A surface phosphating treatment device and phosphating treatment process for metal workpiece

Abstract

The invention relates to the field of phosphating treatment of metal workpieces, and discloses a surface phosphating treatment device and a phosphating treatment process for metal workpieces, comprising a treatment frame, a conveying pipe and a drain pipe, wherein a conveying pipe is installed on an outer wall of one side of the treatment frame, a drain pipe is connected to the lower part of the other side of the treatment frame, a bracket is fastened with bolts in the middle of the front of the treatment frame, a first through slot is provided on the bracket, a lifting plate passes through the first through slot, and a support plate is connected at both ends of the lifting plate, the support plate is in a "W" shape, and each of the support plates is provided with a plurality of second through slots, a starting motor drives the metal workpiece on the support plate to move down to the treatment frame for phosphating treatment, and the rotation of the first roller on the fixed rod can move the metal workpiece on the support plate, and the contact position between the workpiece and the first roller is changed, so that the phosphating of the workpiece is more thorough, thereby improving the treatment quality.

Description

Technical Field

[0001] The invention relates to the technical field of phosphating treatment of metal workpieces, and in particular to a surface phosphating treatment device and a phosphating treatment process for metal workpieces. Background Art

[0002] Metal phosphating is a process of forming a phosphate chemical conversion film through chemical and electrochemical reactions. The formed phosphate conversion film is called a phosphating film. The main purpose of phosphating is to: provide protection for the base metal and prevent the metal from being corroded to a certain extent; to be used as a primer before painting to improve the adhesion and corrosion resistance of the paint film; to reduce friction and lubricate in metal cold processing technology;

[0003] During metal phosphating treatment, the prior art generally adopts a clamping member to clamp the metal workpiece to be phosphated and place it into a treatment box, and the phosphating treatment is performed by a phosphating liquid. However, since the clamping member is clamped on the metal workpiece, part of the metal workpiece is blocked and the phosphating cannot be performed well, resulting in incomplete metal phosphating and reduced treatment quality. Therefore, there is room for improvement. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a surface phosphating treatment device and a phosphating treatment process for a metal workpiece.

[0005] In a first aspect, the present invention provides a surface phosphating treatment device for a metal workpiece, which adopts the following technical solution:

[0006] A surface phosphating treatment device for metal workpieces, comprising a treatment frame, a conveying pipe and a drain pipe, wherein a conveying pipe is installed on an outer wall of one side of the treatment frame, and a drain pipe is connected to the lower part of the other side of the treatment frame. A bracket is fastened with bolts in the middle of the front side of the treatment frame, a first through slot is provided on the bracket, a lifting plate passes through the first through slot, and a support plate is connected at both ends of the lifting plate, and the support plate is in a "W" shape, and each of the support plates is provided with a plurality of second through slots, and a fixing rod is connected between the inner walls of both ends of each of the second through slots, and a first roller is movably sleeved on each of the fixing rods, guide slots are provided on both sides of the inner side of the bracket, and a guide block sliding in the guide slot is provided on the lifting plate, a motor is installed in the middle of the upper side of the bracket, and a screw passing through the threaded hole on the lifting plate is connected to the output end of the motor, and a limiting structure is provided at the position close to the two support plates, and a flushing structure is provided at the side of the treatment frame away from the bracket.

[0007] Preferably, the limiting structure includes a moving bar arranged at a position where two support plates are away from each other on one side, the moving bar is arranged on the lifting plate through the moving structure, a U-shaped frame is arranged on the moving bar through a buffer structure, a limiting frame is arranged inside the U-shaped frame, the U-shaped frame is sleeved in a limiting groove opened on the upper and lower side surfaces of the limiting frame, a plurality of vertical shafts are equidistantly passed through the upper and lower side surfaces of the limiting frame, a second roller is sleeved on each of the vertical shafts, a plurality of leakage ports are opened on the upper and lower side surfaces of the limiting frame, and the plurality of leakage ports and the plurality of vertical shafts are spaced apart from each other.

