Grinding device for clock hand production

Abstract

The invention discloses a grinding device for clock hand production, relates to the technical field of clock hand machining, and solves the problems that in the grinding process of an existing grinding device, the position of a grinding wheel and the angle of a clock hand need to be adjusted for multiple times, operation is relatively tedious, the position of the clock hand is prone to deviation, and machining efficiency is high. Therefore, the overall processing efficiency and the quality of finished products are influenced. Comprising a base, a processing bin arranged on the base and a sealing bin cover rotationally arranged at a bin opening of the processing bin. Wherein a pair of translation guide rods is arranged at the upper end of the interior of the processing bin; the translation seat is movably arranged on the pair of translation guide rods in a sleeving mode, a machine rod is arranged on the bottom face of the translation seat, a servo direct current motor is arranged on the side face of the machine rod, a fixing block connected with the servo direct current motor is rotationally arranged in a port of the machine rod, and a fine grinding die is arranged on the fixing block; the position of the grinding wheel and the angle of the watch hand do not need to be adjusted many times, machining procedures are reduced, and then the overall machining efficiency and the finished product quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of clock and watch hand processing, and in particular relates to a grinding device for producing clock and watch hands. Background Art

[0002] In the production process of watches, it is usually necessary to grind the watch hands. This process includes stamping, which is to put the selected material into the mold and punch it through a punching machine to obtain the initial shape of the watch hands; grinding, which is to use special grinding equipment, such as a grinder, to grind the surface of the watch hands through a high-speed grinding wheel;

[0003] For example: Chinese patent application No. 201910877694.X discloses a watch hand grinding device, which includes a workbench, a watch hand fixing and rotating mechanism, a grinder, an angle adjustment mechanism, a waste chip collection mechanism, a lateral movement mechanism and a position adjustment mechanism; the watch hand fixing and rotating mechanism provided in the present invention can automatically realize the limit operation of the watch hand, and can make the watch hand rotate, and the position adjustment mechanism can realize the lifting operation of the grinder, which is convenient for adjusting the position of the grinder on the Z axis; the angle adjustment mechanism can make the grinder have a suitable tilt angle, so that the grinding wheel can chamfer the top surface of the watch hand, and the worker does not need to chamfer the watch hand subsequently, which brings great convenience to the worker, and adjusting the motor can make the transmission shaft rotate, so that the transmission shaft can drive the two rotating gears to rotate, so that the rotating gear can drive the transmission gear ring meshing with it to rotate, so that the transmission gear ring can drive the mounting plate to rotate, and the mounting plate can drive the grinder to rotate to a suitable angle.

[0004] At present, the processing of watch hands usually requires first using a fixture to fix the hands, and then using a grinding wheel to process them. However, during the grinding process, the position of the grinding wheel and the angle of the hands need to be adjusted many times, which is relatively cumbersome and can easily cause the position of the hands to shift, thus affecting the overall processing efficiency and the quality of the finished product.

[0005] Therefore, based on the above problems, we designed a grinding device for watch hands production. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a grinding device for producing watch hands, which solves the technical problem that the existing grinding device needs to adjust the position of the grinding wheel and the angle of the watch hands many times during the grinding process, the operation is relatively cumbersome, and it is easy to cause the position of the watch hands to shift, thereby affecting the overall processing efficiency and the quality of the finished product.

[0007] To achieve the above-mentioned object, according to an embodiment of the first aspect of the present invention, a grinding device for producing watch hands is provided, comprising a base, a processing chamber arranged on the base, and a sealing chamber cover rotatably arranged at the chamber opening of the processing chamber;

[0008] Wherein, a pair of translation guide rods are arranged at the inner upper end of the processing chamber;

[0009] Also includes:

[0010] A translation seat is movably sleeved on a pair of translation guide rods, a machine rod is arranged on the bottom surface of the translation seat, a servo DC motor is arranged on the side of the machine rod, a fixed block connected to the servo DC motor is rotatably arranged in the port of the machine rod, and a fine grinding die is arranged on the fixed block;

[0011] The lifting seat is arranged on the table of the processing warehouse. The lifting seat is provided with a clamping seat. A miniature double-headed screw is arranged on one side of the port of the clamping seat for horizontal rotation. Two symmetrical clamping rods are respectively sleeved on the miniature double-headed screw.

