Auxiliary device for tin soldering of filter element

Abstract

The utility model discloses an auxiliary device for tin soldering of a filter element, which relates to the technical field of filter screen welding and comprises a mounting frame body, and the mounting frame body comprises a bottom plate and a support body fixed on the bottom plate; the filter screen sheet guide plate is parallel to the plate surface of the bottom plate, and a guide channel for movably penetrating and guiding a filter screen sheet to be welded is defined between the opposite plate surfaces of the filter screen sheet guide plate and the bottom plate; a clamping rotation mechanism; the clamping and rotating mechanism comprises a clamping part for clamping the filter screen framework and a rotating driving part for driving the clamping part to rotate so as to wind the filter screen sheet on the filter screen framework; the clamping part is rotationally mounted on the support body and corresponds to the side, far away from the bottom plate, of the filter screen sheet guide plate; the rotation driving end of the rotation driving part is in transmission connection with the clamping part to drive the clamping part to rotate. According to the utility model, the control difficulty in the filter element welding process can be reduced, the winding precision of the filter screen sheets on the filter screen framework is improved, and the filtering effect of the filter screen is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter screen welding, in particular to an auxiliary device for filter element soldering. Background Art

[0002] With the development of hydraulic technology, the control of hydraulic oil contamination has received more and more attention. The filter is an important auxiliary component for controlling the contamination of hydraulic oil in the hydraulic system. It can remove pollutants in the oil, maintain the cleanliness of the oil, and ensure the reliability of the hydraulic components. For example, the reversing valve in practical applications needs to install a filter in its oil inlet channel to filter impurities in the hydraulic oil circuit and prevent impurities in the pipeline from entering the reversing valve to damage the valve core and body. Brass mesh is generally used to make the filter element of the filter. By winding the brass mesh in multiple layers, the effective size of the through hole can be reduced. Increasing the number of filter layers can increase the dirt holding capacity, filter out impurities as much as possible, and improve the purity of the oil.

[0003] The existing process is that the operator manually winds the brass mesh, which completely relies on the operator's personal experience and ability. The welding surface quality is visually inspected to see if there are pores and slag inclusions. There is no inspection requirement for welding bonding strength, which is a big hidden danger to product quality. In the process of barehand welding, the operator relies on the hand strength to wind the two layers of filter mesh. If the two layers of filter mesh separate, the mesh opening size will increase, which will reduce the filtration efficiency. At present, there is no existing equipment that can meet the ever-expanding production needs of filter element soldering.

[0004] In response to the above problems, how to provide an auxiliary device for filter element soldering that can reduce the control difficulty during the filter element welding process, ensure that the gap between two or more layers of filter mesh wound on the filter mesh frame is small enough to reduce the size of the filtering pores of the filter mesh, and improve the filtering effect of the filter mesh is an issue that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of existing production and provide an auxiliary device for soldering a rotary filter element which has a simple structure, is easy to operate, has a low manufacturing cost and can improve product welding quality and production efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an auxiliary device for soldering a filter element, wherein the filter element comprises a filter screen frame and a filter screen sheet wound and welded on the outer peripheral side of the filter screen frame, comprising:

[0008] A mounting frame, the mounting frame comprising a base plate and a support body fixed on the base plate;

[0009] A filter mesh guide plate, the filter mesh guide plate is arranged parallel to the bottom plate surface, and a guide channel for movably passing and guiding the filter mesh to be welded is defined between the two opposite plate surfaces;

[0010] A clamping and rotating mechanism; the clamping and rotating mechanism comprises a clamping portion for clamping the filter frame and a rotating driving portion for driving the clamping portion to rotate so as to wind the filter sheet onto the filter frame; the clamping portion is rotatably mounted on the support body and corresponds to the side of the filter sheet guide plate away from the bottom plate; the rotating driving end of the rotating driving portion is transmission-connected to the clamping portion to drive it to rotate.

[0011] When welding filter element parts using an auxiliary device for filter element soldering provided by the utility model, the filter screen frame is clamped and fixed by the clamping part, one end of the filter screen piece is passed through the guide channel and covered on the filter screen frame, one end of the filter screen piece is welded and fixed on the filter screen frame according to the welding process plan, and then the clamping part is driven to rotate by the rotating drive part to drive the filter screen frame to rotate, so that the filter screen piece can be wound on the filter screen frame; during the winding process of the filter screen piece, the guide channel plays a role of guiding and conveying the filter screen piece to ensure that the filter screen piece can be neatly wound on the filter screen frame, thereby improving the winding accuracy; the utility model has a simple structure and is easy to operate, and can improve the welding quality and production efficiency of the filter element products.

