Double-sided one-time welding device suitable for diaphragm filter plate

Abstract

The utility model provides a double-face one-time welding device suitable for a diaphragm filter plate. The double-face one-time welding device comprises a main machine, a lining plate positioning frame, an upper heating mechanism and a lower heating mechanism. The main machine comprises a main body frame, an upper adsorption mechanism fixed to the main body frame and a lower adsorption mechanism installed on the main body frame in an up-down moving mode. The lining plate positioning frame can move back and forth and can move up and down; the upper heating mechanism and the lower heating mechanism can move back and forth and can move up and down, and each of the upper heating mechanism and the lower heating mechanism comprises an upper heating plate and a lower heating plate which are arranged up and down, an upper heat conducting plate fixedly arranged on the upper surface of the upper heating plate, and a lower heat conducting plate fixedly arranged on the lower surface of the lower heating plate; and the upper heat-conducting plate and the lower heat-conducting plate correspond to the welding part of the lining plate and the diaphragm piece. According to the application, secondary heating of the lining plate, secondary fusion welding and turnover of the lining plate are omitted, uneven heating of a product and damage to the welding strength are avoided, the welding strength is effectively improved, and particularly, the fusion welding forming efficiency of the diaphragm filter plate is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production and manufacturing of diaphragm filter plates, in particular to a double-sided one-time welding device suitable for diaphragm filter plates. Background Art

[0002] A membrane filter plate is one of the most commonly used filter plates in a filter press. Typically, a membrane filter plate consists of a liner, a diaphragm fixed to the front and rear sides of the liner, a sealed chamber formed between the liner and the diaphragm, feed and liquid outlet holes that run through the front and back, a filter chamber formed on the outside of the diaphragm, and a filter cloth covering the filter chamber. The working principle of a membrane filter plate is as follows: water-containing material enters the filter chamber through the feed hole. Water in the material and particles smaller than the pore size of the filter cloth pass through the filter cloth and are discharged through the liquid outlet hole. Particles larger than the pore size of the filter cloth are retained in the filter chamber and fill it completely. A pressing medium is introduced into the sealed chamber between the liner and the diaphragm, inflating the diaphragm and thereby compressing the filter cake in the filter chamber, further reducing its water content.

[0003] Currently in the industry, the diaphragm is a polypropylene diaphragm, and the diaphragm is fixed to the liner by welding. Specifically, the front of the liner faces upward, and a piece of polypropylene diaphragm and the front of the liner are heated, and then the two are glued together to complete the first welding; then, the liner is turned over so that the back of the liner faces upward, and another piece of polypropylene diaphragm and the back of the liner are heated, and then the two are glued together to complete the second welding. Therefore, when processing and manufacturing polypropylene diaphragm filter plates, the existing technology is to weld and form two pieces of polypropylene diaphragms in two steps to the front and back of the liner respectively, and the intermediate product needs to be turned over after the first welding. This existing secondary welding process has the following defects:

[0004] 1. When turning over the intermediate product after the first welding, it is very easy to damage the welding strength of the first welding;

[0005] 2. The two welding processes will inevitably heat the lining twice, which will easily cause the lining to deform due to uneven heating;

[0006] 3. The production efficiency is low due to the two-step welding process. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a double-sided one-time welding device suitable for diaphragm filter plates, which can achieve one-time welding of diaphragms on both sides of the liner, avoiding uneven heating of the product and damage to the welding strength.

[0008] To achieve the above-mentioned purpose, the present invention provides a double-sided one-time welding device suitable for a diaphragm filter plate, the double-sided one-time welding device comprising:

[0009] Main unit: The main unit includes a main frame, an upper adsorption mechanism fixed to the main frame, and a lower adsorption mechanism mounted on the main frame so as to be movable up and down. The upper adsorption mechanism and the lower adsorption mechanism are arranged vertically opposite to each other and are both used to adsorb and fix the diaphragm;

[0010] Liner plate positioning frame: The liner plate positioning frame can move forward and backward and can move up and down. The liner plate positioning frame is used to carry the liner and can move between the upper adsorption mechanism and the lower adsorption mechanism; and,

[0011] Upper heating mechanism and lower heating mechanism: Both the upper heating mechanism and the lower heating mechanism can move forward and backward and can move up and down. The upper heating mechanism can move between the upper adsorption mechanism and the liner positioning frame, and the lower heating mechanism can move between the liner positioning frame and the lower adsorption mechanism. Both the upper heating mechanism and the lower heating mechanism include an upper heating plate and a lower heating plate arranged up and down, an upper heat conducting plate fixed on the upper surface of the upper heating plate, and a lower heat conducting plate fixed on the lower surface of the lower heating plate. Both the upper heat conducting plate and the lower heat conducting plate correspond to the welding parts of the liner and the diaphragm.

[0012] Furthermore, the upper heating mechanism and the lower heating mechanism also include a heat insulation plate fixed between the upper heating plate and the lower heating plate, and the heat insulation plate separates the upper heating plate and the lower heating plate.

[0013] Furthermore, an anti-sticking layer is connected to the upper surface of the upper heat conducting plate and the lower surface of the lower heat conducting plate.

[0014] Furthermore, the upper heating mechanism and the lower heating mechanism also include an upper insulation layer fixed on the upper surface of the upper heating plate, and a lower insulation layer fixed on the lower surface of the lower heating plate. The upper insulation layer and the lower insulation layer both correspond to the non-welded parts of the lining plate and the diaphragm.

[0015] Furthermore, the double-sided one-time welding device also includes a vacuum system, the upper adsorption mechanism and the lower adsorption mechanism are both vacuum suction cups, and the vacuum system is connected to the vacuum suction cups.

[0016] Furthermore, the lining plate positioning frame includes a frame body and ear support parts fixed at the four corners of the inner periphery of the frame body, and lining plate ears are fixed at the four corners of the outer periphery of the lining plate, and the lining plate ears can be placed on the ear support parts.

