A tapping machine special for profile cabinet iron tee joint connecting piece

Abstract

The present application relates to iron tee manufacturing technical field, disclose a kind of profile cabinet iron tee angle connecting piece special tapping machine, including the feeding device being fixed on rack, tapping device, turnover device and discharging device, tapping device includes the workpiece positioning seat being fixed on rack, rectangular slot with upside and front side opening and the accommodation slot being formed in workpiece positioning seat and passing through the middle part of rectangular slot;The upper side of rectangular slot is equipped with double tap tapping mechanism, the right side of accommodation slot is equipped with single tap tapping mechanism;Rectangular slot rear wall is formed with accommodation hole, the rear side of accommodation hole is equipped with cylinder, the piston rod of cylinder is opposite accommodation hole, and cylinder is fixed on rack. The workpiece can be automatically realized turnover and twice tapping of workpiece by tapping device and turnover device, and the tapping work of six holes of workpiece can be automatically completed;The feeding work and discharging work of workpiece can be automatically completed by feeding device and discharging device, and the processing efficiency of workpiece can be effectively improved, and production cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of iron tee joint manufacturing, in particular to a special tapping machine for profile cabinet iron tee joint corner connecting piece. BACKGROUND

[0002] The iron tee joint is a corner connecting piece of a profile cabinet such as an electrical cabinet, and the authorized announcement No. CN 218830945 U discloses a cabinet tee joint corner connecting piece, which comprises an integral connecting block and three corner connecting pieces fixed on the integral connecting block, and the three corner connecting pieces are welded with the integral connecting block to form a whole. Figure 9 As shown in the drawing, the corner connecting piece is a column with a rounded square cross section, and six vertical holes and six horizontal holes are arranged on the corner connecting piece, wherein the first, third and fifth holes in the two groups of holes are threaded holes. The tapping work of the existing corner connecting piece is generally performed manually by a drilling machine, and six times of tapping are required for one workpiece to complete the machining, which has low tapping efficiency and is prone to missing tapping and other problems, and the production cost such as labor cost is high. SUMMARY

[0003] The purpose of the present application is to provide a special tapping machine for profile cabinet iron tee joint corner connecting piece, which can automatically realize the overturning of the workpiece and twice tapping of the workpiece through the tapping device and the overturning device, and can automatically complete the tapping work of six holes of the workpiece.

[0004] The feeding and discharging work of the workpiece can be automatically completed through the feeding device and the discharging device, which can effectively improve the machining efficiency of the workpiece and greatly reduce the production cost.

[0005] The above technical purpose of the present application is realized by the following technical scheme:

[0006] A special tapping machine for profile cabinet iron tee joint corner connecting piece, comprising a feeding device fixed on a rack, a tapping device, an overturning device and a discharging device, wherein the tapping device comprises a workpiece positioning seat fixed on the rack, and a rectangular slot with an upper side and a front side opening and a clearance slot penetrating the middle part of the rectangular slot are formed on the workpiece positioning seat; a double tap tapping mechanism is arranged above the rectangular slot, and a single tap tapping mechanism is arranged on the right side of the clearance slot.

[0007] A clearance hole is formed on the rear side wall of the rectangular slot, a gas cylinder is arranged on the rear side of the clearance hole, the piston rod of the gas cylinder is opposite to the clearance hole, and the gas cylinder is fixed on the rack. The feeding device, the tapping device, the overturning device and the discharging device are controlled by a controller, and the controller controls the extension and contraction of the gas cylinder.

[0008] Through the technical scheme, the workpiece enters the rectangular groove of the tapping device through the feeding device, then the double tap tapping mechanism taps the first and fifth holes in the vertical direction of the workpiece, and the single tap tapping mechanism taps the third hole in the horizontal direction of the workpiece, after tapping is completed, the turnover device turns the workpiece by 90 degrees and inserts it into the rectangular groove again, then the double tap tapping mechanism taps the first and fifth holes in the original horizontal direction of the workpiece, and the single tap tapping mechanism taps the third hole in the original vertical direction of the workpiece, after tapping is completed, the piston rod of the cylinder extends to separate the workpiece from the rectangular groove and push it to the discharging device; the double tap tapping mechanism and the single tap tapping mechanism can quickly complete the tapping work of the first, third and fifth holes in the vertical direction and the horizontal direction of the workpiece, and will not be missed. It can also automatically feed and discharge, which can greatly improve the tapping efficiency of the workpiece, i.e. iron tee joint accessories.

