A fully automatic assembly equipment for watch strap buckles

Abstract

The present invention relates to the technical field of watch strap buckle assembly, and in particular to a fully automatic assembly device for watch strap buckles. It realizes the automatic assembly of the ear and the watch strap through mechanical equipment, while ensuring that the ear enters the shaft groove more smoothly, improving the fit between the ear and the shaft groove, reducing the friction resistance between the two, reducing the accident rate of the ear bending or shaft groove damage, and effectively improving the product yield. It includes: a frame, a linear feeder installed on the frame and tilted downward, a clamping mechanism, an elastic pushing mechanism and a positioning fixture for limiting the placement of the watch strap. The clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder and fixedly connected. The clamping mechanism includes a lifting cylinder and a thumb clamp installed on the lifting cylinder; the elastic pushing mechanism includes a first feed cylinder and a self-adjusting elastic pushing assembly installed on the first feed cylinder. The self-adjusting elastic pushing assembly includes a mounting seat, a tension spring and a push rod rotatably installed on the mounting seat.

Description

Technical Field

[0001] The present invention relates to the technical field of watchband buckle nail assembly, and in particular to a fully automatic watchband buckle nail assembly device. Background Art

[0002] The spring lug (also known as the buckle nail) is an important part of a watch. Its main function is to connect the case lugs on the dial and the watch strap. Ninety percent of watches are fixed by the spring lugs. The spring lug includes a nail barrel, a nail shaft slidably installed in the nail barrel, and a push handle fixedly connected to the nail shaft. The nail barrel and the nail shaft are elastically connected by an elastic connecting piece, and the push handle is located on the side close to the end of the nail barrel. The watch strap (the watch strap is made of flexible materials such as leather) is provided with an axis groove and an input hole connected to the axis groove and used to accommodate the push handle. During installation, one end of the nail barrel is inserted into the axis groove through the input hole, and the push handle is pushed. The push rod retracts into the axis groove, and the push handle is continuously pushed until the other end of the nail barrel is completely entered into the axis groove. The two ends of the spring lug extend into the mounting holes of the case lugs on the dial. Please refer to the assembly of the spring lug, watch strap and dial for details. Figure 12 ; Complete the assembly of spring ears, strap and dial.

[0003] At present, the assembly between the lugs, straps and dials is mostly done manually. In order to improve assembly efficiency, some companies also use related assembly equipment for assembly.

[0004] For example, Chinese utility model patent CN212946363U discloses a fully automatic assembly machine for handles and ears of smart wearable devices, including a vibration plate, a material rail, a material picking slide, a slide rail, a slider, a fixing frame, a feeding cylinder, a pushing cylinder, a lifting cylinder, a deflection cylinder, a deflection shaft, a crank-connecting rod mechanism, a first fixed plate, a second fixed plate, a clamping cylinder, a flattening rod, a flattening cylinder, a flattening cylinder support frame, multiple strap positioning jigs and a chain transmission mechanism. The chain transmission mechanism is used to drive the strap positioning jig to move in a cycle. When the material picking slide is at the rear end, the clamping claw of the clamping cylinder is aligned with the discharge port of the material rail to clamp the handle ear. When the material picking slide is at the front end, the handle ear clamped by the clamping claw cylinder is aligned with the feed hole of the strap on the strap positioning jig. The deflection cylinder drives the handle ear to align with the feed hole so that the pushing cylinder pushes the handle ear into the axis hole of the strap. The automatic loading and assembly of the spring ears with handles is realized, which is highly efficient and reduces the labor intensity of the staff.

[0005] However, when the inventors implemented this device, they found the following defects: the spring tab was forcibly pushed into the shaft groove at an angle through the feed hole by the mechanical equipment; the spring tab and the inner wall of the shaft groove were difficult to fit together, and the friction between the two was large, which could cause the spring tab to bend or the spring tab to penetrate the shaft groove, resulting in an increase in the product defect rate. Summary of the Invention

[0006] Based on this, it is necessary to provide a fully automatic assembly equipment for watch strap buckles to address the above technical problems. Through mechanical equipment, the automatic assembly of the spring ears and the watch strap can be realized. At the same time, it can ensure that the spring ears enter the shaft groove more smoothly, improve the fit between the spring ears and the shaft groove, reduce the friction resistance between the two, reduce the accident rate of the spring ears bending or the shaft groove being damaged, and effectively improve the product yield.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A fully automatic assembly device for watch strap buckles is used for assembling watch straps.

