required to be installed on the rotor wheel, firstly, a hole is required to be punched at the axle center of the permanent magnet, then the permanent magnet with the hole is installed on the concave cavity in an interference fit manner, the hole of the permanent magnet is sleeved on a rotor wheel shaft, and the diameter of the permanent magnet is very small and only a few millimeters, so that the difficulty of punching processing on the permanent magnet is high, and the manufacturing cost of the permanent magnet is also increased; when the permanent magnet is installed in the concave cavity in an interference fit mode, firstly, the thickness of the side wall of the concave cavity is thinner, the side wall of the concave cavity is easy to fracture when the permanent magnet is installed, the permanent magnet is processed for many times, the permanent magnet is easy to install in a deflection mode, and coaxiality tolerance of the permanent magnet and a rotor wheel shaft is larger, so that the yield of the rotor wheel is lower, the manufacturing cost is high, the consistency is lower, the overall accuracy is poor, the time running accuracy of a quartz movement is seriously affected, the defect is quite obvious, and therefore, the watch rotor wheel and the production die thereof are provided for solving the problem.

Disclosure of Invention

In view of the above-mentioned shortcomings in the prior art, the present utility model aims to provide a watch rotor wheel and a production mold thereof.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a wrist-watch rotor wheel and production mould thereof, includes the pivot, be provided with gear, location portion, the flywheel portion coaxial with the pivot in the pivot, be provided with in the flywheel portion with the pivot coaxial magnetism inhale the piece, flywheel portion week side is provided with a plurality of constant head tank, the bottom surface of flywheel portion is provided with a plurality of carrier groove.

Preferably, the positioning groove is communicated with the bearing groove.

Preferably, the magnetic attraction piece adopts a neodymium-iron-boron magnet.

Preferably, the upper end of the flywheel part is provided with a glue inlet groove.

Preferably, the number of the positioning grooves is at least three.

Preferably, the edges of the upper end and the lower end of the rotating shaft are provided with round corner parts.

The mold for producing the watch rotor wheel comprises a front mold assembly and a rear mold assembly, wherein an insert cavity for adapting to injection molding flywheel parts is formed in the top surface of the rear mold assembly, a first fixing cavity for adapting to injection molding rotating shaft lower ends, gears and positioning parts is formed in the bottom surface of the insert cavity, a second fixing cavity for adapting to injection molding rotating shaft upper ends is formed in the bottom surface of the front mold assembly, a bearing boss adapting to a bearing groove is arranged at the bottom of the insert cavity, and positioning ribs adapting to positioning grooves are arranged on the side wall of the insert cavity; when the magnetic attraction piece is arranged in the insert cavity, the bottom of the magnetic attraction piece is contacted with the bearing boss, and the peripheral side face is contacted with the positioning rib.

Preferably, a glue inlet convex opening matched with the glue inlet groove is formed in the bottom surface of the front module and located at the first fixing cavity.

Preferably, the bearing boss is connected with the positioning rib.

Preferably, a positioning hole for installing the thimble is formed in the bottom surface of the insert cavity.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, because the scheme is adopted, the circumferential side surface of the flywheel part is mainly provided with the positioning groove, the bottom surface of the flywheel part is provided with the bearing groove, the bottom of the insert cavity is provided with the bearing boss matched with the bearing groove, and the side wall of the insert cavity is provided with the positioning rib matched with the positioning groove, when the rotor wheel is injection molded by using the die, firstly, the magnetic attraction piece is embedded and installed in the insert cavity, the bottom of the magnetic attraction piece is contacted with the bearing boss, the circumferential side surface is contacted with the positioning rib, the magnetic attraction piece is in a suspended state in the insert cavity, then the injection molding machine integrally injection-molds the rotary shaft, the gear, the positioning part and the flywheel part through the glue feeding boss, and simultaneously, the magnetic attraction piece is injection-molded and wrapped on the flywheel part, so that the rotor wheel and the magnetic attraction piece can be integrally and once-molded; the magnetic attraction piece does not need secondary assembly and center punching, so that the production cost is effectively reduced, the manufacturing precision of the rotor wheel is greatly increased by integral one-time injection molding, the coaxiality tolerance of the magnetic attraction piece and a main shaft is extremely small, meanwhile, the yield of the rotor wheel is effectively improved, the manufacturing cost is reduced, the consistency of the rotor wheel formed by injection molding into a whole is extremely high, the production efficiency is also high, the integral precision of a product is also effectively improved, the torque of the rotor wheel during driving is directly increased, the time precision of a movement is improved, the electric energy of the movement is saved, the grade of the product is improved, the actual use requirement of a user is greatly met, the technical progress of the quartz movement is promoted, the structure is simple, the production cost is low, the precision is high, the consistency is good, and the practicability is very high.