[0017] Furthermore, the double-sided one-time welding device also includes a hydraulic system and a driving hydraulic cylinder, the main machine also includes a fixed pad and a lifting pad arranged opposite each other up and down, the fixed pad is fixed to the main frame, and the lifting pad can be installed on the main frame so as to move up and down, the hydraulic system is connected to the driving hydraulic cylinder, the upper end of the piston rod of the driving hydraulic cylinder is connected to the lifting pad, the upper adsorption mechanism is fixed to the bottom of the fixed pad, and the lower adsorption mechanism is fixed to the top of the lifting pad.

[0018] Furthermore, the double-sided one-time welding device further includes an upper guide rail, a middle guide rail and a lower guide rail extending forward and backward, and the upper guide rail, the middle guide rail and the lower guide rail are distributed in sequence from top to bottom;

[0019] The left and right sides of the upper heating mechanism are fixed with first support arms, and the first support arms are supported on the upper guide rail in a manner that can move forward and backward and can be separated from the upper guide rail upward;

[0020] A second support arm is fixedly provided on both the left and right sides of the lining plate positioning frame. The second support arm is supported on the middle guide rail in a manner that it can move forward and backward and can be separated from the middle guide rail upward.

[0021] A third supporting rotary arm is fixedly provided on both the left and right sides of the lower heating mechanism. The third supporting rotary arm is supported on the lower guide rail in a manner that it can move forward and backward and can be separated from the lower guide rail upward.

[0022] Furthermore, the double-sided one-time welding device further includes a first welding contour column and a first melting contour column both fixed on the lower surface of the fixed pad, a second melting contour column fixed in the first support rotary arm, a third melting contour column fixed on the liner positioning frame, a fourth melting contour column fixed in the third support rotary arm, and a second welding contour column and a fifth melting contour column both fixed on the upper surface of the lifting pad;

[0023] When the upper heating mechanism and the lower heating mechanism are both moved into the main unit and the main unit is closed, the first melting contour column, the second melting contour column, the third melting contour column, the fourth melting contour column and the fifth melting contour column abut in sequence from top to bottom;

[0024] When the upper heating mechanism and the lower heating mechanism are both removed from the main unit and the main unit is closed, the first welding contour column and the second welding contour column abut against each other.

[0025] As described above, the double-sided one-time welding device applicable to the diaphragm filter plate involved in the present invention has the following beneficial effects:

[0026] The double-sided single-shot welding device involved in the utility model can simultaneously heat the welding parts of the upper diaphragm, liner, and lower diaphragm, and after heating, can simultaneously maintain pressure and bond the upper diaphragm, liner, and lower diaphragm together, achieving a single-shot melt welding fixation of the upper diaphragm, liner, and lower diaphragm. This application eliminates the need for secondary heating of the liner, secondary melt welding, and flipping of the liner, thereby avoiding uneven heating of the product and damage to the weld strength, effectively improving the weld strength and structural strength of the product, and in particular effectively improving the melt welding forming efficiency of the diaphragm filter plate, doubling production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1a and Figure 1b They are respectively a top view and a side view of the liner in this application.

[0028] Figure 2a and Figure 2b They are respectively a top view and a side view of the diaphragm in this application.

[0029] Figure 3 This is the main view of the double-sided one-time welding device in this application.

[0030] Figure 4 and Figure 5 This is a side view of the double-sided one-time welding device in this application. Figure 4 The liner positioning frame, upper heating mechanism and lower heating mechanism are all inside the main unit. Figure 5 The liner positioning frame, upper heating mechanism and lower heating mechanism are all outside the main machine.

[0031] Figure 6 This is the main view of the upper heating mechanism and the lower heating mechanism in this application.

[0032] Figure 7 This is a top view of the liner positioning frame in this application.

[0033] Figures 8a to 8i This is a schematic diagram of the double-sided one-time welding process in this application.

[0034] Figure 9 for Figure 8a Top view of the center liner and liner positioning frame.

[0035] Figure 10 for Figure 8i Top view of the welded product blank and liner positioning frame.

[0036] Component number description

[0037] 101 Liner

[0038] 102 Upper diaphragm

[0039] 103 lower diaphragm

[0040] 104 Liner hanging ear

[0041] 105 Plate feed hole

[0042] 106 plate outlet

[0043] 107 Diaphragm feed hole

[0044] 108 diaphragm liquid outlet

[0045] 10 Host

[0046] 20 Main frame

[0047] 30 Upper adsorption mechanism

[0048] 40 Lower adsorption mechanism

[0049] 50 Liner positioning frame

[0050] 51 frame body

[0051] 52 Ear support

[0052] 53 Second support arm

[0053] 60 Upper heating mechanism

[0054] 61 First support arm

[0055] 70 lower heating mechanism

[0056] 71 Third support arm

[0057] 81 Upper heating plate

[0058] 82 Lower heating plate

[0059] 83 Upper heat conduction plate

[0060] 84 lower heat conducting plate

[0061] 85 insulation board

[0062] 86 anti-stick layer

[0063] 87 Upper insulation layer

[0064] 88 Lower insulation layer

[0065] 90 Vacuum system

[0066] 110 Hydraulic System

[0067] 120 driving hydraulic cylinder

[0068] 130 fixed pad

[0069] 140 lifting pad

[0070] 151 Upper guide rail

[0071] 152 middle guide rail

[0072] 153 lower rail

[0073] 161 First Welded Contour Column

[0074] 162 Second welding height column

[0075] 171 First Melting Contour Column

[0076] 172 Second Melting Contour Column

[0077] 173 Third Melting Contour Column

[0078] 174 Fourth Melting Contour Column

[0079] 175 Fifth Melting Contour Column

[0080] 180 Welding product blanks

[0081] 190 sealing ring DETAILED DESCRIPTION

[0082] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0083] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0084] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0085] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0086] The present invention provides a double-sided one-time welding device suitable for a diaphragm filter plate, hereinafter referred to as a double-sided one-time welding device, which is used to melt and weld the upper and lower diaphragm sheets to the upper and lower surfaces of the liner 101 respectively. For the sake of convenience, the diaphragm sheet fixed on the upper surface of the liner 101 is defined as the upper diaphragm sheet 102, and the diaphragm sheet fixed on the lower surface of the liner 101 is defined as the lower diaphragm sheet 103. Figure 1a and Figure 1b As shown, a plate feed hole 105 is provided in the middle of the lining plate 101 and is passed through vertically along the thickness direction, and plate liquid outlet holes 106 are provided in the four corners of the lining plate 101 and are passed through vertically along the thickness direction. Figure 2a and Figure 2b As shown, a diaphragm feed hole 107 is provided in the middle of the upper diaphragm 102 and the lower diaphragm 103, which runs through the diaphragm up and down along the thickness direction, and a diaphragm liquid outlet hole 108 is provided at the four corners of the upper diaphragm 102 and the lower diaphragm 103, which runs through the diaphragm up and down along the thickness direction.