[0009] The application further provides that the double tap tapping mechanism comprises a first driving box body fixed on the rack, a pair of front and rear first guide rails arranged in the first driving box body, a lifting block slidably connected to the pair of first guide rails, a screw rod arranged vertically and screwed to the middle of the lifting block, the screw rod being rotatably connected to the upper and lower support plates through bearings, the support plates being fixedly connected to the first driving box body, and the upper support plate being fixed with a first servo motor for driving the screw rod to rotate;

[0010] Two vertically arranged spline rods are hingedly connected to the lifting block through bearings, a first gear is connected to the middle of each spline rod through spline connection, the two first gears are rotatably connected to a base plate, and the base plate is fixed to the middle and lower part of the first driving box body; one side of each of the two first gears is engaged with a second gear, the second gear is fixed to the motor shaft of a second servo motor, and the second servo motor is fixed to the base plate.

[0011] The spline rod passes through the lower extending end of the first linear bearing and is fixed with a first tapping chuck, and the first tapping chuck is fixed with a first tap; and the first linear bearing is inserted into and fixed to the bottom of the first driving box body. The first servo motor and the second servo motor are electrically connected to the controller.

[0012] Through the technical scheme, the first servo motor drives the screw rod to rotate, the screw rod drives the lifting block to move downward, the lifting block drives the two spline rods to move downward, the spline rods drive the first taps to move downward through the first tapping chucks; at the same time, the second servo motor drives the second gear to rotate, the second gear drives the two first gears to synchronously rotate, and the two first gears drive the corresponding spline rods to rotate through spline, so that the spline rods move downward while rotating, thereby completing the corresponding tapping work; after the first tap taps to the bottom, the first servo motor and the second servo motor are reversed, and the first tap rotates away from the workpiece.

[0013] The present invention is further configured such that: the single tap tapping mechanism includes a second drive housing fixed on the frame, a second guide rail arranged in the left and right direction is fixed inside the second drive housing, a moving block is rotatably connected on the second guide rail, a drive rod arranged in the horizontal direction is rotatably connected inside the moving block, a second tapping chuck is fixed at the left protruding end of the drive rod passing through the second linear bearing, a second tap is fixed on the second tapping chuck, and the second linear bearing is inserted into and fixed at the left end of the second drive housing;

[0014] The right end of the drive rod is fixed with a spline shaft coaxial with it. The spline shaft is connected to a third gear via a spline. The third gear is rotatably connected to a second support plate. The second support plate is fixedly connected to a second drive housing. A third servo motor is fixed on the second support plate. A fourth gear is fixed on the motor shaft of the third servo motor. The fourth gear meshes with the third gear.

[0015] A rack is formed on the moving block, and the rack meshes with a fifth gear. The fifth gear is fixed on the motor shaft of the fourth servo motor, which is fixed inside the second drive housing. Both the fourth and third servo motors are electrically connected to the controller.

[0016] Through the above technical solution, the third servo motor drives the fourth gear to rotate, the fourth gear drives the third gear to rotate, the third gear drives the spline shaft to rotate via the spline, the spline shaft drives the drive rod to rotate, and the drive rod drives the second tap to rotate via the second tapping chuck; at the same time, the fourth servo motor drives the fifth gear to rotate, the fifth gear drives the moving block to move to the left via the rack, and the moving block drives the drive rod to move to the left, so that the drive rod moves while rotating, thereby performing tapping work on the workpiece; when the tap reaches the bottom, the third servo motor and the fourth servo motor simultaneously reverse their directions, and the second tap rotates and disengages from the workpiece.

[0017] The present invention is further configured such that: the feeding device includes a feeding slide with the left side higher than the right side, and two limiting guide rods equidistant from the feeding slide; the limiting guide rods are fixedly connected to the feeding slide, and the feeding slide is fixed on the frame;

[0018] A feeding block is provided below the right end of the feeding chute. A rectangular slot is formed at the right end of the feeding block. The bottom of the feeding block is slidably connected to a third guide rail arranged in the left and right directions. The feeding block is fixed to the end of the telescopic rod of the first servo telescopic cylinder. The first servo telescopic cylinder and the third guide rail are fixed on the frame.

[0019] The feeding block is located in front of the workpiece positioning seat.

[0020] The flipping device includes a four-jaw chuck, which is fixed on the rotating disk of a rotary cylinder. The rotary cylinder is fixed on the two piston rods of a double-rod cylinder, which is fixed on a movable seat. A second cylinder is fixed on the movable seat, and the second cylinder is located to the left of the double-rod cylinder and directly opposite the rectangular slot.

[0021] The movable seat is slidably connected to a fourth guide rail arranged in the left-right direction. The movable seat is fixed to the end of the telescopic rod of the second servo telescopic cylinder. The second servo telescopic cylinder and the fourth guide rail are fixed to the frame. The controller controls the first servo telescopic cylinder, the second servo telescopic cylinder, the second cylinder, the double-rod cylinder, the rotary cylinder, and the four-jaw chuck.

