Conductive foam foaming machine

Abstract

The invention discloses a conductive foam foaming machine, and relates to the field of foam foaming, the conductive foam foaming machine comprises a tank body, a gas release device and a gas transfer device, the gas release device is rotatably installed at the bottom of the tank body through a first rotating shaft, the gas release device comprises at least one exhaust rod, and one side of the exhaust rod abuts against the inner wall of the tank body; the gas transfer device is arranged outside the tank body and is used for conveying gas above the mixture in the tank body into the gas release device; according to the conductive foam foaming machine, through cooperation of the gas transfer device and the gas release device, gas with certain pressure loaded in the foaming machine tank body can be continuously mixed with a mixture in an internal circulation mode, the contact area between the mixture and the loaded gas is increased, direct contact between the gas and the mixture is promoted, and the foaming efficiency is improved. And the gas circulation and mixing process is continuously carried out, so that the foaming rate is remarkably increased, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a foam foaming technology, in particular to a conductive foam foaming machine. Background Art

[0002] Conductive foam is made of conductive fiber cloth with conductivity and corrosion resistance, and is lined with low-compression PU foam. The raw materials of PU foam are mainly polymers, curing agents and other additives, which are mixed in the tank of the foaming machine. During the mixing process, inactive gas needs to be loaded into the mixing system under a certain pressure to dissolve the gas in the mixture. In order to improve the solubility, auxiliary stirring is generally used. However, the method of introducing gas only through the movement of the agitator and the movement of the liquid is less efficient. Summary of the invention

[0003] The purpose of the present invention is to provide a conductive foam foaming machine to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a conductive foam foaming machine, comprising a tank body, a feed inlet and a discharge outlet are respectively arranged at the top and the bottom of the tank body, a stirring device is arranged in the tank body, and further comprising:

[0005] A gas release device, which is rotatably mounted on the bottom of the tank body via a first rotating shaft, the gas release device can rotate around the central axis of the first rotating shaft, wherein the first rotating shaft is coaxially arranged with the tank body, the gas release device comprises at least one exhaust rod, one side of the exhaust rod abuts against the inner wall of the tank body, and a plurality of exhaust holes are arranged on the exhaust rod;

[0006] The gas transfer device is arranged outside the tank body, and is connected to the upper part of the tank body cavity and the gas release device, and is used for conveying the gas above the mixture in the tank body to the gas release device.

[0007] Furthermore, the gas release device also includes a plurality of connecting rods corresponding to and fixedly connected to the bottom of each exhaust rod, and the bottom of the connecting rod abuts against the bottom of the tank body.

[0008] Furthermore, a first gas channel in an "inverted U shape" is opened in the exhaust rod.

[0009] Furthermore, the gas transfer device includes a cylinder body, a transfer chamber is defined in the cylinder body, a piston assembly is provided in the transfer chamber, the piston assembly is connected to a driving mechanism for driving it to reciprocate in the transfer chamber, and when the piston assembly moves, the gas above the mixture in the tank body is always transported to the gas release device.

[0010] Furthermore, the cylinder body is in a circular ring shape, and the cylinder body is composed of two symmetrical closed cylinders and two open cylinders. The piston assembly includes two arc pistons, and the two arc pistons are respectively installed in the two closed cylinders. The middle parts of the two arc pistons are connected to the same annular push rod, and the annular push rod is fixedly connected to a driving rod arranged radially thereof. Both ends of the driving rod are located in the two open cylinders, and the middle part of the driving rod is connected to the driving mechanism.

[0011] Furthermore, the arc piston comprises two sub-pistons, a push plate is arranged between the two sub-pistons, the push plate is fixedly connected to the surface of the annular push rod, and the sub-piston is slidably connected to the annular push rod.

[0012] Further, the driving mechanism includes a bracket, a second rotating shaft is rotatably connected in the bracket, the upper end of the second rotating shaft is connected to the middle part of the driving rod, the lower end of the second rotating shaft is fixedly connected to the first swing arm, one end of the first swing arm is rotatably connected to the second swing arm, one end of the second swing arm is rotatably connected to an L-shaped rod, the other end of the L-shaped rod is connected to one end of the output shaft of the motor, and the motor is fixedly mounted on one end of the bracket.

[0013] Furthermore, the driving mechanism is connected to the first rotating shaft.