[0087] like Figures 3 to 5 As shown, the double-sided one-time welding device of the present invention includes a main unit 10, a liner positioning frame 50, an upper heating mechanism 60, and a lower heating mechanism 70. The main unit 10 includes a main frame 20, an upper adsorption mechanism 30 fixed to the main frame 20, and a lower adsorption mechanism 40 mounted on the main frame 20 so as to be movable up and down. The upper adsorption mechanism 30 and the lower adsorption mechanism 40 are arranged vertically opposite each other. The upper adsorption mechanism 30 is used to adsorb and fix the upper diaphragm sheet 102, and the lower adsorption mechanism 40 is used to adsorb and fix the lower diaphragm sheet 103.

[0088] like Figures 3 to 5 As shown, the lining plate positioning frame 50 can move forward and backward and can move up and down. The lining plate positioning frame 50 can be moved out of the main body 10 or moved into the main body 10 by moving the lining plate positioning frame 50 forward and backward. When the lining plate positioning frame 50 is moved into the main body 10, the lining plate positioning frame 50 is placed between the upper adsorption mechanism 30 and the lower adsorption mechanism 40; Figure 7 and Figure 9As shown, the lining plate positioning frame 50 is used to support the lining plate 101.

[0089] like Figures 3 to 5 As shown, the upper heating mechanism 60 and the lower heating mechanism 70 can move forward and backward and can move up and down. By moving the upper heating mechanism 60 and the lower heating mechanism 70 forward and backward, the upper heating mechanism 60 and the lower heating mechanism 70 can be moved out of the main unit 10 or moved into the main unit 10. When the upper heating mechanism 60 is moved into the main unit 10, as shown in FIG. Figure 3 and Figure 4 As shown, the upper heating mechanism 60 is placed between the upper adsorption mechanism 30 and the liner positioning frame 50. When the lower heating mechanism 70 is moved into the main unit 10, as shown in FIG. Figure 3 and Figure 4 As shown, the lower heating mechanism 70 is placed between the liner positioning frame 50 and the lower adsorption mechanism 40. The upper heating mechanism 60 and the lower heating mechanism 70 have the same structure; Figure 6 As shown, both the upper heating mechanism 60 and the lower heating mechanism 70 include an upper heating plate 81 and a lower heating plate 82 arranged in an upper and lower arrangement, an upper heat conducting plate 83 fixed on the upper surface of the upper heating plate 81, and a lower heat conducting plate 84 fixed on the lower surface of the lower heating plate 82. The upper heat conducting plate 83 and the lower heat conducting plate 84 correspond to the welding positions of the lining plate 101 and the diaphragm. In this embodiment, the upper diaphragm 102 and the upper surface of the lining plate 101, as well as the lower diaphragm 103 and the lower surface of the lining plate 101 are welded and fixed at the outer edge of the diaphragm and the outer edge of the diaphragm feed hole 107. Then, the welding positions of the upper diaphragm 102 and the lower diaphragm 103 are the outer circle of the diaphragm feed hole 107 and the outer edge of the diaphragm, and the welding positions of the lining plate 101 are the outer circle of the plate feed hole 105 and the outer edge of the lining plate 101.

[0090] The double-sided one-time welding process using the double-sided one-time welding device comprises the following steps in sequence:

[0091] The first step, such as Figure 8a As shown, the main unit 10 is opened, the lower adsorption mechanism 40 moves downward away from the upper adsorption mechanism 30, and the upper heating mechanism 60 and the lower heating mechanism 70 are both moved backward out of the main unit 10 and moved backward to the outside of the main unit 10; the lower diaphragm 103 is placed on the lower adsorption mechanism 40; the liner positioning frame 50 is moved forward out of the main unit 10, and the liner 101 is placed in the liner positioning frame 50, as shown in FIG. Figure 9 As shown; thereafter, the upper diaphragm sheet 102 is placed on the liner 101.

[0092] Step 2: Figure 8bAs shown, the liner positioning frame 50 is moved backward into the main unit 10, and the liner positioning frame 50 moves between the upper adsorption mechanism 30 and the lower adsorption mechanism 40, and the upper adsorption mechanism 30, the upper diaphragm 102, the liner 101 on the liner positioning frame 50, the lower diaphragm 103 and the lower adsorption mechanism 40 are arranged in sequence from top to bottom.

[0093] Step 3: Close the main unit 10, and move the lower adsorption mechanism 40 and the liner positioning frame 50 upwards. Figure 8c As shown, until the lower adsorption mechanism 40, the lower diaphragm 103, the lining plate 101, the upper diaphragm 102 and the upper adsorption mechanism 30 are pressed together from bottom to top; then, the upper adsorption mechanism 30 and the lower adsorption mechanism 40 are opened, and the upper diaphragm 102 is adsorbed and fixed to the upper adsorption mechanism 30, and the lower diaphragm 103 is adsorbed and fixed to the lower adsorption mechanism 40.

[0094] Step 4: Open the main unit 10, and move the lower adsorption mechanism 40 and the liner positioning frame 50 downwards; then, the upper heating mechanism 60 and the lower heating mechanism 70 move forwards and move into the main unit 10, as shown in FIG. Figure 8d As shown, the upper heating mechanism 60 moves between the upper adsorption mechanism 30 and the liner positioning frame 50, and the lower heating mechanism 70 moves between the liner positioning frame 50 and the lower adsorption mechanism 40. The upper side and the lower side of the upper heating mechanism 60 are the upper diaphragm sheet 102 and the liner 101 respectively, and the upper side and the lower side of the lower heating mechanism 70 are the liner 101 and the lower diaphragm sheet 103 respectively.