[0022] With the above technical solution, the workpiece is put in from the top of the feeding slide, and multiple workpieces can be put in at one time. Then, by setting the left side of the feeding channel to be higher than the right side, the workpiece can automatically slide to the right and down. The first servo telescopic cylinder drives the feeding block to move to the left. When the rectangular slot moves to the bottom of the workpiece on the feeding slide, the bottom workpiece automatically enters the rectangular slot.

[0023] Then, after the workpiece on the workpiece positioning seat is finished and pushed away from the rectangular slot by the cylinder, the first servo telescopic cylinder drives the feeding block to move to the right. The feeding block moves the workpiece on the feeding block to the right and moves to the front of the rectangular slot. Then, the piston rod of the second cylinder extends, pushing the workpiece on the feeding block backward into the rectangular slot. The rear side wall of the rectangular slot can position the workpiece. The piston rod of the second cylinder returns to its original position. Then, the double tapping mechanism and the single tapping mechanism tap the corresponding holes on the workpiece. At the same time, the feeding block moves to the left and returns to its original position, and another workpiece enters the rectangular slot.

[0024] After the double-tapping mechanism and the single-tapping mechanism complete one tapping operation, the second servo telescopic cylinder moves the moving seat to the left a certain distance, aligning the four-jaw chuck with the workpiece in the rectangular slot. Then, the double-rod cylinder moves the rotary cylinder forward, which in turn moves the four-jaw chuck to the front end of the rectangular slot. The piston rod of the cylinder then extends, pushing the workpiece, which has undergone one tapping operation, into the four-jaw chuck. The four-jaw chuck clamps the workpiece. Next, the double-rod cylinder moves the four-jaw chuck backward, disengaging the workpiece from the rectangular slot. Finally, the rotary cylinder rotates the four-jaw chuck 90 degrees, and the four-jaw chuck pulls the workpiece... The workpiece is rotated 90 degrees, and then the double-rod cylinder drives the four-jaw chuck forward again. The four-jaw chuck inserts the rotated workpiece back into the rectangular slot. Then the four-jaw chuck releases the workpiece and moves back to reset. The second servo telescopic cylinder drives the moving seat to move to the right to reset. The piston rod of the second cylinder extends to push the workpiece in the rectangular slot back to position it. Then the double tapping mechanism and the single tapping mechanism perform secondary tapping on the workpiece. After the workpiece is tapped twice, all six screw holes on the workpiece are processed. Then the piston rod of the cylinder extends to push the processed workpiece to the discharge device to complete the automatic discharge.

[0025] The present invention is further configured such that: both the feeding chute and the limiting guide rod include an inclined section that is higher on the left and lower on the right, an arc transition section and a vertical section;

[0026] A reguide limiting sleeve is fixed on the vertical section of the limiting guide rod;

[0027] The reguide limiting sleeve includes a tapered portion and a cylindrical portion arranged with a smaller upper part and a larger lower part. The diameter of the small end of the tapered portion is equal to the outer diameter of the limiting guide rod. The minimum distance between the cylindrical portion and the feed slide is matched with the width clearance of the workpiece.

[0028] The above technical solution allows for precise positioning of the workpiece at the bottom of the feed slide via the guide limiting sleeve, enabling it to smoothly enter the rectangular slot of the feeding block.

[0029] The present invention is further configured such that: the discharge device includes a discharge plate with a lower front and a higher rear, the rear end of the discharge plate is connected to the front end of the rectangular groove, and side baffles are fixed at both ends of the discharge plate.

[0030] The present invention is further configured such that the bottom surface of the rectangular slot is higher than the bottom surface of the rectangular slot;

[0031] The front end of the rectangular groove is formed with a guide chamfer.

[0032] The rectangular groove and the rectangular slot are staggered at different heights, and the front end of the rectangular groove is provided with a guide chamfer, which can facilitate the workpiece in the rectangular slot to be pushed into the rectangular groove.

[0033] The present invention is further configured such that: the movable block is formed with symmetrical stepped holes extending in the left and right directions, and the driving rod is in the shape of a stepped rod;

[0034] The small-diameter rod of the drive rod is inserted into the symmetrical stepped hole. Two needle roller bearings and a thrust bearing are sleeved on the small-diameter rod of the drive rod, which are arranged on the left and right sides. The needle roller bearings are located inside the thrust bearings and are inserted into the symmetrical stepped hole.

[0035] The thrust bearing on the left is clamped on the stepped surface of the drive rod and the left stepped surface of the symmetrical stepped hole;

[0036] The thrust bearing on the right is clamped on the right step surface of the support ring and the symmetrical stepped hole; a disc spring is clamped between the support ring and the splined shaft.

[0037] Through the above technical solution, the drive rod can have a certain axial movement in the axial direction, which can prevent the tap from getting stuck during the tapping process.

