A rotary tooling positioning fixture

Abstract

The present invention relates to a rotary tooling positioning fixture, comprising a first turntable, a second turntable, and a third turntable, wherein the third turntable drives the first and second turntables to rotate synchronously, and a plurality of workpiece recesses are evenly arranged on the circumferential edges of each turntable, wherein the workpiece recesses are recessed toward the center of the turntable and radially open at the circumferential edge of the turntable, and a feeding mechanism feeds the parts to be assembled into the workpiece recesses respectively; a turntable cover plate is arranged circumferentially on the third turntable, and a clamping rear baffle is arranged behind the third turntable, and the first and second turntables are both provided with a material distribution plate outer guard plate to prevent the parts to be assembled from falling off radially and a part front guard plate to prevent the parts to be assembled from falling off axially; the workpiece recess of the first turntable overlaps with the workpiece recess of the third turntable at the first press-fitting station, and the workpiece recess of the second turntable overlaps with the workpiece recess of the third turntable at the second press-fitting station; and the clamping rear baffle covers the orthographic projection area of ​​the first press-fitting station and the second press-fitting station. The present invention has a very simple structure, occupies a small space and has a significant effect.

Description

Technical Field

[0001] The invention relates to the technical field of tooling and fixtures, and more specifically to a rotary tooling and positioning fixture for parts embedding and pressing assembly. Background Art

[0002] With the rising demand for automation equipment and technological progress, the positioning tooling required in the product processing process needs to meet the stability and reliability of workpiece positioning during use, and at the same time, it is necessary to make the clamping process simple and easy to operate quickly to avoid complex structures and high costs. Because of its compactness and high reliability of repeated positioning, the rotary disc-shaped positioning fixture is widely used in actual production. The existing disc-shaped positioning fixtures are mostly driven by servo motors and clamped and positioned with elastic parts such as springs. A set of equipment often requires multiple tooling and multiple elastic clamps, which is costly. Taking the roller brush used for paint roller coating as an example, in the actual processing process of the roller brush production, it is necessary to assemble the inner tube of the brush sleeve with the inner clamp. The common processing methods for the processing of such accessories include manual or machine processing. For manual processing methods, its processing efficiency cannot match the production requirements, and its processing accuracy and product consistency cannot be guaranteed. Therefore, in the existing processing, the insertion machine is often used for processing such accessories. The insertion equipment basically includes a feeding system, a clamping mechanism, a material distribution plate, an insertion drive system, and a material unloading mechanism. The material distribution plate has multiple stations, which are respectively connected to the feeding and unloading systems to complete the insertion action in a coherent and orderly manner. At present, the clamping and positioning of the material distribution plates of each part are mainly based on spring compression, and the rotation drive systems of the material distribution plates are independent of each other and are completed by different drive components. Therefore, the existing brush cover production equipment has the disadvantages of complex control system, large equipment and high control accuracy requirements. Summary of the invention

[0003] The object of the present invention is to provide a rotary fixture positioning clamp, which is suitable for axial insertion and pressing assembly of rod-shaped or cylindrical parts with smaller volume, so as to overcome the shortcomings of the prior art.

[0004] The technical solution of the present invention to solve its technical problem is: a rotary tool positioning fixture, comprising a first turntable, a second turntable, and a third turntable, the third turntable drives the first and second turntables to rotate synchronously, and is characterized in that: a plurality of workpiece recesses are evenly arranged on the circumferential edge of each turntable, the workpiece recesses are recessed toward the center of the turntable and radially open at the circumferential edge of the turntable, and the feeding mechanism feeds the parts to be assembled into the workpiece recesses respectively; a turntable cover plate is circumferentially arranged on the third turntable, and a clamping rear baffle is arranged behind the third turntable, and the first and second turntables are both provided with a dividing plate outer guard plate to prevent the parts to be assembled from falling off radially, and a part front guard plate to prevent the parts to be assembled from falling off axially; the workpiece recess of the first turntable overlaps with the workpiece recess of the third turntable at the first pressing station, and the workpiece recess of the second turntable overlaps with the workpiece recess of the third turntable at the second pressing station; the clamping rear baffle covers the positive projection area of ​​the first pressing station and the second pressing station.

