Watch shell forming processing method

Abstract

The invention relates to the technical field of watch shell processing, and discloses a watch shell forming processing method which comprises the following steps: S1, blank manufacturing: cutting a metal material into proper sizes and shapes by using related cutting equipment to form a metal bottom cover blank; s2, machining is conducted, specifically, a lathe is used for conducting preliminary machining on the metal bottom cover blank, most of redundant materials are removed, and the contour of the shell bottom cover is formed; s3, surface treatment is conducted, specifically, the surface of the shell bottom cover is polished through a polishing tool, and machining traces and burrs are removed; and S4, size detection: measuring the key size of the shell bottom cover by using a measuring tool to ensure that the size meets the design requirement. According to the watch shell forming machining method, the problems that in the prior art, when a cutting blade is adjusted, an operator needs to manually adjust the blade one by one, so that the adjusting efficiency of the blade is affected, errors can be generated, and the cutting precision is affected can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of watch case processing, and in particular to a watch case forming processing method. Background Art

[0002] The watch case is usually the outer shell component of the watch body, mainly composed of the case body, watch mirror and bottom cover related parts. It is mainly used to protect the internal movement related components. The more common ones are stainless steel cases, tungsten steel cases, ceramic cases, titanium alloy cases, etc. During the processing of the bottom cover, the staff will place the relevant raw materials on the cutting blade, and use a laser cutter to cut it into a suitable bottom cover blank, and cooperate with other processing procedures to obtain the case bottom cover.

[0003] When cutting raw materials of different thicknesses, the spacing between the blades usually needs to be adjusted. Raw materials of different thicknesses require different supports or cutting paths. Thick plates require larger spacing to avoid excessive extrusion, while thin plates require tighter spacing to ensure cutting accuracy. However, when adjusting the cutting blades, the operator needs to manually adjust each blade one by one, which affects the adjustment efficiency of the blades, and will produce errors, affecting the cutting accuracy. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a watch case forming processing method, which can effectively solve the problem in the prior art that when adjusting the cutting blade, the operator needs to manually adjust the blade one by one, thereby affecting the adjustment efficiency of the blade, and will cause errors and affect the cutting accuracy.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a watch case forming method, comprising:

[0008] S1. Blank manufacturing: using relevant cutting equipment to cut metal materials into suitable sizes and shapes to form metal bottom cover blanks;

[0009] S2, machining, using a lathe to perform preliminary machining on the metal bottom cover blank, removing most of the excess material and forming the outline of the shell bottom cover;

[0010] S3, surface treatment, use a grinding tool to grind the surface of the bottom cover of the shell to remove processing marks and burrs;

[0011] S4. Dimension detection: Use measuring tools to measure the key dimensions of the bottom cover of the shell to ensure that the dimensions meet the design requirements;

[0012] Wherein, the cutting device in S1 includes a cutting part, the cutting part includes a frame, and the frame is slidably connected to a laser cutter via a translation unit arranged inside the frame;

[0013] A placement part, the placement part includes a base, the top of the base is fixedly connected to the bottom of the frame, the top of the base is provided with a limiter for locking the material to be cut, the top of the base is fixedly connected with a variable pitch slide, the variable pitch slide is slidably connected to a U-shaped frame through a slider arranged inside the base, and the U-shaped frame is provided with a plurality of U-shaped frames and distributed along the variable pitch slide array, and a cutting blade for supporting the material to be cut is provided inside the U-shaped frame;

[0014] Wherein, a cleaning component for cleaning slag is provided on the surface of the cutting blade, and a switching component for driving the cleaning component is provided in the U-shaped frame.

[0015] Furthermore, the limiting member includes a slide rail, which is fixedly connected to the top of the base, and a locking seat is slidably connected to the top of the slide rail, and two locking seats are provided and symmetrically distributed along the left and right sides of the base, a placement groove is provided on the top of the locking seat, and a locking plate is detachably installed on the top of the locking seat by bolts, and a driving unit that can be used to adjust the position of the locking seat is provided at the bottom of the base.

[0016] Furthermore, the cleaning assembly includes a slide groove, which is opened on the surface of the cutting blade. A movable frame is slidably connected in the slide groove, and a groove is opened in the movable frame to fit the sharp surface of the cutting blade. A counterweight block is fixedly connected to the surface of the movable frame, and the cutting blade is fixedly connected to a magnetic part that is magnetically connected to the counterweight block through a bracket arranged at its end.