[0038] The outstanding effects of this invention are:

[0039] Compared with existing technologies, the double tap tapping mechanism and single tap tapping mechanism of the tapping device can tap three holes on the workpiece at one time without interfering with each other; the flipping device can automatically flip the workpiece 90 degrees, thereby realizing the workpiece processing work by tapping twice.

[0040] The feeding and discharging devices can automatically complete the workpiece feeding, feeding and discharging operations, which can effectively improve the workpiece processing efficiency and significantly reduce production costs. Attached Figure Description

[0041] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0042] Figure 2 This is a top view of the present invention;

[0043] Figure 3 This is a schematic diagram of the feeding device structure of the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the flipping device of the present invention;

[0045] Figure 5 This is a schematic diagram of the tapping device of the present invention;

[0046] Figure 6 This is a schematic diagram of the double tapping mechanism of the present invention;

[0047] Figure 7 This is a schematic diagram of the single-tap tapping mechanism of the present invention;

[0048] Figure 8 This is a partial cross-sectional view of the feeding device of the present invention;

[0049] Figure 9 This is a structural schematic diagram of the iron tee fitting (i.e., the workpiece) involved in the present invention.

[0050] Reference numerals: 10, feeding device; 101, feeding chute; 102, limiting guide rod; 103, feeding block; 1031, rectangular slot; 104, third guide rail; 105, first servo telescopic cylinder; 106, re-guide limiting sleeve; 1061, conical part; 1062, cylindrical part;

[0051] 20. Tapping device; 21. Double tap tapping mechanism; 22. Single tap tapping mechanism;

[0052] 201. Workpiece positioning seat; 202. Rectangular groove; 203. Clearance groove; 204. Clearance hole; 205. Cylinder; 206. Guide chamfer;

[0053] 2101. First drive housing; 2102. First guide rail; 2103. Lifting block; 2104. Screw; 2105. Support plate; 2106. First servo motor; 2107. Spline rod; 2108. First gear; 2109. Base plate; 2110. Second gear; 2111. Second servo motor; 2112. First linear bearing; 2113. First tapping chuck; 2114. First tap;

[0054] 2201. Second drive housing; 2202. Second guide rail; 2203. Moving block; 2204. Drive rod; 2205. Second linear bearing; 2206. Second tapping chuck; 2207. Second tap; 2208. Splined shaft; 2209. Third gear; 2210. Second support plate; 2211. Third servo motor; 2212. Fourth gear; 2213. Fifth gear; 2214. Fourth servo motor; 2215. Needle roller bearing; 2216. Thrust bearing; 2217. Support ring; 2218. Disc spring;

[0055] 22031, rack; 22032, symmetrical stepped hole

[0056] 30. Tilting device; 301. Four-jaw chuck; 302. Rotary cylinder; 303. Double-rod cylinder; 304. Moving seat; 305. Second cylinder; 306. Fourth guide rail; 307. Second servo telescopic cylinder;

[0057] 40. Discharge device; 401. Discharge plate; 402. Side baffle;

[0058] 90. Workpiece; 901. Hole requiring tapping. Detailed Implementation

[0059] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0060] The following is for reference Figures 1 to 9 The present invention will be described as follows:

[0061] A special tapping machine for profile cabinet iron tee corner connectors includes a feeding device 10 fixed on the frame, a tapping device 20, a flipping device 30, and a discharging device 40. The tapping device 20 includes a workpiece positioning seat 201 fixed on the frame. The workpiece positioning seat 201 has a rectangular groove 202 with openings on the upper and front sides and a clearance groove 203 penetrating the middle of the rectangular groove 202. A double tap tapping mechanism 21 is provided directly above the rectangular groove 202, and a single tap tapping mechanism 22 is provided on the right side of the clearance groove 203.

[0062] A clearance hole 204 is formed on the rear side wall of the rectangular groove 202. A cylinder 205 is provided behind the clearance hole 204, and the piston rod of the cylinder 205 is directly opposite the clearance hole 204. The cylinder 205 is fixed on the frame. The feeding device 10, tapping device 20, tilting device 30 and discharging device 40 are controlled by a controller, which controls the extension and retraction of the cylinder.

[0063] The workpiece enters the rectangular slot of the tapping device through the feeding device. Then, the double tapping mechanism 21 taps the first and fifth holes in the vertical direction on the workpiece 90, while the single tapping mechanism 22 taps the third hole in the horizontal direction on the workpiece 90. After tapping, the flipping device flips the workpiece 90 degrees and inserts it back into the rectangular slot. Then, the double tapping mechanism 21 taps the first and fifth holes in the original horizontal direction on the workpiece 90, and the single tapping mechanism 22 taps the third hole in the original vertical direction on the workpiece 90. After tapping, the piston rod of the cylinder 205 extends, pushing the workpiece 90 out of the rectangular slot and onto the discharge device. Through the two tapping operations of the double tapping mechanism and the single tapping mechanism, the tapping of the six holes (first, third, and fifth) in the vertical and horizontal directions on the workpiece can be completed quickly without any omissions. Automatic feeding and discharging are also possible, which can significantly improve the tapping efficiency of workpieces, i.e., iron tee fittings.

