Eccentric cam assembly device for three-cam balance wheel seat

Abstract

The present invention discloses an eccentric cam assembly device for a three-cam balance wheel seat. The scheme includes a balance wheel seat positioning clamping assembly and an eccentric cam press-fitting assembly, wherein the eccentric cam press-fitting assembly includes 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, and the universal press-fitting head is located above the balance wheel seat positioning clamping assembly, 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 assembly. By arranging a universal press-fitting head at the lower end of the press-fitting rod, the universal press-fitting head adaptively fits the inclined upper surface of the inclined eccentric cam to be press-fitted, thereby making the inclined eccentric cam evenly stressed, improving the quality of press-fitting, and being able to be completed in one step, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to the field of assembly equipment, and in particular to an eccentric cam assembly device for a three-cam balance wheel seat. 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 Figure 4 The three-cam balance wheel seat 3 mainly includes a balance wheel seat 301, a bearing 302, an inclined eccentric cam 305, a retaining ring 303 and a fastening screw 304. Three balance wheels 3011 are convexly arranged on the balance wheel seat 301. The bearing 302 is installed at the center of the balance wheel seat 301. The inclined eccentric cam 305 is inserted at the center of the bearing 301. The inclined eccentric cam 305 is transitionally matched with the inner ring of the bearing 302. The balance wheel seat 301 is provided with a threaded hole (not shown in the figure) on the reverse side of the balance wheel 3011. The fastening screw 304 fixes the retaining ring 303 to the balance wheel seat 301 through the threaded hole.

[0003] refer to Figure 6 The inclined eccentric cam 305 includes a plug-in shaft portion 3051 and an inclined end portion 3052. The diameter of the plug-in shaft portion 3051 is smaller than that of the inclined end portion 3052. The plug-in shaft portion 3051 cooperates with the bearing, and the surface of the inclined end portion 3052 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] Therefore, it is necessary to provide a device for assembling an inclined eccentric cam with high production efficiency and high yield. Summary of the invention

[0008] In order to solve the above technical problems, the purpose of the present invention is to provide an eccentric cam assembly device for a three-cam balance wheel seat, which includes a balance wheel seat positioning and clamping assembly and an eccentric cam press-fitting assembly. The balance wheel seat is positioned and clamped by the balance wheel seat positioning and clamping assembly, and then the inclined eccentric cam is pressed onto the balance wheel seat by the eccentric cam press-fitting assembly. The eccentric cam assembly device for the three-cam balance wheel seat has the advantages of high production efficiency and high yield rate.

[0009] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows:

[0010] The eccentric cam assembly device of the three-cam balance wheel seat comprises a balance wheel seat positioning clamping assembly and an eccentric cam press-fitting assembly, wherein the eccentric cam press-fitting assembly 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, and the universal press-fitting head is located above the balance wheel seat positioning clamping assembly, and the press-fitting driving member drives the press-fitting rod to rise and fall in the vertical direction, and the rising and falling direction of the press-fitting rod coincides with the center line of the balance wheel seat on the balance wheel seat positioning clamping assembly.

[0011] By such an arrangement, the press-fitting drive can drive the press-fitting rod to rise and fall in the vertical direction. When press-fitting the inclined eccentric cam, after the balance wheel seat is placed on the positioning clamping assembly, the inclined eccentric cam is placed at the center of the bearing on the balance wheel seat, and then the press-fitting rod is driven down by the press-fitting drive, so that the universal press-fitting head at the end of the press-fitting rod abuts against the upper surface of the inclined eccentric cam. Since the universal press-fitting head can rotate freely, the lower surface of the universal press-fitting head can fully contact the upper surface of the inclined eccentric cam, and the lifting direction of the press-fitting rod coincides with the center line direction of the balance wheel seat, that is, the lifting direction of the press-fitting rod coincides with the axis of the bearing on the balance wheel seat. Therefore, when the press-fitting rod descends to drive the universal press-fitting head to press down the inclined eccentric cam, the universal press-fitting head applies uniform vertical downward pressure to the inclined eccentric cam through face-to-face contact, so that the inclined eccentric cam is pressed smoothly, thereby improving the quality of press-fitting, and can be pressed into place in one time, with high production efficiency.

[0012] Preferably, the universal press-fitting head includes a universal ball head, a press block and a connecting block, the universal ball head is fixed to the lower end of the press-fitting rod, the connecting block is provided with a first through hole for the press-fitting rod to pass through, the press block is provided with a spherical groove, the universal ball head is rotatably connected to the spherical groove, and the press block is connected to the connecting block via a first threaded connector.

