Automatic assembly equipment and assembly process of eccentric cam and retaining ring of three-cam balance wheel seat

Abstract

The present invention discloses an automatic assembly device for an eccentric cam and a retaining ring of a three-cam balance wheel seat and an assembly process thereof. The scheme includes a balance wheel seat feeding device, a balance wheel seat positioning clamping device, a retaining ring feeding device, a screw feeding device, a screw tightening device, an eccentric cam feeding device, an eccentric cam pressing device and a feeding device; the screw tightening device includes a support frame, a mobile platform, a platform driving component, an electric screwdriver and a screw positioning component; the eccentric cam pressing device includes a pressing rod, a universal pressing head and a pressing driving component, and the balance wheel seat feeding device, the retaining ring feeding device, the screw feeding device and the eccentric cam feeding device are used for feeding, and the balance wheel seat positioning clamping device is used for positioning and clamping, and the fastening screw is fixed to the balance wheel seat by the screw tightening device, thereby completing the installation of the retaining ring, and a universal pressing head is provided at the lower end of the pressing rod to improve the quality of pressing, and finally the material is unloaded by the unloading device, so as to improve the production efficiency and reduce the strength.

Description

Technical Field

[0001] The invention relates to the field of assembly equipment, and in particular to automatic assembly equipment for an eccentric cam and a retaining ring of a three-cam balance wheel seat and an assembly process thereof. Background Art

[0002] The three-cam balance wheel seat is a component of the diaphragm booster pump, refer to the prior patent application with application number 201510018607.7, refer to Fig.10 The three-cam balance wheel seat 6 mainly includes a balance wheel seat 901, a bearing 902, an inclined eccentric cam 905, a retaining ring 903 and a fastening screw 904. Three balance wheels 9011 are convexly arranged on the balance wheel seat 901. The bearing 902 is installed at the center of the balance wheel seat 901. The inclined eccentric cam 905 is inserted at the center of the bearing 905. The inclined eccentric cam 905 is transitionally matched with the inner ring of the bearing 902. The balance wheel seat 901 is provided with a threaded hole (not shown in the figure) on the reverse side of the balance wheel 9011. The fastening screw 904 fixes the retaining ring 903 to the balance wheel seat 901 through the threaded hole.

[0003] refer to Fig.11 as well as Fig.12 The inclined eccentric cam 905 includes a plug-in shaft portion 9051 and an inclined end portion 9052. The diameter of the plug-in shaft portion 9051 is smaller than that of the inclined end portion 9052. The plug-in shaft portion 9051 cooperates with the bearing 902, and the surface of the inclined end portion 9052 is in an inclined state.

[0004] At present, the positioning and installation of the retaining ring are relatively simple, while the process of installing the inclined eccentric cam in the inner hole of the bearing is relatively difficult. Since the surface of the inclined end portion of the inclined eccentric cam is in an inclined state, during the installation process, a horizontal downward force is applied to the inclined end portion of the inclined eccentric cam to move it downward and press it into the bearing. Since the inclined end portion forms an inclined angle with the horizontal plane, generally, pressure is applied to the inclined eccentric cam from top to bottom. This press-fitting method is a point-to-surface contact, and the force acting on the surface of the inclined end portion does not pass through the center of the inclined eccentric cam because its direction of action does not pass through the center of the inclined eccentric cam. Therefore, the inclined eccentric cam is prone to tipping over or deformation during the press-fitting process, which ultimately leads to low quality of the assembled product.

[0005] Therefore, in the actual production process, in order to ensure the assembly quality of the inclined eccentric cam, the inclined eccentric cam is assembled manually by pressing it down in sections, that is, the inclined eccentric cam is first pressed in a part, and the axis of the inclined eccentric cam is kept coincident with the axis of the bearing, and then greater pressure is continued to be applied to the inclined eccentric cam to press the inclined eccentric cam down until the inclined eccentric cam is pressed into place.

[0006] The manual assembly method has high production quality and high yield rate, but low production efficiency.

[0007] At present, the assembly process of the three-cam balance wheel seat is as follows: first, at the work station for assembling the retaining ring, an electric screwdriver is used manually to tighten the fastening screws on the balance wheel seat and fix the retaining ring. After the retaining ring is assembled, it is transferred to the work station for assembling the inclined eccentric cam, and another person uses a manual punch to press the inclined eccentric cam onto the inner ring of the bearing on the balance wheel seat.

[0008] The entire process of assembling the retaining ring and the inclined eccentric cam needs to be completed at two workstations and is assembled manually, which is inefficient and cannot meet production needs.

[0009] Therefore, it is necessary to provide a solution that can automatically assemble the inclined eccentric cam and the retaining ring on the three-cam balance wheel seat. Summary of the invention

[0010] In order to solve the above technical problems, the first purpose of the present invention is to provide an automatic assembly equipment for the eccentric cam and retaining ring of a three-cam balance wheel seat, which includes a balance wheel seat loading device, a balance wheel seat positioning and clamping device, a retaining ring loading device, a screw loading device, a screw tightening device, an eccentric cam loading device, an eccentric cam pressing device and a unloading device. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat can automatically assemble the retaining ring and the inclined eccentric cam, and has the advantages of reduced labor intensity, high production efficiency and good assembly quality.

[0011] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0012] The automatic assembly equipment of the eccentric cam and retaining ring of the three-cam balance wheel seat includes a balance wheel seat feeding device, a balance wheel seat positioning clamping device, a retaining ring feeding device, a screw feeding device, a screw tightening device, an eccentric cam feeding device, an eccentric cam pressing device and a feeding device;

[0013] The balance wheel seat feeding device, the retaining ring feeding device, the screw feeding device and the eccentric cam feeding device respectively feed the balance wheel seat, the retaining ring, the fastening screw and the inclined eccentric cam onto the balance wheel seat positioning clamping device; the screw tightening device fastens the fastening screw onto the balance wheel seat and fixes the retaining ring; the eccentric cam presses the inclined eccentric cam into the inner ring of the bearing of the balance wheel seat; the unloading device removes the balance wheel seat with the inclined eccentric cam and the retaining ring installed from the balance wheel seat positioning clamping device.

[0014] Preferably, the balance wheel seat feeding device includes a balance wheel seat vibration plate and a balance wheel seat picking assembly, and a first material guide track is provided at the upper end of the balance wheel seat vibration plate. The balance wheel seat picking assembly moves the balance wheel seat from the end of the first material guide track to the balance wheel seat positioning and clamping device.

[0015] Preferably, the retaining ring feeding device includes a retaining ring vibrating disk and a retaining ring picking assembly, a second material guide track is provided at the upper end of the retaining ring vibrating disk, and the retaining ring picking assembly moves the retaining ring from the end of the second material guide track to the balance wheel seat on the balance wheel seat positioning clamping device and positions the retaining ring.

[0016] Preferably, the screw feeding device includes a screw vibration plate and a quantitative conveying component, the upper end of the screw vibration plate is connected to a plurality of third material guide rails, the quantitative conveying component includes a quantitative material taking component, a plurality of driving air pipes and a plurality of material guide air pipes, the quantitative material taking component takes a fixed number of fastening screws from the end of the third material guide rail into the material guide air pipe, the other end of the material guide air pipe is connected to the screw tightening device, the driving air pipe provides a feeding airflow into the material guide air pipe to convey the fastening screws to the screw tightening device.

[0017] Preferably, the screw-tightening device includes a support frame, a mobile platform, a platform driving assembly, a plurality of electric screwdrivers and a screw positioning assembly. The mobile platform is slidably connected to the support frame, and the platform driving assembly drives the mobile platform to vertically rise and fall along the support frame. A plurality of electric screwdrivers are arranged on the mobile platform. The screw positioning assembly is fixed to the support frame and arranged below the electric screwdriver. The screw positioning assembly positions the fastening screws transported by the material guide air pipe, and the electric screwdriver fixes the fastening screws on the balance wheel seat as the mobile platform descends.

[0018] Preferably, the eccentric cam feeding device includes an eccentric cam vibrating disk and an eccentric cam picking assembly, a fourth material guide track is provided at the upper end of the eccentric cam vibrating disk, an eccentric cam positioning assembly is provided at the end of the fourth material guide track, the eccentric cam positioning assembly includes a positioning seat and a main limiting cylinder arranged on the positioning seat, a positioning guide groove connected to the fourth material guide track is opened on the positioning seat in a horizontal direction, the extension direction of the main limiting cylinder is consistent with the opening direction of the positioning guide groove, a limiting block is provided on the extension end of the main limiting cylinder, an arc-shaped limiting portion is provided on the limiting block, the limiting portion abuts against the cylindrical portion of the inclined eccentric cam, and the eccentric cam picking assembly transfers the inclined eccentric cam from the positioning seat to the balance wheel seat positioning clamping device.

[0019] Preferably, the eccentric cam pressing device includes a pressing rod, a universal pressing head and a pressing drive component, wherein the universal pressing head is rotatably arranged at the lower end of the pressing rod, and the universal pressing head is located above the balance wheel seat positioning clamping device, and the pressing drive component drives the pressing rod to rise and fall in the vertical direction, and the lifting direction of the pressing rod coincides with the center line of the balance wheel seat on the balance wheel seat positioning clamping device.

[0020] By such arrangement, the balance wheel seat vibration plate, the retaining ring vibration plate, the screw vibration plate and the eccentric cam vibration plate respectively store the balance wheel seat, the retaining ring, the fastening screw and the inclined eccentric cam to be loaded, and the balance wheel seat, the retaining ring, the fastening screw and the inclined eccentric cam are respectively transported along the first material guide track, the second material guide track, the third material guide track and the fourth material guide track through the vibration action. The balance wheel seat picking assembly transfers the balance wheel seat located at the end of the first material guide track to the balance wheel seat positioning clamping device, and the balance wheel seat positioning clamping device positions and clamps the balance wheel seat positioning clamping device; the retaining ring picking assembly The material assembly transfers the retaining ring at the end of the second material guide track to the balance wheel seat positioning clamping device and positions it; the quantitative conveying assembly conveys a fixed number of fastening screws from the end of the third material guide track to the screw tightening device, and the platform driving assembly drives the mobile platform to descend, so that the electric screwdriver fixes the fastening screws on the balance wheel seat as the mobile platform descends, thereby completing the installation of the retaining ring; the eccentric cam picking assembly transfers the inclined eccentric cam to the balance wheel seat positioning clamping device and places the inclined eccentric cam at the center of the bearing on the balance wheel seat, and then the pressing rod is driven along the pressing drive member The universal pressing head at the pressing rod end abuts against the upper surface of the inclined eccentric cam as the pressing rod descends. As the pressing rod descends, the universal pressing head presses the inclined eccentric cam into the bearing of the balance wheel seat. Since the universal pressing head can rotate freely, the lower surface of the universal pressing head can fully contact the upper surface of the inclined eccentric cam. The lifting and lowering direction of the pressing rod coincides with the center line direction of the balance wheel seat, that is, the lifting and lowering direction of the pressing rod coincides with the axis of the bearing on the balance wheel seat. Therefore, when the pressing rod descends and drives the universal pressing head to press down the inclined eccentric cam, the universal pressing head contacts the inclined eccentric cam through surface-to-surface contact. Applying uniform vertical downward pressure to the inclined eccentric cam makes the inclined eccentric cam press-fitted smoothly, thereby improving the press-fitting quality, and can be press-fitted in place at one time, with high production efficiency. Finally, the balance wheel seat with the inclined eccentric cam and the retaining ring installed is removed from the balance wheel seat positioning clamping device through the unloading device, thereby realizing automatic loading of the balance wheel seat, the retaining ring, the fastening screws, and the inclined eccentric cam, automatic assembly of the retaining ring, automatic press-fitting of the inclined eccentric cam, and unloading, thereby realizing the automated assembly of the inclined eccentric cam and the retaining ring of the three-cam balance wheel seat, reducing labor intensity and improving production efficiency.

[0021] Preferably, the balance wheel seat material picking assembly includes a first translation drive, a first lifting drive and a first tensioning and relaxing jaw, the first tensioning and relaxing jaw is closed to clamp the balance wheel seat or opened to place the balance wheel seat, the first lifting drive drives the first tensioning and relaxing jaw to rise and fall in the vertical direction, and the first translation drive drives the first lifting drive to move back and forth in the horizontal direction between the end of the first material guide rail and the balance wheel seat positioning clamping device.

