A double-station automatic assembly device for a rotary potentiometer

Abstract

A double-station automatic assembly device for a rotary potentiometer, having a machine table, on which a transmission device, a housing feeding device, a shaft core feeding device, a carbon film body feeding device and a riveting and forming device are arranged. Among them: the housing feeding device provides a housing with through holes opened at the bottom and both sides warped upward and formed with pins as workpieces to the transmission device; the shaft core feeding device transfers a shaft core having a cylinder corresponding to the through hole of the housing and an end portion with a diameter larger than that of the cylinder formed at the top of the cylinder onto the housing on the transmission device; the carbon film body feeding device transfers a carbon film body having pins on one side to the shaft core stacked on the housing in the transmission device for stacking; the riveting and forming device bends the pins formed on the housing towards the top surface of the carbon film body stacked thereon, so that the carbon film body is clamped within the housing and the shaft core is fixed. The present invention realizes full-process automatic production for the assembly process of the potentiometer without manual intervention.

Description

Technical Field

[0001] The present invention relates to the technical field of potentiometer production, and in particular to a double-station automatic assembly device for rotary potentiometers. Background Art

[0002] A rotary potentiometer is a type of variable resistor, usually composed of a resistive element and a rotating or sliding system, that is, a moving contact moves on the resistive element to obtain a partial resistance output. It has the function of adjusting the voltage and current, so it is widely used in electronic products.

[0003] The applicant is involved in a production activity of a rotary potentiometer as Figure 1 shown, which is assembled by a housing 810, a shaft core 820, and a carbon film body 830. As Figure 1 shown, the housing 810 made of metal material has a bottom with a through hole 811 opened, and at the same time, both sides 812 of the bottom are upturned and pins 813 are formed on the side. A space is formed between the two upturned sides 812 for installing the shaft core 820 and the carbon film body 830. The shaft core 820 has a cylinder 821 and an end 822 at the top of the cylinder 821, and the diameter of the end 822 is larger than that of the cylinder 821. When installing, the cylinder 821 of the shaft core 820 is passed through the through hole 811 at the bottom of the housing 810, so that the end 822 is located in the space between the two sides 812, and the carbon film body 830 is stacked on the end 822 of the shaft core 820. The pins 813 on both sides 812 of the housing 810 are bent relative to each other, so as to install the shaft core 820 and the carbon film body 830 on the housing 810; at the same time, there are pins 831 on the carbon film body 830 to facilitate the connection with the circuit board and other electronic components. When rotating the cylinder 821 of the shaft core 820 extending out of the housing 810, its resistance value is adjusted, thereby changing the magnitude of the current and voltage.

[0004] Moreover, according to different electronic products applied, the connection angle and method with the rotary potentiometer are also different, which results in processing the pins 831 on the carbon film body 830 to have a shape extending vertically or a state extending horizontally.

[0005] However, the applicant has found in practice that the assembly process of the potentiometer is rather complicated, the production cost is high depending on manual assembly, and the production efficiency is relatively low. Therefore, there is an urgent need for an efficient automatic device to meet the assembly process requirements of the potentiometer. Summary of the Invention

[0006] To meet the above requirements of the prior art, the present invention provides a dual-station automatic assembly device for a rotary potentiometer, and its technical solution is as follows.

[0007] A double-station automatic assembly device for a rotary potentiometer, which has a machine platform. The top surface of the machine platform provides a horizontal tabletop. It is characterized in that a transmission device, a housing feeding device, a shaft core feeding device, a carbon film body feeding device and a riveting and forming device are arranged above the tabletop of the machine platform. Among them: the housing feeding device provides a housing with a through hole opened at the bottom, and the two sides are upturned upward and formed with pins as a workpiece to the transmission device; the shaft core feeding device transfers a shaft core with a column corresponding to the through hole of the housing and an end portion with a diameter larger than the diameter of the column formed at the top of the column to the housing on the transmission device, and passes the column of the shaft core through the through hole of the housing so that the shaft core is stacked on the housing; the carbon film body feeding device transfers a carbon film body with pins on one side to the shaft core stacked on the housing in the transmission device and stacks it on the shaft core, and the carbon film body is stacked between the two upturned sides of the housing; the riveting and forming device bends the pins formed on the housing towards the top surface of the carbon film body stacked on it, so that the carbon film body is clamped inside the housing and the shaft core is fixed; the transmission device includes a turntable rotatably installed on the tabletop of the machine platform, and a plurality of equally spaced fixtures are installed on the top surface of the turntable along the circumferential direction. Through holes are opened in the fixtures, and two mutually parallel receiving grooves for receiving the housing are provided. Through holes corresponding to the through holes on the housing are coaxially opened at the bottom of the receiving grooves, so that when the shaft core column is stacked on the housing, it can extend into the through holes at the bottom of the receiving grooves; the housing feeding device, the shaft core feeding device, the carbon film body feeding device and the riveting and forming device are sequentially arranged beside the turntable along the rotation direction of the turntable, so that the rotation of the turntable drives the fixtures to sequentially flow through the stations corresponding to the housing feeding device, the shaft core feeding device, the carbon film body feeding device and the riveting and forming device; the housing feeding device includes a housing carrier, two mutually parallel housing slots for placing the housing are opened on the top surface of the housing carrier, a first manipulator, the first manipulator is fixedly installed on the tabletop of the machine platform beside the housing carrier, and it includes a first cantilever extending towards the turntable. A first pick-up head is slidably connected along the length direction of the first cantilever, and two pick-up ends corresponding to the housing slots respectively are arranged at the lower end thereof for sucking the housing located in the housing slots. A first air cylinder for driving the first pick-up head to reciprocate along the length direction of the first cantilever is also fixedly installed on the first cantilever;The shaft core feeding device includes a shaft core carrier, on the top surface of the shaft core carrier, there are two shaft core placement positions for placing the shaft core side by side, a second manipulator, the second manipulator is located beside the shaft core carrier and is fixedly installed on the table of the machine, and includes a second suspension beam extending to the turntable, a second material picking head is slidably connected to the second suspension beam along its length direction, and a shaft core pneumatic clamp is arranged at the lower end of the second suspension beam for clamping the shaft core located in the shaft core slot hole, and a second cylinder is fixedly installed on the second suspension beam for reciprocating the second material picking head along the length direction of the second suspension beam; the carbon film body feeding device includes a carbon film body feeding device, A film body carrier, the top surface of the carbon film body carrier is provided with two mutually parallel carbon film body placement positions for placing the shaft core, a third manipulator, the third manipulator is located beside the carbon film body carrier and is fixedly installed on the table of the machine, and comprises a third suspension beam extending to the turntable, a third material picking head is slidably connected to the third suspension beam along its length direction, and two carbon film body pneumatic clamps are arranged at the lower end thereof, which are respectively corresponding to the carbon film body placement positions and are used to clamp the carbon film body located in the shaft core slot hole, and a third cylinder is also fixedly installed on the third suspension beam for reciprocating the third material picking head along the length direction of the third suspension beam; The riveting forming device includes a vertical plate, the vertical plate is fixedly installed on the table top of the machine, a connecting rod, the middle position of the connecting rod is pivotally connected to the top of the vertical plate, and one end of the connecting rod extends toward the direction of the turntable, a clamping block, the clamping block is vertically slidably connected to one end of the vertical plate facing the turntable, and the clamping block is suspended above the turntable, and a riveting head corresponding to the two bearing grooves is formed at its lower end, the riveting head is formed with a riveting foot protruding downward and matching with the pins on the shell, the riveting foot is formed with a protruding portion protruding downward, and the bottom surface of the protruding portion and the protruding portion facing the inner side of the riveting head The side surface has an arc-shaped transition arc surface, and the upper part of the protruding part is formed with a clamping part extending toward the inner side of the riveting head, and the clamping part has a horizontal lower surface; the upper end of the clamping block is pivotally connected to the end of the connecting rod extending toward the turntable, and the hole on the connecting rod pivotally connected to the clamping block is a long slot hole opened along the length direction of the connecting rod, and the pushing cylinder is located on the side of the vertical plate away from the turntable and fixedly installed on the table of the machine, and its piston rod extending upward is pivotally connected to the end of the connecting rod away from the turntable, and the hole for pivotally connecting the connecting rod and the piston rod of the pushing cylinder is a long slot hole opened along the length direction of the connecting rod. ;

[0008] Further, the first material taking head includes a first mounting plate slidably connected to the first cantilever and driven by the first cylinder to reciprocate along the length direction of the first cantilever. A material taking block is slidably connected to the side surface of the first mounting plate along its vertical direction. Two sliding holes penetrating the material taking block and corresponding to the two shell slot holes respectively are arranged side by side along the vertical direction on the top surface of the material taking block. A material taking rod made of a magnetic material and forming a sliding pair with the sliding holes is sleeved in the two sliding holes. One end of the material taking rod extending out of the sliding hole and located on the lower side of the material taking block constitutes a material taking end for sucking the shell. A pulling cylinder is also fixedly installed at the top end of the material taking block. The pulling cylinder has a piston rod extending downward and is fixedly connected to one end of the material taking rod located on the top surface of the material taking block, so as to drive the material taking rod to reciprocate up and down in the sliding hole. A first telescopic cylinder for driving the material taking block to reciprocate up and down along the side surface of the first mounting plate is arranged on the first mounting plate to drive the material taking block to reciprocate along the side surface of the first mounting plate towards the shaft core carrier.