[0013] With this arrangement, during installation, the press rod passes through the first through hole, the universal ball head cooperates with the spherical groove on the press block, and then the press block is connected to the connecting block through the first threaded connector, which is convenient for installation and disassembly for maintenance.

[0014] Preferably, the balance wheel seat positioning clamping assembly 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.

[0015] 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.

[0016] Preferably, the balance wheel seat positioning clamping assembly also includes an auxiliary positioning piece, which is movably arranged vertically at the center of the clamp body, a through groove for the auxiliary positioning piece to pass through is opened at the center of the supporting protrusion, and a first reset elastic piece for driving the auxiliary positioning piece to move upward is provided on the clamp body, and the auxiliary positioning piece is clearance-matched with the inner ring of the bearing on the balance wheel seat, and after the balance wheel seat is positioned in the positioning groove, the top surface of the auxiliary positioning piece maintains a distance from the upper surface of the inner ring of the bearing on the balance wheel seat.

[0017] By such an arrangement, the auxiliary positioning piece 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 precise, and the auxiliary positioning piece is movably arranged in the center of the fixture body along the vertical movement, and the top surface of the auxiliary positioning piece maintains a distance from the upper surface of the inner ring of the balance wheel seat bearing. When the inclined eccentric cam is placed into the inner ring of the bearing, the inclined eccentric cam can be pre-positioned by the distance. After the inclined eccentric cam is press-fitted, the first reset elastic piece applies an elastic force to the auxiliary positioning piece, and the auxiliary positioning piece abuts against the bottom of the inclined eccentric cam in the bearing, thereby separating the press-fitted balance wheel seat from the balance wheel seat positioning clamping assembly, making it convenient to unload the press-fitted balance wheel seat.

[0018] Preferably, the clamp body includes a first body, a second body, a third body and a fourth body arranged in sequence from bottom to top, the first body, the second body, the third body and the fourth body are connected by a second threaded connection member, the supporting protrusion is fixed to the third body, the second body is provided with a first slide groove section, the supporting protrusion is provided with a second slide groove section connected with the first slide groove section, the first slide groove section is connected with the second slide groove section to form a slide groove for the auxiliary positioning member to slide, the first reset elastic member is arranged in the slide groove, one end of which abuts against the bottom of the slide groove, and the other end abuts against the auxiliary positioning member, the first reset elastic member applies an elastic force pointing to the outside of the slide groove to the auxiliary positioning member, the supporting protrusion is located in the first slide groove section and is provided with a first limiting step portion, and the auxiliary positioning member is provided with a second limiting step portion abutting against the first limiting step portion.

[0019] Through such an arrangement, the first body, the second body, the third body and the fourth body are connected by the second threaded connection, which is convenient for processing, assembly and disassembly for maintenance. The auxiliary positioning part slides along the slide groove formed by the second body and the supporting protrusion, and the second limiting step part abuts against the first limiting step part, thereby limiting the auxiliary positioning part from detaching from the slide groove.

[0020] 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.

[0021] 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 the 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.

[0022] Preferably, the balance wheel seat positioning and clamping assembly is arranged on a work station conversion assembly, and the work station conversion assembly includes a base, a work station turntable and a rotating drive component, the work station turntable is rotatably arranged on the base with its axis vertical, the rotating drive component drives the work station turntable to rotate around its own axis, and the balance wheel seat positioning and clamping assembly is arranged on the work station turntable; an abutment plate is fixedly provided on the base, the drive block abuts against the abutment plate, and the abutment plate pushes the drive block to move away from the center of the base to realize the opening of the clamping structure.

[0023] Through such an arrangement, the balance wheel seat positioning clamping assembly is on the work station turntable, and the work station turntable is driven to move by the rotating 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.

[0024] Preferably, the driving block is an abutment bearing, and the inner ring of the abutment bearing is fixed to the first clamping claw body.

[0025] By configuring in this way, the driving block is configured as an abutment bearing, thereby reducing the wear caused by the contact between the driving block and the abutment plate, which is beneficial to extending the service life of the driving block.

[0026] 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.

[0027] 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.

[0028] Preferably, a plurality of guide columns are vertically arranged on the work station turntable, a guide sleeve is provided on the outer sliding sleeve of the guide column, the guide sleeve is fixed to the fixture body, and a second reset elastic member abutting against the bottom of the fixture body is arranged on the work station turntable.