[0009] The fully automatic assembly equipment for watch strap buckles specifically includes: a frame, a linear feeder installed on the frame and tilted downward, a clamping mechanism, an elastic pushing mechanism and a positioning jig for limiting the placement of the watch strap, the clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder and fixedly connected, the clamping mechanism includes a lifting cylinder and a thumb clamp installed on the lifting cylinder; the elastic pushing mechanism includes a first feed cylinder and a self-adjusting elastic pushing assembly installed on the first feed cylinder, the self-adjusting elastic pushing assembly includes a mounting seat, a tension spring and a push rod rotatably installed on the mounting seat, the mounting seat is provided with a cavity allowing the push rod to rotate, the bottom of the cavity is provided with an inclined slope wall, the end of the push rod adjacent to the mounting seat is elastically connected to the mounting seat by a tension spring, and the end of the push rod away from the mounting seat is provided with an open slot that fits with the push handle on the raw ear to be installed and a yield slot that fits with the end of the nail shaft on the raw ear to be installed. Furthermore, the linear feeder can adopt a mechanical slide or a pneumatic slide, etc.; a rotating shaft is rotatably installed in the cavity, and the end of the push rod is inserted into the cavity and rotatably connected to the rotating shaft; the two ends of the tension spring are respectively movably connected to the mounting seat and the push rod; the angle between the linear feeder and the horizontal direction is 15°-25°.

[0010] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, it also includes a loading mechanism for loading raw ears, and the loading mechanism includes a first base, a loading die base slidably mounted on the first base, a waiting die base fixedly mounted on the first base, and a second feeding cylinder that provides power for the movement of the loading die base, the top surfaces of the waiting die base and the loading die base are parallel to the linear feeder, and the loading die base and the waiting die base are both provided with a mold cavity that fits a single raw ear, and the loading die base is provided with a through groove communicating with the mold cavity, and the through groove is arranged perpendicular to the mold cavity; further, the through groove can allow the clamping part on the thumb clamp to pass through.

[0011] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, it also includes a feeding mechanism for feeding raw ears to the waiting die seat, the feeding mechanism includes a vibrating plate, a straightening screen and a sliding channel allowing a single raw ear to pass through, the vibrating plate is provided with an inner plate, an outer plate, a spiral guide channel and a single raw ear channel connected to the spiral guide channel, a return port is provided between the inner plate and the outer plate, the spiral guide channel spirals up from the bottom of the inner plate to the upper part of the outer plate, the straightening screen is installed between the inner plate and the outer plate, the straightening screen includes a first arc-shaped guide plate and a second arc-shaped guide plate arranged side by side along the radial direction of the outer plate, the single raw ear channel The discharge end of the channel transitions and extends between the first arc-shaped material guide plate and the second arc-shaped material guide plate, one end of the sliding channel is connected with the discharge point of the first arc-shaped material guide plate, and the other end of the sliding channel is connected with the mold cavity on the waiting die base, the first arc-shaped material guide plate and the second arc-shaped material guide plate are inclined downward away from the center of the outer disk, and a card table with a gradually increasing drop is provided between the first arc-shaped material guide plate and the second arc-shaped material guide plate, a baffle plate and a guide slope block are provided on the second arc-shaped material guide plate, and a baffle plate is provided at the edge of the first arc-shaped material guide plate near the discharge end; further, a V-shaped cavity is formed between the baffle plate and the first arc-shaped material guide plate; the inner diameter of the sliding channel is 1-2mm larger than the outer diameter of the raw ear.

[0012] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, the positioning jig includes a second base, a watch strap mold base rotatably mounted on the second base, and an elastic support component. The watch strap mold base is elastically connected to the second base through the elastic support component, and the watch strap mold base is provided with a watch strap mold groove that fits the watch strap to be assembled; further, the elastic support component is located on the side of the watch strap mold base away from the rotational connection between the watch strap mold base and the second base, and in a natural state, the watch strap mold base is in a horizontal position; the elastic support component can use a spring alone; it can also use a telescopic support rod and a spring, the spring is sleeved on the telescopic support rod, and the two ends of the telescopic support rod are respectively hinged to the second base and the watch strap mold base.

[0013] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, the watch strap mold base is provided with placement grooves that fit with the two shell ears on the dial to be assembled, and the placement grooves are symmetrically arranged on both sides of the watch strap mold groove.

[0014] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, a giveway cavity is provided in the watch strap mold groove at a position corresponding to the shaft groove of the watch strap to be assembled, and an elastic pushing member is installed in the giveway cavity, and the elastic pushing member includes a sliding rod slidably installed on the watch strap mold base, a top spring sleeved on the sliding rod, and a sphere fixedly installed on the end of the sliding rod; further, the outer diameter of the sphere is larger than the inner diameter of the shaft groove on the watch strap to be assembled, and the top spring is a spring, one end of the spring abuts against the inner wall of the giveway cavity, and the other end of the spring abuts against the sphere.

[0015] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, a serration portion is provided on the inner wall of the watch strap mold groove away from the give way cavity; further, the serration portion can be a conical tooth or an arc tooth.

[0016] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, a limited pressure-covering component is installed on the upper part of the watch strap mold base, and the limited pressure-covering component includes a frame and a plurality of pressure-covering rollers rotatably installed on the frame.