[0095] Step 5: Close the main unit 10, and move the lower adsorption mechanism 40, the lower heating mechanism 70, the liner positioning frame 50 and the upper heating mechanism 60 upwards. Figure 8e As shown, the lower adsorption mechanism 40, the lower diaphragm 103, the lower heating mechanism 70, the lining plate 101, the upper heating mechanism 60, the upper diaphragm 102, and the upper adsorption mechanism 30 are sequentially pressed together. Thus, the upper heat conducting plate 83 and the lower heat conducting plate 84 of the lower heating mechanism 70 respectively press against the welded portion on the lower surface of the lining plate 101 and the welded portion on the lower diaphragm 103, and the upper heat conducting plate 83 and the lower heat conducting plate 84 of the upper heating mechanism 60 respectively press against the welded portion on the upper diaphragm 102 and the welded portion on the upper surface of the lining plate 101. That is: the upper heat conducting plate 83 of the upper heating mechanism 60 abuts the outer edge of the upper diaphragm 102 and the outer circle of its diaphragm feed hole 107; the lower heat conducting plate 84 of the upper heating mechanism 60 abuts the outer edge of the upper surface of the lining plate 101 and the outer circle of its plate feed hole 105; the upper heat conducting plate 83 of the lower heating mechanism 70 abuts the outer edge of the lower surface of the lining plate 101 and the outer circle of its plate feed hole 105; the lower heat conducting plate 84 of the lower heating mechanism 70 abuts the outer edge of the lower surface of the lining plate 101 and the outer circle of its plate feed hole 105.

[0096] Step 6: Turn on the upper heating mechanism 60 and the lower heating mechanism 70. The upper heating plates 81 and 82 in the upper heating mechanism 60 and the lower heating mechanism 70 both generate heat at the set temperature. The upper heating mechanism 60 simultaneously heats the welded portion of the upper diaphragm 102 and the welded portion of the upper surface of the liner 101 via its upper heat conducting plate 83 and the lower heat conducting plate 84. Simultaneously, the lower heating mechanism 70 simultaneously heats the welded portion of the lower surface of the liner 101 and the welded portion of the lower diaphragm 103 via its upper heat conducting plate 83 and the lower heat conducting plate 84. In this way, the upper heating mechanism 60 and the lower heating mechanism 70 simultaneously heat the welded portion of the upper diaphragm 102, the welded portion of the upper surface of the liner 101, the welded portion of the lower surface of the liner 101, and the welded portion of the lower diaphragm 103 at the set temperature, pressure, and time. After the set heating time is completed, the upper heating mechanism 60 and the lower heating mechanism 70 are turned off.

[0097] Step 7: Open the main unit 10, and move the lower adsorption mechanism 40, the lower heating mechanism 70, the liner positioning frame 50 and the upper heating mechanism 60 downwards. Figure 8f Afterwards, the upper heating mechanism 60 and the lower heating mechanism 70 are moved backward from the host 10 and are moved out to the outside of the host 10.

[0098] Step 8: Close the main unit 10 and maintain the pressure for a set time. The lower adsorption mechanism 40 and the liner positioning frame 50 move upwards. Figure 8g As shown, until the lower adsorption mechanism 40, the lower diaphragm 103, the lining plate 101, the upper diaphragm 102 and the upper adsorption mechanism 30 are pressed together from bottom to top, the heated parts of the lower surface of the lower diaphragm 103 and the lining plate 101 are turned over and melted and welded to fix, and the heated parts of the upper surface of the upper diaphragm 102 and the lining plate 101 are turned over and melted and welded to fix, a welded product blank 180 is obtained.

[0099] Step 9: Close the upper adsorption mechanism 30 and the lower adsorption mechanism 40, and the upper adsorption mechanism 30 releases the adsorption fixation of the upper diaphragm 102, and the lower adsorption mechanism 40 releases the adsorption fixation of the lower diaphragm 103, open the main unit 10, and the lower adsorption mechanism 40 and the liner positioning frame 50 move downward, as shown in FIG. Figure 8h As shown, the welding product blank 180 is retained in the liner positioning frame 50, as shown in FIG. Figure 10 Afterwards, the liner positioning frame 50 is moved forward from the main machine 10, as shown. Figure 8i As shown, the welding product blank 180 in the liner positioning frame 50 is moved out.

[0100] In summary, the double-sided one-time welding device involved in the present invention can heat the welding parts of the upper diaphragm sheet 102, the liner 101 and the lower diaphragm sheet 103 at the same time, and after heating, the upper diaphragm sheet 102, the liner 101 and the lower diaphragm sheet 103 can be simultaneously pressure-bonded together to achieve one-time melting welding and fixed molding of the upper diaphragm sheet 102, the liner 101 and the lower diaphragm sheet 103. The present application realizes double-sided one-time welding, eliminating the need for secondary heating of the liner 101, secondary melting welding and turning over of the liner 101, thereby avoiding uneven heating of the product and damage to the welding strength, and is conducive to symmetrical heating, uniform welding overflow, and the diaphragm filter plate after molding is not easy to deform, is flat and has little processing allowance, effectively improving the welding strength and structural strength of the product, especially effectively improving the melting welding molding efficiency of the diaphragm filter plate, and doubling the production efficiency.