[0005] The third turntable includes a disc connecting block, a large gear disc, and a bristle sleeve inner tube disc. The disc connecting block fixedly connects the large gear disc and the bristle sleeve inner tube disc. The large gear disc is provided with an internal gear. The rear sides of the first and second turntables are both provided with driven gears, and the driven gears are meshed with the internal gears of the large gear disc.

[0006] The first, second and third turntables are arranged upright, and the feeding port of each turntable is located on or above the horizontal center line of each turntable. The first pressing station and the second pressing station are arranged on the same side of the vertical center line of the third turntable.

[0007] The outer guard plate of the material distribution disk has an arc-shaped working end surface, and the working end surface extends adaptively from the feeding openings of the first and second rotating disks along the outer circle of the rotating disks to the first pressing station and the second pressing station respectively.

[0008] The part front guard plate is installed on the front side of the plate body of the outer guard plate of the material distribution plate, and the edge of the part front guard plate passes over the working end surface of the part front guard plate to cover part or all of the workpiece recesses of the first and second turntables.

[0009] The turntable cover plate includes two parallel cover strips, which are curved along the outer circumference of the third turntable. The cover strips respectively cover the outer circumference of the large gear plate and the inner tube plate of the brush sleeve, and extend from the feed port of the third turntable to the second pressing station. A cover guardrail is arranged at the front end of the turntable cover plate along the edge of the cover strip.

[0010] The two cover strips are connected by a strip connecting block, and the turntable cover is provided with a T-shaped guardrail near the second pressing station.

[0011] The edge guard includes an edge guard mounting plate, an edge guard baffle, and an edge guard reinforcement plate. The edge guard mounting plate is fixed on the clamping rear baffle. The edge guard baffle is adapted to extend from the end close to the clamping rear baffle along the edge of the third turntable toward the feeding port of the third turntable, thereby covering part or all of the workpiece recess of the third turntable.

[0012] The beneficial effects of the present invention are:

[0013] 1) The rotary tooling positioning fixture of the present invention is provided in a workpiece recess, so that all the parts to be assembled do not need to use a spring clamping mechanism. Protective plates are provided at the feeding to the pressing position of the first and second turntables to effectively prevent the parts from falling off during the rotation of the turntables. The structure is very simple, occupies little space and has a significant effect.

[0014] 2) The first, second and third turntables are gear-engaged for transmission, and there is no need to set servo motors on the respective turntables. Through a reasonable transmission ratio, the workpiece recess of the first turntable overlaps with the workpiece recess of the third turntable at the first press-fitting station, and the workpiece recess of the second turntable overlaps with the workpiece recess of the third turntable at the second press-fitting station, thereby realizing the alignment and positioning of the parts press-fitting. The use of the rotary tooling positioning fixture of the present invention for assembling the bristle sleeve can abandon the processing method of separate processes and separate controls that the current similar equipment needs to adopt, and the equipment occupies a small space, saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the rotary tooling positioning fixture of the present invention.

[0016] Figure 2 It is a schematic diagram of the feeding port and the pressing station position of the rotary tooling positioning fixture.

[0017] Figure 3 The utility model is a front view of the structure of the brush cover inner clamp inserting machine using the present invention.

[0018] Figure 4 It is a structural schematic diagram of the turntable assembly and the pressure rod assembly.

[0019] Figure 5 It is a schematic diagram of the structure of the outer guard plate of the inner clamping material distribution tray and its inner clamping guard plate.

[0020] Figure 6 It is a schematic diagram of the gear meshing structure of the turntable assembly.

[0021] Figure 7 It is a schematic diagram of the positional relationship between the turntable assembly, the supporting side plates, and the feed stop block.

[0022] Figure 8 It is a schematic diagram of the structure of the first and second clamping rear baffles.

[0023] Fig. 9The utility model is a top view of the brush cover inner clip insertion machine using the present invention.

