CN109108602B - Automatic assembling machine and assembling method for watch base and bottom cover of clock - Google Patents

Abstract

The invention provides an automatic assembling machine and an assembling method for a watch base and a bottom cover of a clock, wherein the automatic assembling machine for the watch base and the bottom cover of the clock comprises a rack; the workpiece positioning device is arranged on the rack and is used for placing a gauge stand to be assembled and a bottom cover; the lifting mechanism is arranged on the rack; the first driving mechanism is arranged on the rack and used for driving the lifting mechanism to do vertical linear motion; the rotating mechanism is arranged on the lifting mechanism and is used for driving the bottom cover to rotate so as to enable the bottom cover to be screwed on the gauge stand; and the second driving mechanism is arranged on the lifting mechanism and is used for driving the rotating mechanism to rotate. The automatic assembling machine and the assembling method for the watch base and the bottom cover of the clock, provided by the invention, realize automatic operation, effectively improve the product assembling efficiency and the assembling quality, and avoid the problems of inaccurate alignment, time consumption for alignment and low efficiency caused by manual assembly in the prior art.

Description

Automatic assembling machine and assembling method for watch base and bottom cover of clock

Technical Field

The invention belongs to the technical field of timepieces, and particularly relates to an automatic assembling machine and an assembling method for a gauge stand and a bottom cover of a timepiece.

Background

Currently, the assembly of the base and the bottom cover of a timepiece (such as a wristwatch) is mainly performed by a worker using a two-point type clamp to align a slot on the bottom cover and then performing a pressing rotation. Although the meter seat and the bottom cover can be screwed and fixed to a certain degree, the bottom cover is scratched due to inaccurate alignment easily in a manual assembly mode, and the appearance of a product is affected; time is consumed for alignment, and the efficiency is low; in addition, workers screw by hand feeling, the situation of inconsistent screwing force is easy to occur, when the screwing force is insufficient, the bottom cover cannot be completely sealed, and the clock cannot be waterproof, so that serious consequences are caused.

Disclosure of Invention

The invention aims to provide an automatic assembling machine and an assembling method for a watch base and a bottom cover of a clock, and aims to solve the technical problems of inaccurate alignment, time consumption for alignment and low efficiency of manual assembly of the watch base and the bottom cover of the clock in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: an automatic assembling machine for a watch base and a bottom cover of a clock is provided, which is used for assembling the bottom cover of the clock on the watch base of the clock; the method comprises the following steps:

a frame;

the workpiece positioning device is arranged on the rack and is used for placing a gauge stand to be assembled and a bottom cover;

the lifting mechanism is arranged on the rack;

the first driving mechanism is arranged on the rack and used for driving the lifting mechanism to do vertical linear motion;

the rotating mechanism is arranged on the lifting mechanism and is used for driving the bottom cover to rotate so as to enable the bottom cover to be screwed on the gauge stand; and the number of the first and second groups,

and the second driving mechanism is arranged on the lifting mechanism and is used for driving the rotating mechanism to rotate.

Further, the rotating mechanism comprises a suction head which is used for being in contact with the bottom cover, a vacuum device which is used for generating negative pressure by the suction head so as to firmly suck the bottom cover, and a transmission shaft which is rotatably arranged on the lifting mechanism and is used for driving the suction head to rotate so that the suction head drives the bottom cover to rotate;

the vacuum device comprises a dynamic seal supporting seat arranged on the rack and an air pipe connector arranged on the dynamic seal supporting seat and used for being connected with a vacuum generator, wherein the dynamic seal supporting seat is provided with an inner cavity, and the air pipe connector is communicated with the inner cavity; the transmission shaft penetrates through the inner cavity, two ends of the transmission shaft extend out of the dynamic seal supporting seat, one end of the transmission shaft is connected with the second driving mechanism, and the other end of the transmission shaft is sleeved with the suction head; the transmission shaft is provided with an axial air hole and a radial air hole used for communicating or isolating with the inner cavity, the axial air hole is communicated with the radial air hole, the suction head is provided with an inner hole, and the inner hole is communicated with the axial air hole.