[0012] A further improvement is that a fixing block is provided on the side of the machine rod, a fixing bolt is provided on the fixing block, a slot is provided on the side of the fixing block, the side of the fine grinding mold is inserted into the slot and is installed on the fixing block by the fixing bolt.

[0013] A further improvement is that a prompt component is also provided, which includes a prompt light arranged outside the processing chamber, a mounting block arranged on a pair of translation guide rods, an elastic contact switch arranged on the mounting block and connected to the prompt light, and a contact block arranged on the side of the translation seat.

[0014] A further improvement is that a limit rod is connected to the port of the clamping seat above the miniature double-ended lead screw, and each of the clamping rods is movably mounted on the limit rod. Two opposite sections of threaded teeth are provided on the miniature double-ended lead screw, and each of the clamping rods is mounted on two opposite sections of threaded teeth on the miniature double-ended lead screw.

[0015] A further improvement is that the miniature double-ended lead screw is driven by a miniature DC servo motor externally arranged on the side of the clamping seat, the spindle of the miniature DC servo motor is connected to the miniature double-ended lead screw, and an electric telescopic rod is connected to the inner wall of one side of the processing chamber on the inner side of a pair of translation guide rods, and the rod end of the electric telescopic rod is connected to the side of the translation seat.

[0016] A further improvement is that each of the clamping rods is L-shaped, a clamping block is provided at the end of the inner wall surface of one of the clamping rods, a protrusion is provided at the middle end of the inner wall surface, and the other clamping rod is provided with a notch at the position corresponding to the clamping block and the protrusion.

[0017] A further improvement is that a mounting groove is provided on the lifting seat, a micro lifting cylinder is provided in the mounting groove, and the top surface of the rod body of the micro lifting cylinder is connected to the bottom surface of the clamping seat.

[0018] A further improvement is that a sound-absorbing panel is additionally provided on the inner wall of the processing chamber, the sound-absorbing panel is filled with sound-absorbing material, a rubber sound insulation strip is provided along the inner wall of the chamber opening, an observation window is provided on the sealed chamber cover, and double-layer tempered glass is provided in the observation window.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention places the watch hands to be processed between a pair of clamping rods, and allows the clamping block to be clamped in the middle hole of the watch hands, with the end inserted into the notch at the end of the watch hands. Next, driven by the power of a micro DC servo motor, the micro double-headed lead screw starts to work, and under the action of the two opposite threaded teeth of the micro double-headed lead screw, the pair of clamping rods are prompted to slowly move toward each other until they fit tightly. In this process, the clamping block and the protrusion will be accurately embedded in the preset notches on the other pair of clamping rods. This double locking mechanism not only firmly clamps the watch hands, but also achieves precise limiting and fixing of their position, effectively avoiding the position deviation of the hands during processing, thereby significantly improving the overall processing quality;

[0021] (2) The present invention adjusts the position of the prompt component on the translation guide rod. After the position is determined, the micro-lifting cylinder is used to provide power to drive the translation seat and the fine grinding mold to move along the preset path. When the side contact block of the translation seat touches the elastic contact switch, this signal will immediately trigger the control system, light up the prompt light, and clearly indicate that the specified position has been reached;

[0022] (3) The present invention starts the micro-lifting cylinder inside the lifting seat, and uses the rod of the micro-lifting cylinder to drive the clamping seat and the height of the watch hand to be processed to rise until the top surface of the watch hand to be processed fits with the fine grinding mold, so that the servo DC motor drives the fixed block and the fine grinding mold to rotate and grinds the surface of the watch hand; similarly, the micro-lifting cylinder is used to fit the bottom surface of the watch hand to be processed with the fine grinding mold, and the bottom surface of the watch hand is ground. This design eliminates the need to adjust the position of the grinding wheel and the angle of the watch hand multiple times, reduces the processing steps, and thus improves the overall processing efficiency and the quality of the finished product. In addition, by using the sound-absorbing material filled inside the sound-absorbing board, setting a rubber sound insulation strip at the mouth of the processing chamber and double-layer tempered glass, the sealing performance can be improved, which greatly effectively reduces the noise generated during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the sound-absorbing board and the rubber sound insulation strip of the present invention installed on the processing chamber;

[0025] Figure 3 It is a schematic diagram of the surface cross-section structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the watch hand of the present invention being assembled in the fixed clamping device from a top view;

[0027] Figure 5 It is a schematic diagram of the structure of the clamping block and the protruding block clamped on the watch needle of the present invention;

[0028] Figure 6 It is a schematic diagram of the installation structure of the bottom surface grinding assembly of the translation seat of the present invention.

