CN110640399A - Production process for preparing cold-rolled thin-wall sleeve - Google Patents
Production process for preparing cold-rolled thin-wall sleeve Download PDFInfo
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- CN110640399A CN110640399A CN201910843552.1A CN201910843552A CN110640399A CN 110640399 A CN110640399 A CN 110640399A CN 201910843552 A CN201910843552 A CN 201910843552A CN 110640399 A CN110640399 A CN 110640399A
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing a cold-rolled thin-wall sleeve. The cold-rolled sheet made of the Q345-B material is used as a raw material to replace a traditional seamless steel tube, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve is reduced; the cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved; the special straight seam automatic welding machine and the automatic polishing machine are integrated, the rear polishing machine performs primary polishing on the welding seam when the welding head is welded, and the polishing machine simultaneously resets to perform secondary polishing on the welding seam when the welding head resets; the self-made hydraulic correction machine and the special guide-head-free two-roller plate bending machine are arranged into a whole, plate bending and correction are sequentially carried out, and secondary transfer processing of the sleeve is not needed.
Description
Technical Field
The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing a cold-rolled thin-wall sleeve.
Background
The existing Jing Tang 3 cold rolling lines need more than 4 ten thousand cold rolling sleeves per year. According to the prediction of the demand state of Jing Tang, 25% of the new sleeves are suitable for being used as winding cores, and the total amount is predicted to be about 1 ten thousand pieces/year. According to the existing scale calculation of Jing Tang, the migrating steel in the first steel system and the cis-cold rolling mill have similar products, and the demand is estimated to reach 3 thousands of products per year.
The existing product is manufactured by adopting a seamless steel pipe and cold heading reaming process, adopts a seamless steel pipe with similar specification, and can be directly used after the inner hole is reamed by using a press machine through a specific tool to reach the size of a finished product. The production efficiency is low, the energy consumption is high, and the production cost is high. The existing product is a seamless steel pipe with the wall thickness of more than 8mm, and the product size is as follows: phi 520/phi 504X 1200, net weight 121.22 kg/piece.
The cold-rolled sleeve is manufactured by adopting the cold heading and reaming of the seamless tube, the cost of raw materials is higher, the processing is difficult, and the production efficiency is low.
Disclosure of Invention
Aiming at the technical defects, the invention provides a production process for preparing a cold-rolled thin-wall sleeve, wherein a cold-rolled sheet made of Q345-B material is used as a raw material to replace the traditional seamless steel tube, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve is reduced; the cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved; the special straight seam automatic welding machine and the automatic polishing machine are integrated, the rear polishing machine performs primary polishing on the welding seam when the welding head is welded, and the polishing machine simultaneously resets to perform secondary polishing on the welding seam when the welding head resets; the self-made hydraulic correction machine and the special guide-head-free two-roller plate bending machine are arranged into a whole, plate bending and correction are sequentially carried out, and secondary transfer processing of the sleeve is not needed.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the method comprises the following steps: the device comprises an uncoiler, a conveying roller, a plate shearing machine, a special no-lead two-roller plate bending machine, a special straight seam automatic welding machine, a self-made hydraulic pressure correcting machine, an automatic polishing machine, a steel belt and a sleeve; the processing technology for preparing the cold-rolled thin-wall sleeve comprises the following steps:
a) selecting raw materials, namely Q345-B, a cold-rolled sheet with the thickness of 3-8mm, and the tensile strength of the material is 550-600 Mpa;
b) blanking: feeding by an uncoiler and blanking by a plate shearing machine, and controlling the blanking tolerance, wherein the length and width tolerance is less than or equal to 1.5 mm;
c) plate rolling: using a special non-leading two-roller veneer reeling machine drum;
d) automatic welding: surfacing a butt weld by using a special straight seam automatic welding machine;
e) and (3) type correction: correcting the shape by using a self-made hydraulic shape correcting machine to correct the roundness of the winding drum and the radian of a welding seam;
f) polishing: polishing the welding seam by using an automatic polishing machine, and inspecting by using an arc measuring block;
g) and (4) checking: measuring the roundness diameter of the inner hole, wherein the tolerance is less than or equal to 1.5mm, and obtaining a qualified product;
h) packaging: and (3) polishing by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of each pattern are 50mm wide, spraying paint, and coating oil inside and outside to prevent rust.
