Full-automatic watchband cramp assembling equipment

Abstract

The invention relates to the technical field of watchband button nail assembling, in particular to full-automatic watchband button nail assembling equipment. The spring bar and the watchband are automatically assembled through mechanical equipment, it is guaranteed that the spring bar enters the shaft groove more smoothly, the integrating degree of the spring bar and the shaft groove is improved, friction resistance between the spring bar and the shaft groove is reduced, the accident rate of bending of the spring bar or damage of the shaft groove is reduced, and the product yield is effectively increased. Comprising a rack, a linear feeder, a clamping mechanism, an elastic pushing mechanism and a positioning jig, the linear feeder is mounted on the rack and inclines downwards, the positioning jig is used for limiting placement of watchbands, the clamping mechanism and the elastic pushing mechanism are both perpendicular to the linear feeder and fixedly connected with the linear feeder, and the clamping mechanism comprises a lifting cylinder and a thumb clamp mounted on the lifting cylinder; the elastic pushing mechanism comprises a first feeding air cylinder and a self-angle-adjusting elastic pushing assembly installed on the first feeding air cylinder. The self-angle-adjusting elastic pushing assembly comprises an installation base, a tension spring and a push rod rotationally installed on the installation base.

Description

Technical Field

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

[0002] The spring lug (i.e. buckle nail) is an important part of a watch. Its main function is to connect the case lug on the dial with the watch strap. Ninety percent of watches are fixed by the spring lug. 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 connector, 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 a feed 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 feed hole, and the push handle is pushed, so that 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 lug on the dial. For the assembly of the spring lug, watch strap and dial, please refer to Fig.12 ; Assemble the spring ears, strap and dial.

[0003] At present, the assembly between the spring ears, 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 fixed 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, a plurality of 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 located at the rear end, the clamping claw of the clamping claw cylinder is aligned with the discharge port of the material rail to clamp the handle ear. When the material picking slide is located 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 axial 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 ear was pushed into the shaft groove in an inclined manner through the feed hole by the above-mentioned mechanical equipment; it was difficult for the spring ear to fit with the inner wall of the shaft groove, and the friction between the two was large, which would cause the spring ear to bend or the spring ear 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-mentioned technical problems. The automatic assembly of the spring ears and the watch strap can be achieved through mechanical equipment. At the same time, it can ensure that the spring ears can 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 spring ears bending or shaft groove damage, and effectively improve product yield.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: A fully automatic assembly device for watch strap buckles, which is used for assembling watch straps.

[0008] 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 fixture for limiting the placement of the watch strap, the clamping mechanism and the elastic pushing mechanism are both arranged vertically and fixedly connected to the linear feeder, 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 angle elastic pushing assembly installed on the first feed cylinder, the self-adjusting angle 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 matches the push handle on the raw ear to be installed and a yield slot that matches 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°.

[0009] 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, the feeding mechanism includes a first base, a feeding 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 feeding die base, the top end surfaces of the waiting die base and the feeding die base are parallel to the linear feeder, the feeding die base and the waiting die base are both provided with a mold cavity that fits a single raw ear, the feeding die base is provided with a through groove that communicates with the mold cavity, and the through groove is arranged vertically to the mold cavity; further, the through groove allows the clamping part on the thumb clamp to pass through.

[0010] 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 screener and a sliding material channel allowing a single raw ear to pass through, the vibrating plate is provided with an inner plate, an outer plate, a spiral material guide channel and a single raw ear channel connected to the spiral material guide channel, a return port is provided between the inner plate and the outer plate, the spiral material guide channel spirals up from the bottom of the inner plate to the upper part of the outer plate, the straightening screener is installed between the inner plate and the outer plate, the straightening screener includes a first arc-shaped material guide plate and a second arc-shaped material 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 on the side 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.

[0011] As a preferred embodiment of the fully automatic assembly equipment of watch strap buckles provided by the present invention, the positioning fixture 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 via the elastic support component, and the watch strap mold base is provided with a watch strap mold groove that matches 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 horizontally placed state; the elastic support component 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 and the watch strap mold base.