[0022] Through such an arrangement, the first translation drive member can drive the first lifting drive member to move horizontally, and the first tensioning and relaxing clamp is connected to the first lifting drive member and can be lifted and lowered under the drive of the first lifting drive member. The first tensioning and relaxing clamp can be closed or opened. When taking materials, the first translation drive member drives the first lifting drive member to move toward the end of the first material guide track. After reaching the position, the first lifting drive member drives the first tensioning and relaxing clamp to descend, and then the first tensioning and relaxing clamp clamp clamps the balance wheel seat at the end of the first material guide track. Then the first lifting drive member drives the first tensioning and relaxing clamp to rise, and the first translation drive member drives the first lifting drive member to move toward the balance wheel seat positioning and clamping device. After moving into position, the first lifting drive member descends, and the first tensioning and relaxing clamp opens, thereby placing the balance wheel seat on the balance wheel seat positioning and clamping device, and positioning and clamping the balance wheel seat through the balance wheel seat positioning and clamping device, thereby realizing automatic loading, positioning and clamping of the balance wheel seat, facilitating production, and improving production efficiency.

[0023] Preferably, the retaining ring picking assembly includes a second translation drive, a second lifting drive and a second tensioning and relaxing jaw, the second tensioning and relaxing jaw is opened to abut against the inner wall of the center hole on the retaining ring to clamp the retaining ring or contracts to place the retaining ring, the second lifting drive drives the second tensioning and relaxing jaw to rise and fall in the vertical direction, and the second translation drive drives the second lifting drive to move back and forth in the horizontal direction between the end of the second material guide rail and the balance wheel seat positioning clamping device.

[0024] Through such an arrangement, the second translation drive member can drive the second lifting drive member to move horizontally, and the second tensioning and relaxing jaw is connected to the second lifting drive member and can be lifted and lowered under the drive of the second lifting drive member. The second tensioning and relaxing jaw can be closed or opened. When taking materials, the second translation drive member drives the second lifting drive member to move toward the end of the second material guide track. After it is in place, the second lifting drive member drives the second tensioning and relaxing jaw to descend, and then the second tensioning and relaxing jaw opens to clamp the retaining ring on the end of the second material guide track, and then the second lifting drive member drives the second tensioning and relaxing jaw to rise, and the second translation drive member drives the second lifting drive member to move toward the balance wheel seat positioning clamping device. After moving into place, the second lifting drive member descends, and the second tensioning and relaxing jaw contracts, thereby placing the retaining ring on the balance wheel seat positioning clamping device and positioning it, thereby realizing automatic loading and positioning of the retaining ring, facilitating production, and improving production efficiency.

[0025] Preferably, the retaining ring material picking assembly also includes a retaining ring positioning assembly, the retaining ring positioning assembly includes a retaining ring positioning seat, a rotating positioning column, a positioning column rotating drive and a positioning column lifting drive, the rotating positioning column is vertically arranged at the center of the retaining ring positioning seat, the positioning column rotating drive drives the rotating positioning column to rotate around its own axis, and the positioning column lifting drive drives the rotating positioning column to rise and fall in the vertical direction, the rotating positioning column is clearance-matched with the inner wall of the center hole on the retaining ring, a retaining ring positioning groove is provided on the retaining ring positioning seat, the retaining ring positioning groove is connected with the second material guide track, a retaining ring positioning protrusion is provided on the top of the retaining ring positioning groove, and the retaining ring positioning protrusion abuts against the circumferential protrusion of the retaining ring to realize the positioning of the retaining ring.

[0026] By such an arrangement, the retaining ring enters the retaining ring positioning seat from the end of the second material guide track along the retaining ring positioning groove. Before positioning, the positioning column lifting and lowering driving member drives the positioning column to descend, so that the retaining ring can pass over the positioning column until the center hole of the retaining ring is opposite to the positioning column. Then the positioning column lifting and lowering driving member drives the positioning column to rise, and the positioning column rotation driving member drives the positioning column to rotate, so that the positioning column and the center hole of the retaining ring are centrally positioned, and the positioning column drives the retaining ring to rotate when rotating until the protrusion of the retaining ring abuts against the retaining ring positioning protrusion, thereby realizing the circumferential positioning of the retaining ring.

[0027] Preferably, a top end of the rotation positioning column is provided with an arc guide surface, and an adjustment protrusion is provided on the arc guide surface.

[0028] With such an arrangement, since the power transmitted by the retaining ring to the retaining ring positioning seat mainly relies on vibration, during the production process, the rotating positioning column may rise prematurely due to the retaining ring not moving into place. In this case, the rotating positioning column may be partially inserted into the center hole of the retaining ring, and the retaining ring may be tilted on the rotating positioning column. By providing an adjustment protrusion, as the rotating positioning column rotates, the adjustment protrusion contacts the upper surface of the retaining ring, thereby pressing down the tilted upper side of the retaining ring and leveling the retaining ring, thereby facilitating automatic adjustment of the retaining ring and reducing the trouble of manual adjustment due to the inability of the retaining ring to automatically level.

[0029] Preferably, the unloading device includes a unloading chute, a third translation drive, a third lifting drive and a third tensioning and relaxing jaw, the third tensioning and relaxing jaw is closed to clamp the balance wheel seat or opened to place the balance wheel seat, the third lifting drive drives the third tensioning and relaxing jaw to rise and fall in the vertical direction, and the third translation drive drives the third lifting drive to move back and forth in the horizontal direction between the balance wheel seat positioning clamping device and the unloading chute.

[0030] Through such an arrangement, the unloading process of the balance wheel seat is opposite to the loading process of the balance wheel seat. Specifically, when the balance wheel seat is assembled, during unloading, the third translation drive member drives the third lifting drive member to move toward the balance wheel seat positioning and clamping device. After reaching the position, the third lifting drive member drives the third tensioning and relaxing jaw to descend, and the third tensioning and relaxing jaw clamps the balance wheel seat on the balance wheel seat positioning and clamping device. Then the third lifting drive member drives the third tensioning and relaxing jaw to rise, and the third translation drive member drives the third lifting drive member to move toward the unloading chute. After moving into position, the third tensioning and relaxing jaw opens, so that the balance wheel seat falls along the unloading chute, completing the unloading process and realizing the automation of unloading of the balance wheel seat, which is conducive to realizing automated production.

[0031] Preferably, the quantitative material taking assembly includes a conveying seat, a top plate, and a sliding baffle, the top plate is fixed to the conveying seat, the sliding baffle is slidably arranged relative to the conveying seat, a baffle driving member for pushing the sliding baffle to move back and forth is arranged on one side of the conveying seat, a plurality of feed grooves are horizontally opened on one side of the conveying seat, the opening direction of the feed grooves is perpendicular to the moving direction of the sliding baffle, the feed grooves are connected with the third material guide track, a plurality of discharge grooves are also arranged on the sliding baffle in the vertical direction, the driving air pipe is arranged above the top plate, and the air outlet end of the driving air pipe is arranged directly opposite to the discharge groove, the guiding air pipe is connected with the bottom of the discharge groove, and the sliding baffle A plurality of material picking chutes are opened on the top, the opening direction of the material picking chutes is parallel to the opening direction of the feeding trough and the bottom of the material picking chute is connected with the discharging trough, a material picking plate is slidably arranged in the material picking chute, and a material picking notch is arranged at one end of the material picking plate facing the feeding trough, the material picking notch abuts against the connection between the head of the fastening screw and the threaded part to realize material picking, and a feeding notch is arranged on the top plate just opposite to the feeding trough, and the quantitative material picking assembly also includes a material picking driving member for driving the material picking plate to move, the material picking driving member drives the material picking plate to approach the feeding trough to take the fastening screw, and when the material picking driving member drives the material picking plate away from the feeding trough, the fastening screw is dropped into the discharging trough.

[0032] With such an arrangement, when quantitative material is taken, the baffle driving member drives the sliding baffle to slide until the material taking chute is opposite to the feeding chute, and the material taking driving member drives the material taking plate to approach the feeding chute, and the material taking notch on the material taking plate is butted against the feeding chute, so that the fastening screw in the feeding chute can enter the material taking chute through the feeding notch, and then the baffle driving member drives the sliding baffle to slide, so that the material taking chute and the feeding chute are staggered, so as to take the fastening screws one by one, and the material taking driving member drives the material taking plate away from the feeding chute, so that the material taking plate drives the fastening screw to move, and after passing the feeding notch, the top plate abuts against the head of the fastening screw, so that the fastening screw is scraped into the material guiding air pipe, and then the air pipe is driven to output airflow, and the fastening screw is transported along the material guiding air pipe to the screw tightening device, so as to achieve the purpose of automatic quantitative material taking.

[0033] Preferably, the eccentric cam material taking assembly comprises a flip cylinder and an eccentric cam clamping cylinder, wherein the eccentric cam clamping cylinder is fixed on the rotating shaft of the flip cylinder, and the fixing direction of the eccentric cam clamping cylinder is perpendicular to the axis of the rotating shaft of the flip cylinder;

[0034] The eccentric cam clamping cylinder is a pneumatic clamping finger, a clamping sheet is fixed on the clamping finger of the pneumatic clamping finger, an arc-shaped clamping groove is opened on the clamping sheet, and the clamping groove is adapted to the side surface of the cylindrical part of the inclined eccentric cam.

[0035] With such an arrangement, the state of the inclined eccentric cam on the positioning guide groove is that the inclined end is at the bottom and the plug-in shaft is at the top. Therefore, the inclined eccentric cam needs to be flipped. First, the pneumatic clamping fingers are used to drive the clamping plates to approach each other, and the tilted eccentric cam is clamped by abutting the cylindrical part of the tilted eccentric cam with the clamping groove. Then, the pneumatic clamping fingers are driven by the flipping cylinder to flip the entire body. Finally, the pneumatic clamping fingers drive the clamping plates to loosen the clamping of the tilted eccentric cam, and the tilted eccentric cam is loaded onto the balance wheel seat on the balance wheel seat positioning clamping device, thereby realizing an automated tilted eccentric cam loading process.

[0036] Preferably, the eccentric cam positioning assembly also includes an auxiliary limit cylinder, which is arranged in a horizontal direction, and an auxiliary limit plate is arranged on the telescopic end of the auxiliary limit cylinder, and the telescopic direction of the auxiliary limit cylinder is perpendicular to the telescopic direction of the main limit cylinder, and the auxiliary limit cylinder drives the auxiliary limit plate to approach or move away from the inclined eccentric cam on the positioning seat.

[0037] With such an arrangement, the inclined eccentric cam moves along the second material guide track and then moves along the positioning guide groove. The main limiting cylinder drives the limiting block to move, so that the limiting portion of the limiting block abuts against the cylindrical portion of the inclined eccentric cam, thereby limiting the inclined eccentric cam. An auxiliary limiting cylinder is arranged, and the auxiliary limiting cylinder drives the auxiliary limiting plate to abut against the side of the inclined eccentric cam, thereby auxiliary limiting the inclined eccentric cam, thereby avoiding the possibility of the inclined eccentric cam detaching from the end of the positioning guide groove before taking materials.

[0038] Preferably, the eccentric cam positioning assembly further comprises an eccentric cam in-position detection sensor, which is fixed on the positioning seat and has a detection end disposed toward the cylindrical portion of the inclined eccentric cam on the positioning seat.

[0039] With such an arrangement, the detection end of the eccentric cam in position detection sensor outputs different detection signals according to whether there is a tilted eccentric cam on the positioning seat, so that the assembly process can be controlled according to the feedback signal; if the eccentric cam in position detection sensor does not detect the tilted eccentric cam, the assembly of the balance wheel seat can be temporarily stopped until the tilted eccentric cam is in position, and then the loading of the tilted eccentric cam and subsequent press-fitting can be continued, thereby ensuring the reliability of the press-fitting process and reducing the occurrence of missing tilted eccentric cam.

[0040] Preferably, the balance wheel seat positioning clamping device includes a fixture body and a clamping structure, the fixture body is provided with a positioning groove, the positioning groove includes a balance wheel positioning groove and a cylindrical positioning groove, the cylindrical positioning groove is adapted to the cylinder of the balance wheel seat, the balance wheel positioning groove is distributed along the circumference of the cylindrical positioning groove and is connected with the cylindrical positioning groove, the balance wheel positioning groove is adapted to the three balance wheels on the balance wheel seat, a supporting protrusion is also fixedly provided at the center of the fixture body, the supporting protrusion abuts against the lower surface of the bearing on the balance wheel seat, and the clamping structure clamps the balance wheel seat to the fixture body.

[0041] Through such an arrangement, the balance wheel seat is positioned by adapting the balance wheel positioning groove to the three balance wheel structures on the balance wheel seat, and the cylindrical positioning groove to the cylinder on the balance wheel seat, and the supporting protrusion abuts against the lower surface of the bearing on the balance wheel seat, thereby avoiding the bearing displacement or deformation or even damage when the inclined eccentric cam is pressed and installed, and then the balance wheel seat is fixed to the fixture body by the clamping structure, thereby realizing the positioning and clamping of the balance wheel seat.

