A front clamping method for watch case barrel polishing

Abstract

The present application belongs to the technical field of watchcase polishing clamping processing, and specifically discloses a watchcase drum polishing front clamping method, comprising the following steps: step 1, using a clamping assembly to clamp a plurality of watchcases one by one on a plurality of clamps; step 2, moving the clamping assembly to a cover removing device, using the cover removing device to disassemble the clamping assembly and expose all the clamps; step 3, removing a part of the disassembled clamping assembly, removing the other part of the clamping assembly together with the clamps and reversely stringing the clamps on a plurality of hanging rods of a stringing plate, and removing the other part of the clamping assembly; step 4, repeating steps 1 to 3, so that all the hanging rods of the stringing plate are fully strung with the clamps clamping the watchcases; step 5, removing the two hanging rods fully strung with the clamps and installing them between two positioning plates; step 6, using a pressing device to press the clamps between the two positioning plates to form a hanging clamp. The present application can simplify the watchcase clamping processing production process and improve the clamping production efficiency.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of watch case polishing clamping processing, and particularly relates to a watch case drum polishing pre-clamping method. BACKGROUND

[0002] In the metal processing and surface treatment industry, drum polishing technology is widely adopted as a key process to significantly improve the smoothness of the workpiece surface and effectively eliminate surface defects. Especially for small and precise parts such as watch cases, watch case polishing is an indispensable key step. Since watch case polishing usually only requires polishing the outer wall, the inner wall does not need to be polished, therefore, before polishing, a single watch case needs to be clamped on a single clamp to cover the inner wall of the watch case, so that the outer wall of the watch case can be efficiently and accurately polished. This step ensures that the inner wall of the watch case is not damaged during polishing, and ensures the uniformity and consistency of the polishing effect. In order to batch polish watch cases, multiple clamps will be hung on a hanging rod before polishing, and the two ends will be fastened with screws to achieve connection.

[0003] The existing drum polishing clamping process generally first uses a simple jig to clamp a single watch case on a clamp, then hangs the clamps with watch cases on the hanging rod one by one, and finally fixes the two ends of the hanging rod with screws. A string of clamps with watch cases can be put into the drum polishing machine for batch polishing. The whole clamping process is complicated, time-consuming and labor-intensive, and greatly reduces the clamping production efficiency.

[0004] Therefore, the inventor designs a clamping processing production line to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a watch case drum polishing pre-clamping method, which can simplify the watch case clamping processing production process and improve the clamping production efficiency.

[0006] In order to achieve the above purpose, a technical scheme adopted by the present application is as follows:

[0007] A watch case drum polishing pre-clamping method, comprising the following steps:

[0008] Step 1, using a clamping assembly to clamp a plurality of watch cases one by one on a plurality of clamps;

[0009] Step 2, moving the clamping assembly holding a plurality of watch cases to a cover removal device, and using the cover removal device to remove a part of the clamping assembly and expose all the clamps;

[0010] Step 3, removing the part of the clamping assembly that is removed, and removing another part of the clamping assembly and the clamps with a plurality of watch cases together and reversing the stringing on the hanging rods of the stringing plate, and removing the other part of the clamping assembly;

[0011] Step 4, repeat steps 1 to 3 to make all the hanging rods of the stringing plate string full of the clamps clamped with the watch cases;

[0012] Step 5, remove the two hanging rods with full clamps and install them between the two positioning plates;

[0013] Step 6, use the pressing device to press the clamps between the two positioning plates to form the hanger.

[0014] As an improvement of the watch case drum polishing pre-clamping method, the clamping assembly comprises a cover plate, a limiting plate and a base, the cover plate and the limiting plate are sequentially stacked from top to bottom on the base, the top of the base is clamped with a plurality of clamping seats, the bottom of the cover plate is clamped with a plurality of clamping covers, all the clamping covers are coaxially magnetically connected with all the clamping seats one by one and correspondingly form the clamps, and the limiting plate is sleeved outside all the clamps to correspondingly form a plurality of cavities.

[0015] As an improvement of the watch case drum polishing pre-clamping method, the bottom of the clamping cover is provided with a limiting table, the top of the clamping seat is provided with a limiting groove, the limiting table and the limiting groove are matched, and the bottom of the limiting table is magnetically connected with a plurality of lower magnets in the limiting groove through a plurality of upper magnets.

[0016] As an improvement of the watch case drum polishing pre-clamping method, the cover plate and the limiting plate are opened by the cover opening device, the cover opening device comprises a machine body and a sliding seat for limiting bearing the clamping assembly, the sliding seat is slidingly connected with the machine body, the upper portion of the sliding seat is provided with a pressing plate with lifting function, and the bottom of the pressing plate is provided with a plurality of pressing columns for simultaneously pushing all the clamps and the base downward.

[0017] As an improvement of the watch case drum polishing pre-clamping method, a plurality of supporting columns are vertically arranged on the sliding seat, all the supporting columns pass through the base and jointly support the limiting plate, and all the pressing columns movably pass through the limiting plate and the cover plate and movably abut against all the clamps one by one.