[0017] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, the pressing rollers are connected by a chain synchronous transmission, and a servo motor for driving one group of pressing rollers to rotate is installed on the frame.

[0018] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, a limit baffle is provided on the first base, and an in-place sensor is provided on the limit baffle, and the limit baffle is parallel to the top of the loading mold base; further, the in-place sensor can adopt an in-place switch or other equivalent sensors with in-place detection effect.

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

[0020] The fully automatic assembly equipment for watch strap buckles provided by the present invention clamps the raw ear with a thumb clamp, inserts the end of the raw ear close to the push handle into the yielding slot, and the push handle is clamped into the open slot; the watch strap is placed in a horizontal state into the positioning fixture, and under the action of the tension spring, the bottom of the push rod abuts against the inclined slope wall, and the linear feeder drives the clamping mechanism to feed toward the elastic pushing mechanism positioning fixture until the end of the raw ear is inserted into the feed hole on the watch strap in an inclined state, the clamping mechanism is reset and disengaged from the clamping of the raw ear, the first feeding cylinder is started, and the push rod pushes the raw ear into the shaft groove. As the contact area between the end of the raw ear and the inner wall of the shaft groove on the watch strap increases, the push rod and the raw ear adaptively rotate upward around the rotating connection point on the mounting seat, and the clamping between the raw ear and the shaft groove The angle gradually decreases, and the spring ear is gradually pushed into the shaft groove, and the nail shaft on the spring ear is retracted into the nail barrel as the push rod applies force to the push handle on the spring ear. The feed hole is deformed under the action of external force to a degree that allows the other end of the spring ear to enter, and the other end of the spring ear extends into the shaft groove of the watch strap. During the installation process, the spring ear is in elastic contact with the shaft groove on the watch strap and a vibration effect is generated during the movement of the spring ear under the action of changes in the friction force and the elastic tension of the tension spring, so as to improve the smoothness of the insertion of the spring ear into the shaft groove. The automatic assembly of the spring ear and the watch strap is realized through mechanical equipment, while ensuring that the spring ear enters the shaft groove more smoothly, improving the fit between the spring ear and the shaft groove, reducing the friction resistance between the two, reducing the accident rate of the spring ear bending or the shaft groove damage, and effectively improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the present invention in a state without a positioning fixture;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of the positioning fixture provided by the present invention;

[0024] Figure 3 A schematic diagram of the top plan structure provided by the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the cross-section structure at AA in the middle;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of the vibration disk provided by the present invention;

[0027] Figure 6 for Figure 2A schematic diagram of the partially enlarged structure at point B in the middle;

[0028] Figure 7 for Figure 2 A schematic diagram of the partially enlarged structure at point C in the middle;

[0029] Figure 8 for Figure 3 The schematic diagram of the partially enlarged structure at D in the middle;

[0030] Figure 9 for Figure 4 The schematic diagram of the local enlarged structure at E in the middle;

[0031] Figure 10 for Figure 6 The schematic diagram of the partially enlarged structure at F in the middle;

[0032] Figure 11 Schematic diagram of the three-dimensional structure of the push rod;

[0033] Figure 12 This is a schematic diagram of the installation relationship between the dial, strap, and lugs;

[0034] The markings in the figure are as follows: 1. Frame; 2. Linear feeder; 3. Lifting cylinder; 4. Thumb clamp; 5. First feed cylinder; 6. Mounting seat; 7. Tension spring; 8. Push rod; 9. Inclined slope wall; 10. Opening slot; 11. Yield slot; 12. First base; 13. Loading die base; 14. Waiting die base; 15. Second feed cylinder; 16. Mold cavity; 17. Through slot; 18. Vibrating plate; 19. Sliding channel; 20. Inner plate; 21. Outer plate; 22. Spiral guide channel; 23. Single ear channel; 24. Return port; 25. An arc-shaped material guide plate; 26. A second arc-shaped material guide plate; 27. A card table; 28. A material baffle plate; 29. ​​A guide ramp; 30. A baffle plate; 31. A second base; 32. A watch strap mold base; 33. A watch strap mold groove; 34. A placement groove; 35. A slide bar; 36. A top spring; 37. A sphere; 38. A serrated portion; 39. A frame; 40. A pressing roller; 41. A servo motor; 42. A limit baffle plate; 43. An in-position sensor; 44. A spring ear; 45. A dial; 46. A shell ear; 47. A watch strap; 48. A pin shaft; 49. A push handle; 50. An elastic support assembly. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, 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 embodiments described are only 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 making creative efforts should fall within the scope of protection of the present invention.

