Welding equipment for PFA filter shell

Abstract

The utility model relates to the technical field of hot melting welding, and discloses a PFA filter shell welding device which comprises a rack, a shell clamping tool, a first end cover clamping tool, a second end cover clamping tool and a hot plate assembly, and the shell clamping tool is used for bearing and clamping a shell to be welded; the first end cover clamping tool is used for clamping a first end cover to be welded and driving the first end cover to be close to or away from the first end of the shell. The second end cover clamping tool is used for clamping a second end cover to be welded and driving the second end cover to be close to or away from the second end of the shell. The hot plate assembly is used for heating the end of the shell and the first end cover or the second end cover, and the hot plate assembly can be moved into and out of the space between the shell and the first end cover or the space between the shell and the second end cover. According to the PFA filter shell welding equipment, the cleanliness requirement of the welding environment is met, the welding precision is guaranteed, the hot plate assembly can be rapidly moved away after heating is completed, and welding and fixing of the shell, the first end cover and the second end cover are not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot melt welding technical field especially relates to a PFA filter shell welding equipment. BACKGROUND

[0002] PFA filter is made of high purity PFA shell and super strong chemical compatibility PFA perfluorinated filter core through high temperature hot melt technology welding, and the filter core is the "heart" of the filter, and the quality of the filter core determines the filtering capacity of the filter, so the high temperature hot melt welding technology used for sealing the shell and the filter core is particularly important.

[0003] The conventional hot melt welding equipment on the market at present all realize hot melt welding in a contact heating mode, but the PFA filter is mainly used for filtering strong acid and strong alkali corrosive fluid, and the cleanliness of the welding joint is very high, so the welding operation must be carried out in a dust-free workshop, and in order to ensure the sealing effect of the filter, high-precision welding control must be provided. SUMMARY

[0004] The utility model discloses a PFA filter shell welding equipment to solve the problem in the background art.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A PFA filter shell welding equipment is used for welding the first end of the shell body of the filter shell with the first end cover and welding the second end of the shell body of the filter shell with the second end cover, and the PFA filter shell welding equipment comprises a rack, a shell clamping tool, a first end cover clamping tool, a second end cover clamping tool and a hot plate assembly arranged on the rack, wherein:

[0007] The shell clamping tool is used for bearing and clamping the shell to be welded.

[0008] The first end cover clamping tool is coaxially arranged with the shell clamping tool, and the first end cover clamping tool is used for clamping the first end cover to be welded and driving the first end cover to approach or move away from the first end of the shell.

[0009] The second end cover clamping tool is coaxially arranged with the shell clamping tool, and the second end cover clamping tool is used for clamping the second end cover to be welded and driving the second end cover to approach or move away from the second end of the shell.

[0010] The first end cover clamping tool and the shell clamping tool and the second end cover clamping tool and the shell clamping tool are respectively provided with the hot plate assembly, the hot plate assembly is used for heating the end part of the shell and the first end cover or the second end cover, and the hot plate assembly can move into and move out of the space between the shell and the first end cover or the space between the shell and the second end cover.

[0011] As an alternative, the shell is clamped by the shell clamping tool in an axial vertical state, the shell clamping tool, the first end cover clamping tool and the second end cover clamping tool are vertically distributed, and the two hot plate assemblies can be horizontally translated.

[0012] As an alternative, two shell clamping tools are provided, and the two shell clamping tools are arranged side by side, and the first end cover clamping tool and the second end cover clamping tool are arranged above the corresponding shell clamping tools, thereby forming two side-by-side welding stations.

[0013] As an alternative, the rack is provided with a cover shell covering the shell clamping tool, the first end cover clamping tool, the second end cover clamping tool and the hot plate assembly, and the cover shell is provided with a feeding and discharging window corresponding to the two welding stations.

[0014] As an alternative, the shell clamping tool comprises a first clamping piece, a first moving seat and a first driving piece, wherein:

[0015] The first clamping piece is installed on the first moving seat, and the first clamping piece is used for fixing or releasing the shell;

[0016] The first driving piece is used for driving the first moving seat to ascend and descend, so that the end of the shell can approach or move away from the hot plate assembly.

[0017] As an alternative, the first end cover clamping tool and the second end cover clamping tool each comprise a second clamping piece, a second moving seat and a second driving piece, wherein:

[0018] The second clamping piece is installed on the second moving seat, and the second clamping piece is used for fixing or releasing the first end cover or the second end cover;

[0019] The second driving piece is used for driving the second moving seat to ascend and descend, so that the first end cover or the second end cover can approach or move away from the hot plate assembly and the end of the shell.