Further optimizing the technical scheme, the special straight seam automatic welding machine in the step d) and the automatic polishing machine in the step f) are arranged into a whole.
Further optimizing the technical scheme, the special automatic straight seam welding machine in the step d) comprises a gantry support, a transverse guide rail group, a longitudinal guide rail group and a welding handle head; the transverse guide rail group is fixedly arranged between the tops of the two gantry supports; the longitudinal guide rail group is connected to the transverse guide rail group in a sliding manner; one side of the longitudinal guide rail group is connected with a fixing plate in a sliding manner; the welding handle head is fixedly arranged on the fixing plate; a fixing frame is arranged on the left side of the fixing plate; the automatic polishing machine in the step f) is fixedly arranged on the fixing frame.
Further optimizing the technical scheme, the sleeve is arranged on a special guiding-head-free two-roller plate bending machine; the sleeve welding seam position, the automatic polishing machine and the welding handle head are vertically corresponding.
Further optimizing the technical scheme, the self-made hydraulic pressure correcting machine in the step e) and the special no-leading-end two-roller plate bending machine in the step c) are arranged into a whole.
Further optimizing the technical scheme, the self-made hydraulic sizing machine comprises a base, a sliding seat and a hydraulic cylinder; the base is fixedly arranged on a left side wall plate of the leading-end-free two-roller plate bending machine; the sliding seat is connected to the right side of the base in a sliding manner; the hydraulic cylinder is fixedly arranged at the bottom of the base; the top of the telescopic rod of the hydraulic cylinder is fixed with the sliding seat; and three correction roller shafts are arranged on the right side of the sliding seat.
Further optimizing the technical scheme, the three correction roll shafts are all arranged in the sleeve; the diameter of an excircle formed among the three correction roller shafts is equal to the inner diameter of the sleeve.
Further optimizing the technical scheme, the chord height tolerance at the arc position of the welding line is less than or equal to 0.5mm, and the arc connecting position after polishing is required to have no obvious bulge.
Compared with the prior art, the invention has the following advantages:
1. Q345-B material, cold-rolled sheet with thickness of 3-8mm, cold-rolled sheet with tensile strength of 550-600 Mpa as raw material to replace traditional seamless steel tube, so that the cost of raw material is greatly reduced, and the production cost of cold-rolled sleeve is reduced.
2. The cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved.
3. The cold-rolled steel sheet replaces traditional seamless steel pipe to process the sleeve, and the processing cost is low, and production efficiency is high, has solved and has adopted seamless pipe cold-heading reaming preparation cold-rolled sleeve, and its raw and other materials not only cost is higher, processes the difficult low production efficiency problem of production moreover.
4. The special straight seam automatic welding machine and the automatic polishing machine are integrated, when the welding handle head welds the straight seam position of the sleeve, the polishing machine at the rear polishes the welding seam at the rear of the welding handle head, when the welding head resets, the polishing machine resets simultaneously to polish the welding seam for the second time, the welding and polishing processes are integrated, and the manufacturing cost of the equipment is low.
5. The self-made hydraulic correcting machine and the special guiding-head-free two-roller plate bending machine are arranged into a whole, plate bending and correcting are sequentially carried out, secondary transfer processing of the sleeve is not needed, production efficiency is improved, and equipment manufacturing cost is low.
6. The welding is the top that the head set up at the sleeve gap, and welding seam position hot melt during the welding flows downwards under the action of gravity to compensate the space of below, the firm effect of welding is better, and the sleeve intensity of making is higher.
7. The tolerance of the roundness of the winding drum is less than or equal to 1.5mm, the tolerance of the chord height of the arc position of the welding line is less than or equal to 0.5mm, no obvious bulge is required at the arc connecting position after polishing, and the qualification rate of finished products for manufacturing the sleeve can be ensured.
Drawings
FIG. 1 is an overall flow diagram of a manufacturing process for making a cold-rolled thin-walled sleeve.