[0008] Preferably, the movable structure includes a third through slot provided on the lifting plate, a movable plate passing through the third through slot, a protrusion being arranged on the top of the movable plate, both ends of the protrusion being fitted on the lifting plate, an insertion rod passing through the movable plate, one end of the insertion rod being connected to a first connecting rod, one end of the first connecting rod being connected to the moving bar, the other end of the first connecting rod extending to the inner wall of the processing frame, inner plates being embedded at positions of the inner wall of the processing frame corresponding to the two moving bars, guide grooves being provided on the inner plates, the guide grooves on the two inner plates being symmetrically arranged, and one end of the insertion rod being slidably arranged in the guide groove.

[0009] Preferably, a first curved groove is provided on the inner side surfaces of the two inner plates, the top end of the first curved groove is connected to the bottom end of the guide groove, and the first curved grooves on the two inner plates are arranged parallel to each other.

[0010] Preferably, the buffer structure includes multiple T-shaped rods passing through the moving bar, the multiple T-shaped rods are evenly spaced on the moving bar, one end of each T-shaped rod is connected to the U-shaped frame, and the other end of each T-shaped rod is connected to a first spring between the moving bar.

[0011] Preferably, a fourth through slot is provided on the lifting plate at a position close to the third through slot, a second connecting rod passes through the fourth through slot, one end of the second connecting rod is connected to the limiting frame, the other end of the second connecting rod extending to the bracket is connected to a through rod, a first vertical plate is connected to the inner side surface of the bracket, a second curved slot is provided on the first vertical plate along its length direction, one end of the through rod passes through the second curved slot, and the through rod is in an "L" shape.

[0012] Preferably, the flushing structure includes a cylinder installed on two convex plates on one side of the processing frame near the middle, the bottom end of the cylinder output shaft is connected to a cleaning strip, a flushing tube is rotatably passed through the cleaning strip, a row of flushing holes is provided on the flushing tube, a slide groove is provided at one end of the cleaning strip, a slider is slidably provided in the slide groove, a pull-out rod passes through the part of the slider passing through the slide groove, one end of the pull-out rod is connected to the pull-out strip, the pull-out strip is inserted into the bottom of the cleaning strip, a gear is sleeved at the position below the pull-out strip on the flushing tube, the gear is meshed with teeth on the pull-out strip, the other end of the pull-out rod is connected to an L-shaped rod, and a second vertical plate is connected to the position of the inner wall of the processing frame corresponding to the L-shaped rod, and a third curved groove for the L-shaped rod to pass through is provided on the second vertical plate.

[0013] Preferably, two fixed blocks are connected to the lower part of the cleaning strip near the middle position, a transverse groove is provided at the lower part of the inner wall of the processing frame away from the bracket, a guide rod is connected between the groove walls at both ends of the transverse groove, two cleaning plates are sleeved on the guide rod, and wire brushes are arranged under the two cleaning plates, second springs are sleeved on both sides of the guide rod, and the two ends of the second spring are respectively connected to the cleaning plate and the groove wall at one end of the transverse groove, and the two fixed blocks are rotationally connected to the two cleaning plates through a curved rod.

[0014] In a second aspect, the present application provides a surface phosphating process for a metal workpiece, which adopts the following technical solution:

[0015] A surface phosphating process for a metal workpiece comprises the following steps:

[0016] Phosphating: Place the metal workpiece on the pallet, start the motor to drive the metal workpiece down to the phosphating solution for 10-15 minutes. The weight of the raw materials contained in each liter of phosphating solution is: 80-90% zinc dihydrogen phosphide, 30-40% manganese phosphate, 10-15% calcium phosphide, 3-6% nickel phosphate, 2-4% tartaric acid, and the rest is water;

[0017] Step 2: Water washing: Ordinary tap water is passed into the washing pipe and sprayed out from the washing hole on the washing pipe to wash the workpiece clean;

[0018] Step 3: Drying: Start the motor again to move the phosphated workpiece out of the processing frame and dry it.