[0101] Furthermore, the preferred structures of the upper heating mechanism 60 and the lower heating mechanism 70 are as follows: Figure 6 As shown, the upper heating mechanism 60 and the lower heating mechanism 70 also include a heat insulation plate 85 fixed between the upper heating plate 81 and the lower heating plate 82, and the heat insulation plate 85 separates the upper heating plate 81 and the lower heating plate 82. The upper heating mechanism 60 and the lower heating mechanism 70 both adopt a double-layer heating plate structure. The upper heating plate 81 and the lower heating plate 82 have different heating objects and the heating temperatures of the two are also different. The heat insulation plate 85 can accurately control the heating temperature of the upper heating plate 81 and the lower heating plate 82, and accurately adapt to the temperature control of the different melting points of the lining plate 101 and the diaphragm. Preferably, the upper surface of the upper heat conducting plate 83 and the lower surface of the lower heat conducting plate 84 are connected with an anti-sticking layer 86 to prevent the diaphragm plate and the lining plate 101 from sticking to the upper heat conducting plate 83 and the lower heat conducting plate 84 after heating. Furthermore, the anti-sticking layer 86 is detachably connected, facilitating regular replacement of the anti-sticking layer 86 and preventing molten material from adhering to the surfaces of the upper and lower heat conducting plates 83, 84, thereby ensuring the anti-sticking properties of the upper and lower heating mechanisms 60, 70. Furthermore, the upper and lower heat conducting plates 83, 84 can be flexibly changed based on the size of the product's welding surface, accommodating the welding of membrane filter plates of varying sizes.

[0102] Furthermore, there are two welding locations of the lining plate 101 and the diaphragm, so the upper heating plate 81 has two inner and outer locations, and the lower heating plate 82 also has two inner and outer locations. Figure 6As shown, the upper heating mechanism 60 and the lower heating mechanism 70 also include an upper insulation layer 87 fixed on the upper surface of the upper heating plate 81, and a lower insulation layer 88 fixed on the lower surface of the lower heating plate 82. The upper insulation layer 87 and the lower insulation layer 88 both correspond to the non-welded parts of the lining plate 101 and the diaphragm. Therefore, there are two upper insulation layers 87, the inner upper insulation layer 87 is fixed on the inner circumference of the inner upper heating plate 81, and the outer upper insulation layer 87 is connected between the inner and outer upper heating plates 81; similarly, there are two lower insulation layers 88, the inner lower insulation layer 88 is fixed on the inner circumference of the inner lower heating plate 82, and the outer lower insulation layer 88 is connected between the inner and outer lower heating plates 82. By setting the upper insulation layer 87 and the lower insulation layer 88, heat can be prevented from being transferred to the non-welded parts of the lining plate 101 and the diaphragm, and the lining plate 101 and the diaphragm can be prevented from being bonded together at the non-welded parts, thereby improving the processing quality of the diaphragm filter plate.

[0103] Preferably, if Figure 7 As shown, the liner positioning frame 50 includes a frame body 51 and ear support portions 52 welded and fixed at four corners of the inner periphery of the frame body 51; Figure 1a and Figure 1b As shown, liner lugs 104 are welded and fixed at the four corners of the outer periphery of the liner 101. By placing the liner lugs 104 on the lug support portion 52, the liner 101 before welding is supported in the liner positioning frame 50, as shown in FIG. Figure 9 and the welded product blank 180 obtained after welding is supported in the liner positioning frame 50, as Figure 10 After the welding process is completed, the liner lugs 104 on the periphery of the welded product blank 180 are subsequently removed by machining. In this application, only the liner lugs 104 on the liner 101 are in contact with the liner positioning frame 50, and the main body of the liner 101 is exposed from the liner positioning frame 50. The liner positioning frame 50 does not interfere with the contact and fit between the liner 101 and the upper diaphragm 102 and the lower diaphragm 103.

[0104] Furthermore, if Figure 3 As shown, the double-sided one-time welding device further includes a vacuum system 90, and the upper adsorption mechanism 30 and the lower adsorption mechanism 40 are both vacuum suction cups, and the vacuum system 90 is connected to the vacuum suction cups. When the vacuum system 90 is closed, the vacuum suction cups have no adsorption characteristics, and the upper adsorption mechanism 30 and the lower adsorption mechanism 40 release the adsorption and fixation of the upper diaphragm sheet 102 and the lower diaphragm sheet 103 respectively; when the vacuum system 90 is opened, the vacuum suction cups have adsorption characteristics, and the upper adsorption mechanism 30 and the lower adsorption mechanism 40 adsorb and fix the upper diaphragm sheet 102 and the lower diaphragm sheet 103 respectively. Preferably, as Figure 3As shown, according to the structure of the diaphragm, peripheral limiting steps and several sealing rings 190 are arranged on the bottom surface of the vacuum suction cup constituting the upper adsorption mechanism 30 and the top surface of the vacuum suction cup constituting the lower adsorption mechanism 40 to improve the reliability of vacuum adsorption.

[0105] Furthermore, if Figure 3 As shown, the double-sided one-time welding device also includes a hydraulic system 110 and a driving hydraulic cylinder 120. The main machine 10 also includes a fixed pad 130 and a lifting pad 140 arranged vertically opposite each other. The fixed pad 130 is fixed to the main frame 20, and the lifting pad 140 is installed on the main frame 20 so as to be movable up and down. The hydraulic system 110 is connected to the driving hydraulic cylinder 120. The upper end of the piston rod of the driving hydraulic cylinder 120 is connected to the lifting pad 140. The upper adsorption mechanism 30 is fixed to the bottom of the fixed pad 130, and the lower adsorption mechanism 40 is fixed to the top of the lifting pad 140. The hydraulic system 110 drives the piston rod of the driving hydraulic cylinder 120 to rise and fall, drives the lifting pad 140 to move up and down, and also drives the lower adsorption mechanism 40 to move up and down, and accordingly causes the main machine 10 to maintain pressure and close or release pressure and open. In order to improve the stability of the lifting plate 140 and the lower adsorption mechanism 40 when moving up and down, a guide component acting on the lifting plate 140 can be configured to ensure the verticality of the lifting plate 140 when moving up and down.