[0042] Preferably, the clamping structure includes a clamping seat, a first clamping claw body, and a second clamping claw body, the first clamping claw body and the second clamping claw body are both hinged to the clamping seat, the first clamping claw body is provided with a driving protrusion, the second clamping claw body is provided with an abutting portion abutting with the driving protrusion, the first clamping claw body is provided with a driving block, and the clamping structure also includes a clamping tension spring for realizing clamping of the clamping structure, one end of the clamping tension spring is fixed to the first clamping claw body or the second clamping claw body, and the other end is fixed to the clamping seat.

[0043] Through such an arrangement, the clamping tension spring applies elastic force to the first clamping claw body, so that the normal state of the clamping structure is a clamping state, pushing the driving block, thereby moving the first clamping claw body, and the driving protrusion on the first clamping claw body abuts against the abutting portion on the second clamping claw body, thereby driving the second clamping claw body to move, and then causing the first clamping claw body and the second clamping claw body to rotate around their respective hinge axes and causing the clamping structure to tend to open, thereby achieving the purpose of releasing the clamping state of the clamping structure.

[0044] Preferably, the balance wheel seat positioning clamping device is arranged on a station conversion assembly, the station conversion assembly comprises a base, a station turntable and a rotary drive member, the station turntable is rotatably arranged on the base in a state where the axis is vertical, the rotary drive member drives the station turntable to rotate around its own axis, and the balance wheel seat positioning clamping device is arranged on the station turntable;

[0045] An abutment plate is fixedly arranged on the base, and the driving block abuts against the abutment plate. The abutment plate pushes the driving block to move away from the center of the base to realize the opening of the clamping structure.

[0046] Through such an arrangement, the balance wheel seat positioning clamping device is on the work station turntable, and the work station turntable is driven to move by rotating the driving member, thereby realizing the work station conversion of the balance wheel positioning member assembly, and as the work station turntable rotates, the driving block abuts against the abutment plate, and the abutment plate applies force to the driving block, thereby realizing the purpose of automatically opening the clamping structure, and as the work station turntable rotates, after the driving block and the abutment plate are disengaged from the abutment, the clamping structure realizes automatic clamping under the action of the clamping tension spring, and the structure is ingenious, and can realize the clamping or releasing action of the automatic clamping structure as the work station turntable rotates.

[0047] Preferably, a second through hole is provided on the work station turntable, and the second through hole is located directly below the fixture body. A lifting member and a lifting driving member for driving the lifting member to rise and fall in a vertical direction are provided on the base below the work station turntable. The lifting member can pass through the second through hole and abut against the bottom of the fixture body.

[0048] Through such an arrangement, when the inclined eccentric cam is press-fitted, the lifting drive member drives the lifting member to rise, and the lifting member can abut against the bottom of the fixture body to support the fixture body. When the press-fitting rod drives the universal press-fitting head to press the inclined eccentric cam, the lifting member can support the pressure on the fixture body, reduce the force on the workstation turntable, and reduce the possibility of deformation of the workstation turntable.

[0049] Based on the same inventive concept, the second object of the present invention is to provide an automatic assembly process of an eccentric cam and a retaining ring of a three-cam balance wheel seat, using the above-mentioned automatic assembly equipment of an eccentric cam and a retaining ring of a three-cam balance wheel seat, comprising the following steps:

[0050] S1: The balance wheel seat loading device loads the balance wheel seat to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the balance wheel seat;

[0051] S2: The retaining ring feeding device loads the retaining ring and conveys it to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the retaining ring;

[0052] S3: The screw feeding device feeds the screws and quantitatively delivers the fastening screws to the screw tightening device;

[0053] S4: The screw tightening device tightens the fastening screw on the balance wheel seat on the balance wheel seat positioning clamping device and fixes the retaining ring;

[0054] S5: The eccentric cam feeding device feeds the material, conveys the inclined eccentric cam to the balance wheel seat positioning clamping device, and positions the inclined eccentric cam to the inner ring of the bearing of the balance wheel seat on the balance wheel seat positioning clamping device;

[0055] S6: The eccentric cam press-fitting device presses the inclined eccentric cam into the inner ring of the bearing;

[0056] S7: The unloading device removes the balance wheel seat assembled with the inclined eccentric cam and the retaining ring from the balance wheel seat positioning clamping device for unloading.

[0057] Through such an arrangement, automatic loading of the balance wheel seat, retaining ring, fastening screws and inclined eccentric cam can be achieved, the balance wheel seat and retaining ring can be positioned and clamped by the balance wheel seat positioning and clamping device, the retaining ring can be automatically assembled by the screw tightening device, and the inclined eccentric cam can be automatically pressed by the eccentric cam pressing device, thereby realizing the automatic assembly process of the inclined eccentric cam and the retaining ring on the three-cam balance wheel seat as a whole, with a high degree of automation and high production efficiency.

[0058] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0059] 1. A device for automatically assembling an inclined eccentric cam and a retaining ring is proposed. The balance wheel seat, the retaining ring, the fastening screws and the inclined eccentric cam are respectively loaded onto the balance wheel seat positioning and clamping device through a balance wheel seat loading device, a retaining ring loading device, a screw loading device and an eccentric cam loading device. The balance wheel seat positioning and clamping device positions and clamps the balance wheel seat and the retaining ring. The mobile platform is driven down by the platform driving component, so that the electric screwdriver fixes the fastening screws on the balance wheel seat as the mobile platform descends, thereby completing the installation of the retaining ring. A universal pressing head is provided at the lower end of the pressing rod. The universal pressing head is adaptively fitted with the inclined upper surface of the inclined eccentric cam to be pressed, so that the inclined eccentric cam is evenly stressed, thereby improving the quality of the pressing. Finally, the material is unloaded through the unloading device, thereby realizing the automated production process of loading, pressing and unloading, improving production efficiency and reducing strength.

[0060] 2. The retaining ring is transferred from the end of the second material guide track to the positioning clamping device of the balance wheel seat through the retaining ring picking assembly to realize the automatic picking of the retaining ring.

[0061] 3. By setting the retaining ring positioning component to position the retaining ring, preparation is made for the subsequent automatic material collection and loading of the retaining ring. The accurate positioning of the retaining ring is conducive to the automation of the retaining ring loading.

[0062] 4. An adjustment protrusion is provided on the arc guide surface of the rotating positioning column, which is conducive to automatically adjusting the retaining ring and facilitating the positioning of the retaining ring.

[0063] 5. By setting a quantitative material taking component, it is possible to take a fixed amount of materials from the end of the third material guide track and feed the materials to the screw tightening device.

[0064] 6. The eccentric cam picking assembly includes a flipping cylinder and an eccentric cam clamping cylinder. After the tilted eccentric cam is positioned on the positioning guide groove, the flipping cylinder drives the pneumatic clamping finger to flip as a whole, thereby flipping the tilted eccentric cam and loading the tilted eccentric cam onto the balance wheel seat on the balance wheel seat positioning clamping device, thereby realizing the automated tilted eccentric cam loading process.

[0065] 7. The main limit cylinder cooperates with the auxiliary limit cylinder to limit the inclined eccentric cam located on the positioning guide groove, and the inclined eccentric cam is limited reliably.

[0066] 8. Set up the eccentric cam in place detection sensor to improve the reliability of the inclined eccentric cam press installation and reduce the occurrence of the inclined eccentric cam missing due to the inadequate loading of the inclined eccentric cam.

[0067] 9. The clamping structure is configured to include a clamping seat, a first clamping claw body and a second clamping claw body. A driving block, a driving protrusion and a clamping spring are arranged on the first clamping claw body, and an abutment portion is arranged on the second clamping claw body, so as to facilitate the linkage clamping or linkage releasing of the first clamping claw body and the second clamping claw body.

[0068] 10. The balance wheel seat positioning clamping device is arranged on a station conversion assembly to facilitate the station conversion of the balance wheel seat positioning clamping device, and an abutment plate is arranged to realize automatic clamping or automatic release of the clamping structure for station conversion.

[0069] 11. By setting the lifting parts, the fixture body is supported to reduce the force on the work station turntable during the press-fitting process and reduce the possibility of deformation of the work station turntable.

[0070] 12. A process for automatically assembling the inclined eccentric cam and the retaining ring is proposed, which has a high degree of automation, low production labor intensity and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is a schematic diagram of the overall structure of the eccentric cam and retaining ring automatic assembly equipment of the three-cam balance wheel seat in the first embodiment of the present invention from a first viewing angle;

[0072] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0073] Figure 3 yes Figure 1 Enlarged view of middle part B;

[0074] Figure 4 It is a schematic diagram of the overall structure of the automatic assembly equipment of the eccentric cam and the retaining ring of the three-cam balance wheel seat in the first embodiment of the present invention from a second viewing angle;

[0075] Figure 5 yes Figure 4 Enlarged view of the middle C part;

[0076] Figure 6 yes Figure 5 Enlarged view of the middle D part;

[0077] Figure 7 It is a schematic diagram showing the uneven positioning of the retaining ring;

[0078] Figure 8 yes Figure 4 Enlarged view of the middle E part;

[0079] Fig. 9 A front view of an automatic assembly device for the eccentric cam and retaining ring of a three-cam balance wheel seat in the first embodiment of the present invention;

[0080] Fig.10 1 is a schematic diagram of the structure of a three-cam balance wheel seat in one embodiment of the present invention;

[0081] Fig.11 is a side view of a three-cam balance wheel seat in one embodiment of the present invention;

[0082] Fig.12 is an exploded schematic diagram of a three-cam balance wheel seat in one embodiment of the present invention;

[0083] Fig.13 It is a schematic diagram of the overall structure of a quantitative delivery assembly in one embodiment of the present invention;

[0084] Fig.14 It is a schematic diagram of the structure explosion of a quantitative delivery component in one embodiment of the present invention;

[0085] Fig.15 It is a structural schematic diagram of a universal transmission shaft and a screw chuck in one embodiment of the present invention;

[0086] Fig.16 is a half-section schematic diagram of a universal transmission shaft and a screw chuck in one embodiment of the present invention;

[0087] Fig.17 is a structural schematic diagram of an eccentric cam positioning assembly in one embodiment of the present invention;

[0088] Fig.18is a schematic structural diagram of a clamp body in one embodiment of the present invention;

[0089] Fig.19 is a top view of a clamp body in one embodiment of the present invention;

[0090] Fig. 20 yes Fig.19 Sectional view of the AA plane;

[0091] Fig.21 It is a structural schematic diagram of a clamping structure in one embodiment of the present invention.

[0092] The technical features indicated by the reference numerals are as follows:

[0093] 1. Balance wheel seat feeding device; 101. Balance wheel seat vibration plate; 1011. First material guide track; 102. Balance wheel seat material taking assembly; 1021. First translation drive member; 1022. First lifting drive member; 1023. First tensioning and relaxing clamping claw; 1024. First guide rail slider assembly; 10241. First guide rail; 102411. First supporting column; 10242. First slider; 2. Balance wheel seat positioning clamping device; 201. Clamp body; 2011. Positioning groove; 20111. Balance wheel positioning groove; 20112. Cylindrical positioning groove; 2012. Supporting protrusion; 20121. Second slide groove segment; 20122. First limit step; 202. Clamping structure; 2021. Clamping seat; 2022 , the first clamping claw body; 20221, the first end; 202211, the driving protrusion; 202212, the driving block; 20222, the second end; 202221, the positioning clamping groove; 2023, the second clamping claw body; 20231, the abutment portion; 203, the auxiliary positioning member; 2031, the second limiting step portion; 3, the retaining ring feeding device; 301, the retaining ring vibration plate; 3011, the second material guide track; 302, the retaining ring material taking assembly; 3021, the second translation drive member; 3022, the second lifting drive member; 3023, the second tensioning and relaxing clamping claw; 3024, the second guide rail slider assembly; 30241, the second guide rail; 302411, the second supporting column; 30242, the second slider; 3025, Retaining ring positioning assembly; 30251, retaining ring positioning seat; 302511, vertical mounting plate; 302512, retaining ring positioning groove; 302513, retaining ring positioning protrusion; 30252, rotating positioning column; 302521, arc guide surface; 302522, adjusting protrusion; 30253, positioning column rotating drive member; 302531, slide seat; 30254, positioning column lifting drive member; 302541, fixed bottom plate; 3026, third guide rail slider assembly; 30261, third slide rail; 30262, third slider; 4, screw feeding device; 401, screw vibration plate; 4011, third material guide track; 402, quantitative conveying assembly; 4021, quantitative material taking assembly; 40211, conveying seat ; 402111, baffle slide; 402112, feed chute; 40212, top plate; 402121, feed notch; 402122, moving track groove; 4021221, platform; 4021222, inclined wing; 40213, sliding baffle; 402131, feed chute; 402132, material collection chute; 40214, baffle drive; 40215, fixed plate; 40216, material collection plate; 402161, material collection notch; 402162, moving guide column; 4022, driving air pipe; 5, screw tightening device; 501, support frame; 5011, guide column; 5012, horizontal mounting plate; 502, mobile platform; 5021, guide sleeve; 503, platform drive assembly;5031, platform drive cylinder; 504, electric screwdriver; 5041, universal transmission shaft; 5042, screw rod; 505, screw positioning assembly; 5051, fixed sleeve; 5052, screw chuck; 50521, chuck seat; 505211, nail feeding interface; 50522, screw clamp; 505221, receiving groove; 505222, nail passage; 6, eccentric cam feeding device; 601, eccentric cam vibration plate; 6011, fourth guide rail; 602, eccentric cam material taking assembly; 6021, flip cylinder; 6022, eccentric cam clamping cylinder; 6022 1. Clamping piece; 602211. Clamping groove; 603. Eccentric cam positioning assembly; 6031. Positioning seat; 60311. Positioning guide groove; 60312. Sliding guide groove; 6032. Main limit cylinder; 60321. Limit block; 6033. Auxiliary limit cylinder; 60331. Auxiliary limit plate; 6034. Eccentric cam in-place detection sensor; 7. Eccentric cam press-fitting device; 701. Press-fitting rod; 702. Universal press-fitting head; 7021. Universal ball head; 7022. Press block; 7023. Connecting block; 7024. First threaded connector; 703. Press-fitting drive; 8. Unloading Device; 801, unloading slide; 802, third translation drive; 803, third lifting drive; 804, third tensioning and relaxing clamp; 805, fourth guide rail slider assembly; 8051, fourth guide rail; 80511, third supporting column; 8052, fourth slider; 9, three-cam balance wheel seat; 901, balance wheel seat; 9011, balance wheel; 902, bearing; 903, retaining ring; 9031, center hole; 9032, protrusion; 9033, screw connection through hole; 904, fastening screw; 9041, head; 9042, threaded portion; 9043, connecting shoulder; 905, inclined eccentric cam ;9051, plug-in shaft;9052, inclined end;10, bracket;11, first body;12, second body;1201, first slide slot segment;13, third body;14, fourth body;15, second threaded connector;16, slide slot;17, station conversion assembly;1701, base;17011, abutment plate;170111, first wing;170112, second wing;1702, station turntable;17021, guide column;170211, guide sleeve;1703, rotary drive;18, working platform;19, lifting member;20, lifting drive. ; DETAILED DESCRIPTION