[0019] In summary, the present invention includes the following beneficial technical effects:

[0020] 1. The present invention installs a motor, a screw, a lifting plate and a support plate on the bracket, and a fixing rod and a first roller are arranged on the support plate. The motor can be started to drive the metal workpiece on the support plate to move down to the processing frame for phosphating treatment, and the first roller rotates on the fixing rod to move the metal workpiece on the support plate. By changing the contact position between the workpiece and the first roller, the phosphating of the workpiece is more thorough, thereby improving the processing quality;

[0021] 2. The present invention provides a U-shaped frame and a limit frame on both sides of the support plate, and provides a plurality of second rollers in the limit frame. The plurality of second rollers on the limit frame can be used to limit the two ends of the workpiece, thereby reducing the problem of the workpiece slipping off the support plate;

[0022] 3. The present invention is provided with a third through slot, a moving plate, an insertion rod and a first connecting rod connected to the moving bar on the lifting plate, one end of the insertion rod is slidably arranged in the guide slot on the inner plate, so that when the lifting plate drives the workpiece to move downward, the two sets of limit frames can be automatically moved toward the middle to limit the workpiece by sliding one end of the insertion rod in the guide slot; a first curved slot connected to the bottom end of the guide slot is provided on the inner plate, and as the lifting plate continues to move downward, the metal workpiece can be automatically pushed to move horizontally on the support plate through the two sets of limit frames by sliding one end of the insertion rod in the first curved slot, so as to change the position of the metal workpiece on the support plate;

[0023] 4. The present invention is provided with a fourth through slot and a second connecting rod connected to the limit frame on the lifting plate, and the other end of the second connecting rod is connected to a through rod passing through the second curved slot. As the lifting plate moves downward, the through rod is driven to slide in the second curved slot, which can automatically drive the limit frame to move back and forth at both ends of the workpiece, thereby changing the contact position between the second roller and the workpiece during the phosphating process, thereby reducing the problem of incomplete phosphating caused by partial obstruction of the workpiece;

[0024] 5. The present invention is provided with a cylinder, a cleaning strip and a flushing pipe on one side of the processing frame away from the bracket. Water is sprayed onto the workpiece through the flushing pipe to flush the workpiece and the processing frame. A slider, a pull rod and a pull strip are provided at one end of the cleaning strip. The pull strip is meshed and connected with the gear on the flushing pipe. The L-shaped rod at one end of the pull rod passes through the third curved groove, so that the cylinder drives the flushing pipe to move up and down, and the L-shaped rod slides in the third curved groove, which can automatically drive the flushing pipe to rotate back and forth, so that the workpiece and the processing frame can be flushed more thoroughly.

[0025] 6. In the present invention, the fixed block on the cleaning bar is rotatably connected to the cleaning plate through a curved rod, and a second spring is connected between the cleaning plate and the groove wall at one end of the transverse groove. When the cleaning bar moves up and down for flushing, the cleaning plate and the wire brush can be driven to move back and forth as a whole at the lower inner wall of the processing frame, so that the processing frame can be cleaned more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 In the embodiment of the present invention Figure 1 A magnified view of the structure at A;

[0028] Figure 3 In the embodiment of the present invention Figure 1 A magnified view of the structure at B;

[0029] Figure 4 In the embodiment of the present invention Figure 1 A magnified view of the structure at C;

[0030] Figure 5 In the embodiment of the present invention Figure 1 A magnified view of the structure at D;

[0031] Figure 6 In the embodiment of the present invention Figure 1 A magnified view of the structure at E;

[0032] Figure 7 2 is a schematic diagram of the structure at the end of the lifting plate in an embodiment of the present invention;

[0033] Figure 8 In the embodiment of the present invention Figure 7 A magnified view of the structure at F;

[0034] Fig. 9 In the embodiment of the present invention Figure 7 A magnified view of the structure at G;

[0035] Fig.10 It is a schematic diagram of the structure of the first curved groove and the second curved groove in an embodiment of the present invention.

[0036] Explanation of the reference numerals: 1. Processing frame; 2. Delivery pipe; 3. Drain pipe; 4. Bracket; 5. Motor; 6. Lifting plate; 7. First through slot; 8. Support plate; 9. Second through slot; 10. Fixed rod; 11. Moving bar; 12. Guide slot; 13. Guide block; 14. U-shaped frame; 15. Limiting frame; 16. Limiting slot; 17. Vertical axis; 18. Second roller; 19. Liquid leakage port; 20. Inner plate; 21. Third through slot; 22. Moving plate; 23. Guide slot; 24. Inserting rod; 25. First connecting rod; 26. First curved slot ; 27. T-shaped rod; 28. first spring; 29. ​​fourth through groove; 30. second connecting rod; 31. through rod; 32. second curved groove; 33. first vertical plate; 34. cylinder; 35. cleaning strip; 36. flushing pipe; 37. slider; 38. pull rod; 39. L-shaped rod; 40. third curved groove; 41. second vertical plate; 42. pull rod; 43. gear; 44. slide groove; 45. fixed block; 46. curved rod; 47. cleaning plate; 48. horizontal groove; 49. guide rod; 50. second spring; 51. first roller. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-Figure 10 The present invention is described in further detail.