Drawings

Fig. 1 is an isometric view of a rotor wheel according to an embodiment of the present utility model.

Fig. 2 is a schematic structural view of a carrying groove according to an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a mold according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a front mold assembly according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a positioning hole according to an embodiment of the present utility model.

In the figure:

1. a rotating shaft; 2. a gear; 3. a positioning part; 4. a flywheel section; 5. a magnetic attraction piece; 6. a positioning groove; 7. a carrying groove; 8. a glue inlet groove; 9. a rounded corner portion; 10. a front mold assembly; 11. a rear module assembly; 12. an insert cavity; 13. a first fixed cavity; 14. a second fixed cavity; 15. a bearing boss; 16. positioning ribs; 17. a glue inlet convex opening; 18. and positioning holes.

Description of the embodiments

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper end", "lower end", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 5, the watch rotor wheel and the production mold thereof provided in this embodiment include a rotating shaft 1, a gear 2 concentric with the rotating shaft 1, a positioning portion 3, and a flywheel portion 4 are disposed on the rotating shaft 1, the positioning portion 3 mainly uses axial positioning when the gear 2 is engaged with other gears 2, a magnetic attraction piece 5 concentric with the rotating shaft 1 is disposed in the flywheel portion 4, a plurality of positioning grooves 6 are disposed on a peripheral side surface of the flywheel portion 4, and a plurality of carrying grooves 7 are disposed on a bottom surface or a top surface of the flywheel portion 4.

Further, the positioning groove 6 of the present embodiment is communicated with the bearing groove 7. The positions and the number of the magnetic attraction pieces 5 exposed out of the outer surface of the flywheel part 4 are small, so that the magnetic attraction pieces 5 can be firmly and continuously wrapped by the material of the outer surface of the flywheel part 4.

Further, the magnetic attraction member 5 of the present embodiment adopts a neodymium-iron-boron magnet. The neodymium-iron-boron magnet has high energy product, high coercive force and good stability, is suitable for manufacturing miniature and efficient permanent magnet devices, is widely used in civil and military industry, has large magnetic attraction force, and is suitable for the preferred use of rotor wheels.

Further, the upper end of the flywheel part 4 of the present embodiment is provided with a glue inlet groove 8. Therefore, the setting of the glue inlet convex opening 17 and the glue inlet groove 8 enables the mold to remain glue in the glue inlet groove 8 when the mold is completed in injection molding and is opened, the glue inlet groove 8 is concave, the residual glue is not protruded out of the notch of the glue inlet groove 8, the glue inlet opening of the product is more attractive, and the residual glue can not influence the installation of the rotating shaft 1 of the rotor wheel.

Further, the positioning grooves 6 of the present embodiment have at least three positioning grooves. When the insert is arranged in the die, the three positioning ribs 16 are utilized to enable the axis of the magnetic attraction piece 5 to be directly overlapped with the axis of the rotating shaft 1, so that the error of concentricity of the magnetic attraction piece 5 and the rotating shaft 1 is effectively reduced, and the integral forming precision is improved.

