Tension detection device for stainless steel watchband

Abstract

The invention relates to the technical field of tension detection, and discloses a tension detection device for a stainless steel watchband, which comprises a test seat and a support fixedly mounted on the top surface of the test seat, a top plate is fixedly mounted at the top end of the support, a pull plate is arranged on the inner side of the support, and a driving mechanism corresponding to the pull plate is arranged on the support. Fixed sleeves are fixedly mounted on the top surface of the pulling plate and the bottom surface of the top plate; chucks are fixedly mounted at the opposite end parts of the two fixed sleeves; wherein a clamping assembly for fixing the end part of the stainless steel watchband is arranged on the inner side of the chuck. According to the invention, the fixing mode that the insertion rod is matched with the watchband mounting hole and the clamping plate clamps slightly is adopted, so that local deformation and stress interference caused by clamping the first section of the watchband vigorously by a traditional clamping jaw are avoided, the stress of the watchband during detection is ensured to accord with the actual working condition, the authenticity and reliability of detection data are effectively improved, and the detection error caused by the fixing mode is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of tension detection, and in particular to a tension detection device for a stainless steel watchband. Background Art

[0002] Stainless steel watch straps are mainly made of stainless steel, which is an alloy steel that contains a certain proportion of chromium and other elements to improve its corrosion resistance and strength. Common stainless steel materials include 304 stainless steel, 316L stainless steel, etc. Among them, 316L stainless steel has better corrosion resistance due to the molybdenum element and is often used in high-end watches.

[0003] After searching, the Chinese patent with publication number CN222506012U discloses a watch strap stretching detection device, comprising a support frame, a rotating rod rotatably mounted on the side wall of one end of the support frame, and a first driving assembly for driving the rotating rod to rotate is installed on the outer wall of the support frame; a first clamping frame is provided at the end of the rotating rod located on the inner side of the support frame, and a first elastic clamping assembly is provided on the top of the first clamping frame; a moving rod is slidably provided on the side wall of the other end of the support frame, a second clamping frame is provided at the end of the moving rod located inside the support frame, a second elastic clamping assembly is provided on the second clamping frame, a rack plate is provided at the bottom of the second clamping frame, and a second driving assembly for driving the rack plate to rotate is installed on the inner wall of the support frame; it can effectively and conveniently perform tension detection and torsion detection on the watch strap, thereby facilitating the processing of the watch, but this solution still has the following shortcomings when it is actually used: During the tension test of a watch strap, the device described above uses a clamp to secure the end of the strap. However, for stainless steel straps, the clamp typically needs to tightly grip the first section of the strap. In this case, a large clamping force is generated between the clamp and the first section. On the one hand, this clamping force may cause local deformation of the first section of the stainless steel strap, changing its original structural stress distribution. On the other hand, during the stretching process, friction will occur at the contact point between the clamp and the first section of the strap, which will interfere with the tension applied to the strap. These two factors lead to a deviation between the actual force applied to the first section of the strap and the theoretical test force during tension testing of stainless steel straps, thus affecting the accuracy of the test.

[0004] Therefore, it is necessary to design a tension detection device for a stainless steel watch strap to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a tension detection device for a stainless steel watchband.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A tensile testing device for a stainless steel watchband comprises a test seat and a bracket fixedly mounted on the top surface of the test seat, a top plate fixedly mounted on the top of the bracket, a pull plate provided on the inner side of the bracket, a drive mechanism corresponding to the pull plate provided on the bracket, a fixed sleeve fixedly mounted on the top surface of the pull plate and the bottom surface of the top plate, and a chuck fixedly mounted on the opposite ends of the two fixed sleeves; Among them, the inner side of the chuck is provided with a clamping assembly for fixing the end of the stainless steel watchband, the inner side of the fixed sleeve is provided with a linkage assembly for driving the clamping assembly to operate, and the outer side of the fixed sleeve is provided with a protective assembly for protecting the detection process.

[0007] As a preferred technical solution of the present invention, the driving mechanism includes a driving screw rotatably mounted on one side of the inner wall of the bracket, a guide rod fixedly mounted on the other side of the inner wall of the bracket, one end of the pull plate is threadedly connected to the driving screw and the other end is slidingly connected to the guide rod, and a servo motor fixedly mounted on the top surface of the top plate and fixedly connected to the top end of the driving screw.