FIG. 2 is a schematic view of a flow of a rolled sheet portion of a production process for manufacturing a cold-rolled thin-walled sleeve.
FIG. 3 is a partial block diagram of the welding and grinding locations of a manufacturing process for making cold rolled thin walled sleeves.
FIG. 4 is a schematic view of the installation state of a hydraulic calibration machine used in the production process for preparing a cold-rolled thin-walled sleeve.
FIG. 5 is a partial cross-sectional view of a calibration site configuration for a manufacturing process for making a cold-rolled thin-walled sleeve.
In the figure: 1. an uncoiler; 2. a conveying roller; 3. a plate shearing machine; 4. a special no-leading two-roller plate bending machine; 5. a special automatic straight seam welding machine; 501. a gantry support; 502. a transverse guide rail set; 503. a longitudinal rail set; 504. welding a handle head; 505. a fixing plate; 506. a fixed mount; 6. a self-made hydraulic calibrator; 601. a base; 602. a slide base; 603. a hydraulic cylinder; 604. correcting the roll shaft; 7. automatic polishing machine; 8. a steel belt; 9. a sleeve; 901. and (7) welding seams.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: with reference to fig. 1-5, a production process for manufacturing a cold-rolled thin-walled sleeve is characterized in that: the method comprises the following steps: the device comprises an uncoiler 1, a conveying roller 2, a plate shearing machine 3, a special no-leading two-roller plate bending machine 4, a special straight seam automatic welding machine 5, a self-made hydraulic pressure correcting machine 6, an automatic polishing machine 7, a steel belt 8 and a sleeve 9; the processing technology for preparing the cold-rolled thin-wall sleeve 9 comprises the following steps:
i) selecting raw materials, namely Q345-B, a cold-rolled sheet with the thickness of 3-8mm, and the tensile strength of the material is 550-600 Mpa;
j) blanking: feeding by an uncoiler 1, blanking by a plate shearing machine 3, and controlling the blanking tolerance, wherein the length and width tolerance is less than or equal to 1.5 mm;
k) plate rolling: using a special leading-free two-roller veneer reeling machine 4 reel;
l) automatic welding: surfacing a butt weld 901 by using a special straight seam automatic welding machine 5;
m) type correction: using a self-made hydraulic calibrator 6 to calibrate the roundness of the winding drum and the radian of a welding line 901;
n) polishing: polishing the weld joint 901 by using an automatic polishing machine 7, and inspecting an arc measuring block;
o) testing: measuring the roundness diameter of the inner hole, wherein the tolerance is less than or equal to 1.5mm, and obtaining a qualified product;
p) packaging: and (3) polishing by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of each pattern are 50mm wide, spraying paint, and coating oil inside and outside to prevent rust.
The special straight seam automatic welding machine 5 in the step d) and the automatic polishing machine 7 in the step f) are arranged into a whole; the special straight seam automatic welding machine 5 in the step d) comprises a gantry support 501, a transverse guide rail group 502, a longitudinal guide rail group 503 and a welding handle head 504; the transverse guide rail group 502 is fixedly arranged between the tops of the two gantry supports 501; the longitudinal guide rail set 503 is slidably connected to the transverse guide rail set 502; one side of the longitudinal guide rail group 503 is connected with a fixing plate 505 in a sliding way; the welding handle head 504 is fixedly arranged on the fixing plate 505; a fixing frame 506 is arranged on the left side of the fixing plate 505; the automatic polishing machine 7 in the step f) is fixedly arranged on the fixing frame 506; the sleeve 9 is arranged on the special no-leading two-roller plate bending machine 4; the position of the welding line 901 of the sleeve 9, the automatic polishing machine 7 and the welding handle 504 correspond up and down; the self-made hydraulic pressure correcting machine 6 in the step e) and the special no-leading-end two-roller plate bending machine 4 in the step c) are arranged into a whole; the self-made hydraulic calibrating machine 6 comprises a base 601, a sliding seat 602 and a hydraulic cylinder 603; the base 601 is fixedly arranged on a left side wall plate of the leading-end-free two-roller plate bending machine; the sliding seat 602 is connected to the right side of the base 601 in a sliding manner; the hydraulic cylinder 603 is fixedly arranged at the bottom of the base 601; the top of the telescopic rod of the hydraulic cylinder 603 is fixed with the sliding seat 602; three correcting roller shafts 604 are arranged on the right side of the sliding seat 602; the three correcting roller shafts 604 are all arranged inside the sleeve 9; the diameter of an outer circle formed among the three correction roller shafts 604 is equal to the inner diameter of the sleeve 9; the tolerance of the chord height of the arc of the welding line 901 is less than or equal to 0.5mm, and the arc-connecting part is required to have no obvious bulge after polishing.