[0012] As a further improvement of the above technical solution, the support body includes a support plate 1 and a support plate 2; the support plate 1 and the support plate 2 are arranged opposite to each other and are both vertically fixed to the upper end of the bottom plate; the filter plate guide plate is installed on the upper end of the bottom plate and is located between the support plate 1 and the support plate 2; a mounting through hole 1 is opened on the surface of the support plate 1 corresponding to the upper side of the filter plate guide plate; a mounting through hole 2 is opened on the surface of the support plate 2 corresponding to the mounting through hole 1;

[0013] The clamping part comprises a left push rod, a right push rod and an adjusting screw; one end of the left push rod is rotatably mounted in the first mounting through hole, and the other end is located between the first support plate and the second support plate to form a first clamping end; one end of the right push rod is movably inserted into the second mounting through hole, and the other end is located between the first support plate and the second support plate to form a second clamping end; a filter frame clamping area is defined between the first clamping end and the second clamping end;

[0014] One end of the adjusting screw is threadedly connected to the second mounting through hole and corresponds to an end of the right push rod away from the left push rod, and the adjusting screw can abut against and drive the right push rod to move closer to the left push rod to adjust the clamping force between the first clamping end and the second clamping end;

[0015] The rotary driving end of the rotary driving part is transmission-connected to the left push rod to drive the left push rod to rotate.

[0016] The beneficial effects of the above technical solution are: when welding the filter element parts, the filter frame is arranged in the filter frame clamping area, and the right push rod can be driven close to the left push rod by screwing the adjusting screw, so that the clamping end one and the clamping end two abut against each other to clamp and fix the two ends of the filter frame; the rotation driving part drives the left push rod to rotate, and then drives the filter frame and the right push rod to rotate synchronously under the action of friction force. At this time, the left push rod rotates and abuts against the adjusting screw, and the adjusting screw can limit the left push rod to prevent it from moving. The screwing force of the adjustment screw is used to clamp the filter frame so that the filter frame does not slide relative to the clamping end one and the clamping end two during the rotation drive.

[0017] As a further improvement of the above technical solution, the side walls opposite to the clamping end 1 and the clamping end 2 are both provided with filter frame end positioning grooves.

[0018] The beneficial effects of the above technical solution are: the two ends of the filter skeleton can be adapted to be embedded in the positioning grooves at the ends of the filter skeleton for precise positioning; the positioning grooves at the ends of the filter skeleton can also increase the friction between the left top rod, the right top rod and the filter skeleton to avoid sliding when the filter skeleton is driven to rotate; positioning and installing the two ends of the filter skeleton by means of the positioning grooves at the ends of the filter skeleton can facilitate installation and disassembly, and the filter skeleton can be removed from the positioning grooves at the ends of the filter skeleton by unscrewing the adjusting screws and moving the right top rod.

[0019] As a further improvement of the above technical solution, the rotation drive unit includes a rotating hand wheel; the rotating hand wheel is located on the side of the support plate 1 away from the support plate 2 and is fixed to one end of the left top rod.

[0020] The beneficial effect of the above technical solution is that the left push rod is driven to rotate by rotating the hand wheel to control the rotation speed and number of revolutions, which is convenient to operate and more stable.

[0021] As a further improvement of the above technical solution, the rotary drive unit further includes a rotary handle; the rotary handle is installed on the circumference side of the rotary handwheel.

[0022] The beneficial effect of the above technical solution is that the rotating handle installed on the circumferential side of the rotating handwheel can assist in rotating the rotating handwheel, and the rotating handle can also act as a pointer to accurately record the rotation starting point and the number of rotations, thereby controlling the number of windings of the filter sheet on the filter frame.

[0023] As a further improvement of the above technical solution, a threaded hole 1 is opened in the middle of the wheel surface of the rotating hand wheel, and a threaded hole 2 is opened on the circumferential side of the wheel surface; one end of the left push rod has an external thread 1 adapted to the threaded hole 1, and one end of the left push rod passes through the mounting through hole 1 and is threadedly connected and fixed in the threaded hole 1 of the rotating hand wheel;

[0024] One end of the rotating handle is provided with external thread 2 adapted to the threaded hole 2, and the rotating handle is threadedly connected and fixed in the threaded hole 1 of the rotating hand wheel.