[0018] As an improvement of the watch case drum polishing pre-clamping method, two positioning plates are respectively sleeved on the upper and lower ends of all the hanging rods of the hanger, each positioning plate is limitedly connected with a clamping plate, the two ends of the hanging rod of the hanger are movably clamped with the clamping plate one by one, and an elastic sleeve is sleeved on each hanging rod of the hanger to provide elastic support for all the clamps stringed on the hanging rod.

[0019] As an improvement of the watch case drum polishing pre-clamping method, at least one pair of limiting screws are fixed on the positioning plate, at least one pair of limiting side grooves are arranged on the clamping plate, the same pair of limiting side grooves are arranged on the two corresponding side surfaces of the clamping plate, and the same pair of limiting screws are arranged in the same pair of limiting side grooves.

[0020] As an improvement of the watch case drum polishing pre-clamping method, the hanging rod two ends of the hanger slide in the clamping holes of the two clamping plates.

[0021] As an improvement of the watch case drum polishing pre-clamping method, the hanging rod two ends of the hanger slide in the clamping holes of the two clamping plates.

[0022] As an improvement of the watch case drum polishing pre-clamping method, the hanging rod two ends of the hanger slide in the clamping holes of the two clamping plates.

[0023] Compared with the prior art, the watch case drum polishing pre-clamping method has the advantages that the clamping assembly is used to clamp a plurality of watch cases on a plurality of clamps one by one, the part of the clamping assembly is disassembled by the cover dismounting device, all the clamps are exposed, then the other part of the clamping assembly and all the clamps carried are removed, all the exposed clamps are connected on the hanging rods one by one, and finally the plurality of hanging rods with the clamps are installed between the two positioning plates by the pressing device and are pressed to form the hanger, so that the drum polishing is facilitated, the production line is simplified, the plurality of watch cases can be clamped quickly and non-destructively at the same time, and the watch case clamping efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the watch case drum polishing pre-clamping method of the application;

[0025] Figure 2 is an enlarged view of A in FIG. 1;

[0026] Figure 3 is Figure 2 is an enlarged view of B in FIG. 1;

[0027] Figure 4 is an enlarged view of B in FIG. 1;

[0028] Figure 5 Figure 4 is an enlarged view of B in FIG. 1;

[0029] Figure 6 is an enlarged sectional view of the clamping assembly of the present invention;

[0030] Figure 7 is an enlarged view of Figure 6 at C in FIG. 7;

[0031] Figure 8 is an enlarged sectional view of the clamp of the present invention;

[0032] Figure 9 is an enlarged perspective view of the cap removal device of the present invention;

[0033] Figure 10 is an enlarged sectional view of the cap removal device of the present invention;

[0034] Figure 11 is an enlarged view of Figure 10 at D in FIG. 8;

[0035] Figure 12 is another enlarged sectional view of the cap removal device of the present invention;

[0036] Figure 13 is an enlarged view of Figure 12 at E in FIG. 9;

[0037] Figure 14 is an enlarged perspective view of the pressing device of the present invention;

[0038] Figure 15 is an enlarged sectional view of the pressing device of the present invention;

[0039] Figure 16 is an enlarged view of Figure 15 at F in FIG. 10;

[0040] Figure 17 is an enlarged perspective view of the single hanger of the present invention;

[0041] Figure 18 is another enlarged perspective view of the single hanger of the present invention;

[0042] Figure 19 is an enlarged sectional view of the single hanger of the present invention;

[0043] Figure 20 is an enlarged view of Figure 19 at G in FIG. 11.

[0044] Illustration:

[0045] 1. Clamping assembly; 11. Base; 111. Lower support plate; 112. Base plate; 113. Bottom hole; 114. Lower insertion hole; 12. Limiting plate; 121. Upper plate; 122. Lower plate; 13. Cover plate; 131. Top plate; 132. Upper support plate; 133. Upper insertion hole; 14. Fixture; 141. Clamp cover; 1411. Clamp body; 1412. Upper positioning block; 1413. Upper clamping platform; 1414. Limiting platform; 142. Clamping seat; 1421. Lower positioning block; 1422. Clamping block; 1423. Lower locking platform; 1424. Limiting groove; 143. Lower hole; 144. Upper hole; 145. Positioning groove; 146. Lower magnet; 147. Upper magnet; 15. Lower locking slot; 16. Upper locking slot; 2. Cover removal device; 21. Slide; 211. Support column; 212. Guide column; 22. 23. Opening cylinder; 23. Pressure plate; 231. Pressure column; 24. Machine body; 3. Connecting plate; 4. Clamping device; 41. Machine base; 411. Work panel; 412. Rail; 42. Baffle; 421. Clearance groove; 422. Clamping space; 43. Slide plate; 431. Stop bar; 44. Bearing plate; 441. Slot; 45. Clamping cylinder; 451. Clamping plate; 5. Hanger; 51. Lower positioning Plate; 511, Lower limit screw; 52, Upper positioning plate; 521, Upper limit screw; 53, Lower clamping plate; 531, Lower limit side groove; 532, Lower clamping hole; 5321, Lower clamping platform; 54, Upper clamping plate; 541, Upper limit side groove; 542, Upper clamping hole; 5421, Upper clamping platform; 55, Hanging rod; 551, Lower clamping groove; 552, Upper clamping groove; 56, Elastic sleeve; 6, Watch case. Detailed Implementation

[0046] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of protection of the present invention.