[0020] As an alternative, the hot plate assembly comprises a third moving seat and a third driving piece, wherein:

[0021] The third moving seat is provided with two rotating hot plates, one rotating hot plate performs non-contact far infrared heat radiation on the end of the shell, and the other rotating hot plate performs non-contact far infrared heat radiation on the first end cover or the second end cover;

[0022] The third driving piece is used for driving the third moving seat to horizontally move, so that the hot plate assembly can move out of the shell and the first end cover or the shell and the second end cover after heating is completed.

[0023] The beneficial effects of the utility model are as follows:

[0024] The PFA filter shell welding equipment has high automation degree, high control and operation precision and stable structure, meets the cleanliness requirement of the welding environment and guarantees welding precision, and in combination with the movable hot plate assembly, the hot plate assembly can be quickly removed after heating, does not affect the welding and fixing of the shell and the first end cover and the second end cover, and meets the welding forming requirement. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the PFA filter shell welding equipment provided by the embodiment of the utility model.

[0026] In the drawings:

[0027] 1, rack; 11, cover; 12, feeding and discharging window;

[0028] 2, shell clamping tool; 21, first clamping part;

[0029] 3, first end cover clamping tool; 31, second clamping part;

[0030] 4, second end cover clamping tool;

[0031] 5, hot plate assembly; 51, third moving seat; 52, rotary heating plate;

[0032] 100, shell; 200, first end cover; 300, second end cover. DETAILED DESCRIPTION

[0033] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all the structures.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0036] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0037] In addition, the terms "first", "second" and the like are only used for differentiation in description, and have no special meaning.

[0038] Please refer to Figure 1 As shown in the figure, the embodiment provides a PFA filter shell welding equipment for welding the first end of the shell body 100 of the filter shell with the first end cover 200, and welding the second end of the shell body 100 of the filter shell with the second end cover 300, which comprises a rack 1 and a shell clamping tool 2, a first end cover clamping tool 3, a second end cover clamping tool 4 and a hot plate assembly 5 arranged on the rack 1, wherein:

[0039] The shell clamping tool 2 is used for carrying and clamping the shell body 100 to be welded;

[0040] The first end cover clamping tool 3 is coaxially arranged with the shell clamping tool 2, and the first end cover clamping tool 3 is used for clamping the first end cover 200 to be welded and driving the first end cover 200 to approach or move away from the first end of the shell body 100;

[0041] The second end cover clamping tool 4 is coaxially arranged with the shell clamping tool 2, and the second end cover clamping tool 4 is used for clamping the second end cover 300 to be welded and driving the second end cover 300 to approach or move away from the second end of the shell body 100;

[0042] The first end cover clamping tool 3 and the shell clamping tool 2, the second end cover clamping tool 4 and the shell clamping tool 2 are respectively provided with a hot plate assembly 5, the hot plate assembly 5 is used for heating the end of the shell 100 and the first end cover 200 or the second end cover 300, and the hot plate assembly 5 can move into and out of the shell 100 and the first end cover 200 or the shell 100 and the second end cover 300.

[0043] Therefore, the PFA filter housing welding equipment has high automation degree, high control and operation precision, and stable structure, meets the cleanliness requirement of the welding environment, ensures the welding precision, and cooperates with the movable hot plate assembly 5, so that the shell 100, the first end cover 200 and the second end cover 300 can be quickly moved away after heating, does not affect the welding and fixing, and meets the welding forming requirement.

[0044] Preferably, the shell 100 is clamped by the shell clamping tool 2 in an axial vertical state, the shell clamping tool 2, the first end cover clamping tool 3 and the second end cover clamping tool 4 are distributed in a vertical direction, and the two hot plate assemblies 5 can translate along the horizontal direction, and the shell clamping tool 2, the first end cover clamping tool 3 and the second end cover clamping tool 4 can respectively ascend and descend along the vertical direction.

[0045] Therefore, the layout of the shell clamping tool 2, the first end cover clamping tool 3, the second end cover clamping tool 4 and the hot plate assembly 5 is reasonably designed, so that the whole equipment structure is compact, the shell clamping tool 2, the first end cover clamping tool 3, the second end cover clamping tool 4 and the hot plate assembly 5 accurately act, and the welding precision is improved.

[0046] Further, the shell clamping tool 2 is provided with two, the two shell clamping tools 2 are arranged side by side, the first end cover clamping tool 3 and the second end cover clamping tool 4 are respectively located above the corresponding shell clamping tool 2, so as to form two welding stations arranged side by side, and the shell 100 is conveniently transferred from one welding station to another welding station after one end welding is completed in one welding station, and whether manual material moving or automatic material moving is convenient to realize.