[0106] Furthermore, if Figures 3 to 5As shown, the double-sided single-shot welding device also includes an upper guide rail 151, an intermediate guide rail 152, and a lower guide rail 153, all extending forward and backward. In the vertical direction, the upper guide rail 151, the intermediate guide rail 152, and the lower guide rail 153 are arranged sequentially from top to bottom; in the left and right directions, the upper guide rail 151, the intermediate guide rail 152, and the lower guide rail 153 are arranged sequentially from outside to inside. A first support arm 61 is fixedly provided on both sides of the upper heating mechanism 60, and the first support arm 61 is supported on the upper guide rail 151 so as to be movable forward and backward. A second support arm 53 is fixedly provided on both sides of the liner positioning frame 50, and the second support arm 53 is supported on the intermediate guide rail 152 so as to be movable forward and backward. A third support arm 71 is fixedly provided on both sides of the lower heating mechanism 70, and the third support arm 71 is supported on the lower guide rail 153 so as to be movable forward and backward. When the main engine 10 closes and drives the hydraulic cylinder 120 to move the lifting pad 140 and the lower adsorption mechanism 40 upward, the lower adsorption mechanism 40 first lifts the lower heating mechanism 70 upward, and the third support swing arm 71 is upwardly separated from the lower guide rail 153; then, the lower adsorption mechanism 40 drives the lower heating mechanism 70 to lift the liner positioning frame 50 upward, and the second support swing arm 53 is upwardly separated from the middle guide rail 152; then, the lower adsorption mechanism 40 and the lower heating mechanism 70 drive the liner positioning frame 50 to lift the upper heating mechanism 60 upward, and the first support swing arm 61 is upwardly separated from the upper guide rail 151. On the contrary, when the main engine 10 opens the driving hydraulic cylinder 120 to drive the lifting pad 140 and the lower adsorption mechanism 40 to move downward, under the action of gravity, the upper heating mechanism 60, the liner positioning frame 50 and the lower heating mechanism 70 move downward together with the lower adsorption mechanism 40. First, the first supporting rotary arm 61 is blocked by the upper guide rail 151, and the upper heating mechanism 60 stops moving downward; then the second supporting rotary arm 53 is blocked by the middle guide rail 152, and the liner positioning frame 50 stops moving downward; finally, the third supporting rotary arm 71 is blocked by the lower guide rail 153, and the lower heating mechanism 70 stops moving downward.

[0107] Furthermore, if Figures 3 to 5As shown, the double-sided one-time welding device also includes a first welding contour column 161 and a first melting contour column 171 both fixed on the lower surface of the fixed pad 130, a second melting contour column 172 fixed in the first support rotary arm 61, a third melting contour column 173 fixed on the frame body 51 of the liner positioning frame 50, a fourth melting contour column 174 fixed in the third support rotary arm 71, and a second welding contour column 162 and a fifth melting contour column both fixed on the upper surface of the lifting pad 140. Column 175, the first melting contour column 171, the second melting contour column 172, the third melting contour column 173, the fourth melting contour column 174, the fifth melting contour column 175, the first welding contour column 161 and the second welding contour column 162 all extend up and down, the first welding contour column 161 and the first melting contour column 171 are distributed at the four corners of the upper adsorption mechanism 30, and the second welding contour column 162 and the second melting contour column 172 are distributed at the four corners of the lower adsorption mechanism 40. In the fifth and sixth steps described above, when the lower adsorption mechanism 40, lower diaphragm 103, lower heating mechanism 70, liner 101, upper heating mechanism 60, upper diaphragm 102, and upper adsorption mechanism 30 are pressed together in sequence, the first melt contour pillars 171, second melt contour pillars 172, third melt contour pillars 173, fourth melt contour pillars 174, and fifth melt contour pillars 175 are sequentially abutted from top to bottom; thus, during the heating process, the amount of heating and melting can be reliably guaranteed. During the welding process, i.e., in the eighth step described above, when the lower adsorption mechanism 40, lower diaphragm 103, liner 101, upper diaphragm 102, and upper adsorption mechanism 30 are pressed together in sequence from bottom to top, the first welding contour pillars 161 and second welding contour pillars 162 are abutted, ensuring the welding capacity.

[0108] Preferably, the heights of the first, second, third, fourth, and fifth melting contour columns 171, 172, 173, 174, and 175 are adjustable to prevent over- or under-melting and reliably guarantee the melting volume. The heights of the first, second, and third welding contour columns 161, 162 are also adjustable to prevent excessive molten metal from being squeezed out during welding, which could result in welding failure.

[0109] Furthermore, the forward and backward movement of the lining plate positioning frame 50, the upper heating mechanism 60, and the lower heating mechanism 70 along the guide rails can be manually driven or can be equipped with an automatic movement mechanism. In this embodiment, the double-sided single-shot welding device also includes a first servo drive system, a second servo drive system, and a third servo drive system; the first servo drive system is connected to the lining plate positioning frame 50 for driving the lining plate positioning frame 50 to move forward and backward, and allows the lining plate positioning frame 50 to move up and down in the main machine 10; the second servo drive system is connected to the upper heating mechanism 60 for driving the upper heating mechanism 60 to move forward and backward, and allows the upper heating mechanism 60 to move up and down in the main machine 10; the third servo drive system is connected to the lower heating mechanism 70 for driving the lower heating mechanism 70 to move forward and backward, and allows the lower heating mechanism 70 to move up and down in the main machine 10. Preferably, an electrical box can be configured on the right side of the main machine 10 to control the operation of each mechanism.

[0110] Preferably, the surfaces of the upper guide rail 151, the middle guide rail 152 and the lower guide rail 153 are fixed with limit blocks and limit sensors, which respectively control the extreme movement positions of the liner positioning frame 50, the upper heating mechanism 60 and the lower heating mechanism 70 in the front-to-back direction.

[0111] In summary, the working process of the double-sided one-time welding device with the above structure includes the following steps.

[0112] 1. If Figure 8a As shown, the main machine 10 is opened, the driving hydraulic cylinder 120 is not lifted upward, and the upper heating mechanism 60 and the lower heating mechanism 70 are both moved backward to the rear of the main machine 10; the lower diaphragm 103 is manually placed on the lower adsorption mechanism 40, or the lower diaphragm 103 is automatically placed on the lower adsorption mechanism 40 by a robot; the liner positioning frame 50 is moved forward to the front of the main machine 10, the liner 101 is hoisted and placed into the liner positioning frame 50, and then the upper diaphragm 102 is placed on the liner 101.