[0017] Furthermore, the switching assembly includes a connecting frame, which is connected to the inner wall of the U-shaped frame through an elastic member arranged at the bottom of the connecting frame, and a slot is opened on the surface of the U-shaped frame. A support plate fixedly connected to the bottom of the cutting blade is rotatably connected in the connecting frame, and a rotating shaft passing through the side wall of the connecting frame is fixedly connected in the support plate, and a movable rod sliding with the slot is detachably installed at the end of the rotating shaft, and a gear is fixedly connected to the circumferential outer surface of the movable rod.

[0018] Furthermore, the connecting frame is slidably connected to the limiting frame through an open groove opened on its surface, and the limiting frame is connected to the inner wall of the open groove through a strong spring arranged at the bottom, and a limiting hole is opened on the circumferential outer surface of the support plate that fits with the circumferential outer surface of the limiting frame, and the connecting frame is fixedly connected to the electromagnetic block through an edge extension plate arranged on its outside, and the electromagnetic block is connected to the bottom of the limiting frame by magnetic force.

[0019] Furthermore, a guide frame is fixedly connected inside the U-shaped frame, and the guide frame is provided with two and symmetrically distributed along the center of the U-shaped frame, an L-shaped plate is slidably connected inside the guide frame, and the bottom of the L-shaped plate is connected to the telescopic mechanism arranged inside the U-shaped frame, and an abutment rod is fixedly connected to the surface of the connecting frame and abuts against the cross plate of the L-shaped plate.

[0020] Furthermore, a movable hole is provided on the surface of the vertical plate of the L-shaped plate, and guide grooves are provided on the side walls on both sides of the movable hole, and the guide grooves are of Z-shaped design. The guide grooves are fixedly connected to a rack meshing with a gear through a movable block arranged inside the guide grooves, and a counterweight plate is fixedly connected to the surface of the rack.

[0021] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] The present invention is provided with a cleaning component and a switching component. Compared with the traditional cutting blade installation method, there is no need to fix the two ends of the cutting blade with bolts. The cutting blade spacing can be adjusted quickly and conveniently, which can save a lot of installation and adjustment time and significantly improve work efficiency. In addition, the switching component can be used to control the cutting blade to tilt. The counterweight block is affected by the downward force of its own gravity, and then the counterweight block will separate from the magnetic part and drive the movable frame to move along the slide groove. The groove can scrape the surface of the cutting blade to remove slag residue. There is no need to stop the machine for manual cleaning, which reduces the idle time of equipment and improves the continuous operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a flow chart of a watch case forming method according to an embodiment of the present invention;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a cutting part according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the placement part according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the U-shaped frame and the cutting blade being three-dimensionally separated according to an embodiment of the present invention;

[0028] Figure 5 For the embodiment of the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 6 For the embodiment of the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0030] Figure 7 This is a schematic diagram of the structure of the three-dimensional separation of the switching components according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the L-shaped plate and the U-shaped frame being three-dimensionally separated in an embodiment of the present invention;

[0032] Fig. 9 For the embodiment of the present invention Figure 8 Enlarged schematic diagram of the structure at point C in the middle.

[0033] The numbers in the figure represent: 1, cutting part; 11, frame; 12, laser cutter; 2, placement part; 21, base; 22, limiter; 221, slide rail; 222, locking seat; 223, placement slot; 224, locking plate; 225, driving unit; 23, variable pitch slide; 24, U-shaped frame; 25, cutting blade; 26, cleaning component; 261, slide slot; 262, movable frame; 263, notch; 264, matching Weight block; 265, magnetic part; 27, switching assembly; 271, connecting frame; 2711, limiting frame; 2712, electromagnetic block; 272, slot hole; 273, support plate; 2731, limiting hole; 274, rotating shaft; 275, movable rod; 276, gear; 277, guide frame; 278, L-shaped plate; 2781, movable hole; 2782, guide slot; 2783, rack; 2784, counterweight plate; 279, abutment rod. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] Example:

[0037] See also Figure 1-Figure 9 The present invention provides a technical solution: a watch case forming method, comprising:

[0038] S1. Blank manufacturing: using relevant cutting equipment to cut metal materials into suitable sizes and shapes to form metal bottom cover blanks;

[0039] S2, machining, using a lathe to perform preliminary machining on the metal bottom cover blank, removing most of the excess material and forming the outline of the shell bottom cover;

[0040] S3, surface treatment, use a grinding tool to grind the surface of the bottom cover of the shell to remove processing marks and burrs;

[0041] S4. Dimension detection: Use measuring tools to measure the key dimensions of the bottom cover of the shell to ensure that the dimensions meet the design requirements;