[0012] 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.

[0013] As a preferred embodiment of the fully automatic assembly equipment for watch strap buckles provided by the present invention, a yield 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 push piece is installed in the yield cavity, and the elastic push piece includes a slide rod slidably installed on the watch strap mold base, a top spring sleeved on the slide rod, and a ball fixedly installed on the end of the slide rod; further, the outer diameter of the ball 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 yield cavity, and the other end of the spring abuts against the ball.

[0014] 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 on one side away from the make way cavity; further, the serration portion can be a conical tooth or an arc tooth.

[0015] As a preferred embodiment of the watch strap buckle fully automatic assembly equipment 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.

[0016] As a preferred embodiment of the watch strap buckle fully automatic assembly equipment 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.

[0017] As a preferred embodiment of the watch strap buckle fully automatic assembly equipment 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.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The fully automatic assembly equipment for watch strap buckles provided by the present invention clamps the raw ear by means of a thumb clamp, and the end of the raw ear close to the push handle is inserted 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, and 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 at 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 shrinks into the nail tube 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 allow 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, improves the fit between the spring ear and the shaft groove, reduces the friction resistance between the two, reduces the accident rate of bending of the spring ear or damage of the shaft groove, and effectively improves the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the scheme of the present invention, a brief introduction is 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 paying any creative work.

[0020] Figure 1 A schematic diagram of a three-dimensional structure of a state without a positioning fixture provided by the present invention; Figure 2 A schematic diagram of a three-dimensional structure of a positioning fixture provided by the present invention; Figure 3 A schematic diagram of a top plan structure provided by the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-section structure at AA in the middle; Figure 5 A schematic diagram of the three-dimensional structure of the vibration disk provided by the present invention; Figure 6 for Figure 2 A schematic diagram of the partially enlarged structure at B in the middle; Figure 7 for Figure 2 A schematic diagram of the partially enlarged structure at C in the middle; Figure 8 for Figure 3 The schematic diagram of the local enlarged structure at D in the middle; Fig. 9 for Figure 4 The schematic diagram of the local enlarged structure at E in the middle; Fig.10 for Figure 6 The schematic diagram of the partial enlarged structure at F in the middle; Fig.11 It is a schematic diagram of the three-dimensional structure of the push rod; Fig.12 This is a schematic diagram of the installation relationship between the dial, strap, and spring ears; 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. First 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 ball; 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 nail shaft; 49, a push handle; 50, an elastic support component. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] As described in the background technology, a fully automatic assembly machine for the spring ears of a handlebar of a smart wearable device; 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 with the inner wall of the shaft groove, and the friction between the two is large, which will cause the spring ears to bend or the shaft groove to be broken by the spring ears, resulting in an increase in the product defective rate.

[0023] In order to solve this technical problem, the present invention provides a fully automatic assembly device for watch strap buckles, which is applied to the assembly of watch straps.

[0024] 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 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, 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 matches the push handle 49 on the ear to be installed and a yield card slot 11 that matches 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°.

[0025] The watchband buckle fully automatic 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, improves the fit between the ear 44 and the shaft groove 50, reduces the friction resistance between the two, reduces the bending rate of the ear 44 or the damage rate of the shaft groove 50, and effectively improves the product yield.

[0026] 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 accompanying drawings.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0028] 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, further definition and explanation thereof is not required in subsequent drawings.

[0029] Example 1 Please refer to Figure 1-12, a fully automatic assembly device for watch strap buckles, comprising: 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 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, the self-adjusting elastic pushing assembly comprises 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; Please refer to Fig.11 The end of the push rod 8 away from the mounting seat 6 is provided with an open slot 10 that matches the push handle 49 on the ear 44 to be installed and a yielding slot 11 that matches the end of the nail shaft 48 on the ear 44 to be installed.