[0008] As a preferred technical solution of the present invention, the clamping assembly includes two openings symmetrically opened on the top surface of the chuck, the inner walls of the two openings are slidably mounted with clamps, the opposite sides of the two clamps are fixedly mounted with insertion rods, the top surface of the chuck is provided with a through opening connected to the two openings, the side surfaces of the clamps are fixedly mounted with a cover plate slidably connected to the inner wall of the through opening, and the inner side of the chuck is provided with a transmission structure corresponding to the two clamps.

[0009] As a preferred technical solution of the present invention, the width of the cover plate is the same as the width of the opening, and the insertion rod is made of high-strength metal material.

[0010] As a preferred technical solution of the present invention, the transmission structure includes a shaft rotatably mounted on the inner wall of the chuck, the outer wall of the shaft is fixedly sleeved with a transmission gear, the bottom ends of the two clamps are fixedly mounted with a transmission rack that engages with the transmission gear, the width of the transmission gear is at least greater than the width of the transmission rack, the end of the shaft is sleeved with a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the shaft and the chuck, and a clearance opening is opened on the top surface of the chuck.

[0011] As a preferred technical solution of the present invention, the linkage assembly includes a driving rod slidably mounted on the inner wall of a fixed sleeve, a driving rack engaged with a transmission gear is fixedly mounted on the top of the driving rod, a guide opening corresponding to the bottom end of the driving rod is opened on the outer wall of the fixed sleeve, a guide block is fixedly mounted on the bottom end of the driving rod, and the guide block is slidably connected to the guide opening, a positioning rod is fixedly mounted on the side of the guide block, and a limiting mechanism corresponding to the positioning rod is provided on the outer wall of the fixed sleeve.

[0012] As a preferred technical solution of the present invention, the limiting mechanism includes a fixing ring fixedly mounted on the outer wall of the fixing sleeve at a position below the guide port, an elastic sheet is fixedly mounted on the top surface of the fixing ring, and a positioning ring adapted to the positioning rod is fixedly mounted on the top end of the elastic sheet.

[0013] As an optimal technical solution of the present invention, the protective assembly includes a support ring fixedly mounted on the outer wall of the fixed sleeve, the outer wall of the fixed sleeve located above the support ring is slidingly mounted with a sliding ring, the outer wall of the support ring is hinged with a plurality of support rods distributed in a ring array, the outer wall of the sliding ring is hinged with a plurality of linkage rods distributed in a ring array, and the bottom end of the linkage rod is hinged to the side of the support rod, a support spring is fixedly installed between the bottom surface of the sliding ring and the top surface of the support ring, a covering ring cloth is provided between the outer wall of the chuck and the side surfaces of the plurality of support rods, and protective cloth is provided between the opposite sides of the plurality of support rods, the outer wall of the fixed sleeve is provided with a guide opening 2 corresponding to the sliding ring, the outer wall of the driving rod is provided with a guide groove, and the inner wall of the sliding ring is fixedly provided with a guide block 2, and the guide block 2 passes through the guide opening 2 and is slidably connected to the inner wall of the guide groove.

[0014] As a preferred technical solution of the present invention, a magnetic piece is movably mounted on one end of the support rod away from the support ring, and the magnetic poles of the two magnetic pieces located at the same position are opposite.

[0015] As a preferred technical solution of the present invention, the covering ring cloth and the protective cloth are both made of transparent materials.