[0042] The cutting device in S1 includes a cutting part 1, and the cutting part 1 includes a frame 11, and the frame 11 is slidably connected to a laser cutter 12 through a translation unit arranged inside the frame 11;

[0043] The placing part 2 includes a base 21, the top of the base 21 is fixedly connected to the bottom of the frame 11, the top of the base 21 is provided with a limiter 22 for locking the material to be cut, the top of the base 21 is fixedly connected with a variable pitch slide 23, the variable pitch slide 23 is slidably connected with a U-shaped frame 24 through a slider arranged inside the base 21, and the U-shaped frame 24 is provided with a plurality of U-shaped frames 24 and distributed along the variable pitch slide 23 array, and a cutting blade 25 for supporting the material to be cut is arranged inside the U-shaped frame 24;

[0044] A cleaning component 26 for cleaning slag is disposed on the surface of the cutting blade 25 , and a switching component 27 for driving the cleaning component 26 is disposed in the U-shaped frame 24 .

[0045] The limiting member 22 includes a slide rail 221, which is fixedly connected to the top of the base 21. A locking seat 222 is slidably connected to the top of the slide rail 221, and two locking seats 222 are provided and are symmetrically distributed along the left and right sides of the base 21. A placement groove 223 is provided at the top of the locking seat 222. A locking plate 224 is detachably installed at the top of the locking seat 222 by bolts. A driving unit 225 that can be used to adjust the position of the locking seat 222 is provided at the bottom of the base 21.

[0046] The cleaning assembly 26 includes a slide groove 261, which is opened on the surface of the cutting blade 25. A movable frame 262 is slidably connected in the slide groove 261, and a groove 263 is opened in the movable frame 262 to fit the sharp surface of the cutting blade 25. A counterweight block 264 is fixedly connected to the surface of the movable frame 262. The cutting blade 25 is fixedly connected to a magnetic part 265 magnetically connected to the counterweight block 264 through a bracket set at its end.

[0047] The switching assembly 27 includes a connecting frame 271, which is connected to the inner wall of the U-shaped frame 24 through an elastic member arranged at the bottom thereof. A slot 272 is opened on the surface of the U-shaped frame 24. A support plate 273 fixedly connected to the bottom of the cutting blade 25 is rotatably connected inside the connecting frame 271, and a rotating shaft 274 passing through the side wall of the connecting frame 271 is fixedly connected inside the support plate 273. A movable rod 275 sliding with the slot 272 is detachably installed at the end of the rotating shaft 274, and a gear 276 is fixedly connected to the outer surface of the circumference of the movable rod 275.

[0048] The connecting frame 271 is slidably connected to the limiting frame 2711 through an open groove opened on its surface, and the limiting frame 2711 is connected to the inner wall of the open groove through a strong spring arranged at the bottom. The outer surface of the support plate 273 is provided with a limiting hole 2731 that fits the outer surface of the limiting frame 2711. The connecting frame 271 is fixedly connected to the electromagnetic block 2712 through an edge extension plate arranged on its outer side, and the electromagnetic block 2712 is connected to the bottom of the limiting frame 2711 through magnetic force.

[0049] A guide frame 277 is fixedly connected inside the U-shaped frame 24, and the guide frame 277 is provided with two and symmetrically distributed along the center of the U-shaped frame 24, an L-shaped plate 278 is slidably connected inside the guide frame 277, and the bottom of the L-shaped plate 278 is connected to the telescopic mechanism arranged inside the U-shaped frame 24, and an abutment rod 279 abutting against the horizontal plate of the L-shaped plate 278 is fixedly connected to the surface of the connecting frame 271.

[0050] A movable hole 2781 is provided on the surface of the vertical plate of the L-shaped plate 278, and guide grooves 2782 are provided on the side walls on both sides of the movable hole 2781. The guide groove 2782 is designed in a Z shape, and is fixedly connected to a rack 2783 meshing with the gear 276 through a movable block arranged inside the guide groove 2782, and a counterweight plate 2784 is fixedly connected to the surface of the rack 2783.