[0064] The double tapping mechanism 21 includes a first drive housing 2101 fixed on the frame, a pair of first guide rails 2102 arranged front and rear inside the first drive housing 2101, a lifting block 2103 slidably connected on the pair of first guide rails 2102, the middle of the lifting block 2103 being screwed onto a vertically arranged screw 2104, the screw 2104 being rotatably connected to a support plate 2105 arranged above and below via bearings, the support plate 2105 being fixedly connected to the first drive housing 2101, and a first servo motor 2106 for driving the screw 2104 to rotate is fixed on the upper support plate 2105;

[0065] The lifting block 2103 has two vertically arranged splined rods 2107 hinged to it by bearings. The middle of each splined rod 2107 is connected to a first gear 2108 by a spline. The two first gears 2108 are rotatably connected to the base plate 2109. The base plate 2109 is fixed in the lower middle part of the first drive housing 2101. One side of each of the two first gears 2108 meshes with a second gear 2110. The second gear 2110 is fixed on the motor shaft of the second servo motor 2111. The second servo motor 2111 is fixed on the base plate 2109.

[0066] The spline rod 2107 passes through the lower extension end of the first linear bearing 2112 and is fixed with a first tapping chuck 2113, on which a first tap 2114 is fixed; the first linear bearing 2112 is inserted into and fixed to the bottom of the first drive housing 2101. The first servo motor and the second servo motor are both electrically connected to the controller.

[0067] The first servo motor drives the screw to rotate, which in turn drives the lifting block to move downwards. The lifting block then drives the two splined rods to move downwards, and the splined rods drive the first tap to move downwards via the first tapping chuck. Simultaneously, the second servo motor drives the second gear to rotate, which in turn drives the two first gears to rotate synchronously. The two first gears drive the corresponding splined rods to rotate via the spline, thus causing the splined rods to move downwards while rotating, thereby completing the tapping operation. After the first tap has reached the bottom, the first and second servo motors reverse their directions, and the first tap rotates back and detaches from the workpiece.

[0068] The single tap tapping mechanism 22 includes a second drive housing 2201 fixed on the frame. A second guide rail 2202 arranged in the left and right direction is fixed inside the second drive housing 2201. A moving block 2203 is rotatably connected to the second guide rail 2202. A horizontally arranged drive rod 2204 is rotatably connected inside the moving block 2203. A second tapping chuck 2206 is fixed to the left protruding end of the drive rod 2204 through the second linear bearing 2205. A second tap 2207 is fixed to the second tapping chuck 2206. The second linear bearing 2205 is inserted into and fixed to the left end of the second drive housing 2201.

[0069] The right end of the drive rod 2204 is fixed with a splined shaft 2208 coaxially arranged therewith. The splined shaft 2208 is connected to a third gear 2209 via a spline. The third gear 2209 is rotatably connected to a second support plate 2210. The second support plate 2210 is fixedly connected to the second drive housing 2201. A third servo motor 2211 is fixed on the second support plate 2210. A fourth gear 2212 is fixed on the motor shaft of the third servo motor 2211. The fourth gear 2212 meshes with the third gear 2209.

[0070] A rack 22031 is formed on the moving block 2203, and the rack 22031 meshes with a fifth gear 2213. The fifth gear 2213 is fixed on the motor shaft of the fourth servo motor 2214, and the fourth servo motor 2214 is fixed inside the second drive housing 2201. Both the fourth servo motor and the third servo motor are electrically connected to the controller.

[0071] The third servo motor drives the fourth gear to rotate, which in turn drives the third gear. The third gear, through a spline, drives the spline shaft to rotate, which in turn drives the drive rod to rotate. The drive rod, through the second tapping chuck, drives the second tap to rotate. Simultaneously, the fourth servo motor drives the fifth gear to rotate, which, through a rack, moves the moving block to the left. The moving block then moves the drive rod to the left, thus causing the drive rod to move while rotating, thereby tapping the workpiece. Once the tap has reached its limit, the third and fourth servo motors simultaneously reverse their directions, causing the second tap to rotate and disengage from the workpiece.

[0072] The feeding device 10 includes a feeding slide 101 with the left side higher than the right side, and two limiting guide rods 102 equidistant from the feeding slide 101. The limiting guide rods 102 are fixedly connected to the feeding slide 101, and the feeding slide 101 is fixed on the frame.