[0094] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments, but the scope of protection claimed in the present invention is not limited to the following specific embodiments.

[0095] Embodiment 1

[0096] refer to Figure 1 , Figure 2 as well as Figure 3 The present embodiment discloses an automatic assembly device for an eccentric cam and a retaining ring of a three-cam balance wheel seat, including a balance wheel seat feeding device 1, a balance wheel seat positioning and clamping device 2, a retaining ring feeding device 3, a screw feeding device 4, a screw tightening device 5, an eccentric cam feeding device 6, an eccentric cam pressing device 7 and a feeding device 8. The balance wheel seat feeding device 1 feeds the balance wheel seat 901 onto the balance wheel seat positioning and clamping device 2. The balance wheel seat positioning and clamping device 2 is used to position and clamp the balance wheel seat 901. The retaining ring feeding device 3 and the screw feeding device 4 respectively feed the retaining ring 903 and the fastening screw 904 onto the balance wheel seat. The eccentric cam 905 is fed to the balance wheel seat 901 that has been positioned and clamped on the balance wheel seat positioning and clamping device 2, the eccentric cam feeding device 6 feeds the inclined eccentric cam 905 to the balance wheel seat 901 that has been positioned and clamped on the balance wheel seat positioning and clamping device 2, the screw tightening device 5 is used to fasten the fastening screws 904 on the balance wheel seat 901 and fix the retaining ring 903, the eccentric cam pressing device 7 is used to press the inclined eccentric cam 905 on the balance wheel seat 901, and the unloading device 8 removes the balance wheel seat 901 after the retaining ring 903 is assembled and the inclined eccentric cam 905 is pressed from the balance wheel seat positioning and clamping device 2.

[0097] refer to Fig.10 , Fig.11 as well as Fig.12 The assembled three-cam balance wheel seat 9 includes a balance wheel seat 901, a bearing 902, a retaining ring 903, a fastening screw 904 and an inclined eccentric cam 905. The balance wheel seat 901 is cylindrical, and three balance wheels 9011 are arranged at the bottom of the balance wheel seat 901 along the circumference of the balance wheel seat 901. The bearing 902 is pressed into the center of the balance wheel seat 901, and the axis of the bearing 902 coincides with the axis of the balance wheel seat 901. The inclined eccentric cam 905 is installed on the inner ring of the bearing 902. A center hole 9031 is provided in the center of the retaining ring 903. A plurality of protrusions 9032 are provided in the circumference of the retaining ring 903. Screw connection through holes 9033 for fastening screws are provided on the protrusions 9032. The eccentric cam and retaining ring automatic assembly equipment of the three-cam balance wheel seat of this embodiment is used to press the inclined eccentric cam 905 into the inner ring of the bearing 902 and assemble the retaining ring 903 onto the balance wheel seat through the fastening screw 904.

[0098] refer to Fig.11 as well as Fig.12 The inclined eccentric cam 905 includes an insert shaft portion 9051 inserted into the inner ring of the bearing 902 and an inclined end portion 9052 located at the upper end of the insert shaft portion 9051.

[0099] refer to Figure 1 , Figure 4 as well as Figure 5The balance wheel seat feeding device 1 includes a balance wheel seat vibration plate 101 and a balance wheel seat picking assembly 102. A first material guide track 1011 is provided at the upper end of the balance wheel seat vibration plate 101. The balance wheel seat vibration plate 101 transports the balance wheel seat 901 one by one along the first material guide track 1011 in a vibrating manner until the balance wheel seat 901 is transported to the end of the first material guide track 1011. The balance wheel seat picking assembly 102 moves the balance wheel seat 901 from the end of the first material guide track 1011 to the balance wheel seat positioning clamping device 2;

[0100] refer to Figure 4 The balance wheel seat picking assembly 102 includes a first translation drive member 1021, a first lifting drive member 1022 and a first tensioning and relaxing jaw 1023. The first tensioning and relaxing jaw 1023 is closed to clamp the balance wheel seat 901 or opened to place the balance wheel seat 901. The first lifting drive member 1022 drives the first tensioning and relaxing jaw 1023 to rise and fall in the vertical direction. The first translation drive member 1021 drives the first lifting drive member 1022 to move back and forth in the horizontal direction between the end of the first material guide rail 1011 and the balance wheel seat positioning clamping device 2.

[0101] In this embodiment, the first translation drive member 1021 and the first lifting drive member 1022 are both telescopic cylinders, and the first tensioning and relaxing clamp 1023 is a pneumatic clamp finger. Each clamping jaw of the first tensioning and relaxing clamp 1023 is connected to a clamping block (not marked in the figure), and the clamping block (not marked in the figure) is abutted against the outer cylindrical surface of the balance wheel seat 901 to clamp the balance wheel seat 901.

[0102] In order to move the balance wheel seat 901 more smoothly, a first guide rail slider assembly 1024 is set corresponding to the first translation drive member 1021. The first guide rail slider assembly 1024 includes a first guide rail 10241 and a first slider 10242. The first guide rail 10241 is fixed on the first supporting column 102411, and the first guide rail 10241 is horizontally arranged along the driving direction of the first translation drive member 1021. The first slider 10242 is slidably connected to the first guide rail 10241. The first lifting drive member 1022 is fixed on the first slider 10242 and moves with the movement of the first slider 10242.

[0103] refer to Figure 2 , Figure 3 , Fig.18 , Fig.19 , Fig. 20 as well as Fig.21The balance wheel seat positioning clamping device 2 includes a clamp body 201 and a clamping structure 202. A positioning groove 2011 is opened on the clamp body 201. The positioning groove 2011 includes a balance wheel positioning groove 20111 and a cylindrical positioning groove 20112. The cylindrical positioning groove 20112 is adapted to the cylinder of the balance wheel seat 901. The balance wheel positioning groove 20111 is distributed along the circumference of the cylindrical positioning groove 20112 and is connected with the cylindrical positioning groove 20112. The balance wheel positioning groove 20111 is adapted to the three balance wheels 9011 on the balance wheel seat 901. A supporting protrusion 2012 is also fixedly provided at the center of the clamp body 201. The supporting protrusion 2012 abuts against the lower surface of the bearing 902 on the balance wheel seat 901. The clamping structure 202 clamps the balance wheel seat 901 to the clamp body 201.

[0104] refer to Fig.18 , Fig.19 as well as Fig. 20 The balance wheel seat positioning clamping device 2 also includes an auxiliary positioning member 203, which is movably arranged in the vertical direction at the center of the clamp body 201. A through groove (not marked in the figure) for the auxiliary positioning member 203 to pass through is opened in the center of the supporting protrusion 2012. A first reset elastic member (not shown in the figure) is arranged on the clamp body 201 to drive the auxiliary positioning member 203 to move upward. The auxiliary positioning member 203 is clearance-matched with the inner ring of the bearing on the balance wheel seat. After the balance wheel seat is positioned in the positioning groove 2011, the top surface of the auxiliary positioning member 203 maintains a distance from the upper surface of the inner ring of the bearing on the balance wheel seat, and the distance can be 1 to 3 mm.

[0105] The auxiliary positioning member 203 cooperates with the inner ring of the bearing on the balance wheel seat, thereby playing an auxiliary positioning role, making the positioning of the balance wheel seat more accurate, and the auxiliary positioning member 203 is movably arranged in the center of the fixture body 201 along the vertical movement, and the top surface of the auxiliary positioning member 203 maintains a distance from the upper surface of the inner ring of the bearing 902 on the balance wheel seat 901. When the inclined eccentric cam 905 is placed into the inner ring of the bearing 902, the inclined eccentric cam 905 can be pre-positioned through the distance. After the inclined eccentric cam 905 is press-fitted, the first reset elastic member applies an elastic force to the auxiliary positioning member 203, and the auxiliary positioning member 203 abuts against the bottom of the inclined eccentric cam 905 in the bearing 902, thereby separating the press-fitted balance wheel seat 901 from the balance wheel seat positioning clamping device 2, and facilitating the unloading of the press-fitted balance wheel seat 901.

[0106] refer to Fig.18 , Fig.19 as well as Fig. 20The clamp body 201 includes a first body 11, a second body 12, a third body 13 and a fourth body 14 which are arranged in sequence from bottom to top. The first body 11, the second body 12, the third body 13 and the fourth body 14 are connected by a second threaded connector 15. The second threaded connector 15 adopts a countersunk screw. The supporting protrusion 2012 is fixed to the third body 13. A first slide groove segment 1201 is provided on the second body 12. A second slide groove segment 20121 which is connected to the first slide groove segment 1201 is provided on the supporting protrusion 2012. The first slide groove segment 1201 is connected to the second slide groove segment 20121 to form a slide groove 16 for the auxiliary positioning member 203 to slide. A first reset elastic member is arranged in the slide groove 16. One end of the first reset elastic member abuts against the bottom of the slide groove 16, and the other end abuts against the auxiliary positioning member 203. The first reset elastic member applies an elastic force to the auxiliary positioning member 203 pointing to the outside of the slide groove 16.

[0107] refer to Fig. 20 The supporting protrusion 2012 is located in the first slide groove segment 1201 and is provided with a first limiting step portion 20122 , and the auxiliary positioning member 203 is provided with a second limiting step portion 2031 abutting against the first limiting step portion 20122 .

[0108] The first body 11, the second body 12, the third body 13 and the fourth body 14 are connected by the second threaded connection 15, which is convenient for processing, assembly and disassembly for maintenance. The auxiliary positioning member 203 slides along the slide groove 16 formed by the second body 12 and the supporting protrusion 2012, and the second limiting step portion 2031 abuts against the first limiting step portion 20122, thereby limiting the auxiliary positioning member 203 from detaching from the slide groove 16.

[0109] refer to Fig.21The clamping structure 202 includes a clamping seat 2021, a first clamping claw body 2022, and a second clamping claw body 2023. The first clamping claw body 2022 and the second clamping claw body 2023 are both hinged on the clamping seat 2021. The first clamping claw body 2022 and the second clamping claw body 2023 each include a first end 20221 and a second end 20222. The first end 20221 and the second end 20222 are respectively located on both sides of the hinged position. The second end 20222 is also provided with a positioning clamping groove 202221, which is connected to the retaining ring 903. The protrusion 9032 is adapted to the retaining ring 903, so that the second end 20222 abuts against the outer side of the balance wheel seat 901 to clamp the balance wheel seat 901. The first clamping claw body 2022 is provided with a driving protrusion 202211, and the second clamping claw body 2023 is provided with an abutting portion 20231 abutting against the driving protrusion 202211. The driving protrusion 202211 is located on the side where the first end 20221 of the first clamping claw body 2022 is located, and the abutting portion 20231 is located on the side where the first end 20221 of the second clamping claw body 2023 is located.