[0009] Further, the shell feeding device further has a shell feeding assembly. The shell feeding assembly includes a shell conveying plate and a shell vibrating disk for containing the shells and directly vibrating and conveying them out. Two mutually parallel conveying channels are arranged on the top surface of the shell conveying plate. One ends of the two conveying channels are connected to the shell slot holes on the shell carrier, and the other ends are communicated with the outlet of the shell vibrating disk, so as to directly vibrate and convey the shells into the shell slot holes. The shell conveying plate also has cover plates respectively corresponding to the two conveying channels and covering them above.

[0010] Further, two mutually parallel feeding tracks are provided on the core carrier table. The feeding tracks are recessed from the upper surface of the core carrier table and extend along the upper surface of the core carrier table towards the core placement position. Two docking tracks are provided side by side on the core carrier table and respectively communicate with the two feeding tracks; the core feeding device further includes a core vibrating disk for containing cores and vibrating them out linearly, and a conveying mechanism for pushing the cores conveyed by the core vibrating disk along the feeding track towards the core placement position, wherein: the core vibrating disk has a core conveying plate, and two core channels corresponding to the docking tracks are provided on the core conveying plate. One end of the core channel communicates with the outlet of the core vibrating disk, and the other end thereof overlaps with the docking track, so that the cores are conveyed from the core vibrating disk into the docking track; the conveying mechanism includes a conveying push plate disposed in the feeding track and a conveying cylinder. The conveying cylinder is fixedly installed on the core carrier table and its piston rod is connected to the conveying push plate to drive the conveying push plate to reciprocate along the feeding track towards the core placement position, so as to push the cores flowing to the intersection of the docking track and the feeding track to the core placement position.

[0011] Further, the core feeding device further includes an oiling mechanism for applying lubricating oil to the core. It is fixedly installed on the machine tabletop between the core carrier and the turntable. When the turntable drives the fixture to the position corresponding to the core feeding device, the oiling mechanism is located at the middle position between the core carrier and the fixture. The oiling mechanism includes: an oiling support part, which has an oiling telescopic cylinder fixedly installed on the machine tabletop. The piston rod extending upward from the oiling telescopic cylinder is fixedly connected to a vertical support plate and reciprocates in the up and down direction driven by the oiling telescopic cylinder; an oiling base fixedly installed on the support plate, and the top surface thereof has two oiling columns arranged side by side and rotatably fitted to the oiling base. An installation hole adapted to the core for installing the core therein is opened at the top of the oiling column; a rotating assembly for driving the oiling column to rotate on the oiling base, which includes a rack slidably connected to the back surface of the oiling base, and a gear meshing with the rack is fixedly installed at the bottom end of the oiling column. The rotating assembly further includes a driving cylinder fixedly installed on the oiling base and driving the rack to reciprocate on the oiling base, so as to drive the gear to rotate, and further drive the oiling column to rotate and cooperate with the oiling base; an oiling assembly, which includes two respectively located on both sides of the oiling base and corresponding to the two oiling columns. Each includes a side arm fixedly installed on the oiling base. One end of the side wall is fixedly installed on the oiling base, and the other end extends in a direction away from the oiling base; an oiling cylinder with a piston rod extending toward the oiling column is fixedly installed on the top surface of the side arm, and an oil injection needle is fixedly installed on the piston rod of the oiling cylinder.

[0012] Further, the second pick-up head includes a second mounting plate slidably connected to the second suspension beam and reciprocating along the length direction of the second suspension beam driven by the second cylinder. A pick-up seat is slidably connected to the second mounting plate in the vertical direction, and a second telescopic cylinder for driving the pick-up seat to reciprocate along the second mounting plate; there are two groups of core pneumatic clamps, and each group has two. The core pneumatic clamps in each group respectively correspond to the core slot holes for clamping the cores located in the core slot holes; the two groups of core pneumatic clamps are respectively installed on both sides of the pick-up seat, and the distance between the two groups of core pneumatic clamps is the same as the distance between the core carrier and the oiling mechanism.

[0013] Further, two mutually parallel and side-by-side conveying channels extending in the direction of the carbon film body placement position and communicating with each other are formed on the carbon film body carrier. The conveying channels are recessed on the surface of the carbon film body carrier to accommodate the carbon film body therein, and each conveying channel further has a side wall for blocking the pins of the carbon film body outside thereof; a pushing rod and a pushing cylinder for pushing the carbon film body in the conveying channel in the direction of the carbon film body placement position are further arranged on the carbon film body carrier. The pushing cylinder is fixedly installed on the carbon film body carrier, and its piston rod is fixedly connected to the pushing rod. The pushing rod extends into the conveying channel from the inlet of the conveying channel; a bending mechanism for bending the pins on the carbon film body upward is further arranged on the carbon film body carrier. The bending mechanism includes a pressing component for pressing the pins and a bending component for bending the pins upward. Specifically: The pressing component includes a pressing cylinder fixedly installed on the carbon film body carrier and located above the conveying channel. The pressing cylinder has a piston rod extending downward and fixedly connected with a pressing plate. The pressing plate corresponds to the side wall of the conveying channel and is pushed against by the driving of the pressing cylinder; The bending component includes a bending hole formed in the carbon film body carrier. The bending hole is located beside the side wall of the conveying channel, so that the downward projection of the pins of the carbon film body is within the range of the bending hole. A bending rod is inserted into the bending hole. When the bending rod moves upward, it is used to bend the pins of the shrapnel upward, and a cylinder is rotatably connected to the top end of the bending rod. The axis of rotation of the cylinder is parallel to the conveying direction of the conveying channel; The bending component further includes a bending cylinder fixedly installed on the lower surface of the carbon film body carrier and driving the bending rod to reciprocate in the vertical direction of the bending hole.

[0014] Further, a shaping mechanism for shaping the bent pins to be vertical is further configured on the carbon film body carrier. The shaping mechanism includes a stop block. The stop block is located downstream of the pressing component along the conveying direction of the conveying channel and is fixedly installed on the carbon film body carrier. The stop block has a stop block body located above the conveying channel. A baffle extending toward the side wall direction is formed on the side surface of the stop block body corresponding to the side wall of the conveying channel, and there is a gap for the pins of the carbon film body to pass through between the baffle and the top surface of the side wall; a shaping rod slidably connected to the top surface of the carbon film body carrier and corresponding to the baffle; a shaping cylinder fixedly installed on the carbon film body carrier, and its piston rod is fixedly connected to the shaping rod, for extending the shaping rod toward the baffle direction and pressing the upward-bent pins toward the baffle direction to make them vertical.

[0015] Further, a transfer channel is formed on the end face of the carbon film body carrier. The conveying direction of the transfer channel is perpendicular to that of the material conveying channel, and the transfer channel intersects and communicates with the material conveying channel at the inlet of the material conveying channel. The carbon film body feeding device further includes a carbon film body feeding mechanism for holding the carbon film body and conveying it onto the carbon film body carrier. The carbon film body feeding mechanism includes a transfer assembly that penetrates into the transfer channel and reciprocates therein, and a carbon film body vibrating disk that communicates with the transfer assembly and is used to transfer the carbon film body onto the transfer assembly. The transfer assembly includes a transfer plate disposed within the transfer channel. The top end of the transfer plate is provided with transfer slots for accommodating the carbon film body. The cross-section of the transfer slots is the same as that of the material conveying channel. There are two transfer slots, which respectively correspond to the two material conveying channels. The transfer assembly further includes a transfer air cylinder fixedly installed on the carbon film body carrier. The piston rod of the transfer air cylinder is fixedly connected to the transfer plate to drive the transfer plate to reciprocate within the transfer channel. The carbon film body vibrating disk is fixedly installed on the machine table surface. It includes a carbon film body conveying plate, on which two carbon film body channels corresponding to the transfer slots are formed. One end of the carbon film body channel communicates with the outlet of the carbon film body vibrating disk, and the other end thereof abuts against the side surface of the transfer channel and communicates with the transfer channel.