[0036] As described in the background technology, a fully automatic assembly machine for spring ears on handles of smart wearable devices is used. The spring ears are pushed into the shaft groove in an inclined manner through the feed hole by mechanical equipment. The spring ears are difficult to fit into the inner wall of the shaft groove, and the friction between the two is large, which may cause the spring ears to bend or the spring ears to penetrate the shaft groove, resulting in an increase in the product defect rate.

[0037] In order to solve this technical problem, the present invention provides a fully automatic assembly device for watch strap buckles, which is used for assembling watch straps.

[0038] For details, please refer to Figure 1-10 , a fully automatic assembly equipment for watch strap buckles specifically includes: a frame 1, a linear feeder 2 installed on the frame 1 and tilted downward, a clamping mechanism, an elastic pushing mechanism and a positioning fixture for limiting the placement of a watch strap 47, the clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder 2 and fixedly connected, the clamping mechanism includes a lifting cylinder 3 and a thumb clamp 4 installed on the lifting cylinder 3; the elastic pushing mechanism includes a first feed cylinder 5 and a self-adjusting elastic pushing assembly installed on the first feed cylinder 5, the self-adjusting elastic pushing assembly includes a mounting seat 6, a tension spring 7 and a push rod 8 rotatably mounted on the mounting seat 6, the mounting seat 6 is provided with a cavity allowing the push rod 8 to rotate, the bottom of the cavity is provided with an inclined slope wall 9, the end of the push rod 8 adjacent to the mounting seat 6 is elastically connected to the mounting seat 6 by a tension spring 7, and the end of the push rod 8 away from the mounting seat 6 is provided with an open card slot 10 that fits with the push handle 49 on the ear to be installed and a yield card slot 11 that fits with the end of the nail shaft 48 on the ear to be installed. Furthermore, the linear feeder 2 can adopt a mechanical slide or a pneumatic slide, etc.; a rotating shaft is rotatably installed in the cavity, and the end of the push rod 8 is inserted into the cavity and rotatably connected to the rotating shaft; the two ends of the tension spring 7 are movably connected to the mounting seat 6 and the push rod 8 respectively; the angle between the linear feeder 2 and the horizontal direction is 15°-25°.

[0039] The fully automatic watchband buckle assembly equipment provided by the present invention realizes the automatic assembly of the ear 44 and the watchband 47 through mechanical equipment, while ensuring that the ear 44 enters the shaft groove 50 more smoothly, improving the fit between the ear 44 and the shaft groove 50, reducing the friction resistance between the two, and reducing the accident rate of bending of the ear 44 or damage of the shaft groove 50, thereby effectively improving the product yield.

[0040] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] Example 1

[0044] Please refer to Figure 1-12 , a fully automatic assembly device for watch strap buckles, which includes: a frame 1, a linear feeder 2 installed on the frame 1 and tilted downward, a clamping mechanism, an elastic pushing mechanism and a positioning fixture for limiting the placement of a watch strap 47, the clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder 2 and fixedly connected, the clamping mechanism includes a lifting cylinder 3 and a thumb clamp 4 installed on the lifting cylinder 3; the elastic pushing mechanism includes a first feeding cylinder 5 and a self-adjusting elastic pushing assembly installed on the first feeding cylinder 5, the self-adjusting elastic pushing assembly includes a mounting seat 6, a tension spring 7 and a push rod 8 rotatably installed on the mounting seat 6, the mounting seat 6 is provided with a cavity allowing the push rod 8 to rotate, the bottom of the cavity is provided with an inclined slope wall 9, and the end of the push rod 8 adjacent to the mounting seat 6 is elastically connected to the mounting seat 6 through the tension spring 7;

[0045] Please refer to Figure 11 The end of the push rod 8 away from the mounting seat 6 is provided with an open slot 10 that fits with the push handle 49 on the ear to be installed and a clearance slot 11 that fits with the end of the nail shaft 48 on the ear to be installed.

[0046] For details, please refer to Figure 5, also includes a feeding mechanism for feeding the raw ear 44 to the waiting die base 14, the feeding mechanism includes a vibrating plate 18, a straightening screen and a sliding channel 19 that allows a single raw ear 44 to pass through, the vibrating plate 18 is provided with an inner plate 20, an outer plate 21, a spiral guide channel 22 and a single raw ear channel 23 connected to the spiral guide channel 22, a return port 24 is provided between the inner plate 20 and the outer plate 21, the spiral guide channel 22 spirals from the bottom of the inner plate 20 to the upper part of the outer plate 21, the straightening screen is installed between the inner plate 20 and the outer plate 21, the straightening screen includes a first arc guide plate 25 and a second arc guide plate 26 arranged side by side along the radial direction of the outer plate 21, the discharge end of the single raw ear channel 23 is directed to the first arc guide plate 25 and the second arc guide plate 2 6, one end of the sliding channel 19 is connected with the discharge point of the first arc-shaped guide plate 25, and the other end of the sliding channel 19 is connected with the mold cavity 16 on the waiting die base 14, the first arc-shaped guide plate 25 and the second arc-shaped guide plate 26 are inclined downward away from the center of the outer disk 21, and a card table 27 with a gradually increasing drop is provided between the first arc-shaped guide plate 25 and the second arc-shaped guide plate 26, a baffle plate 28 and a guide slope block 29 are provided on the second arc-shaped guide plate 26, and a blocking plate 30 is provided at the edge of the first arc-shaped guide plate 25 near the discharge end; further, a V-shaped cavity is formed between the baffle plate 30 and the first arc-shaped guide plate 25; the inner diameter of the sliding channel 19 is 1-2mm larger than the outer diameter of the raw ear 44, and the sliding channel 19 only allows a single raw ear 44 to pass through.