Further, rounded corners 9 are provided at the edges of the upper and lower ends of the rotary shaft 1 of the present embodiment. The round corner 9 is utilized to smoothly transition the edge of the upper end and the lower end of the rotating shaft 1, and the rotating shaft 1 is smoothly guided and installed in the corresponding installation hole of the movement through the round corner 9, so that the actual installation of the rotor wheel rotating shaft 1 is facilitated.

The utility model provides a mould for producing wrist-watch rotor wheel, including front mould subassembly 10 and back mould subassembly 11, back mould subassembly 11 top surface has offered the mold insert chamber 12 that is used for adapting to injection moulding flywheel portion 4, mold insert chamber 12 bottom surface has offered the first fixed chamber 13 that is used for adapting to injection moulding pivot 1 lower extreme, gear 2, location portion 3, front mould subassembly 10 bottom surface has offered the second fixed chamber 14 that is used for adapting to injection moulding pivot 1 upper end, mold insert chamber 12 bottom surface or top surface are provided with the bearing boss 15 that is fit with carrier groove 7, it is the same to need to say that bearing boss 15 acts on the bearing boss 15 of bottom surface when mold insert chamber 12 top surface, mold insert chamber 12 sets up bearing boss 15 in order to suspend the bottom of magnetic attraction piece 5, and then make the bottom parcel of magnetic attraction piece 5 of plastic material, mold insert chamber 12 lateral wall is provided with the spacer 16 that is fit with constant head groove 6, mold insert chamber 12 sets up the effect of spacer 16 is in order that when magnetic attraction piece 5 installs on bearing boss 15, three spacer 16 can directly make the pivot 5 and lateral wall of magnetic attraction piece 5 and lateral wall 16 and the side of magnetic attraction piece 5 are not contacted with the side of the axial center of the magnetic attraction piece 16 in the place of the side of the magnetic attraction piece 5, and the side wall of the side of the magnetic attraction piece is not set up the magnetic piece 5 is in the place of the axial center 16; when the magnetic attraction piece 5 is arranged in the insert cavity 12, the bottom of the magnetic attraction piece 5 is contacted with the bearing boss 15, and the peripheral side face is contacted with the positioning rib 16.

When the rotor wheel is injection molded by using the mold, firstly, the magnetic attraction piece 5 is embedded and installed in the insert cavity 12, the bottom of the magnetic attraction piece 5 is contacted with the bearing boss 15, the peripheral side face of the magnetic attraction piece is contacted with the positioning rib 16, the magnetic attraction piece 5 is in a suspension state in the insert cavity 12, the mold is closed, a sealed molding cavity is formed in the mold, then an injection molding machine is used for integrally injection molding the rotary shaft 1, the gear 2, the positioning part 3 and the flywheel part 4 in the mold cavity through the glue feeding convex opening 17, and meanwhile, the injection molding glue is used for injection molding and wrapping the magnetic attraction piece 5 in the flywheel part 4, so that the technological effects of once embedding and clamping of the magnetic attraction piece 5 are achieved, and the rotor wheel and the magnetic attraction piece 5 can be integrally and once molded are achieved; and magnetism is inhaled piece 5 and is also not required the secondary equipment, need not inhale piece 5 center at magnetism and punch, effectively reduce magnetism and inhale the manufacturing cost of piece 5, and whole once injection moulding of rotor wheel has also greatly increased its manufacturing accuracy, and make magnetism inhale piece 5 and the axiality tolerance of main shaft minimum, simultaneously, effectively improve the yield of rotor wheel, reduce its manufacturing cost, injection moulding's rotor wheel uniformity is very high moreover, production efficiency is also higher, also effectively improve the holistic precision of product, torque when directly having increased the rotor wheel drive, the time precision of walking of core has been improved, the electric energy of saving the core, promote the product grade, effectively satisfy user in-service use demand, the complete machine precision of quartz core is improved.