[0016] Further, a detection device is fixedly installed above the tabletop of the machine. There are three detection devices, which are respectively located on the downstream sides of the outer shell feeding device, the shaft core feeding device, and the carbon film body feeding device along the rotation direction of the turntable. The three detection devices include: a detection vertical plate, which is fixedly installed above the tabletop of the machine, and a detection cylinder is fixedly installed thereon. The detection cylinder has a piston rod that can telescopically move in the vertical direction; a detection cross beam, one end of which is fixedly connected to the piston rod of the detection cylinder and is driven by it to move in the vertical direction. The other end extends towards the turntable and hangs above the turntable; a detection base, which is fixedly installed on the end of the detection cross beam extending towards the turntable. When the turntable drives the jig to rotate to the detection position, the detection base is correspondingly located above the jig. A detection hole corresponding to the bearing groove on the jig is opened at the bottom end of the detection base. A detection column that forms a sliding pair with it is inserted into the detection hole. Two limiting grooves respectively corresponding to the detection hole are also opened on the detection base. The limiting grooves are long strip-shaped holes arranged along the axial direction of the detection hole, which communicate the detection hole with the outside; a limiting rod is also configured on the detection column. One end of the limiting rod passes through the limiting groove and is fixedly connected to the end of the detection column extending into the detection hole, and the other end is outside the limiting groove, so that the detection column reciprocally moves in the length direction of the limiting groove; a photoelectric switch is also installed on the detection base, and the probe of the photoelectric switch is located at the upper section position of the limiting groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: It realizes fully automated production, without manual intervention, greatly reduces the labor intensity, has high production efficiency, and effectively guarantees the product quality.

[0018] Next, the present invention will be further described in conjunction with the accompanying drawings of the specification and the specific embodiments. Description of the Drawings

[0019] Figure 1 It is a structural schematic diagram of the rotary potentiometer involved in the present invention.

[0020] Figure 2 It is an exploded structural schematic diagram of the rotary potentiometer involved in the present invention.

[0021] Figure 3 It is a structural schematic diagram of the rotary potentiometer involved in the present invention with the pins of the carbon film body not bent.

[0022] Figure 4 It is a structural schematic diagram of the present invention.

[0023] Figure 5 It is a top view of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the jig in the present invention.

[0025] Figure 7 It is a schematic structural diagram of the outer shell feeding device in the present invention after removing the outer shell vibrating disk.

[0026] Figure 8 It is an exploded structural diagram of the first pick-up head in the present invention.

[0027] Figure 9 It is a schematic structural diagram of the riveting and forming device in the present invention.

[0028] Figure 10 It is an exploded structural diagram of the riveting and forming device in the present invention.

[0029] Figure 11 It is Figure 10 The partial enlarged view at position B in

[0030] Figure 12 It is a schematic structural diagram of the shaft core feeding device in the present invention.

[0031] Figure 13 It is a schematic structural diagram of the shaft core vibrating disk and the conveying mechanism in the shaft core feeding device of the present invention.

[0032] Figure 14 It is a schematic structural diagram of the shaft core feeding device in the present invention after removing the shaft core vibrating disk and the conveying mechanism.

[0033] Figure 15 It is a schematic structural diagram of the second manipulator in the present invention.

[0034] Figure 16 It is a schematic structural diagram of the shaft carrier and the conveying mechanism in the present invention.

[0035] Figure 17 It is a schematic structural diagram of the oiling mechanism in the present invention.

[0036] Figure 18 It is a schematic structural diagram of the carbon film body feeding device in the present invention.

[0037] Figure 19 It is a schematic structural diagram of the carbon film body feeding device in the present invention after removing the negotiation feeding mechanism.

[0038] Figure 20 It is an exploded structural diagram of the bending mechanism in the present invention.

[0039] Figure 21 It is Figure 20 The partial enlarged schematic diagram in

[0040] Figure 22It is a schematic explosion structure diagram of the quasi-transport component and the carbon film body stage in the present invention.

[0041] Figure 23 It is a schematic structure diagram of the detection device in the present invention.

[0042] Figure 24 It is a schematic explosion structure diagram of the detection device in the invention. Specific embodiments

[0043] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] It should be noted that in the embodiments of the present invention, all directional indicators (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicators will also change accordingly.

[0045] In addition, the descriptions of "first", "second", etc. set in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

[0046] A knob potentiometer double-station automatic assembly device disclosed in the embodiments of the present invention is used to assemble potentiometers. As Figure 4-5 shown, a knob potentiometer double-station automatic assembly device has a machine table 001. Above the top surface of the machine table 001, a horizontal tabletop is provided. At the same time, a transmission device 100, a housing feeding device 200, a shaft core feeding device 300 and a riveting and forming device 500 are installed above the tabletop of the machine table 001, wherein: the housing feeding device 200 provides a housing with through holes opened at the bottom and two sides upturned and formed with pins as a workpiece to the transmission device 100 as Figure 1-2 shown; the shaft core feeding device 300 transfers a shaft core with a column corresponding to the through hole of the housing and an end portion with a diameter larger than the diameter of the column formed at the top of the column to the housing on the transmission device 100, and passes the column of the shaft core through the through hole of the housing to install it on the housing; the carbon film body feeding device 400 transfers a carbon film body with pins on one side to the shaft core stacked on the housing in the transmission device 100 and stacks it thereon, and the carbon film body is stacked between the two upturned sides of the housing, so as to assemble an assembly of a knob potentiometer as Figure 1-2 shown; the riveting and forming device 500 is used for Figure 3 shown; the carbon film body feeding device 400 transfers a carbon film body with pins on one side to the shaft core stacked on the housing in the transmission device 100 and stacks it thereon, and the carbon film body is stacked between the two upturned sides of the housing, so as to assemble an assembly of a knob potentiometer as Figure 1 shown; the riveting and forming device 500 willFigure 1 The assembled body of the rotary potentiometer shown is subjected to riveting and forming. It is to bend the pins on the outer shell towards the top surface of the carbon film body stacked thereon, so that the carbon film body is clamped within the outer shell and the shaft core is clamped, thus Figure 1 The assembled body shown is fixedly assembled and completed.

[0047] As Figure 4-6 shown, the transmission device 100 includes a turntable 101 rotatably mounted on the tabletop of the machine table 001, and a plurality of fixtures 110 are fixedly mounted on the top surface of the turntable 101 at regular intervals along the circumferential direction. As Figure 6 shown, a loading groove for receiving and placing the outer shell is formed on the top surface of the fixture 110, and a through hole 112 corresponding coaxially to the through hole on the bottom of the outer shell is formed on the bottom of the loading groove, so that when the shaft core is in the direction of the outer shell, the column body of the shaft core can be inserted into the through hole of the outer shell and the through hole 112 of the bearing groove 111; the outer shell feeding device 200, the shaft core feeding device 300, the carbon film body feeding device 400 and the riveting and forming device 500 are sequentially arranged beside the turntable 101 along the rotation direction of the turntable 101, so that the rotation drives the fixture 110 to flow through the stations corresponding to the outer shell feeding device, the shaft core feeding device 300, the carbon film body feeding device 400 and the riveting and forming device 500 in sequence, so as to facilitate the operation and processing of the workpieces located on the fixture 110 respectively.

[0048] As Figure 1-2 shown in FIGS. 6 and 7, the outer shell feeding device 200 is used for conveying the outer shell. It includes an outer shell carrier 210, and an outer shell slot hole 211 for placing the outer shell is formed on the top surface of the outer shell carrier 210; it also has a first manipulator 220, and the first manipulator 220 is used to transfer the outer shell located on the outer shell carrier 210 to the fixture 110 and install it in the bearing groove 111 on the fixture 110. As Figure 7As shown in the figure, the first manipulator 220 is fixedly installed on the tabletop of the machine 001 beside the housing carrier 210. It includes a first cantilever 221 that extends towards the turntable 101 and is located above the turntable 101. A first pick-up head 230 is slidably connected to the first cantilever 221. And below the first pick-up head 230, there are two suction devices respectively corresponding to the housing slots 211 for sucking the housing located within the housing slots 211. At the same time, a first cylinder 224 for driving the first pick-up head 230 to reciprocate along the length of the first crossbeam is fixedly installed on the first cantilever 221. The first pick-up head 230 moves along the length direction of the first crossbeam under the drive of the first cylinder 224, and thus moves above the turntable 101. When the turntable 101 rotates the fixture 110 to the position below the first crossbeam, the first pick-up head 230 loads the sucked housing into the loading slot 111 of the fixture 110, completing the work of transferring the housing onto the fixture 110.