[0051] The principle and advantages of the watch case forming method:

[0052] In actual use, the operator adjusts the cutting blade 25 according to the thickness of the stainless steel plate to be cut, and by controlling the variable pitch slide 23 and the driving unit 225, the spacing between adjacent U-shaped frames 24 can be adjusted, and the use spacing between adjacent cutting blades 25 can be realized, which can be suitable for stainless steel plates of different thicknesses. After the adjustment is completed, the stainless steel plate to be cut is placed in the placement groove 223 on the top of the locking seat 222, and then the locking plate 224 is fixed with bolts, thereby completing the locking and fixing of the stainless steel plate to be cut. A flexible rubber pad (rubber pad) is installed between the placement groove 223 and the locking plate 224. The flexible rubber pad has a certain elasticity and viscosity, and can fill the small gap between the stainless steel plate and the placement groove 223 and the locking plate 224, so that the contact is closer, thereby increasing the friction, preventing the stainless steel plate from sliding or displacing in a fixed position, and ensuring the stability of its installation. The flexible rubber pad is soft in texture and can form an isolation layer between the stainless steel plate and other components, effectively avoiding surface scratches caused by friction, collision, etc.

[0053] It is worth mentioning that the driving unit 225 is driven by a double-headed screw. Since the threads at both ends of the double-headed screw have opposite rotation directions, when the double-headed screw rotates with the cooperation of the driving member, the connecting plate threadedly connected on its circumferential outer surface will drive the two locking seats 222 to move synchronously, thereby ensuring that the moving distances of the two locking seats 222 are the same.

[0054] The present invention adopts the variable pitch slide 23 and the drive unit 225, which has the following advantages:

[0055] Advantage 1: The distance between adjacent cutting blades 25 can be adjusted according to the thickness of the stainless steel plate to be cut, so that the equipment can be suitable for cutting stainless steel plates of different thicknesses, which greatly expands the application range of the laser cutter 12, improves the versatility of the equipment, reduces the time required for downtime adjustment due to different plate thicknesses, has a high degree of automation, simplifies the adjustment steps of the cutting blade 25, and avoids errors caused by manual adjustment of the cutting blade 25.

[0056] Advantage 2: Compared with the traditional installation method of the cutting blade 25, the cutting blade 25 is fixed by using a U-shaped frame in conjunction with the relevant structure inside it. There is no need to fix the two ends of the cutting blade 25 with bolts. The spacing between the cutting blades 25 can be adjusted quickly and conveniently. When the spacing between the cutting blades 25 needs to be frequently adjusted to adapt to different cutting tasks, a lot of installation and adjustment time can be saved, which significantly improves work efficiency.

[0057] Advantage three, when the variable pitch slide 23 adjusts the spacing between the cutting blades 25, the driving unit 225 at the bottom of the base 21 synchronously moves the locking seat 222, so that no matter how the distance between the cutting blades 25 changes, the locking seat 222 cooperates with the locking plate 224 to lock the stainless steel plate. There is no need to worry about the plate being unable to be fixed due to changes in the blade spacing, which increases the flexibility of the device and facilitates the operator to quickly adjust the equipment according to different cutting tasks.

[0058] After the stainless steel plate to be cut is fixed, the staff can cut the stainless steel plate by controlling the translation unit in the frame 11. When the cutting is completed, the slag generated during the cutting process will adhere to the surface of the cutting blade 25. At this time, one of the telescopic mechanisms in the U-shaped frame 24 will drive the L-shaped plate 278 on the same side to move downward along the guide frame 277, and the cross plate of the L-shaped plate 278 cooperates with the abutment rod 279 to move the connecting frame 271 and the cutting blade 25 downward as a whole. Since the other telescopic mechanism in the U-shaped frame 24 remains stationary, the other abutment rod 279 will not interfere with the movement of the connecting frame 271 (the abutment rod 279 and the L-shaped plate 278 are made of high-strength materials to avoid deformation during use and affect normal use). As the L-shaped plate 278 moves, the counterweight plate 2784 on the rack 2783 (a protrusion is provided on the surface of the counterweight plate 2784, which is light and will not affect the movement of the rack 2783) will contact the guide frame 277, and then the counterweight plate 2784 will move along the guide groove 2782. Since the guide groove 2782 is designed in a Z shape, when the counterweight plate 2784 moves from one vertical groove in the guide groove 2782 to another vertical groove, the rack 2783 will approach the position close to the gear 276. As the rack 2783 moves in the guide groove 2782, the rack 2783 and the gear 276 engage with each other, and then the rotating shaft 274 can be driven to drive the cutting blade 25 to rotate, so that the cutting blade 25 is tilted at a certain angle.