[0014] Compared with the prior art, the conductive foam foaming machine provided by the present invention has the following beneficial effects:

[0015] The conductive foam foaming machine cooperates with the gas transfer device and the gas release device, so that the gas at a certain pressure loaded in the tank can be continuously mixed with the mixture in an internal circulation manner, thereby increasing the contact area between the mixture and the loaded gas, promoting direct contact between the gas and the mixture, making the gas more easily soluble in the liquid, thereby improving the foaming effect, and through the circulation and internal release of the gas, the gas distribution in the entire system is made more uniform; the circulation and mixing process of the gas is continuously carried out, which significantly improves the foaming rate, shortens the foaming time, and thus improves the production efficiency and improves the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure of a tank body of a conductive foam foaming machine provided in an embodiment of the present invention;

[0018] Figure 2 The embodiment of the present invention provides Figure 1Schematic diagram of the local longitudinal section structure;

[0019] Figure 3 A schematic diagram of a partial structure of an exhaust rod provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of a tank body, a cylinder body and a driving mechanism in a separated state provided by an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of the structure of a cylinder body provided by an embodiment of the present invention when it is in a circular ring shape;

[0022] Figure 6 The embodiment of the present invention provides Figure 5 Schematic diagram of the cross-sectional structure;

[0023] Figure 7 A schematic diagram of the structure of a cylinder body arc piston provided in an embodiment of the present invention when it is composed of two sub-pistons;

[0024] Figure 8 A schematic diagram of the structure of a driving mechanism provided in an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 1. Tank body; 2. Stirring device; 3. Gas release device; 31. First rotating shaft; 32. Exhaust rod; 33. Exhaust hole; 34. Connecting rod; 35. First gas channel; 36. Connecting plate; 4. Gas transfer device; 41. Cylinder body; 411. Closed cylinder; 412. Open cylinder; 413. Annular push rod; 414. Drive rod; 415. Baffle; 416. Slider; 42. Transfer chamber; 43. Piston assembly; 431. Arc piston; 4311. Sub-piston; 4312. Push plate; 44. Drive mechanism; 441. Bracket; 442. Second rotating shaft; 443. First swing arm; 444. Second swing arm; 445. L-shaped rod; 446. Motor. DETAILED DESCRIPTION

[0027] When conductive foam is produced, a foam sheet is usually prepared first. The raw materials are mixed in a tank, and the mixed mixture is coated on release paper or a substrate coated with a release agent for heating and curing to obtain a polyurethane foam sheet. In order to make the bubbles in the foam sheet uniform and stable, an inactive gas is generally loaded during the stirring of the mixture to allow the gas to be incorporated under pressure and to increase the solubility of the gas. In the prior art, a direct loading method is usually adopted, that is, a loading gas of a certain pressure is filled into the tank. As described in the background technology, the efficiency of gas loading is low under this method. The present application provides a technical solution for solving this problem. In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] For examples, see Figure 1 - Figure 8 A conductive foam foaming machine includes a tank body 1, a feed inlet is provided at the top of the tank body 1, a discharge port is provided at one side of the bottom of the tank body 1, a stirring device 2 is arranged in the tank body 1, and further includes:

[0029] The gas release device 3 is rotatably mounted on the bottom of the tank body 1 via a first rotating shaft 31. The gas release device 3 can rotate around the central axis of the first rotating shaft 31, wherein the first rotating shaft 31 is coaxially arranged with the tank body 1. The gas release device 3 includes at least one exhaust rod 32, one side of the exhaust rod 32 abuts against the inner wall of the tank body 1, and a plurality of exhaust holes 33 are arranged on the exhaust rod 32;

[0030] The gas transfer device 4 is arranged outside the tank body 1 , and is connected to the upper part of the inner cavity of the tank body 1 and the gas release device 3 , so as to transfer the gas above the mixture in the tank body 1 to the gas release device 3 .

[0031] In one embodiment of the invention, the gas release device 3 further includes a plurality of connecting rods 34 corresponding to and fixedly connected to the bottom of each exhaust rod 32, and the bottom of the connecting rod 34 abuts against the bottom of the tank body 1;

[0032] like Figure 2 and Figure 3 As shown, one side of the exhaust rod 32 and the bottom of the connecting rod 34 are respectively in contact with the side wall and the bottom wall of the tank body 1. When the first rotating shaft 31 rotates and drives the exhaust rod 32 and the connecting rod 34 to rotate, the exhaust rod 32 and the connecting rod 34 will scrape the mixture on the inner wall of the tank body 1 to avoid the problem of poor gas loading uniformity due to the deposition of materials on the tank wall or poor fluidity at the tank wall during the gas loading of the mixture.