[0047] Reference Figures 1 to 20 A method for clamping a watch case before polishing a drum includes the following steps:

[0048] Step 1: Use the clamping assembly 1 to clamp the multiple watch cases 6 one by one onto the multiple clamps 14;

[0049] Step 2: Move the clamping assembly 1 holding multiple watch cases 6 to the cover removal device 2, and use the cover removal device 2 to remove a part of the clamping assembly 1 (i.e., the cover plate 13 and the limiting plate 12 of the clamping assembly 1) and expose all the clamps 14.

[0050] Step 3, remove the disassembled part of the clamping assembly 1 (i.e. the cover plate 13 and the limiting plate 12 of the clamping assembly 1), remove the other part of the clamping assembly 1 (i.e. the base 11 of the clamping assembly 1) and the clamps 14 clamping the plurality of watch cases 6 together and reverse stringing on the plurality of hanging rods 55 of the stringing plate 3, and taking out the other part of the clamping assembly 1 (i.e. the base 11 of the clamping assembly 1);

[0051] Step 4, repeat steps 1 to 3 to make all the hanging rods 55 of the stringing plate 3 string full of clamps 14 clamping the watch cases 6;

[0052] Step 5, remove the two hanging rods 55 full of clamps 14 and install them between the two positioning plates;

[0053] Step 6, use the pressing device 4 to press the clamps 14 between the two positioning plates to form the hanging device 5.

[0054] Referring to Figures 2 to 8 , the clamping assembly 1 includes a base 11, a limiting plate 12 and a cover plate 13, and a plurality of clamps 14, the cover plate 13 and the limiting plate 12 are sequentially stacked on the base 11 from top to bottom, the top of the base 11 is clamped with a plurality of clamping seats 142, the bottom of the cover plate 13 is clamped with a plurality of clamping covers 141, all the clamping covers 141 and all the clamping seats 142 are coaxially magnetically attracted and connected and correspond to form a plurality of clamps 14, and the limiting plate 12 is sleeved on all the clamps 14 to correspond to form a plurality of cavities for accommodating the watch cases 6.

[0055] Referring to Figure 2 , Figure 3 and Figure 4 , the top of the base 11 is provided with a plurality of lower mounting grooves, and a plurality of clamping seats 142 are correspondingly mounted in the plurality of lower mounting grooves. A lower clamping groove 15 is arranged on the inner wall of each lower mounting groove. The base 11 includes a bottom plate 112 and a lower supporting plate 111, the lower supporting plate 111 is stacked on the bottom plate 112 and clamped with the bottom plate 112 to form the lower clamping groove 15 of the base 11, and a plurality of bottom holes 113 and a plurality of lower insertion holes 114 are arranged on the bottom plate 112 and the lower supporting plate 111. A plurality of bottom holes 113 are correspondingly located at the bottom of the plurality of lower mounting grooves.

[0056] Referring to Figure 1 , Figure 4 , Figure 6 and Figure 7The limiting plate 12 is clamped between the cover plate 13 and the base 11, and is used to limit all watch cases 6. The limiting plate 12 comprises a lower plate 122 and an upper plate 121. The upper plate 121 is stacked on the lower plate 122 and is clamped with the lower plate 122. A plurality of limiting holes are provided on the lower plate 122 and the upper plate 121. The inner wall of each limiting hole is arc-shaped. The limiting hole is smaller at the top and larger at the bottom, which can be used to limit the downward movement of the corresponding watch case 6.

[0057] With reference to Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the bottom of the cover plate 13 is provided with a plurality of upper mounting grooves. A plurality of cover clamps 141 are installed one by one in the plurality of upper mounting grooves. An upper clamping groove 16 is provided on the inner wall of each upper mounting groove. The cover plate 13 comprises an upper supporting plate 132 and a top plate 131. The top plate 131 is stacked on the upper supporting plate 132 and is clamped with the upper supporting plate 132 to form the upper clamping groove 16 of the cover plate 13. A plurality of upper insertion holes 133 are provided on the top plate 131 and the upper supporting plate 132. The plurality of upper insertion holes 133 are coaxially arranged one by one in the plurality of upper mounting grooves.