[0059] As the connecting frame 271 moves downward, the electromagnetic block 2712 starts to work, and the adsorption force generated by the electromagnetic block 2712 overcomes the elastic force of the strong spring itself and instantly moves the limit frame 2711 downward, so that the limit member 22 is separated from the limit hole 2731 on the surface of the support plate 273, and will not hinder the cutting blade 25 from rotating in the connecting frame 271. When the cutting blade 25 tilts, the counterweight 264 is affected by the downward force of its own gravity, which will overcome the adsorption force generated by the magnetic part 265, and then the counterweight 264 will separate from the magnetic part 265 (the counterweight 264 is made of high-density material and has a large mass), driving the movable frame 262 to move along the slide groove 261, and the notch 263 will move in line with the sharp surface of the cutting blade 25, so as to scrape the surface of the cutting blade 25, scrape off the slag and take it away, making the cleaning more thorough. After the cleaning is completed, the counterweight 264 drives the movable frame 262 to move to the lower end of the cutting blade 25, and the magnetic part 265 will adsorb the counterweight 264.

[0060] After cleaning is completed, the telescopic mechanism will drive the L-shaped plate 278 to reset. When the L-shaped plate 278 moves upward, due to the self-gravity of the counterweight plate 2784, the counterweight plate 2784 and the rack 2783 will always stay in the position in contact with the guide frame 277. When the connecting frame 271 and the cutting blade 25 are reset upward, due to the mutual engagement between the gear 276 and the rack 2783, the gear 276 drives the rotating shaft 274 to restore the cutting blade 25 to a horizontal state, and the electromagnet will stop working, and the strong spring will reset the limit frame 2711. At this time, the limiting of the cutting blade 25 is completed, which can ensure that the cutting blade 25 remains stable during use. Since the counterweight block 264 and the movable frame 262 will be at both ends of the cutting blade 25 when cleaning the slag on the surface of the cutting blade 25, two sets of telescopic mechanisms are provided in the U-shaped frame 24, which can control the tilting direction of the cutting blade 25 and always keep one end with the counterweight block 264 and the movable frame 262 tilted upward.

[0061] It is worth noting that the laser cutter 12 cuts the stainless steel plate along the array direction of the cutting blades 25. When the upper part of one of the cutting blades 25 completes cutting, the laser cutter 12 will move to the upper part of the next cutting blade 25 for cutting, so that the cleaning component 26 can clean the cutting blade 25 in time without affecting the next cutting use.

[0062] The present invention adopts the cleaning component 26 and the switching component 27, which has the following advantages:

[0063] Advantage 1: The switching component 27 can be used to control the cutting blade 25 to tilt. The counterweight block 264 is affected by the downward force of its own gravity and will overcome the adsorption force generated by the magnetic part 265. Then the counterweight block 264 will separate from the magnetic part 265 and drive the movable frame 262 to move along the slide groove 261. The notch 263 can scrape the surface of the cutting blade 25. The notch 263 of the movable frame 262 moves in line with the sharp surface of the blade to physically scrape the surface and completely remove the slag residue, thereby ensuring that the contact surface between the blade and the material is always clean, avoiding slag adhering to the surface of the cutting blade 25, resulting in uneven contact with the material and affecting the cutting accuracy.

[0064] Advantage two, through the Z-shaped guide groove 2782 and the gear 276 rack 2783 linkage, the cutting blade 25 can be tilted, scraped and cleaned, and reset to a horizontal state, the electromagnetic block 2712 adsorbs the limit frame 2711 to unlock, the gravity component of the counterweight block 264 drives the movable frame 262 to move, and the magnetic part 265 re-fixes the counterweight block 264 after resetting, without stopping the machine for manual cleaning, reducing the idle time of equipment and improving the continuous operation efficiency.