[0033] In one embodiment of the present invention, an "inverted U-shaped" first gas channel 35 is provided in the exhaust rod 32, one end of the first gas channel 35 is connected to each exhaust hole 33, and the other end of the first gas channel 35 is connected to the gas transfer device 4, and the height of the exhaust rod 32 is higher than the maximum height of the mixture in the tank body 1;

[0034] Since the exhaust hole 33 is located in the mixture, when the gas pressure in the first gas channel 35 changes, part of the mixture may enter the exhaust rod 32 through the exhaust hole 33. In order to avoid affecting the smoothness of the first gas channel 35, the inverted U-shaped first gas channel 35 and the exhaust rod 32 higher than the maximum height of the mixture in the tank body 1 are set, so that the mixture entering the exhaust rod 32 will not exceed the height of the original mixture at most, and will not go over the highest point of the first gas channel 35 and enter the other end. When the gas transfer device 4 delivers gas to exhaust the exhaust rod 32, the mixture in the first gas channel 35 will be pushed by the gas and discharged from the exhaust hole 33 into the original mixture. In some examples, in order to completely discharge the mixture entering the first gas channel 35, more exhaust holes 33 can be opened at the position where the exhaust rod 32 is located at the bottom of the first gas channel 35, and a slope can be set at the bottom of the first gas channel 35 to discharge the mixture as quickly and completely as possible;

[0035] Since the first gas channel 35 is provided, when the mixture in the tank body 1 is emptied and cleaned, the cleaning agent added in the tank body 1 can enter one end of the first gas channel 35. By intermittently delivering gas into the first gas channel 35, the cleaning agent in the tank body 1 can repeatedly enter one end of the first gas channel 35, thereby cleaning the first gas channel 35 and each exhaust hole 33;

[0036] In one embodiment of the present invention, a check valve (not shown) may be installed in the first gas channel 35 to further reduce the amount of the mixture entering the gas channel through the exhaust hole 33 .

[0037] In one embodiment of the present invention, it should be noted that the gas release device 3 also includes a connecting disk 36 installed at one end of the first rotating shaft 31, and the connecting disk 36 is fixedly connected to each connecting rod 34. A second gas channel connecting the first gas channel 35 and the gas transfer device 4 is opened on the connecting rod 34, the connecting disk 36 and the first rotating shaft 31. In some examples, the second gas channel can be a gas channel that passes through the connecting rod 34 and the connecting disk 36 and connects to the hollow first rotating shaft 31. Optionally, the connecting disk 36 can also have an annular gas channel on the circumference to connect the gas channels in each connecting rod 34 and the gas channel connecting the hollow first rotating shaft 31, or other gas channel setting methods for realizing the above-mentioned connection method are not limited in the embodiments of the present application;

[0038] In one embodiment of the present invention, a method for driving the first rotating shaft 31 to rotate is provided, and the lower end of the first rotating shaft 31 is connected to the output end of an electric motor, a hydraulic motor or a pneumatic motor. Optionally, the output end of the electric motor, the hydraulic motor or the pneumatic motor is connected to a reducer, and the output end of the reducer is connected to the first rotating shaft 31. Furthermore, the rotation direction of the first rotating shaft 31 is optional, so that the rotation direction of each exhaust rod 32 is the same as or opposite to the rotation direction of the stirring rod of the stirring device 2.

[0039] In one embodiment of the present invention, the gas transfer device 4 includes a cylinder body 41, a transfer chamber 42 is provided in the cylinder body 41, a piston assembly 43 is provided in the transfer chamber 42, the piston assembly 43 is connected to a driving mechanism 44 for driving it to reciprocate in the transfer chamber 42, and when the piston assembly 43 moves, the gas above the mixture in the tank body 1 is always transported to the gas release device 3;

[0040] In one embodiment of the present invention, a specific example of a gas transfer device 4 is provided, wherein the cylinder body 41 is cylindrical, and the piston assembly 43 includes a flat piston and a straight push rod, which is slidably connected to the inner wall of one end of the cylinder body 41, and the straight push rod is connected to a driving mechanism 44, which is a general air cylinder or a hydraulic cylinder or an electric telescopic rod. The cylinder body 41 located on both sides of the flat piston is provided with an air inlet and an air outlet connected to the transfer chamber 42, and the air inlet and the air outlet are respectively connected to the upper part of the inner cavity of the tank body 1 and the gas release device 3 through two air guide pipes, and a one-way valve is installed at the air inlet and the air outlet, and the one-way valve at the air inlet only allows gas to flow from the tank body 1 to the transfer chamber 42, and the one-way valve at the air outlet only allows gas to flow from the transfer chamber 42 to the gas release device 3; when the flat piston reciprocates in the transfer chamber 42, the transfer chamber 42 always absorbs the gas above the mixture in the tank body 1, and always delivers gas to the gas release device 3, so that part of the gas loaded in the tank body 1 is repeatedly mixed with the mixture in an internal circulation manner;