[0024] Fig.10 It is a structural cross-sectional view of the brush sleeve inner tube after assembly.

[0025] Fig.11 It is a schematic diagram of the structure of a lid material distribution tray and its lid material distribution tray outer guard plate.

[0026] Fig.12 It is a schematic diagram of the installation structure of the outer guard plate of the inner clamping distribution tray.

[0027] Fig.13 It is a schematic diagram of the structure of the blanking sheet and the blanking chute.

[0028] Fig.14 It is a structural schematic diagram of the cam crankshaft mechanism and the pressure rod assembly.

[0029] Fig.15 It is a schematic diagram of the installation structure of the photoelectric sensor.

[0030] Fig.16 It is a schematic diagram of the edge protection structure.

[0031] Fig.17 It is a schematic diagram of the structure of the slide bar mounting plate.

[0032] Fig.18 It is a schematic diagram of the turntable cover structure.

[0033] Fig.19 It is a structural schematic diagram of the disc connecting block.

[0034] In the accompanying drawings, the reference numerals represent as follows: motor 1, gear box 2, divider 3, cam crankshaft mechanism 4, turntable assembly 5, pressure rod assembly 6, support system 7, bottom plate 9, assembly system 10, brush sleeve inner tube 11, tube inner clamp 12, inner tube cover 13, cam 41, fisheye joint 42, adjusting screw 43, disc connecting block 50, large gear disc 51, brush sleeve inner tube disc 52, inner clamp dividing disc 53, inner Pipe cover material distribution disc 54, slide floating connecting plate 60, slide pressure rod mounting plate 61, slide connecting rod 62, slide reinforcing connecting rod 63, clamp push needle 66, cover pressing rod 67, main bearing seat plate 71, connecting rod bearing seat plate 72, clamping rear baffle 73, cover material distribution disc outer guard plate 74, support side plate 75, feed stop block 76, inner clamp material distribution disc outer guard plate 77, turntable cover plate 78, edge guard 79, M12 light Electric sensor 81, M4 photoelectric sensor 82, through slot 90, blanking sheet 91, blanking slot 92, fastening screw 95, frame 100, vibration plate 101, vibration plate 102, vibration plate 103, first feed port 104, second feed port 105, third feed port 106, first press-fit station 107, second press-fit station 108, inner clamping material dividing disc driven gear 531, inner tube cover material dividing disc 541, bearing seat 711, first clamping rear baffle 731, second clamping rear baffle 732, inner tube cover guard plate 741, inner tube cover feeding sleeve 742, inner tube cover supporting plate 743, inner clamp guard plate 771, inner clamp feeding sleeve 772, cover plate strip 781, cover plate guardrail 782, strip connecting block 783, T-shaped guardrail 784, edge guard mounting plate 791, edge guard baffle 792, edge guard reinforcement plate 793. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] See also Figure 1-19The present invention discloses a rotary tooling positioning fixture, comprising a first turntable, a second turntable, and a third turntable, wherein the third turntable drives the first and second turntables to rotate synchronously, and is characterized in that: a plurality of workpiece recesses are evenly arranged on the circumferential edge of each turntable, wherein the workpiece recesses are recessed toward the center of the turntable and radially open at the circumferential edge of the turntable, and a feeding mechanism feeds the parts to be assembled into the workpiece recesses respectively; a turntable cover plate 78 is circumferentially arranged on the third turntable, and a clamping rear baffle 73 is arranged behind the third turntable, and the first and second turntables are both provided with a material distribution plate outer guard plate for preventing the parts to be assembled from falling off radially and a part front guard plate for preventing the parts to be assembled from falling off axially; the workpiece recess of the first turntable overlaps with the workpiece recess of the third turntable at the first pressing station, and the workpiece recess of the second turntable overlaps with the workpiece recess of the third turntable at the second pressing station; the clamping rear baffle 73 covers the positive projection area of ​​the first pressing station and the second pressing station.