[0058] With reference to Figures 6 to 8 , each clamp 14 comprises a cover clamp 141 and a clamp seat 142. The number of clamp seats 142 is a plurality and is clamped one by one in the plurality of lower mounting grooves of the base 11. Each clamp seat 142 comprises a clamp block 1422 and a lower positioning block 1421. A lower clamping table 1423 is provided on the outer side wall of the clamp block 1422. The clamp block 1422 is installed in the lower mounting groove of the base 11, and the lower clamping table 1423 is clamped with the base 11. The lower positioning block 1421 is fixed on the clamp block 1422 and located between the base 11 and the cover plate 13. The side surface of the lower positioning block 1421 is protruding. A limiting groove 1424 is provided on the top of the lower positioning block 1421. A plurality of lower magnets 146 are provided in the limiting groove 1424. A lower hole 143 is provided at the center of the clamp seat 142 and the lower positioning block 1421. The lower hole 143 is located at the center of the limiting groove 1424. All the bottom holes 113 and all the lower holes 143 are coaxially communicated one by one.

[0059] With reference to Figures 6 to 8The number of the clamping covers 141 is multiple and correspondingly clamped in the multiple upper mounting slots at the bottom of the cover plate 13, each clamping cover 141 comprises a clamping body 1411 and an upper positioning block 1412, the bottom of the upper positioning block 1412 is provided with a limiting table 1414 matched with the limiting slot 1424, the bottom of the limiting table 1414 is provided with multiple upper magnets 147, the multiple upper magnets 147 are correspondingly magnetically adsorbed with the multiple lower magnets 146, so that the upper positioning block 1412 is magnetically adsorbed with the lower positioning block 1421, the side of the upper positioning block 1412 is protruded and cooperated with the protruded position of the side of the lower positioning block 1421 to form a ring-shaped positioning slot 145, each positioning slot 145 is closed by the limiting plate 12 to form a corresponding cavity, the watch case 6 is located in the ring-shaped cavity, the upper positioning block 1412 is also located between the base 11 and the cover plate 13, the clamping body 1411 is fixed on the upper positioning block 1412, the clamping body 1411 is mounted in the upper mounting slot at the bottom of the cover plate 13, the outer side wall of the clamping body 1411 is provided with an upper clamping table 1413 matched with the upper clamping slot 16 of the cover plate 13, the clamping body 1411 and the upper positioning block 1412 are provided with an upper hole 144 along the axial direction, all the upper holes 144 are coaxially communicated with all the upper insertion holes 133 of the cover plate 13 to form a pressing channel, the lower hole 143 is coaxially communicated with the pressing channel (that is, the upper insertion hole 133, the upper hole 144 and the lower hole 143 are coaxially communicated), the diameter of the lower hole 143 is smaller than the diameter of the corresponding pressing channel (the diameter of the lower hole 143 is smaller than the diameter of the upper hole 144 and the diameter of the upper insertion hole 133).

[0060] The clamping assembly 1 of the present application clamps the multiple clamping bases 142 on the base 11, facilitates placing the multiple watch cases 6, then limits the multiple watch cases 6 by the limiting plate 12, and then covers the cover plate 13 clamped with the multiple clamping covers 141, and forms the multiple clamps 14 clamped with the watch cases 6 by the magnetic adsorption connection between the multiple clamping covers 141 and the multiple clamping bases 142, so that the clamping assembly 1 is simple in operation, can simultaneously and quickly clamp the multiple watch cases 6 without damage, and improves the clamping efficiency of the watch cases 6.

[0061] Referring to Figures 9 to 13 The cover opening device 2 is used for opening the cover plate 13 and the limiting plate 12, and comprises a machine body 24, a sliding base 21, a pressing plate 23 and the clamping assembly 1, the sliding base 21 is slidingly arranged on the machine body 24, the clamping assembly 1 is limited and carried on the sliding base 21, the pressing plate 23 with the lifting function is arranged above the sliding base 21, and the bottom of the pressing plate 23 is provided with multiple pressing columns 231 for simultaneously pushing out all the clamps 14 and the base 11 downward.

[0062] Referring to Figures 9 to 13The front and back of the body 24 are hollowed out, two slide rails are arranged on the inner bottom wall of the body 24 at intervals, the sliding seat 21 is slidably arranged on the two slide rails, a plurality of support columns 211 and four guide columns 212 are vertically arranged on the sliding seat 21, the four guide columns 212 are located at two corresponding edges of the sliding seat 21, the four guide columns 212 pass through the base 11, the limiting plate 12 and the cover plate 13, all the support columns 211 correspond to all the lower insertion holes 114 on the base 11 one by one, and after all the support columns 211 pass through the lower insertion holes 114 of the base 11 one by one, the support columns 211 can jointly support the limiting plate 12 and the cover plate 13, the pressing plate 23 is installed on the hollow part at the top of the body 24, two cover opening cylinders 22 are fixed on the top of the body 24 at intervals, the pressing plate 23 is located at the output end of the two cover opening cylinders 22 and is driven by the two cover opening cylinders 22 to move up and down, all the pressing columns 231 are vertically arranged on the bottom of the pressing plate 23, all the pressing columns 231 correspond to all the upper holes 144 of the clamps 141 one by one, and all the pressing columns 231 movably pass through the limiting plate 12 and the cover plate 13 and movably abut against all the clamps 14 one by one.

