Welding equipment and method for metal flexible membrane tube
By designing a welding equipment for metal flexible membrane cylinders and using spiral welding methods, the problems of cumbersome processes, difficult to control molding accuracy and discontinuous welding in the prior art are solved, and efficient and accurate membrane cylinder production is achieved.
Patent Information
- Application Number
- CN202411407832.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-02-07
AI Technical Summary
The existing metal filter bag membrane cylinder bag making process is cumbersome, the molding size control is difficult, the welding operation is complicated and continuous welding cannot be achieved, resulting in low efficiency.
A welding equipment for metal flexible membrane cylinders is designed, including feeding devices and welding devices. The spiral welding method is adopted to achieve stable movement and precise welding of the membrane through the cooperation of the spiral grooves on the molding mold and the folded edges of the membrane.
The production process is simplified, the forming accuracy is improved, continuous welding is realized, production efficiency and cost-effectiveness are improved, and the operation is relatively simple.
Smart Images
Figure CN119387922A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of metal flexible membrane cylinders, and in particular to a welding device and method for metal flexible membrane cylinders. Background Art
[0002] Metal filter bag dust removal is currently a technology commonly used to treat flue gas emissions in large-scale production, and its manufacturing process is also constantly improving. The bag making process of metal filter bags mainly involves making sheet film materials into round film cylinders, which is a major link in the entire bag making process. In the existing technology, the rolled film material is first cut into sheet film materials, and then the sheet film materials are wrapped on a core rod and formed, and then longitudinally welded into a cylindrical shape. The above production process has the following disadvantages: (1) Multiple production processes The roll film material needs to be cut into sheets first, and then the width of the single sheet of film material needs to be cut into the required standard width. The production process is complex and cumbersome.
[0003] (2) It is difficult to control the size of the film tube The outer circle accuracy of the membrane cylinder is required to be relatively high in the entire length direction. In the existing equipment, the forming mold (i.e., the core rod) of the membrane cylinder is generally a 1.7~2.0 meter long inflatable shaft. When the inflatable shaft is inflated, its accuracy is not a circle, but a non-circular body composed of multiple arc surfaces. It is generally measured by circumference, which is controlled at the circumference value of the hole tube + 1mm, with an accuracy of ±0.2, to ensure that the produced membrane cylinder can be well fitted on the hole tube. The circumference accuracy is ±0.2, and the dimensional accuracy of the converted diameter is ±0.2 / π=±0.064mm. It is difficult for the inflatable shaft to control this accuracy, and manual trimming is required. At the same time, each pressing plate is required to accurately press the end of the membrane material during welding, otherwise the welding wheel will drag the membrane material when pressing and rolling during welding, and it is also difficult to ensure that the end of the membrane material on the entire line is pressed.
[0004] (3) Welding operation is relatively complicated During the production process, the film materials need to be placed one by one on the fixed position of the feeding table, and a small section of the film material at both ends of the length direction that needs to be welded needs to be manually bent into a small arc in advance to facilitate welding with welding wheels.
[0005] (4) Unable to weld continuously According to point (1), during processing, the rolled film material can only be pre-cut into sheet film materials of suitable sizes and then placed in the mold for welding and forming. After welding, the size needs to be corrected. Only one film tube can be produced each time, continuous welding cannot be achieved, and the welding efficiency is low. Summary of the invention
[0006] The object of the present invention is to provide a welding device and method for a metal flexible membrane cylinder, so as to solve the problems existing in the prior art, simplify the production process and realize the continuous welding of the metal flexible membrane cylinder.
[0007] In order to achieve the above object, one of the solutions of the present invention is: A welding device for a metal flexible film tube, comprising a feeding device and a welding device; the feeding device comprises a front guide plate, a roller mechanism and a rear guide plate arranged in sequence along the feeding direction; the front guide plate is the feeding end, and the rear guide plate is connected to the welding device; the roller mechanism comprises a pressure roller and a support roller arranged up and down, and an annular boss is arranged on the circumference of one end of the pressure roller; in the feeding direction, a guide groove opposite to the boss is arranged on one side of the rear guide plate; the welding device comprises a cylindrical forming mold, and an upper welding wheel and a lower welding wheel; the axis of the forming mold forms an angle less than 90° with the straight line of the feeding direction of the feeding device The circumferential surface of the forming model is provided with a spiral groove connected with the guide groove, a welding opening is provided in the trajectory of the spiral groove, and the welding opening is colinear with the guide groove; the upper welding wheel and the lower welding wheel are respectively arranged on the outer side and the inner side of the welding opening, and both are arranged along the tangent of the spiral groove.
