CN210957252U - O-shaped ring assembling device for connector anode - Google Patents

Abstract

An O-ring assembling device for a positive electrode of a connector, comprising: the device comprises a turntable module, an O-shaped ring loading module, an O-shaped ring mounting module and a movable loading module; the turntable module comprises a turntable, power equipment and a body positioning plate; the O-shaped ring feeding module comprises a vibrating disc, a direct vibration track connected with an outlet of the vibrating disc, an O-shaped ring positioning plate and an O-shaped ring mounting assembly, the movable feeding module comprises a connecting plate fixed on a table top through a hollow aluminum extrusion piece, a horizontal pushing cylinder, a sliding rail slider, a lifting cylinder and a feeding device, and the O-shaped ring mounting module comprises a horizontal pushing cylinder, a first lifting cylinder, a second lifting cylinder, a four-petal O-shaped ring sleeve and an O-shaped ring separating sleeve; above-mentioned O shape right assembly device will get the material and install separately the setting, compact structure, degree of automation height.

Description

O-shaped ring assembling device for connector anode

Technical Field

The utility model relates to a photovoltaic power generation is connector equipment technical field for the terminal box specifically is a anodal O shape circle assembly device that uses of connector.

Background

The solar junction box is a connecting device between a solar cell array and a solar charging control device, and is mainly used for connecting and protecting a solar photovoltaic module, connecting electric power generated by a solar cell with an external circuit and conducting current generated by the photovoltaic module. The junction box generally comprises a box cover, a box body, a wiring terminal, a diode, a connecting wire and a connector, wherein the connector is a part for connecting the junction box with an action element and is divided into a connector anode and a connector cathode, the connector anode is taken as an example and comprises a body, an O-shaped ring, a clamping ring, a plug, a nut and a nut, the assembly sequence is required to be designed according to the installation position and the structural characteristics of the part, the connector anode assembly process in the prior art cannot achieve full-automatic treatment, the assembly of the O-shaped ring and the body is taken as an example, the manual installation greatly slows the assembly speed and the assembly qualification rate, and the proficiency dependence on workers is high; furthermore, the assembling device in the prior art is complex in structure and occupies a large space, so a new connector assembling device is needed to solve one or more of the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses use the positive example of connector, provide a novel positive equipment of connector device, according to the similarity of connector negative pole and the positive structure of connector, can selectively choose for use partial device to use.

An O-ring assembling device for a positive electrode of a connector, comprising: carousel module, removal are got material module, body material loading module, O shape circle installation module, rand material loading module, rand press material module, T shape end cap and T shape nut installation module, unloading module, its characterized in that:

the turntable module comprises a turntable, power equipment and a body positioning plate, wherein the turntable comprises an upper fixing disc and a lower turntable, the power output end of the power equipment is fixedly connected with the lower turntable to drive the lower turntable to rotate, the upper fixing disc is positioned above the lower turntable and does not rotate, the lower turntable is provided with N avoiding grooves at equal angles, N body positioning plates provided with body positioning profiling cavities are arranged at the edge of the lower turntable at equal angles along the circumferential direction, the body positioning plates are screwed on the two side plate surfaces of the avoiding grooves, the body positioning profiling cavities are positioned at the avoiding grooves, and N is a natural number which is more than or equal to the action station;

the movable material taking module comprises a connecting plate, a horizontal pushing cylinder, a sliding rail slider, a lifting cylinder and a material taking device, wherein the connecting plate is fixed on a table top through a hollow aluminum extrusion piece;

the feeding module of the body comprises a vibrating disc, a direct vibration track connected with an outlet of the vibrating disc, a positioning assembly and a baffle plate, wherein the baffle plate is fixed on one side, close to the length section of the outlet, of the direct vibration track with a direct vibration source through a fixing column, the baffle plate is positioned right above the direct vibration track and higher than the upper end face of the body in the direct vibration track, the positioning assembly comprises a connecting plate and a positioning plate processed with a positioning profiling cavity, the positioning plate is fixed on the side face of the same hollow aluminum extrusion piece through the connecting plate and the movable material taking module, and the fixed height of the connecting plate is adjustable; the positioning assembly is connected with an outlet of the direct vibration track, and a movable material taking module for the body is arranged above the positioning assembly on the body feeding module station;

the O-shaped ring feeding module comprises a vibrating disc, a direct vibration track connected with an outlet of the vibrating disc, an O-shaped ring positioning plate and an O-shaped ring mounting assembly, wherein the O-shaped ring positioning plate is arranged at the outlet of the direct vibration track, a movable material taking module for an O-shaped ring is arranged at a station of the O-shaped ring feeding module, and a material taking device in the movable material taking module is of a structure capable of finishing ring expansion and grabbing of the O-shaped ring;

the O-shaped ring mounting module comprises a connecting plate fixed on a table top, a sliding rail sliding block assembly facing to the direction of a body positioning plate in a lower rotary table is fixed on the connecting plate, a flat push cylinder is arranged on the side plate surface of the connecting plate, a piston shaft of the flat push cylinder is fixed with a sliding block in the sliding rail sliding block assembly, a first lifting cylinder and a second lifting cylinder are directly or indirectly fixed on the upper plate surface of the sliding block in the sliding rail sliding block assembly, a four-petal O-shaped ring sleeve is fixed in a through hole of the plate surface of the first connecting plate, the first connecting plate is fixed with the lifting plate of the first lifting cylinder, an O-shaped ring separating sleeve is fixed with a through hole of the plate surface of the second connecting plate, the four-petal O-shaped ring sleeve penetrates through a plate surface hole of the second connecting plate and is concentrically arranged with the O-shaped ring separating sleeve, the second connecting plate is connected with a third, The inner sides of connecting columns on two sides between the third connecting plates are fixed, the vertical plate surface of the L-shaped fourth connecting plate is fixed with the lifting plate of the first lifting cylinder, the transverse plate surface of the L-shaped fourth connecting plate stretches over the second lifting cylinder, and the piston shaft of the second lifting cylinder passes through the transverse plate surface of the fourth connecting plate in a friction-free manner and is fixed with the center of the third connecting plate;