[0038] The embodiment of the invention discloses a surface phosphating treatment device for a metal workpiece.

[0039] Reference Figure 1 and Figure 2A surface phosphating treatment device for metal workpieces comprises a treatment frame 1, a delivery pipe 2 and a drain pipe 3. The delivery pipe 2 is installed on the outer wall of one side of the treatment frame 1, and the drain pipe 3 is connected to the lower part of the other side of the treatment frame 1. Valves are installed on the delivery pipe 2 and the drain pipe 3. A bracket 4 is fastened with bolts in the middle of the front of the treatment frame 1. The bracket 4 is provided with a first through groove 7. A lifting plate 6 is movably passed through the first through groove 7. Both ends of the lifting plate 6 are connected to a support plate 8. The support plate 8 is in a "W" shape. Each support plate 8 is provided with a plurality of second through grooves 9. A fixing rod 10 is connected between the inner walls of both ends of each second through groove 9. A first roller 51 is movably sleeved on each fixing rod 10. The first roller 51 is arranged on the upper side of the support plate 8. Guide grooves 12 are provided on both sides of the inner side of the bracket 4. The lifting plate 6 is provided with a guide groove 12. There is a guide block 13 sliding in the guide groove 12, and the guide block 13 is used in the guide groove 12 to guide the lifting plate 6 when it moves. A motor 5 is installed in the middle of the upper part of the bracket 4, and the output end of the motor 5 is connected to a screw passing through the threaded hole on the lifting plate 6. A limiting structure is set at the position close to the two support plates 8, and a flushing structure is set on the side of the processing frame 1 away from the bracket 4. When the motor 5 is started to drive the screw to rotate, the lifting plate 6 drives the metal workpiece on the support plate 8 to move down to the processing frame 1 for phosphating treatment, and the first roller 51 is rotated on the fixed rod 10 to facilitate the movement of the metal workpiece on the support plate 8. By changing the contact position between the metal workpiece and the first roller 51, the phosphating treatment of the workpiece is more thorough. The first roller 51 is cylindrical, and the contact area with the metal workpiece is reduced.

[0040] See also Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10The limiting structure includes a moving bar 11 at a position where two support plates 8 are away from each other, the moving bar 11 is arranged on the lifting plate 6 through the moving structure, a U-shaped frame 14 is arranged on the moving bar 11 through a buffer structure, a limiting frame 15 is movably arranged in the U-shaped frame 14, and the U-shaped frame 14 is movably set in the limiting grooves 16 on the upper and lower sides of the limiting frame 15. The upper and lower sides of the limiting frame 15 are fixed with multiple vertical shafts 17 at equal intervals, and each vertical shaft 17 is movably set with a second roller 18. The upper and lower sides of the limiting frame 15 A plurality of leakage openings 19 are provided on the side surface, and the leakage openings 19 play the role of leakage, reducing the problem of accumulation of phosphating solution in the limit frame 15. The plurality of leakage openings 19 and the plurality of vertical shafts 17 are arranged at intervals from each other. After the moving bar 11 drives the second roller 18 on the limit frame 15 to move to the two ends of the workpiece on the support plate 8, the workpiece can be limited at both ends, and the second roller 18 is used to replace the contact between the limit frame 15 and the workpiece, which can reduce the contact area between the workpiece and the workpiece, and reduce the resistance generated when the workpiece moves;