[0025] As a further improvement of the above technical solution, the thread pair consisting of the external thread 1 and the threaded hole 1 is connected by a reverse thread.

[0026] The beneficial effect of the above technical solution is that the external thread 1 and the threaded hole 1 are connected by reverse thread to prevent loosening during rotation.

[0027] As a further improvement of the above technical solution, the filter plate guide plate includes a pressing plate and two connecting limit plates; the two connecting limit plates are both located below the pressing plate and symmetrically fixed at both ends of the pressing plate; the pressing plate is arranged parallel to the bottom plate surface, and the two connecting limit plates are both fixed parallel to the bottom plate surface; the guiding channel is jointly defined between the pressing plate and the bottom plate and between the two connecting limit plates;

[0028] The plate surface of the pressure plate close to the bottom plate is a pressing plane that can slide against the filter mesh to be welded; the opposite side ends of the two connecting limit plates are both limit ends that can abut against and limit the filter mesh to be welded.

[0029] The beneficial effects of the above technical solution are: when the filter mesh to be welded passes through the guide channel, the pressure plate surface can press and flatten the filter mesh to be welded to prevent the filter mesh from bending and affecting the winding and welding accuracy; the opposite side ends of the two connecting limit plates can abut against and limit the two ends of the filter mesh to be welded in the width direction to prevent the filter mesh from moving left and right during the winding process and causing the winding to be offset.

[0030] As a further improvement of the above technical solution, the filter guide plate also includes a fastening screw; through holes are provided on the surfaces of the two connecting limit plates; threaded holes three are provided on the surface of the base plate corresponding to the two through holes; the fastening screw is movable through the through holes and threadedly connected in the threaded hole three to fasten the two connecting limit plates to the surface of the base plate.

[0031] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses an auxiliary device for filter element soldering, which has the following advantages and beneficial effects:

[0032] 1. The utility model designs and develops a welding auxiliary device according to the design and use requirements of the filter screen, improves the existing manual welding scheme, reduces the control difficulty during the filter element welding process, ensures that the gap between the two or more layers of filter screens wound on the filter screen frame (4) is small enough, achieves the purpose of reducing the size of the filter screen hole, and improves the filtering effect of the filter screen.

[0033] 2. The auxiliary device for soldering the filter element of the utility model has a simple structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the overall structure of an auxiliary device for filter element soldering in the utility model;

[0036] Figure 2 A schematic diagram of the mounting frame structure of an auxiliary device for filter element soldering according to the utility model;

[0037] Figure 3 A schematic side view of a mounting frame of an auxiliary device for filter element soldering according to the utility model;

[0038] Figure 4 A schematic diagram of the structure of a filter mesh guide plate of an auxiliary device for filter element soldering in the utility model;

[0039] Figure 5 A schematic diagram of the structure of a left push rod of an auxiliary device for filter element soldering according to the utility model;

[0040] Figure 6 A schematic diagram of the right push rod structure of an auxiliary device for filter element soldering in the utility model;

[0041] Figure 7 A schematic diagram of the structure of a rotating hand wheel of an auxiliary device for filter element soldering according to the utility model;

[0042] Figure 8 A schematic diagram of the structure of a rotating handle of an auxiliary device for filter element soldering according to the utility model;

[0043] In the figure: 1. mounting frame; 11. bottom plate; 111. threaded hole three; 12. support body; 121. support plate one; 1211. mounting through hole one; 122. support plate two; 1221. mounting through hole two; 2. filter screen guide plate; 21. pressure plate; 211. pressing flat surface; 22. connection limit plate; 221. through hole; 222. limit end; 23. guide channel; 24. fastening screw; 3. Clamping and rotating mechanism; 31. Clamping part; 311. Left top rod; 3111. External thread one; 312. Right top rod; 313. Adjusting screw; 314. Filter frame clamping area; 315. Filter frame end positioning groove; 32. Rotating drive part; 321. Rotating hand wheel; 3211. Threaded hole one; 3212. Threaded hole two; 322. Rotating handle; 3221. External thread two; 4. Filter frame. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 8 As shown, the utility model provides an auxiliary device for soldering a filter element, the filter element includes a filter screen frame 4 and a filter screen sheet (not shown in the figure) wound and welded on the outer peripheral side of the filter screen frame 4, including:

[0049] The mounting frame 1 includes a bottom plate 11 and a support body 12 fixed on the bottom plate 11;

[0050] The filter mesh guide plate 2 is arranged parallel to the bottom plate 11, and a guide channel 23 for movably passing and guiding the filter mesh to be welded is defined between the two opposite plate surfaces;

[0051] The clamping and rotating mechanism 3 comprises a clamping portion 31 for clamping the filter frame 4 and a rotating driving portion 32 for driving the clamping portion 31 to rotate so as to wind the filter sheet onto the filter frame 4; the clamping portion 31 is rotatably mounted on the support body 12 and corresponds to the side of the filter sheet guide plate 2 away from the bottom plate 11; the rotating driving end of the rotating driving portion 32 is transmission-connected to the clamping portion 31 to drive it to rotate.

[0052] When welding filter element parts using an auxiliary device for filter element soldering provided by the utility model, the filter screen frame 4 is clamped and fixed by the clamping part 31, one end of the filter screen piece is passed through the guide channel 23 and covered on the filter screen frame 4, and one end of the filter screen piece is welded and fixed on the filter screen frame 4 according to the welding process plan, and then the clamping part 31 is driven to rotate by the rotating drive part 32 to drive the filter screen frame 4 to rotate, so that the filter screen piece can be wound on the filter screen frame 4; during the winding process of the filter screen piece, the guide channel 23 plays a role of guiding and conveying the filter screen piece to ensure that the filter screen piece can be neatly wound on the filter screen frame 4, thereby improving the winding accuracy; the utility model has a simple structure and is easy to operate, and can improve the welding quality and production efficiency of the filter element products.

[0053] In some embodiments, the support body 12 includes a support plate 1 121 and a support plate 2 122; the support plate 1 121 and the support plate 2 122 are arranged opposite to each other and are both vertically fixed on the upper end of the bottom plate 11; the filter plate guide plate 2 is installed on the upper end of the bottom plate 11 and is located between the support plate 1 121 and the support plate 2 122; a mounting through hole 1 1211 is provided on the surface of the support plate 1 121 corresponding to the upper part of the filter plate guide plate 2; a mounting through hole 2 1221 is provided on the surface of the support plate 2 122 corresponding to the mounting through hole 1 1211;

[0054] The clamping portion 31 includes a left top rod 311, a right top rod 312 and an adjustment screw 313; one end of the left top rod 311 is rotatably installed in the first installation through hole 1211, and the other end is located between the first support plate 121 and the second support plate 122 to form a clamping end 1; one end of the right top rod 312 is movably inserted into the second installation through hole 1221, and the other end is located between the first support plate 121 and the second support plate 122 to form a clamping end 2; a filter frame clamping area 314 is defined between the first clamping end and the second clamping end;

[0055] One end of the adjusting screw 313 is threadedly connected in the second mounting through hole 1221 and corresponds to the end of the right top rod 312 away from the left top rod 311. The adjusting screw 313 can abut against and drive the right top rod 312 to move closer to the left top rod 311 to adjust the clamping force between the clamping end 1 and the clamping end 2.

[0056] The rotation driving end of the rotation driving portion 32 is transmission-connected to the left push rod 311 to drive the left push rod 311 to rotate.

[0057] When welding the filter element parts, the filter frame 4 is arranged in the filter frame clamping area 314, and the right top rod 312 can be driven close to the left top rod 311 by screwing the adjusting screw 313, so that the clamping end one and the clamping end two abut against each other to clamp and fix the two ends of the filter frame 4; the rotation driving part 32 drives the left top rod 311 to rotate, and then drives the filter frame 4 and the right top rod 312 to rotate synchronously under the action of friction force. At this time, the left top rod 311 rotates and abuts against the adjusting screw 313, and the adjusting screw 313 can limit the left top rod 311 to prevent it from moving. The screwing force of the adjustment screw 313 is used to clamp the filter frame 4 so that the filter frame 4 does not slide relative to the clamping end one and the clamping end two during rotation driving.

[0058] In some embodiments, the side walls opposite to the first clamping end and the second clamping end are both provided with a filter frame end positioning groove 315 .