the clamping ring feeding module comprises a vibrating disk, a direct vibration track connected with an outlet of the vibrating disk and a material stirring assembly parallel to and level with the outlet of the direct vibration track, wherein a moving material taking module for the clamping ring is fixed on a table top through a hollow aluminum extrusion piece at the station, the material stirring assembly is fixedly connected with the hollow aluminum extrusion piece through a connecting plate, the material stirring assembly comprises a sliding table cylinder and a stirring plate, the sliding table cylinder is fixed on the surface of the connecting plate, the stirring plate is provided with a clamping ring profiling arc groove in a processing mode, the stirring plate is fixed on the upper surface of the connecting plate connected with a sliding block of the sliding table cylinder, and the surface of the connecting plate between the stirring plate and the sliding block of the sliding table cylinder is parallel to and level with the;

the clamping ring pressing module comprises an air cylinder and a pressing rod, the air cylinder and the pressing rod are fixed on the table board through a mounting plate, a power output shaft of the air cylinder is fixedly connected with the end part of the pressing rod, and the end part of the pressing rod is provided with a guide end with the diameter gradually increased;

the T-shaped plug and T-shaped nut mounting module comprises a vibrating disc, a straight vibrating track connected with an outlet of the vibrating disc, a tapered material taking rod and a material taking rod outer sleeve arranged at the lower end part, wherein the material taking rod outer sleeve penetrates through a plate surface hole to be fixedly connected with a connecting plate;

the nut mounting module comprises a vibrating disc, a direct vibration track connected with an outlet of the vibrating disc, a nut positioning plate processed with a nut copying arc-shaped groove and a nut jacking assembly, wherein a material taking device used in the nut moving material taking module at the station comprises a lifting cylinder above the nut copying arc-shaped groove, a push rod, a motor, a connecting shaft sleeve, a driven wheel, a first connecting plate, a second connecting plate, an upper nut fixing ring and a lower nut fixing ring, the first connecting plate is connected with a power output shaft of the lifting cylinder in the moving material taking module, the second connecting plate is fixedly connected with the bottom of the first connecting plate, the upper plate surface of the second connecting plate is fixedly provided with the motor, the power output shaft of the motor is fixedly sleeved with a driving wheel and is connected with the driven wheel through a synchronous belt, a cylinder body of the lifting cylinder is fixed on the surface of the first connecting plate, and the power, the connecting shaft sleeve penetrates through a plate surface hole of the second connecting plate, the driven wheel is fixedly sleeved at the upper end of the connecting shaft sleeve, the connecting shaft sleeve is connected with the plate surface hole of the second connecting plate in a rolling friction-free mode through a rolling bearing, a bottom plate surface of the connecting shaft sleeve is fixed with an upper nut fixing ring, the upper nut fixing ring is fixed with a lower nut fixing ring in a plate surface mode, the push rod penetrates through a center hole of the connecting shaft sleeve in a clearance mode and extends to the position above the aperture of the upper nut fixing ring, the nut positioning plate is fixed on the surface of the hollow aluminum extrusion piece through the connecting plate, and the nut jacking assembly comprises a jacking cylinder fixed with the table top and a jacking cylinder fixed with a;

the blanking module comprises a moving material taking module arranged at the position of a blanking station and a blanking barrel fixed on the side face of a hollow aluminum extruded part, the blanking barrel comprises a waste barrel and a finished product barrel, a hole is formed in the table top under the waste barrel, a waste collecting device is arranged below the hole, a finished product collecting device is arranged at the outlet end of the finished product barrel, and the moving material taking module at the position of the station is the same as the moving material taking module in the body feeding module in structure.

Preferably, the O-shaped ring assembling device for the connector anode is a parallel opening and closing type clamping jaw cylinder, and the material taking device used in the body moving material taking module in the body feeding module is a parallel opening and closing type clamping jaw cylinder.

Preferably, the O-shaped ring assembling device for the positive electrode of the connector, the cross-shaped avoiding groove is formed in the upper plate surface of the O-shaped ring positioning plate, and the material taking device used in the O-shaped ring moving material taking module in the O-shaped ring feeding module is a parallel opening and closing four-claw cylinder.

Preferably, the anodal O shape circle assembly device that uses of connector, O shape circle loading module still includes O shape circle locating plate deflector, lift cylinder, the cylinder body of lift cylinder is fixed on the mesa directly or indirectly, the piston shaft and the O shape of lift cylinder circle locating plate face are fixed, the O shape circle locating plate deflector passes through intermediate junction board and lift cylinder's cylinder body fixed connection, O shape circle locating plate deflector is close to O shape circle locating plate one side and is provided with O shape circle locating plate profile groove, O shape circle locating plate curb plate side be provided with O shape circle locating plate profile groove intercommunicating pore structure, the pore structure is located install the fiber optic inductor in O shape circle locating plate up end height and the pore structure, straight vibrating track transfer plane equals or is a bit higher than O shape circle locating plate up end height.

Preferably, the anodal O shape circle assembly device that uses of connector, rand material loading module station department is arranged in the extracting device of removal extracting module of rand and includes the lift cylinder, gets material pole, material returned cover, the power take off end of lift cylinder with get material pole upper end fixed connection, the lower extreme diameter of getting the material pole slightly is greater than the internal diameter size of rand, get the face fixed connection that the material pole passes through intermediate lamella and the crowded piece of cavity aluminium, get the inside through-hole that the material pole passed material returned cover and extend one section distance.

Preferably, the connector is anodal with O shape circle assembly device, rand press the material module still include elasticity material returned cover, fix the vertical slide rail sliding block set spare at the mounting panel, press the material pole contactless to pass the slider through-hole, the great upper end embedding of elasticity material returned cover diameter is installed in the inside shoulder hole of slider and is cup jointed in the material pole outside of pressing, the upper end that the elasticity material returned cover outside was cup jointed spring and spring supports and leans on at elasticity material returned cover tip face, lower extreme down and lean on at inside shoulder hole up end.

Preferably, the O-shaped ring assembling device for the positive electrode of the connector is provided with a pressing component at the position of a pressing module of a clamping ring on the upper fixed disk, and the pressing component is a horizontal pushing cylinder fixed on the upper fixed disk and a U-shaped clamping groove fixed at the end part of a piston shaft of the horizontal pushing cylinder.