[0029] Through such an arrangement, the second reset elastic member applies elastic force to the clamp body, so that under normal conditions, a certain gap is maintained between the clamp body and the workstation turntable. Therefore, when the pressing rod drives the universal pressing head to perform the pressing action of the inclined eccentric cam, the second reset elastic member can buffer the pressure, reduce the impact on the workstation turntable, and avoid the possibility of damage to the workstation turntable.

[0030] Compared with the prior art, the present invention has achieved beneficial technical effects:

[0031] 1. A universal pressing head is arranged at the lower end of the pressing rod, and 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, the quality of the pressing is improved, and the pressing can be completed in one step, thereby improving production efficiency.

[0032] 2. The universal press-fit head includes a universal ball head, a pressing block and a connecting head, which is convenient for installation and disassembly for maintenance.

[0033] 3. The balance wheel seat is positioned through the balance wheel seat positioning groove and the cylindrical positioning groove on the fixture body, and the supporting protrusion is abutted against the lower surface of the bearing on the balance wheel seat to avoid displacement or deformation of the bearing during the press-fitting process. The balance wheel seat is clamped through the clamping structure to achieve positioning and clamping of the balance wheel seat.

[0034] 4. By providing an auxiliary positioning member and a first resetting elastic member, the positioning accuracy is improved and it is convenient to cut the balance wheel seat after the inclined eccentric cam is pressed.

[0035] 5. The clamp body is configured to include a first body, a second body, a third body and a fourth body, and the four bodies are connected by a second threaded connector to facilitate processing, assembly and disassembly for maintenance.

[0036] 6. 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.

[0037] 7. The balance wheel seat positioning clamping assembly is arranged on a station conversion assembly to facilitate station conversion of the balance wheel seat positioning clamping assembly, and an abutment plate is arranged to realize automatic clamping or automatic release of clamping of the clamping structure for station conversion.

[0038] 8. Set the drive block to abut the bearing to reduce the wear of the drive block and extend its service life.

[0039] 9. By setting up 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.

[0040] 10. The guide column and the guide sleeve are matched, and a second resetting elastic member is provided to buffer the force of the station turntable and avoid the possibility of damage to the station turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 1 is a schematic diagram of the overall structure of the eccentric cam assembly device of the three-cam balance wheel seat in an embodiment of the present invention;

[0042] Figure 2 yes Figure 1 Enlarged view of part A in the middle;

[0043] Figure 3 A front view of the eccentric cam assembly device of the three-cam balance wheel seat in the embodiment of the present invention;

[0044] Figure 4 2 is a schematic diagram of the structure of a three-cam balance wheel seat in an embodiment of the present invention;

[0045] Figure 5 is a side view of a three-cam balance wheel seat in an embodiment of the present invention;

[0046] Figure 6 is an exploded schematic diagram of a three-cam balance wheel seat in an embodiment of the present invention;

[0047] Figure 7 is a schematic structural diagram of a clamp body in an embodiment of the present invention;

[0048] Figure 8 is a top view of the clamp body in an embodiment of the present invention;

[0049] Fig. 9 yes Figure 8 Sectional view of the middle BB plane;

[0050] Fig.10 2 is a schematic structural diagram of a clamping structure in an embodiment of the present invention.

[0051] The technical features indicated by the reference numerals are as follows:

[0052] 1. Balance wheel seat positioning clamping assembly; 101. Clamp body; 1011. Positioning groove; 10111. Balance wheel positioning groove; 10112. Cylindrical positioning groove; 1012. Supporting protrusion; 10121. Second slide groove segment; 10122. First limiting step; 102. Clamping structure; 1021. Clamping seat; 1022. First clamping claw body; 10221. First end; 10 2211, driving protrusion; 102212, driving block; 10222, second end; 1023, second clamping claw body; 10231, abutment; 103, auxiliary positioning member; 1031, second limiting step; 2, eccentric cam press-fitting assembly; 201, press-fitting rod; 202, universal press-fitting head; 2021, universal ball head; 2022, press block; 2023, connecting block; 202 4. first threaded connector; 203. press-fit drive member; 3. three-cam balance wheel seat; 301. balance wheel seat; 3011. balance wheel; 302. bearing; 303. retaining ring; 304. fastening screw; 305. inclined eccentric cam; 3051. plug-in shaft; 3052. inclined end; 4. bracket; 5. first body; 6. second body; 601. first slide groove segment; 7. third body; 8. fourth body; 9. second threaded connector; 10. slide groove; 11. station conversion assembly; 1101. base; 11011. abutment plate; 110111. first wing; 110112. second wing; 1102. station turntable; 11021. guide column; 110211. guide sleeve; 1103. rotating drive member; 12. working platform; 13. lifting member; 14. lifting drive member. DETAILED DESCRIPTION

[0053] 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.