[0041] In one embodiment of the present invention, another specific example of a gas transfer device 4 is provided, wherein the cylinder body 41 is in a circular ring shape, and the cylinder body 41 is composed of two symmetrical closed cylinders 411 and two open cylinders 412, and the piston assembly 43 includes two arc pistons 431, and the two arc pistons 431 are respectively installed in the two closed cylinders 411, and the middle parts of the two arc pistons 431 are connected to the same annular push rod 413, and the annular push rod 413 is fixedly connected to a driving rod 414 arranged along its radial direction, and the two ends of the driving rod 414 are located in the two open cylinders 412, and the middle part of the driving rod 414 is connected to the driving mechanism 44; it should be understood that the cavity in the closed cylinder 411 is the transfer cavity 42, and the two ends of the driving rod 414 can be fixedly connected to a slider 416, and the slider 416 is slidably connected to the inner wall of the open cylinder 412;

[0042] In one embodiment of the present invention, Figure 6 As shown, a baffle 415 is arranged between the adjacent closed cylinder 411 and the open cylinder 412, and the annular push rod 413 is slidably connected to the inner wall of each baffle 415. The baffles 415 at both ends of the closed cylinder 411 are provided with an air inlet and an air outlet connected to the transfer chamber 42. The air inlet and the air outlet are connected to the upper part of the inner cavity of the tank body 1 and the gas release device 3 through two air guide pipes, wherein the air inlet is located on the outside of the cylinder body 41, and the air outlet is located on the inside of the cylinder body 41. There is a one-way valve (not shown in the figure), the one-way valve at the air inlet only allows the gas to flow from the tank body 1 to the transfer chamber 42, and the one-way valve at the air outlet only allows the gas to flow from the transfer chamber 42 to the gas release device 3. When the two arc pistons 431 reciprocate in their respective transfer chambers 42, the transfer chamber 42 always absorbs the gas above the mixture in the tank body 1 and always delivers gas to the gas release device 3, so that part of the gas loaded in the tank body 1 is repeatedly mixed with the mixture in an internal circulation manner;

[0043] It should be noted that, when the cylinder body 41 is in a circular ring state, taking the air outlet as an example (the same applies to each air inlet), the air outlets are all located on the inner side of the cylinder body 41, and each air outlet can be connected through the same annular pipe (not shown in the figure), and one end of the annular pipe is connected to the first gas channel 35 through the inner cavity of the first rotating shaft 31. In order to avoid mutual interference between the two transfer chambers 42, the two air outlets located in the same transfer chamber 42 are connected to a pipe, and then connected to the inner cavity of the first rotating shaft 31. The connection method of the connecting part can be connected by a rotary seal capable of guiding air in the prior art, or by other methods to avoid the rotation of the first rotating shaft 31 causing interference to the sealing of the connection, which is not limited in the present application;

[0044] In one embodiment of the present invention, the arc piston 431 includes two sub-pistons 4311, a push plate 4312 is disposed between the two sub-pistons 4311, the push plate 4312 is fixedly connected to the surface of the annular push rod 413, and the sub-piston 4311 is slidably connected to the annular push rod 413;

[0045] Specifically, taking one of the transfer chambers 42 as an example, Figure 7As shown, when the annular push rod 413 rotates, the push plate 4312 drives one of the sub-pistons 4311 to move first, and the movement of the sub-piston 4311 will drive the gas in the transfer chamber 42 on one side of it to flow out. Due to the existence of the gap between the two sub-pistons 4311, the other sub-piston 4311 will not move immediately, that is, when the previous sub-piston 4311 moves, the latter sub-piston 4311 will not move immediately due to the pressure difference. When the previous sub-piston 4311 moves to the point where the pressure between the two sub-pistons 4311 is less than the pressure in the transfer chamber 42 on the side of the latter sub-piston 4311, the latter piston starts to move. In this process, compared with the overall movement of the arc piston 431, it is avoided that the mixture in the tank body 1 is extracted at the early stage of the movement of the piston assembly 43. The gas above causes a problem that the pressure of the space above the mixture in the tank body 1 is greatly reduced. The large pressure reduction will lead to a decrease in the efficiency of loading gas in the mixture. Through the setting of two sub-pistons 4311, when the front sub-piston 4311 moves and delivers gas to the gas release device 3, the rear sub-piston 4311 does not move temporarily. When the rear sub-piston 4311 moves, the gas release device 3 has begun to release gas and replenish it to the space above the mixture in the tank body 1. When the gas transfer device 4 is transferring gas, the pressure of the space above the mixture in the tank body 1 changes less. The loading method of internal circulation of gas saves the total amount of gas used and improves the loading efficiency. It should be understood that the working process of the other transfer chamber 42 is the same as above.