When the device is used, step one is combined with the steps shown in the figures 1 and 2, a steel belt 8 roll is penetrated into a tensioning shaft of an uncoiler 1 through a forklift or other tools, the steel belt 8 roll is positively fastened and fixed through the uncoiler 1, one end of the steel belt 8 roll is opened and penetrates through the middle of a plate shearing machine 3 during machining, a cold-rolled sheet between the plate shearing machine 3 and the steel belt 8 roll is lapped on a conveying roller 2, the cold-rolled sheet with the corresponding length is pulled according to requirements, the plate shearing machine 3 is started to cut the cold-rolled sheet to the corresponding size, the plate shearing machine 3 is adopted for blanking, and the blanking tolerance is controlled, wherein the length and the width are less than or equal to 1.
After the plate cutting is finished, putting the cold-rolled sheet into a special leading-free two-roll plate bending machine 4 to roll the cold-rolled sheet into a cylindrical shape, wherein two opposite sides are in contact; the bottom of the special straight seam automatic welding handle head 504 and the bottom of the automatic polishing machine 7 are always positioned at a certain height above the cold-rolled sheet in the winding process, and the initial positions of the welding handle head 504 and the automatic polishing machine 7 do not influence the plate rolling work of the cold-rolled sheet.
And rolling the cold-rolled sheet into a sleeve 9 by a special leading-free two-roller plate rolling machine 4, wherein the opposite-edge contact position is a position needing welding.
Step two, as shown in fig. 1-3, after the plate rolling is finished, the position of the butt weld 901 of the sleeve 9 is vertically upward by controlling the special no-lead two-roll plate rolling machine 4, and the sleeve 9 is arranged on the special no-lead two-roll plate rolling machine 4; the position of the welding seam 901 of the sleeve 9, the automatic polishing machine 7 and the welding handle head 504 correspond up and down', so that when the butt joint position of the sleeve 9 is vertically upward, the butt joint position is positioned right below the welding handle head 504 and the automatic polishing machine 7.
The transverse guide rail group 502 is fixedly arranged between the tops of the two gantry supports 501; the longitudinal guide rail set 503 is slidably connected to the transverse guide rail set 502; one side of the longitudinal guide rail group 503 is connected with a fixing plate 505 in a sliding way; the welding handle head 504 is fixedly arranged on the fixing plate 505; a fixing frame 506 is arranged on the left side of the fixing plate 505; the automatic polishing machine 7 in step f) is fixedly arranged on the fixing frame 506', so that the welding handle 504 can be freely adjusted to a specified position in the horizontal direction by controlling the longitudinal guide rail group 503 to slide left and right on the transverse guide rail group 502.
Adjusting the welding handle head 504 to the leftmost end of the butt joint position of the sleeve 9; then, the fixing plate 505 slides up and down on the longitudinal guide rail group 503, the distance between the bottom of the welding handle head 504 and the butt joint position of the sleeve 9 can be freely adjusted, and the welding machine and the automatic polishing machine 7 are started after the welding handle head 504 is adjusted to be at the proper distance.
Because the welding handle head 504 is fixed on the fixing plate 505, and the automatic polishing machine 7 is fixed on the fixing plate 505 through the fixing frame 506, when the welding handle head 504 moves downwards, the fixing plate 505 can drive the automatic polishing machine 7 to move downwards through the fixing frame 506, and when the welding handle head 504 is adjusted to be at a specified interval with the welding position, the bottom polishing disk of the automatic polishing machine 7 is just aligned with the butt joint position of the cold rolling sleeve 9.