[0063] The cover opening device 2 of the present application can quickly and non-destructively clamp a plurality of watch cases 6 on the clamping assembly 1 and limit and carry the clamping assembly 1 on the sliding seat 21, and by pressing the pressing plate 23 downward, the plurality of pressing columns 231 are simultaneously moved downward, the clamps 14 clamping the watch cases 6 and the base 11 are simultaneously pushed out downward, the cover opening (i.e., the limiting plate 12 and the cover plate 13 are removed) is facilitated, and the user can easily and quickly take out the clamps 14 clamping the watch cases 6, so that the watch cases 6 or the clamps 14 are prevented from being damaged during the taking-out process.

[0064] With reference to Figure 1 The series connection plate 3 is in the shape of a plate, a plurality of hanging rods 55 can be vertically inserted on the series connection plate 3, after the limiting plate 12 and the cover plate 13 are removed, the base 11 clamping the plurality of clamps 14 can be taken off from the sliding seat 21 and series connected on the plurality of hanging rods 55 on the series connection plate 3, so that the plurality of clamps 14 clamping the watch cases 6 on the base 11 can be series connected on the plurality of hanging rods 55 on the series connection plate 3.

[0065] With reference to Figures 14 to 16 The pressing device 4 is used for installing the plurality of hanging rods 55 series connected with the clamps 14 between two positioning plates and pressing the hanging rods 55 to form the clamp 5 clamped at both ends, the pressing device 4 comprises a base 41, a sliding plate 43, a carrying plate 44 and a pressing plate 451, the sliding plate 43 is slidably arranged on the base 41, the carrying plate 44 is movably supported on the sliding plate 43, the carrying plate 44 is used for supporting the above-mentioned clamp 5, one side of the base 41 is provided with a pressing space 422 for sliding the sliding plate 43 into, and the bottom of the pressing space 422 is provided with the pressing plate 451 for pushing the carrying plate 44 upward.

[0066] With reference to Figures 14 to 16The top of the base 41 is provided with a working panel 411, two rails 412 are spaced apart on the working panel 411, each rail 412 is arranged along the transverse direction of the base 41, the upper right of the base 41 is fixedly connected with a baffle plate 42 through a side plate, the bottom of the baffle plate 42 is provided with a clearance groove 421 for providing clearance for the upper clamping plate 54, the compression plate 451 penetrates the right end of the working panel 411, and the side of the working panel 411 relative to the compression plate 451 (i.e. the right side of the working panel 411), the baffle plate 42 and the side plate jointly form a compression space 422.

[0067] With reference to Figures 14 to 16 The sliding plate 43 is slidingly arranged on the two rails 412 of the working panel 411, the side of the sliding plate 43 away from the compression space 422 is vertically fixed with a stop bar 431 for limiting the positions of the two positioning plates, the number of the stop bars 431 is two and the stop bars 431 are arranged at intervals, the cross section of each stop bar 431 is L-shaped, the two corners of each positioning plate abut against the inner walls of the two stop bars 431 respectively, the top surface and the bottom of the bearing plate 44 are exposed to the sliding plate 43, so that the bearing plate 44 can move upwards, the top surface of the bearing plate 44 is provided with a slot 441 for inserting the lower end of the hanging rod 55, the compression plate 451 is located below the sliding plate 43 and the bearing plate 44, and the right end of the working panel 411 is fixedly connected with a compression cylinder 45, and the compression plate 451 is located on the output shaft of the compression cylinder 45.

[0068] The compression device 4 of the present application supports the hanger 5 with the characteristics of convenient disassembly and flexible adjustment by means of the bearing plate 44 borne by the sliding plate 43, the bearing plate 44 sliding into the compression space 422 is pushed upwards by operating the compression plate 451, the elastic sleeve 56 on the bearing plate 44 is deformed, and then the two positioning plates tightly clamp the clamps 14 serially connected on the hanging rod 55, which not only significantly improves the convenience of operation, but also ensures the rapidity and stability of the compression process.

[0069] With reference to Figures 15 to 20 The hanger 5 comprises a plurality of hanging rods 55, two positioning plates and two clamping plates, the two positioning plates are sleeved on the upper and lower ends of all the hanging rods 55 respectively, the two clamping plates are in one-to-one positionally connected with the two positioning plates, the two ends of the hanging rod 55 are in one-to-one correspondingly movably connected with the clamping plates, and the elastic sleeve 56 for providing elastic support for all the clamps 14 serially connected on the corresponding hanging rod 55 is sleeved on each hanging rod 55.