Preferably, the O-shaped ring assembling device for the connector anode is characterized in that a collar detection module arranged on the surface of the upper fixing disc is arranged among the collar pressing module, the plug and the nut installation module, the collar detection module comprises a connecting seat, a lifting cylinder, a vertical sliding rail block assembly, a connecting block, a detection rod and a detection rod outer sleeve, the connecting seat is fixed at a station position corresponding to the collar detection module in the upper fixing disc, the vertical sliding rail block assembly is fixed on the vertical surface of the connecting seat, the connecting block is fixed with a sliding block in the sliding rail block assembly, the lifting cylinder is fixed at the top end of the connecting seat in an inverted buckling manner, the power output end of the lifting cylinder is fixed at the upper end of the connecting block, the detection rod is sleeved in a central hole of the detection rod outer sleeve, the detection rod outer sleeve is fixedly sleeved in a plate surface hole of the connecting block, and, the diameter of the stepped cylinder at the lowest end is smaller than the inner diameter of the clamping ring, the length of the stepped cylinder is smaller than or equal to the length of the clamping ring, the diameter of the upper end stepped cylinder adjacent to the stepped cylinder at the lowest end is larger than the outer diameter of the clamping ring, the connecting block side plates on the left side and the right side of the stepped cylinder at the top end of the detection rod are respectively provided with a proximity switch at different heights, one proximity switch is used for detecting the height of the upper end face of the stepped cylinder at the top end of the detection rod, and the other proximity.

Preferably, the anodal O shape circle assembly device that uses of connector, the medial surface of retainer plate on the nut be provided with the outside profile modeling chamber of strengthening the non-slip bead matching of nut, the non-slip bead section location is strengthened in the inner chamber of retainer plate on the nut in the upper end of nut, the side face of retainer plate is provided with the screw hole along the equidirectional angle such as circumferencial direction under the nut, be provided with the elasticity plunger in the screw hole, the elasticity plunger passes through outside thread and fixes in the screw hole and the conflict ball of elasticity plunger by spring and spring end connection constitutes, the smooth section of nut lower extreme is located the nut under the inner chamber of retainer plate and the conflict ball of elasticity plunger supports admittedly at the nut outer wall, and the external dimension of nut will be less than retainer plate, nut under the nut retainer plate inner chamber size.

Preferably, the O-ring assembling device for the positive electrode of the connector is characterized in that a piston shaft of the horizontal pushing cylinder is fixed to a sliding block in the sliding rail block assembly, a first lifting cylinder and a second lifting cylinder are indirectly fixed to the upper plate surface of the sliding block in the sliding rail block assembly through a cylinder fixing plate, namely the first lifting cylinder and the second lifting cylinder are fixed to the upper plate surface of the cylinder fixing plate, wherein the first lifting cylinder or/and the second lifting cylinder are/is fixed to a fixing groove in the upper plate surface of the cylinder fixing plate 506, and the fixing groove is an inclined fixing groove which forms a certain angle with the rectangular cylinder fixing plate in the length direction and the width direction.

The inclined design of the fixing groove has the following advantages: firstly, the inclined length is greater than the straight length, and the inclined fixing groove can meet the installation requirement of a large-size cylinder under the condition that the size of a cylinder fixing plate is not increased; secondly, for the narrow and small whole equipment of installation space, above-mentioned mounting means can play the effect of avoiding a position installation.

Preferably, the O-shaped ring assembling device for the positive electrode of the connector is provided with a U-shaped through groove communicated with the edge part, the U-shaped through groove is coincided with a part of cross-shaped avoiding groove, and the sensing end of the optical fiber sensor installed in the hole-shaped structure is located in the U-shaped through groove.

The overlapping type arrangement of the U-shaped through groove and part of the cross-shaped avoiding groove does not delay the clamping of the parallel opening and closing type four-claw cylinder with the O-shaped ring avoiding position, and simultaneously provides an internal space for the installation of the optical fiber sensor.

Description of the drawings:

the embodiments are further described with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of the overall structure of an O-ring assembly device for a positive electrode of a connector according to the present invention;

fig. 2 is a schematic view of the overall structure of the O-ring assembly device for a positive electrode of a connector according to the present invention;

fig. 3 is a schematic structural view of a turntable module according to the present invention;

fig. 4 is a schematic structural view of a moving material-taking module and a body material-feeding module in the O-ring assembling device for the positive electrode of the connector according to the present invention;

fig. 5 is a schematic structural view of an O-ring feeding module and an O-ring mounting module according to the present invention;

fig. 6 is a schematic view of a partial structure of an O-ring feeding module according to the present invention;

fig. 7 is a schematic structural view of a collar feeding module according to the present invention;

fig. 8 is a schematic structural view of the collar pressing module according to the present invention;

fig. 9 is a schematic cross-sectional view of the material returning sleeve and the material pressing rod of the collar pressing module of the present invention passing through the slider without contact;

fig. 10 is a schematic structural view of a collar detection module according to the present invention;

fig. 11 is a schematic structural view of a T-shaped plug and a T-shaped nut mounting module according to the present invention;

fig. 12 is a schematic structural view of a nut mounting module according to the present invention;

figure 13 is a cross-sectional view of a portion of the structure of the nut mounting module according to the present invention;

fig. 14 is a schematic view of a connector according to the present invention;

fig. 15 is a schematic structural view of a part of a connector according to the present invention;

fig. 16 is a schematic structural view of a cylinder fixing plate according to the present invention;

the specific structure corresponding to the number is as follows:

the device comprises a turntable module 100, a turntable 101, an upper fixed disc 1011, a lower turntable 1012, a power device 102, a body positioning plate 103, a movable material taking module 200, a connecting plate 201, a horizontal pushing cylinder 202, a slide rail slider 203, a lifting cylinder 204, a material taking device 205, a body material taking module 300, a vertical vibrating rail 301, a positioning assembly 302, a connecting plate 3021, a positioning plate 3022, a baffle 303, an O-ring material taking module 400, a vertical vibrating rail 401, an O-ring positioning plate 402, a cross avoiding groove 4021, a U-shaped through groove 4022, an O-ring positioning plate guide plate 403, an O-ring positioning plate profiling groove 4031, a lifting cylinder 404, an O-ring mounting module 500, a first lifting cylinder 501, a second lifting cylinder 502, a four-petal O-ring sleeving 503, a first connecting plate 5031, an O-ring separating sleeve 504, a second connecting plate 5041, a third connecting plate 5042, a fourth connecting plate 5043, a horizontal pushing cylinder 505, a cylinder fixing plate 506 and a fixing groove 5061, a collar feeding module 600, a straight vibrating track 601, a material stirring assembly 602, a sliding table cylinder 6021, a material stirring plate 6022, a lifting cylinder 603, a material taking rod 604, a material returning sleeve 605, a collar pressing module 700, a cylinder 701, a material pressing rod 702, an elastic material returning sleeve 703, a material pressing assembly 704, a collar detection module 800, a connecting seat 801, a lifting cylinder 802, a connecting block 803, a detection rod 804, a detection rod outer sleeve 805, a T-shaped plug and T-shaped nut mounting module 900, a straight vibrating track 901, a material taking rod 902, a material taking rod outer sleeve 903, a nut mounting module 10, a straight vibrating track 11, a nut positioning plate 12, a lifting cylinder 13, a push rod 14, a motor 15, a connecting shaft sleeve 16, a driven wheel 17, a first connecting plate 18, a second connecting plate 19, a nut upper fixing ring 110, a nut lower fixing ring 111, a nut lifting assembly 112, a material discharging module 20, a waste material barrel 21, a finished product barrel 22, a body A, a collar D, a T-shaped plug and T-shaped nut assembly E, a nut F,

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

Specific embodiment example 1:

the utility model discloses use the positive example of connector, provide a novel positive equipment of connector device, according to the similarity of connector negative pole and the positive structure of connector, can selectively choose for use partial device to use.

An O-ring assembling device for a positive electrode of a connector, comprising: the device comprises a turntable module 100, a movable material taking module 200, a body feeding module 300, an O-shaped ring feeding module 400, an O-shaped ring mounting module 500, a clamping ring feeding module 600, a clamping ring pressing module 700, a T-shaped plug and T-shaped nut mounting module 900, a nut mounting module 10 and a blanking module 20;

the turntable module 100 comprises a turntable 101, power equipment 102 and a body positioning plate 103, wherein the turntable 101 comprises an upper fixed disc 1011 and a lower turntable 1012, the power output end of the power equipment 102 is fixedly connected with the lower turntable 1012 to drive the lower turntable 1012 to rotate, the upper fixed disc 1011 is positioned above the lower turntable 1012 and does not rotate, the lower turntable 1012 is provided with N avoiding grooves at equal angles, the edge of the lower turntable 1012 is provided with N body positioning plates 103 processed with body positioning profiling cavities at equal angles along the circumferential direction, the body positioning plates 103 are screwed on the two side plate surfaces of the avoiding grooves, the body positioning profiling cavities are positioned at the avoiding grooves, and N is a natural number greater than or equal to an action station;

the movable material taking module 200 comprises a connecting plate 201 fixed on a table top through a hollow aluminum extrusion piece, a horizontal pushing cylinder 202, a sliding rail sliding block 203, a lifting cylinder 204 and a material taking device 205, wherein the connecting plate 201 is fixed with the hollow aluminum extrusion piece, the sliding rail sliding block assembly 203 is fixed on the surface of the connecting plate 201, a cylinder body of the lifting cylinder 204 is fixed with a sliding block in the sliding rail sliding block assembly 203, the material taking device 205 is fixedly connected with a power output end of the lifting cylinder 204, the material taking device 205 is used for a material taking device, and the type of the material taking device 205 can be correspondingly changed according to the shape of a material taking object;

the body feeding module 300 comprises a vibrating disk, a straight vibrating track 301 connected with an outlet of the vibrating disk, a positioning assembly 302 and a baffle 303, wherein the baffle 303 is fixed on one side of the straight vibrating track 301 with a straight vibrating source, which is close to the length section of the outlet, through a fixed column (not marked in the figure), the baffle 303 is positioned right above the straight vibrating track 301 and is higher than the upper end surface of the body in the straight vibrating track 301, the positioning assembly 302 comprises a connecting plate 3021 and a positioning plate 3022 processed with a positioning profiling cavity, the positioning plate 3022 is fixed on the side surface of the same hollow aluminum extrusion through the connecting plate 3021 and the movable material taking module 200, and the fixed height of the connecting plate 3021 is adjustable; the positioning component 302 is connected with an outlet of the straight vibration rail 301; the movable material taking module 200 for the body is arranged above the positioning group price 302 at the station 300 of the body feeding module; (the working principle is that the parts of the body in the connector are loaded by the vibration disc and enter the straight vibration track 301 through the outlet of the vibration disc, the body is continuously transmitted and vibrated to the positioning profile modeling cavity of the positioning plate 3022 under the action of the straight vibration source, the moving material taking module 200 at the station passes through, the body is placed in the body positioning profile modeling cavity of the body positioning plate 103 by translation, descending, material taking, ascending, translation and descending, and then the power equipment 102 rotates for a certain angle to rotate the body positioning plate 103 with the body placed to the installation position of the O-shaped ring)

The O-shaped ring feeding module 400 comprises a vibrating disc, a straight vibrating track 401 connected with an outlet of the vibrating disc, an O-shaped ring positioning plate 402 and an O-shaped ring mounting assembly, wherein the O-shaped ring positioning plate 402 is arranged at the position of the outlet end of the straight vibrating track 401, a moving material taking module 200 for O-shaped rings is arranged at a station of the O-shaped ring feeding module 400, and a material taking device 205 in the moving material taking module 200 is of a structure capable of completing ring expansion and grabbing of the O-shaped rings;