[0059] The two ends of the filter skeleton 4 can be adapted to be embedded in the positioning grooves 315 at the ends of the filter skeleton for precise positioning; the positioning grooves 315 at the ends of the filter skeleton can also increase the friction between the left top rod 311, the right top rod 312 and the filter skeleton 4 to avoid sliding when the filter skeleton 4 is driven to rotate; positioning and installing the two ends of the filter skeleton 4 by means of the positioning grooves 315 at the ends of the filter skeleton can facilitate installation and disassembly, and the filter skeleton 4 can be removed from the positioning grooves 315 at the ends of the filter skeleton by unscrewing the adjusting screws 313 and moving the right top rod 312.

[0060] In some embodiments, the rotation driving unit 32 includes a rotation hand wheel 321 ; the rotation hand wheel 321 is located on the side of the support plate 1 121 away from the support plate 2 122 and is fixed to one end of the left top rod 311 .

[0061] The left top rod 311 is driven to rotate by rotating the hand wheel 321 to control the rotation speed and number of revolutions, which is convenient and more stable to operate.

[0062] In some embodiments, the rotation driving unit 32 further includes a rotation handle 322 ; the rotation handle 322 is installed on the circumference side of the rotation hand wheel 321 .

[0063] The rotating handle 322 is installed on the circumference of the rotating handwheel 321 to assist in rotating the rotating handwheel 321, and the rotating handle 322 can also act as a pointer to accurately record the rotation starting point and the number of rotations, thereby controlling the number of windings of the filter sheet on the filter frame 4.

[0064] In some embodiments, a threaded hole 3211 is provided in the middle of the wheel surface of the rotating hand wheel 321, and a threaded hole 3212 is provided on the circumferential side of the wheel surface; one end of the left top rod 311 has an external thread 3111 adapted to the threaded hole 3211, and one end of the left top rod 311 passes through the mounting through hole 1211 and is threadedly connected and fixed in the threaded hole 3211 of the rotating hand wheel 321;

[0065] One end of the rotating handle 322 has an external thread 2 3221 adapted to the threaded hole 2 3212 , and the rotating handle 322 is threadedly connected and fixed in the threaded hole 1 3211 of the rotating hand wheel 321 .

[0066] In some embodiments, the thread pair consisting of the external thread 3111 and the threaded hole 3211 is connected by a reverse thread.

[0067] When the device is operated, the left hand controls the rotating hand wheel 321, and the external thread 1 3111 and the threaded hole 1 3211 are connected by counter-rotating threads. It is more convenient to rotate the rotating hand wheel 321 in the tightening direction, and it can also prevent loosening during the rotation process.

[0068] In some embodiments, the filter plate guide plate 2 includes a pressing plate 21 and two connecting limit plates 22; the two connecting limit plates 22 are both located below the pressing plate 21 and symmetrically fixed at both ends of the pressing plate 21; the pressing plate 21 is arranged parallel to the surface of the bottom plate 11, and the two connecting limit plates 22 are both fixed parallel to the surface of the bottom plate 11; a guide channel 23 is jointly defined between the pressing plate 21 and the bottom plate 11 and between the two connecting limit plates 22;

[0069] The plate surface of the pressing plate 21 close to the bottom plate 11 is a pressing plane that can slide against the filter mesh to be welded; the opposite side ends of the two connecting limiting plates 22 are both limiting ends that can abut against and limit the filter mesh to be welded.

[0070] When the filter mesh to be welded passes through the guide channel 23, the pressure plate 21 is used to change the feeding direction of the filter, and the surface of the pressure plate 21 can press and flatten the filter mesh to be welded to prevent the filter mesh from bending and affecting the winding and welding accuracy; the rotating filter frame can drive the filter mesh to be wound, and the filter mesh can be pulled and tensioned under the pressure of the pressure plate 21, thereby reducing the layer gap between the multi-layer filter mesh sheets wound on the filter frame; the opposite side ends of the two connecting limit plates 22 can abut against and limit the two ends of the width direction of the filter mesh to be welded to prevent the filter mesh from moving left and right during the winding process and causing the winding to be offset.

[0071] In some embodiments, the filter guide plate 2 also includes a fastening screw 24; two connecting limit plates 22 are provided with through holes 221 on their surfaces; threaded holes three 111 are provided on the surface of the base plate 11 at locations corresponding to the two through holes 221; the fastening screw 24 is movable through the through holes 221 and is threadedly connected in the threaded holes three 111 to fasten the two connecting limit plates 22 to the surface of the base plate 11.