Furthermore, the vacuum device further comprises two movable sealing rings which are respectively arranged at two ends of the inner cavity and used for sealing the inner cavity, each movable sealing ring is sleeved outside the transmission shaft, and the transmission shaft is rotatably arranged relative to the movable sealing rings.

Further, the second driving mechanism comprises a first motor and a first coupler, the first motor is arranged on the lifting mechanism, and an output shaft of the first motor is connected with the transmission shaft through the first coupler.

Further, elevating system including set up in mounting plate in the frame, set up in lead screw fixing base on the mounting plate, rotate install in lead screw on the lead screw fixing base, set up in screw-nut on the lead screw and with screw-nut connects fixed plate, first actuating mechanism with the lead screw transmission is connected in order to drive the lead screw rotates, rotary mechanism and second actuating mechanism set up in on the fixed plate.

Further, elevating system still includes guide rail and guide rail slider, the guide rail install in on the mounting plate just the guide rail with lead screw parallel arrangement, guide rail slider slidable mounting in on the guide rail, just guide rail slider with the fixed plate is connected fixedly.

Furthermore, the first driving mechanism comprises a second motor, a driving gear, a driven gear and a second coupler, the driving gear is arranged on an output shaft of the second motor, the driven gear is meshed with the driving wheel, and the screw rod is in transmission connection with the driven gear through the second coupler.

Further, be provided with limit switch, limit switch and change speed switch down on the mounting plate, go up limit switch set up in mounting plate's top, limit switch set up down in mounting plate's bottom, change speed switch set up in go up limit switch with between the limit switch down.

Further, the workpiece positioning device comprises a mounting plate, two baffles, two spiral screws, two clamping pieces and adjusting nuts, wherein the two baffles are arranged at two ends of the mounting plate respectively, two ends of the two spiral screws are arranged on the two baffles in a rotating mode respectively, two thread sections with opposite spiral directions are arranged at two ends of the two spiral screws respectively, the two clamping pieces are screwed with the two thread sections respectively, and the adjusting nuts are arranged at one ends of the two spiral screws and used for driving the two spiral screws to rotate so that the two clamping pieces are close to each other or are away from each other.

The invention also provides an assembly method of the assembly machine of the watch base and the bottom cover of the clock, which comprises the following steps:

A. placing the gauge stand and the bottom cover to be assembled on the workpiece positioning device for positioning;

B. starting the first driving mechanism to drive the lifting mechanism to descend until the rotating mechanism is contacted with the bottom cover;

C. and starting the second driving mechanism to drive the rotating mechanism to rotate, wherein the rotating mechanism drives the bottom cover to rotate so that the bottom cover is screwed on the gauge stand.

The automatic assembling machine and the assembling method for the watch base and the bottom cover of the clock have the advantages that: compared with the prior art, the automatic assembling machine for the gauge stand and the bottom cover of the clock comprises a workpiece positioning device, a first driving mechanism, a second driving mechanism, a lifting mechanism, a rotating mechanism and a bottom cover, wherein the workpiece positioning device is used for placing the gauge stand and the bottom cover to be assembled, the lifting mechanism is driven to descend by the first driving mechanism so that the rotating mechanism contacts the bottom cover, the rotating mechanism is driven to rotate by the second driving mechanism so that the rotating mechanism drives the bottom cover to rotate, and the bottom cover is screwed on the gauge stand; in addition, the invention can set the tightening torque according to the actual requirement, thereby keeping the tightening torque of the bottom cover consistent and effectively improving the assembly quality.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural view of an automatic assembling machine for a bezel and a bottom cover of a timepiece according to an embodiment of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1 at C;

FIG. 3 is an enlarged partial schematic view of FIG. 1 at D;

FIG. 4 is an enlarged partial schematic view of FIG. 1 at F;

FIG. 5 is a sectional view taken along line A-A of FIG. 1;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at G;