the O-ring installation module 500 comprises a connection plate fixed on the table top, a sliding rail slider assembly facing the direction of the body positioning plate 103 (at the O-ring installation station and the body positioning plate 103 with the body) in the lower turntable 1012 is fixed on the connection plate, a flat push cylinder 505 is arranged on the plate surface of the connection plate, the piston shaft of the flat push cylinder 505 is fixed with the slider in the sliding rail slider assembly, a first lifting cylinder 501 and a second lifting cylinder 502 are fixed on the upper plate surface of the slider in the sliding rail slider assembly, a four-petal O-ring sleeve 503 is fixed in the through hole of the plate surface of the first connection plate 5031, the first connection plate 5031 is fixed with the lifting plate of the first lifting cylinder 501, the O-ring separation sleeve 504 is fixed with the through hole of the plate surface of the second connection plate 5041, the four-petal O-ring sleeve 503 passes through the plate surface hole of the second connection plate 5041 and is arranged concentrically with the O-ring separation sleeve 504, the second connection plate 5041 is connected with the third connection, the first connecting plate 5031 is located at the inner side of a connecting column at two sides between the second connecting plate 5041 and the third connecting plate 5042, a vertical plate surface of the L-shaped fourth connecting plate 5043 is fixed with the lifting plate of the first lifting cylinder 501, a transverse plate surface of the L-shaped fourth connecting plate 5043 spans above the second lifting cylinder 502, and a piston shaft of the second lifting cylinder 502 passes through the transverse plate surface of the fourth connecting plate 5043 without friction and is fixed with the center of the third connecting plate 5042; (the working principle is that the O-shaped ring moving material taking module 200 lifts, translates and lowers the O-shaped ring with enlarged diameter to the position right above the four-petal O-shaped ring sleeve 503, then releases the horizontally arranged O-shaped ring, the O-shaped ring falls down and is sleeved outside the four-petal O-shaped ring sleeve 503, the horizontal pushing cylinder 505 is started and pushes the first lifting cylinder 501, the second lifting cylinder 502, the four-petal O-shaped ring sleeve 503 and the O-shaped ring separating sleeve 504 to the position right below the body positioning plate 103 at the installation position of the O-shaped ring, the first lifting cylinder 501 is started to push the four-petal O-shaped ring sleeve 503 and the O-shaped ring separating sleeve 504 to be installed to synchronously lift the O-shaped ring to be installed to the lower end of the body, the second lifting cylinder 502 is started to push the O-shaped ring separating sleeve 504 to lift the O-shaped ring until the O-shaped ring is clamped into the O-shaped ring accommodating groove at the lower end of the body, and all the components in the O-shaped ring installation module 500 reversely move to the original position in sequence, the power equipment 102 rotates the body positioning plate 103 with the O-shaped ring to the next station after rotating a certain angle, namely, the position of the clamping ring feeding module 600 station)

The collar feeding module 600 comprises a vibrating disc, a straight vibrating track 601 connected with an outlet of the vibrating disc, and a material stirring assembly 602 aligned with an outlet of the straight vibrating track 601, wherein the moving material taking module 200 for a collar is fixed on a table top through a hollow aluminum extrusion at the station, the material stirring assembly 602 is fixedly connected with the hollow aluminum extrusion through a connecting plate, the material stirring assembly 602 comprises a sliding table cylinder 6021 and a material stirring plate 6022, the sliding table cylinder 6021 is fixed on the surface of the connecting plate, the material stirring plate 6022 is provided with a collar profiling arc groove, the material stirring plate 6022 is fixed on the upper surface of the connecting plate connected with a sliding block of the sliding table cylinder 6021, and the surface of the connecting plate between the material stirring plate 6022 and the sliding block of the sliding table cylinder 6021 is aligned with the conveying surface of the straight vibrating track 601; (the working principle is as follows: the collar is transferred to a kickoff plate 6022 from a straight vibration rail 601 and is processed with a collar profiling arc groove, an optical fiber sensor communicated with the collar profiling arc groove is arranged in the kickoff plate 6022, when the situation that the collar is in place is sensed, a sliding table cylinder 6021 is started, and then the kickoff plate 6022 is pushed to pull out the collar arranged in the collar profiling arc groove and move to the position under a collar moving material taking module 200 to complete the material taking of the collar and move to a body positioning plate 103 at a station of the collar material feeding module 600 to place the collar into a central hole from the upper part of the body, after a power device 102 rotates a certain angle, the body positioning plate 103 with the collar is rotated to the next station, namely, the collar material pressing module 700 is arranged)

The collar pressing module 700 comprises a cylinder 701 and a pressing rod 702 which are fixed on the table board through a mounting plate, a power output shaft of the cylinder 701 is fixedly connected with the end part of the pressing rod 702, and a guide end with a gradually increased diameter is arranged at the end part of the pressing rod 702; (the working principle is that the air cylinder 701 acts to press the material pressing rod 702 downwards, the material pressing rod 702 positioned right above the body at the clamping ring material pressing module 700 directly enters the center hole of the body, the guide end presses the junction of the outer oblique reverse buckle above the clamping ring and the lower cylindrical ring, the clamping ring is pressed downwards to the position that the outer oblique reverse buckle above the clamping ring is just clamped in the clamping groove along with the further action of the air cylinder 701, the outer oblique reverse buckle above the clamping ring is in a pressed state, and the power equipment 102 rotates for a certain angle to rotate the body positioning plate 103 with the clamping ring material pressed to the next station)

The T-shaped plug and T-shaped nut mounting module 900 comprises a vibrating disc, a straight vibrating track 901 connected with an outlet of the vibrating disc, a tapered material taking rod 902 and a material taking rod outer sleeve 903, wherein the lower end part of the straight vibrating track is provided with the tapered material taking rod 902 and the material taking rod outer sleeve 903; (the working principle is that the assembly of the T-shaped plug and the T-shaped nut is fed by a vibrating disc and is conveyed to the lower end of a material taking rod 902 through a straight vibrating track 901, the material taking rod 902 is driven to descend to the position right above the assembly under the action of a movable material taking module 200, a taper section at the end part is inserted into a central hole of the T-shaped plug at the upper end of the assembly made of plastic material, the assembly is conveyed into a central hole of a body positioning plate 103 with a collar installed under the action of the movable material taking module 200, the assembly is further descended to install the assembly in the central hole, a lifting cylinder 204 contracts to drive the material taking rod 902 to ascend, a material taking rod outer sleeve 903 separates the assembly of the T-shaped plug and the T-shaped nut from the material taking rod 902 and then reversely moves to the original position, a lower turntable 1012 rotates to the next station, namely, the station of a nut