[0041] The moving structure includes a third through slot 21 provided on the lifting plate 6, a moving plate 22 passing through the third through slot 21, a raised portion provided on the moving plate 22, both ends of the raised portion being fitted on the lifting plate 6, the raised portion can be used to limit the moving plate 22 on the lifting plate 6, so as to prevent the moving plate 22 from falling on the lifting plate 6, a plug rod 24 is fixedly passed through the moving plate 22, one end of the plug rod 24 is connected to a first connecting rod 25, one end of the first connecting rod 25 is connected to the moving bar 11, and the first connecting rod 25 The other end of the processing frame 1 extends to the inner wall of the processing frame 1, and the inner wall of the processing frame 1 corresponds to the position of the two moving bars 11. The inner plate 20 is provided with a guide groove 23. The guide grooves 23 on the two inner plates 20 are symmetrically arranged. One end of the insertion rod 24 is slidably arranged in the guide groove 23. When the lifting plate 6 is driven to move downward into the processing frame 1, it drives one end of the insertion rod 24 to slide in the guide groove 23, so as to automatically drive the moving bar 11 and the limit frame 15 to move toward the end of the workpiece as a whole, so as to clamp and limit the workpiece;

[0042] The inner side surfaces of the two inner plates 20 are both provided with a first curved groove 26, the top end of the first curved groove 26 is connected to the bottom end of the guide groove 23, and the first curved grooves 26 on the two inner plates 20 are arranged parallel to each other. When the lifting plate 6 drives one end of the insertion rod 24 to slide in the first curved groove 26, the two limit frames 15 can drive the workpiece to move back and forth in the horizontal direction on the support plate 8, thereby automatically moving the workpiece on the support plate 8 to change its position with the first roller 51;

[0043] The buffer structure includes a plurality of T-shaped rods 27 that movably pass through the moving bar 11. The plurality of T-shaped rods 27 are evenly spaced on the moving bar 11. One end of each T-shaped rod 27 is connected to the U-shaped frame 14. A first spring 28 is connected between the other end of each T-shaped rod 27 and the moving bar 11. By utilizing the deformation of the first spring 28, not only can the workpieces of different sizes be limited, but also the problem of wear on the workpiece surface caused by excessive limit clamping force can be reduced.

[0044] A fourth through slot 29 is provided on the lifting plate 6 at a position close to the third through slot 21, and a second connecting rod 30 passes through the fourth through slot 29, one end of the second connecting rod 30 is connected to the limiting frame 15, and the second connecting rod 30 extends to the other end of the bracket 4 and is connected to the through rod 31, and the inner side surface of the bracket 4 is connected to the first vertical plate 33, and the first vertical plate 33 is provided with a second curved slot 32 along its length direction, and one end of the through rod 31 passes through the second curved slot 32, and the through rod 31 is designed to be "L" shaped, so that when the limiting frame 15 drives the workpiece to move back and forth in the horizontal direction, the through rod 31 is prevented from falling off from the second curved slot 32, and when the lifting plate 6 drives the workpiece on the support plate 8 to move, it can drive the through rod 31 to slide in the second curved slot 32, and then automatically drive the limiting frame 15 to move back and forth in the U-shaped frame 14 along the width direction of the processing frame 1, and change the position of the second roller 18 on the workpiece during phosphating, thereby reducing the problem of incomplete phosphating treatment due to obstruction.

[0045] See also Figure 1 , Figure 5 and Figure 6 The flushing structure includes a cylinder 34 installed on two convex plates near the middle of one side of the processing frame 1. The bottom end of the output shaft of the cylinder 34 is connected to a cleaning bar 35. A flushing pipe 36 rotates through the cleaning bar 35. The flushing pipe 36 is provided with a row of flushing holes. The flushing pipe 36 is connected to an external water storage tank through a hose. A water pump is installed in the water storage tank. After the cylinder 34 and the water pump in the water storage tank are started, water is passed through the flushing pipe 36, which drives the flushing pipe 36 to move up and down in the processing frame 1 to flush the workpiece and the processing frame 1.

[0046] A slide groove 44 is provided at one end of the cleaning strip 35, and a slider 37 is slidably provided in the slide groove 44. The cross sections of the slider 37 and the slide groove 44 are both in a "T" shape. A pull rod 38 is movably passed through the part of the slider 37 that passes through the slide groove 44. One end of the pull rod 38 is connected to a pull strip 42, and the pull strip 42 is inserted into the lower part of the cleaning strip 35. A gear 43 is fixedly sleeved on the flushing pipe 36 at a position below the pull strip 42. The gear 43 is meshed with the teeth on the pull strip 42. The other end of the pull rod 38 is connected to an L The position of the L-shaped rod 39 is connected to the inner wall of the processing frame 1 corresponding to the position of the L-shaped rod 39. The second vertical plate 41 is provided with a third curved groove 40 for the L-shaped rod 39 to pass through. When the cylinder 34 drives the cleaning strip 35 and the flushing pipe 36 to move up and down as a whole in the processing frame 1, it drives the L-shaped rod 39 to slide in the third curved groove 40 to pull the pull-out strip 42 to move back and forth. When the flushing pipe 36 moves up and down through the gear 43, it drives the flushing pipe 36 to rotate back and forth, so that the workpiece and the processing frame 1 are flushed more thoroughly.

