Stainless steel product polishing production line

Abstract

According to the stainless steel product polishing production line, an abrasive belt polishing machine is provided with a pre-pressure air cylinder, the pre-pressure air cylinder is adjusted through a first pressure adjusting valve, a polishing shaft is made to automatically move relative to a guide sleeve through the pre-pressure air cylinder, and the set constant polishing cutting force is kept when a workpiece is polished; a driving wheel frame of the abrasive belt polishing machine is connected with a first guide shaft, a tensioning air cylinder provides power to drive the first guide shaft to move relative to a guide sleeve, and the tightness of an abrasive belt is adjusted. The hemp wheel polishing machine adjusts the transverse moving speed of the waxing sliding table through the second pressure regulating valve so as to control the smearing speed of the wax block on the hemp wheel; the wax block motor guides and controls the smearing depth of the wax block on the hemp wheel each time through the second guide shaft; a workpiece is firstly polished on the abrasive belt polishing machine, then the workpiece is placed on the overturning position of the finished product conveying line to be overturned up and down by 180 degrees to be ground and polished for the first time, and then the workpiece is ground and polished for the second time. The device has the advantages of reducing the labor intensity, improving the consistency of workpieces and saving consumables.

Description

Technical Field

[0001] The invention relates to a stainless steel product polishing production line. Background Art

[0002] In the current production of stainless steel products, polishing is a very important surface treatment process. Existing flat polishing machines have automated the flat polishing process. For the polishing of complex curved surfaces, manual work is still required: the polishing working environment is harsh and harmful to the human body; during the polishing process, manual work is required to apply polishing wax on the polishing wheel to improve the polishing quality; manual work is required to adjust the polishing intensity according to the wall thickness and size of the workpiece to ensure that the workpiece surface is not damaged after polishing; polishing consumables management lacks a set of standard service life management, etc. Nowadays, automated polishing of complex curved surfaces has become a more urgent need. Summary of the invention

[0003] The purpose of the present invention is to provide a stainless steel product polishing production line which reduces labor intensity, improves workpiece consistency and saves consumables in view of the above problems.

[0004] The object of the present invention is achieved in this way: a stainless steel product polishing production line is provided with a sand belt polisher, a hemp wheel polisher, a six-axis mechanical arm, a feed conveyor line, a finished product conveyor line and an electric control device, and the electric control device controls the movement of the sand belt polisher, the hemp wheel polisher and the six-axis mechanical arm and the conveying of the workpiece of the conveyor line; The abrasive belt polisher is provided with a pre-pressure cylinder, which is adjusted by a first pressure regulating valve, and the polishing shaft is automatically displaced relative to the guide sleeve by the pre-pressure cylinder, so that the workpiece maintains a set constant polishing cutting force during polishing; the driving wheel frame of the abrasive belt polisher is connected to the first guide shaft, and the first guide shaft is driven to displace relative to the guide sleeve by the power provided by the tensioning cylinder, so as to adjust the tightness of the abrasive belt; The hemp wheel polishing machine adjusts the lateral movement speed of the waxing slide table through the second pressure regulating valve to control the speed of the wax block rubbing on the hemp wheel; the wax block motor controls the depth of each rubbing of the wax block on the hemp wheel through the second guide shaft; The workpiece is transported from the feeding conveyor line to the first material picking position, and the first six-axis robot arm clamps the workpiece through the clamp and polishes it on the abrasive belt polisher; after abrasive belt polishing, the first six-axis robot arm places the workpiece on the flipping position of the finished product conveyor line, flips it 180° up and down, and transports it forward from the finished product conveyor line to the second material picking position, and the second six-axis robot arm clamps the workpiece through the clamp and polishes it on the first hemp wheel polisher; after the first hemp wheel polishing, the second six-axis robot arm places the workpiece on the finished product conveyor line, comes to the third material picking position, and the third six-axis robot arm clamps the workpiece through the clamp and polishes it on the second hemp wheel polisher; then, the third six-axis robot arm places the workpiece on the finished product conveyor line, and the finished product conveyor line is brought to the end.

[0005] The present invention provides a sand belt polisher and a hemp wheel polisher with a dust cover, a sealing wall is provided on the periphery of the polishing area, and the polishing area is dusted by a negative pressure dust removal device.

[0006] In the present invention, induction switches are arranged on each material taking position and turning position on the feeding conveyor line and the finished product conveyor line, and the induction switches send signals to the electric control device to control the movement of the abrasive belt polisher, the hemp wheel polisher and the six-axis mechanical arm.