FIG. 7 is a sectional view taken along line B-B of FIG. 1;

fig. 8 is a schematic flow chart of a method for assembling a bezel and a bottom cover of a timepiece according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-a frame; 11-a housing; 12-a touch screen; 13-a base; 14-a support frame; 20-a workpiece positioning device; 21-mounting a plate; 22-a baffle; 221-a second radial bearing; 23-double-rotation-direction screw; 24-a clamp; 25-adjusting the nut; 26-a guide block; 30-a lifting mechanism; 31-mounting a bottom plate; 311-upper limit switch; 312-a lower limit switch; 313-a variable speed switch; 32-screw rod fixing seat; 33-a screw rod; 34-a feed screw nut; 35-a fixed plate; 36-a guide rail; 37-a rail slide; 40-a first drive mechanism; 41-a second motor; 42-a drive gear; 43-driven gear; 44-a second coupling; 45-a second motor support; 50-a rotating mechanism; 51-a suction head; 511-inner bore; 512-chuck; 513-clamping blocks; 52-vacuum device; 521-a dynamic seal supporting seat; 5211-lumen; 522-air pipe joint; 523-dynamic sealing ring; 53-a drive shaft; 531-axial air holes; 532-radial air holes; 54-a drive shaft bearing support; 541-tapered roller bearings; 542-first radial bearing; 543-bearing retainer ring; 60-a second drive mechanism; 61-a first motor; 62-a first coupling; 63-first motor support.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1 to 7 together, the automatic assembling machine for the bezel and the bottom cover of the timepiece according to the present invention will now be described. An automatic assembling machine for a watch base and a bottom cover of a clock, which is used for assembling the bottom cover of the clock on the watch base of the clock; comprises a frame 10, a workpiece positioning device 20, a lifting mechanism 30, a first driving mechanism 40, a rotating mechanism 50 and a second driving mechanism 60. The workpiece positioning device 20 is disposed on the frame 10 and is used for placing a watch seat and a bottom cover to be assembled. The elevating mechanism 30 is disposed on the frame 10 and moves linearly up and down with respect to the frame 10. The first driving mechanism 40 is disposed on the frame 10 and drives the lifting mechanism 30 to move up and down linearly. The rotating mechanism 50 is disposed on the lifting mechanism 30 and is used for driving the bottom cover to rotate so that the bottom cover is screwed on the gauge stand. The second driving mechanism 60 is disposed on the elevating mechanism 30 and drives the rotating mechanism 50 to rotate.

Compared with the prior art, the automatic assembling machine for the gauge stand and the bottom cover of the clock comprises a workpiece positioning device 20, a first driving mechanism 40, a lifting mechanism 30, a second driving mechanism 60, a rotating mechanism 50 and a bottom cover, wherein the workpiece positioning device is used for placing the gauge stand and the bottom cover to be assembled, the lifting mechanism 30 is driven to descend through the first driving mechanism 40, so that the rotating mechanism 50 is in contact with the bottom cover, the rotating mechanism 50 is driven to rotate through the second driving mechanism 60, the bottom cover is driven to rotate, and further the bottom cover is screwed on the gauge stand; in addition, the invention can set the tightening torque according to the actual requirement, thereby keeping the tightening torque of the bottom cover consistent and effectively improving the assembly quality.