[0110] A driving block 202212 is provided on the first clamping claw body 2022, and the driving block 202212 is located on the side where the first end 20221 of the first clamping claw body 2022 is located. The clamping structure 202 also includes a clamping tension spring (not shown in the figure), one end of the clamping tension spring is fixed to the first clamping claw body 2022 or the second clamping claw body 2023, and the other end is fixed to the clamping seat 2021. In this embodiment, one end of the clamping tension spring is fixed to the first end 20221 of the second clamping claw body 2023, and the other end is fixed to the clamping seat 2021. The clamping tension spring applies a pulling force to the second clamping claw body 2023, so that the second end 20222 of the first clamping claw body 2022 and the second end 20222 of the second clamping claw body 2023 are close to each other, thereby realizing the clamping of the clamping structure 202 under normal conditions.

[0111] refer to Figure 4 , Figure 5 as well as Figure 6 The retaining ring feeding device 3 includes a retaining ring vibrating plate 301 and a retaining ring taking component 302. The upper end of the retaining ring vibrating plate 301 is provided with a second material guide track 3011. The retaining ring taking component 302 moves the retaining ring 903 from the end of the second material guide track 3011 to the balance wheel seat 901 on the balance wheel seat positioning clamping device 2 and positions the retaining ring 903.

[0112] refer to Figure 5The retaining ring picking assembly 302 includes a second translation drive member 3021, a second lifting drive member 3022 and a second tensioning and relaxing jaw 3023. The second tensioning and relaxing jaw 3023 is opened to abut against the inner wall of the center hole 9031 on the retaining ring 903 to clamp the retaining ring 903. When the second tensioning and relaxing jaw 3023 contracts, the second tensioning and relaxing jaw 3023 is out of contact with the inner wall of the center hole 9031 on the retaining ring 903, thereby releasing the clamping of the retaining ring 903 and placing the retaining ring 903. The second lifting drive member 3022 drives the second tensioning and relaxing jaw 3023 to rise and fall in the vertical direction. The second translation drive member 3021 drives the second lifting drive member 3022 to move back and forth in the horizontal direction between the end of the second material guide track 3011 and the balance wheel seat positioning clamping device 2.

[0113] In this embodiment, the second translation drive member 3021 and the second lifting drive member 3022 are both telescopic cylinders, and the second tensioning and relaxing clamp 3023 is a three-finger pneumatic clamp. Each clamping jaw of the second tensioning and relaxing clamp 3023 is connected to a clamping block (not marked in the figure), and the retaining ring 903 is clamped by the outer side of the clamping block (not marked in the figure) abutting against the inner wall of the center hole 9031 of the retaining ring 903.

[0114] In order to move the retaining ring 903 more smoothly, a second guide rail slider assembly 3024 is set corresponding to the second translation drive member 3021. The second guide rail slider assembly 3024 includes a second guide rail 30241 and a second slider 30242. The second guide rail 30241 is fixed on the second supporting column 302411, and the second guide rail 30241 is horizontally arranged along the driving direction of the second translation drive member 3021. The second slider 30242 is slidably connected to the second guide rail 30241. The second lifting drive member 3022 is fixed on the second slider 30242 and moves with the movement of the second slider 30242.

[0115] refer to Figure 5 as well as Figure 6 The retaining ring material taking assembly 302 also includes a retaining ring positioning assembly 3025, and the retaining ring positioning assembly 3025 includes a retaining ring positioning seat 30251, a rotating positioning column 30252, a positioning column rotating driving member 30253 and a positioning column lifting driving member 30254. The rotating positioning column 30252 is arranged at the center of the retaining ring positioning seat 30251 along the vertical direction. The center of the retaining ring positioning seat 30251 is provided with a positioning through hole (not shown in the figure) for the rotating positioning column 30252 to pass through. The positioning column rotating driving member 30253 drives the rotating positioning column 30252 to rotate around its own axis, and the positioning column lifting driving member 30254 drives the rotating positioning column 30252 to rise and fall in the vertical direction.

[0116] In this embodiment, the positioning seat is fixed on the vertical mounting plate 302511, the positioning column rotation drive component 30253 is arranged on a slide seat 302531, and the positioning column lifting drive component 30254 is arranged on a fixed base plate 302541. The fixed base plate 302541 is fixed to the vertical mounting plate 302511, and a third guide rail slider assembly 3026 is arranged on the vertical mounting plate 302511. The third guide rail slider assembly 3026 includes a third slide rail 30261 and a third slider 30262. The third slide rail 30261 is vertically fixed on the vertical mounting plate 302511, and the third slider 30262 is slidably connected to the third slide rail 30261. The third slider 30262 is fixedly connected to one side of the slide seat 302531.

[0117] The rotating positioning column 30252 is matched with the inner wall clearance of the center hole 9031 on the retaining ring 903, and a retaining ring positioning groove 302512 is provided on the retaining ring positioning seat 30251, and the retaining ring positioning groove 302512 is connected with the second material guide track 3011, so that the retaining ring 903 at the end of the second material guide track 3011 can enter the retaining ring positioning groove 302512, and a retaining ring positioning protrusion 302513 is provided on the top of the retaining ring positioning groove 302512.

[0118] refer to Figure 6 as well as Figure 7 A circular arc guide surface 302521 is provided at the top of the rotation positioning column 30252, and an adjustment protrusion 302522 is provided on the circular arc guide surface 302521. The setting of the circular arc guide surface 302521 facilitates the rotation positioning column 30252 to be inserted into the center hole 9031 of the retaining ring 903.

[0119] When positioning the retaining ring 903, first, the positioning column lifting and lowering driving member 30254 drives the positioning column to descend, so that the retaining ring 903 can pass over the positioning column and enter the retaining ring positioning groove 302512 through the second material guide track 3011 until the center hole 9031 of the retaining ring 903 is aligned with the positioning column, and then the positioning column lifting and lowering driving member 30254 drives the positioning column to rise, and the positioning column rotation driving member 30253 drives the positioning column to rotate, so that the positioning column and the center hole 9031 of the retaining ring 903 are centrally positioned, and the positioning column rotates to drive the retaining ring 903 to rotate until the protrusion 9032 of the retaining ring 903 abuts against the retaining ring positioning protrusion 302513, thereby realizing the positioning of the retaining ring 903;

[0120] refer to Figure 7When the rotation positioning column 30252 rises prematurely due to the failure of the retaining ring 903 to move into place, the rotation positioning column 30252 may be partially inserted into the center hole 9031 of the retaining ring 903, and the retaining ring 903 may be tilted on the rotation positioning column 30252. The adjustment protrusion 302522 on the rotation positioning column 30252 rotates with the rotation of the rotation positioning column 30252, and the adjustment protrusion 302522 contacts the upper surface of the retaining ring 903, thereby pressing down the inclined upper side of the retaining ring 903 and adjusting the retaining ring 903 to be flat, thereby realizing automatic adjustment of the retaining ring 903 and reducing the trouble of manual adjustment.

[0121] refer to Figure 1 , Fig.13 as well as Fig.14 The screw feeding device 4 includes a screw vibration disk 401 and a quantitative conveying component 402. The upper end of the screw vibration disk 401 is connected to a plurality of third material guide rails 4011. The quantitative conveying component 402 includes a quantitative material taking component 4021, a plurality of driving air pipes 4022 and a plurality of material guide air pipes (not shown in the figure). One end of the material guide air pipe is connected to the quantitative material taking component 4021, and the other end is connected to the screw tightening device 5. The quantitative material taking component 4021 takes a fixed number of fastening screws 904 from the end of the third material guide rail 4011 into the material guide air pipe. The driving air pipe 4022 is connected to a high-pressure pump (not shown in the figure) and can output a high-pressure airflow, thereby providing a feeding airflow to the material guide air pipe through the driving air pipe 4022 to convey the fastening screws 904 to the screw tightening device 5.

[0122] refer to Fig.13 as well as Fig.14 The quantitative material taking component 4021 includes a conveying seat 40211, a top plate 40212, and a sliding baffle 40213. The top plate 40212 is fixed to the conveying seat 40211, and the sliding baffle 40213 is slidably arranged relative to the conveying seat 40211. The conveying seat 40211 is provided with a baffle slide groove 402111 for the sliding baffle 40213 to slide. A baffle driving component 40214 for pushing the sliding baffle 40213 to move back and forth is provided on one side of the conveying seat 40211. In this embodiment, the baffle driving component 40214 is a baffle driving cylinder, one end of which is fixed to the conveying seat 40211, and the other end is fixed to the sliding baffle 40213.

[0123] refer to Fig.13 as well as Fig.14A plurality of feed troughs 402112 are horizontally opened on one side of the conveying seat 40211, and the opening direction of the feed troughs 402112 is perpendicular to the moving direction of the sliding baffle 40213. The feed troughs 402112 are connected to the third material guide track 4011, and a plurality of discharge troughs 402131 are also arranged on the sliding baffle 40213 in the vertical direction. The driving air pipe 4022 is arranged above the top plate 40212. To facilitate the installation of the driving air pipe 4022, in this embodiment, a fixing plate 40215 is also fixedly connected to the top plate 40212.

[0124] The air outlet end of the driving air pipe 4022 is arranged for the material discharge chute 402131, the material guide air pipe is connected with the bottom of the material discharge chute 402131, a plurality of material taking chutes 402132 are arranged on the sliding baffle 40213, the opening direction of the material taking chutes 402132 is parallel to the opening direction of the material feeding chute 402112, the bottom of the material taking chutes 402132 is connected with the material discharge chute 402131, a material taking plate 40216 is slidably arranged in the material taking chute 402132, and the material taking plate 40216 faces the material feeding chute 4021 A material collection notch 402161 is provided at one end of 12, and the fastening screw 904 includes a head 9041 and a threaded portion 9042, and a connecting shoulder 9043 is formed between the head 9041 and the threaded portion 9042. The material collection notch 402161 abuts against the connecting shoulder 9043 of the fastening screw 904 to achieve material collection, and a feed notch 402121 is provided on the top plate 40212 opposite to the feed trough 402112, and the fastening screw 904 in the feed trough 402112 can enter the feed notch 402121.

[0125] The quantitative material picking component 4021 also includes a material picking drive (not marked in the figure) that drives the material picking plate 40216 to move. The material picking drive drives the material picking plate 40216 to approach the feed trough 402112 to take the fastening screw 904. When the material picking drive drives the material picking plate 40216 away from the feed trough 402112, the fastening screw 904 is dropped into the discharge trough 402131.

[0126] In this embodiment, reference Fig.13 as well as Fig.14The material taking driving member includes a moving guide post 402162 vertically arranged on the material taking plate 40216, a moving track groove 402122 is arranged on the top plate 40212, the moving guide post 402162 slides in the moving track groove 402122, the moving track groove 402122 includes a platform portion 4021221 and inclined wing portions 4021222 symmetrically arranged on both sides of the platform portion 4021221 and connected to the platform portion 4021221, the symmetry center line of the moving track groove 402122 coincides with the opening direction of the feeding trough 402112, the platform portion 4021221 and the sliding portion 4021222 are connected to the sliding portion 4021221, and the symmetry center line of the moving track groove 402122 coincides with the opening direction of the feeding trough 402112. The moving direction of the movable baffle 40213 is parallel, and the inclined wing 4021222 extends in the direction away from the feed trough 402112, so that the baffle driving member 40214 drives the sliding baffle 40213 to move, and makes the moving guide column 402162 move from the platform part 4021221 to the inclined wing 4021222 in the moving track groove 402122. During this process, the picking plate 40216 gradually moves in the direction away from the feed trough 402112, thereby moving the picked-up fastening screw 904 in the direction of the lower trough 402131, and placing the fastening screw 904 in the feed guide air pipe.

[0127] When taking materials, the baffle driving member 40214 drives the sliding baffle 40213 to slide, and the moving guide pillar 402162 slides in the moving track groove 402122, and moves from the inclined wing portion 4021222 to the platform portion 4021221, so that the material taking plate 40216 slides in the material taking chute 402132 until the material taking chute 402132 is aligned with the feeding chute 402112, that is, the material taking notch 402161 on the material taking plate 40216 is docked with the feeding chute 402112, so that the fastening screw 904 in the feeding chute 402112 can enter the material taking chute through the material taking notch 402161; then the baffle driving member 40214 drives the sliding baffle 40213 to slide, so that the material taking chute 402132 is moved to the feeding chute 402112. 2132 is staggered with the feed trough 402112, the movable guide column 402162 slides in the moving track groove 402122, and moves from the platform part 4021221 to the inclined wing part 4021222, and the picking plate 40216 slides in the picking chute 402132 and gradually moves away from the feed trough 402112, thereby moving the picked-up fastening screw 904 in the direction of the lower trough 402131, and after passing through the picking notch 402161, the top plate 40212 abuts against the head 9041 of the fastening screw 904, thereby scraping the fastening screw 904 into the material guiding air pipe, and then driving the air pipe 4022 to output high-pressure airflow, and transporting the fastening screw 904 to the screw tightening device 5, thereby realizing automatic fixed quantity picking.