The nut installation module 10 comprises a vibration disc, a direct vibration track 11 connected with an outlet of the vibration disc, a nut positioning plate 12 processed with a nut copying arc-shaped groove, and a nut jacking assembly 112, wherein a material taking device 205 used in the nut moving material taking module 200 at the station comprises a lifting cylinder 13 above the nut copying arc-shaped groove, a push rod 14, a motor 15, a connecting shaft sleeve 16, a driven wheel 17, a first connecting plate 18, a second connecting plate 19, a nut upper fixing ring 110 and a nut lower fixing ring 111, the first connecting plate 18 is connected with a power output shaft of a lifting cylinder 204 in the moving material taking module 200, the second connecting plate 19 is fixedly connected with the bottom of the first connecting plate 18, the motor 15 is fixed on the upper plate surface of the second connecting plate 19, a power output shaft of the motor 15 is fixedly sleeved with a driving wheel, and the driving wheel is connected with the driven wheel 17 through a synchronous belt, the cylinder body of the lifting cylinder 13 is fixed on the surface of a first connecting plate 18, the power output shaft is fixed with a push rod 14, the connecting shaft sleeve 16 penetrates through a plate surface hole of a second connecting plate 19, the driven wheel 17 is fixedly sleeved on the upper end of the connecting shaft sleeve 16, the connecting shaft sleeve 16 is connected with the plate surface hole of the second connecting plate 19 in a rolling friction-free manner through a rolling bearing, the bottom plate surface of the connecting shaft sleeve 16 is fixed with an upper nut fixing ring 110, the upper nut fixing ring 110 is fixed with a lower nut fixing ring 111, the push rod 14 penetrates through a central hole of the connecting shaft sleeve 16 in a clearance manner and extends to the upper part of the aperture of the upper nut fixing ring 110, the nut positioning plate 12 is fixed on the surface of a hollow aluminum extrusion piece through a connecting plate, and the nut jacking assembly 112 comprises a jacking cylinder fixed with a table; (the working principle is as follows: the nut is transferred to the nut profiling arc-shaped groove of the nut positioning plate 12 from the straight vibration rail 11, the nut jacking assembly 112 acts to jack the nut right above to the positioning cavity of the nut upper fixing ring 110 and the nut lower fixing ring 111, the nut is moved to the upper end of the body under the action of the movable material taking module 200, the nut upper fixing ring 110 and the nut lower fixing ring 111 are driven to rotate under the action of the motor 15, in the process, the lifting cylinder 13 pushes the push rod 14 to push the nut downwards, so that the nut descends along with the height of the screw in the screwing process and is finally fixed on the upper end surface of the body, the nut assembly is a final assembly procedure, and the nut is transferred to the next station, namely, the blanking station under the action of the lower turntable 1012)

Unloading module 20 is including setting up the removal of unloading station position department and getting material module 200, fixing the blanking section of thick bamboo at the crowded spare curb plate face of cavity aluminium, the blanking section of thick bamboo includes waste material barrel 21, finished product barrel 22, the mesa processing under waste material barrel 21 is porose and this hole below is provided with the garbage collection device, finished product barrel 22 exit end is provided with the finished product collection device, the removal of this station department is got the material module 200 structure and is got the material module 200 structure with removing in the body material loading module 300 and be the same.

The positive assembling device of the connector is sequentially divided into a body feeding station, an O-shaped ring feeding station, a clamping ring press-fitting station, a T-shaped plug and T-shaped nut assembling part mounting station, a nut mounting die and a discharging station, switching between the stations is completed through rotation of the lower rotary disc between the stations, the whole device is simple in structure and small in occupied space, the structure is compact, automation of a positive assembling process of the connector can be achieved, and assembling efficiency and yield are greatly improved.

Further, the material taking device 205 of the body moving material taking module 200 in the body feeding module 300 is a parallel opening and closing type clamping jaw cylinder.

Further, a cross avoiding groove 4021 is formed in the upper plate surface of the O-ring positioning plate 402, and the material taking device 205 in the O-ring feeding module 400, which is used for the O-ring moving material taking module 200, is a parallel opening and closing four-claw cylinder. (the working principle is that under the action of the O-shaped ring moving material taking module 200, the closed four-jaw chuck permeates into the center of the O-shaped ring and the foot pad of the cross avoiding groove 4021 through translation and descending, the parallel open-close type four-jaw cylinder is started to act, the four-jaw chuck opens and applies outward expansion grabbing force to the O-shaped ring, and then the O-shaped ring is driven to ascend and translate to the O-shaped ring mounting component through the action of the O-shaped ring moving material taking module 200)

Further, the O-ring feeding module 400 further includes an O-ring positioning plate guide plate 403 and a lifting cylinder 404, a cylinder body of the lifting cylinder 404 is directly or indirectly fixed on the table top, a piston shaft of the lifting cylinder 404 is fixed to the surface of the O-ring positioning plate 402, the O-ring positioning plate guide plate 403 is fixedly connected to the cylinder body of the lifting cylinder 404 through a middle connecting plate, an O-ring positioning plate profiling groove 4031 is formed in one side, close to the O-ring positioning plate 402, of the O-ring positioning plate guide plate 403, a communication hole 4031 structure is formed in a side plate surface of the O-ring positioning plate 402 and is communicated with the O-ring positioning plate profiling groove 4031, the hole structure is located at the height of the upper end surface of the O-ring positioning plate 402, an optical fiber sensor is installed in the hole structure, and the transmission plane of the straight vibration rail 401 is equal to or slightly higher than the height of the upper end surface of the O-ring positioning plate 402. (the working principle is that after the vibration of the O-shaped ring is transmitted to the upper end surface of the O-shaped ring positioning plate 402 and is transmitted in place, the optical fiber sensor senses the existence of the O-shaped ring and sends a signal to the controller, and the controller receives the signal and controls the lifting cylinder 404 to start the lifting of the O-shaped ring positioning plate 402, so that the height of the upper plane of the O-shaped ring positioning plate is higher than that of the O-shaped ring positioning plate guide plate 403, and the O-shaped ring can be clamped conveniently)

Further, the material taking device 205 used in the moving material taking module 200 for the collar at the station of the collar feeding module 600 comprises a lifting cylinder 603, a material taking rod 604 and a material returning sleeve 605, the power output end of the lifting cylinder 603 is fixedly connected with the upper end of the material taking rod 604, the diameter of the lower end of the material taking rod 604 is slightly larger than the inner diameter of the collar, the material taking rod 604 is fixedly connected with the surface of the hollow aluminum extruded piece through an intermediate plate, and the material taking rod 604 penetrates through an inner through hole of the material returning sleeve 605 and extends out for a certain distance. (the working principle is that the material taking device 205 is driven to translate and descend under the action of the movable material taking module 200, the lifting cylinder 603 pushes the material taking rod 604 to descend for taking materials, the clamping ring is arranged in a C-shaped ring structure, so that the inner diameter of the clamping ring is enlarged, the clamping ring ascends, translates and descends, the lifting cylinder 603 drives the material taking rod 604 to ascend, the material returning sleeve 605 unloads the clamping ring from the end part of the material taking rod 604 and falls into the central hole of the body)