[0016] The present invention has the following beneficial effects: 1. By setting up a clamping plate and a rod, and adopting a fixing method in which the rod cooperates with the strap mounting hole and the clamping plate lightly clamps the strap, the local deformation and stress interference caused by the traditional clamping jaws clamping the first section of the strap are avoided. This ensures that the force applied to the strap during testing conforms to the actual working conditions, effectively improves the authenticity and reliability of the test data, and avoids detection errors caused by the fixing method. 2. By setting up a chuck and a fixing sleeve, and simulating the actual installation of the watch strap, the test conditions are closer to real scenes. Compared with conventional testing methods, it can more accurately reflect the tensile performance of the stainless steel watch strap during actual wear, providing more effective data support for product quality assessment and improving the reference value of the test results. 3. By setting up protective cloth, covering ring cloth and magnetic support rod structure, parts can be effectively collected when the strap breaks to prevent parts from splashing and injuring people or falling into the chuck. At the same time, the opening and closing design of the support rod makes it easy for staff to quickly install and remove the strap, and the transparent protective material also facilitates real-time observation of the detection process, taking into account both safety and ease of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a stainless steel watchband tension detection device proposed by the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a stainless steel watchband tension detection device proposed by the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the pulling plate structure of a tension detection device for a stainless steel watchband proposed by the present invention; Figure 4 This is a schematic diagram of the fixed sleeve structure of a stainless steel watchband tension detection device proposed by the present invention; Figure 5 for Figure 4 A in the middle is an enlarged structural diagram; Figure 6 This is a schematic diagram of the internal structure of the chuck of a stainless steel watchband tension detection device proposed by the present invention; Figure 7 This is a schematic diagram of a partial cross-section of the fixed sleeve and chuck of a stainless steel watchband tension detection device proposed by the present invention; Figure 8 for Figure 7 The enlarged structural diagram at B in the middle; Figure 9 for Figure 7 Enlarged structural diagram at point C in the middle.

[0018] In the figure: 11. test seat; 12. bracket; 13. top plate; 14. pull plate; 21. drive screw; 22. guide rod; 23. servo motor; 31. fixed sleeve; 32. chuck; 33. opening; 34. clamping plate; 35. plug rod; 36. through port; 37. cover plate; 41. shaft; 42. transmission gear; 43. transmission rack; 44. torsion spring; 45. clearance port; 51. drive rod; 52. drive rack; 53. guide port 1; 54. guide block 1; 55. positioning rod; 56. fixing ring; 57. elastic sheet; 58. positioning ring; 61. support ring; 62. sliding ring; 63. support rod; 64. linkage rod; 65. support spring; 66. cover ring cloth; 67. protective cloth; 68. magnetic sheet; 69. guide port 2; 610. guide block 2; 611. guide groove. DETAILED DESCRIPTION

[0019] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Reference Figure 1-3 A tensile testing device for a stainless steel watchband includes a test base 11 and a bracket 12 fixedly mounted on the top surface of the test base 11. A top plate 13 is fixedly mounted on the top of the bracket 12. A pulling plate 14 is provided on the inner side of the bracket 12. A driving mechanism corresponding to the pulling plate 14 is provided on the bracket 12. Fixed sleeves 31 are fixedly mounted on the top surface of the pulling plate 14 and the bottom surface of the top plate 13. Clamps 32 are fixedly mounted on the opposite ends of the two fixed sleeves 31. The drive mechanism includes a drive screw 21 rotatably mounted on one side of the inner wall of the bracket 12, a guide rod 22 fixedly mounted on the other side of the inner wall of the bracket 12, one end of the pull plate 14 is threadedly connected to the drive screw 21 and the other end is slidably connected to the guide rod 22, and a servo motor 23 fixedly mounted on the top surface of the top plate 13 and fixedly connected to the top end of the drive screw 21; The staff can fix the stainless steel watch strap between the pull plate 14 and the chuck 32 on the top plate 13. During testing, the servo motor 23 can be turned on to drive the drive screw 21 to rotate. One end of the pull plate 14 is screwed to the drive screw 21, and the other end is slidably connected to the guide rod 22. Therefore, when the drive screw 21 rotates, the pull plate 14 can be driven to slide along the guide rod 22, so as to apply continuous tension to the stainless steel watch strap between the chuck 32, thereby enabling the tensile strength test of the stainless steel watch strap.