[0128] In this embodiment, four material picking plates 40216 are provided, three driving air pipes 4022 are provided, and three material guiding air pipes are provided accordingly. One of the material picking plates 40216 is not provided with a material picking notch 402161, so that the baffle driving cylinder contracts. When driving the sliding baffle 40213 to slide, a fastening screw 904 can be taken out and lowered into the corresponding material guiding air pipe, and the baffle driving cylinder extends. When driving the sliding baffle 40213 to slide, two fastening screws 904 can be taken out and lowered into the corresponding material guiding air pipe, so that the baffle driving cylinder can be extended and retracted once, and three fastening screws 904 can be taken out.

[0129] In other embodiments, the material picking drive component can also be set as a material picking drive cylinder, one end of which is fixed to the sliding baffle 40213, and the other end is fixed to the material picking plate 40216. The material picking plate 40216 is driven close to or away from the material picking trough by the extension and retraction of the material picking drive cylinder.

[0130] refer to Figure 1 as well as Figure 2 The screw tightening device 5 includes a support frame 501, a mobile platform 502, a platform driving component 503, a plurality of electric screwdrivers 504 and a screw positioning component 505. The mobile platform 502 is slidably connected to the support frame 501, and the platform driving component 503 drives the mobile platform 502 to rise and fall vertically along the support frame 501.

[0131] In this embodiment, the platform driving assembly 503 includes a platform driving cylinder 5031, which is fixed to the support frame 501 in the vertical direction. The telescopic end of the platform driving cylinder 5031 is fixed to the mobile platform 502. A plurality of guide sleeves 5021 are fixed to one side of the mobile platform 502. A plurality of guide columns 5011 are arranged on the support frame 501 in the vertical direction. The guide sleeves 5021 are slidably connected to the guide columns 5011.

[0132] refer to Figure 1 as well as Figure 2 A plurality of electric screwdrivers 504 are arranged on the mobile platform 502, and a screw positioning assembly 505 is fixed to the support frame 501 and arranged below the electric screwdriver 504. The screw positioning assembly 505 positions the fastening screws 904 transported by the material guide air pipe, and the electric screwdriver 504 fixes the fastening screws 904 on the balance wheel seat 901 as the mobile platform 502 descends.

[0133] refer to Figure 1 , Figure 2 , Fig.15 as well as Fig.16, each electric screwdriver 504 is connected to a universal transmission shaft 5041, the lower end of the universal transmission shaft 5041 is connected to a screw rod 5042, a horizontal mounting plate 5012 is fixed on the support frame 501, the screw positioning assembly 505 includes a plurality of fixed sleeves 5051, and the plurality of fixed sleeves 5051 are fixed on the horizontal mounting plate 5012 along the vertical direction. The interior of the fixed sleeve 5051 is hollow and has openings at both ends. The screw rod 5042 is rotatably and slidably arranged in the fixed sleeve 5051, and the screw positioning assembly 505 also includes a fixed sleeve 5051 arranged at the lower end The screw chuck 5052 comprises a chuck seat 50521 and at least two screw jaws 50522. The screw jaws 50522 are all hinged on the chuck seat 50521. The screw jaws 50522 are provided with accommodating grooves 505221 on the opposite sides of the screw jaws 50522. All the accommodating grooves 505221 are constructed to form a nail passage 505222 for the fastening screws 904 to pass through. A nail feed interface 505211 is provided on one side of the chuck seat 50521. The material guide air pipe transports the fastening screws 904 from the nail feed interface 505211 to the screw chuck 5052.

[0134] Preferably, a torsion spring (not shown in the figure) may be provided on the chuck seat 50521, one end of the torsion spring is fixed to the chuck seat 50521, and the other end is fixed to the screw clamp 50522. The torsion spring drives the screw clamp 50522 to have a tendency to move toward each other. By providing the torsion spring, the clamps are normally close to each other, so that the fastening screw 904 cannot fall directly after entering the accommodating groove 505221. When the mobile platform 502 drives the universal joint transmission shaft 5041 to descend, the screw rod 5042 is screwed through the nail channel 505222, and the fastening screw 904 is brought down and fastened to the balance wheel seat 901.

[0135] Preferably, the lower end of the screw rod 5042 is configured as a magnetized screwdriver head, which is beneficial for combining the screw rod 5042 with the fastening screw 904 and improving the quality of fastening the fastening screw 904 .

[0136] refer to Figure 1 as well as Figure 3 The eccentric cam feeding device 6 includes an eccentric cam vibrating disk 601 and an eccentric cam picking assembly 602. A fourth material guide track 6011 is provided at the upper end of the eccentric cam vibrating disk 601. The eccentric cam vibrating disk 601 conveys the inclined eccentric cam 905 one by one along the fourth material guide track 6011 through vibration until the inclined eccentric cam 905 is conveyed to the end of the fourth material guide track 6011.

[0137] refer to Figure 3 as well as Fig.17The end of the fourth guide rail 6011 is provided with an eccentric cam positioning assembly 603, which includes a positioning seat 6031 and a main limit cylinder 6032. The positioning seat 6031 is provided with a positioning guide groove 60311 in the horizontal direction that is connected to the fourth guide rail 6011. After the inclined eccentric cam 905 is transported to the end of the fourth guide rail 6011, it enters the positioning seat 6031 along the positioning guide groove 60311. The main limit cylinder 6032 is provided with On the positioning seat 6031, and the telescopic direction of the main limit cylinder 6032 is consistent with the opening direction of the positioning guide groove 60311, a limit block 60321 is arranged on the telescopic end of the main limit cylinder 6032, and an arc-shaped limit portion (not shown in the figure) is arranged on the limit block 60321, and the limit portion is adapted to the cylindrical portion of the inclined eccentric cam 905, and the inclined eccentric cam 905 is abutted through the limit portion, thereby limiting the inclined eccentric cam 905 from falling off the positioning seat 6031.

[0138] refer to Figure 3 as well as Fig.17 The eccentric cam positioning assembly 603 also includes an auxiliary limiting cylinder 6033, which is fixed on the positioning seat 6031 and arranged in the horizontal direction. An auxiliary limiting plate 60331 is arranged on the telescopic end of the auxiliary limiting cylinder 6033. The telescopic direction of the auxiliary limiting cylinder 6033 is perpendicular to the telescopic direction of the main limiting cylinder 6032. In this embodiment, two auxiliary limiting cylinders 6033 are arranged, and the two auxiliary limiting cylinders 6033 are respectively arranged on both sides of the main limiting cylinder 6032. The auxiliary limiting cylinder 6033 drives the auxiliary limiting plate 60331 to approach or move away from the inclined eccentric cam 905 on the positioning seat 6031, and the auxiliary limiting plate 60331 abuts against the cylindrical part of the inclined eccentric cam 905, thereby providing additional limiting effect.

[0139] refer to Fig.17 The positioning seat 6031 is provided with a sliding guide groove 60312 for the limit block 60321 and the auxiliary limit plate 60331 to move. The main limit cylinder 6032 and the auxiliary limit cylinder 6033 can respectively drive the limit block 60321 and the auxiliary limit plate 60331 to be accommodated in the sliding guide groove 60312, thereby realizing the separation of the limit block 60321 and the auxiliary limit plate 60331 from the inclined eccentric cam 905.

[0140] When taking the inclined eccentric cam 905, the main limit cylinder 6032 and the auxiliary limit cylinder 6033 contract simultaneously, so that the limit block 60321 and the auxiliary limit plate 60331 are separated from the inclined eccentric cam 905, and then the inclined eccentric cam 905 is transferred from the positioning seat 6031 to the balance wheel seat positioning clamping device 2 through the eccentric cam material taking assembly 602.

[0141] refer to Figure 3The eccentric cam material taking assembly 602 includes a flip cylinder 6021 and an eccentric cam clamping cylinder 6022. The eccentric cam clamping cylinder 6022 is fixed on the rotating shaft of the flip cylinder 6021. The fixing direction of the eccentric cam clamping cylinder 6022 is perpendicular to the axis of the rotating shaft of the flip cylinder 6021.

[0142] In this embodiment, the eccentric cam clamping cylinder 6022 is a pneumatic clamping finger, on which a clamping plate 60221 is fixed. The clamping plate 60221 is provided with an arc-shaped clamping groove 602211, which is adapted to the side of the cylindrical portion of the inclined eccentric cam 905.

[0143] The state of the inclined eccentric cam 905 on the positioning guide groove 60311 is that the inclined end 9052 is at the bottom and the plug-in shaft 9051 is at the top. Therefore, the inclined eccentric cam 905 needs to be flipped. First, the pneumatic clamping fingers drive the clamping pieces 60221 to approach each other, and the tilted eccentric cam 905 is clamped by abutting the cylindrical part of the tilted eccentric cam 905 through the clamping groove 602211. Then, the pneumatic clamping fingers are driven to flip as a whole through the flipping cylinder 6021. Finally, the pneumatic clamping fingers drive the clamping pieces 60221 to release the clamping of the tilted eccentric cam 905, and the tilted eccentric cam 905 is loaded onto the balance wheel seat 901 on the balance wheel seat positioning clamping device 2, thereby realizing the automated loading process of the tilted eccentric cam 905.

[0144] refer to Figure 3 as well as Fig.17 The eccentric cam positioning assembly 603 also includes an eccentric cam in-position detection sensor 6034. The eccentric cam in-position detection sensor 6034 is fixed on the positioning seat 6031, and the detection end of the eccentric cam in-position detection sensor 6034 is arranged toward the cylindrical portion of the inclined eccentric cam 905 on the positioning seat 6031. In this embodiment, the eccentric cam in-position detection sensor 6034 can adopt any one of an infrared sensor and a photoelectric sensor.

[0145] refer to Figure 1 , Figure 4 as well as Figure 8 The eccentric cam press-fitting device 7 includes a press-fitting rod 701, a universal press-fitting head 702 and a press-fitting driving member 703. The universal press-fitting head 702 is rotatably arranged at the lower end of the press-fitting rod 701. The universal press-fitting head 702 is located above the balance wheel seat positioning clamping device 2. The press-fitting driving member 703 drives the press-fitting rod 701 to rise and fall in the vertical direction. The lifting direction of the press-fitting rod 701 coincides with the center line of the balance wheel seat 901 on the balance wheel seat positioning clamping device 2.

[0146] refer to Figure 8The universal press-fitting head 702 includes a universal ball head 7021, a pressing block 7022 and a connecting block 7023. The universal ball head 7021 is fixed to the lower end of the press-fitting rod 701. The connecting block 7023 is provided with a first through hole (not marked in the figure) for the press-fitting rod 701 to pass through. The pressing block 7022 is provided with a spherical groove (not shown in the figure). The universal ball head 7021 is rotatably connected to the spherical groove. The pressing block 7022 is connected to the connecting block 7023 through a first threaded connector 7024, and the first threaded connector 7024 adopts a countersunk screw.

[0147] During installation, the press rod 701 passes through the first through hole, the universal ball head 7021 cooperates with the spherical groove on the pressing block 7022, and then the pressing block 7022 is connected to the connecting block 7023 through the first threaded connector 7024, which is convenient for installation and disassembly for maintenance.

[0148] In this embodiment, the pressing block 7022 is configured to be cylindrical for ease of processing.

[0149] refer to Figure 1 as well as Figure 4 The press-fitting driving member 703 is a press-fitting driving cylinder, which is installed on a bracket 10 . The press-fitting driving cylinder is telescopic in the vertical direction, and its telescopic end is fixedly connected to the press-fitting rod 701 .

[0150] refer to Figure 1 After the balance wheel seat 901 is installed with the retaining ring 903 and the inclined eccentric cam 905, the balance wheel seat 901 is removed from the balance wheel seat positioning and clamping device 2 through the unloading device 8. The unloading device 8 includes an unloading slide 801, a third translation drive member 802, a third lifting drive member 803 and a third tensioning and relaxing jaw 804. The third tensioning and relaxing jaw 804 is closed to clamp the balance wheel seat 901 or opened to place the balance wheel seat 901. The third lifting drive member 803 drives the third tensioning and relaxing jaw 804 to rise and fall in the vertical direction. The third translation drive member 802 drives the third lifting drive member 803 to move back and forth in the horizontal direction between the balance wheel seat positioning and clamping device 2 and the unloading slide 801. The unloading slide 801 is tilted downward, and the balance wheel seat 901 slides along the surface of the unloading slide 801 to realize unloading.