[0037] The first turntable is an inner clamp material separation disc 53, the second turntable is an inner tube cover material separation disc 54, and the third turntable includes a disc connection block 50, a large gear disc 51, and a brush sleeve inner tube disc 52. The disc connection block 50 fixes the large gear disc 51 with the brush sleeve inner tube disc 52. The large gear disc is provided with an internal gear. The rear sides of the first and second turntables are provided with driven gears, and the driven gears are meshed with the internal gears of the large gear discs. The large gear disc 51, the brush sleeve inner tube disc 52, the inner clamp material separation disc 53, and the inner tube cover material separation disc 54 are all arranged upright, and the feed ports of each turntable are located on or above the horizontal center line of each turntable. The first press-fitting station and the second press-fitting station are arranged on the same side of the vertical center line of the third turntable.

[0038] The outer guard plate of the material distribution plate includes a cover material distribution plate outer guard plate 74 and an inner clamp material distribution plate outer guard plate 77, both of which have arc-shaped working end surfaces. The working end surfaces extend from the feeding ports of the first and second turntables along the outer circles of the turntables to the first pressing station and the second pressing station respectively.

[0039] The part front guard plate includes an inner tube cover guard plate 741 and an inner clamp guard plate 771, which are installed on the front side of the plate body of the outer guard plate of each material distribution plate. The edge of the part front guard plate passes over the working end surface of the part front guard plate to block part or all of the workpiece recesses of the first and second turntables.

[0040] The turntable cover plate 78 includes two parallel cover plate strips 781, which are curved along the outer circumference of the third turntable. The cover plate strips cover the outer circumference of the large gear plate 51 and the inner tube disc 52 of the brush sleeve respectively, and extend from the feeding port of the third turntable to the second press-fitting station. A cover plate guardrail 782 is provided along the edge of the cover plate strip at the front end of the turntable cover plate. The two cover plate strips are connected by a strip connecting block 783, and the turntable cover plate is provided with a T-shaped guardrail 784 near the second press-fitting station.

[0041] The edge guard 79 includes an edge guard mounting plate 791, an edge guard baffle 792, and an edge guard reinforcement plate 793. The edge guard mounting plate is fixed on the clamping rear baffle 73. The edge guard baffle is adapted to extend from one end close to the clamping rear baffle 73 along the edge of the brush sleeve inner tube disc 52 toward the third turntable inlet, thereby shielding part or all of the workpiece recess of the brush sleeve inner tube disc 52. It is used to position and clamp the brush sleeve inner tube 11, the tube inner clamp 12, and the inner tube cover 13, thereby supporting the embedded installation of the brush sleeve inner tube 11, the tube inner clamp 12, and the inner tube cover 13.

[0042] The rotary tooling positioning fixture is applied to a brush cover inner clamp insertion machine. The rotary tooling positioning fixture is further described in detail below in combination with the structure and working principle of the brush cover inner clamp insertion machine.

[0043] The brush sleeve inner clip insertion machine includes a frame 100, a feeding mechanism, an assembly system 10, and a discharging mechanism. Among them, the feeding mechanism is composed of three sets of vibration plates (see the labels 101, 102, and 103 respectively) and a feeding guide rail, which respectively transmits the brush sleeve inner tube 11, the inner tube cover 13, and the tube inner clip 12 to the fixture of the assembly system, and the assembly system performs the insertion processing. The discharging mechanism is composed of a blanking piece 91 and a blanking trough 92 installed on the bottom plate 9. The bottom plate is fixed on the plane of the frame, and a through slot 90 is opened in the middle of the bottom plate, and the assembled parts are discharged from the through slot. The assembly system 10 includes a motor 1, a gear box 2, a divider 3, a cam crankshaft mechanism 4, a turntable assembly 5, a pressure rod assembly 6, and a support system 7. The motor 1, the gear box 2, and the divider 3 are connected in sequence. The output power of the motor 1 is transmitted to the divider 3 after being decelerated by the gear box. The crankshaft end of the divider 3 is connected to the cam crankshaft mechanism 4 and outputs constant speed rotation power to the cam crankshaft mechanism 4. The intermittent transmission mechanism of the divider 3 causes the divider flange to rotate intermittently.