[0054] Example

[0055] refer to Figure 1 as well as Figure 2 This embodiment discloses an eccentric cam assembly device for a three-cam balance wheel seat, including a balance wheel seat positioning and clamping assembly 1 and an eccentric cam press-fitting assembly 2. The balance wheel seat positioning and clamping assembly 1 is used to position and clamp the balance wheel seat 301, and the eccentric cam press-fitting assembly 2 is used to press the inclined eccentric cam 305 onto the balance wheel seat 301.

[0056] refer to Figure 4 , Figure 5 as well as Figure 6The assembled three-cam balance wheel seat 3 includes a balance wheel seat 301, a bearing 302, a retaining ring 303, a fastening screw 304 and an inclined eccentric cam 305. The balance wheel seat 301 is cylindrical, and three balance wheels 3011 are arranged at the bottom of the balance wheel seat 301 along the circumference of the balance wheel seat 301. The bearing 302 is pressed into the center of the balance wheel seat 301, and the axis of the bearing 302 coincides with the axis of the balance wheel seat 301. The eccentric cam assembly device of the three-cam balance wheel seat of this embodiment is used to press the inclined eccentric cam 305 into the inner ring of the bearing 302.

[0057] refer to Figure 5 as well as Figure 6 The inclined eccentric cam 305 includes an inserting shaft portion 3051 inserted into the inner ring of the bearing 302 and an inclined end portion 3052 located at the upper end of the inserting shaft portion 3051 .

[0058] refer to Figure 1 as well as Figure 2 The eccentric cam press-fitting assembly 2 includes a press-fitting rod 201, a universal press-fitting head 202 and a press-fitting driving member 203. The universal press-fitting head 202 is rotatably arranged at the lower end of the press-fitting rod 201. The universal press-fitting head 202 is located above the balance wheel seat positioning and clamping assembly 1. The press-fitting driving member 203 drives the press-fitting rod 201 to rise and fall in the vertical direction. The lifting direction of the press-fitting rod 201 coincides with the center line of the balance wheel seat 301 on the balance wheel seat positioning and clamping assembly 1.

[0059] refer to Figure 1 and Figure 2 The universal press-fitting head 202 includes a universal ball head 2021, a pressing block 2022 and a connecting block 2023. The universal ball head 2021 is fixed to the lower end of the press-fitting rod 201. The connecting block 2023 is provided with a first through hole (not marked in the figure) for the press-fitting rod 201 to pass through. The pressing block 2022 is provided with a spherical groove (not shown in the figure). The universal ball head 2021 is rotatably connected to the spherical groove. The pressing block 2022 is connected to the connecting block 2023 through a first threaded connector 2024, and the first threaded connector 2024 adopts a countersunk screw.

[0060] In this embodiment, the pressing block 2022 is configured to be cylindrical for ease of processing.

[0061] refer to Figure 1 and Figure 2 The press-fitting driving member 203 is a press-fitting driving cylinder, which is installed on a bracket 4. The press-fitting driving cylinder is telescopic in the vertical direction, and its telescopic end is fixedly connected to the press-fitting rod 201.

[0062] refer to Figure 1 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.10The balance wheel seat positioning clamping assembly 1 includes a fixture body 101 and a clamping structure 102. A positioning groove 1011 is opened on the fixture body 101. The positioning groove 1011 includes a balance wheel positioning groove 10111 and a cylindrical positioning groove 10112. The cylindrical positioning groove 10112 is adapted to the cylinder of the balance wheel seat 301. The balance wheel positioning groove 10111 is distributed along the circumference of the cylindrical positioning groove 10112 and is connected with the cylindrical positioning groove 10112. The balance wheel positioning groove 10111 is adapted to the three balance wheels 3011 on the balance wheel seat 301. A supporting protrusion 1012 is also fixedly provided at the center of the fixture body 101. The supporting protrusion 1012 abuts against the lower surface of the bearing 302 on the balance wheel seat 301. The clamping structure 102 clamps the balance wheel seat 301 to the fixture body 101.