[0030] For details, please refer to Figure 5 , and also includes a feeding mechanism for feeding the raw ears 44 to the waiting die base 14, the feeding mechanism includes a vibrating plate 18, a straightening screener and a sliding material 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 material guide channel 22 and a single raw ear channel 23 connected with the spiral material guide channel 22, a return port 24 is provided between the inner plate 20 and the outer plate 21, the spiral material 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 material guide plate 25 and a second arc-shaped material guide plate 26 arranged side by side along the radial direction of the outer plate 21, and the discharge end of the single raw ear channel 23 is toward the first arc-shaped material guide plate 25 and the second arc-shaped material guide plate 2 6, one end of the sliding channel 19 is connected with the discharge point of the first arc-shaped material 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 material guide plate 25 and the second arc-shaped material 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 material guide plate 25 and the second arc-shaped material guide plate 26, a baffle plate 28 and a guide slope block 29 are provided on the second arc-shaped material guide plate 26, and a blocking plate 30 is provided at the edge of the first arc-shaped material guide plate 25 near the discharge end; further, a V-shaped cavity is formed between the baffle plate 30 and the first arc-shaped material 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.

[0031] For details, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 7, and also includes a feeding mechanism for feeding the raw ear 44, the feeding mechanism includes 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 that provides 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 with 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 vertically to the mold cavity 16; further, the through groove 17 can allow the clamping part on the thumb clamp 4 to pass through.

[0032] 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.

[0033] In the fully automatic assembly equipment for watch strap buckles provided in this embodiment, the ear 44 is placed in the inner plate 20 of the vibration plate 18. After the vibration plate 18 is started, the ear 44 gradually spirals upward along the spiral guide channel 22 under the action of vibration. Under the action of the single ear channel 23, the ear 44 passes through one by one, and the excess ear 44 falls into the outer plate 21. The ear 44 enters the straightening screener, and the push handle 49 on a part of the ear 44 is hung on the card table 27, and the end of the ear 44 hanging on the card table 27 away from the push handle 49 is in the first The ear 44 is suspended at the arc guide plate 25, and a part of the push handle 49 that is not successfully clamped with the clamping table 27 falls into the outer plate 21, and the ear 44 continues to move along the first arc 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 arc guide plate 25. At the same time, the guide slope block 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 block 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 passing ear 44, 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 move upward. The single ear 44 with the upper side facing 49 enters the outer plate 21, while the redundant ears 44 are 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, and 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 realized, 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 faces the mold cavity 16 on the feeding die base 13; the automatic straightening and feeding of the ear 44 can be realized without manual intervention.

[0034] 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 the top of 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 degree, 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.

[0035] When the raw ear 44 slides down 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 with 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.

[0036] Example 2 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, and 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, and 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.

[0037] For details, please refer to Fig. 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 push piece is installed in the clearance cavity. The elastic push piece includes a slide rod 35 slidably installed on the strap 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; 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.

[0038] The fully automatic assembly equipment for watch strap buckles provided in the present embodiment is in a natural state where the watch strap mold base 32 is in a horizontal position under the action of the elastic support component 50. 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.

[0039] The clearance opening can provide an entry space for the insertion of the spring ear 44 to avoid interference with the assembly of the spring ear 44. When the spring ear 44 is inserted into the shaft groove 50 on the watch band 47, the protruding end of the spring ear 44 is pushed back into the shaft groove 50 through the ball 37 under the action of the push spring 36, and the ball 37 will not cause any obstruction to the loading and unloading of the watch band 47 and the end of the spring ear 44.

[0040] Example 3 The fully automatic assembly equipment for watch strap buckles 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, and the placement grooves 34 are symmetrically arranged on both sides of the watch band mold groove 33.

[0041] A limited pressure-applying component is installed on the upper part of the watch band mold base 32 , and the limited pressure-applying component includes a frame 39 and a plurality of pressure-applying rollers 40 rotatably installed on the frame 39 .

[0042] 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 .