[0049] The shaft core feeding device 300 is used to pick up the shaft core and then place it on the fixture 110 with the housing installed, and stack it with the housing so that the column of the shaft core passes through the through hole of the housing and the through hole 112 at the bottom of the loading slot 111, thereby placing the shaft core on the housing. Please refer to Figure 12-13 Figs. 15 and 16, the shaft core feeding device 300 includes a shaft core carrier 310, and on the top surface of the shaft core carrier 310, there are two mutually parallel shaft core placement positions 311 for placing the shaft core; at the same time, it also includes a second manipulator 320 for transferring the shaft core installed on the shaft core carrier 310 onto the fixture 110. As Figure 12 shown in the figure, the second manipulator 320 is fixedly installed on the tabletop of the machine 001 beside the shaft core carrier. It includes a second cantilever 321 that extends towards the turntable 101, and it is suspended above the turntable 101. A second pick-up head 330 is slidably connected along the length direction of the second cantilever 321, and at the lower end of the second pick-up head 330, there is a shaft core pneumatic clamp 331 for clamping the shaft core. At the same time, a second cylinder 324 for driving the second pick-up head 330 to reciprocate along the length direction of the second cantilever 321 is fixedly installed on the second cantilever 321. The second pick-up head 330 moves along the second cantilever 321 towards the turntable 101 under the drive of the second cylinder 324. At the same time, the turntable 101 drives the fixture 110 loaded with the housing at the housing feeding device 200 towards the second manipulator 320 and makes it located below the second cantilever 321. When the second pick-up head 330 moves above the turntable 101, it places the shaft core clamped by the shaft core carrier 310 on the fixture 110 with the housing installed, and passes the column of the shaft core through the through hole of the housing and the through hole 112 at the bottom of the loading slot 111, thereby completing the assembly work of the shaft core and the housing.

[0050] The carbon film body loading device 400 is used to clamp the carbon film body and then transfer it onto the jig 110, and stack it on the shaft core installed on the housing, so as to assemble an assembly of a knob potentiometer as shown in Figure 1 As shown in Figure 4-5 , Figures 18 - 19. The carbon film body loading device 400 includes a carbon film body carrier 410, and two carbon film body placement positions 411 arranged side by side are opened on its top surface for loading the carbon film body; a third manipulator 420 fixedly installed on the tabletop of the machine table 001 is also provided beside the carbon film body carrier 410, which is used to clamp the carbon film body loaded on the carbon film body carrier 410 and then transfer it onto the jig 110, so that it is stacked relative to the shaft core. It includes a third suspension beam 421, the third suspension beam 421 is fixedly installed on the tabletop of the machine table 001 and one end thereof extends towards the turntable 101, hanging above the turntable 101, and a third pick-up head 430 is slidably connected along the length direction of the third suspension beam 421. Two carbon film body pneumatic clamps 431 corresponding to the carbon film body placement positions 411 are arranged at its lower end. At the same time, a third air cylinder 424 for driving the third pick-up head 430 to reciprocate along the length direction of the third cross beam is also fixedly installed on the third suspension beam 421, so as to drive the third pick-up head 430 to move towards the turntable 101 and be located above the turntable 101, so as to stack the clamped carbon film body on the shaft core, thus completing the work of stacking the carbon film body.

[0051] The riveting and forming device 500 is used to rivet and form the housing, shaft core, and carbon film body stacked on the jig 110 so that they are clamped and assembled into an assembly of a knob potentiometer as shown in Figure 1 As shown. Specifically, the pins on both sides of the housing are bent towards the top position of the carbon film body stacked on it, and the bent pins are pressed against the top surface of the carbon film body, so as to fix the carbon film body on the housing and clamp the carbon film body between the housing and the carbon film body, realizing the assembly into an assembly as shown in Figure 1 As shown. Figure 9-11As shown, the riveting and pressing forming device 500 includes a vertical plate 501 fixedly installed on the table top of the machine table 001, the middle part of the connecting rod 502 is pivotally connected to the top of the vertical plate, and one end of the connecting rod 502 extends toward the turntable 101, and a clamping block 503 is slidably connected to the side of the vertical plate 501 facing the turntable 101 along the up and down directions. The clamping block 503 is suspended above the turntable 101 under the restriction of the vertical plate 501. At the same time, a riveting head 510 is formed at the lower end of the clamping block 503, which protrudes downward and corresponds to the bearing groove 111, so as to rivet the outer shell, the shaft core and the carbon film body respectively installed in the two bearing grooves 111. The bottom of the riveting head 510 is formed with a riveting foot 511 protruding downward and corresponding to the pin on the outer shell, and the riveting foot 511 is formed with an extending portion 512 extending downward. The extending portion The bottom surface of 512 and the side surface facing the inner side of the riveting head 510 have an arc-shaped transition arc surface 514, and a clamping portion 513 extending toward the inner side of the riveting head 510 is formed on the upper part of the protruding portion 512, and the clamping portion 513 has a horizontal lower surface; at the same time, the upper end of the clamping block 503 is pivoted to the end of the connecting rod 502 extending toward the turntable 101, and at the same time, the hole on the connecting rod 502 pivoted to the clamping block 503 is a long slot hole opened along the length direction of the connecting rod 502; and the riveting forming device 500 also includes a pushing cylinder 504, which is fixedly mounted on the side of the vertical plate 501 away from the turntable 101 and fixedly mounted on the table 001, and its piston rod extending upward is pivoted to the other end of the connecting rod 502, and at the same time, the hole for pivoting the connecting rod 502 and the piston rod is a long slot hole opened along the length direction of the connecting rod 502. Under the action of the push cylinder 504, a point of the connecting rod 502 is raised upward, and at the same time, the connecting rod 502 swings with the bottom plate pivoted to the middle of the connecting rod 502 as a fulcrum, so that the connecting rod 502 swings downward toward one end of the turntable 101, thereby moving the clamping block 503 toward the jig 110 driven by the turntable 101 and located below the clamping block 503, so as to clamp the shell, the shaft core, and the carbon film body loaded on the bearing groove 111 of the jig 110. Specifically, the bottom surface of the extension part 512 on the riveting foot 511 touches the pin extending upward from the shell, and the pin is The transition arc surface 514 of the extension portion 512 is bent toward the inner side of the shell under the sliding, that is, the top surface of the carbon film body installed on the shell is bent, and in the process of the pressing block 503 continuously pressing downward, the pin is continuously bent toward the inner side of the shell, and when the pressing portion 513 contacts the bent pin, the lower surface of the pressing portion 513 presses the pin onto the top of the carbon film body inside the shell, so that the shell clamps the carbon film body on the shell, and at the same time, the shaft core is installed between the shell and the carbon film body, so that the shell, the shaft core and the carbon film body are riveted and assembled into Figure 1 The knob potentiometer shown.

[0052] As Figure 4-5 shown, above the tabletop of the machine 001, there is also a blanking device 700, which is used to pick up and blank the potentiometers that have been riveted and formed on the fixture 110. It includes a blanking manipulator 701 for picking up the potentiometers located on the fixture 110 and placing them on the blanking plate 702 for centralized collection.

[0053] In the embodiment, to ensure the feeding smoothness and automation degree of the housing feeding device 200, a housing feeding component 240 is further configured on the housing feeding device 200. As Figure 4 、 7 shown, the housing feeding component 240 includes a housing conveying plate 241 and a housing vibrating bowl 242. The housing vibrating bowl 242 is used to hold the housings and convey them out by linear vibration; on the top surface of the housing conveying plate 241, there are two parallel conveying channels 243. One end of the two conveying channels 243 is connected to the housing slot 211 of the housing carrier 210, and the other end is communicated with the outlet of the housing vibrating bowl 242, so that the housings conveyed out by the housing vibrating bowl 242 flow into the conveying channels 243 and are then transferred into the housing slot 211 through the conveying channels 243. At the same time, on the housing conveying plate 241, there are cover plates 244 corresponding to the two conveying channels 243 respectively. The cover plates 244 are used to cover the conveying channels 243 to prevent the housings located in the conveying channels 243 from falling out of the conveying channels 243 during the conveying process. Especially when the first manipulator 220 sucks the housings located in the housing slot 211, it can prevent the situation that the housings close to the housings located in the housing slot 211 and also located in the conveying channels 243 are taken out together. As Figure 8As shown, the first material taking head 230 reciprocates along the length direction of the first suspension beam 221 under the drive of the first cylinder 224, so as to realize sucking the housing located within the housing slot 211 and then placing it on the jig 110. The first material taking head 230 includes a first mounting plate 232 slidably connected to the first suspension beam 221 and driven by the first cylinder 224. A material taking block 233 is slidably connected to the first mounting plate 232 in the vertical direction. Two sliding holes 234 corresponding to the housing slot 211 and penetrating the material taking block 233 are arranged side by side on the material taking block 233. At the same time, material taking rods 235 made of magnetic material and forming a sliding pair with the two sliding holes 234 penetrate through the two sliding holes 234. The part of the material taking rod 235 extending out of the sliding hole 234 and located at the lower end of the material taking block 233 constitutes a material taking end 231 for sucking the housing. A pulling cylinder 236 is fixedly connected to a section of the material taking rod 235 located at the upper end of the material taking block 233. The pulling cylinder 236 drives the material taking rod 235 to reciprocate in the sliding hole 234 in the up and down direction. At the same time, a first telescopic cylinder 237 for driving the material taking block 233 to reciprocate in the up and down direction along the first mounting side is also fixedly installed on the first mounting plate 232, so as to drive the material taking block 233.