[0029] Markings in the figure:

[0030] 1. Base;

[0031] 2. Processing chamber; 21. Warning light; 22. Sealed chamber cover; 23. Double-layer tempered glass; 24. Translation guide rod;

[0032] 3. Translation seat; 31. Machine rod; 32. Fine grinding die; 33. Servo DC motor; 301. Fixing block; 302. Fixing bolt; 303. Slot; 304. Electric telescopic rod;

[0033] 4. Lifting seat; 41. Clamping seat; 42. Micro double-ended lead screw; 421. Clamping rod; 422. Block; 423. Bump; 424. Notch; 43. Limiting rod; 44. Micro DC servo motor; 45. Mounting slot; 46. Micro lifting cylinder;

[0034] 5. Sound-absorbing panels; 51. Rubber sound insulation strips;

[0035] 6. Prompt assembly; 61. Mounting block; 62. Elastic contact switch; 63. Contact block. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0037] like Figure 1 As shown, a grinding device for producing watch hands comprises a base 1, a processing chamber 2 arranged on the base 1 and a sealing chamber cover 22 rotatably arranged at the chamber opening of the processing chamber 2; wherein a pair of translation guide rods 24 are arranged at the inner upper end of the processing chamber 2;

[0038] like Figure 3 and Figure 6 As shown, when implemented, it includes: a translation seat 3, which is movably sleeved on the translation guide rod 24, a machine rod 31 is arranged on the bottom surface of the translation seat 3, a servo DC motor 33 is arranged on the side of the machine rod 31, a fixed block 301 connected to the servo DC motor 33 is rotatably arranged in the port of the machine rod 31, and a fine grinding mold 32 is arranged on the fixed block 301;

[0039] Specifically, as a preferred embodiment, a fixing block 301 is provided on the side of the machine rod 31, a fixing bolt 302 is provided on the fixing block 301, a slot 303 is provided on the side of the fixing block 301, and the side of the fine grinding die 32 is inserted into the slot 303 and installed on the fixing block 301 by the fixing bolt 302, so as to realize the disassembly and assembly of the fine grinding die 32, so as to be applicable to the grinding of needles of different specifications;

[0040] Specifically, as a preferred embodiment, an inner wall of one side of the processing chamber 2 is connected to an electric telescopic rod 304 located inside a pair of translation guide rods 24, and the rod end of the electric telescopic rod 304 is connected to the side of the translation seat 3 to drive the translation seat 3 to slide left and right;

[0041] like Figures 3 to 5 As shown, when implemented, it includes: a lifting seat 4, which is arranged on the table of the processing chamber 2, and a clamping seat 41 is arranged on the lifting seat 4. A micro double-headed screw 42 is arranged on one side of the port of the clamping seat 41 for horizontal rotation, and two symmetrical clamping rods 421 are respectively sleeved on the micro double-headed screw 42;

[0042] Specifically, as a preferred embodiment, a limit rod 43 is connected to the port of the clamping seat 41 above the micro double-headed lead screw 42, each clamping rod 421 is movably sleeved on the limit rod 43, and two sections of opposite thread teeth are provided on the micro double-headed lead screw 42. Each clamping rod 421 is sleeved on two sections of opposite thread teeth on the micro double-headed lead screw 42. The micro double-headed lead screw 42 is driven by a micro DC servo motor 44 externally arranged on the side of the clamping seat 41, and the main shaft of the micro DC servo motor 44 is connected to the micro double-headed lead screw 42;

[0043] Specifically, as a preferred embodiment, the two clamping rods 421 are both L-shaped, a clamping block 422 is provided at the end of the inner wall surface of one clamping rod 421, a convex block 423 is provided at the middle end of the inner wall surface, and the other clamping rod 421 is provided with a notch 424 at the position corresponding to the clamping block 422 and the convex block 423;