[0063] refer to Figure 7 as well as Fig. 9 The balance wheel seat positioning clamping assembly 1 also includes an auxiliary positioning member 103, which is movably arranged in the vertical direction at the center of the clamp body 101. A through groove (not marked in the figure) for the auxiliary positioning member 103 to pass through is opened in the center of the supporting protrusion 1012. A first reset elastic member (not shown in the figure) is provided on the clamp body 101 to drive the auxiliary positioning member 103 to move upward. The auxiliary positioning member 103 is clearance-matched with the inner ring of the bearing 302 on the balance wheel seat 301. After the balance wheel seat 301 is positioned in the positioning groove 1011, the top surface of the auxiliary positioning member 103 maintains a distance from the upper surface of the inner ring of the bearing 302 on the balance wheel seat 301, and the distance can be 1 to 3 mm.

[0064] refer to Figure 7 , Figure 8 as well as Fig. 9 The clamp body 101 includes a first body 5, a second body 6, a third body 7 and a fourth body 8 which are arranged in sequence from bottom to top. The first body 5, the second body 6, the third body 7 and the fourth body 8 are connected by a second threaded connector 9. The second threaded connector 9 adopts a countersunk screw. The supporting protrusion 1012 is fixed to the third body 7. A first slide groove segment 601 is provided on the second body 6. A second slide groove segment 10121 which is connected to the first slide groove segment 601 is provided on the supporting protrusion 1012. The first slide groove segment 601 is connected to the second slide groove segment 10121 to form a slide groove 10 for the auxiliary positioning member 103 to slide. A first reset elastic member is arranged in the slide groove 10. One end of the first reset elastic member abuts against the bottom of the slide groove 10, and the other end abuts against the auxiliary positioning member 103. The first reset elastic member applies an elastic force to the auxiliary positioning member 103 pointing to the outside of the slide groove 10.

[0065] refer to Fig. 9The supporting protrusion 1012 is located in the first slide groove segment 601 and is provided with a first limiting step portion 10122 , and the auxiliary positioning member 103 is provided with a second limiting step portion 1031 abutting against the first limiting step portion 10122 .

[0066] refer to Fig.10 The clamping structure 102 includes a clamping seat 1021, a first clamping claw body 1022, and a second clamping claw body 1023. The first clamping claw body 1022 and the second clamping claw body 1023 are both hinged to the clamping seat 1021. The first clamping claw body 1022 and the second clamping claw body 1023 each include a first end 10221 and a second end 10222. The first end 10221 and the second end 10222 are respectively located on both sides of the hinge position. The second end 10222 Abutting against the outer side of the balance wheel seat 301 to clamp the balance wheel seat 301, the first clamping claw body 1022 is provided with a driving protrusion 102211, and the second clamping claw body 1023 is provided with an abutting portion 10231 abutting against the driving protrusion 102211, the driving protrusion 102211 is located on the side where the first end 10221 of the first clamping claw body 1022 is located, and the abutting portion 10231 is located on the side where the first end 10221 of the second clamping claw body 1023 is located;

[0067] A driving block 102212 is provided on the first clamping claw body 1022, and the driving block 102212 is located on the side where the first end 10221 of the first clamping claw body 1022 is located. The clamping structure 102 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 1022 or the second clamping claw body 1023, and the other end is fixed to the clamping seat 1021. In this embodiment, one end of the clamping tension spring is fixed to the first end 10221 of the second clamping claw body 1023, and the other end is fixed to the clamping seat 1021. The clamping tension spring applies a pulling force to the second clamping claw body 1023, so that the second end 10222 of the first clamping claw body 1022 and the second end 10222 of the second clamping claw body 1023 are close to each other, thereby realizing the clamping of the clamping structure 102 under normal conditions.

[0068] refer to Figure 1 , Figure 2 as well as Figure 3 The balance wheel seat positioning and clamping assembly 1 is arranged on a work station conversion assembly 11, and the work station conversion assembly 11 includes a base 1101, a work station turntable 1102 and a rotating driving member 1103. The base 1101 and the bracket 4 are fixed on the same working platform 12. The work station turntable 1102 is rotatably arranged on the base 1101 with the axis vertical. The rotating driving member 1103 drives the work station turntable 1102 to rotate around its own axis. The rotating driving member 1103 can be a driving motor. The balance wheel seat positioning and clamping assembly 1 is arranged on the work station turntable 1102.