[0054] When sucking the housing located on the housing carrier 210, the first cylinder 224 drives the first material taking head 230 above the housing carrier 210. Under the drive of the first telescopic cylinder 237, the material taking block 233 moves towards the housing carrier 210, so that the material taking rod 235 made of magnetic material attracts and adsorbs the housing located within the housing slot 211. At this time, the first telescopic cylinder 237 lifts the material taking block 233, so as to move the housing out of the housing carrier 210. Since the material taking rod 235 is made of magnetic material, when the material taking rod 235 approaches the housing located on the housing carrier 210, under the action of magnetic force, the housing located in the housing slot 211 and the housing located in the conveying channel 243 and close to it are also attracted. When the first telescopic cylinder 237 drives the material taking block 233 to rise, the housing located in the conveying channel 243 will also be lifted. At this time, the cover plate 244 restricts the housing located in the conveying channel 243 to prevent it from being lifted together.

[0055] When the first manipulator 220 sucks the housing above the housing stage 210, the first cylinder 224 drives the first material-taking head 230 to move above the turntable 101. At the same time, the turntable 101 drives the jig 110 to move below the first cantilever 221 to facilitate the transfer of the sucked housing into the loading groove 111 of the jig 110. Specifically, the first telescopic cylinder 237 moves the material-taking block 233 downward to continuously approach the jig 110 until the housing on the material-taking rod 235 is placed in the loading groove 111. At this time, the pulling cylinder 236 pulls the material-taking rod 235 to slide upward along the sliding hole 234. During the upward sliding process, the housing attracted by the material-taking block is peeled off on the material-taking rod 235, and the housing is loaded onto the jig 110, thus completing the feeding work of the housing, and the feeding method is simple and reliable.

[0056] In the embodiment, as Figure 12-13As shown in FIGS. 16, two mutually parallel feeding tracks 312 are provided on the core carrier 310. The feeding tracks 312 are recessed in the upper surface of the core carrier 310 and extend towards the core placement position 311 and are respectively communicated with the core placement position 311. At the same time, two mutually parallel docking tracks 313 that intersect and communicate with the two feeding tracks are also provided on the core carrier 310. At the same time, to improve the working continuity of the core feeding device 300, the core feeding device 300 further includes a core vibrating disk 340 for containing cores and outputting them, and a conveying mechanism 250 for dragging the cores to the core placement position 311. Among them, the core vibrating disk 340 is used to contain cores, and it includes a core conveying plate 341. Two mutually parallel core channels 342 are provided on the core conveying plate 341. One end of the core channel 342 is communicated with the outlet of the core vibrating disk 340, and the other end thereof is lapped with the docking track 313, so that the core vibrating disk 340 and the docking track 313 are connected through the core channel 342, so that the cores directly vibrated and output by the core vibrating disk 340 flow into the docking channel after passing through the core channel 342 and flow to the intersection of the docking channel and the feeding channel. The conveying mechanism 250 includes a conveying push plate 351 and a conveying cylinder 352 for driving the conveying push plate 351. Among them, the conveying push plate 351 penetrates into the feeding track 312, and the conveying cylinder 352 is fixedly installed on the core carrier 310, and its piston rod is connected to the conveying push plate 351, so as to drive the conveying push plate 351 to move along the length direction of the feeding channel. When the cores output by the core vibrating plate are conveyed into the docking track 313 through the core channel 342 and flow to the intersection of the docking track 313 and the feeding track 312, at this time, the conveying cylinder 352 will drive the conveying push plate 351 to move towards the core placement position 311 in the feeding track 312, so as to push the cores located at the intersection of the docking track 313 and the feeding track 312 onto the core placement position 311, so as to facilitate the second manipulator 320 to grab. Since when the conveying push plate 351 moves on the feeding track 312 and pushes the cores towards the core placement position 311, the side surface of the conveying push plate 351 seals the opening position where the docking track 313 intersects with the conveying track, so that the cores can be conveyed to the core placement position 311 one by one, and it is avoided that during the process of clamping the cores located on the core carrier 310, it will interfere with the adjacent cores, thus interfering with the grabbing work of the cores located on the core placement position 311.

[0057] In the embodiment, the rotary potentiometer changes the resistance value by rotating the core. Therefore, to facilitate the rotation of the rotary potentiometer, it is necessary to pre-coat the core with lubricating oil during the assembly production process, so that after it is assembled with the outer shell and the carbon film body, it can rotate smoothly. AsFigure 14 , 17 As shown in 17 , there is also an oiling mechanism 360 above the shaft core loading device 300, which is used to coat lubricating oil on the column of the shaft core. Among them, the oiling mechanism 360 is fixedly installed on the tabletop of the machine table 001 and is located between the shaft core carrier 310 and the turntable 101. When the turntable 101 drives the jig 110 to move to the position corresponding to the shaft core loading device 300, the oiling mechanism 360 is located at the middle position between the shaft core carrier 310 and the jig 110. As Figure 17 shown in Figure 17 , the oiling mechanism 360 has an oiling support part 361. The support part has an oiling telescopic cylinder 362 fixedly installed on the tabletop of the machine table 001. A vertically arranged support plate 363 is fixedly connected to the piston rod extending upward therefrom. It is driven by the oiling telescopic cylinder 362 to reciprocate in the up and down direction; an oiling base 364 is fixedly installed on the support plate 363. An oiling column 365 rotatably fitted to the top surface of the oiling base 364 is provided on the top surface of the oiling base 364. There are two oiling columns 365 arranged side by side. An installation hole 366 for the shaft core to be installed therein is provided on the top of the oiling column 365; the oiling mechanism 360 has a rotating component for driving the oiling column 365 to rotate on the oiling base 364. It includes a rack 368 slidably connected to the back surface of the oiling base 364. A gear 369 meshing with the rack 368 is fixedly installed at the bottom end of the oiling column 365. At the same time, the rotating component further includes a driving cylinder 367 fixedly installed on the oiling base 364 and connected to the rack 368 to drive the rack 368 to reciprocate linearly. Driven by the driving cylinder 367, the rack 368 reciprocates linearly, thereby driving the oiling column 365 provided with the gear 369 to rotate; at the same time, the oiling mechanism 360 also has an oiling component 370 for oiling the shaft core installed on the oiling column 365. The oiling component 370 includes two respectively fixedly installed on both sides of the oiling base 364 and corresponding to the two oiling columns 365 respectively, and is used to simultaneously perform oiling processing on the shaft cores on the two oiling columns 365. Among them, the oiling component 370 includes a side arm 371 fixedly installed on the oiling base 364. One end of the side arm 371 is fixedly installed with the oiling base 364 and the other end extends in a direction away from the oiling base 364. An oiling cylinder 372 is fixedly installed on the top surface of the side arm 371. An oil injection needle 373 is fixedly connected to the piston rod of the oiling cylinder 372 extending toward the oiling column 365. One end of the oil injection needle 373 is connected to an oil barrel, so that the lubricating oil can flow out from the end of the oil injection needle 373.

[0058] During the oiling process, the oiling cylinder 372 moves the oil injection needle 373 towards the oiling column 365, causing the oil injection needle 373 to move above the top surface of the oiling column 365 and come into contact with the circumferential surface of the column body of the upper shaft core. At the same time, the piston rod of the driving cylinder 367 extends, driving the rack 368 to move, and then driving the oiling column 365 to rotate on the oiling base 364. At this time, during the outflow of the lubricating oil at the end of the oil injection needle 373, the oiling column 365 drives the shaft core mounted on it to rotate, so that the lubricating oil is evenly coated on the circumferential surface of the shaft core. At the same time, the oiling base 364 is fixedly installed on the support plate 363 driven by the oiling telescopic cylinder 362 to move in the up and down direction, so that the oiling base 364 can have a lifting action under the action of the oiling telescopic cylinder 362. This design is to meet the need for convenient height position switching during the oiling process of different models of shaft cores, so as to adapt to the oiling process of different models of shaft cores.