[0047] Two fixing blocks 45 are connected to the lower part of the cleaning strip 35 near the middle position. A transverse groove 48 is provided at the lower part of the inner wall of the processing frame 1 away from the bracket 4. A guide rod 49 is connected between the groove walls at both ends of the transverse groove 48. Two cleaning plates 47 are movably sleeved on the guide rod 49. One end of the cleaning plate 47 is attached to the inner groove wall of the transverse groove 48. Wire brushes are arranged under the two cleaning plates 47. Second springs 50 are sleeved on both sides of the guide rod 49. The two ends of the second spring 50 are respectively connected to the cleaning plate 47 and the groove wall at one end of the transverse groove 48. The two fixing blocks 45 are rotatably connected to the two cleaning plates 47 by a curved rod 46. When the cleaning strip 35 drives the flushing pipe 36 to move up and down, the cleaning plate 47 is pushed to move by the curved rod 46. As well as the reset effect of the second spring 50, the wire brush on the cleaning plate 47 can be driven to move back and forth at the lower inner wall of the processing frame 1, thereby improving the cleaning quality of the processing frame 1.

[0048] The embodiment of the present invention also discloses a detection method for a surface phosphating treatment device for a metal workpiece, comprising the following steps:

[0049] Step 1: Phosphating: Place the metal workpiece on the support plate 8, start the motor 5 to drive the metal workpiece to move down to the phosphating solution for 10-15 minutes. The weight of the raw materials contained in each liter of the phosphating solution is: 80-90% zinc dihydrogen phosphide, 30-40% manganese phosphate, 10-15% calcium phosphide, 3-6% nickel phosphate, 2-4% tartaric acid, and the rest is water;

[0050] Step 2: Water washing: Ordinary tap water is introduced into the washing pipe 36 and sprayed out from the washing hole on the washing pipe 36 to wash the workpiece cleanly;

[0051] Step 3: Drying: Start the motor 5 again to move the phosphated workpiece out of the processing frame 1 and dry it.

[0052] The implementation principle of the phosphating treatment device and the phosphating treatment process for the surface of a metal workpiece according to the embodiment of the present invention is as follows: first, the motor 5 is started to drive the screw to rotate, and the lifting plate 6 moves downward in the first through groove 7 on the bracket 4 to drive the workpiece on the support plate 8 to move toward the treatment frame 1 filled with the phosphating solution. When the lifting plate 6 moves downward, it drives one end of the insertion rod 24 to slide downward in the guide groove 23 on the inner plate 20. Through the guiding effect of the guide groove 23, the two groups of moving bars 11 and the limit frame 15 are driven to move toward the end of the workpiece as a whole, and then the second roller 18 on the limit frame 15 is driven to move to the end of the workpiece, and the workpiece is limited at both ends, and the T-shaped The rod 27 stretches the first spring 28 to play a buffering role, reducing the problem of wear on the workpiece surface caused by excessive clamping and limiting force. When the workpiece on the support plate 8 moves into the phosphating solution in the processing frame 1, as the lifting plate 6 continues to move downward, one end of the insertion rod 24 is driven to slide downward in the first curved groove 26, so that the two groups of moving bars 11 and the limiting frame 15 move synchronously in the same direction, and then automatically push the workpiece to move back and forth on the first roller 51 in the support plate 8 along the length direction of the processing frame 1, and change the position between the workpiece and the first roller 51 during the phosphating process. At the same time, the lifting plate 6 drives the penetration rod 31 to slide in the second curved groove 32, through The second connecting rod 30 pulls the limit frame 15 to move back and forth in the U-shaped frame 14 along the width direction of the processing frame 1 to automatically change the position between the workpiece and the second roller 18, thereby avoiding the problem of incomplete phosphating of the workpiece due to continuous obstruction of part of the workpiece, and improving the quality of phosphating of the workpiece. After the phosphating treatment, the sewage in the processing frame 1 is discharged through the sewage pipe 3, and then the water pump in the water storage tank is started to pass water into the flushing pipe 36, and the flushing holes on the flushing pipe 36 are sprayed toward the workpiece and the processing frame 1 for flushing, and the cylinder 34 can also be started to drive the cleaning strip 35 and the flushing pipe 36 to move up and down as a whole in the processing frame 1, and the L-shaped rod 39 is driven in the third curved groove 40. The sliding movement can drive the pull-out strip 42 to move back and forth, and the gear 43 can drive the flushing tube 36 to rotate back and forth, so that the workpiece and the processing frame 1 can be flushed more thoroughly. When the cleaning strip 35 moves downward, the curved rod 46 pushes the cleaning plate 47 to move away from each other in the transverse groove 48. When the cleaning strip 35 moves upward, the elastic reset effect of the second spring 50 is used to push the cleaning plate 47 to move in the opposite direction and reset. In this way, the reciprocating movement of the cleaning plate 47 can drive the wire brush to scrub the lower inner wall of the processing frame 1, and the dirt accumulated on the lower inner wall of the processing frame 1 can be cleaned, thereby improving the cleaning quality. After the flushing is completed, the support plate 8 moves up to take out the workpiece for drying.