[0044] Specifically, as a preferred embodiment, the lifting seat 4 is provided with a mounting groove 45, and a micro-lifting cylinder 46 is provided in the mounting groove 45, and the top surface of the rod body of the micro-lifting cylinder 46 is connected to the bottom surface of the clamping seat 41;

[0045] like Figure 1 and Figure 2 As shown, in this embodiment, a sound-absorbing board 5 is further provided on the inner wall of the processing chamber 2, and the sound-absorbing board 5 is filled with sound-absorbing material. A rubber sound-insulating strip 51 is provided along the inner wall of the chamber opening of the processing chamber 2, and an observation window is provided on the sealed chamber cover 22. A double-layer tempered glass 23 is provided in the observation window to improve the sealing performance and reduce the noise generated during processing;

[0046] like Figure 3 As shown, in this embodiment, a prompt component 6 is additionally provided, which includes a prompt light 21 provided outside the processing chamber 2, a mounting block 61 provided on the translation guide rod 24, an elastic contact switch 62 provided on the mounting block 61 and connected to the prompt light 21, and a contact block 63 provided on the side of the translation seat 3. The micro-lifting cylinder 46 provides power to drive the translation seat 3 and the fine grinding mold 32 to move along the preset path. When the side contact block 63 of the translation seat 3 touches the elastic contact switch 62, this signal will immediately trigger the control system, light up the prompt light 21, and clearly indicate that the designated position has been reached.

[0047] like Figures 1 to 6 As shown, in this embodiment, a PLC control box is pre-configured before implementation in the application document, and a control system is pre-implanted on the control board inside the PLC control box to control the servo DC motor 33, the micro DC servo motor 44 and the micro lifting cylinder 46. This part is the prior art, and the working principle has been disclosed. The application document only improves the shortcomings of the existing grinding device during the grinding process, that is, the position of the grinding wheel and the angle of the pointer need to be adjusted many times, the operation is relatively cumbersome, and it is easy to cause the position of the pointer to shift, thereby affecting the overall processing efficiency and the quality of the finished product. It does not involve other aspects; the working principle of the grinding device for the production of watch hands is introduced as follows:

[0048] When the present invention is installed and used;

[0049] Step 1: The on-site staff selects a suitable fine grinding mold 32 according to the specifications of the watch hands, inserts the side of the fine grinding mold 32 into the slot 303, and installs it on the fixing block 301 through the fixing bolt 302 to realize the disassembly and assembly of the fine grinding mold 32;

[0050] Step 2: On-site staff will place the watch hands to be processed between a pair of clamping rods 421, and let the clamping block 422 be stuck in the middle hole of the watch hands, and the tip will be inserted into the notch at the end of the watch hands. Next, driven by the power of the micro DC servo motor 44, the micro double-headed screw 42 starts to work. Under the action of the two opposite threaded teeth of the micro double-headed screw 42, the pair of clamping rods 421 are prompted to slowly move toward each other until they fit tightly. In this process, the clamping block 422 and the protrusion 423 will be accurately embedded in the preset notch 424 on the other pair of clamping rods 421. This double locking mechanism not only firmly clamps the watch hands, but also realizes the precise limit and fixation of their position, effectively avoiding the position deviation of the hands during processing, thereby significantly improving the overall processing quality;

[0051] Step 3: According to the specifications of the hands of each batch of clocks and watches, adjust the position of the prompt component 6 on the translation guide rod 24. After the position is determined, the micro-lifting cylinder 46 is used to provide power to drive the translation seat 3 and the fine grinding mold 32 to move along the preset path. When the side contact block 63 of the translation seat 3 touches the elastic contact switch 62, this signal will immediately trigger the control system, light up the prompt light 21, and clearly indicate that the specified position has been reached;

[0052] Step 4: Start the micro-lifting cylinder 46 inside the lifting seat 4, and use the rod of the micro-lifting cylinder 46 to drive the clamping seat 41 and the height of the watch needle to be processed to rise until the top surface of the watch needle to be processed fits with the fine grinding mold 32, so that the servo DC motor 33 drives the fixed block 301 and the fine grinding mold 32 to rotate, and grind the surface of the needle; similarly, use the micro-lifting cylinder 46 to fit the bottom surface of the watch needle to be processed with the fine grinding mold 32, and grind the bottom surface of the needle. This design does not need to adjust the position of the grinding wheel and the angle of the needle many times, reduces the processing steps, and thus improves the overall processing efficiency and product quality. In addition, by using the sound-absorbing material filled in the sound-absorbing board 5, setting the rubber sound insulation strip 51 and the double-layer tempered glass 23 at the mouth of the processing chamber 2, the sealing performance can be improved, which can greatly and effectively reduce the noise generated during processing.