[0008] The angle The calculation formula is ,in represents the pitch of the spiral groove, Indicates the outer diameter of the orifice tube that matches the metal flexible membrane cylinder to be processed.
[0009] The feeding device also includes a front pressing plate arranged above the front material guide plate and a rear pressing plate arranged above the rear material guide plate.
[0010] The roller mechanism includes a bracket for fixing the support roller, a lifting block slidably fitted in the bracket, an adjusting bolt passing through the upper surface of the bracket and threadedly connected to the lifting block, and a spring sleeved on the adjusting bolt; the end of the pressure roller is fixed on the lifting block.
[0011] The output end of the rear guide plate is provided with a bevel parallel to the axis of the forming die.
[0012] The peripheral surface of the forming mold is provided with an opening, a detachable material guide cover is installed at the opening, and the welding port is arranged on the material guide cover.
[0013] A welding wheel support with adjustable height is arranged in the forming mold, and the lower welding wheel is installed on the welding wheel support.
[0014] The molding die is provided with electric wires and a water cooling system.
[0015] The second solution of the present invention is: A welding method for a metal flexible membrane cylinder, using the welding device for the metal flexible membrane cylinder, comprising: Step 1, feeding the rolled film material into the feeding device, the film material moves along the direction of the front material guide plate, the roller mechanism and the rear material guide plate, and one side of the film material is pressed by the boss roller of the pressing roller to form a folded edge when passing through the roller mechanism; Step 2: The film material is at an angle Entering the molding die and spirally winding around the peripheral surface of the molding die, guiding the film material forward so that the folded edge falls into the spiral groove of the molding die, and after the film material goes around the molding die once, its flat edge presses the upper surface of the folded edge; Step 3, the upper welding wheel and the lower welding wheel are energized and the stacked flat edges and folded edges are welded; the upper welding wheel serves as a driving wheel, and after the upper welding wheel rotates, it drives the film material to make a spiral motion along the direction of the spiral groove, so that the film material as a whole moves relatively along the axial direction of the forming mold to achieve output; Step 4: Cut the output cylindrical film material according to the required film tube length.
[0016] After adopting the above technical solution, the present invention has the following technical effects: (1) The production process is simplified. The rolled film material only needs to be cut into pieces according to the required width and then rolled up, and then it can be put into the equipment for continuous spiral welding; (2) Due to the use of spiral welding, the equipment molding size is relatively small, especially the length of the molding die is relatively short, and the processing accuracy can be higher; the spiral groove is opened on the molding die, and the processing of the spiral groove can be completed by a CNC machine tool; (3) The present invention only needs to manually guide the folded edge of the film material to be wound around the spiral groove of the forming mold. After the film material is wound around the forming mold for one circle, the flat edge of the film material overlaps with its folded edge. Then, the upper welding wheel can be pressed and the machine can be powered on to start continuous welding until the film material is welded at one time. The production is continuous, efficient, low-cost, and simple to operate. (4) The present invention controls the axial movement of the film material on the forming die by coordinating the folded edge of the film material with the spiral groove of the forming die, thereby achieving stable movement of the film material and ensuring accurate continuous welding; (5) According to the actual length of the rolled film material, the present invention can weld a relatively long film tube, which can then be cut into the required size. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional diagram of a device according to a specific embodiment of the present invention; Figure 2It is a three-dimensional diagram of a feeding device according to a specific embodiment of the present invention; Figure 3 It is a structural schematic diagram of a welding device according to a specific embodiment of the present invention; Figure 4 It is a schematic diagram of the film material state after rolling according to a specific embodiment of the present invention; Figure 5 It is a working principle diagram of a specific embodiment of the present invention; Description of Figure Numbers: 1-feeding device; 11-front guide plate; 12-roller mechanism; 121-pressing roller; 1211-boss; 122-supporting roller; 123-bracket; 124-lifting block; 125-adjusting bolt; 126-spring; 13-rear guide plate; 131-guide groove; 132-bevel; 14-front pressure plate; 15-rear pressure plate; 2-welding device; 21-forming mold; 211-spiral groove; 212-welding port; 213-opening; 214-material guide cover; 22-upper welding wheel; 23-lower welding wheel; 24-welding wheel support; a-film material; b-folded edge; c-flat edge. DETAILED DESCRIPTION
[0018] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.