[0073] The feeding chute 101 is provided with a feeding block 103 at the lower right end. The right end of the feeding block 103 is formed with a rectangular slot 1031. The bottom of the feeding block 103 is slidably connected to the third guide rail 104 arranged in the left and right direction. The feeding block 103 is fixed to the end of the telescopic rod of the first servo telescopic cylinder 105. The first servo telescopic cylinder 105 and the third guide rail 104 are fixed on the frame.

[0074] The feeding block 103 is located on the front side of the workpiece positioning seat 201.

[0075] The flipping device 30 includes a four-jaw chuck 301, which is fixed on the rotating disk of the rotary cylinder 302. The rotary cylinder 302 is fixed on the two piston rods of the double-rod cylinder 303. The double-rod cylinder 303 is fixed on the movable seat 304. A second cylinder 305 is fixed on the movable seat 304. The second cylinder 305 is located to the left of the double-rod cylinder 303 and faces the rectangular slot 202.

[0076] The movable seat 304 is slidably connected to the fourth guide rail 306 arranged in the left-right direction. The movable seat 304 is fixed to the end of the telescopic rod of the second servo telescopic cylinder 307. The second servo telescopic cylinder 307 and the fourth guide rail 306 are fixed to the frame. The controller controls the first servo telescopic cylinder, the second servo telescopic cylinder, the second cylinder, the double-rod cylinder, the rotary cylinder, and the four-jaw chuck.

[0077] Workpieces are placed from the top of the feeding slide, and multiple workpieces can be placed at once. Then, by setting the left side of the feeding channel to be higher than the right side, the workpieces can automatically slide to the right and down. The first servo telescopic cylinder drives the feeding block to move to the left. When the rectangular slot moves to the bottom of the workpiece on the feeding slide, the bottom workpiece automatically enters the rectangular slot.

[0078] Then, after the workpiece on the workpiece positioning seat is finished and pushed away from the rectangular groove by the cylinder 205, the first servo telescopic cylinder drives the feeding block to move to the right. The feeding block moves the workpiece on the feeding block to the right and moves to the front of the rectangular groove. Then, the piston rod of the second cylinder extends and pushes the workpiece on the feeding block backward into the rectangular groove. The rear side wall of the rectangular groove can position the workpiece. The piston rod of the second cylinder resets. Then, the double tap tapping mechanism and the single tap tapping mechanism 22 tap the corresponding holes on the workpiece. At the same time, the feeding block moves to the left and resets, and another workpiece enters the rectangular groove.

[0079] After the double-tap tapping mechanism and the single-tap tapping mechanism complete one tapping operation, the second servo telescopic cylinder moves the moving seat to the left a certain distance, aligning the four-jaw chuck with the workpiece on the rectangular slot 202. Then, the double-rod cylinder moves the rotary cylinder forward, which in turn moves the four-jaw chuck to the front end of the rectangular slot. The piston rod of cylinder 205 then extends, pushing the workpiece that has undergone one tapping operation into the four-jaw chuck. The four-jaw chuck clamps the workpiece. The double-rod cylinder then moves the four-jaw chuck backward, disengaging the workpiece from the rectangular slot. Finally, the rotary cylinder rotates the four-jaw chuck 90 degrees, causing it to move... The workpiece is rotated 90 degrees, and then the double-rod cylinder drives the four-jaw chuck to move forward again. The four-jaw chuck inserts the rotated workpiece back into the rectangular slot. Then the four-jaw chuck releases the workpiece and moves backward to reset. The second servo telescopic cylinder drives the moving seat to move to the right to reset. The piston rod of the second cylinder extends to push the workpiece in the rectangular slot backward to position it again. Then the double tap tapping mechanism and the single tap tapping mechanism perform secondary tapping on the workpiece. After the workpiece has been tapped twice, all six screw holes on the workpiece are processed. Then the piston rod of cylinder 205 extends to push the processed workpiece to the discharge device to complete the automatic discharge.

[0080] The feed chute 101 and the limiting guide rod 102 both include an inclined section that is higher on the left and lower on the right, an arc transition section, and a vertical section;

[0081] A reguide limiting sleeve 106 is fixed on the vertical section of the limiting guide rod 102;

[0082] The reguide limiting sleeve 106 includes a tapered portion 1061 with a smaller upper part and a cylindrical portion 1062 with a larger lower part. The diameter of the small end of the tapered portion 1061 is equal to the outer diameter of the limiting guide rod 102. The minimum distance between the cylindrical portion 1062 and the feed slide 101 is matched with the width clearance of the workpiece 90.

[0083] The guide limiting sleeve can accurately position the workpiece at the bottom of the feed slide, allowing it to smoothly enter the rectangular slot of the feeding block.