[0053] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface phosphating treatment device for a metal workpiece, comprising a treatment frame (1), a delivery pipe (2) and a sewage pipe (3), characterized in that: A delivery pipe (2) is installed on the outer wall of one side of the processing frame (1), and a sewage pipe (3) is connected to the lower part of the other side of the processing frame (1). A bracket (4) is fastened with bolts in the middle of the front of the processing frame (1), and a first through slot (7) is provided on the bracket (4). A lifting plate (6) passes through the first through slot (7), and both ends of the lifting plate (6) are connected to a support plate (8), and the support plate (8) is in a "W" shape. Each of the support plates (8) is provided with a plurality of second through slots (9), and the inner walls at both ends of each second through slot (9) are connected. A fixing rod (10) is provided, each of the fixing rods (10) being movably sleeved with a first roller (51), guide grooves (12) are provided on both sides of the inner side surface of the bracket (4), a guide block (13) sliding in the guide groove (12) is provided on the lifting plate (6), a motor (5) is installed at the middle of the upper surface of the bracket (4), the output end of the motor (5) is connected to a screw passing through a threaded hole on the lifting plate (6), a limiting structure is provided at the position close to the two supporting plates (8), and a flushing structure is provided at the side of the processing frame (1) away from the bracket (4); The limiting structure comprises a moving bar (11) arranged at a position on one side where two supporting plates (8) are away from each other, the moving bar (11) is arranged on the lifting plate (6) through the moving structure, a U-shaped frame (14) is arranged on the moving bar (11) through a buffer structure, a limiting frame (15) is arranged inside the U-shaped frame (14), the U-shaped frame (14) is sleeved in a limiting groove (16) provided on the upper and lower side surfaces of the limiting frame (15), a plurality of vertical shafts (17) are equidistantly passed through the upper and lower side surfaces of the limiting frame (15), each of the vertical shafts (17) is sleeved with a second roller (18), a plurality of liquid leakage ports (19) are provided on the upper and lower side surfaces of the limiting frame (15), and the plurality of liquid leakage ports (19) and the plurality of vertical shafts (17) are arranged at intervals from each other; The moving structure comprises a third through slot (21) formed on the lifting plate (6), a moving plate (22) passing through the third through slot (21), a protrusion being arranged on the top of the moving plate (22), both ends of the protrusion being fitted on the lifting plate (6), an insertion rod (24) passing through the moving plate (22), one end of the insertion rod (24) being connected to a first connecting rod (25), one end of the first connecting rod (25) being connected to the moving bar (11), the other end of the first connecting rod (25) extending to the inner wall of the processing frame (1), inner plates (20) being embedded at positions of the inner wall of the processing frame (1) corresponding to the two moving bars (11), a guide groove (23) being formed on the inner plate (20), the guide grooves (23) on the two inner plates (20) being arranged symmetrically with each other, and one end of the insertion rod (24) being slidably arranged in the guide groove (23); A fourth through slot (29) is provided on the lifting plate (6) at a position close to the third through slot (21), a second connecting rod (30) passes through the fourth through slot (29), one end of the second connecting rod (30) is connected to the limiting frame (15), the other end of the second connecting rod (30) extending to the bracket (4) is connected to a through rod (31), the inner side surface of the bracket (4) is connected to a first vertical plate (33), a second curved slot (32) is provided on the first vertical plate (33) along its length direction, one end of the through rod (31) passes through the second curved slot (32), and the through rod (31) is in an "L" shape.