[0070] With reference to Figure 15 , Figure 16 , Figure 19 and Figure 20, a fixture 5 of the present invention preferably includes two hanging rods 55 which are arranged in parallel. Clamping grooves are provided at the upper and lower ends of each hanging rod 55. The two clamping grooves are specifically an upper clamping groove 552 and a lower clamping groove 551. Among them, the upper clamping groove 552 is located at the upper end of the hanging rod 55, and the lower clamping groove 551 is located at the lower end of the hanging rod 55. The elastic sleeve 56 is located above the lower clamping groove 551 and close to the lower clamping groove 551.

[0071] Refer to Figure 17 and Figure 18 , the positioning plates at the upper and lower ends of the two hanging rods 55 are specifically an upper positioning plate 52 and a lower positioning plate 51. Among them, the upper positioning plate 52 is sleeved on the upper ends of the two hanging rods 55, and the lower positioning plate 51 is sleeved on the lower ends of the two hanging rods 55. The two clamping plates are specifically an upper clamping plate 54 and a lower clamping plate 53. The upper clamping plate 54 is superimposed on the top of the upper positioning plate 52, and the lower clamping plate 53 is located inside the lower positioning plate 51.

[0072] Refer to Figure 15 , Figure 16 and <00002​​​​​​​​​The upper positioning plate 52 is also in the shape of an "eye", and the bottom of the upper positioning plate 52 is fixed with two pairs of upper limiting screws 521. The upper ends of the two hanging rods 55 pass through the upper positioning plate 52 and extend out of the upper positioning plate 52. The upper clamping plate 54 is located on the top of the upper positioning plate 52. One end of the upper clamping plate 54 is provided with a handle, and the other end of the upper clamping plate 54 is provided with two pairs of upper limiting side grooves 541. The same pair of upper limiting side grooves 541 is located on the two corresponding side surfaces of the upper clamping plate 54. The same pair of upper limiting screws 521 is correspondingly arranged in the same pair of upper limiting side grooves 541. The upper clamping plate 54 is provided with two upper clamping holes 542 for the upper ends of the two hanging rods 55 to slide laterally one by one. Each upper clamping hole 542 is in the shape of a long strip. The upper ends of the two hanging rods 55 are respectively located in the two upper clamping holes 542. Two upper clamping tables 5421 are respectively arranged on the two corresponding inner walls of each upper clamping hole 542. The upper clamping groove 552 on the upper end of each hanging rod 55 is movably clamped with the two upper clamping tables 5421 in the corresponding upper clamping hole 542.

[0074] The hanger 5 of the present application is connected to the positioning plates at the two ends of the hanging rod 55 through the two clamping plates, and the two ends of the hanging rod 55 can be movably clamped with the two clamping plates. The user only needs to simply push and pull the two clamping plates to easily control the clamping state of the two ends of the hanging rod 55 with the two clamping plates, thereby greatly simplifying the disassembly and assembly process of the hanging rod 55. At the same time, the elastic sleeve 56 is introduced to provide necessary elastic support for all the clamps 14 on the hanging rod 55. During the polishing process, as the pressure on the workpiece (i.e., the watch case 6) clamped by the clamp 14 changes, the elastic sleeve 56 can be flexibly adjusted accordingly to ensure the stability and consistency of the polishing operation, thereby improving the polishing quality.

[0075] With reference to Figures 1 to 20 The specific clamping method of the watch case drum before polishing is as follows:

[0076] The plurality of clamping seats 142 are correspondingly clamped on the plurality of lower mounting grooves on the top of the base 11.

[0077] The plurality of watch cases 6 are correspondingly sleeved on the lower positioning blocks 1421 of the plurality of clamping seats 142.

[0078] Cover the limiting plate 12. At this time, all the watch cases 6 can be located between the limiting plate 12 and the base 11.

[0079] First, the plurality of clamping covers 141 are correspondingly clamped on the plurality of upper mounting grooves on the bottom of the cover plate 13. Then, the cover plate 13 with the plurality of clamping covers 141 is covered on the limiting plate 12. The lower magnets 146 on the plurality of clamping seats 142 and the upper magnets 147 on the plurality of cover plates 13 are correspondingly magnetically attracted to form the plurality of clamps 14. At this time, the base 11, the limiting plate 12, and the cover plate 13 are stacked together due to the magnetic attraction of the clamps 14 to form the clamping assembly 1.

[0080] The clamping assembly 1 clamping a plurality of watch cases 6 is placed on the slide 21, and the plurality of supporting columns 211 are inserted into the plurality of lower insertion holes 114 of the base 11 one by one and abut against the bottom of the limiting plate 12;

[0081] The slide 21 is pushed so that the slide 21 carrying the clamping assembly 1 slides to the position directly below the pressing plate 23;