[0084] The discharge device 40 includes a discharge plate 401 with a lower front and a higher rear. The rear end of the discharge plate 401 is connected to the front end of the rectangular groove 202, and side baffles 402 are fixed at both ends of the discharge plate 401.

[0085] The bottom surface of the rectangular slot 1031 is higher than the bottom surface of the rectangular slot 202;

[0086] The front end of the rectangular groove 202 is formed with a guide chamfer 206.

[0087] The rectangular groove and the rectangular slot are staggered at different heights, and the front end of the rectangular groove is provided with a guide chamfer, which can facilitate the workpiece in the rectangular slot to be pushed into the rectangular groove.

[0088] The movable block 2203 has a symmetrical stepped hole 22032 that runs through it in the left and right directions, and the driving rod 2204 is in the shape of a stepped rod.

[0089] The small-diameter rod of the drive rod 2204 is inserted into the symmetrical stepped hole 22032. Two needle roller bearings 2215 and thrust bearings 2216 are sleeved on the small-diameter rod of the drive rod 2204. The needle roller bearings 2215 are located inside the thrust bearings 2216 and are inserted into the symmetrical stepped hole 22032.

[0090] The thrust bearing 2216 on the left is clamped on the stepped surface of the drive rod 2204 and the left stepped surface of the symmetrical stepped hole 22032;

[0091] The thrust bearing 2216 on the right side is clamped on the right step surface of the support ring 2217 and the symmetrical stepped hole 22032; a disc spring 2218 is clamped between the support ring 2217 and the spline shaft 2208.

[0092] The drive rod can have a certain axial movement to prevent the tap from getting stuck during tapping.

[0093] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications assumed above should also be considered within the scope of protection of the present invention.

Claims

1. A special tapping machine for profile cabinet iron tee corner connectors, comprising a feeding device (10), a tapping device (20), a flipping device (30), and a discharging device (40) fixed on a frame, characterized in that: The tapping device (20) includes a workpiece positioning seat (201) fixed on the frame. The workpiece positioning seat (201) has a rectangular groove (202) with openings on the upper and front sides and a relief groove (203) penetrating the middle of the rectangular groove (202). A double tap tapping mechanism (21) is provided directly above the rectangular groove (202), and a single tap tapping mechanism (22) is provided on the right side of the relief groove (203). A clearance hole (204) is formed on the rear side wall of the rectangular groove (202). A cylinder (205) is provided on the rear side of the clearance hole (204). The piston rod of the cylinder (205) is directly opposite the clearance hole (204). The cylinder (205) is fixed on the frame. The flipping device (30) includes a four-jaw chuck (301), which is fixed on the rotating disk of the rotary cylinder (302). The rotary cylinder (302) is fixed on the two piston rods of the double-rod cylinder (303). The double-rod cylinder (303) is fixed on the movable seat (304). A second cylinder (305) is fixed on the movable seat (304). The second cylinder (305) is located to the left of the double-rod cylinder (303) and faces the rectangular slot (202). The movable seat (304) is slidably connected to the fourth guide rail (306) arranged in the left and right direction. The movable seat (304) is fixed to the end of the telescopic rod of the second servo telescopic cylinder (307). The second servo telescopic cylinder (307) and the fourth guide rail (306) are fixed on the frame. The double tap tapping mechanism (21) and single tap tapping mechanism (22) of the tapping device (20) can tap three holes in the workpiece at one time without interfering with each other; the flipping device (30) can automatically flip the workpiece 90 degrees, so that the workpiece can be processed by tapping twice.

2. The tapping machine for a special type of angle connector for steel profile cabinets according to claim 1, characterized in that: The double tapping mechanism (21) includes a first drive housing (2101) fixed on the frame. Inside the first drive housing (2101), there is a pair of first guide rails (2102) arranged front and rear. A lifting block (2103) is slidably connected on the pair of first guide rails (2102). The middle part of the lifting block (2103) is screwed onto a vertically arranged screw rod (2104). The screw rod (2104) is rotatably connected to a support plate (2105) arranged above and below through a bearing. The support plate (2105) is fixedly connected to the first drive housing (2101). A first servo motor (2106) that drives the screw rod (2104) to rotate is fixed on the upper support plate (2105). The lifting block (2103) is hinged with two vertically arranged spline rods (2107) by bearings. The middle of each spline rod (2107) is connected to a first gear (2108) by spline. The two first gears (2108) are rotatably connected to the base plate (2109). The base plate (2109) is fixed in the lower middle part of the first drive housing (2101). One side of each of the two first gears (2108) meshes with a second gear (2110). The second gear (2110) is fixed on the motor shaft of the second servo motor (2111). The second servo motor (2111) is fixed on the base plate (2109). The spline rod (2107) passes through the lower protruding end of the first linear bearing (2112) and is fixed with a first tapping chuck (2113), and a first tap (2114) is fixed on the first tapping chuck (2113); the first linear bearing (2112) is inserted into and fixed to the bottom of the first drive housing (2101).