[0113] 2. If Figure 8b As shown, the liner positioning frame 50 is moved backward into the main machine 10.

[0114] 3. Close the main unit 10 and drive the hydraulic cylinder 120 to lift the lower adsorption mechanism 40 upward. After the lower adsorption mechanism 40 contacts the liner positioning frame 50, the liner positioning frame 50 is lifted upward until the lower adsorption mechanism 40, the lower diaphragm 103, the liner 101, the upper diaphragm 102 and the upper adsorption mechanism 30 are pressed tightly from bottom to top. Figure 8c Afterwards, the vacuum system 90 is turned on, and the upper diaphragm sheet 102 is adsorbed and fixed to the upper adsorption mechanism 30 , and the lower diaphragm sheet 103 is adsorbed and fixed to the lower adsorption mechanism 40 .

[0115] 4. Open the main unit 10 and drive the hydraulic cylinder 120 to retract and reset. Then the lower adsorption mechanism 40 and the liner positioning frame 50 move down and reset themselves under the action of gravity. After that, the upper heating mechanism 60 and the lower heating mechanism 70 are moved forward into the main unit 10. Figure 8d As shown, the upper heating mechanism 60 moves between the upper adsorption mechanism 30 and the liner positioning frame 50 , and the lower heating mechanism 70 moves between the liner positioning frame 50 and the lower adsorption mechanism 40 .

[0116] 5. Close the main unit 10 and drive the hydraulic cylinder 120 to lift the lower adsorption mechanism 40 upward, which will in turn lift the lower heating mechanism 70, the liner positioning frame 50 and the upper heating mechanism 60 upward, until the lower adsorption mechanism 40, the lower diaphragm 103, the lower heating mechanism 70, the liner 101, the upper heating mechanism 60, the upper diaphragm 102 and the upper adsorption mechanism 30 are tightly pressed together. Figure 8e As shown, the upper heating mechanism 60 and the lower heating mechanism 70 are turned on to heat the welded areas of the upper diaphragm 102, the welded areas on the upper surface of the liner 101, the welded areas on the lower surface of the liner 101, and the welded areas of the lower diaphragm 103 simultaneously at the set temperature, pressure, and time. After the set heating time is completed, the upper heating mechanism 60 and the lower heating mechanism 70 are turned off, and the hydraulic system 110 is depressurized.

[0117] 6. Open the main machine 10 and drive the hydraulic cylinder 120 to retract and reset. The lower adsorption mechanism 40, the lower heating mechanism 70, the lining plate positioning frame 50 and the upper heating mechanism 60 are all moved downward. Figure 8f As shown, the lower heating mechanism 70 is separated from the lining plate 101 and the lower diaphragm 103, and the upper heating mechanism 60 is separated from the lining plate 101 and the upper diaphragm 102. Afterwards, the upper heating mechanism 60 and the lower heating mechanism 70 move back to the rear of the main machine 10. The signal is transmitted to the hydraulic system 110, which is activated to drive the hydraulic cylinder 120 to lift upward, immediately closing the main machine 10. The hydraulic system 110 maintains pressure for the set time, and the lower adsorption mechanism 40, the lower diaphragm 103, the lining plate 101, the upper diaphragm 102 and the upper adsorption mechanism 30 are pressed together from bottom to top, as shown in FIG. Figure 8g As shown, the heated portions of the lower surface of the lower diaphragm 103 and the liner 101 are slurried and welded together, and the heated portions of the upper diaphragm 102 and the upper surface of the liner 101 are slurried and welded together. The main machine 10 cools and sets under a set pressure and time, forming a uniform slurry around the weld surface, resulting in a welded product blank 180.

[0118] 7. After the pressure holding time reaches the set parameters, the vacuum system 90 is closed; then, the hydraulic system 110 is depressurized, the main machine 10 is opened, and the lower adsorption mechanism 40 and the liner positioning frame 50 are moved downward, as shown in FIG. Figure 8h As shown, the welded product blank 180 is naturally retained in the liner positioning frame 50, as shown in FIG. Figure 10 Afterwards, the liner positioning frame 50 is moved forward from the main unit 10 to the front side of the main unit 10, as shown. Figure 8i As shown, the welding product blank 180 in the liner positioning frame 50 is moved out by tooling, lifting equipment, etc. to enter the next welding cycle.

[0119] The above-mentioned double-sided one-time welding device has the following advantages:

[0120] 1. Double-sided, single-step heating and welding completes two diaphragm sheets, doubling production efficiency and effectively avoiding secondary heating of the liner 101. This effectively improves the product's weld and structural strength, particularly the efficiency of the melt welding and forming of the diaphragm filter plate, doubling production efficiency. Double-sided, single-step welding is particularly beneficial for symmetrical heating, uniform weld overflow, and reduces deformation of the formed diaphragm filter plate. The resulting diaphragm filter plate product has improved weld strength and flatness, resulting in a smooth, minimal machining allowance, reducing post-processing allowances and lowering costs. Furthermore, subsequent integration with automated loading and unloading mechanisms enables a fully automated welding process, effectively improving production efficiency and safety while ensuring product quality.

[0121] 2. The process is highly automated, improving operational safety.

[0122] 3. Both the upper heating mechanism 60 and the lower heating mechanism 70 utilize a double-layer heating plate structure, allowing different heating temperature ranges and times to be set for the diaphragm and liner 101, resulting in improved melting quality. The upper and lower insulation layers 87 and 88 on the upper and lower heating mechanisms 60 and 70 prevent excessive heating of the non-welded areas of the liner 101 and diaphragm, thereby improving the processing quality of the diaphragm filter plate.

[0123] 4. The lining plate 101 adopts a structure of four-corner lining plate hanging ears 104, replacing the 8 hanging ear structures on the previous diaphragm, which requires lower material costs and more accurate positioning.

[0124] 5. Move the vacuum suction cup downward to fix the diaphragm. Fix it quickly and ensure that the inner part of the diaphragm cavity is kept at a sufficient distance from the upper heating mechanism 60 and the lower heating mechanism 70 to prevent the upper heating mechanism 60 and the lower heating mechanism 70 from damaging the diaphragm.