Step three, as shown in fig. 1-5, when the welding machine and the automatic polishing machine 7 are started, the welding machine welds the left end butt joint position of the sleeve 9, and simultaneously the longitudinal guide rail group 503 slowly slides to the right side along the transverse guide rail group 502, when the longitudinal guide rail group 503 moves to the right side, the fixing plate 505 and the fixing frame 506 drive the welding handle head 504 and the automatic polishing machine 7 to move to the right side together, and when the welding handle head 504 moves to the right side slowly, the butt joint position of the sleeve 9 is welded from the left to the right in sequence; because the automatic polishing machine 7 is arranged at the left side position of the welding handle head 504, after the welding handle head 504 is welded towards the right side (about 10-20 seconds), the automatic polishing machine 7 moves to the welding position, and when the automatic polishing machine 7 moves to the welding position, the automatic polishing machine 7 cleans welding slag at the welding position and polishes the welding position.
When the sleeve 9 is welded to the rightmost end, the welding handle head 504 automatically stops working under the action of the induction probe on one side of the welding handle head 504, the welding work of the sleeve 9 is finished, at the moment, the longitudinal guide rail group 503 continuously slides to the right side along the transverse guide rail group 502, the automatic polishing machine 7 continuously cleans and polishes the welding line 901 of the automatic polishing machine to the right side, when the automatic polishing machine 7 moves to the rightmost end of the sleeve 9, the automatic polishing machine 7 stops working, meanwhile, the longitudinal guide rail group 503 stops sliding to the right side, and one-time polishing is finished.
The welding is set up at the top in sleeve 9 gap with head 504, and the welding seam 901 position hot melt during welding flows down under the action of gravity to compensate the space of below, it is more firm to weld, and the welding effect is better, and the sleeve 9 intensity of making is higher.
Step four, with reference to fig. 1 to 5, after the first polishing of the position of the weld 901 of the sleeve 9 is completed, starting the hydraulic cylinder 603 on the self-made hydraulic calibrator 6, because the slide 602 is slidably connected to the right side of the base 601; the hydraulic cylinder 603 is fixedly arranged at the bottom of the base 601; the top of the telescopic rod of the hydraulic cylinder 603 is fixed with the sliding seat 602; the right side of the sliding seat 602 is provided with three correcting roller shafts 604', the hydraulic cylinder 603 can push the sliding seat 602 to vertically and upwardly slide along the base 601 through the telescopic rod when working, and the sliding seat 602 can drive the three correcting roller shafts 604 on the right side to simultaneously and upwardly move when upwardly sliding; because the base 601 is fixedly arranged on the left side wall plate of the leading-end-free two-roller plate bending machine, and the three correcting roller shafts 604 are arranged inside the sleeve 9', the cold-rolled sleeve 9 is tensioned when the three correcting roller shafts 604 move upwards; the three correcting roller shafts 604 are fixed when they move to the specified positions, and the outer diameter of the circle formed between the three correcting roller shafts 604 is equal to the inner diameter of the sleeve 9.
And starting the special no-leading two-roller plate bending machine 4 again, wherein the diameter of an outer circle formed between the three correction roller shafts 604 is equal to the inner diameter of the sleeve 9, so that when the plate bending machine performs plate bending in the state, the three correction roller shafts 604 above the special no-leading two-roller plate bending machine perform the roundness correction effect on the cold-rolled sleeve 9, after the special no-leading two-roller plate bending machine 4 runs for a period of time in the state, the roundness of the sleeve 9 is measured by a measuring tool, the roundness tolerance of a winding drum is smaller than or equal to 1.5mm, and if the special no-leading two-roller plate bending machine is unqualified, the sleeve 9 is continuously rotated until the tolerance of the sleeve 9.