[0044] The pressure rod assembly 6 includes a slide floating connecting plate 60, a slide pressure rod mounting plate 61, a slide connecting rod 62, and a slide reinforcing connecting rod 63. Two slide connecting rods 62 and one slide reinforcing connecting rod 63 are respectively fixedly connected to the slide floating connecting plate 60 and the slide pressure rod mounting plate 61. The slide floating connecting plate 60 is connected to the cam crankshaft mechanism 4. The continuous movement of the cam crankshaft mechanism 4 causes the slide pressure rod mounting plate 61 to form a reciprocating movement. The slide pressure rod mounting plate 61 is installed with a pressure clamp pushing needle 66 and a pressure cover rod 67. During the movement of the slide pressure rod mounting plate 61, the pressure clamp pushing needle 66 and the pressure cover rod 67 synchronously push the inner tube clamp and the inner tube cover into the inner tube of the brush sleeve. The cam crankshaft mechanism 4 includes a cam 41, a fisheye joint 42, and an adjusting screw 43. The two fisheye joints 42 are respectively connected to the two ends of the adjusting screw 43, so that the total installation length of the cam crankshaft mechanism can adapt to the position adjustment during the installation of the unit. The cam 41 is installed on the output shaft of the divider 3, one end of the cam 41 is hinged to the fisheye joint 42, and the other fisheye joint 42 is hinged to the slide floating connecting plate 60.

[0045] The turntable assembly 5 includes a disc connection block 50, a large gear disc 51, a brush sleeve inner tube disc 52, an inner clamp material distribution disc 53, and an inner tube cover material distribution disc 54. The disc connection block 50 fixedly connects the large gear disc 51 with the brush sleeve inner tube disc 52, and the disc connection block 50 is evenly distributed with equal arcs around the circumference. The brush sleeve inner tube disc 52 is installed on the divider flange, and the divider drives the brush sleeve inner tube disc 52 to make intermittent rotational motion. The inner clamp material distribution disc driven gear 531 and the inner tube cover material distribution disc 54 are respectively provided on the inner clamp material distribution disc 53 and the inner tube cover material distribution disc 54, and the two driven gears are respectively meshed with the large gear disc 51. Therefore, when the large gear disc 51 rotates, the inner clamp material distribution disc 53 and the inner tube cover material distribution disc 54 rotate synchronously.

[0046] The support system 7 includes a main bearing seat plate 71, a connecting rod bearing seat plate 72, a clamping rear baffle 73, a cover material distribution plate outer guard plate 74, a supporting side plate 75, a material feeding stopper block 76, and an inner clamp material distribution plate outer guard plate 77. Two bearing seats 711 are respectively arranged on the main bearing seat plate 71, and bearings are arranged on the bearing seats. The rotating shafts of the upper and lower material distribution plates of the turntable assembly 5 are arranged in the bearings, so that the two material distribution plates can rotate smoothly and steadily. The connecting rod bearing seat plate 72 is installed on the bottom plate, which includes two straight plates arranged vertically and parallel to each other, on which bearing seats and bearings are arranged. The bearings support two slide connecting rods 62 to move back and forth on the connecting rod bearing seat plate 72. The clamping rear baffle 73 includes a second clamping rear baffle 732 close to the brush sleeve inner tube disc 52 and a first clamping rear baffle 731 slightly away from the brush sleeve inner tube disc 52. The two baffles are suitable for matching with brush sleeves of different lengths. When the brush sleeve is long, the first clamping rear baffle 731 is used, and when the brush sleeve is short, the second clamping rear baffle 732 is used. The clamping rear baffle 73 is arranged behind the brush sleeve inner tube disc 52 and covers the assembly position of the inner tube cover and the inner tube clamp. When the inner tube cover and the inner tube clamp are pushed toward the inner tube of the brush sleeve by the slide pressure rod mounting plate 61, the clamping rear baffle 73 bears the thrust transmitted by the inner tube cover and the inner tube clamp to prevent the inner tube of the brush sleeve from detaching from the brush sleeve inner tube disc 52. The first clamping rear baffle 731 is provided with a fixing groove 7311, which is divided into two parts, the upper and lower parts. The first clamping rear baffle 731 is fixedly mounted on the divider 3 with its side and fixed on the bottom plate 9 with its bottom part by means of a fastening screw 95 in the fixing groove 7311. Considering the feasibility of the long brush sleeve inner tube falling from the through groove 90, when assembling the short brush sleeve inner tube, the second clamping rear baffle 732 needs to be suspended above the through groove 90. Therefore, the second clamping rear baffle 732 is detachably mounted on the first clamping rear baffle 731 by means of a distance limiting sleeve 733 and a fastening screw. Similarly, the first clamping rear baffle 731 is also detachably fixed on the divider 3 and the bottom plate 9 to accommodate the assembly and processing of brush sleeve inner tubes of different lengths.