[0069] refer to Figure 1 as well as Figure 2 A contact plate 11011 is fixedly provided on the base 1101 , and the driving block 102212 contacts the contact plate 11011 . The contact plate 11011 pushes the driving block 102212 to move away from the center of the base 1101 , thereby realizing the opening of the clamping structure 102 .

[0070] refer to Figure 1 as well as Figure 2 The outer edge of the abutment plate 11011 is an arc surface, and the abutment plate 11011 includes a first wing 110111 and a second wing 110112. The first wing 110111 is arranged close to the eccentric cam press-fitting assembly 2, and the second wing 110112 is arranged on the opposite side of the first wing 110111. The driving block 102212 abuts against the first wing 110111 to open the clamping structure 102, so that the operation of press-fitting the inclined eccentric cam 305 can be performed. The driving block 102212 abuts against the second wing 110112 to open the clamping structure 102, and the balance wheel seat 301 can be placed on the clamp body 101.

[0071] refer to Fig.10 The driving block 102212 is a contact bearing, and the inner ring of the contact bearing is fixed to the first end 10221 of the first clamping claw body 1022.

[0072] refer to Figure 1 as well as Figure 3 A second through hole (not shown in the figure) is provided on the work station turntable 1102, and the second through hole is located directly below the fixture body 101. A lifting member 13 and a lifting driving member 14 for driving the lifting member 13 to rise and fall in the vertical direction are provided on the base 1101 below the work station turntable 1102. The lifting member 13 can pass through the second through hole and abut against the bottom of the fixture body 101.

[0073] In this embodiment, the lifting driving member 14 is a lifting cylinder, the cylinder body of the lifting cylinder is vertically fixed on the working platform 12, and the telescopic end of the lifting cylinder is fixed to the lifting member 13.

[0074] refer to Figure 2 A plurality of guide posts 11021 are vertically arranged on the work station turntable 1102, and a guide sleeve 110211 is provided on the outer sliding sleeve of the guide post 11021. The guide sleeve 110211 is fixed to the fixture body 101. A second reset elastic member (not shown in the figure) abutting against the bottom of the fixture body 101 is arranged on the work station turntable 1102. The second elastic member supports the fixture body 101 so that a certain distance is maintained between the fixture body 101 and the work station turntable 1102 under normal conditions. The distance can be 1mm to 3mm. In this embodiment, the fixture body 101 and the work station turntable 1102 maintain a distance of 3mm.

[0075] The working process and principle of the embodiment of the present invention:

[0076] First, the workstation turntable 1102 rotates to the second wing 110112, the clamping structure 102 is opened, and the balance wheel seat 301 after the bearing 302 is installed is placed in the fixture body 101 to position the balance wheel seat 301. Then, the plug-in shaft 3051 of the inclined eccentric cam 305 is placed in the inner ring of the bearing 302. Because the auxiliary positioning member 103 maintains a distance from the upper surface of the inner ring of the bearing 302, the inner ring of the bearing 302 can keep the inclined eccentric cam 305 upright. Then, the workstation turntable 1102 rotates to the first wing. At the plate, the clamping structure 102 opens, and then the lifting drive 14 drives the lifting member 13 to rise, until the top of the lifting member 13 is 1mm to 2mm away from the lower surface of the clamp body 101. In the next step, the pressing drive 203 drives the pressing rod 201 to descend, and the universal pressing head 202 at the end of the pressing rod 201 abuts against the upper surface of the inclined eccentric cam 305. When the universal pressing head 202 presses the inclined eccentric cam 305 to move downward, the clamp body 101 moves downward, and the second reset elastic member can buffer the pressure to reduce the impact on the workstation turntable 1102.

[0077] Because the universal press-fitting head 202 can rotate freely, the lower surface of the universal press-fitting head 202 can fully contact the upper surface of the inclined eccentric cam 305, and the lifting direction of the press-fitting rod 201 coincides with the center line direction of the balance wheel seat 301, that is, the lifting direction of the press-fitting rod 201 coincides with the axis of the bearing 302 on the balance wheel seat 301. Therefore, when the press-fitting rod 201 descends to drive the universal press-fitting head 202 to press the inclined eccentric cam 305, the universal press-fitting head applies uniform vertical downward pressure to the inclined eccentric cam 305 through surface-to-surface contact, so that the inclined eccentric cam 305 is pressed smoothly, thereby improving the quality of press-fitting, and can be pressed into place in one time, with high production efficiency.