[0021] Reference Figure 3 、 Figure 4 、 Figure 6The inner side of the chuck 32 is provided with a clamping assembly for fixing the end of the stainless steel watchband. The clamping assembly includes two openings 33 symmetrically opened on the top surface of the chuck 32. The inner walls of the two openings 33 are slidably mounted with clamps 34. The opposite sides of the two clamps 34 are fixedly mounted with insertion rods 35. The insertion rods 35 are made of high-strength metal material. The top surface of the chuck 32 is provided with a through-hole 36 communicating with the two openings 33. The side of the clamp 34 is fixedly mounted with a cover plate 37 slidably connected to the inner wall of the through-hole 36. The width of the cover plate 37 is the same as the width of the opening 33. The inner side of the chuck 32 is provided with a transmission structure corresponding to the two clamps 34. The transmission structure includes a shaft 41 rotatably mounted on the inner wall of the chuck 32. A transmission gear 42 is fixedly mounted on the outer wall of the shaft 41. A transmission rack 43 is fixedly mounted on the bottom end of each of the two clamping plates 34 and engages with the transmission gear 42. The width of the transmission gear 42 is at least greater than the width of the transmission rack 43. A torsion spring 44 is mounted on the end of the shaft 41, and the two ends of the torsion spring 44 are respectively fixedly connected to the shaft 41 and the chuck 32. A clearance opening 45 is formed on the top surface of the chuck 32. In the initial state, the torsion spring 44 is in a compressed state. When the transmission gear 42 is released from the limit, the shaft 41 and the transmission gear 42 can rotate under the action of the torsion, and the transmission gear 42 is engaged with the transmission rack 43 to drive the transmission rack 43, the clamp 34, and the insertion rod 35 to slide along the opening 33, so that the insertion rod 35 is inserted into the mounting hole at the end of the strap, and the clamp 34 can clamp the end of the strap, so that the fixation of the strap end can simulate the form of strap use and installation, and the detection is closer to reality. At the same time, the clamp 34 does not need to clamp the strap section strongly, ensuring the accuracy of the detection. During the sliding of the clamp 34 along the opening 33, the cover 37 can slide in the through port 36, so that the cover 37 can cover the opening 33 to prevent parts from falling into the chuck 32 when the strap is broken during the tensile test.

[0022] Reference Figure 6-8 , a linkage assembly for driving the clamping assembly is provided on the inner side of the fixed sleeve 31, and the linkage assembly includes a driving rod 51 slidably mounted on the inner wall of the fixed sleeve 31, and a driving rack 52 engaged with the transmission gear 42 is fixedly mounted on the top of the driving rod 51, and a guide opening 53 corresponding to the bottom end of the driving rod 51 is opened on the outer wall of the fixed sleeve 31, and a guide block 54 is fixedly mounted on the bottom end of the driving rod 51, and the guide block 54 is slidably connected to the guide opening 53, and a positioning rod 55 is fixedly mounted on the side of the guide block 54, and a limiting mechanism corresponding to the positioning rod 55 is provided on the outer wall of the fixed sleeve 31; The limiting mechanism includes a fixing ring 56 fixedly mounted on the outer wall of the fixing sleeve 31 below the guide opening 1 53. An elastic sheet 57 is fixedly mounted on the top surface of the fixing ring 56. A positioning ring 58 adapted to the positioning rod 55 is fixedly mounted on the top of the elastic sheet 57. When fixing the stainless steel watchband, the staff can fix the two ends of the stainless steel watchband separately. When fixing, the end can be placed between the two clamps 34 on the clamp 32, and the mounting hole of the end of the watchband is aligned with the insertion rod 35. Then the staff can toggle the positioning ring 58. Under the action of the elastic sheet 57, the positioning ring 58 can be moved out of the positioning rod 55 when it is toggled, thereby releasing the limit on the positioning rod 55; because the driving rack 52 is engaged with the transmission gear 42, when the positioning rod 55 limits the driving rod 51, the driving rack 52 is also limited, and the transmission gear 42 is fixed; after the continuous pulling force is applied to the stainless steel watchband, the staff can pull the positioning rod 55 downward, and when the positioning rod 55 is reset, it can be fixed by the positioning ring 58, and when the positioning rod 55 is pulled, the two clamps 34 can be driven away from each other, and the insertion rod 35 moves out of the mounting hole of the watchband.