[0047] The gears on the back of the inner clamp dividing disc 53 and the inner tube cover dividing disc 54 mesh with the internal teeth of the large gear disc 51, so that the two rotate synchronously with the inner tube disc 52 of the brush sleeve. The inner clamp dividing disc 53 and the inner tube cover dividing disc 54 have the same diameter and three workpiece recesses are equidistantly arranged on the edge of the disc. The workpiece recesses are used to accommodate the inner tube covers and inner tube clamps for unloading. The workpiece recesses have openings in the radial direction of the disc. In order to keep the inner tube covers and inner tube clamps in the correct position after unloading, inner clamp dividing disc outer guard plates 77 and cover dividing disc outer guard plates 74 are respectively arranged on the sides of the inner clamp dividing disc 53 and the inner tube cover dividing disc 54. A material distribution group pad is provided on the bottom plate 9, and a cover material distribution plate outer guard plate 74 is fixedly installed on the plate. The working end face of the cover material distribution plate outer guard plate 74 is arc-shaped, and its working end face starts from the unloading station of the cover material distribution plate and covers between the press-fitting stations of the cover material distribution plate. In addition, a sensor mounting part 80 is installed on the top of the cover material distribution plate outer guard plate 74, and a cover sensor (using an M4 photoelectric sensor 82) is installed on the cover sensor mounting part to detect whether an inner tube cover enters the workpiece recess. Similarly, an inner clamp material distribution plate outer guard plate 77 is provided on the left side of the inner clamp material distribution disc 53, and the working end face of the inner clamp material distribution plate outer guard plate 77 is arc-shaped, and its working end face extends in an arc shape from the unloading station of the inner clamp material distribution disc to the press-fitting station of the cover material distribution disc. The curvature of the working end face is adapted to the disc, so that the inner tube cover and the inner tube clamp maintain a proper position during the movement of the disc. A sensor through hole is provided on the wall of the outer guard plate 77 of the inner clamp material dividing plate corresponding to the feeding station, and the inner clamp sensor (using the M4 photoelectric sensor 82) is inserted into the sensor through hole to detect whether the inner clamp enters the workpiece recess. Similarly, a brush sleeve inner tube sensor (using the M12 photoelectric sensor 81) is also provided to detect whether the brush sleeve inner tube enters the workpiece recess, and the mounting piece of the M12 photoelectric sensor 81 is fixed on the top surface of the divider 3.

[0048] In order to prevent the inner tube cover and the tube clamp from accidentally falling off, an inner clamp guard plate 771 is installed on the outer guard plate 77 of the inner clamp dividing plate, and an inner tube cover guard plate 741 is installed on the outer guard plate 74 of the lid dividing plate. The shapes of the main parts of the two guard plates are similar to the guard plates of the two dividing plates, and both guard plates extend toward the dividing plates. Therefore, their working surfaces block the partial edges of the two dividing plates. In this way, the rear side of the inner tube cover and the tube clamp in the dividing plate is stopped by the large gear plate 51, and the front side is stopped by the inner tube cover guard plate 741 or the inner clamp guard plate 771.