[0007] The invention discloses a hemp wheel polishing machine provided with a manual regulating wheel for replacing the wax block, and the distance between the wax block and the hemp wheel can be manually regulated by the manual regulating wheel so as to achieve the desired waxing conditions.

[0008] The present invention has the following positive effects: through the non-standard developed polishing machine, the required constant polishing thrust can be provided for different workpieces, and the complex curved surface can be polished without damage, so that the connection of the polished surface can meet the mirror surface requirements; by using a large-load six-axis industrial manipulator, the movements during manual operation are simulated to complete the polishing operation of the complex curved surface; through the automatic waxing module, the process of manual participation is reduced and the life of polishing consumables is uniformly managed; the workpiece is fed and unloaded in the polishing area through the feed conveyor line and the finished product conveyor line, the polishing area can be sealed, and the dust generated during polishing is collected by negative pressure suction and then collected by water-immersed collection equipment, which can effectively reduce the dust content in the air during polishing and purify the working environment.

[0009] The present invention is further described with reference to the following embodiments and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the production line layout of an embodiment of the present invention; Figure 2 yes Figure 1 Operation flow chart of the embodiment; Figure 3 yes Figure 1 A schematic diagram of the three-dimensional structure of the belt polisher of the embodiment; Figure 4 yes Figure 1 A schematic diagram of the front structure of the abrasive belt polisher of the embodiment; Figure 5 yes Figure 1 A schematic diagram of the three-dimensional structure of a hemp wheel polishing machine according to an embodiment; Figure 6 yes Figure 1 A schematic three-dimensional structural diagram of the hemp wheel polishing machine of the embodiment viewed from another direction.

[0011] In the figure, A, abrasive belt polisher; A1, the first hemp wheel polisher; A2, the second hemp wheel polisher; B1, the first six-axis robotic arm; B2, the second six-axis robotic arm; B3, the third six-axis robotic arm; Q1, the first material picking position; Q2, the second material picking position; Q3, the third material picking position; F, flipping position; L1, feed conveyor line; L2, finished product conveyor line; K, electronic control device; 1, pre-pressure cylinder; 2, guide sleeve; 3, first pressure regulating valve; 4, first guide shaft; 5, tensioning cylinder; 6, abrasive belt; 7, second pressure regulating valve; 8, waxing slide; 9, wax block motor; 10, second guide shaft; 11, dust cover; 12, sealing wall; 13, manual adjustment wheel; 14, polishing shaft; 15, hemp wheel. Implementation

[0012] Reference Figures 1 to 6 The present embodiment is a polishing production line for stainless steel products. Taking the polishing of the outer ring of a 1.2L kettle as an example, a belt polisher, two hemp wheel polishers, three six-axis robotic arms, a feed conveyor line L1, a finished product conveyor line L2 and an electronic control device K are provided. The electronic control device controls the movement of the belt polisher, the hemp wheel polisher and the six-axis robotic arms and the conveying of the workpieces of the conveyor line; the belt polisher A is provided with a pre-pressure cylinder 1, which is adjusted by a first pressure regulating valve 3, and the polishing shaft 14 is automatically displaced relative to the guide sleeve 2 by the pre-pressure cylinder, so that the workpiece maintains the set constant polishing cutting force during polishing; the active wheel frame of the belt polisher is connected to the first guide shaft 4, and the first guide shaft is displaced relative to the guide sleeve by the power provided by the tensioning cylinder 5, so as to adjust the tightness of the sand belt 6; the hemp wheel polisher adjusts the lateral movement speed of the waxing slide 8 by the second pressure regulating valve 7 to control the speed of the wax block being rubbed on the hemp wheel; The block motor 9 guides and controls the depth of each application of the wax block on the hemp wheel 15 through the second guide shaft 10; the workpiece is transported to the first material picking position Q1 by the feed conveyor line, and the first six-axis robot arm B1 clamps the workpiece through a clamp and polishes it on the abrasive belt polisher; after the abrasive belt polishing, the first six-axis robot arm places the workpiece on the flip position F of the finished product conveyor line, flips it 180° up and down, and conveys it forward from the finished product conveyor line to the second material picking position Q2, and the second six-axis robot arm B2 clamps the workpiece through a clamp and polishes it on the first hemp wheel polisher A1; after the first hemp wheel polishing, the second six-axis robot arm places the workpiece on the finished product conveyor line, and comes to the third material picking position Q3, and the third six-axis robot arm B3 clamps the workpiece through a clamp and polishes it on the second hemp wheel polisher A2; then, the third six-axis robot arm places the workpiece on the finished product conveyor line, and the finished product conveyor line is brought to the end.