Further, referring to fig. 1 to 3 together, as an embodiment of the automatic assembling machine for the bezel and the bottom cover of the timepiece of the present invention, the rotating mechanism 50 includes a suction head 51 for contacting the bottom cover, a vacuum device 52 for generating a negative pressure by the suction head 51 to tightly suck the bottom cover, and a transmission shaft 53 rotatably provided on the elevating mechanism 30 and for driving the suction head 51 to rotate so that the suction head 51 drives the bottom cover to rotate. The vacuum device 52 includes a dynamic seal holder 521 disposed on the frame 10, and an air pipe connector 522 disposed on the dynamic seal holder 521 and connected to a vacuum generator (not shown). The dynamic seal support 521 has an inner cavity 5211, and the air pipe connector 522 is communicated with the inner cavity 5211. The transmission shaft 53 penetrates through the inner cavity 5211, two ends of the transmission shaft 53 extend out of the dynamic seal supporting seat 521, one end of the transmission shaft 53 is connected with the second driving mechanism 60, and the other end of the transmission shaft 53 is sleeved with the suction head 51. The transmission shaft 53 is provided with an axial air hole 531 and a radial air hole 532 communicated with or isolated from the inner cavity 5211, the axial air hole 531 extends along the axial direction of the transmission shaft 53, and the radial air hole 532 extends along the radial direction of the transmission shaft 53. The axial air hole 531 is communicated with the radial air hole 532, an inner hole 511 is arranged on the suction head 51, and the inner hole 511 is communicated with the axial air hole 531. When the suction head 51 is lowered to be in contact with the bottom cover, the radial air holes 532 are just positioned in the inner cavity 5211, so that the inner hole 511 is communicated with the air pipe connector 522, the suction head 51 can generate negative pressure by vacuumizing through the vacuum generator, and the bottom cover can be firmly attached to the lower surface of the suction head 51 and can rotate along with the rotation of the suction head 51 due to large friction force, so that the bottom cover and the gauge stand can be screwed. When the shaft 53 is raised, the radial air holes 532 and the cavity 5211 are offset so that the internal bore 511 and the air tube connector 522 are disconnected from each other, and the suction head 51 has no friction against the bottom cover. Preferably, the suction head 51 can be a rubber suction head 51, which can effectively protect the bottom cover from scratching the bottom cover.

Further, referring to fig. 1 to 3 together, as an embodiment of the automatic assembling machine for a watch base and a bottom cover of a timepiece provided by the present invention, the vacuum device 52 further includes two movable sealing rings 523 respectively disposed at two ends of the inner cavity 5211 for sealing the inner cavity 5211, each movable sealing ring 523 is sleeved outside the transmission shaft 53, and the transmission shaft 53 is rotatably disposed relative to the movable sealing ring 523. The dynamic seal ring 523 can effectively seal the inner cavity 5211, and avoid the situation that the inner cavity 5211 cannot be sealed due to a gap between the inner cavity 5211 and the transmission shaft 53.

Further, referring to fig. 1 to 3 together, as a specific embodiment of the automatic assembling machine for a watch base and a bottom cover of a timepiece provided by the present invention, the suction head 51 is fixed at the bottom end of the transmission shaft 53 by the fitting and fixing between the collet 512 and the clamping block 513, and the collet 512 and the clamping block 513 are detachably connected, so that the suction head 51 can be conveniently replaced according to actual needs.

Further, referring to fig. 1 to 3 together, as one embodiment of the automatic assembling machine for the watch case and the bottom cover of the timepiece of the present invention, the rotating mechanism 50 further includes a transmission shaft supporting base 54, the transmission shaft supporting base 54 is disposed on the lifting mechanism 30, and the transmission shaft 53 is rotatably mounted on the transmission shaft supporting base 54. Specifically, in this embodiment, a tapered roller bearing 541 and a first axial bearing 542 are sequentially arranged in the transmission shaft support 54 from bottom to top, a bearing ring 543 is arranged above the first radial bearing 542, and the top end of the transmission shaft 53 sequentially passes through the tapered roller bearing 541, the first axial bearing 542 and the bearing ring 543 and is connected to the second driving mechanism 60.

Further, referring to fig. 1 to 3 together, as an embodiment of the automatic assembling machine for a bezel and a bottom cover of a timepiece of the present invention, the second driving mechanism 60 includes a first motor 61 and a first coupling 62, the first motor 61 is disposed on the lifting mechanism 30, and an output shaft of the first motor 61 is connected to the transmission shaft 53 through the first coupling 62. The rotation of the first motor 61 drives the transmission shaft 53 to rotate, thereby realizing the rotation of the suction head 51. Specifically, in this embodiment, the second driving mechanism 60 further includes a first motor support 63, the first motor support 63 is disposed on the lifting mechanism 30, and the first motor 61 is fixed on the first motor support 63. It should be noted that the second driving mechanism 60 is not limited to this, for example, in other preferred embodiments of the present invention, the second driving mechanism 60 may also be a cylinder, and the linear motion of the cylinder is converted into the rotational motion of the transmission shaft 53 through a rack and pinion.