[0019] refer to Figure 1-4 As shown, the present invention discloses a welding device for a metal flexible film tube, comprising a feeding device 1 and a welding device 2; The feeding device 1 comprises a front guide plate 11, a roller mechanism 12 and a rear guide plate 13 which are sequentially arranged along the feeding direction; the front guide plate 11 is the feeding end, and the rear guide plate 13 is connected to the welding device 2; the roller mechanism 12 comprises a pressing roller 121 and a supporting roller 122 which are arranged up and down, and a ring-shaped boss 1211 is arranged on one end of the pressing roller 121; in the feeding direction, a guide groove 131 which is opposite to the boss 1211 is arranged on one side of the rear guide plate 13, which is used to make way and guide the folded edge b of the film material a pressed out by the roller; The welding device 2 includes a cylindrical forming mold 21, an upper welding wheel 22 and a lower welding wheel 23; the axis L1 of the forming mold 21 forms an angle less than 90° with the straight line L2 of the feeding direction of the feeding device 1. , and the circumferential surface of the forming model 21 is provided with a spiral groove 211 connected with the guide groove 131, and a welding opening 212 is provided in the trajectory of the spiral groove 211, and the welding opening 212 is colinear with the guide groove 131; the upper welding wheel 22 and the lower welding wheel 23 are respectively arranged on the outer side and the inner side of the welding opening 212, and both are arranged along the tangent of the spiral groove 211.
[0020] A specific embodiment of the above-mentioned welding equipment is shown below.
[0021] The above angle The calculation formula is ,in represents the pitch of the spiral groove 211, Indicates the outer diameter of the orifice tube that matches the metal flexible membrane cylinder to be processed.
[0022] The feeding device 1 further comprises a front pressing plate 14 disposed above the front material guide plate 11 and a rear pressing plate 15 disposed above the rear material guide plate 13. The front pressing plate 14 and the rear pressing plate 15 can prevent the film material a from warping and bending during the process of feeding the film material a forward.
[0023] The roller mechanism 12 comprises a bracket 123 for fixing a support roller 122, a lifting block 124 slidably fitted in the bracket 123, an adjusting bolt 125 passing through the upper surface of the bracket 123 and threadedly connected to the lifting block 124, and a spring 126 sleeved on the adjusting bolt 125; the end of the pressure roller 121 is fixed on the lifting block 124. Thus, the distance between the pressure roller 121 and the support roller 122 can be flexibly adjusted to adapt to different working conditions.
[0024] The output end of the rear guide plate 13 is provided with a bevel 132 parallel to the axis L1 of the molding die 21 .
[0025] The circumferential surface of the molding die 21 is provided with an opening 213, and a detachable material guide cover 214 is installed at the opening 213. The welding port 212 is provided on the material guide cover 214. The opening 213 can be provided to facilitate installation of the lower welding wheel 23 and other components in the molding die 21, and the spiral groove 211 can be connected after being covered with the material guide cover 214.
[0026] The molding die 21 is provided with a height-adjustable welding wheel support 24 , on which the lower welding wheel 23 is mounted. The height adjustment function of the welding wheel support 24 is used to adjust the height of the lower welding wheel 23 , thereby enabling the equipment to produce film cylinders with different inner diameters.
[0027] The molding die 21 is provided with electric wires and a water cooling system for realizing electrical connection and cooling functions.
[0028] refer to Figure 5 As shown, the present invention also discloses a welding method for a metal flexible membrane cylinder, using the welding device for the metal flexible membrane cylinder, comprising: Step 1, feeding the rolled film material into the feeding device 2, the film material a moves along the direction of the front material guide plate 11, the roller mechanism 12 and the rear material guide plate 13, and one side of the film material a is pressed by the boss 1211 of the pressing roller 121 to form a folded edge b when passing through the roller mechanism 12; Step 2: Film material a at an angle Entering the forming mold 21 and spirally winding around the circumference of the forming mold 21, the film material a is guided forward so that the folded edge b falls into the spiral groove 211 of the forming mold 21. After the film material a circles around the forming mold 21, its flat edge c presses the upper surface of the folded edge b; Step 3, the upper welding wheel 22 and the lower welding wheel 23 are energized and the stacked flat edge c and the folded edge b are welded; the upper welding wheel 22 is used as a driving wheel, and after the upper welding wheel 22 rotates, it drives the film material a to make a spiral motion along the direction of the spiral groove 211, so that the film material a as a whole moves relatively along the axial direction of the forming mold 21 to achieve output; Step 4: Cut the output cylindrical film material a according to the required film tube length.