[0072] Specifically, the base plate, support body, filter guide plate, rotating handwheel and rotating handle are all made of stainless steel; the left and right top rods are made of brass, and the adjustment screws are standard M6 screws. There are strict requirements on the external dimensions of the mounting frame. The base plate, support plate 1 and support plate 2 can be made of stainless steel plates that are bent into one piece to form a U-shaped mounting frame; heat treatment procedures are adopted during the processing to ensure the dimensional stability of the parts. The part takes the bottom surface of the base plate as the reference, and the mounting through holes 1 and 2 for the left and right top rods are machined on the two end surfaces of support plate 1 and support plate 2. The two sets of holes are processed in sequence using one-time clamping to ensure that the coaxiality error of the two sets of holes does not exceed 0.01, and the parallelism error with the bottom surface does not exceed 0.02.

[0073] The left push rod is a stepped shaft rod, and the diameter of its right end is larger than that of its left end; the left end of the left push rod is adapted to be installed in a mounting through hole with a diameter of 5mm on the support plate. Taking the outer circle of the left end of the left push rod as the reference, the matching clearance between the left push rod and the mounting through hole is controlled within 0.02mm. The left step end face of the left push rod can slide against the inner side face of the support plate to enable the left push rod to rotate flexibly. After the installation is completed, it is required to have smooth axial movement and radial runout less than 0.02mm; a circular filter skeleton end positioning groove for clamping the workpiece is machined on the right end face of the left push rod. The design requires that the coaxiality error of the inner hole and the outer circle reference of the filter skeleton end positioning groove is less than 0.02mm.

[0074] The right push rod is a stepped shaft rod, and the diameter of its right end is smaller than that of the left end. The right end of the right push rod is adapted to be installed in the second installation hole with a diameter of 5mm on the support plate. Taking the outer circle of the right end of the right push rod as the reference, the matching clearance between the right end of the right push rod and the second installation hole is controlled within 0.02mm. After the installation is completed, it is required to move smoothly in the axial direction and the radial runout is less than 0.02mm. A circular filter skeleton end positioning groove for clamping the workpiece is machined on the left end face of the right push rod. The design requires that the coaxiality error of the inner hole and the outer circle reference of the filter skeleton end positioning groove is less than 0.02mm.

[0075] Install the filter frame to be welded into the inner holes of the left and right push rods, and push the right push rod to move axially through the M6 ​​adjusting screw to lock the filter frame.

[0076] The method of using the device to weld parts is as follows:

[0077] Step 1: Clean the workpieces, tooling and auxiliary materials required in the production process and prepare them;

[0078] Step 2: Install the two ends of the filter frame to be welded into the positioning grooves of the filter frame ends of the left top rod and the right top rod;

[0079] Step 3: Adjust the area to be welded in the workpiece to be in the same straight line with the handle by visual inspection to record the number of winding turns;

[0080] Step 4: Tighten the M6 ​​adjustment screw to push the right push rod to clamp and tighten the filter frame to be welded. The clamping force does not need to be too large.

[0081] Step 5: Pass the filter sheet with qualified size through the guide channel under the pressure plate fixed on the base and cover it on the filter frame;

[0082] Step 6: Weld the filter screen to the filter screen frame according to the welding process plan;

[0083] Step 7: Turn the hand wheel twice to wind the filter on the frame. The gap between the two layers of filter should be small. Use soldering to complete the secondary welding of the filter. Use scissors to cut off the excess filter along the weld.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0085] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An auxiliary device for soldering a filter element, the filter element comprising a filter screen frame (4) and a filter screen sheet wound and welded on the outer peripheral side of the filter screen frame (4), characterized in that: include: A mounting frame (1), the mounting frame (1) comprising a base plate (11) and a support body (12) fixed on the base plate (11); A filter mesh guide plate (2), the filter mesh guide plate (2) being arranged parallel to the plate surface of the bottom plate (11), and a guide channel (23) for movably passing through and guiding the filter mesh to be welded is defined between the two opposing plate surfaces; A clamping and rotating mechanism (3); the clamping and rotating mechanism (3) comprises a clamping portion (31) for clamping a filter screen frame (4) and a rotation driving portion (32) for driving the clamping portion (31) to rotate so as to wind the filter screen onto the filter screen frame (4); the clamping portion (31) is rotationally mounted on the support body (12) and corresponds to a side of the filter screen guide plate (2) away from the bottom plate (11); a rotation driving end of the rotation driving portion (32) is transmission-connected to the clamping portion (31) to drive it to rotate.