[0047] For details, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 , and also includes a loading mechanism for loading the raw ear 44, the loading mechanism includes a first base 12, a loading die base 13 slidably mounted on the first base 12, a waiting die base 14 fixedly mounted on the first base 12, and a second feeding cylinder 15 that provides power for the movement of the loading die base 13, the top surfaces of the waiting die base 14 and the loading die base 13 are parallel to the linear feeder 2, and the loading die base 13 and the waiting die base 14 are both provided with a mold cavity 16 that fits with a single raw ear 44, and the loading die base 13 is provided with a through groove 17 that communicates with the mold cavity 16, and the through groove 17 is arranged perpendicular to the mold cavity 16; further, the through groove 17 can allow the clamping part on the thumb clamp 4 to pass through.

[0048] A limit baffle 42 is provided on the first base 12, and an in-place sensor 43 is provided on the limit baffle 42. The limit baffle 42 is parallel to the top of the loading die base 13; further, the in-place sensor 43 can adopt an in-place switch or other equivalent sensors with in-place detection effect.

[0049] The fully automatic assembly equipment for watch strap buckles provided in this embodiment has a raw ear 44 placed in the inner plate 20 of the vibration plate 18. After the vibration plate 18 is started, the raw ear 44 gradually spirals upward along the spiral guide channel 22 under the action of vibration. Under the action of the single raw ear channel 23, the raw ear 44 passes through one by one, and the excess raw ears 44 fall into the outer plate 21. The raw ears 44 enter the straightening screen, and the push handles 49 on some of the raw ears 44 are hung on the card table 27. The end of the raw ear 44 hanging on the card table 27 away from the push handle 49 is pulled by gravity in the first The curved guide plate 25 is suspended, and a portion of the ear 44 whose push handle 49 has not been successfully fixed to the clamping table 27 falls into the outer disk 21. The ear 44 continues to move along the first curved guide plate 25 until the end of the ear 44 contacts the baffle plate 28. Under the action of the baffle plate 28, the movement of the end of the ear 44 close to the push handle 49 is blocked, while the end of the ear 44 away from the push handle 49 continues to move. The ear 44 rotates at the first curved guide plate 25. At the same time, the guide slope 29 forms a blocking thrust on the push handle 49, causing the ear 44 to rotate The push handle 49 on the ear 44 rotates from downward to upward, and the ear 44 separated from the baffle plate 28 and the guide ramp 29 slides into the V-shaped cavity formed between the baffle plate 30 and the first arc-shaped guide plate 25. At this time, the push handle 49 on the ear 44 is located at the upper part of the inclined ear 44, and the V-shaped cavity can guide and straighten the ear 44 passing through, so that the top of the push handle 49 gradually rotates to the upper part of the outer wall of the ear 44. The ear 44 continues to move under the action of vibration and enters the sliding channel 19. The sliding channel 19 allows the push handle 49 to The single ear 44 pointing upward enters the outer plate 21, while the excess ear 44 is squeezed into the outer plate 21, and the ear 44 enters the mold cavity 16 on the waiting die base 14 through the sliding channel 19. The ear 44 in the outer plate 21 re-enters the inner plate 20 through the return port 24. In this way, the selection and feeding of the ear 44 is achieved, so that the push handle 49 of the ear 44 is located at the upper part of the outer wall of the ear 44, and the end of the ear 44 away from the push handle 49 is facing the mold cavity 16 on the feeding die base 13. Automatic straightening and feeding of the ear 44 can be achieved without manual intervention.

[0050] The raw ear 44 on the waiting die base 14 slides into the mold cavity 16 on the loading die base 13, the second feed cylinder 15 is actuated and pushes the loading die base 13 to move closer to the frame 1, the clamping mechanism moves to above the loading die base 13, the thumb clamp 4 extends into the through groove 17 and clamps the raw ear 44 in the loading die base 13. During this process, the loading die base 13 always blocks the bottom of the mold cavity 16 on the waiting die base 14 to prevent the raw ear 44 in the mold cavity 16 of the waiting die base 14 from sliding out; in this way, the raw ear 44 is automatically and accurately fed to the elastic pushing mechanism, and there is no need to manually adjust the raw ear 44 before loading, which further improves the feeding automation, feeding efficiency and feeding accuracy of the raw ear 44, reduces the amount of manual operation, and provides a guarantee for improving the assembly efficiency of the watch strap 47 and the raw ear 44.