[0151] In this embodiment, the third translation drive member 802 and the third lifting drive member 803 are both telescopic cylinders, and the third tensioning and relaxing clamp 804 is a pneumatic clamp. Each clamping jaw of the third tensioning and relaxing clamp 804 is connected to a clamping block (not marked in the figure), and the clamping block (not marked in the figure) is in contact with the outer cylindrical surface of the balance wheel seat 901 to clamp the balance wheel seat 901.

[0152] refer to Figure 1In order to move the balance wheel seat 901 more smoothly, a fourth guide rail slider assembly 805 is provided corresponding to the third translation drive member 802. The fourth guide rail slider assembly 805 includes a fourth guide rail 8051 and a fourth slider 8052. The fourth guide rail 8051 is fixed on the third supporting column, and the fourth guide rail 8051 is horizontally arranged along the driving direction of the third translation drive member 802. The fourth slider 8052 is slidably connected to the fourth guide rail 8051. The third lifting drive member 803 is fixed on the fourth slider 8052 and moves with the movement of the fourth slider 8052.

[0153] Preferably, reference Figure 4 as well as Fig. 9 The balance wheel seat positioning clamping device 2 is arranged on a work station conversion component 17, and the work station conversion component 17 includes a base 1701, a work station turntable 1702 and a rotating driving member 1703. The base 1701 and the bracket 10 are fixed on the same working platform 18. The work station turntable 1702 is rotatably arranged on the base 1701 with the axis vertical. The rotating driving member 1703 drives the work station turntable 1702 to rotate around its own axis. The rotating driving member 1703 can be a driving motor. The balance wheel seat positioning clamping device 2 is arranged on the work station turntable 1702.

[0154] refer to Figure 4 as well as Fig. 9 A contact plate 17011 is fixedly provided on the base 1701 , and the driving block 202212 contacts the contact plate 17011 . The contact plate 17011 pushes the driving block 202212 to move away from the center of the base 1701 , thereby realizing the opening of the clamping structure 202 .

[0155] refer to Figure 4 as well as Fig. 9 The outer edge of the abutment plate 17011 is an arc surface, and the abutment plate 17011 includes a first wing 170111 and a second wing 170112. The first wing 170111 is arranged close to the eccentric cam pressing device 7, and the second wing 170112 is arranged on the opposite side of the first wing 170111. The driving block 202212 abuts against the first wing 170111 to open the clamping structure 202, so that the inclined eccentric cam 905 can be pressed. The first wing 170111 extends to the position of the blanking device 8, so that the inclined eccentric cam 905 is pressed and then unloaded through the blanking device 8. The driving block 202212 abuts against the second wing 170112 to open the clamping structure 202, and the balance wheel seat 901 can be placed on the fixture body 201.

[0156] refer to Figure 3 as well as Fig.21 The driving block 202212 is a contact bearing, and the inner ring of the contact bearing is fixed to the first end 20221 of the first clamping claw body 2022.

[0157] The driving block 202212 is configured to abut against the bearing 902 , thereby reducing the wear caused by the contact between the driving block 202212 and the abutment plate 17011 , which is beneficial to extending the service life of the driving block 202212 .

[0158] refer to Fig. 9 A second through hole (not shown in the figure) is provided on the work station turntable 1702, and the second through hole is located directly below the fixture body 201. A lifting member 19 and a lifting driving member 20 for driving the lifting member 19 to rise and fall in the vertical direction are provided on the base 1701 below the work station turntable 1702. The lifting member 19 can pass through the second through hole and abut against the bottom of the fixture body 201.

[0159] In this embodiment, the lifting driving member 20 is a lifting cylinder, the cylinder body of the lifting cylinder is vertically fixed on the working platform 18, and the telescopic end of the lifting cylinder is fixed to the lifting member 19.

[0160] refer to Figure 3 , Fig.18 as well as Fig. 20 A plurality of guide posts 17021 are vertically arranged on the work station turntable 1702, and a guide sleeve 17021 is provided on the outer sliding sleeve of the guide post 17021. The guide sleeve 170211 is fixed to the fixture body 201. A second reset elastic member (not shown in the figure) abutting against the bottom of the fixture body 201 is arranged on the work station turntable 1702. The second elastic member supports the fixture body 201 so that a certain distance is maintained between the fixture body 201 and the work station turntable 1702 under normal conditions. The distance can be 1mm to 3mm. In this embodiment, the fixture body 201 and the work station turntable 1702 maintain a distance of 3mm.

[0161] The second reset elastic member applies elastic force to the clamp body 201, so that under normal conditions, a certain gap is maintained between the clamp body 201 and the work station turntable 1702. Therefore, when the pressing rod 701 drives the universal pressing head 702 to perform the pressing action of the inclined eccentric cam 905, the second reset elastic member can buffer the pressure, reduce the impact on the work station turntable 1702, and avoid the possibility of damage to the work station turntable 1702.

[0162] The working process and principle of the embodiment of the present invention:

[0163] First, the workstation turntable 1702 rotates to the second wing 170112, the clamping structure 202 opens, the balance wheel seat 901 is loaded, the balance wheel seat vibration plate 101 conveys the balance wheel seat 901 to the end of the first material guide track 1011, and then the balance wheel seat picking assembly 102 places the balance wheel seat 901 into the fixture body 201, and the balance wheel seat positioning clamping device 2 positions the balance wheel seat 901;

[0164] Next, the work station turntable 1702 continues to rotate, and the positioning clamping device of the balance wheel 9011 is rotated to the position where the retaining ring feeding device 3 is located. The retaining ring 903 is fed, and the retaining ring vibration disk 301 transports the retaining ring 903 to the end of the second material guide track 3011. The positioning column lifting drive member 30254 drives the positioning column to descend, so that the retaining ring 903 can pass over the positioning column and enter the retaining ring positioning seat 30251. Then, the positioning column lifting drive member 30254 drives the positioning column to rise, and the positioning column rotation drive member 30253 drives the positioning column to rotate, so that the positioning column and the center hole 9031 of the retaining ring 903 are centrally positioned, and the positioning column drives the retaining ring 903 to rotate when rotating, until the convex edge of the retaining ring 903 abuts against the retaining ring positioning protrusion 302513;

[0165] Next, the retaining ring 903 takes the material, and the second translation driving member 3021 drives the second lifting driving member 3022 to move toward the retaining ring positioning seat 30251. After reaching the position, the second lifting driving member 3022 drives the second tensioning and relaxing clamp 3023 to descend. The second tensioning and relaxing clamp 3023 first contracts and then opens to abut against the inner wall of the center hole 9031 of the retaining ring 903, thereby clamping the retaining ring 903. In order to make the second tensioning and relaxing clamp 3023 better clamp the retaining ring 903, when the second tensioning and relaxing clamp 3023 descends, the positioning column lifting driving member 30254 can drive the positioning column to descend, thereby increasing the contact area between the second tensioning and relaxing clamp 3023 and the retaining ring 903.

[0166] After clamping the retaining ring 903, the second lifting driving member 3022 drives the second tensioning and relaxing clamping claw 3023 to rise, and the second translation driving member 3021 drives the second lifting driving member 3022 to move toward the balance wheel seat positioning clamping device 2. After moving to the position, the second lifting driving member 3022 descends, and the second tensioning and relaxing clamping claw 3023 contracts, so that the retaining ring 903 is placed on the balance wheel seat positioning clamping device 2 and positioned;

[0167] Then, the quantitative conveying component 402 quantitatively takes the fastening screw 904 and conveys the fastening screw 904 to the clamping jaw seat through the material guide air pipe;

[0168] The platform driving assembly 503 drives the mobile platform 502 to descend, and the mobile platform 502 drives the universal transmission shaft 5041 to descend, and the screw rod 5042 passes through the nail passage 505222, and the fastening screw 904 is brought down, and the electric screwdriver 504 rotates, thereby fastening the fastening screw 904 to the balance wheel seat 901 and fixing the retaining ring 903, thereby completing the assembly of the retaining ring 903;

[0169] The workstation turntable 1702 continues to rotate, and the positioning clamping device of the balance wheel 9011 is rotated to the position of the eccentric cam feeding device 6, and the inclined eccentric cam 905 is fed. The eccentric cam vibration plate 601 transports the inclined eccentric cam 905 to the end of the fourth guide track 6011 and transports it to the positioning seat 6031 along the positioning guide groove 60311. The eccentric cam clamping cylinder 6022 drives the clamping plate 60221 to clamp the inclined eccentric cam 905, and the main limit cylinder 6032 and the auxiliary limit cylinder 6032 are connected. The cylinder 6033 contracts, thereby releasing the limit on the tilted eccentric cam 905, and the flipping cylinder 6021 rotates the eccentric cam clamping cylinder 6022 as a whole, thereby flipping the tilted eccentric cam 905, and placing the tilted eccentric cam 905 in the inner ring of the bearing 902 of the balance wheel seat 901 of the balance wheel seat positioning clamping device 2. Because a distance is maintained between the auxiliary positioning piece 203 and the upper surface of the inner ring of the bearing 902, the inner ring of the bearing 902 can keep the tilted eccentric cam 905 in an upright state.

[0170] Then, the work station turntable 1702 rotates to the first wing plate, and the clamping structure 202 opens. Then, the lifting drive 20 drives the lifting part 19 to rise until the top of the lifting part 19 is 1mm to 2mm away from the lower surface of the fixture body 201. In the next step, the pressing drive 703 drives the pressing rod 701 to descend, and the universal pressing head 702 at the end of the pressing rod 701 abuts against the upper surface of the inclined eccentric cam 905. When the universal pressing head 702 presses the inclined eccentric cam 905 to move downward, the fixture body 201 moves downward, and the second reset elastic member can buffer the pressure and reduce the impact on the work station turntable 1702.

[0171] Because the universal press-fitting head 702 can rotate freely, the lower surface of the universal press-fitting head 702 can fully contact the upper surface of the inclined eccentric cam 905, and the lifting direction of the press-fitting rod 701 coincides with the center line direction of the balance wheel seat 901, that is, the lifting direction of the press-fitting rod 701 coincides with the axis of the bearing 902 on the balance wheel seat 901. Therefore, when the press-fitting rod 701 descends to drive the universal press-fitting head 702 to press down the inclined eccentric cam 905, the universal press-fitting head 702 applies a uniform vertical downward pressure to the inclined eccentric cam 905 through surface-to-surface contact, so that the inclined eccentric cam 905 is pressed smoothly, thereby improving the quality of press-fitting, and can be pressed into place in one time, with high production efficiency.

[0172] After the inclined eccentric cam 905 is pressed into place, the first reset elastic member applies elastic force to the auxiliary positioning member 203, and the auxiliary positioning member 203 abuts against the bottom of the inclined eccentric cam 905 in the bearing 902, thereby separating the press-fitted balance wheel seat 901 from the balance wheel seat positioning clamping device 2. Finally, the balance wheel seat 901 with the retaining ring 903 installed and the inclined eccentric cam 905 pressed into place is unloaded through the unloading device 8, completing the process of automatically pressing the inclined eccentric cam 905 on the balance wheel seat 901, with a high degree of automation.

[0173] Embodiment 2

[0174] This embodiment discloses an automatic assembly process of an eccentric cam and a retaining ring of a three-cam balance wheel seat. Based on the automatic assembly equipment of the eccentric cam and the retaining ring of the three-cam balance wheel seat of the above embodiment, the automatic assembly process comprises the following steps:

[0175] S1: The balance wheel seat loading device loads the balance wheel seat to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the balance wheel seat;

[0176] S2: The retaining ring feeding device loads the retaining ring and conveys it to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the retaining ring;

[0177] S3: The screw feeding device feeds the screws and quantitatively delivers the fastening screws to the screw tightening device;

[0178] S4: The screw tightening device tightens the fastening screw on the balance wheel seat on the balance wheel seat positioning clamping device and fixes the retaining ring;

[0179] S5: The eccentric cam feeding device feeds the material, conveys the inclined eccentric cam to the balance wheel seat positioning clamping device, and positions the inclined eccentric cam to the inner ring of the bearing of the balance wheel seat on the balance wheel seat positioning clamping device;

[0180] S6: The eccentric cam press-fitting device presses the inclined eccentric cam into the inner ring of the bearing;

[0181] S7: The unloading device removes the balance wheel seat assembled with the inclined eccentric cam and the retaining ring from the balance wheel seat positioning clamping device for unloading.

[0182] By repeating the above process, the automatic loading and assembly process of the balance wheel seat, the retaining ring, the fastening screws and the inclined eccentric cam can be realized, and the degree of automation is high, which is conducive to reducing the labor intensity of production and improving production efficiency.

[0183] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the invention.