[0023] Reference Figure 3 、 Figure 5 、 Figure 9 The outer side of the fixed sleeve 31 is provided with a protective component for protecting the detection process. The protective component includes a support ring 61 fixedly sleeved on the outer wall of the fixed sleeve 31. The outer wall of the fixed sleeve 31 located above the support ring 61 is slidably sleeved with a sliding ring 62. The outer wall of the support ring 61 is hinged with a number of support rods 63 distributed in a circular array. The outer wall of the sliding ring 62 is hinged with a number of linkage rods 64 distributed in a circular array, and the bottom end of the linkage rod 64 is hinged to the side of the support rod 63. A support spring 65 is fixedly installed between the bottom surface of the sliding ring 62 and the top surface of the support ring 61. The outer wall of the chuck 32 is connected to the several support rods 63. 3 is provided between the sides thereof, and protective cloths 67 are provided between the opposing sides of the plurality of support rods 63. The covering cloths 66 and 67 are both made of transparent material. The outer wall of the fixed sleeve 31 is provided with a second guide opening 69 corresponding to the sliding ring 62, and the outer wall of the driving rod 51 is provided with a guide groove 611. A second guide block 610 is fixedly mounted on the inner wall of the sliding ring 62. The second guide block 610 passes through the second guide opening 69 and is slidably connected to the inner wall of the guide groove 611. A magnetic piece 68 is movably mounted on the end of the support rod 63 away from the support ring 61, and the magnetic poles of the two magnetic pieces 68 located at the same position are opposite. When the driving rod 51 is released from the limit, the driving rod 51 slides upward under the action of the torsion spring 44, and the limit of the guide groove 611 on the guide block 2 610 can be released. Under the action of the support spring 65, the sliding ring 62 can slide upward. Since the support rod 63 is hinged to the support ring 61, the two ends of the linkage rod 64 are hinged to the sliding ring 62 and the support rod 63 respectively. Therefore, when the sliding ring 62 slides upward, the linkage rod 64 can pull the support rod 63, so that the multiple support rods 63 can be rotated in the gathering direction, so that the multiple support rods 63 initially in the open state are gradually gathered together. The open state of the support rod 63 is convenient for the staff to fix the watchband, and when the support rod 63 is gathered, its top end will move upward, so that the two support rods 63 located in the same vertical position on the top plate 13 and the pulling plate 14 can approach each other, and because the relative magnetic poles of the magnetic pieces 68 at the ends of the support rods 63 are opposite, they are attracted to each other. Under the action of magnetic force, the ends of the support rod 63 can be connected, and the watch strap can be wrapped between several protective cloths 67 and two covering ring cloths 66, and the servo motor 23 can be turned on to drive the pulling plate 14. Since the tensile test stroke of the stainless steel watch strap is usually short, and when the pulling plate 14 moves, the two support rods 63 are connected by the magnetic sheet 68, so that the support rod 63 can continue to rotate in the gathering direction. At this time, the sliding ring 62 can continue to slide upward, and the guide block 2 610 can slide along the guide groove 611. The covering ring cloth 66 and the protective cloth 67 are made of transparent material, which is convenient for the staff to observe the internal watch strap; after the continuous tensile test is completed on the stainless steel watch strap, the broken parts of the stainless steel watch strap can fall onto the protective cloth 67 and the covering ring cloth 66, and the sliding ring 62 can slide downward to reset, and the support rod 63 opens, so that the staff can collect the tested watch strap.