[0051] When the raw ear 44 slides from the waiting die base 14 to the upper feeding die base 13, the limit baffle 42 can limit and block the raw ear 44 that moves out of the upper die cavity 16 of the feeding die base 13 due to inertia. At the same time, the in-position sensor 43 can sense the raw ear 44 being fed. The in-position sensor 43 is connected to the clamping mechanism and the elastic pushing mechanism through the external PLC control system. After receiving the relevant signals, the clamping mechanism and the elastic pushing mechanism automatically feed the raw ear 44.

[0052] Example 2

[0053] The watch strap buckle automatic assembly equipment provided in Example 1 is further optimized, specifically, Figure 6 and Figure 8 As shown, the positioning fixture includes a second base 31, a strap mold base 32 rotatably mounted on the second base 31, and an elastic support component 50. The strap mold base 32 is elastically connected to the second base 31 through the elastic support component 50. The strap mold base 32 is provided with a strap mold groove 33 that fits with the strap 47 to be assembled; further, the elastic support component 50 is located on the strap mold base 32 on a side away from the rotational connection between the strap mold base 32 and the second base 31. In a natural state, the strap mold base 32 is in a horizontal position; the elastic support component 50 can use a spring alone; it can also use a telescopic strut and a spring, the spring is sleeved on the telescopic strut, and the two ends of the telescopic strut are respectively hinged to the second base 31 and the strap mold base 32.

[0054] For details, please refer to Figure 9 A clearance cavity is provided in the strap mold groove 33 at a position corresponding to the shaft groove 50 of the strap 47 to be assembled, and an elastic pushing member is installed in the clearance cavity. The elastic pushing member includes a slide rod 35 slidably mounted on the strap mold base 32, a top spring 36 sleeved on the slide rod 35, and a ball 37 fixedly mounted on the end of the slide rod 35; further, the outer diameter of the ball 37 is larger than the inner diameter of the shaft groove 50 on the strap 47 to be assembled, and the top spring 36 is a spring, one end of the spring abuts against the inner wall of the clearance cavity, and the other end of the spring abuts against the ball 37.

[0055] The fully automatic assembly equipment for watch strap buckles provided in this embodiment is in a natural state. Under the action of the elastic support component 50, the watch strap mold base 32 is in a horizontal position. When assembling the spring ear 44 and the watch strap 47, as the spring ear 44 increases under the action of the watch strap 47, the watch strap mold base 32 gradually tilts downward to adapt to the inclined installation angle of the spring ear 44, further improving the adaptability between the spring ear 44 and the shaft groove 50 on the watch strap 47, reducing the friction resistance between the watch strap 47 and the inner wall of the shaft groove 50, and improving the smoothness of the installation of the spring ear 44 into the shaft groove 50.

[0056] The clearance opening provides space for the insertion of the spring ear 44 to avoid interference with the assembly of the spring ear 44. After the spring ear 44 is inserted into the shaft groove 50 on the watch band 47, the ball 37 pushes the protruding end of the spring ear 44 back into the shaft groove 50 under the action of the push spring 36, and the ball 37 does not hinder the loading and unloading of the watch band 47 or the end of the spring ear 44.

[0057] Example 3

[0058] The watch strap buckle automatic assembly equipment provided in Example 2 is further optimized. Specifically, Figure 6 As shown, the watch band mold base 32 is provided with placement grooves 34 that fit with the two shell ears 46 on the watch dial 45 to be assembled. The placement grooves 34 are symmetrically arranged on both sides of the watch band mold groove 33.

[0059] A limited pressure-covering component is installed on the upper portion of the watchband mold base 32 . The limited pressure-covering component includes a frame 39 and a plurality of pressure-covering rollers 40 rotatably mounted on the frame 39 .

[0060] The pressing rollers 40 are connected by a chain synchronous transmission, and a servo motor 41 for driving one group of the pressing rollers 40 to rotate is installed on the frame 39.

[0061] For details, please refer to Figure 10 A serration portion 38 is provided on the inner wall of the watchband mold groove 33 away from the yield cavity; further, the serration portion 38 can be a conical tooth or an arc tooth.