Further, rand presses material module 700 still includes elasticity material returned cover 703, fixes the vertical slide rail sliding block set spare at the mounting panel, press the contactless slider through-hole that passes of material pole 702, the great upper end embedding of elasticity material returned cover 703 diameter is installed in the inside shoulder hole of slider and is cup jointed in pressing the material pole 702 outside, the upper end that the elasticity material returned cover 703 outside has cup jointed the spring and the spring supports and leans on at elasticity material returned cover 703 tip lower plate face, lower extreme and leans on at inside shoulder hole up end. When the air cylinder 701 is pressed down, the pressing rod 702 is driven to press down, after the air cylinder 701 is pressed down to a certain degree, the lower plate surface of the power output end of the air cylinder 701 touches the upper end surface of the elastic material returning sleeve 703 to drive the spring to compress, the lower end surface of the elastic material returning sleeve 703 is lowered to be close to the lower end part of the pressing rod 702 to push the clamping ring to push the pressing rod 702 away from the clamping ring, and material distribution is smoothly completed.

Further, a material pressing component 704 is arranged at the position of the clamping ring material pressing module 700 on the upper surface of the upper fixing disk 1011, and the material pressing component 704 is a horizontal pushing cylinder fixed on the upper fixing disk 1011 and a U-shaped clamping groove fixed at the end of a piston shaft of the horizontal pushing cylinder. In the action process of the clamping ring pressing module, the horizontal pushing cylinder in the pressing assembly 704 acts and enables the U-shaped clamping groove at the end part of the piston shaft of the horizontal pushing cylinder to be clamped on the surface of the body, and the body is prevented from being lifted in the material returning process.

Further, a collar detection module 800 mounted on the surface of the upper fixing disc 1011 is arranged among the collar pressing module 700, the plug and nut mounting module 900, the collar detection module 800 comprises a connecting seat 801, a lifting cylinder 802, a vertical sliding rail sliding block assembly, a connecting block 803, a detection rod 804, a detection rod outer sleeve 805 and a proximity switch 806, the connecting seat 801 is fixed at a station position corresponding to the collar detection module 800 in the upper fixing disc 1011, the vertical sliding rail sliding block assembly is fixed on the vertical surface of the connecting seat 801, the connecting block 803 is fixed with a sliding block in the sliding rail sliding block assembly, the lifting cylinder 802 is fixed at the top end of the connecting seat 801 in an inverted buckle manner, a power output end and the upper end of the connecting block are fixed, the detection rod 804 is sleeved in a central hole of the detection rod outer sleeve 805, and the detection rod outer sleeve is fixedly sleeved in, the length part of the detection rod 804 extending out of the lower end of the detection rod outer sleeve 805 is provided with a stepped cylindrical surface structure (which is arranged corresponding to a stepped hole in the center of the body, so that the detection rod 804 successfully avoids a stepped hole table surface at the center of the body, the detection rod can reach the depth position of the collar mounted in the center hole of the body), the diameter of the stepped cylinder at the lowest end is smaller than the inner diameter of the collar, the length of the stepped cylinder at the lowest end is smaller than or equal to the length of the collar, the diameter of the stepped cylinder at the upper end adjacent to the stepped cylinder at the lowest end is larger than the outer diameter of the collar, the side plates of the connection block 804 at the left side and the right side of the stepped cylinder at the top end of the detection rod 804 are respectively provided with one proximity switch 806 at different heights. (the working principle is that the lifting cylinder 802 drives the connecting block 803, the detection rod 804 and the detection rod outer sleeve 805 to synchronously descend, the detection rod 804 enters the center hole of the body until the upper end surface of the end part stepped cylinder touches the upper end surface of the collar and does not continuously descend, the height of the detection rod 804 does not continuously descend along with the further descending of the lifting cylinder 802, the upper proximity switch 806 and the lower proximity switch 806 detect that no collar exists if the upper proximity switch 806 does not detect or both the proximity switches 806 do not detect, the collar is not installed in place or the collar is crushed if the upper proximity switch 806 detects the top stepped cylinder of the detection rod 804 and the lower proximity switch 806 detects, in short, the collar is determined to be installed qualified when the two proximity switches 806 on the upper side and the lower side detect the top stepped cylinder of the detection rod 804, and the collar is determined to be installed unqualified when the upper proximity switch 806 or the lower proximity switch fails, subsequent operation cannot be performed until the nut is rotated to a blanking position to be treated as waste), further, a profiling cavity matched with a reinforcing anti-slip rib outside the nut is arranged on the inner side surface of the nut upper fixing ring 110, the upper reinforcing anti-slip rib section of the nut is positioned in the inner cavity of the nut upper fixing ring 110, threaded holes are formed in the side plate surface of the nut lower fixing ring 111 along the circumferential direction at equal angles, an elastic plunger is arranged in each threaded hole, the elastic plunger is fixed in each threaded hole through external threads and consists of a spring and a collision ball connected with the end of the spring, the smooth section at the lower end of the nut is positioned in the inner cavity of the nut lower fixing ring 111, the collision ball of the elastic plunger abuts against the outer wall surface of the nut, and in order that the nut is easy to rise and offset and damage the outer wall surface of the nut, the external size of the nut is smaller than the sizes of the, the use of the elastic plunger can ensure that the screw cap cannot fall off from the inner cavity in the moving process.

Further, a piston shaft of the horizontal pushing cylinder 505 is fixed to a slider in the sliding rail slider assembly, a first lifting cylinder 501 and a second lifting cylinder 502 are indirectly fixed to an upper surface of the slider in the sliding rail slider assembly through a cylinder fixing plate 506, that is, the first lifting cylinder 501 and the second lifting cylinder 502 are fixed to the upper surface of the cylinder fixing plate 506, wherein the first lifting cylinder 501 is installed in parallel with the rectangular cylinder fixing plate 506 in the length and width directions, the second lifting cylinder 502 is fixed to a fixing groove 5061 in the upper surface of the cylinder fixing plate 506, and the fixing groove 5061 is an inclined fixing groove 5061 which forms a certain angle with the length and width directions of the rectangular cylinder fixing plate 506. The inclined design of the fixing groove 5061 has the following advantages: first, the inclined length is greater than the straight length, and the inclined fixing groove 5061 can satisfy the installation of a large-sized cylinder without increasing the size of the cylinder fixing plate 506; secondly, for the narrow and small whole equipment of installation space, above-mentioned mounting means can play the effect of avoiding a position installation.