[0047] Optionally, the rack 1 is provided with a cover 11 in which the shell clamping tool 2, the first end cover clamping tool 3, the second end cover clamping tool 4 and the hot plate assembly 5 are covered, the cover 11 is provided with a feeding and discharging window 12 corresponding to the two welding stations, and the feeding and discharging window 12 is further provided with a lifting window for observation.

[0048] In addition, the rack 1 corresponding to the two welding stations can be used separately, or one side can perform the welding work of the first end cover 200 and the shell 100 of the shell, and the other side can perform the welding work of the second end cover 300 and the shell 100 of the shell, that is, the same equipment can meet the whole welding work.

[0049] Specifically, the shell clamping tool 2 comprises a first clamping piece 21, a first moving seat and a first driving piece, the first clamping piece 21 is installed on the first moving seat, and the first clamping piece 21 is used for fixing or releasing the shell 100; the first driving piece is used for driving the first moving seat to ascend and descend, so that the end of the shell 100 can be close to or away from the hot plate assembly 5.

[0050] Optionally, the first clamping piece 21 adopts a pneumatic clamping jaw to realize quick clamping of the shell 100; the first moving seat adopts a vertical guide rail to realize limiting and guiding; and the first driving piece adopts a servo electric cylinder to independently ascend and descend, so that the distance between the end of the shell 100 and the hot plate assembly 5 can be accurately controlled, the welding opening is uniformly heated, and the welding requirement is met.

[0051] Specifically, the first end cover clamping tool 3 and the second end cover clamping tool 4 each comprise a second clamping piece 31, a second moving seat and a second driving piece, the second clamping piece 31 is installed on the second moving seat, and the second clamping piece 31 is used for fixing or releasing the first end cover 200 or the second end cover 300; the second driving piece is used for driving the second moving seat to ascend and descend, so that the first end cover 200 or the second end cover 300 can be close to or away from the end of the hot plate assembly 5 and the shell 100.

[0052] Optionally, the second clamping piece 31 adopts a pneumatic clamping jaw to realize quick clamping of the first end cover 200 and the second end cover 300; the second moving seat adopts the same vertical guide rail as the first moving seat to realize limiting and guiding; and the second driving piece adopts a servo electric cylinder to independently ascend and descend, so that the distance between the first end cover 200 and the second end cover 300 and the hot plate assembly 5 can be accurately controlled, the welding opening is uniformly heated, the welding requirement is met, the fusion depth of the first end cover 200 and the shell 100 and the fusion depth of the second end cover 300 and the shell 100 can be accurately controlled, and the size requirement after the shell is welded is met.

[0053] Specifically, the hot plate assembly 5 comprises a third moving seat 51 and a third driving piece, two rotating heating plates 52 are arranged on the third moving seat 51, one rotating heating plate 52 performs non-contact far infrared heat radiation on the end of the shell 100, and the other rotating heating plate 52 performs non-contact far infrared heat radiation on the first end cover 200 or the second end cover 300; the third driving piece is used for driving the third moving seat 51 to move horizontally, so that the hot plate assembly 5 can move out of the space between the shell 100 and the first end cover 200 or the space between the shell 100 and the second end cover 300 after heating is completed.

[0054] Optionally, the third moving seat 51 adopts a horizontal guide rail to realize limiting and guiding; the third driving piece adopts a linear driver such as a motor screw and nut pair to meet the driving requirement of advancing and retreating; the rotating heating plate 52 adopts a non-contact far infrared heat radiation form to ensure that the welding opening is not polluted, and adopts a rotating heating mode to ensure that the welding opening is uniformly heated, and the two rotating heating plates 52 can be independently controlled in temperature to meet different welding temperature requirements.

[0055] Therefore, the two independently movable hot plate assemblies 5 serve as heat sources and are controlled by the third driving member to quickly switch in and out to reduce heat dissipation, and the first driving member and the second driving member are used to accurately control the distance from the shell 100 to the rotating heating plate 52, the distance from the first end cover 200 to the rotating heating plate 52, and the distance from the second end cover 300 to the rotating heating plate 52, so that the end of the shell 100, the first end cover 200 and the second end cover 300 are accurately controllable when heated, and the welding requirements are met.

[0056] In addition, based on the full-automatic control system, the operator only needs to select the welding process, and after clamping the shell 100, the first end cover 200 and the second end cover 300 of the filter shell, the full-automatic welding process can be realized without human intervention, and the welding efficiency is greatly improved.