[0125] Therefore, the utility model effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0126] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A double-sided one-time welding device suitable for a diaphragm filter plate, characterized by: The double-sided one-time welding device comprises: Main unit (10): The main unit (10) comprises a main frame (20), an upper adsorption mechanism (30) fixed to the main frame (20), and a lower adsorption mechanism (40) mounted on the main frame (20) so as to be movable up and down. The upper adsorption mechanism (30) and the lower adsorption mechanism (40) are arranged vertically opposite to each other and are both used for adsorbing and fixing the diaphragm. Liner plate positioning frame (50): the liner plate positioning frame (50) can be moved forward and backward and can be moved up and down, the liner plate positioning frame (50) is used to carry the liner plate (101) and can be moved between the upper adsorption mechanism (30) and the lower adsorption mechanism (40); and, upper heating mechanism (60) and lower heating mechanism (70): the upper heating mechanism (60) and the lower heating mechanism (70) can both be moved forward and backward and can be moved up and down, the upper heating mechanism (60) can be moved to the upper adsorption mechanism (30) and the liner plate positioning frame (50) The lower heating mechanism (70) can be moved between the lining plate positioning frame (50) and the lower adsorption mechanism (40), and the upper heating mechanism (60) and the lower heating mechanism (70) both include an upper heating plate (81) and a lower heating plate (82) arranged up and down, an upper heat conducting plate (83) fixed on the upper surface of the upper heating plate (81), and a lower heat conducting plate (84) fixed on the lower surface of the lower heating plate (82), and the upper heat conducting plate (83) and the lower heat conducting plate (84) both correspond to the welding parts of the lining plate (101) and the diaphragm.

2. The double-sided one-time welding device according to claim 1, characterized in that: The upper heating mechanism (60) and the lower heating mechanism (70) also include a heat insulation plate (85) fixed between the upper heating plate (81) and the lower heating plate (82), and the heat insulation plate (85) separates the upper heating plate (81) and the lower heating plate (82).

3. The double-sided one-time welding device according to claim 1, characterized in that: An anti-sticking layer (86) is connected to the upper surface of the upper heat conducting plate (83) and the lower surface of the lower heat conducting plate (84).

4. The double-sided one-time welding device according to claim 1, characterized in that: The upper heating mechanism (60) and the lower heating mechanism (70) also include an upper heat insulation layer (87) fixed on the upper surface of the upper heating plate (81), and a lower heat insulation layer (88) fixed on the lower surface of the lower heating plate (82), and the upper heat insulation layer (87) and the lower heat insulation layer (88) both correspond to the non-welded parts of the lining plate (101) and the diaphragm.

5. The double-sided one-time welding device according to claim 1, characterized in that: It also includes a vacuum system (90), the upper adsorption mechanism (30) and the lower adsorption mechanism (40) are both vacuum suction cups, and the vacuum system (90) is connected to the vacuum suction cups.

6. The double-sided one-time welding device according to claim 1, characterized in that: The lining plate positioning frame (50) comprises a frame body (51) and a lug support portion (52) fixedly arranged at four corners of the inner periphery of the frame body (51); lining plate lugs (104) are fixedly arranged at four corners of the outer periphery of the lining plate (101); and the lining plate lugs (104) can be placed on the lug support portion (52).

7. The double-sided one-time welding device according to claim 1, characterized in that: The invention also includes a hydraulic system (110) and a driving hydraulic cylinder (120). The main machine (10) also includes a fixed pad (130) and a lifting pad (140) arranged vertically opposite to each other. The fixed pad (130) is fixed to the main frame (20), and the lifting pad (140) is installed on the main frame (20) so as to be movable up and down. The hydraulic system (110) is connected to the driving hydraulic cylinder (120), and the upper end of the piston rod of the driving hydraulic cylinder (120) is connected to the lifting pad (140). The upper adsorption mechanism (30) is fixed to the bottom of the fixed pad (130), and the lower adsorption mechanism (40) is fixed to the top of the lifting pad (140).

8. The double-sided one-time welding device according to claim 7, characterized in that: It also includes an upper guide rail (151), a middle guide rail (152) and a lower guide rail (153) extending forward and backward, wherein the upper guide rail (151), the middle guide rail (152) and the lower guide rail (153) are distributed in sequence from top to bottom; The left and right sides of the upper heating mechanism (60) are both fixedly provided with first support arms (61), and the first support arms (61) are supported on the upper guide rail (151) in a manner that allows them to move forward and backward, and can be separated from the upper guide rail (151) upward. The left and right sides of the lining plate positioning frame (50) are both fixedly provided with second support arms (53), and the second support arms (53) are supported on the middle guide rail (152) in a manner that they can move forward and backward, and can be separated from the middle guide rail (152) upward. The left and right sides of the lower heating mechanism (70) are both fixedly provided with third support arms (71), and the third support arms (71) are supported on the lower guide rail (153) in a manner that allows them to move forward and backward, and can be separated from the lower guide rail (153) upward.

9. The double-sided one-time welding device according to claim 8, characterized in that: It also includes a first welded contour column (161) and a first molten contour column (171) both fixed on the lower surface of the fixed pad (130), a second molten contour column (172) fixed in the first support arm (61), a third molten contour column (173) fixed on the liner positioning frame (50), a fourth molten contour column (174) fixed in the third support arm (71), and a second welded contour column (162) and a fifth molten contour column (175) both fixed on the upper surface of the lifting pad (140); When the upper heating mechanism (60) and the lower heating mechanism (70) are both moved into the main unit (10) and the main unit (10) is closed, the first melting contour column (171), the second melting contour column (172), the third melting contour column (173), the fourth melting contour column (174) and the fifth melting contour column (175) are abutted in sequence from top to bottom; When the upper heating mechanism (60) and the lower heating mechanism (70) are both removed from the main machine (10) and the main machine (10) is closed, the first welding contour column (161) and the second welding contour column (162) abut against each other.

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