[0082] The two cover opening cylinders 22 drive the pressing plate 23 to move downward, and the plurality of pressing columns 231 at the bottom of the pressing plate 23 pass through the plurality of upper insertion holes 133 on the cover plate 13 one by one and are inserted into the upper holes 144 of the plurality of clamping covers 141 one by one. Since the diameter of the lower hole 143 of the clamping seat 142 is smaller than the diameter of the upper hole 144 of the clamping cover 141, the plurality of pressing columns 231 abut against the clamping seat 142 downward, the clamping cover 141 is disengaged from the cover plate 13, and all the clamping assemblies 1 and the base 11 clamping the watch cases 6 move downward together. Since the limiting plate 12 and the cover plate 13 are still supported on all the supporting columns 211, the cover plate 13 and the limiting plate 12 can be easily removed from the slide 21 by manual operation, and the base 11 and all the clamping assemblies 14 clamping the watch cases 6 are left on the slide 21;

[0083] The plurality of bases 11 clamping the clamping assemblies 14 are removed from the slide 21 and reversely strung on the plurality of hanging rods 55 on the stringing plate 3, so that the plurality of clamping assemblies 14 on the plurality of bases 11 are strung on the plurality of hanging rods 55 on the stringing plate 3 one by one, and the plurality of bases 11 are removed from the stringing plate 3;

[0084] The above steps are continuously cycled until the plurality of hanging rods 55 on the stringing plate 3 are strung with the clamping assemblies 14;

[0085] Two hanging rods 55 strung with the clamping assemblies 14 are removed from the stringing plate 3 and are vertically inserted into the lower positioning plate 51, and the lower ends of the two hanging rods 55 pass through the lower clamping holes 532 of the lower clamping plate 53 and extend out of the lower clamping plate 53 in sequence;

[0086] The lower clamping plate 53 is manually pushed inward along the length direction of the lower positioning plate 51, so that the lower clamping groove 551 at the lower end of each hanging rod 55 is clamped with the two lower clamping grooves 5321 of the corresponding lower clamping hole 532 of the lower clamping plate 53, so that the lower ends of the two hanging rods 55 are connected with the lower positioning plate 51, and the lower end of the hanging assembly 5 is in a clamped state;

[0087] The upper positioning plate 52 clamping the upper clamping plate 54 is installed on the upper ends of the two hanging rods 55, so that the upper ends of the two hanging rods 55 pass through the two upper clamping holes 542 of the upper clamping plate 54 and extend out of the upper clamping plate 54 in sequence, and the position of the upper positioning plate 52 is adjusted so that the upper end of the hanging assembly 5 is in a released state;

[0088] The hanger 5 with the upper end in the loosened state is placed on the bearing plate 44, and the two hanger rods 55 outside the lower clamping plate 53 are inserted into the two insertion slots 441 of the bearing plate 44, at this time, the two blocking strips 431 jointly position the upper positioning plate 52 and the lower positioning plate 51 (the two blocking strips 431 are matched with the two corners of each positioning plate, respectively);

[0089] The sliding plate 43 is pushed to the right, and the bearing plate 44, the hanger 5, and the clamps 14 connected in series are moved to the right together until the bearing plate 44 and the sliding plate 43 are moved to the pressing space 422 and are located directly above the pressing plate 451, the pressing cylinder 45 drives the pressing plate 451 to move upward, the pressing plate 451 lifts the bearing plate 44 and the hanger 5 supported thereby, and the upper positioning plate 52 is pressed against the blocking plate 42, at this time, since the lower end of the hanger 5 is clamped and the upper end of the hanger 5 is in the loosened state, the clamps 14 connected in series by the two hanger rods 55 will compress the elastic sleeve 56 until the distance between the two positioning plates reaches the preset value, and the pressing plate 451 stops moving upward, and the two positioning plates clamp the clamps 14 connected in series by the two hanger rods 55;

[0090] The upper clamping plate 54 is pushed inward along the length direction of the upper positioning plate 52, and the upper clamping groove 552 at the upper end of each hanger rod 55 is clamped with the two upper clamping tables 5421 of the corresponding upper clamping hole 542 of the upper clamping plate 54, so that the upper end of the two hanger rods 55 is connected with the upper positioning plate 52, at this time, the upper end of the two hanger rods 55 is also in the clamped state;

[0091] The pressing plate 451 is reset and retracted, the bearing plate 44 is supported on the sliding plate 43 again, the sliding plate 43 is pushed to the left, and the bearing plate 44, the hanger 5, and all the clamps 14 connected in series, and the watch case 6 clamped on the clamps 14 are moved to the leftmost end of the base 41 together with the sliding plate 43, so that the hanger 5 with the two ends clamped can be taken off and placed in the barrel polisher for polishing.

[0092] After polishing, when the two hanger rods 55 of the hanger 5, the clamps 14 connected in series, and the watch case 6 need to be removed, the upper clamping plate 54 is manually pulled outward along the length direction of the upper positioning plate 52, so that the upper end of the two hanger rods 55 is disengaged from the clamping of the upper clamping plate 54, the upper positioning plate 52 connected with the upper clamping plate 54 is removed, and then the lower clamping plate 53 is manually pulled outward along the length direction of the lower positioning plate 51, so that the lower end of the two hanger rods 55 is disengaged from the clamping of the lower clamping plate 53, and the lower positioning plate 51 connected with the lower clamping plate 53 is removed.