[0057] Specific welding process:

[0058] 1) After the equipment is initialized, the shell 100 and the first end cover 200 and the second end cover 300 are respectively put into the two feeding and discharging windows 12;

[0059] 2) Press the start button, and the equipment starts to judge whether the temperature of the rotating heating plate 52 of the hot plate assembly 5 reaches the allowable welding temperature, and after reaching the set temperature, the third driving member drives the hot plate assembly 5 to insert between the shell 100 and the first end cover 200 and between the shell 100 and the second end cover 300;

[0060] 3) The first driving member and the second driving member correspondingly drive the shell 100 and the first end cover 200 and the second end cover 300 to approach the rotating heating plate 52 to the appropriate position, and the rotating heating plate 52 starts to rotate and heat;

[0061] 4) After heating to the preset time, the third driving member drives the hot plate assembly 5 to retreat, and the second driving member drives the first end cover 200 and the second end cover 300 to fold with the shell 100 respectively, and welding is performed;

[0062] 5) Start the cooling timing, and after the time, the shell clamping tool 2, the first end cover clamping tool 3 and the second end cover clamping tool 4 are opened, and the welded product is taken away.

[0063] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled persons in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model claim.

Claims

1. PFA filter housing welding apparatus for welding a first end of a shell (100) of a filter housing with a first end cap (200) and a second end of the shell (100) of the filter housing with a second end cap (300), characterized in that, The PFA filter shell welding equipment comprises a rack (1) and a shell clamping tool (2), a first end cover clamping tool (3), a second end cover clamping tool (4) and a hot plate assembly (5) arranged on the rack (1), wherein: The shell clamping tool (2) is used to carry and clamp the shell (100) to be welded. The first end cover clamping tool (3) is coaxially arranged with the shell clamping tool (2), and is used to clamp the first end cover (200) to be welded and drive the first end cover (200) to approach or move away from the first end of the shell (100). The second end cover clamping tool (4) is coaxially arranged with the shell clamping tool (2), and is used to clamp the second end cover (300) to be welded and drive the second end cover (300) to approach or move away from the second end of the shell (100). The first end cover clamping tool (3) and the second end cover clamping tool (4) are respectively provided between the shell clamping tool (2), and the hot plate assembly (5) is used to heat the end of the shell (100) and the first end cover (200) or the second end cover (300), and the hot plate assembly (5) can move into and out of the shell (100) and the first end cover (200) or the shell (100) and the second end cover (300).

2. The PFA filter housing welding apparatus according to claim 1, characterized by, The shell (100) is vertically arranged after being clamped by the shell clamping tool (2), the shell clamping tool (2), the first end cover clamping tool (3) and the second end cover clamping tool (4) are vertically arranged, and the two hot plate assemblies (5) can move horizontally.

3. The PFA filter housing welding apparatus of claim 2, wherein, The shell clamping tool (2) is provided with two shell clamping tools (2) arranged side by side, and the first end cover clamping tool (3) and the second end cover clamping tool (4) are arranged above one of the shell clamping tools (2), thereby forming two welding stations arranged side by side.

4. The PFA filter housing welding apparatus of claim 3, wherein, The rack (1) is provided with a cover (11) covering the shell clamping tool (2), the first end cover clamping tool (3), the second end cover clamping tool (4) and the hot plate assembly (5), and the cover (11) is provided with a feeding and discharging window (12) corresponding to the two welding stations.

5. The PFA filter housing welding apparatus of claim 2, wherein, The shell clamping tool (2) comprises a first clamping part (21), a first moving seat and a first driving part, wherein: The first clamping part (21) is installed on the first moving seat, and is used to fix or release the shell (100); The first driving part is used to drive the first moving seat to move up and down, so that the end of the shell (100) can approach or move away from the hot plate assembly (5).

6. The PFA filter housing welding apparatus of claim 2, wherein, The first end cover clamping tool (3) and the second end cover clamping tool (4) each comprise a second clamping piece (31), a second moving seat and a second driving piece, wherein: The second clamping piece (31) is installed on the second moving seat, and the second clamping piece (31) is used for fixing or releasing the first end cover (200) or the second end cover (300); The second driving piece is used for driving the second moving seat to lift, so that the first end cover (200) or the second end cover (300) can be close to or away from the end of the heat plate assembly (5) and the shell (100).

7. The PFA filter housing welding apparatus of claim 2, wherein, The heat plate assembly (5) comprises a third moving seat (51) and a third driving piece, wherein: Two rotating heat plates (52) are arranged on the third moving seat (51), one of the rotating heat plates (52) performs non-contact far infrared heat radiation on the end of the shell (100), and the other rotating heat plate (52) performs non-contact far infrared heat radiation on the first end cover (200) or the second end cover (300); The third driving piece is used for driving the third moving seat (51) to move horizontally, so that the heat plate assembly (5) can move out of the shell (100) and the first end cover (200) or the shell (100) and the second end cover (300) after heating is completed.

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