2. The auxiliary device for filter element soldering according to claim 1, characterized in that: The support body (12) comprises a support plate 1 (121) and a support plate 2 (122); the support plate 1 (121) and the support plate 2 (122) are arranged opposite to each other and are both vertically fixed to the upper end of the base plate (11); the filter plate guide plate (2) is mounted on the upper end of the base plate (11) and is located between the support plate 1 (121) and the support plate 2 (122); a mounting through hole 1 (1211) is provided on the surface of the support plate 1 (121) corresponding to the upper side of the filter plate guide plate (2); a mounting through hole 2 (1221) is provided on the surface of the support plate 2 (122) corresponding to the mounting through hole 1 (1211); The clamping portion (31) comprises a left top rod (311), a right top rod (312) and an adjusting screw (313); one end of the left top rod (311) is rotatably mounted in the first mounting through hole (1211), and the other end is located between the first support plate (121) and the second support plate (122) to form a first clamping end; one end of the right top rod (312) is movably inserted into the second mounting through hole (1221), and the other end is located between the first support plate (121) and the second support plate (122) to form a second clamping end; a filter frame clamping area (314) is defined between the first clamping end and the second clamping end; One end of the adjusting screw (313) is threadedly connected to the second mounting through hole (1221) and corresponds to an end of the right top rod (312) away from the left top rod (311), and the adjusting screw (313) can abut against and drive the right top rod (312) to move closer to the left top rod (311) to adjust the clamping force between the clamping end 1 and the clamping end 2; The rotary drive end of the rotary drive portion (32) is transmission-connected to the left push rod (311) to drive the left push rod (311) to rotate.

3. The auxiliary device for filter element soldering according to claim 2, characterized in that: The side walls opposite to the first clamping end and the second clamping end are both provided with filter screen frame end positioning grooves (315).

4. The auxiliary device for filter element soldering according to claim 3, characterized in that: The rotary drive unit (32) comprises a rotary hand wheel (321); the rotary hand wheel (321) is located on the side of the first support plate (121) away from the second support plate (122) and is fixed to one end of the left top rod (311).

5. The auxiliary device for filter element soldering according to claim 4, characterized in that: The rotary drive unit (32) further comprises a rotary handle (322); the rotary handle (322) is mounted on the circumference of the rotary hand wheel (321).

6. The auxiliary device for filter element soldering according to claim 5, characterized in that: A threaded hole (3211) is provided in the middle of the wheel surface of the rotating hand wheel (321), and a threaded hole (3212) is provided on the circumferential side of the wheel surface; one end of the left top rod (311) has an external thread (3111) adapted to the threaded hole (3211), and one end of the left top rod (311) passes through the mounting through hole (1211) and is threadedly connected and fixed in the threaded hole (3211) of the rotating hand wheel (321); One end of the rotating handle (322) has an external thread 2 (3221) adapted to the threaded hole 2 (3212), and the rotating handle (322) is threadedly connected and fixed in the threaded hole 1 (3211) of the rotating hand wheel (321).

7. An auxiliary device for filter element soldering according to claim 6, characterized in that: The thread pair formed by the external thread 1 (3111) and the threaded hole 1 (3211) is connected by a reverse thread.

8. The auxiliary device for filter element soldering according to claim 1, characterized in that: The filter plate guide plate (2) comprises a pressing plate (21) and two connecting limit plates (22); the two connecting limit plates (22) are both located below the pressing plate (21) and are symmetrically fixed at both ends of the pressing plate (21); the pressing plate (21) is arranged parallel to the plate surface of the bottom plate (11), and the two connecting limit plates (22) are both fixed parallel to the plate surface of the bottom plate (11); the guiding channel (23) is jointly defined between the pressing plate (21) and the bottom plate (11) and between the two connecting limit plates (22); The plate surface of the pressing plate (21) close to the bottom plate (11) is a pressing flat surface (211) that can slide against the filter mesh to be welded; the opposite side ends of the two connecting limiting plates (22) are both limiting ends (222) that can abut against and limit the filter mesh to be welded.

9. The auxiliary device for filter element soldering according to claim 8, characterized in that: The filter plate guide plate (2) further comprises a fixing screw (24); through holes (221) are provided on the plate surfaces of the two connection limit plates (22); threaded holes (111) are provided on the plate surface of the base plate (11) at locations corresponding to the two through holes (221); the fixing screw (24) movably passes through the through holes (221) and is threadedly connected in the threaded holes (111) to fix the two connection limit plates (22) on the plate surface of the base plate (11).

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