[0062] The fully automatic assembly equipment for watch strap buckles provided in this embodiment inserts the shell ear 46 on the dial 45 into the placement groove 34. When the assembled watch strap 47 and the ear 44 are cut by an external robot or manually, the watch strap 47 slides along the watch strap mold groove 33, and the two ends of the ear 44 are hidden in the shaft groove 50 under the action of the inner wall of the watch strap mold groove 33. When the ear 44 moves to the placement groove 34, the two ends of the ear 44 are respectively inserted into the mounting holes on the two shell ears 46, thereby completing the assembly of the watch strap 47, the ear 44 and the dial 45. The whole process is simple and convenient. The connection is smooth, which can effectively improve the assembly efficiency and assembly accuracy of the watch strap 47, the ear 44 and the dial 45; the pressing roller 40 can limit the loading of the watch strap 47 into the watch strap mold groove 33, ensuring that the watch strap 47 enters the watch strap mold groove 33 accurately and smoothly, and at the same time avoids the watch strap 47 from being displaced or tilted during the assembly process of the watch strap 47 and the ear 44, so as to ensure the installation accuracy of the watch strap 47 and the ear 44 and ensure that the watch strap 47 does not deflect when moving from the watch strap mold groove 33, thereby providing a guarantee for the smooth assembly of the ear 44 and the shell ear 46. When the watch strap 47 is pulled to move in the watch strap mold groove 33, the serrated portion 38 can cause the ear 44 to move horizontally left and right in the shaft groove 50, so that the ear 44 can expand and flatten the inner wall of the shaft groove 50, preventing the ear 44 from being stuck somewhere in the shaft groove 50, thereby ensuring that the two ends of the ear 44 are subsequently smoothly inserted into the mounting holes of the shell ear 46; the servo motor 41 can drive the watch strap 47 to move in the watch strap mold groove 33, thereby improving the operator's convenience in loading and unloading the watch strap 47.

[0063] The use process of the fully automatic assembly equipment for watch strap buckles provided by the present invention is as follows: the raw ear 44 is adjusted by the feeding mechanism and loaded into the waiting die base 14, the thumb clamp 4 clamps the raw ear 44 in the loading die base 13, and the raw ear 44 is moved to the vicinity of the watch strap die groove 33, and the end of the raw ear 44 faces the feeding hole 51 on the watch strap 47, and the first feeding cylinder 5 drives the mounting base 6 to move until the end of the raw ear 44 close to the push handle 49 is inserted into the clearance slot 11, and the push handle 49 is locked into the opening The strap 47 is placed in the positioning fixture in a horizontal state. Under the action of the tension spring 7, the bottom of the push rod 8 abuts against the inclined slope wall 9. The linear feeder 2 drives the clamping mechanism to feed to the elastic pushing mechanism positioning fixture until the end of the ear 44 is inserted into the feed hole 51 on the strap 47 in an inclined state. The clamping mechanism is reset and disengaged from the clamping of the ear 44. The first feeding cylinder 5 is started again, and the push rod 8 pushes the ear 44 to move into the shaft groove 50. As the end of the ear 44 moves The contact area between the outer wall of the outer wall of the shaft groove 50 on the watch band 47 increases, the push rod 8 and the ear 44 adaptively rotate upward around the rotation connection point on the mounting seat 6, and the angle between the ear 44 and the shaft groove 50 gradually decreases. At the same time, the watch band mold base 32 rotates synchronously with the insertion of the ear 44, and the central axis of the ear 44 and the central axis of the shaft groove 50 tend to coincide. The ear 44 is gradually pushed into the shaft groove 50, and the nail shaft 48 on the ear 44 is rotated as the push rod 8 pushes the push handle 44 on the ear 44. 9 is applied to retract it into the nail barrel, and the feed hole 51 is deformed under the action of external force to a degree that allows the other end of the ear 44 to enter, and the other end of the ear 44 extends into the shaft groove 50 of the strap 47, completing the assembly of the ear 44 and the strap 47; insert the shell ear 46 on the dial 45 into the placement groove 34, and then pull the strap 47, and the strap 47 moves along the strap mold groove 33 until the two ends of the ear 44 are respectively inserted into the mounting holes on the shell ear 46, completing the assembly of the dial 45 and the strap 47.

[0064] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0065] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A fully automatic assembly equipment for watch strap buckles, characterized in that: The invention comprises: a frame (1), a linear feeder (2) installed on the frame (1) and tilted downward, a clamping mechanism, an elastic pushing mechanism and a positioning fixture for limiting the placement of a watch strap (47), wherein the clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder (2) and fixedly connected, the clamping mechanism comprises a lifting cylinder (3) and a thumb clamp (4) installed on the lifting cylinder (3); the elastic pushing mechanism comprises a first feeding cylinder (5) and a self-adjusting elastic pushing assembly installed on the first feeding cylinder (5), and the self-adjusting elastic pushing assembly comprises a A mounting seat (6), a tension spring (7) and a push rod (8) rotatably mounted on the mounting seat (6); the mounting seat (6) is provided with a cavity for allowing the push rod (8) to rotate, the bottom of the cavity is provided with an inclined slope wall (9), the end of the push rod (8) adjacent to the mounting seat (6) is elastically connected to the mounting seat (6) through the tension spring (7), and the end of the push rod (8) away from the mounting seat (6) is provided with an open card slot (10) that fits with the push handle (49) on the ear to be installed (44) and a clearance card slot (11) that fits with the end of the nail shaft (48) on the ear to be installed (44).