[0059] As Figure 15 shown, in order to more efficiently pick up the shaft cores located on the shaft core carrier 310 and the oiling mechanism 360 respectively, the second pick-up head 330 includes a second mounting plate 332 slidably connected to the second suspension beam 321. The second mounting plate 332 is connected to the piston rod of the second cylinder 324, so as to realize reciprocating movement along the length direction of the second suspension beam 321 under the drive of the second cylinder 324. A pick-up seat 333 is slidably connected to the second mounting plate 332 in the vertical direction and a second telescopic cylinder 334 fixedly installed on the second mounting plate 332. The second telescopic cylinder 334 is connected to the pick-up seat 333 to drive the pick-up seat 333 to reciprocate along the second mounting. There are two sets of shaft core pneumatic clamps 331, and each set has two. The two sets of shaft core pneumatic clamps 331 are respectively fixedly installed on both sides of the pick-up seat 333, and the spacing distance between the two sets of shaft core pneumatic clamps 331 is the same as the spacing between the shaft core carrier 310 and the oiling mechanism 360. And each shaft core pneumatic clamp 331 in each set corresponds to the shaft core slot respectively, so as to facilitate sucking the shaft core in the shaft core slot.

[0060] During the process of sucking and installing the shaft core, since there are two sets of shaft core pneumatic clamps 331 for clamping the shaft core, the shaft cores can be picked up on the shaft core carrier 310 at the same time and placed on the oiling column 365, so that the shaft cores can be grabbed and placed more efficiently.

[0061] As Figure 18-21As shown in the figure, two mutually parallel and side-by-side material transportation channels 412 are provided on the carbon film body stage 410. The material transportation channels 412 extend towards the carbon film body placement position 411 and are communicated with it. They are recessed downward along the surface of the carbon film body stage 410 and are used to accommodate the carbon film body inside. At the same time, a side wall 413 is also provided above the material transportation channels 412. The side wall 413 is used to block the pins of the carbon film body so that they are located outside the material transportation channels 412. When the carbon film body is located inside the material transportation channels 412, the pins of the carbon film body are blocked by the side wall 413, rest on the top of the side wall 413, and extend outward from the material transportation channels 412. At this time, the main body of the carbon film body is installed inside the material transportation channels 412; in order to transport the carbon film body to the carbon film body placement position 411, a push rod 414 and a push cylinder for pushing the carbon film body in the material transportation channels 412 towards the carbon film body placement position 411 are also installed on the carbon film body stage 410. The push cylinder is fixedly installed on the carbon film body stage 410, and its piston rod is fixedly connected to the push rod. The push rod extends into the material transportation channels 412 from the inlet of the material transportation channels 412 and reciprocates along the material transportation channels 412 under the push of the push cylinder, so as to push the carbon film body placed therein towards the carbon film body placement position 411 and push it onto the carbon film body placement position 411.

[0062] At the same time, as Figure 19-21 shown, a bending mechanism 470 is also configured on the carbon film body stage 410 for bending the pins of the carbon film body upward. The bending mechanism 470 includes a pressing component 471 for pressing the pins of the carbon film body and a bending component 472 for bending the pins upward, where: as Figure 20As shown, the pressing assembly 471 includes a pressing cylinder 4711 fixedly installed above the carbon film body stage 410 and above the material conveying channel 412. The pressing cylinder 4711 has a piston rod extending downward and fixedly connected to a pressing plate 4712. The pressing plate 4712 corresponds to the side wall 413 of the material conveying channel 412 and is pushed against by the driving of the pressing cylinder 4711; the bending assembly 472 includes a bending hole 4721 formed in the carbon film body stage 410. The bending hole 4721 is located beside the side wall 413 of the material conveying channel 412, so that the downward orthographic projection of the pins of the carbon film body is within the range of the bending hole 4721. A bending rod 2722 is inserted into the bending hole 4721. During the upward movement of the bending rod 2722, it is used to bend the pins of the elastic sheet upward. The top of the bending rod 2722 is also rotatably connected to a cylinder 4723. The axis of rotation of the cylinder 4723 is parallel to the conveying direction of the material conveying channel 412; the bending assembly 472 further includes a bending cylinder 4724 fixedly installed on the lower surface of the carbon film body stage 410 and driving the bending rod 2722 to reciprocate up and down along the bending hole 4721. The bending rod 2722 rises in the bending hole 4721 under the driving of the bending cylinder 4724, so as to push up the pins corresponding to the bending hole 4721 upward.

[0063] When bending the pins, the pressing cylinder 4711 moves the pressing plate 4712 towards the side wall 413, so that it presses the pins against the top surface of the side wall 413 of the material conveying channel 412. At this time, the bending cylinder 4724 raises the bending rod 2722, so as to periodically bend the pins opposite to the bending hole 4721 upward. At the same time, since the top of the bending rod 2722 is rotatably connected to the cylinder 4723, when the bending rod 2722 rises to bend the pins, the cylinder 4723 rotatably connected to the top of the bending rod 2722 contacts the pins, so that the pins can be smoothly pushed up, thus realizing bending them upward.

[0064] As Figure 20-21As shown, a shaping mechanism 440 for shaping the bent pins into a vertical direction is further installed on the carbon film body stage 410. The shaping mechanism 440 includes a stop block 441 fixedly installed on the carbon film body stage 410. The stop block 441 is located downstream of the pressing assembly 471 along the conveying direction of the material conveying channel 412. It has a stop block 441 body, and a baffle 442 corresponding to the side wall 413 of the material conveying channel 412 is formed on the sugar block body. There is a gap for the pins of the carbon film body to pass between the baffle 442 and the top surface of the side wall 413, so that it can pass smoothly when the carbon film body is pushed towards the carbon film body placement position 411. At the same time, the shaping mechanism 440 includes a shaping rod 443 and a shaping cylinder 444 connected to the shaping rod 443 for driving the shaping rod 443 to reciprocate linearly. The shaping rod 443 is slidably connected to the top surface of the carbon film body stage 410 and corresponds to the baffle 442. The shaping cylinder 444 is fixed on the carbon film body stage 410. Its piston rod extends towards the baffle 442 and is fixedly connected to the shaping rod 443, so as to reciprocate the shaping rod 443 along the top surface of the carbon film body stage 410 towards the baffle 442. During the process of the shaping cylinder 444 pushing the shaping rod towards the baffle 442, the end of the shaping rod 443 bends the upward-bent pins towards the baffle 442 and presses them against the baffle 442, so as to shape them into a vertical direction.

[0065] As Figure 18 , 21 -22 shows that a transfer channel 416 is further opened on the end face of the carbon film body stage 410. The conveying direction of the transfer channel 416 is perpendicular to the conveying direction of the material conveying channel 412, and the transfer channel 416 and the material conveying channel 412 intersect and communicate with each other at the inlet of the material conveying channel 412.

[0066] And to increase the conveying continuity of the carbon film body feeding device 400, it further includes a carbon film body feeding mechanism 450. The carbon film body feeding mechanism 450 includes a device for loading and conveying the carbon film body onto the carbon film body stage 410. As Figure 18 shown, the carbon film body feeding mechanism 450 includes a transfer component 451 that penetrates into the transfer channel 416 and reciprocates therein, and a carbon film body vibrating disk 452 that communicates with the transfer component 451 for transferring the carbon film body onto the transfer component 451. As Figure 22As shown in the figure, the transfer component 451 includes a transfer plate 4511 disposed within the transfer channel 416. At the top of the transfer plate 4511, there is a transfer slot 4512 for accommodating the carbon film body. The cross-section of the transfer slot 4512 is the same as that of the material transport channel 412. There are two transfer slots 4512, which respectively correspond to the two material transport channels 412. The transfer component 451 further includes a transfer cylinder fixedly installed on the carbon film body carrier 410. The piston rod of the transfer cylinder is fixedly connected to the transfer plate 4511 to drive the transfer plate 4511 to reciprocate within the transfer channel 416. The carbon film body vibrating disk 452 is fixedly installed on the tabletop of the machine tool 001. It includes a carbon film body conveying plate 4521, on which there are two carbon film body channels 4522 corresponding to the transfer slots 4512. One end of the carbon film body channel 4522 is communicated with the outlet of the carbon film body vibrating disk 452, and the other end is lapped on the side of the transfer channel 416 and communicated with the transfer channel 416.

[0067] During use, the carbon film body is conveyed by the carbon film body vibrating disk 452 along the carbon film body channel 4522 to the transfer slot 4512 of the transfer plate 4511. Under the action of the transfer cylinder, the transfer plate 4511 is driven to move within the transfer channel 416 towards the inlet direction of the material transport channel 412. When the transfer plate 4511 moves the carbon film body to the inlet of the material transport channel 412, the push rod is driven by the push cylinder to push the carbon film body towards the carbon film body placement position 411, so that it is transported to the carbon film body placement position 411 one by one. It should be noted that during the process of the carbon film body moving towards the carbon film body placement position 411, it will flow through the bending mechanism 470 and the shaping mechanism 440, so as to bend and shape the pins of the carbon film body. In the application of the rotary potentiometer, according to the different electronic components of the potentiometer applied, the pins need to be processed into different positions. Therefore, when the push rod pushes the carbon film body towards the carbon film body placement position 411, it is determined whether to bend and shape the pins of the carbon film body according to the actual application requirements.