[0049] In order to ensure accurate feeding, an inner tube cover feeding sleeve 742 and an inner clamp feeding sleeve 772 are respectively provided at the feeding ports of the two material distribution trays. The inner tube cover feeding sleeve 742 is installed on the outer guard plate 74 of the cover material distribution tray, and it has a fence that partially surrounds the circumference of the inner tube cover. The inner clamp feeding sleeve 772 is installed on the outer guard plate 77 of the inner clamp material distribution tray, and it has a tube sleeve suitable for inserting the inner clamp, and the side wall of the tube sleeve is open. An inner tube cover supporting plate 743 is also installed at the bottom of the outer guard plate 74 of the cover material distribution tray, and the top of the inner tube cover supporting plate 743 has an arc-shaped recessed portion, which is adapted to the cover pressing rod 67 to make the press-fitting of the inner tube cover more stable.

[0050] A supporting side plate 75 is fixedly mounted on the main bearing seat plate 71 by screws, and a feed stop block 76 is mounted on the supporting side plate 75 . An inner material distribution tray outer guard plate 77 is fixedly mounted on the feed stop block 76 by screws, thereby realizing the installation and positioning of the inner material distribution tray outer guard plate 77 .

[0051] The blanking piece 91 is installed on the bottom plate 9 at the edge of the blanking chute 92. It has a tongue piece extending obliquely upward. The height of the end of the tongue piece is roughly the same as the height of the top of the inner tube of the brush sleeve at the blanking position. When the assembled inner tube of the brush sleeve rotates to the lowest position with the large gear plate 51 and the inner tube disc 52 of the brush sleeve, the end of the tongue piece is inserted into the inner tube of the brush sleeve, and the inner tube of the brush sleeve is then pushed downward and falls down, and the material is discharged through the blanking chute 92.

[0052] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A rotary fixture positioning fixture, comprising a first turntable, a second turntable, and a third turntable, wherein the third turntable drives the first and second turntables to rotate synchronously, characterized in that: A number of workpiece recesses are evenly arranged on the circumferential edge of each turntable, which are recessed toward the center of the turntable and radially open at the circumferential edge of the turntable, and the feeding mechanism feeds the parts to be assembled into the workpiece recesses respectively; a turntable cover plate is circumferentially arranged on the third turntable, and a clamping rear baffle is arranged behind the third turntable, and the first and second turntables are both provided with a dividing plate outer guard plate to prevent the parts to be assembled from falling off radially, and a part front guard plate to prevent the parts to be assembled from falling off axially; the workpiece recess of the first turntable overlaps with the workpiece recess of the third turntable at the first pressing station, and the workpiece recess of the second turntable overlaps with the workpiece recess of the first turntable at the second pressing station. The workpiece recesses of the three turntables overlap; the pressing rear baffle covers the positive projection area of ​​the first pressing station and the second pressing station; the third turntable includes a disc connecting block, a large gear disc, and a brush sleeve inner tube disc, the disc connecting block fixes the large gear disc with the brush sleeve inner tube disc, the large gear disc is provided with an internal gear, and the rear sides of the first and second turntables are provided with driven gears, and the driven gears are meshed with the internal gears of the large gear disc; the first, second and third turntables are arranged upright, and the feeding ports of each turntable are located on the horizontal center line of each turntable or above the horizontal center line, the first pressing station and the second pressing station The first and second turntables are provided with a plurality of cover strips, each of which is ... The gear plate and the brush sleeve inner tube disc are on the outer circumference side, and extend from the feed port of the third turntable to the second pressing station, and a cover guardrail is arranged at the front end of the turntable cover along the edge of the cover strip; the two cover strips are connected by a strip connecting block, and the turntable cover is provided with a T-shaped guardrail near the second pressing station; it also includes an edge guard, which includes an edge guard mounting plate, an edge guard baffle, and an edge guard reinforcement plate. The edge guard mounting plate is fixed on the clamping rear baffle, and the edge guard baffle is adapted to extend from the end close to the clamping rear baffle along the edge of the third turntable toward the feed port of the third turntable, thereby covering part or all of the workpiece recess of the third turntable.

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