2. The surface phosphating treatment device for metal workpieces according to claim 1, characterized in that: A first curved groove (26) is provided on the inner side surfaces of the two inner plates (20), the top end of the first curved groove (26) is connected to the bottom end of the guide groove (23), and the first curved grooves (26) on the two inner plates (20) are arranged parallel to each other.

3. The surface phosphating treatment device for metal workpieces according to claim 1, characterized in that: The buffer structure comprises a plurality of T-shaped rods (27) passing through the moving bar (11), wherein the plurality of T-shaped rods (27) are distributed at equal intervals on the moving bar (11), one end of each of the T-shaped rods (27) is connected to the U-shaped frame (14), and a first spring (28) is connected between the other end of each of the T-shaped rods (27) and the moving bar (11).

4. The surface phosphating treatment device for metal workpieces according to claim 1, characterized in that: The flushing structure comprises a cylinder (34) mounted on two convex plates near the middle of one side of the processing frame (1), the bottom end of the output shaft of the cylinder (34) is connected to a cleaning bar (35), a flushing tube (36) is rotatably passed through the cleaning bar (35), a row of flushing holes is provided on the flushing tube (36), a slide groove (44) is provided at one end of the cleaning bar (35), a slider (37) is slidably arranged in the slide groove (44), a pull rod (38) is passed through the part of the slider (37) passing through the slide groove (44), and the pull rod (38) is One end is connected to a pull-out strip (42), the pull-out strip (42) is inserted into the lower part of the cleaning strip (35), a gear (43) is sleeved on the flushing tube (36) at a position below the pull-out strip (42), the gear (43) is meshingly connected with the teeth on the pull-out strip (42), the other end of the pull-out rod (38) is connected to an L-shaped rod (39), a second vertical plate (41) is connected to the inner wall of the processing frame (1) at a position corresponding to the L-shaped rod (39), and a third curved groove (40) is provided on the second vertical plate (41) for the L-shaped rod (39) to pass through.

5. The surface phosphating treatment device for metal workpieces according to claim 4, characterized in that: Two fixing blocks (45) are connected to the lower part of the cleaning strip (35) near the middle position. A transverse groove (48) is provided at the lower part of the inner wall of the processing frame (1) away from the bracket (4). A guide rod (49) is connected between the groove walls at both ends of the transverse groove (48). Two cleaning plates (47) are sleeved on the guide rod (49). Steel wire brushes are arranged under the two cleaning plates (47). Second springs (50) are sleeved on both sides of the guide rod (49). The two ends of the second spring (50) are respectively connected to the cleaning plate (47) and the groove wall at one end of the transverse groove (48). The two fixing blocks (45) are rotationally connected to the two cleaning plates (47) via a curved rod (46).

6. The surface phosphating process for metal workpieces according to claim 1, characterized in that: The following steps are involved: Step 1: Phosphating: placing the metal workpiece on the support plate (8), starting the motor (5) to drive the metal workpiece to move down into the phosphating solution for immersion for 10-15 minutes. The weight (g) of the raw materials contained in each liter of the phosphating solution is: 80-90% zinc dihydrogen phosphide, 30-40% manganese phosphate, 10-15% calcium phosphide, 3-6% nickel phosphate, 2-4% tartaric acid, and the rest is water; Step 2: Water washing: ordinary tap water is introduced into the washing pipe (36) and sprayed out from the washing hole on the washing pipe (36) to wash the workpiece cleanly; Step 3: Drying: Start the motor (5) again to move the phosphated workpiece out of the processing frame (1) for drying.

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