Further, in the connector positive electrode assembling device, the O-ring positioning plate 402 processed with the cross avoiding groove 4021 faces one side of the O-ring positioning plate profiling groove 4031 in the O-ring positioning plate guiding plate 403, a U-shaped through groove 4022 communicated with the side portion is provided, the U-shaped through groove 4022 coincides with part of the cross avoiding groove 4021, and the sensing end of the optical fiber sensor installed in the hole structure is located in the U-shaped through groove 4022. The overlapping type arrangement of the U-shaped through groove 4022 and the partial cross-shaped avoiding groove 4021 does not delay the clamping of the parallel opening and closing type four-claw cylinder with the O-shaped ring avoiding position, and provides an internal space for the installation of the optical fiber sensor.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. An O-ring assembling device for a positive electrode of a connector, comprising: the device comprises a turntable module, an O-shaped ring loading module, an O-shaped ring mounting module and a movable loading module; the method is characterized in that:

the turntable module comprises a turntable, power equipment and a body positioning plate, wherein the turntable comprises an upper fixing disc and a lower turntable, the power output end of the power equipment is fixedly connected with the lower turntable to drive the lower turntable to rotate, the upper fixing disc is positioned above the lower turntable and does not rotate, the lower turntable is provided with N avoiding grooves at equal angles, N body positioning plates provided with body positioning profiling cavities are arranged at the edge of the lower turntable at equal angles along the circumferential direction, the body positioning plates are screwed on the two side plate surfaces of the avoiding grooves, the body positioning profiling cavities are positioned at the avoiding grooves, and N is a natural number which is more than or equal to the action station;

the O-shaped ring feeding module comprises a vibrating disc, a direct vibration track connected with an outlet of the vibrating disc, an O-shaped ring positioning plate and an O-shaped ring mounting assembly, wherein the O-shaped ring positioning plate is arranged at the outlet of the direct vibration track, a movable material taking module for an O-shaped ring is arranged at a station of the O-shaped ring feeding module, and a material taking device in the movable material taking module is of a structure capable of finishing ring expansion and grabbing of the O-shaped ring;

the movable material taking module comprises a connecting plate, a horizontal pushing cylinder, a sliding rail slider, a lifting cylinder and a material taking device, wherein the connecting plate is fixed on a table top through a hollow aluminum extrusion piece;

the O-shaped ring mounting module comprises a connecting plate fixed on a table top, a sliding rail sliding block assembly facing to the direction of a body positioning plate in a lower rotary table is fixed on the connecting plate, a flat push cylinder is arranged on the side plate surface of the connecting plate, a piston shaft of the flat push cylinder is fixed with a sliding block in the sliding rail sliding block assembly, a first lifting cylinder and a second lifting cylinder are directly or indirectly fixed on the upper plate surface of the sliding block in the sliding rail sliding block assembly, a four-petal O-shaped ring sleeve is fixed in a through hole of the plate surface of the first connecting plate, the first connecting plate is fixed with the lifting plate of the first lifting cylinder, an O-shaped ring separating sleeve is fixed with a through hole of the plate surface of the second connecting plate, the four-petal O-shaped ring sleeve penetrates through a plate surface hole of the second connecting plate and is concentrically arranged with the O-shaped ring separating sleeve, the second connecting plate is connected with a, The spliced poles on two sides between the third connecting plates are inboard, the vertical face of the fourth connecting plate of L shape with the lifter plate of first lift cylinder is fixed, the horizontal face of the fourth connecting plate of L shape spans second lift cylinder top, the horizontal face that the piston shaft of second lift cylinder frictionless formula passed the fourth connecting plate is fixed with third connecting plate center.

2. The O-ring assembly apparatus for a positive connector of claim 1, wherein: a cross avoiding groove is formed in the upper plate surface of the O-shaped ring positioning plate, and a material taking device used in the O-shaped ring moving material taking module in the O-shaped ring feeding module is a parallel opening and closing type four-claw cylinder.

3. The O-ring assembly apparatus for a positive connector of claim 1, wherein: the O-shaped ring feeding module further comprises an O-shaped ring positioning plate guide plate and a lifting cylinder, the cylinder body of the lifting cylinder is directly or indirectly fixed on the table top, the piston shaft of the lifting cylinder is fixed with the surface of the O-shaped ring positioning plate, the O-shaped ring positioning plate guide plate is fixedly connected with the cylinder body of the lifting cylinder through an intermediate connecting plate, an O-shaped ring positioning plate profiling groove is formed in one side, close to the O-shaped ring positioning plate, of the O-shaped ring positioning plate, an O-shaped ring positioning plate side plate is provided with a communicating pore-shaped structure communicated with the O-shaped ring positioning plate profiling groove, the pore-shaped structure is located optical fiber sensors are installed in the height of the upper end face of the O-shaped ring positioning plate and the pore-shaped structure, and the conveying plane of the direct vibration track is equal to or slightly higher than the height of the upper end face of the O-shaped ring.

4. The O-ring assembly apparatus for a positive connector of claim 1, wherein: the sliding block upper plate surface in the sliding rail sliding block component is indirectly fixed with a first lifting cylinder and a second lifting cylinder through a cylinder fixing plate, namely the first lifting cylinder and the second lifting cylinder are fixed on the upper plate surface of the cylinder fixing plate, wherein the first lifting cylinder or/and the second lifting cylinder are/is fixed in a fixing groove of the upper plate surface of the cylinder fixing plate, and the fixing groove is an inclined fixing groove which forms a certain angle with the rectangular cylinder fixing plate in the length direction and the width direction.

5. The O-ring assembly device for a positive electrode of a connector according to claim 3, wherein: the O-shaped ring positioning plate is provided with a U-shaped through groove communicated with the edge portion on one side of the O-shaped ring positioning plate profiling groove in the O-shaped ring positioning plate guide plate, the U-shaped through groove is overlapped with a part of the cross-shaped avoiding groove, and the induction end of the optical fiber sensor installed in the hole-shaped structure is located in the U-shaped through groove.

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