Claims

1. Automatic assembly equipment for eccentric cam and retaining ring of three-cam balance wheel seat, characterized in that: It includes a balance wheel seat feeding device, a balance wheel seat positioning clamping device, a retaining ring feeding device, a screw feeding device, a screw tightening device, an eccentric cam feeding device, an eccentric cam pressing device and a feeding device; The balance wheel seat feeding device, the retaining ring feeding device, the screw feeding device, and the eccentric cam feeding device respectively feed the balance wheel seat, the retaining ring, the fastening screw, and the inclined eccentric cam to the balance wheel seat positioning clamping device, the screw tightening device fastens the fastening screw on the balance wheel seat and fixes the retaining ring, the eccentric cam pressing device presses the inclined eccentric cam into the inner ring of the bearing of the balance wheel seat, and the unloading device removes the balance wheel seat after the inclined eccentric cam and the retaining ring are installed from the balance wheel seat positioning clamping device; The eccentric cam feeding device comprises an eccentric cam vibrating disk and an eccentric cam picking assembly, a fourth material guide track is arranged at the upper end of the eccentric cam vibrating disk, an eccentric cam positioning assembly is arranged at the end of the fourth material guide track, the eccentric cam positioning assembly comprises a positioning seat and a main limiting cylinder arranged on the positioning seat, a positioning guide groove connected with the fourth material guide track is opened on the positioning seat in a horizontal direction, the telescopic direction of the main limiting cylinder is consistent with the opening direction of the positioning guide groove, a limiting block is arranged on the telescopic end of the main limiting cylinder, an arc-shaped limiting portion is arranged on the limiting block, the limiting portion abuts against the cylindrical portion of the inclined eccentric cam, and the eccentric cam picking assembly transfers the inclined eccentric cam from the positioning seat to the positioning clamping device of the balance wheel seat; The eccentric cam press-fitting device comprises a press-fitting rod, a universal press-fitting head and a press-fitting driving member, wherein the universal press-fitting head is rotatably arranged at the lower end of the press-fitting rod, the universal press-fitting head is located above the balance wheel seat positioning clamping device, and the press-fitting driving member drives the press-fitting rod to rise and fall in a vertical direction, and the lifting direction of the press-fitting rod coincides with the center line of the balance wheel seat on the balance wheel seat positioning clamping device; The eccentric cam material taking assembly comprises a turning cylinder and an eccentric cam clamping cylinder, and the eccentric cam clamping cylinder is fixed on the rotating shaft of the turning cylinder; The screw feeding device includes a screw vibrating plate and a quantitative conveying assembly, wherein the upper end of the screw vibrating plate is connected to a plurality of third material guide rails; the quantitative conveying assembly includes a quantitative material taking assembly, a plurality of driving air pipes and a plurality of material guide air pipes; The quantitative material taking component includes a conveying seat, a top plate, and a sliding baffle, the top plate is fixed to the conveying seat, the sliding baffle is slidably arranged relative to the conveying seat, a baffle driving member for pushing the sliding baffle to move back and forth is arranged on one side of the conveying seat, a plurality of feed grooves are horizontally opened on one side of the conveying seat, the opening direction of the feed grooves is perpendicular to the moving direction of the sliding baffle, the feed grooves are connected with the third material guiding track, a plurality of material discharge grooves are also arranged on the sliding baffle in the vertical direction, the driving air pipe is arranged above the top plate, and the air outlet end of the driving air pipe is arranged directly for the material discharge groove, the material guiding air pipe is connected with the bottom of the material discharge groove, and an opening is opened on the sliding baffle A plurality of material picking chutes are provided, the opening direction of the material picking chutes is parallel to the opening direction of the material feeding trough and the bottom of the material picking chute is connected to the material discharging trough, a material picking plate is slidably arranged in the material picking chute, and a material picking notch is arranged at one end of the material picking plate facing the material feeding trough, the material picking notch abuts against the connection between the head of the fastening screw and the threaded part to realize material picking, a feeding notch is arranged on the top plate directly opposite to the material feeding trough, and the quantitative material picking assembly also includes a material picking driving member for driving the material picking plate to move, the material picking driving member drives the material picking plate to approach the material feeding trough to take the fastening screw, and when the material picking driving member drives the material picking plate away from the material feeding trough, the fastening screw is dropped into the material discharging trough.

2. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 1 is characterized in that: The balance wheel seat feeding device includes a balance wheel seat vibration plate and a balance wheel seat picking assembly. The upper end of the balance wheel seat vibration plate is provided with a first material guide track. The balance wheel seat picking assembly moves the balance wheel seat from the end of the first material guide track to the balance wheel seat positioning and clamping device.

3. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 2 is characterized in that: The retaining ring feeding device includes a retaining ring vibrating plate and a retaining ring picking assembly. A second material guide track is provided at the upper end of the retaining ring vibrating plate. The retaining ring picking assembly moves the retaining ring from the end of the second material guide track to the balance wheel seat on the balance wheel seat positioning clamping device and positions the retaining ring.

4. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 3 is characterized in that: The quantitative material taking component takes a fixed number of fastening screws from the end of the third material guide track into the material guide air pipe. The other end of the material guide air pipe is connected to the screw tightening device. The driving air pipe provides a feeding air flow into the material guide air pipe to transport the fastening screws to the screw tightening device.

5. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 4, characterized in that: The screw tightening device includes a support frame, a mobile platform, a platform driving assembly, a plurality of electric screwdrivers and a screw positioning assembly. The mobile platform is slidably connected to the support frame, and the platform driving assembly drives the mobile platform to vertically rise and fall along the support frame. A plurality of electric screwdrivers are arranged on the mobile platform. The screw positioning assembly is fixed to the support frame and arranged below the electric screwdriver. The screw positioning assembly positions the fastening screws transported by the material guide air pipe, and the electric screwdriver fixes the fastening screws on the balance wheel seat as the mobile platform descends.

6. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 5, characterized in that: The balance wheel seat material picking assembly includes a first translation drive, a first lifting drive and a first tensioning and relaxing jaw, the first tensioning and relaxing jaw is closed to clamp the balance wheel seat or opened to place the balance wheel seat, the first lifting drive drives the first tensioning and relaxing jaw to rise and fall in the vertical direction, and the first translation drive drives the first lifting drive to move back and forth in the horizontal direction between the end of the first material guide track and the balance wheel seat positioning clamping device.

7. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 6, characterized in that: The retaining ring picking assembly includes a second translation drive, a second lifting drive and a second tensioning and relaxing jaw. The second tensioning and relaxing jaw opens and abuts against the inner wall of the center hole on the retaining ring to clamp the retaining ring or contracts to place the retaining ring. The second lifting drive drives the second tensioning and relaxing jaw to rise and fall in the vertical direction. The second translation drive drives the second lifting drive to move back and forth in the horizontal direction between the end of the second material guide track and the balance wheel seat positioning clamping device.

8. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 7, characterized in that: The retaining ring material picking assembly also includes a retaining ring positioning assembly, which includes a retaining ring positioning seat, a rotating positioning column, a positioning column rotating drive and a positioning column lifting drive. The rotating positioning column is vertically arranged at the center of the retaining ring positioning seat, the positioning column rotating drive drives the rotating positioning column to rotate around its own axis, and the positioning column lifting drive drives the rotating positioning column to rise and fall in the vertical direction. The rotating positioning column is clearance-matched with the inner wall of the center hole on the retaining ring, a retaining ring positioning groove is provided on the retaining ring positioning seat, and the retaining ring positioning groove is connected with the second material guide track. A retaining ring positioning protrusion is provided on the top of the retaining ring positioning groove, and the retaining ring positioning protrusion abuts against the circumferential protrusion of the retaining ring to realize the positioning of the retaining ring.

9. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 8, characterized in that: The top end of the rotation positioning column is provided with an arc guide surface, and the arc guide surface is provided with an adjustment protrusion.

10. The automatic assembly equipment of the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 7, 8 or 9, characterized in that: The unloading device includes an unloading chute, a third translation drive, a third lifting drive and a third tensioning and relaxing jaw. The third tensioning and relaxing jaw is closed to clamp the balance wheel seat or opened to place the balance wheel seat. The third lifting drive drives the third tensioning and relaxing jaw to rise and fall in the vertical direction. The third translation drive drives the third lifting drive to move back and forth in the horizontal direction between the balance wheel seat positioning clamping device and the unloading chute.

11. The automatic assembly equipment of the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 5, characterized in that: The fixing direction of the eccentric cam clamping cylinder is perpendicular to the axis of the rotating shaft of the flip cylinder; The eccentric cam clamping cylinder is a pneumatic clamping finger, a clamping sheet is fixed on the clamping finger of the pneumatic clamping finger, an arc-shaped clamping groove is opened on the clamping sheet, and the clamping groove is adapted to the side surface of the cylindrical part of the inclined eccentric cam.

12. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 11, characterized in that: The eccentric cam positioning assembly also includes an auxiliary limiting cylinder, which is arranged in a horizontal direction, and an auxiliary limiting plate is arranged on the telescopic end of the auxiliary limiting cylinder. The telescopic direction of the auxiliary limiting cylinder is perpendicular to the telescopic direction of the main limiting cylinder. The auxiliary limiting cylinder drives the auxiliary limiting plate to approach or move away from the inclined eccentric cam on the positioning seat.

13. The automatic assembly equipment of the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 11 or 12, characterized in that: The eccentric cam positioning assembly also includes an eccentric cam in-position detection sensor, which is fixed on the positioning seat and has a detection end disposed toward the cylindrical portion of the inclined eccentric cam on the positioning seat.

14. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 1, 2, 3, 4, 5, 6, 7, 9, 11 or 12, characterized in that: The balance wheel seat positioning clamping device includes a fixture body and a clamping structure. The fixture body is provided with a positioning groove, and the positioning groove includes a balance wheel positioning groove and a cylindrical positioning groove. The cylindrical positioning groove is adapted to the cylinder of the balance wheel seat. The balance wheel positioning groove is distributed along the circumference of the cylindrical positioning groove and is connected with the cylindrical positioning groove. The balance wheel positioning groove is adapted to the three balance wheels on the balance wheel seat. A supporting protrusion is also fixedly provided at the center of the fixture body. The supporting protrusion abuts against the lower surface of the bearing on the balance wheel seat. The clamping structure clamps the balance wheel seat to the fixture body.

15. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 14, characterized in that: The clamping structure includes a clamping seat, a first clamping claw body, and a second clamping claw body. The first clamping claw body and the second clamping claw body are both hinged on the clamping seat. The first clamping claw body is provided with a driving protrusion, and the second clamping claw body is provided with an abutting portion abutting with the driving protrusion. The first clamping claw body is provided with a driving block. The clamping structure also includes a clamping tension spring for realizing clamping of the clamping structure. One end of the clamping tension spring is fixed to the first clamping claw body or the second clamping claw body, and the other end is fixed to the clamping seat.

16. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 15, characterized in that: The balance wheel seat positioning clamping device is arranged on a station conversion assembly, and the station conversion assembly includes a base, a station turntable and a rotary drive member, the station turntable is rotatably arranged on the base in a state where the axis is vertical, the rotary drive member drives the station turntable to rotate around its own axis, and the balance wheel seat positioning clamping device is arranged on the station turntable; An abutment plate is fixedly arranged on the base, and the driving block abuts against the abutment plate. The abutment plate pushes the driving block to move away from the center of the base to realize the opening of the clamping structure.

17. The automatic assembly equipment for the eccentric cam and retaining ring of the three-cam balance wheel seat according to claim 16, characterized in that: A second through hole is provided on the work station turntable, and the second through hole is located directly below the fixture body. A lifting member and a lifting driving member that drives the lifting member to rise and fall in a vertical direction are provided on the base below the work station turntable. The lifting member can pass through the second through hole and abut against the bottom of the fixture body.

18. The automatic assembly process of the eccentric cam and retaining ring of the three-cam balance wheel seat is characterized by: The automatic assembly equipment of the eccentric cam and the retaining ring of the three-cam balance wheel seat according to any one of claims 1 to 17 comprises the following steps: S1: The balance wheel seat loading device loads the balance wheel seat to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the balance wheel seat; S2: The retaining ring feeding device loads the retaining ring and conveys it to the balance wheel seat positioning and clamping device, and the balance wheel seat positioning and clamping device positions and clamps the retaining ring; S3: The screw feeding device feeds the screws and quantitatively delivers the fastening screws to the screw tightening device; S4: The screw tightening device tightens the fastening screw on the balance wheel seat on the balance wheel seat positioning clamping device and fixes the retaining ring; S5: The eccentric cam feeding device feeds the material, conveys the inclined eccentric cam to the balance wheel seat positioning clamping device, and positions the inclined eccentric cam to the inner ring of the bearing of the balance wheel seat on the balance wheel seat positioning clamping device; S6: The eccentric cam press-fitting device presses the inclined eccentric cam into the inner ring of the bearing; S7: The unloading device removes the balance wheel seat assembled with the inclined eccentric cam and the retaining ring from the balance wheel seat positioning clamping device for unloading.

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