Further, the bottom surface of the front mold assembly 10 of the embodiment and the first fixing cavity 13 are provided with a glue inlet protrusion 17 adapted to the glue inlet groove 8. Therefore, the setting of the glue inlet convex opening 17 and the glue inlet groove 8 enables the mold to remain glue in the glue inlet groove 8 when the mold is completed in injection molding and is opened, the glue inlet groove 8 is concave, the residual glue is not protruded out of the notch of the glue inlet groove 8, the glue inlet opening of the product is more attractive, and the residual glue can not influence the installation of the rotating shaft 1 of the rotor wheel.

Further, the bearing boss 15 of the present embodiment is connected with the positioning rib 16. The volumes of the bearing boss 15 and the positioning rib 16 are very small, and the integral design ensures that the connection of the bearing boss 15 and the positioning rib 16 ensures that the insert positioning structure is firmer, and the service life of the die is prolonged; meanwhile, the number of procedures for machining the bearing boss 15 and the positioning rib 16 can be reduced, and machining of the bearing boss 15 and the positioning rib 16 in the insert cavity 12 is facilitated.

Further, the bottom surface of the insert cavity 12 of the present embodiment is provided with a positioning hole 18 for mounting a thimble. Therefore, the positioning holes 18 are utilized to facilitate the installation of the ejector pins, so that the front ends of the ejector pins are abutted against the bottom surface of the flywheel part 4 and are ejected out of the insert cavity 12 when the mold is opened, the effect of automatic demolding of the rotor wheel is achieved, the production efficiency is improved, and the automatic production is facilitated.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (10)

1. A watch rotor wheel, characterized in that: the magnetic attraction type flywheel comprises a rotating shaft, wherein a gear, a positioning part and a flywheel part which are coaxial with the rotating shaft are arranged on the rotating shaft, a magnetic attraction piece which is coaxial with the rotating shaft is arranged in the flywheel part, a plurality of positioning grooves are formed in the peripheral side face of the flywheel part, and a plurality of bearing grooves are formed in the bottom face of the flywheel part.

2. A watch rotor wheel as claimed in claim 1, wherein: the positioning groove is communicated with the bearing groove.

3. A watch rotor wheel as claimed in claim 1, wherein: the magnetic attraction piece adopts a neodymium-iron-boron magnet.

4. A watch rotor wheel as claimed in claim 1, wherein: and the upper end of the flywheel part is provided with a glue inlet groove.

5. A watch rotor wheel according to claim 1 or 2, wherein: the number of the positioning grooves is at least three.

6. A watch rotor wheel according to claim 1 or 4, wherein: and round corner parts are arranged at the edges of the upper end and the lower end of the rotating shaft.

7. A mold for producing the watch rotor wheel of claim 1, wherein: the mold comprises a front mold assembly and a rear mold assembly, wherein an insert cavity for adapting to injection molding flywheel parts is formed in the top surface of the rear mold assembly, a first fixing cavity for adapting to injection molding rotating shaft lower ends, gears and positioning parts is formed in the bottom surface of the insert cavity, a second fixing cavity for adapting to injection molding rotating shaft upper ends is formed in the bottom surface of the front mold assembly, a bearing boss adapting to a bearing groove is formed in the bottom of the insert cavity, and positioning ribs adapting to positioning grooves are formed in the side walls of the insert cavity; when the magnetic attraction piece is arranged in the insert cavity, the bottom of the magnetic attraction piece is contacted with the bearing boss, and the peripheral side face is contacted with the positioning rib.

8. A mold for producing a watch rotor wheel as recited in claim 7, wherein: the front module assembly bottom surface and be located first fixed chamber department and be provided with the rubberizing bulge that advances gluey groove adaptation.

9. A mold for producing a watch rotor wheel as recited in claim 7, wherein: the bearing boss is connected with the positioning rib.

10. A mold for producing a watch rotor wheel as recited in claim 7, wherein: and a positioning hole for installing the thimble is formed in the bottom surface of the insert cavity.