[0068] As Figure 4-5As shown in FIGS. 23-24, to increase the intelligence level of the entire device, the automatic assembly device is further provided with a detection device 600 for detecting whether a workpiece is placed on the detection jig 110. There are three such detection devices 600, and they are respectively located on the downstream sides of the housing feeding device 200, the shaft core feeding device 300, and the carbon film body feeding device 400 along the rotation direction of the turntable 101, used to respectively detect whether the housing feeding device 200 loads the housing onto the jig 110, whether the shaft core device stacks the shaft core on the housing located on the jig 110, and whether the carbon film body feeding device 400 stacks the carbon film body on the shaft core located on the housing. The three detection devices 600 all include a detection vertical plate 501, and a detection cylinder 602 is fixedly installed on the detection vertical plate 501. It has a piston rod extending in the vertical direction. At the same time, a detection cross beam 603 is fixedly connected to the piston rod. The first end of the detection cross beam extends towards the turntable 101 and hangs above the turntable 101, and moves in the vertical direction under the drive of the detection cylinder 602; a detection base 610 is installed on the detection cross beam 603, and the detection base 610 is located at one end of the detection cross beam 603 above the turntable 101, so that when the turntable 101 drives the jig 110 to rotate to a position corresponding to the detection device 600, the detection base 610 is located above the jig 110 corresponding to the jig 110, thus facilitating the detection of whether there is a workpiece on the jig 110; a detection hole 611 corresponding to the bearing groove 111 on the jig 110 is opened at the bottom end of the detection base 610, and a detection column 612 forming a sliding pair with it is inserted into the detection hole 611. Two limiting grooves 613 respectively corresponding to the detection hole 611 are also opened on the detection base 610. The limiting grooves 613 are long strip-shaped through holes arranged along the axial direction of the detection hole 611, which communicate the detection hole 611 with the outside; a limiting rod 614 is also configured on the detection column 612. One end of the limiting rod 614 passes through the limiting groove 613 and is fixedly connected to the end of the detection column 612 extending into the detection hole 611, and the other end is outside the limiting groove 613, so that the detection column 612 reciprocates in the length direction of the limiting groove 613; a photoelectric switch 615 is also installed on the detection base 610, and the probe of the photoelectric switch 615 is located at the upper section position of the limiting groove 613, so as to detect the limiting rod 614.

[0069] When performing detection, the detection base 610 moves towards the jig 110 under the drive of the detection cylinder 602, that is, moves the detection column 612 towards the bearing groove 111. When the detection cylinder 602 moves the detection base 610 to a preset distance, at this time, the detection column 612 contacts the workpiece located in the bearing groove 111. Since the detection column 612 is slidably fitted in the detection hole 611, when the detection column 612 touches the workpiece, it will not crush the workpiece, but is blocked by the workpiece and slides within the detection hole 611. At the same time, the limiting rod 614 located in the limiting groove 613 moves within the limiting groove 613 and moves to the position of the probe of the photoelectric switch 615, triggering the photoelectric switch 615. If there is no workpiece successfully placed in the bearing groove 111 on the jig 110, when the detection cylinder 602 moves the detection base 610 downward to a preset distance, since there is no workpiece successfully placed on the jig 110, the detection column 612 cannot be blocked by the workpiece's contact, so the detection column 612 cannot slide along the detection hole 611, that is, the probe of the photoelectric switch 615 cannot be triggered by the limiting rod 614.

[0070] Among them, since the jig 110 is specifically provided with corresponding workpieces above the positions of the housing feeding device 200, the shaft core feeding device 300, and the carbon film body feeding device 400, therefore, the heights of the workpieces in the bearing groove 111 at the above three stations are different, and the heights increase in sequence. At this time, it is only necessary to adjust the distance that the detection cylinder 602 drives the detection base 610 to descend in the detection device 600 located downstream of the housing feeding device 200, the shaft core feeding device 300, and the carbon film body feeding device 400 respectively.

[0071] The working process of a knob potentiometer double-station automatic assembly device provided by an embodiment of the present invention is as follows: During the rotation of the turntable 101, it will drive the jig 110 located thereon to sequentially flow through the housing feeding device 200, the detection device 600, the shaft core feeding device 300, the detection device 600, the carbon film body feeding device 400, the riveting and forming device 500, and the discharging device 700. And since there are multiple jigs 110 with equally spaced intervals, continuous assembly processing can be achieved.

[0072] Now, a brief description of the process of a jig 110 flowing through the above-mentioned devices in sequence is as follows: When the jig 110 is conveyed to the outer shell loading device 200, the loading vibrating disk transports the outer shell into the outer shell slot 211 on the outer shell carrier 210. After being grasped by the first manipulator 220, it is placed into the bearing slot 111 of the jig 110. During the grasping process of the first manipulator 220, a pick-up rod 235 made of magnetic material is used to adsorb the outer shell, so as to suck it on the outer shell carrier 210. When installing it on the jig 110, the pick-up rod 235 moves upward along the sliding hole 234 under the action of the pulling cylinder 236. At this time, the pick-up block 233 separates the outer shell adsorbed on the pick-up end 231 of the pick-up rod 235, and then installs it on the jig 110.

[0073] The jig 110 loaded with the outer shell moves to the detection device 600 located downstream of the outer shell loading device 200 under the drive of the turntable 101. At this time, it is used to detect whether the outer shell is successfully installed on the jig 110. Specifically, after the detection cylinder 602 drives the detection base 610 to descend to a predetermined distance, it is detected whether the detection column 612 is touched by the outer shell installed on the jig 110. If the outer shell is loaded, the detection column 612 will slide along the detection hole 611 under the block of the outer shell, causing the limit rod 614 to move along the limit slot 613 to the other end of the limit slot 613, causing the probe of the photoelectric switch 615 to be triggered, and it outputs a detection signal, indicating that the outer shell is successfully installed on the jig 110; if the outer shell is not successfully installed, the detection column 612 will not be pushed, and the photoelectric switch 615 will not output a signal.

[0074] When the jig 110 rotates to the relative position of the shaft core loading device 300 driven by the turntable 101, the shaft core vibrating disk 340 and the conveying device transport the shaft core to the shaft core placement position 311 of the shaft core carrier 310. At this time, if the shaft core needs to be coated with lubricating oil according to the assembly requirements, under the action of the second manipulator 320, the shaft core is clamped on the shaft core carrier 310 and then loaded onto the oiling column 365 of the oiling mechanism 360. The rotating assembly drives the oiling column 365 to rotate on the oiling base, so that the oiling assembly 370 evenly coats the circumferential surface of the shaft core with lubricating oil. After that, the shaft core coated with lubricating oil is loaded onto the jig 110 and stacked with the outer shell on the jig 110.

[0075] Correspondingly, the turntable 101 drives the jig 110 to the detection device 600 located downstream of the shaft core loading device 300, which is used to detect whether the shaft core is successfully loaded onto the jig 110. Its detection method is the same as the above, and it will not be elaborated here.

[0076] Under the rotation of the turntable 101, the jig 110 moves to the relative position of the carbon film body feeding device 400, and at this position, the carbon film body is loaded onto the jig 110, and it is stacked and assembled with the housing and the shaft core to form a potentiometer as shown in Figure 1 During the process of the carbon film body being transported through the transport channel 412 to the carbon film body placement position 411, it will flow through the bending mechanism 470 and the shaping mechanism 440, which are used to bend the pins of the carbon film body so that the assembled potentiometer can be installed on different electrical appliances. Of course, according to production requirements, the pins of the carbon film body can also not be bent, and at this time, the bending mechanism 470 and the shaping mechanism 440 are in the standby state; when bending and shaping are required, the pressing cylinder 4711 moves the pressing plate 4712 towards the transport channel 412 to press the pins against the side wall 413 of the transport channel 412. At this time, the bending rod 2722 extends within the bending hole 4721 under the drive of the bending cylinder 4724, and bends the pins corresponding to the bending hole 4721 and pressed by the pressing plate 4712 upwards; after bending, the carbon film body moves to the shaping mechanism 440 located downstream of the bending mechanism 470. At this time, the shaping rod 443 moves towards the stopper 441 under the drive of the shaping cylinder 444 and presses the pins against the baffle 442, thereby realizing pressing and shaping of the pins to make them in a vertical state; at this time, the third manipulator 420 loads the carbon film body with bent and shaped pins onto the jig 110.

[0077] Similarly, the turntable 101 moves the jig 110 to the detection device 600 located downstream of the carbon film body feeding device 400, which is used to detect whether the carbon film body is successfully loaded on the jig 110, and the detection is carried out as described above.