Further, referring to fig. 1 to 2 together, as a specific embodiment of the automatic assembling machine for the watch base and the bottom cover of the timepiece provided by the present invention, the lifting mechanism 30 includes a mounting bottom plate 31 disposed on the frame 10, a lead screw fixing seat 32 disposed on the mounting bottom plate 31, a lead screw 33 rotatably mounted on the lead screw fixing seat 32, a lead screw nut 34 disposed on the lead screw 33, and a fixing plate 35 fixedly connected to the lead screw nut 34, the first driving mechanism 40 is in transmission connection with the lead screw 33 to drive the lead screw 33 to rotate, and the rotating mechanism 50 and the second driving mechanism 60 are disposed on the fixing plate 35. When the bottom cover needs to be assembled on the gauge stand, firstly, the first driving mechanism 40 drives the screw rod 33 to rotate, and the fixed plate 35 descends along with the descending of the screw rod nut 34, so that the rotating mechanism 50 is driven to descend until the rotating mechanism 50 is contacted with the bottom cover; then, the second driving mechanism 60 drives the rotating mechanism 50 to rotate so that the rotating mechanism 50 drives the bottom cover to rotate, and the bottom cover is screwed on the watch seat. Specifically, in the present embodiment, the dynamic seal support 521 is mounted on the mounting base plate 31, the transmission shaft support 54 and the first motor 61 support are disposed on the fixing plate 35, the transmission shaft support 54 is disposed at the lower end of the fixing plate 35, and the first motor 61 support is disposed at the upper end of the fixing plate 35.

Further, referring to fig. 1 to 2 together, as a specific embodiment of the automatic assembling machine for a watch base and a bottom cover of a timepiece provided by the present invention, the lifting mechanism 30 further includes a guide rail 36 and a guide rail slider 37, the guide rail 36 is mounted on the mounting base plate 31, the guide rail 36 is parallel to the screw 33, the guide rail slider 37 is slidably mounted on the guide rail 36, and the guide rail slider 37 is fixedly connected to the fixing plate 35, and the fixing plate 35 can be lifted and lowered more smoothly to avoid shaking due to the matching arrangement of the guide rail 36 and the guide rail slider 37.

Further, referring to fig. 1 to 2 together, as an embodiment of the automatic assembling machine for the bezel and the bottom cover of the timepiece of the present invention, the first driving mechanism 40 includes a second motor 41, a driving gear 42, a driven gear 43 and a second coupling 44, the driving gear 42 is disposed on an output shaft of the second motor 41, the driven gear 43 is engaged with the driving wheel, and the screw 33 and the driven gear 43 are in transmission connection through the second coupling 44. By the cooperation of the driving gear 42 and the driven gear 43, the rotational motion of the second motor 41 can be converted into the rotational motion of the lead screw 33. Specifically, in the present embodiment, the driving gear 42 and the driven gear 43 are tapered, so that the direction can be changed, and thus the space can be more effectively utilized and the volume can be reduced. Preferably, the first driving mechanism 40 further includes a second motor support 45, the second motor support 45 is disposed on the frame 10, and the second motor 41 is fixed on the second motor support 45. It should be noted that the arrangement of the first driving mechanism 40 is not limited to this, for example, in another preferred embodiment of the present invention, the first driving mechanism 40 may also be an air cylinder, and a piston rod of the air cylinder is directly connected to the rotating mechanism 50, so as to drive the rotating mechanism 50 to move up and down.