[0093] The watchcase drum polishing front clamping method of the present application utilizes the clamping assembly 1 to clamp multiple watchcases 6 one by one on multiple clamps 14, then a part of the clamping assembly 1 is disassembled by the cover dismounting device 2 to expose all the clamps 14, then another part of the clamping assembly 1 and all the clamps 14 carried thereon are removed, all the exposed clamps 14 are connected one by one on multiple hanging rods 55, finally the multiple hanging rods 55 with the clamps 14 connected thereon are installed between two positioning plates and pressed tightly by the pressing device 4 to form a hanging clamp 5, facilitating drum polishing, the whole production line simplifies the clamping processing production flow of the watchcases 6, multiple watchcases 6 can be clamped quickly and non-destructively at the same time, and the clamping efficiency of the watchcases 6 is improved.

[0094] The above only discloses preferred embodiments of the present application, which cannot be used to limit the protection scope of the present application, thus equivalent changes made within the patent application scope of the present application still fall within the scope of the present application.

Claims

1. A method of pre-clamping a watch case barrel for polishing, characterized in that, It comprises the following steps: Step 1, using the clamping assembly to clamp a plurality of watch cases one by one on a plurality of clamps; Step 2, move the clamping assembly holding a plurality of watch cases to the cover removing device, use the cover removing device to remove a part of the clamping assembly and expose all the clamps; Step 3, remove the part of the clamping assembly that has been removed, remove another part of the clamping assembly and the clamps holding a plurality of watch cases together and reverse string on the hanging rods of the stringing plate, remove the other part of the clamping assembly; Step 4, repeat steps 1 to 3, so that all the hanging rods of the stringing plate are strung with clamps holding watch cases; Step 5, remove two hanging rods strung with clamps and install them between two positioning plates; Step 6, use the pressing device to press the clamps between the two positioning plates to form a hanging device; The clamping assembly comprises a cover plate, a limiting plate and a base, the cover plate and the limiting plate are sequentially stacked on the base from top to bottom, the top of the base is clamped with a plurality of clamping seats, the bottom of the cover plate is clamped with a plurality of clamping covers, all the clamping covers and all the clamping seats are coaxially magnetically connected one by one and correspondingly form the clamps, the limiting plate is sleeved outside all the clamps to correspondingly form a plurality of cavities; The cover removing device is used to remove the cover plate and the limiting plate, the cover removing device comprises a machine body and a sliding seat for limiting and bearing the clamping assembly, the sliding seat is slidingly connected with the machine body, the upper part of the sliding seat is provided with a pressing plate with lifting function, the bottom of the pressing plate is provided with a plurality of pressing columns for pushing all the clamps and the base out downward together.

2. The pre-mounting method of a watch case barrel according to claim 1, characterized in that, The bottom of the clamping cover is provided with a limiting table, the top of the clamping seat is provided with a limiting groove, the limiting table and the limiting groove are matched, the bottom of the limiting table is magnetically connected with a plurality of lower magnets in the limiting groove through a plurality of upper magnets.

3. The pre-clamping method for watch case barrel polishing according to claim 1, characterized in that, A plurality of support columns are vertically arranged on the sliding seat, all the support columns pass through the base and jointly support the limiting plate, all the pressing columns movably pass through the limiting plate and the cover plate and movably abut against all the clamps one by one.

4. The pre-mounting method of a watch case barrel according to claim 1, characterized in that, Two limiting screws are fixed on each positioning plate, at least one limiting side groove is arranged on the clamping plate, the same pair of limiting side grooves are located on the two corresponding sides of the clamping plate, and the same pair of limiting screws are arranged one by one in the same pair of limiting side grooves.

5. The pre-mounting method of claim 4, wherein, Two clamping plates are provided with clamping holes for lateral sliding of the two ends of the hanging rod of the hanging device, and the two ends of the hanging rod of the hanging device are respectively located in the clamping holes of the two clamping plates.

6. The pre-mounting method of a watch case barrel according to claim 4, characterized in that, Two clamping plates are provided with clamping holes for lateral sliding of the two ends of the hanging rod of the hanging device, and the two ends of the hanging rod of the hanging device are respectively located in the clamping holes of the two clamping plates.

7. The pre-mounting method of a watch case barrel according to claim 6, characterized in that, The two corresponding inner walls of each clamping hole are respectively provided with clamping tables, and the two ends of the hanging rod of the hanging device are respectively provided with clamping grooves, and the clamping grooves are movably clamped with the clamping tables.

8. The pre-encastment method of claim 1, wherein, The pressing device comprises a base, a sliding plate slidably connected to the base, a bearing plate movably supported on the sliding plate and used for bearing the hanger, and a pressing space provided on one side of the base and used for sliding the sliding plate, wherein a bottom of the pressing space is provided with a pressing plate used for pushing up the bearing plate.

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