[0065] Advantage three: through the Z-shaped guide groove 2782, the rack 2783 is initially in the movable hole 2781 and will not mesh with the gear 276. When the rack 2783 moves along the Z-shaped guide groove 2782, the rack 2783 will move a short distance toward the direction close to the gear 276, thereby achieving mutual meshing between the gear 276 and the rack 2783, which can avoid unnecessary contact between the rack 2783 and the gear 276 when the L-shaped plate 278 moves, effectively extending the service life of the gear 276 and the rack 2783.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A watch case forming method, characterized in that: include: S1. Blank manufacturing: using relevant cutting equipment to cut metal materials into suitable sizes and shapes to form metal bottom cover blanks; S2, machining, using a lathe to perform preliminary machining on the metal bottom cover blank, removing most of the excess material and forming the outline of the shell bottom cover; S3, surface treatment, use a grinding tool to grind the surface of the bottom cover of the shell to remove processing marks and burrs; S4. Dimension detection: Use measuring tools to measure the key dimensions of the bottom cover of the shell to ensure that the dimensions meet the design requirements; The cutting device in S1 comprises a cutting part (1), the cutting part (1) comprises a frame (11), and the frame (11) is slidably connected to a laser cutter (12) via a translation unit arranged inside the frame (11); A placement portion (2), the placement portion (2) comprising a base (21), the top of the base (21) being fixedly connected to the bottom of the frame (11), the top of the base (21) being provided with a limiter (22) for locking the material to be cut, the top of the base (21) being fixedly connected with a variable pitch slide (23), the variable pitch slide (23) being slidably connected to a U-shaped frame (24) via a slider arranged inside the variable pitch slide (23), and the U-shaped frame (24) being provided with a plurality of U-shaped frames (24) and distributed in an array along the variable pitch slide (23), and a cutting blade (25) for supporting the material to be cut being provided inside the U-shaped frame (24); A cleaning component (26) for cleaning slag is provided on the surface of the cutting blade (25), and a switching component (27) for driving the cleaning component (26) is provided in the U-shaped frame (24).

2. A watch case forming method according to claim 1, characterized in that: The position-limiting member (22) comprises a slide rail (221), the slide rail (221) is fixedly connected to the top of the base (21), a locking seat (222) is slidably connected to the top of the slide rail (221), two locking seats (222) are provided and are symmetrically distributed along the base (21), a placement groove (223) is provided at the top of the locking seat (222), a locking plate (224) is detachably mounted on the top of the locking seat (222) by means of bolts, and a driving unit (225) for adjusting the position of the locking seat (222) is provided at the bottom of the base (21).

3. A watch case forming method according to claim 1, characterized in that: The cleaning assembly (26) comprises a slide groove (261), wherein the slide groove (261) is provided on the surface of the cutting blade (25), a movable frame (262) is slidably connected in the slide groove (261), and a notch (263) is provided in the movable frame (262) to fit with the sharp surface of the cutting blade (25), a counterweight (264) is fixedly connected to the surface of the movable frame (262), and the cutting blade (25) is fixedly connected to a magnetic member (265) magnetically connected to the counterweight (264) via a bracket provided at the end thereof.

4. A watch case forming method according to claim 1, characterized in that: The switching assembly (27) comprises a connecting frame (271), wherein the connecting frame (271) is connected to the inner wall of the U-shaped frame (24) via an elastic member arranged at the bottom thereof, and a slot hole (272) is provided on the surface of the U-shaped frame (24). A support plate (273) fixedly connected to the bottom of the cutting blade (25) is rotatably connected inside the connecting frame (271), and a rotating shaft (274) penetrating the side wall of the connecting frame (271) is fixedly connected inside the support plate (273). A movable rod (275) sliding with the slot hole (272) is detachably mounted at the end of the rotating shaft (274), and a gear (276) is fixedly connected to the circumferential outer surface of the movable rod (275).

5. A watch case forming method according to claim 4, characterized in that: The connecting frame (271) is slidably connected to the limiting frame (2711) via an open groove provided on its surface, and the limiting frame (2711) is connected to the inner wall of the open groove via a strong spring provided at the bottom, and a limiting hole (2731) is provided on the circumferential outer surface of the support plate (273) and is in contact with the circumferential outer surface of the limiting frame (2711), and the connecting frame (271) is fixedly connected to the electromagnetic block (2712) via an edge extension plate provided on its outer side, and the electromagnetic block (2712) is connected to the bottom of the limiting frame (2711) via magnetic force.

6. A watch case forming method according to claim 4, characterized in that: A guide frame (277) is fixedly connected inside the U-shaped frame (24), and the guide frame (277) is provided with two and symmetrically distributed along the center of the U-shaped frame (24). An L-shaped plate (278) is slidably connected inside the guide frame (277), and the bottom of the L-shaped plate (278) is connected to a telescopic mechanism arranged inside the U-shaped frame (24). An abutment rod (279) abutting against a horizontal plate of the L-shaped plate (278) is fixedly connected to the surface of the connecting frame (271).

7. A watch case forming method according to claim 6, characterized in that: A movable hole (2781) is provided on the surface of the vertical plate of the L-shaped plate (278), and guide grooves (2782) are provided on both side walls of the movable hole (2781), and the guide grooves (2782) are of Z-shaped design. The guide grooves (2782) are fixedly connected to a rack (2783) meshing with the gear (276) through a movable block arranged inside the guide grooves (2782), and a counterweight plate (2784) is fixedly connected to the surface of the rack (2783).

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