Further, referring to fig. 1, 2 and 7, as an embodiment of the automatic assembling machine for the bezel and the bottom cover of the timepiece of the present invention, an upper limit switch 311, a lower limit switch 312 and a speed change switch 313 are provided on the mounting base plate 31, the upper limit switch 311 is provided at the top end of the mounting base plate 31, the lower limit switch 312 is provided at the bottom end of the mounting base plate 31, and the speed change switch 313 is provided between the upper limit switch 311 and the lower limit switch 312. The automatic assembly machine of the base and the bottom cover of the timepiece further comprises a control system (not shown), to which an upper limit switch 311, a lower limit switch 312 and a change-speed switch 313 are connected, respectively. The upper limit switch 311 is used to limit the highest position at which the fixing plate 35 ascends, and the lower limit switch 312 is used to limit the lowest position at which the fixing plate 35 descends. The speed change switch 313 is used for sensing the position of the descending of the fixed plate 35 to the speed change switch 313. When the fixing plate 35 rises to the position of the upper limit switch 311, the upper limit switch 311 sends a signal to the control system, and the control system sends a stop command to the first driving mechanism 40, so as to close the first driving mechanism 40 to control the fixing plate 35 to stop rising. When the fixing plate 35 descends to the position of the lower limit switch 312, the lower limit switch 312 sends a signal to the control system, and the control system sends a stop command to the first driving mechanism 40, so as to turn off the first driving mechanism 40 to control the fixing plate 35 to stop descending. The arrangement of the upper limit switch 311 and the lower limit switch 312 can effectively protect the fixing plate 35, and prevent the fixing plate 35 from being damaged due to excessive movement. When the fixed plate 35 descends to the position of the speed change switch 313, the speed change switch 313 sends a signal to the control system, the control system sends a speed reduction command to the first driving mechanism 40 to reduce the descending speed of the fixed plate 35, and simultaneously the control system sends an activation command to the second driving mechanism 60 to drive the rotating mechanism 50 to rotate and simultaneously controls the vacuum generator to be activated to perform the vacuum pumping operation.

Further, referring to fig. 4, 5 and 6 together, as a specific embodiment of the automatic assembling machine for the watch base and the bottom cover of the timepiece of the present invention, the workpiece positioning device 20 includes a mounting plate 21, two blocking plates 22, a double-handed screw 23, two clamping members 24, and an adjusting nut 25, the two blocking plates 22 are respectively disposed at two ends of the mounting plate 21, two ends of the double-handed screw 23 are respectively rotatably disposed on the two blocking plates 22, two ends of the double-handed screw 23 are respectively provided with threaded sections (not shown) with opposite turning directions, the two clamping members 24 are respectively screwed with the two threaded sections, and the adjusting nut 25 is disposed at one end of the double-handed screw and is configured to drive the double-handed screw to rotate so as to make the two clamping members 24 approach to each other or separate from each other. By rotating the adjusting nut 25, the double-handed screw 23 is rotated, and the two clamping pieces 24 are moved close to each other to clamp the bezel and the bottom cover, or the adjusting nut 25 is rotated in the reverse direction, so that the double-handed screw 23 is rotated in the reverse direction, and the two clamping pieces 24 are moved away from each other to loosen the bezel and the bottom cover. Preferably, the double-handed screw 23 is mounted on the two baffles 22 by two second axial bearings 221, respectively.

Further, referring to fig. 4, 5 and 6, as an embodiment of the automatic assembling machine for the bezel and the bottom cover of the timepiece of the present invention, the workpiece positioning device 20 further includes two guide blocks 26, and the two guide blocks 26 are mounted on the mounting plate 21 and respectively located at two sides of the clamping member 24, so as to guide the clamping member 24. Specifically, the cross-sectional shape of the clamping member 24 is T-shaped, and both sides of the clamping member 24 respectively abut against the upper surfaces of the two guide blocks 26.

Further, referring to fig. 1, as a specific embodiment of the automatic assembling machine for the bezel and the bottom cover of the timepiece of the present invention, a case 11 is installed outside the frame 10, which can provide a protection effect. The touch screen 12 is installed on the housing 11, and a user can set related parameters through the touch screen 12, so that the operation is very simple and convenient.