[0078] When the jig 110 moves to the riveting and forming device 500, it is used to press the three assembled workpieces to fix the assembly. Specifically, the pins on the housing are bent inward, that is, bent towards the top surface of the carbon film body installed inside the housing, so that they are clamped on the top surface of the carbon film body, thereby enabling stable assembly. Specifically, the connecting rod 502 forms a lever with the vertical rod as the fulcrum. Under the push of the pushing cylinder 504, the connecting rod 502 pushes the pressing block 503 downward, so that the protruding part 512 of the riveting foot 511 contacts the pins of the housing and bends them along the transition arc surface 514 towards the inside of the housing, and under the action of the pressing part 513, the bent pins are pressed on the carbon film body to fix the installation.

[0079] When the jig 110 moves to the position of the blanking device 700, the blanking manipulator 701 of the blanking mechanism clamps the assembled potentiometer on the jig 110 and then transfers it to the blanking plate 702, so that the potentiometers are centrally recovered through the conveyance of the blanking plate 702.

[0080] For those skilled in the art, the scope of protection of the present invention is not limited to the details of the above exemplary embodiments. Without departing from the spirit or basic characteristics of the present invention, all implementation manners of equivalent meanings and all changes within the scope of protection made by those skilled in the art based on the elements of the present invention should be included in the present invention.

Claims

1. A dual-station automatic assembly device for a rotary potentiometer, having a machine table, and a horizontal tabletop is provided on the top surface of the machine table, characterized in that, Above the tabletop of the machine, a transmission device, a housing feeding device, a shaft core feeding device, a carbon film body feeding device, and a riveting and forming device are provided. Among them: The housing feeding device provides a housing with through holes opened at the bottom, and both sides tilted upward and formed with pins as a workpiece to the transmission device; The shaft core feeding device transfers a shaft core having a cylinder corresponding to the through hole of the housing and an end portion with a diameter larger than the diameter of the cylinder at the top of the cylinder onto the housing on the transmission device, and passes the cylinder of the shaft core through the through hole of the housing so that the shaft core is stacked on the housing; The carbon film body feeding device transfers a carbon film body with pins on one side to the shaft core stacked on the housing in the transmission device and stacks it thereon, and the carbon film body is stacked between the two upwardly tilted sides of the housing; The riveting and forming device bends the pins formed on the housing towards the top surface of the carbon film body stacked thereon, so that the carbon film body is clamped within the housing and the shaft core is fixed; The transmission device includes a turntable rotatably installed above the tabletop of the machine. Above the top surface of the turntable, a plurality of equally spaced fixtures are installed along the circumferential direction. Two mutually parallel bearing grooves for receiving the housing are opened on the fixture, and a through hole corresponding coaxially to the through hole on the housing is opened at the bottom position of the bearing groove, so that when the shaft core cylinder is stacked on the housing, it can extend into the through hole at the bottom of the bearing groove; The housing feeding device, the shaft core feeding device, the carbon film body feeding device, and the riveting and forming device are sequentially arranged beside the turntable along the rotation direction of the turntable, so that the rotation of the turntable drives the fixture to sequentially flow through the stations corresponding to the housing feeding device, the shaft core feeding device, the carbon film body feeding device, and the riveting and forming device; The housing feeding device includes, a housing carrier. Two mutually parallel housing slots for placing the housing are opened on the top surface of the housing carrier. A first manipulator is located beside the housing carrier and fixedly installed on the tabletop of the machine. It includes a first cantilever extending towards the turntable. Along the length direction of the first cantilever, a first pick-up head is slidably connected. At its lower end, two pick-up ends corresponding to the housing slots respectively are provided for sucking the housing located within the housing slots. And a first air cylinder for driving the first pick-up head to reciprocate along the length direction of the first cantilever is also fixedly installed on the first cantilever; The shaft core feeding device includes, a shaft core carrier. Two mutually parallel shaft core placement positions for placing the shaft core are opened on the top surface of the shaft core carrier. A second manipulator is located beside the shaft core carrier and fixedly installed on the tabletop of the machine. It includes a second cantilever extending towards the turntable. Along the length direction of the second cantilever, a second pick-up head is slidably connected. At its lower end, a pneumatic clamp for clamping the shaft core located within the slot of the shaft core is provided. And a second air cylinder for moving the second pick-up head reciprocally along the length direction of the second cantilever is also fixedly installed on the second cantilever; The carbon film body feeding device includes, The carbon film body carrier has two carbon film body placement positions arranged side by side on the top surface thereof for placing the shaft core. A third manipulator, the third manipulator is located beside the carbon film body carrier and fixedly installed on the machine table, and comprises a third suspension beam extending toward the turntable, a third material taking head is slidably connected to the third suspension beam along its length direction, and two pneumatic clamps are arranged at the lower end thereof, which are respectively corresponding to the placement positions of the carbon film body and are used to clamp the carbon film body located in the slot of the shaft core, and a third cylinder is also fixedly installed on the third suspension beam, which is used to reciprocate the third material taking head along the length direction of the third suspension beam; The riveting forming device comprises: A vertical plate, the vertical plate is fixedly mounted on the table top of the machine, A connecting rod, the middle part of which is pivotally connected to the top of the vertical plate, and one end of the connecting rod extends toward the turntable, a clamping block, the clamping block is vertically slidably connected to one end of the vertical plate facing the turntable, and the clamping block is suspended above the turntable, and a corresponding rivet pressing head is formed at its lower end, and the rivet pressing head is formed with a rivet pressing foot protruding downward and matching with the pins on the shell, and the rivet pressing foot is formed with a protruding portion protruding downward, and the bottom surface of the protruding portion and the side surface of the protruding portion facing the inner side of the rivet pressing head have an arc-shaped transition arc surface, and the upper part of the protruding portion is The type has a clamping portion extending toward the inner side of the riveting head, and the clamping portion has a lower surface in the horizontal direction; the upper end of the clamping block is pivotally connected to one end of the connecting rod extending toward the turntable, and the hole on the connecting rod pivotally connected to the clamping block is a long slot hole opened along the length direction of the connecting rod, and a push cylinder is located on the side of the vertical plate away from the turntable and fixedly installed on the machine table, and its piston rod extending upward is pivotally connected to one end of the connecting rod away from the turntable, and the hole where the connecting rod is pivotally connected to the piston rod of the push cylinder is a long slot hole opened along the length direction of the connecting rod, The first material taking head includes a first mounting plate slidably connected to the first cantilever beam and driven by the first cylinder to reciprocate along the length direction of the first cantilever beam. A material taking block is slidably connected to the side surface of the first mounting plate in the vertical direction. Two sliding holes penetrating the material taking block and corresponding to the two shell slots are arranged side by side in the vertical direction on the top surface of the material taking block. A material taking rod made of a magnetic material and forming a sliding pair with the sliding holes is sleeved in the two sliding holes. One end of the material taking rod extending out of the sliding hole and located below the material taking block constitutes a material taking end for sucking the shell. A pulling cylinder is fixedly installed at the top end of the material taking block. The pulling cylinder has a piston rod extending downward and is fixedly connected to one end of the material taking rod located on the top surface of the material taking block, so as to drive the material taking rod to reciprocate in the sliding hole in the up and down direction. A first telescopic cylinder for driving the material taking block to reciprocate in the up and down direction along the side surface of the first mounting plate is arranged on the first mounting plate, so as to drive the material taking block to reciprocate along the side surface of the first mounting plate towards the core loading table. The shell feeding device further has a shell feeding assembly. The shell feeding assembly includes a shell conveying plate and a shell vibrating disk for containing the shells and vibrating and conveying them out linearly. Two parallel conveying channels are opened on the top surface of the shell conveying plate. One ends of the two conveying channels are connected to the shell slots on the shell loading table, and the other ends are communicated with the outlet of the shell vibrating disk, so as to linearly vibrate and convey the shells into the shell slots. The shell conveying plate further has cover plates respectively corresponding to the two conveying channels and covering them above. Two parallel loading tracks are further opened on the core loading table. The loading tracks are recessed in the upper surface of the core loading table and extend along the upper surface of the core loading table towards the core placing position. The core loading table further has two docking tracks arranged side by side and respectively communicating with the two loading tracks. The core feeding device further includes a core vibrating disk for containing the cores and vibrating and sending them out linearly and a conveying mechanism for pushing the cores conveyed out by the core vibrating disk along the loading tracks towards the core placing position. Among them: the core vibrating disk has a core conveying plate. Two core channels respectively corresponding to the docking tracks are opened on the core conveying plate. One end of the core channel is communicated with the outlet of the core vibrating disk, and the other end is lapped with the docking track, so that the cores are conveyed from the core vibrating disk into the docking tracks. The conveying mechanism includes a conveying push plate inserted into the loading tracks and a conveying cylinder. The conveying cylinder is fixedly installed on the core loading table and its piston rod is connected to the conveying push plate to drive the conveying push plate to reciprocate along the loading tracks towards the core placing position, so as to push the cores flowing to the intersection of the docking tracks and the loading tracks to the core placing position.

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