[0024] The specific working principle of the present invention is as follows: When in use, the staff can first fix the stainless steel watchband between the pull plate 14 and the clamping head 32 on the top plate 13. When testing, the servo motor 23 can be turned on to drive the driving screw 21 to rotate. One end of the pull plate 14 is screwed to the driving screw 21, and the other end is slidably connected to the guide rod 22. Therefore, when the driving screw 21 rotates, it can drive the pull plate 14 to slide along the guide rod 22, so as to apply continuous tension to the stainless steel watchband between the clamping heads 32, so as to perform tensile testing on the stainless steel watchband; when fixing the stainless steel watchband, the staff can fix the two ends of the stainless steel watchband separately, and when fixing, the end can be placed between the two clamping plates 34 on the clamping head 32, and the mounting hole of the end of the watchband is aligned with the insertion rod 35, and then the staff can toggle the positioning ring 58. Under the action of the elastic sheet 57, the positioning ring 58 can be moved out of the positioning rod 55 when toggling, thereby releasing the limit on the positioning rod 55; Since the driving rack 52 is engaged with the transmission gear 42, when the positioning rod 55 limits the driving rod 51, the driving rack 52 is also limited, thereby fixing the transmission gear 42. When the driving rod 51 is released from the limit, the torsion spring 44 is in a compressed state, and then the shaft 41 and the transmission gear 42 can rotate under the action of the torsion force, and the transmission gear 42 is engaged with the transmission rack 43 to drive the transmission rack 43, the clamping plate 34, and the insertion rod 35 to slide along the opening 33, thereby making the insertion rod 35 Inserted into the mounting hole at the end of the watchband, the clamping plate 34 can clamp the end of the watchband, so that the fixation of the watchband end can simulate the form of watchband installation, and the detection is closer to reality. At the same time, the clamping plate 34 does not need to clamp the watchband section with great force, ensuring the accuracy of the detection. In the process of the clamping plate 34 sliding along the opening 33, the cover plate 37 can slide in the through-hole 36, so that the cover plate 37 can cover the opening 33, preventing parts from falling into the clamping head 32 when the watchband is broken during the tensile test; When the driving rod 51 is released from the limit, the driving rod 51 slides upward under the action of the torsion spring 44, and the limit of the guide groove 611 on the guide block 2 610 can also be released. Under the action of the support spring 65, the sliding ring 62 can slide upward. Since the support rod 63 is hinged to the support ring 61, the two ends of the linkage rod 64 are hinged to the sliding ring 62 and the support rod 63 respectively. Therefore, when the sliding ring 62 slides upward, the linkage rod 64 can pull the support rod 63, so that the several support rods 63 can be rotated in the direction of gathering, so that the several support rods 63 initially in the open state are gradually gathered together. The open state of the support rod 63 is convenient for the staff to fix the watch strap, and when the support rod 63 is gathered, its top will move upward, so that the top plate 13 and the pull plate 14 are in the same position. The two support rods 63 in a vertical position can be close to each other, and because the magnetic poles of the magnetic pieces 68 at the ends of the support rods 63 are opposite, the ends of the support rods 63 can be connected under the action of the mutually attractive magnetic force. The watch strap is wrapped between a plurality of protective cloths 67 and two cover ring cloths 66, and the servo motor 23 can be turned on to drive the pull plate 14. Since the tensile test stroke of the stainless steel watch strap is usually short, and when the pull plate 14 moves, the two support rods 63 are connected by the magnetic piece 68, so that the support rods 63 can continue to rotate in the convergence direction. At this time, the sliding ring 62 can continue to slide upward, and the second guide block 610 can slide along the guide groove 611. The cover ring cloth 66 and the protective cloth 67 are made of transparent material, which is convenient for staff to observe the inner watch strap. After the continuous tensile test on the stainless steel watchband is completed, the broken parts of the stainless steel watchband can fall onto the protective cloth 67 and the covering ring cloth 66. Then the staff can pull the positioning rod 55 downward. When the positioning rod 55 is reset, it can be fixed by the positioning ring 58. When the positioning rod 55 is pulled, the two splints 34 can be driven away from each other, and the insertion rod 35 moves out of the mounting hole of the watchband. At the same time, the sliding ring 62 can slide downward to reset, and the support rod 63 opens, so that the staff can collect the tested watchband.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tensile testing device for a stainless steel watchband, comprising a test seat (11) and a bracket (12) fixedly mounted on the top surface of the test seat (11), a top plate (13) fixedly mounted on the top of the bracket (12), a pulling plate (14) provided on the inner side of the bracket (12), and a driving mechanism corresponding to the pulling plate (14) provided on the bracket (12), characterized in that: The top surface of the pull plate (14) and the bottom surface of the top plate (13) are both fixedly mounted with fixed sleeves (31), and the opposite ends of the two fixed sleeves (31) are both fixedly mounted with chucks (32); The inner side of the clamp (32) is provided with a clamping assembly for fixing the end of the stainless steel watchband, the inner side of the fixed sleeve (31) is provided with a linkage assembly for driving the clamping assembly to operate, and the outer side of the fixed sleeve (31) is provided with a protective assembly for protecting the detection process.

2. The tension detection device for a stainless steel watchband according to claim 1, characterized in that: The driving mechanism includes a driving screw (21) rotatably mounted on one side of the inner wall of the bracket (12), a guide rod (22) fixedly mounted on the other side of the inner wall of the bracket (12), one end of the pull plate (14) is screwed to the driving screw (21) and the other end is slidably connected to the guide rod (22), and a servo motor (23) fixedly mounted on the top surface of the top plate (13) and fixedly connected to the top end of the driving screw (21).