Step five, as shown in the combined drawings of fig. 1-5, after the self-made hydraulic calibrator 6 finishes calibrating the sleeve 9, the sleeve 9 is rotated to enable the position of the welding line 901 of the sleeve to face upwards again, the automatic polishing machine 7 is started again at the moment, the welding handle head 504 is closed, the longitudinal guide rail group 503 is controlled to slide towards the left side along the transverse guide rail group 502, the automatic polishing machine 7 is driven to perform secondary polishing on the position of the welding line 901 of the longitudinal guide rail group 503 when the longitudinal guide rail group 503 slides towards the left side, when the automatic polishing machine 7 moves to the leftmost end of the sleeve 9, the automatic polishing machine 7 continues to move to the left side, the welding handle head 504 is moved out of the left end of the sleeve 9 until the welding handle head 504 and the automatic polishing machine 7 move to the leftmost end, at the moment, the fixing seat 506 moves upwards to drive the welding handle head 504 and the automatic polishing machine 7 to lift up, the welding handle head 504 and the automatic polishing machine 7 are restored to the initial positions, and the welding handle head 504 and the automatic polishing machine 7 are reset.
After secondary polishing, the chord height tolerance of the arc part of the welding line 901 is basically less than or equal to 0.5mm, the arc connecting part has no obvious bulge after polishing, and the arc connecting part which does not meet the requirement is repaired manually by a hand-held external polishing machine.
And then controlling the self-made hydraulic correcting machine 6 to enable the correcting roller shaft 604 to fall, relieving the tensioning state of the sleeve 9, stopping the self-made hydraulic correcting machine 6 when the telescopic rod of the self-made hydraulic correcting machine 6 falls back to the lowest position, opening the wallboard on the right side of the plate rolling machine at the moment, withdrawing the sleeve 9, and closing the wallboard on the right side of the plate rolling machine after withdrawing the sleeve 9.
Performing secondary inspection, measuring the roundness and diameter of the inner hole, determining that the product is qualified when the tolerance is less than or equal to 1.5mm, and returning unqualified products to the corresponding process for repairing; and finally, grinding the qualified sleeve 9 by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of the sleeve are respectively 50mm wide, spraying paint, coating oil inside and outside the sleeve to prevent rust, and finishing the whole manufacturing process of the cold-rolled sleeve 9.
Through trial production of a prototype of 60 pieces of sleeves 9 in 3 batches and tracking of the on-machine use condition, the designed technical parameters and dimensional tolerance can be met, the on-machine use condition is good, and the influence on the surface quality of the steel strip 8 is not found. Meanwhile, the productivity and equipment arrangement of the whole production line arrange the production according to a standardized and assembly line operation mode, and the stable product quality can be ensured.
In conclusion, the Q345-B material, the cold-rolled sheet with the thickness of 3-8mm and the cold-rolled sheet with the tensile strength of 550-600 Mpa are taken as raw materials to replace the traditional seamless steel pipe, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve 9 is reduced. The cold-rolled sleeve 9 is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved; the cold-rolled steel plate replaces the traditional seamless steel pipe to process the sleeve 9, the processing cost is low, the production efficiency is high, and the problems that the cost of raw materials is high, the processing is difficult and the production efficiency is low when the cold-rolled sleeve is manufactured by cold heading and chambering of the seamless steel pipe are solved; the special straight seam automatic welding machine 5 and the automatic polishing machine 7 are integrated, when the welding handle head 504 is used for welding the straight seam position of the sleeve 9, the rear polishing machine is used for polishing the welding seam 901 behind the welding handle head 504 for the first time, when the welding head is reset, the polishing machine is reset simultaneously to polish the welding seam 901 for the second time, the polishing effect is good, the welding and polishing processes are designed into a whole, and the manufacturing cost of equipment is low.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the invention belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. A production process for preparing a cold-rolled thin-walled sleeve is characterized by comprising the following steps of: the device comprises an uncoiler, a conveying roller, a plate shearing machine, a special no-lead two-roller plate bending machine, a special straight seam automatic welding machine, a self-made hydraulic pressure correcting machine, an automatic polishing machine, a steel belt and a sleeve; the processing technology for preparing the cold-rolled thin-wall sleeve comprises the following steps:
selecting raw materials, namely Q345-B, a cold-rolled sheet with the thickness of 3-8mm, and the tensile strength of the material is 550-600 Mpa;
blanking: feeding by an uncoiler and blanking by a plate shearing machine, and controlling the blanking tolerance, wherein the length and width tolerance is less than or equal to 1.5 mm;
plate rolling: using a special non-leading two-roller veneer reeling machine drum;
automatic welding: surfacing a butt weld by using a special straight seam automatic welding machine;
and (3) type correction: correcting the shape by using a self-made hydraulic shape correcting machine to correct the roundness of the winding drum and the radian of a welding seam;
polishing: polishing the welding seam by using an automatic polishing machine, and inspecting by using an arc measuring block;
and (4) checking: measuring the roundness diameter of the inner hole, wherein the tolerance is less than or equal to 1.5mm, and obtaining a qualified product;
packaging: and (3) polishing by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of each pattern are 50mm wide, spraying paint, and coating oil inside and outside to prevent rust.
2. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the special straight seam automatic welding machine in the step d) and the automatic polishing machine in the step f) are arranged into a whole.
3. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the special straight seam automatic welding machine in the step d) comprises a gantry support, a transverse guide rail group, a longitudinal guide rail group and a welding handle head; the transverse guide rail group is fixedly arranged between the tops of the two gantry supports; the longitudinal guide rail group is connected to the transverse guide rail group in a sliding manner; one side of the longitudinal guide rail group is connected with a fixing plate in a sliding manner; the welding handle head is fixedly arranged on the fixing plate; a fixing frame is arranged on the left side of the fixing plate; the automatic polishing machine in the step f) is fixedly arranged on the fixing frame.
4. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the sleeve is arranged on the special no-leading two-roller plate bending machine; the sleeve welding seam position, the automatic polishing machine and the welding handle head are vertically corresponding.
5. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the self-made hydraulic pressure correcting machine in the step e) and the special no-leading-end two-roller plate bending machine in the step c) are arranged into a whole.
6. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the self-made hydraulic sizing machine comprises a base, a sliding seat and a hydraulic cylinder; the base is fixedly arranged on a left side wall plate of the leading-end-free two-roller plate bending machine; the sliding seat is connected to the right side of the base in a sliding manner; the hydraulic cylinder is fixedly arranged at the bottom of the base; the top of the telescopic rod of the hydraulic cylinder is fixed with the sliding seat; and three correction roller shafts are arranged on the right side of the sliding seat.
7. A production process for the production of cold-rolled thin-walled sleeves according to claim 6, characterized in that: the three correcting roller shafts are all arranged inside the sleeve; the diameter of an excircle formed among the three correction roller shafts is equal to the inner diameter of the sleeve.
8. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the tolerance of the chord height at the arc position of the welding line is less than or equal to 0.5mm, and the arc connecting position is required to have no obvious bulge after polishing.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111251006A (en) * | 2020-03-03 | 2020-06-09 | 浙江上风高科专风实业有限公司 | Automatic production line for fan housing |
| CN114905290A (en) * | 2022-05-18 | 2022-08-16 | 河南郾漯粮食机械有限公司 | Cold rolling device for producing side plate of grain conveyor |
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| CN207788252U (en) * | 2017-12-27 | 2018-08-31 | 太原融合智慧科技有限公司 | A kind of bottomless automatic production line of steel drum |
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| CN1134315C (en) * | 1999-03-19 | 2004-01-14 | 湖北重型机器集团有限公司 | Correct plate-rolling machine |
| CN1298780A (en) * | 2000-12-20 | 2001-06-13 | 华中科技大学 | Method and equipment for directly and quickly manufacturing mould and parts |
| CN103949820A (en) * | 2014-04-27 | 2014-07-30 | 苏州创维晟自动化科技有限公司 | Quick thread-shaped automatic welder |
| CN107263031A (en) * | 2017-06-26 | 2017-10-20 | 山东美陵化工设备股份有限公司 | Cylinder is without pre-bending edge rolling moulding process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111251006A (en) * | 2020-03-03 | 2020-06-09 | 浙江上风高科专风实业有限公司 | Automatic production line for fan housing |
| CN114905290A (en) * | 2022-05-18 | 2022-08-16 | 河南郾漯粮食机械有限公司 | Cold rolling device for producing side plate of grain conveyor |
| CN114905290B (en) * | 2022-05-18 | 2024-01-26 | 河南郾漯粮食机械有限公司 | Cold rolling device for producing side plates of grain conveyor |
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