3. The tapping machine for a special angle connector of a profile cabinet tee as described in claim 1, characterized in that: The single tap tapping mechanism (22) includes a second drive housing (2201) fixed on the frame. A second guide rail (2202) arranged in the left and right direction is fixed inside the second drive housing (2201). A moving block (2203) is rotatably connected to the second guide rail (2202). A drive rod (2204) arranged in the horizontal direction is rotatably connected inside the moving block (2203). A second tapping chuck (2206) is fixed to the left protruding end of the drive rod (2204) through the second linear bearing (2205). A second tap (2207) is fixed on the second tapping chuck (2206). The second linear bearing (2205) is inserted into and fixed to the left end of the second drive housing (2201). The right end of the drive rod (2204) is fixed with a spline shaft (2208) coaxially arranged with it. The spline shaft (2208) is connected to a third gear (2209) via a spline. The third gear (2209) is rotatably connected to a second support plate (2210). The second support plate (2210) is fixedly connected to the second drive housing (2201). A third servo motor (2211) is fixed on the second support plate (2210). A fourth gear (2212) is fixed on the motor shaft of the third servo motor (2211). The fourth gear (2212) meshes with the third gear (2209). The moving block (2203) has a rack (22031) formed on it, the rack (22031) meshes with a fifth gear (2213), the fifth gear (2213) is fixed on the motor shaft of the fourth servo motor (2214), and the fourth servo motor (2214) is fixed inside the second drive housing (2201).

4. A special tapping machine for profile cabinet tee corner connectors according to claim 1, characterized in that: The feeding device (10) includes a feeding slide (101) with the left side higher than the right side and two limiting guide rods (102) equidistant from the feeding slide (101). The limiting guide rods (102) are fixedly connected to the feeding slide (101), and the feeding slide (101) is fixed on the frame. The feeding chute (101) has a feeding block (103) at the lower right end. The right end of the feeding block (103) has a rectangular slot (1031). The bottom of the feeding block (103) is slidably connected to the third guide rail (104) set in the left and right direction. The feeding block (103) is fixed to the end of the telescopic rod of the first servo telescopic cylinder (105). The first servo telescopic cylinder (105) and the third guide rail (104) are fixed on the frame. The feeding block (103) is located in front of the workpiece positioning seat (201).

5. A special tapping machine for profile cabinet tee corner connectors according to claim 4, characterized in that: The feed chute (101) and the limiting guide rod (102) both include an inclined section that is higher on the left and lower on the right, an arc transition section and a vertical section; A reguide limiting sleeve (106) is fixed on the vertical section of the limiting guide rod (102). The reguide limiting sleeve (106) includes a tapered part (1061) and a cylindrical part (1062) with the upper part smaller than the lower part larger. The small end diameter of the tapered part (1061) is equal to the outer diameter of the limiting guide rod (102). The minimum distance between the cylindrical part (1062) and the feed slide (101) is matched with the width clearance of the workpiece (90).

6. A special tapping machine for profile cabinet tee corner connectors according to claim 1, characterized in that: The discharge device (40) includes a discharge plate (401) with a lower front and a higher rear. The rear end of the discharge plate (401) is connected to the front end of the rectangular groove (202), and side baffles (402) are fixed at both ends of the discharge plate (401).

7. A special tapping machine for profile cabinet tee corner connectors according to claim 4, characterized in that: The bottom surface of the rectangular slot (1031) is higher than the bottom surface of the rectangular slot (202); The front end of the rectangular groove (202) is formed with a guide chamfer (206).

8. A special tapping machine for profile cabinet tee corner connectors according to claim 3, characterized in that: The movable block (2203) has a symmetrical stepped hole (22032) that runs through it in the left and right directions, and the drive rod (2204) is in the shape of a stepped rod; The small diameter rod of the drive rod (2204) is inserted into the symmetrical stepped hole (22032). Two needle roller bearings (2215) and a thrust bearing (2216) are sleeved on the small diameter rod of the drive rod (2204). The needle roller bearings (2215) are located inside the thrust bearings (2216) and are inserted into the symmetrical stepped hole (22032). The thrust bearing (2216) on the left is clamped on the stepped surface of the drive rod (2204) and the left stepped surface of the symmetrical stepped hole (22032); The thrust bearing (2216) on the right side is clamped on the right step surface of the support ring (2217) and the symmetrical stepped hole (22032); a disc spring (2218) is clamped between the support ring (2217) and the spline shaft (2208).

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