2. The fully automatic watch strap buckle assembly equipment according to claim 1, characterized in that: The invention also includes a feeding mechanism for feeding the raw ears (44), the feeding mechanism including a first base (12), a feeding die base (13) slidably mounted on the first base (12), a waiting die base (14) fixedly mounted on the first base (12), and a second feeding cylinder (15) for providing power for the movement of the feeding die base (13), the top end surfaces of the waiting die base (14) and the feeding die base (13) are parallel to the linear feeder (2), the feeding die base (13) and the waiting die base (14) are both provided with a mold cavity (16) that fits a single raw ear (44), the feeding die base (13) is provided with a through groove (17) that communicates with the mold cavity (16), and the through groove (17) is arranged perpendicular to the mold cavity (16).

3. The fully automatic watch strap buckle assembly equipment according to claim 2, characterized in that: The invention also includes a feeding mechanism for feeding the raw ears (44) to the waiting die base (14), the feeding mechanism including a vibrating plate (18), a straightening screener and a sliding channel (19) allowing a single raw ear (44) to pass through, the vibrating plate (18) is provided with an inner plate (20), an outer plate (21), a spiral guide channel (22) and a single raw ear channel (23) connected to the spiral guide channel (22), a return port (24) is provided between the inner plate (20) and the outer plate (21), the spiral guide channel (22) spirals up from the bottom of the inner plate (20) to the upper part of the outer plate (21), the straightening screener is installed between the inner plate (20) and the outer plate (21), the straightening screener includes a first arc-shaped guide plate (25) and a second arc-shaped guide plate (23) arranged side by side along the radial direction of the outer plate (21). Plate (26), the discharge end of the single ear channel (23) transitions and extends between the first arc-shaped guide plate (25) and the second arc-shaped guide plate (26), one end of the sliding channel (19) is connected to the discharge point of the first guide plate (25), and the other end of the sliding channel (19) is connected to the mold cavity (16) on the waiting mold base (14), the first arc-shaped guide plate (25) and the second arc-shaped guide plate (26) are inclined downward away from the center of the outer disk (21), a card table (27) with a gradually increasing drop is provided between the first arc-shaped guide plate (25) and the second arc-shaped guide plate (26), a baffle plate (28) and a guide slope block (29) are provided on the second arc-shaped guide plate (26), and a blocking plate (30) is provided at the edge of the first arc-shaped guide plate (25) near the discharge end.

4. The fully automatic watch strap buckle assembly equipment according to claim 1, characterized in that: The positioning fixture comprises a second base (31), a watchband mold base (32) rotatably mounted on the second base (31), and an elastic support assembly (50); the watchband mold base (32) is elastically connected to the second base (31) via the elastic support assembly (50); and the watchband mold base (32) is provided with a watchband mold groove (33) that fits with the watchband (47) to be assembled.

5. The fully automatic watch strap buckle assembly equipment according to claim 4, characterized in that: The watchband mold base (32) is provided with placement grooves (34) that fit with the two shell ears (46) on the watch dial (45) to be assembled, and the placement grooves (34) are symmetrically arranged on both sides of the watchband mold groove (33).

6. The fully automatic watch strap buckle assembly equipment according to claim 4 or 5, characterized in that: A clearance cavity is provided in the watchband mold groove (33) at a position corresponding to the shaft groove of the watchband to be assembled (47), and an elastic push piece is installed in the clearance cavity. The elastic push piece includes a slide rod (35) slidably installed on the watchband mold base (32), a top spring (36) sleeved on the slide rod (35), and a ball (37) fixedly installed on the end of the slide rod (35).

7. The fully automatic watch strap buckle assembly equipment according to claim 6, characterized in that: A serration portion (38) is provided on the inner wall of the watchband mold groove (33) on a side away from the clearance cavity.

8. The fully automatic watch strap buckle assembly equipment according to claim 4, characterized in that: A limited pressure covering component is installed on the upper part of the watchband mold base (32), and the limited pressure covering component includes a frame (39) and a plurality of pressure covering rollers (40) rotatably installed on the frame (39).

9. The fully automatic watch strap buckle assembly equipment according to claim 8, characterized in that: The pressing rollers (40) are connected via a chain synchronous transmission, and a servo motor (41) for driving one group of pressing rollers (40) to rotate is installed on the frame (39).

10. The fully automatic watch strap buckle assembly equipment according to claim 2, characterized in that: A limit baffle (42) is provided on the first base (12), an in-position sensor (43) is provided on the limit baffle (42), and the limit baffle (42) is parallel to the top of the loading die base (13).

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