[0078] After the inclined eccentric cam 305 is press-fitted, the first reset elastic member applies elastic force to the auxiliary positioning member 103, and the auxiliary positioning member 103 abuts against the bottom of the inclined eccentric cam 305 in the bearing 302, thereby separating the press-fitted balance wheel seat 301 from the balance wheel seat positioning clamping assembly 1, and then the press-fitted balance wheel seat 301 can be cut.

[0079] 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. An eccentric cam assembly device for a three-cam balance wheel seat, characterized in that: It comprises a balance wheel seat positioning clamping assembly and an eccentric cam press-fitting assembly, wherein the eccentric cam press-fitting assembly 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, and the universal press-fitting head is located above the balance wheel seat positioning clamping assembly, 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 assembly; the press-fitting driving member is a press-fitting driving cylinder, which is installed on a bracket, and the press-fitting driving cylinder is telescopic in a vertical direction, and its telescopic end is fixedly connected to the press-fitting rod; The universal press-fitting head comprises a universal ball head, a pressing block and a connecting block, wherein the universal ball head is fixed to the lower end of the press-fitting rod, the connecting block is provided with a first through hole for the press-fitting rod to pass through, the pressing block is provided with a spherical groove, the universal ball head is rotatably connected to the spherical groove, and the pressing block is connected to the connecting block via a first threaded connector; The balance wheel seat positioning clamping assembly includes a clamp body and a clamping structure, the clamp body is provided with a positioning groove, the positioning groove includes a balance wheel positioning groove and a cylindrical part positioning groove, the cylindrical part 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 part positioning groove and is communicated with the cylindrical part positioning groove, the balance wheel positioning groove is adapted to the three balance wheels on the balance wheel seat, a supporting protrusion is fixedly provided at the center of the clamp body, the supporting protrusion is in contact with the lower surface of the bearing on the balance wheel seat, and the clamping structure clamps and fixes the balance wheel seat to the clamp body; The balance wheel seat positioning clamping assembly also includes an auxiliary positioning piece, which is movably arranged in the vertical direction at the center of the clamp body, a through groove for the auxiliary positioning piece to pass through is provided at the center of the supporting protrusion, a first reset elastic piece is provided on the clamp body to drive the auxiliary positioning piece to move upward, the auxiliary positioning piece is clearance-matched with the inner ring of the bearing on the balance wheel seat, and after the balance wheel seat is positioned in the positioning groove, the top surface of the auxiliary positioning piece maintains a distance from the upper surface of the inner ring of the bearing on the balance wheel seat; 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.

2. The eccentric cam assembly device of the three-cam balance wheel seat according to claim 1, characterized in that: The clamp body includes a first body, a second body, a third body and a fourth body which are arranged in sequence from bottom to top, the first body, the second body, the third body and the fourth body are connected by a second threaded connection member, the supporting protrusion is fixed to the third body, the second body is provided with a first slide groove section, the supporting protrusion is provided with a second slide groove section which is connected with the first slide groove section, the first slide groove section is connected with the second slide groove section to form a slide groove for the auxiliary positioning member to slide, the first reset elastic member is arranged in the slide groove, one end of which abuts against the bottom of the slide groove, and the other end abuts against the auxiliary positioning member, the first reset elastic member applies an elastic force pointing to the outside of the slide groove to the auxiliary positioning member, the supporting protrusion is located in the first slide groove section and is provided with a first limiting step portion, and the auxiliary positioning member is provided with a second limiting step portion which abuts against the first limiting step portion.

3. The eccentric cam assembly device of the three-cam balance wheel seat according to claim 1, characterized in that: The balance wheel seat positioning clamping assembly 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 assembly 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.

4. The eccentric cam assembly device of the three-cam balance wheel seat according to claim 3, characterized in that: The driving block is an abutment bearing, and the inner ring of the abutment bearing is fixed to the first clamping claw body.

5. The eccentric cam assembly device of the three-cam balance wheel seat according to claim 3 or 4, 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.

6. The eccentric cam assembly device of the three-cam balance wheel seat according to claim 5, characterized in that: A plurality of guide columns are vertically arranged on the workstation turntable, a guide sleeve is provided on the outer sliding sleeve of the guide column, the guide sleeve is fixed to the fixture body, and a second reset elastic member abutting against the bottom of the fixture body is arranged on the workstation turntable.

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