[0043] For details, please refer to Fig.10 A serration portion 38 is provided on the inner wall of the strap mold groove 33 on the side away from the clearance cavity; further, the serration portion 38 can be a conical tooth or an arc tooth.

[0044] 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 manipulator 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, so that the assembly of the watch strap 47, the ear 44 and the dial 45 is realized. The whole process is The connection is smooth, which can effectively improve the assembly efficiency and assembly accuracy of the watch strap 47, the spring 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, to ensure that the watch strap 47 enters the watch strap mold groove 33 accurately and smoothly, and at the same time avoid the displacement or tilting of the watch strap 47 during the assembly of the watch strap 47 and the spring ear 44, so as to ensure the installation accuracy of the watch strap 47 and the spring ear 44 and ensure that the watch strap 47 does not deflect when moving from the watch strap mold groove 33, thereby providing guarantee for the smooth assembly of the spring ear 44 and the shell ear 46. When the watch strap 47 is pulled to move in the watch strap mold groove 33, the serration 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, avoiding the ear 44 from being stuck somewhere in the shaft groove 50, so as to ensure that the two ends of the ear 44 are 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 convenience of loading and unloading the watch strap 47 for operators.

[0045] 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, the raw ear 44 is moved to the vicinity of the watch strap die groove 33, the end of the raw ear 44 faces the feeding hole 51 on the watch strap 47, the first feeding cylinder 5 drives the mounting seat 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 snapped 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, and 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 strap 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 strap 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 pushed into the shaft groove 50 by the push rod 8. 9 is applied to retract 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, thereby completing the assembly of the dial 45 and the strap 47.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] 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 recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, 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 material clamping mechanism, an elastic pushing mechanism and a positioning fixture for limiting the placement of a watch strap (47), wherein the material clamping mechanism and the elastic pushing mechanism are both arranged vertically with the linear feeder (2) and fixedly connected, the material 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 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 slot (10) that fits with a push handle (49) on a raw ear (44) to be installed and a clearance slot (11) that fits with the end of a nail shaft (48) on the raw ear (44) to be installed.

2. The fully automatic watch strap buckle assembly equipment according to claim 1 is characterized in that: The invention also comprises a feeding mechanism for feeding the raw ears (44), the feeding mechanism comprising 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 die cavity (16) matching with a single raw ear (44), the feeding die base (13) is provided with a through groove (17) communicating with the die cavity (16), and the through groove (17) is arranged perpendicular to the die cavity (16).

3. The fully automatic watch strap buckle assembly equipment according to claim 2 is characterized in that: The invention also comprises a feeding mechanism for feeding the raw ears (44) to the waiting die seat (14), the feeding mechanism comprising a vibrating plate (18), a straightening screener and a sliding material channel (19) allowing a single raw ear (44) to pass through, the vibrating plate (18) being provided with an inner plate (20), an outer plate (21), a spiral material guide channel (22) and a single raw ear channel (23) connected to the spiral material guide channel (22), a material return port (24) communicating with each other is provided between the inner plate (20) and the outer plate (21), the spiral material guide channel (22) spirally rises from the inner bottom of the inner plate (20) to the inner 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 comprises a first arc-shaped material guide plate (25) and a second arc-shaped material guide plate (23) arranged side by side along the radial direction of the outer plate (21). The outer plate (26) is provided with a first arc-shaped guide plate (25) and a second arc-shaped guide 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). 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 on the side away from the center of the outer plate (21). A card table (27) with a gradually increasing height difference 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). 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 component (50); the watchband mold base (32) is elastically connected to the second base (31) via the elastic support component (50); and the watchband mold base (32) is provided with a watchband mold groove (33) that fits with a 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 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 strap mold groove (33) at a position corresponding to the shaft groove of the strap (47) to be assembled, and an elastic push piece is installed in the clearance cavity. The elastic push piece includes a slide rod (35) slidably installed on the strap mold base (32), a push 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 mould 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 comprises 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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