3. The tension detection device for a stainless steel watchband according to claim 1, characterized in that: The clamping assembly includes two openings (33) symmetrically provided on the top surface of the chuck (32), the inner walls of the two openings (33) are slidably mounted with clamps (34), and the opposite sides of the two clamps (34) are fixedly mounted with insert rods (35), the top surface of the chuck (32) is provided with a through-port (36) communicating with the two openings (33), and the side surfaces of the clamps (34) are fixedly mounted with a cover plate (37) slidably connected to the inner walls of the through-port (36), and the inner side of the chuck (32) is provided with a transmission structure corresponding to the two clamps (34).

4. The tension detection device for a stainless steel watchband according to claim 3, characterized in that: The width of the cover plate (37) is the same as the width of the opening (33), and the insertion rod (35) is made of a high-strength metal material.

5. The tension detection device for a stainless steel watchband according to claim 3, characterized in that: The transmission structure includes a shaft (41) rotatably mounted on the inner wall of the chuck (32), the outer wall of the shaft (41) is fixedly sleeved with a transmission gear (42), the bottom ends of the two clamps (34) are fixedly mounted with a transmission rack (43) meshing with the transmission gear (42), the width of the transmission gear (42) is at least greater than the width of the transmission rack (43), the end of the shaft (41) is sleeved with a torsion spring (44), and the two ends of the torsion spring (44) are respectively fixedly connected to the shaft (41) and the chuck (32), and the top surface of the chuck (32) is provided with a clearance opening (45).

6. The tension detection device for a stainless steel watchband according to claim 5, characterized in that: The linkage assembly includes a driving rod (51) slidably mounted on the inner wall of a fixed sleeve (31), a driving rack (52) meshing with a transmission gear (42) is fixedly mounted on the top of the driving rod (51), a guide opening (53) corresponding to the bottom end of the driving rod (51) is opened on the outer wall of the fixed sleeve (31), a guide block (54) is fixedly mounted on the bottom end of the driving rod (51), and the guide block (54) is slidably connected to the guide opening (53), a positioning rod (55) is fixedly mounted on the side of the guide block (54), and a limiting mechanism corresponding to the positioning rod (55) is provided on the outer wall of the fixed sleeve (31).

7. The tension detection device for a stainless steel watchband according to claim 6, characterized in that: The limiting mechanism comprises a fixing ring (56) fixedly mounted on the outer wall of the fixing sleeve (31) at a position below the guide opening (53), an elastic sheet (57) fixedly mounted on the top surface of the fixing ring (56), and a positioning ring (58) adapted to the positioning rod (55) fixedly mounted on the top end of the elastic sheet (57).

8. The tension detection device for a stainless steel watchband according to claim 6, characterized in that: The protective component comprises a support ring (61) fixedly sleeved on the outer wall of the fixed sleeve (31); the outer wall of the fixed sleeve (31) located above the support ring (61) is slidably sleeved with a sliding ring (62); the outer wall of the support ring (61) is hinged with a plurality of support rods (63) distributed in a ring array; the outer wall of the sliding ring (62) is hinged with a plurality of linkage rods (64) distributed in a ring array, and the bottom end of the linkage rod (64) is hinged with the side of the support rod (63); a support spring ( 65), a covering ring cloth (66) is provided between the outer wall of the chuck (32) and the side surfaces of the plurality of support rods (63), and a protective cloth (67) is provided between the opposite side surfaces of the plurality of support rods (63), the outer wall of the fixed sleeve (31) is provided with a second guide opening (69) corresponding to the sliding ring (62), the outer wall of the driving rod (51) is provided with a guide groove (611), and the inner wall of the sliding ring (62) is fixedly mounted with a second guide block (610), and the second guide block (610) passes through the second guide opening (69) and is slidably connected to the inner wall of the guide groove (611).

9. The tension detection device for a stainless steel watchband according to claim 8, characterized in that: A magnetic piece (68) is movably mounted on one end of the support rod (63) away from the support ring (61), and the relative magnetic poles of the two magnetic pieces (68) located at the same position are opposite.

10. The tension detection device for a stainless steel watchband according to claim 8, characterized in that: The covering ring cloth (66) and the protective cloth (67) are both made of transparent materials.

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