[0013] In the present invention, the abrasive belt polisher and the hemp wheel polisher are provided with a dust cover 11, a sealing wall 12 is provided on the periphery of the polishing area, and the polishing area is dusted by a negative pressure dust removal device.

[0014] In the present invention, induction switches are arranged on each material taking position and turning position on the feeding conveyor line and the finished product conveyor line, and the induction switches send signals to the electric control device to control the movement of the abrasive belt polisher, the hemp wheel polisher and the six-axis mechanical arm.

[0015] The hemp wheel polishing machine of the present invention is provided with a manual adjustment wheel 13 for replacing the wax block, and the distance between the wax block and the hemp wheel is manually adjusted by the manual adjustment wheel to ensure that the waxing is in place.

[0016] Reference Figure 3 and Figure 4 , Figure 5 and Figure 6 When the polishing machine is equipped with abrasive belts and hemp wheels for polishing, the two consumables have the same method of maintaining the constant cutting force required for polishing. Abrasive belts and hemp wheels are replaceable polishing consumables and can be selectively installed according to the specific polishing process. The difference is that abrasive belt polishing requires a tensioning device, while hemp wheel polishing requires an automatic waxing device.

[0017] Reference Figure 3 and Figure 4 The explosion-proof motor is installed on the frame, and the grinding belt wheel is installed at the end. The grinding belt wheel drives the polishing shaft at the end of the grinding belt drive to ensure that the grinding belt wheel rotates and reaches the required speed. The guide sleeve provides positioning for the polishing shaft to move forward and backward, and maintains the set constant polishing cutting force during polishing.

[0018] Reference Figure 3 and Figure 4 The belt polisher adjusts the force of the pre-pressure cylinder through the first pressure regulating valve to achieve the required pressure for polishing the workpiece; when working, the fixture installed on the six-axis robot arm clamps the workpiece, and then grinds it on the sanding belt. The six-axis robot arm carries the workpiece and applies pressure to the sanding belt wheel to polish the workpiece; as the pressure of the robot arm on the sanding belt wheel continues to increase, it exceeds the cutting force provided by the pre-pressure cylinder under the action of the first pressure regulating valve, and the sanding belt wheel retreats along the direction of the guide sleeve, always maintaining the pressure of the pre-pressure cylinder set by the first pressure regulating valve to ensure that the surface of the workpiece is not overcut or damaged.

[0019] Reference Figure 3 and Figure 4 The first guide shaft of the belt polisher can drive the driving wheel frame to move forward and backward, and the power is provided by the tensioning cylinder. When the tensioning cylinder extends outward, the center distance between the grinding belt wheel and the driving wheel increases, so that the grinding belt reaches a tensioned state and polishing operation can be carried out; when the tensioning cylinder retracts, the center distance between the grinding wheel and the driving wheel decreases, so that the grinding belt reaches a relaxed state and the grinding belt can be replaced.

[0020] Reference Figure 5 and Figure 6The hemp wheel polishing machine adjusts the lateral speed of the waxing slide through the second pressure regulating valve to control the speed of the wax block mounted on the wax block mounting frame being rubbed on the hemp wheel; the second guide shaft is used as a guide, and is controlled by the wax block motor to move back and forth to control the depth of each wax block rubbing on the hemp wheel; the manual adjustment wheel is used to manually adjust the distance between the wax block and the hemp wheel every time the wax block is replaced to ensure that the wax is in place. According to different polishing workpieces, the speed, depth and frequency of waxing are adjusted through the program to ensure that the wax block is not wasted and consumables are saved.

[0021] According to the present invention, a workpiece to be polished is manually placed on a feeding conveyor line, and the feeding conveyor line conveys the workpiece to a first material picking position; then the first six-axis robot arm picks up the workpiece through a clamp and polishes it on a belt polisher; after completing the work, the workpiece is placed on a flipping position on a finished product conveyor line, flipped 180 degrees up and down, and continued to be conveyed forward by the finished product conveyor line; then the workpiece comes to a second material picking position, and the second six-axis robot arm picks up the workpiece through a clamp and polishes it on a first hemp wheel polisher; after completing the work, the workpiece is placed on a finished product conveyor line, and then the workpiece comes to a third material picking position, and the third six-axis robot arm picks up the workpiece through a clamp and polishes it on a second hemp wheel polisher; after completing the work, the workpiece is placed on a finished product conveyor line, conveyed to the end, and manually picked up to complete the entire work process.