Further, referring to fig. 1, as an embodiment of the automatic assembling machine for a bezel and a bottom cover of a timepiece of the present invention, the frame 10 includes a base 13 and a supporting frame 14 provided on the base 13, the workpiece positioning device 20 is mounted on the base 13, and the lifting mechanism 30 and the first driving mechanism 40 are provided on the supporting frame 14.

The working process of the automatic assembling machine for the watch base and the bottom cover of the clock provided by the invention is as follows:

when the bottom cover needs to be assembled on the gauge stand, firstly, the gauge stand and the bottom cover are clamped and positioned by using the workpiece positioning device 20;

secondly, the second motor 41 is started to enable the second motor 41 to rotate in the forward direction, the driving gear 42 and the driven gear 43 drive the screw rod 33 to rotate fast, so that the screw rod nut 34 is driven to descend, and at the moment, the fixing plate 35 descends along with the screw rod nut 34, so that the transmission shaft 53 installed on the fixing plate 35 descends; when the fixing plate 35 descends to the position of the speed change switch 313, the second motor 41 is changed into slow forward rotation, the fixing plate 35 descends slowly, and simultaneously the first motor 61 is started, so that the transmission shaft 53 rotates forwards, the suction head 51 is driven to rotate forwards, and simultaneously the vacuum generator is started, and vacuum is pumped through the air pipe connector 522;

then, when the suction head 51 contacts with the bottom cover, the radial air holes 532 are just positioned in the inner cavity 5211, so that the inner hole 511 is communicated with the air pipe connector 522, negative pressure is generated in the suction head 51 due to vacuum pumping, and great friction force is generated, so that the bottom cover can be firmly attached to the lower surface of the suction head 51 and can rotate along with the rotation of the suction head 51, and the screwing of the bottom cover and the gauge stand is realized.

Finally, when the tightening torque of the suction head 51 reaches a preset tightening torque, the vacuum generator is turned off, the first motor 61 stops rotating, and the second motor 41 rotates in reverse direction to move the suction head 51 upward to be detached from the bottom cover; when the fixing plate 35 is lifted to the upper limit switch 311, the second motor 41 stops rotating, and the assembled bottom cover and the watch base are taken out.

Referring to fig. 8, the present invention also provides a method for assembling a bezel and a bottom cover of a timepiece, comprising the steps of:

and S10, placing the gauge stand and the bottom cover to be assembled on the workpiece positioning device for positioning.

And S20, starting the first driving mechanism to drive the lifting mechanism to descend until the rotating mechanism is contacted with the bottom cover.

And S30, starting the second driving mechanism to drive the rotating mechanism to rotate, wherein the rotating mechanism drives the bottom cover to rotate so that the bottom cover is screwed on the gauge stand.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. An automatic assembling machine for a watch base and a bottom cover of a clock, which is used for assembling the bottom cover of the clock on the watch base of the clock; the method is characterized in that: the method comprises the following steps:

a frame;

the workpiece positioning device is arranged on the rack and is used for placing a gauge stand to be assembled and a bottom cover;

the lifting mechanism is arranged on the rack;

the first driving mechanism is arranged on the rack and used for driving the lifting mechanism to do vertical linear motion;

the rotating mechanism is arranged on the lifting mechanism and is used for driving the bottom cover to rotate so as to enable the bottom cover to be screwed on the gauge stand; and the number of the first and second groups,

the second driving mechanism is arranged on the lifting mechanism and is used for driving the rotating mechanism to rotate;

the rotating mechanism comprises a suction head which is used for being in contact with the bottom cover, a vacuum device which is used for generating negative pressure by the suction head so as to firmly suck the bottom cover, and a transmission shaft which is rotatably arranged on the lifting mechanism and is used for driving the suction head to rotate so that the suction head drives the bottom cover to rotate;