[0053] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A grinding device for producing watch hands, comprising a base (1), a processing chamber (2) arranged on the base (1), and a sealing chamber cover (22) rotatably arranged at the chamber opening of the processing chamber (2); in, A pair of translation guide rods (24) are provided at the inner upper end of the processing chamber (2); It is characterized by further comprising: A translation seat (3) is movably sleeved on a pair of translation guide rods (24); a machine rod (31) is arranged on the bottom surface of the translation seat (3); a servo DC motor (33) is arranged on the side of the machine rod (31); a fixed block (301) connected to the servo DC motor (33) is rotatably arranged in the port of the machine rod (31); and a fine grinding die (32) is arranged on the fixed block (301); A lifting seat (4) is arranged on the table of the processing chamber (2), and a clamping seat (41) is arranged on the lifting seat (4). A miniature double-headed lead screw (42) is arranged on one side of the port of the clamping seat (41) for transverse rotation, and two symmetrical clamping rods (421) are respectively sleeved on the miniature double-headed lead screw (42).

2. A grinding device for producing watch hands according to claim 1, characterized in that: A fixing block (301) is arranged on the side of the machine rod (31), a fixing bolt (302) is arranged on the fixing block (301), a slot (303) is arranged on the side of the fixing block (301), the side of the fine grinding die (32) is inserted into the slot (303) and is mounted on the fixing block (301) via the fixing bolt (302).

3. A grinding device for producing watch hands according to claim 1, characterized in that: A prompting assembly (6) is also provided, the prompting assembly (6) comprising a prompting light (21) arranged outside the processing chamber (2), a mounting block (71) arranged on a pair of translation guide rods (24), an elastic contact switch (72) arranged on the mounting block (71) and connected to the prompting light (21), and a contact block (73) arranged on the side of the translation seat (3).

4. A grinding device for producing watch hands according to claim 1, characterized in that: A limiting rod (43) is connected to the port of the clamping seat (41) above the miniature double-ended lead screw (42), and each of the clamping rods (421) is movably mounted on the limiting rod (43). Two sections of opposite thread teeth are provided on the miniature double-ended lead screw (42), and each of the clamping rods (421) is mounted on two sections of opposite thread teeth on the miniature double-ended lead screw (42).

5. A grinding device for producing watch hands according to claim 4, characterized in that: The micro double-ended lead screw (42) is driven by a micro DC servo motor (44) externally arranged on the side of the clamping seat (41); the main shaft of the micro DC servo motor (44) is connected to the micro double-ended lead screw (42); an electric telescopic rod is connected to the inner wall of one side of the processing chamber (2) on the inner side of a pair of translation guide rods (24); and the rod end of the electric telescopic rod is connected to the side of the translation seat (3).

6. A grinding device for producing watch hands according to claim 1, characterized in that: Each of the clamping rods (421) is L-shaped, a clamping block (422) is provided at the end of the inner wall surface of one of the clamping rods (421), a protrusion (423) is provided at the middle end of the inner wall surface, and the other clamping rod (421) is provided with a notch at the position corresponding to the clamping block (422) and the protrusion (423).

7. A grinding device for producing watch hands according to claim 1, characterized in that: The lifting seat (4) is provided with a mounting groove (45), a micro-lifting cylinder (46) is provided in the mounting groove (45), and the top surface of the rod body of the micro-lifting cylinder (46) is connected to the bottom surface of the clamping seat (41).

8. The grinding device for producing watch hands according to claim 1, characterized in that: In addition, a sound-absorbing panel (5) is arranged on the inner wall of the processing chamber (2), and the sound-absorbing panel (5) is filled with sound-absorbing material. The processing chamber (2) is provided with a rubber sound insulation strip along the inner wall of the chamber opening. The sealed chamber cover (22) is provided with an observation window, and double-layer tempered glass (23) is arranged in the observation window.

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