[0022] In the present invention, during the polishing process, only the parameters of the product need to be set manually on the electronic control device, and the semi-finished products need to be placed on the feed conveyor line and the products need to be recovered from the finished product conveyor line, and then the production line automatically completes the polishing of the complex curved surface, saving a lot of manpower and reducing the technical requirements for manual polishing. The polishing area is surrounded by a sealed wall, and negative pressure dust removal can be used in the entire sealed polishing area to ensure a clean environment. The constant cutting force mechanism ensures that the polishing surface is not burned during polishing, thereby ensuring the polishing quality. The automatic waxing mechanism ensures that the overall polishing process can be completed without manual participation during the hemp wheel polishing process, saving the downtime waiting time of the equipment.

[0023] In the present invention, different robot arm motion programs corresponding to different products can be stored in the electric control box. Products with different wall thicknesses and external dimensions have different consumption rates for consumables such as wax blocks and hemp wheels. The life of consumables has a tracking function in the system. Corresponding to different polishing products, when the set life is reached, it automatically reminds manual replacement.

[0024] In the present invention, polishing machines required by different process flows can be combined at will, that is, the order of the sanding belt or hemp wheel process can be freely called in the program.

[0025] By using the polishing production line of the present invention, the polishing operation of a 1.2L kettle, which originally required the cooperation of four workers, can now be completed by one worker for program selection and loading and unloading, and 500 kettles can be polished in 8 hours per day.

Claims

1. A stainless steel product polishing production line, characterized by: A sand belt polisher, a hemp wheel polisher, a six-axis robot arm, a feed conveyor line (L1), a finished product conveyor line (L2) and an electric control device (K) are provided, and the electric control device controls the movement of the sand belt polisher, the hemp wheel polisher and the six-axis robot arm and the conveying of workpieces on the conveyor line; The abrasive belt polisher (A) is provided with a pre-pressure cylinder (1), which is adjusted by a first pressure regulating valve (3), and the polishing shaft (14) is automatically displaced relative to the guide sleeve (2) by the pre-pressure cylinder, so that the workpiece maintains a set constant polishing cutting force during polishing; the driving wheel frame of the abrasive belt polisher is connected to the first guide shaft (4), and the first guide shaft is driven to displace relative to the guide sleeve by a tensioning cylinder (5), so as to adjust the tightness of the abrasive belt (6); The hemp wheel polishing machine adjusts the lateral movement speed of the waxing slide (8) through the second pressure regulating valve (7) to automatically control the speed of the wax block rubbing on the hemp wheel; the wax block motor (9) controls the depth of each rubbing of the wax block on the hemp wheel (15) through the second guide shaft (10); The workpiece is transported from the feeding conveyor line to the first material picking position (Q1), and the first six-axis robot arm (B1) clamps the workpiece through the clamp and polishes it on the belt polisher; after belt polishing, the first six-axis robot arm places the workpiece on the flipping position (F) of the finished product conveyor line, flips it 180° up and down, and transports it forward from the finished product conveyor line to the second material picking position (Q2), and the second six-axis robot arm (B2) clamps the workpiece through the clamp and polishes it on the first hemp wheel polisher (A1); after the first hemp wheel polishing, the second six-axis robot arm places the workpiece on the finished product conveyor line, and comes to the third material picking position (Q3), and the third six-axis robot arm (B3) clamps the workpiece through the clamp and polishes it on the second hemp wheel polisher (A2); then, the third six-axis robot arm places the workpiece on the finished product conveyor line, and the finished product conveyor line brings it to the end.

2. The stainless steel product polishing production line according to claim 1 is characterized by: The abrasive belt polisher and the hemp wheel polisher are provided with a dust cover (11), and a sealing wall (12) is provided outside the polishing area. The polishing area is dusted by a negative pressure dust removal device.

3. The stainless steel product polishing production line according to claim 1 is characterized by: Induction switches are provided at each material taking position and turning position on the feeding conveyor line and the finished product conveyor line. The induction switches send signals to the electric control device to control the movement of the abrasive belt polisher, hemp wheel polisher and six-axis robotic arm.

4. The stainless steel product polishing production line according to claim 1 is characterized by: The hemp wheel polishing machine is provided with a manual adjustment wheel (13) for replacing the wax block, and the distance between the wax block and the hemp wheel is manually adjusted by the manual adjustment wheel so that the waxing is in place.

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