the vacuum device comprises a dynamic seal supporting seat arranged on the rack and an air pipe connector arranged on the dynamic seal supporting seat and used for being connected with a vacuum generator, wherein the dynamic seal supporting seat is provided with an inner cavity, and the air pipe connector is communicated with the inner cavity; the transmission shaft penetrates through the inner cavity, two ends of the transmission shaft extend out of the dynamic seal supporting seat, one end of the transmission shaft is connected with the second driving mechanism, and the other end of the transmission shaft is sleeved with the suction head; the transmission shaft is provided with an axial air hole and a radial air hole which is communicated with or isolated from the inner cavity, the axial air hole is communicated with the radial air hole, the suction head is provided with an inner hole which is communicated with the axial air hole, when the radial air hole is communicated with the inner cavity, the suction head generates negative pressure to adsorb the bottom cover,

the vacuum device also comprises two movable sealing rings which are respectively arranged at the two ends of the inner cavity and used for sealing the inner cavity, each movable sealing ring is sleeved outside the transmission shaft, and the transmission shaft is rotationally arranged relative to the movable sealing rings,

the rotating mechanism further comprises a transmission shaft supporting seat, the transmission shaft supporting seat is arranged on the lifting mechanism, and the transmission shaft is rotatably arranged on the transmission shaft supporting seat.

2. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in claim 1, characterized in that: the second driving mechanism comprises a first motor and a first coupler, the first motor is arranged on the lifting mechanism, and an output shaft of the first motor is connected with the transmission shaft through the first coupler.

3. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in claim 1, characterized in that: elevating system including set up in mounting plate in the frame, set up in lead screw fixing base on the mounting plate, rotate install in lead screw on the lead screw fixing base, set up in screw-nut on the lead screw and with screw-nut connects fixed plate, first actuating mechanism with the lead screw transmission is connected in order to drive the lead screw rotates, rotary mechanism and second actuating mechanism set up in on the fixed plate.

4. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in claim 3, characterized in that: the lifting mechanism further comprises a guide rail and a guide rail sliding block, the guide rail is installed on the installation base plate, the guide rail is parallel to the screw rod, the guide rail sliding block is installed on the guide rail in a sliding mode, and the guide rail sliding block is fixedly connected with the fixing plate.

5. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in claim 3, characterized in that: the first driving mechanism comprises a second motor, a driving gear, a driven gear and a second coupler, the driving gear is arranged on an output shaft of the second motor, the driven gear is meshed with the driving gear, and the lead screw is in transmission connection with the driven gear through the second coupler.

6. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in claim 3, characterized in that: the mounting base plate is provided with an upper limit switch, a lower limit switch and a speed change switch, wherein the upper limit switch is arranged at the top end of the mounting base plate, the lower limit switch is arranged at the bottom end of the mounting base plate, and the speed change switch is arranged between the upper limit switch and the lower limit switch.

7. An automatic assembling machine for bezel and bottom cover of timepiece as claimed in any one of claims 1 to 6, wherein: work piece positioner includes mounting panel, two baffles, bispin to screw rod, two holders and adjusting nut, two the baffle set up respectively in the both ends of mounting panel, bispin rotates respectively to the both ends of screw rod and sets up in two on the baffle, bispin is provided with respectively to the opposite screw thread section, two to the both ends of screw rod, two the holder is respectively with two the screw thread section spiral shell closes, adjusting nut set up in bispin is used for driving to the one end of screw rod bispin order to make two the holder draws close each other or keeps away from each other to the screw rod is rotatory.

8. A method of assembling a timepiece bezel and bottom cover assembling machine according to any one of claims 1 to 7, wherein: the method comprises the following steps:

A. placing the gauge stand and the bottom cover to be assembled on the workpiece positioning device for positioning;

B. starting the first driving mechanism to drive the lifting mechanism to descend until the rotating mechanism is contacted with the bottom cover;

C. and starting the second driving mechanism to drive the rotating mechanism to rotate, wherein the rotating mechanism drives the bottom cover to rotate so that the bottom cover is screwed on the gauge stand.