[0029] Through the above scheme, the present invention has the following technical effects: (1) The production process is simplified. The rolled film material a only needs to be cut into pieces according to the required width and then rolled up, and can be put into the equipment for continuous spiral welding; (2) Due to the use of spiral welding, the equipment has a relatively small size, especially the length of the molding die 21 is relatively short, and the processing accuracy can be higher; the spiral groove 211 is opened on the molding die 21, and the processing of the spiral groove 211 can be completed by a CNC machine tool; (3) The present invention only needs to manually guide the folded edge b of the film material a to be wound around the spiral groove 211 of the forming mold 21. After the film material a is wound around the forming mold 21 for one circle, the flat edge c of the film material a is overlapped on its folded edge b. Then, the upper welding wheel 22 can be pressed and powered on to start continuous welding until the film material a is welded at one time. The production is continuous, efficient, low-cost, and easy to operate. (4) The present invention controls the axial movement of the film material a on the forming mold 21 by cooperating with the spiral groove 211 of the forming mold 21 through the folding edge b of the film material a, thereby achieving stable movement of the film material a and ensuring accurate continuous welding; (5) According to the actual length of the rolled film material a, the present invention can weld a relatively long film tube, which can then be cut into the required size.
[0030] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.
Claims
1. A welding device for a metal flexible film cylinder, characterized in that: It includes a feeding device and a welding device; The feeding device comprises a front guide plate, a roller mechanism and a rear guide plate which are sequentially arranged along the feeding direction; the front guide plate is a feeding end, and the rear guide plate is connected to the welding device; the roller mechanism comprises a pressure roller and a support roller which are arranged up and down, and a ring-shaped boss is arranged on one end of the pressure roller; in the feeding direction, a guide groove which is opposite to the boss is arranged on one side of the rear guide plate; The welding device comprises a cylindrical forming die, an upper welding wheel and a lower welding wheel; the axis of the forming die forms an angle less than 90° with the straight line of the feeding direction of the feeding device The circumferential surface of the forming model is provided with a spiral groove connected with the guide groove, a welding opening is provided in the trajectory of the spiral groove, and the welding opening is colinear with the guide groove; the upper welding wheel and the lower welding wheel are respectively arranged on the outer side and the inner side of the welding opening, and both are arranged along the tangent of the spiral groove.
2. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: The angle The calculation formula is ,in represents the pitch of the spiral groove, Indicates the outer diameter of the orifice tube that matches the metal flexible membrane cylinder to be processed.
3. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: The feeding device also includes a front pressing plate arranged above the front material guide plate and a rear pressing plate arranged above the rear material guide plate.
4. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: The roller mechanism includes a bracket for fixing the support roller, a lifting block slidably fitted in the bracket, an adjusting bolt passing through the upper surface of the bracket and threadedly connected to the lifting block, and a spring sleeved on the adjusting bolt; the end of the pressure roller is fixed on the lifting block.
5. The welding device for a metal flexible film tube according to claim 1, characterized in that: The output end of the rear guide plate is provided with a bevel parallel to the axis of the forming die.
6. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: The peripheral surface of the forming mold is provided with an opening, a detachable material guide cover is installed at the opening, and the welding port is arranged on the material guide cover.
7. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: A welding wheel support with adjustable height is arranged in the forming mold, and the lower welding wheel is installed on the welding wheel support.
8. The welding device for a metal flexible membrane tube according to claim 1, characterized in that: The molding die is provided with electric wires and a water cooling system.
9. A method for welding a metal flexible membrane cylinder, using the welding device for a metal flexible membrane cylinder as claimed in any one of claims 1 to 8, characterized in that include: Step 1, feeding the rolled film material into the feeding device, the film material moves along the direction of the front material guide plate, the roller mechanism and the rear material guide plate, and one side of the film material is pressed by the boss roller of the pressing roller to form a folded edge when passing through the roller mechanism; Step 2: The film material is at an angle Entering the molding die and spirally winding around the peripheral surface of the molding die, guiding the film material forward so that the folded edge falls into the spiral groove of the molding die, and after the film material goes around the molding die once, its flat edge presses the upper surface of the folded edge; Step 3, the upper welding wheel and the lower welding wheel are energized and the stacked flat edges and folded edges are welded; the upper welding wheel serves as a driving wheel, and after the upper welding wheel rotates, it drives the film material to make a spiral motion along the direction of the spiral groove, so that the film material as a whole moves relatively along the axial direction of the forming mold to achieve output; Step 4: Cut the output cylindrical film material according to the required film tube length.