[0046] In one embodiment of the present invention, the driving mechanism 44 includes a bracket 441, a second rotating shaft 442 is rotatably connected in the bracket 441, the upper end of the second rotating shaft 442 is connected to the middle of the driving rod 414, the lower end of the second rotating shaft 442 is fixedly connected to a first swing arm 443, one end of the first swing arm 443 is rotatably connected to the second swing arm 444, one end of the second swing arm 444 is rotatably connected to an L-shaped rod 445, the other end of the L-shaped rod 445 is connected to one end of the output shaft of a motor 446, and the motor 446 is fixedly installed at one end of the bracket 441, through The motor 446 drives the L-shaped rod 445 to rotate and drives the first swing arm 443 to move. The first swing arm 443 drives the second swing arm 444 to swing and drives the second rotating shaft 442 to reciprocate within a certain angle. The reciprocating rotation of the second rotating shaft 442 will drive the driving rod 414 to reciprocate. The reciprocating angle of the second rotating shaft 442 is adjusted by adjusting the length of the second swing arm 444, so that the driving rod 414 reciprocates within the required rotation angle range, thereby driving the piston assembly 43 to move, so that the gas transfer device 4 operates;

[0047] In one embodiment of the present invention, a driving mechanism 44 is provided to connect the first rotating shaft 31, and the first rotating shaft 31 is directly driven to rotate by the driving mechanism 44. Specifically, the cylinder body 41 is installed at the bottom of the tank body 1, and the first rotating shaft 31 and the second rotating shaft 442 are installed in a coaxial state (they can also be assembled with the aid of a coaxial connector), and the upper end of the second rotating shaft 442 extends to the first rotating shaft 31 and is fixedly connected to the first rotating shaft 31, and the first rotating shaft 31 is driven to rotate by the rotation of the second rotating shaft 442. It should be noted that since the second rotating shaft 442 rotates reciprocatingly, the first rotating shaft 31 will also rotate reciprocatingly, which will cause each exhaust rod 32 to reciprocate synchronously, but this does not affect the normal use of the gas release device 3.

[0048] In one embodiment of the present invention, a pressurizing device (not shown) is installed on the tank body 1 for filling a loading gas of a certain pressure into the sealed tank body 1, and a pressure gauge is used to monitor and replenish the consumed gas and reduce the pressure in real time.

[0049] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the present invention.

Claims

1. A conductive foam foaming machine, comprising a tank body, a feed inlet and a discharge inlet are respectively arranged at the top and bottom of the tank body, and a stirring device is arranged in the tank body, characterized in that: Also includes: A gas release device, which is rotatably mounted on the bottom of the tank body via a first rotating shaft, the gas release device can rotate around the central axis of the first rotating shaft, wherein the first rotating shaft is coaxially arranged with the tank body, the gas release device comprises at least one exhaust rod, one side of the exhaust rod abuts against the inner wall of the tank body, and a plurality of exhaust holes are arranged on the exhaust rod; The gas transfer device is arranged outside the tank body, and is connected to the upper part of the tank body cavity and the gas release device, and is used for conveying the gas above the mixture in the tank body to the gas release device.

2. A conductive foam foaming machine according to claim 1, characterized in that: The gas release device also includes a plurality of connecting rods which correspond to and are fixedly connected to the bottoms of the exhaust rods one by one, and the bottoms of the connecting rods abut against the bottom of the tank body.

3. A conductive foam foaming machine according to claim 1, characterized in that: A first gas passage in an "inverted U shape" is provided in the exhaust rod.

4. A conductive foam foaming machine according to claim 1, characterized in that: The gas transfer device includes a cylinder body, a transfer chamber is formed in the cylinder body, a piston assembly is provided in the transfer chamber, the piston assembly is connected to a driving mechanism for driving it to reciprocate in the transfer chamber, and when the piston assembly moves, the gas above the mixture in the tank body is always transported to the gas release device.

5. A conductive foam foaming machine according to claim 4, characterized in that: The cylinder body is in a circular ring shape, and is composed of two symmetrical closed cylinders and two open cylinders. The piston assembly includes two arc pistons, and the two arc pistons are respectively installed in the two closed cylinders. The middle parts of the two arc pistons are connected to the same annular push rod, and the annular push rod is fixedly connected to a driving rod arranged along its radial direction. The two ends of the driving rod are located in the two open cylinders, and the middle part of the driving rod is connected to the driving mechanism.

6. A conductive foam foaming machine according to claim 5, characterized in that: The arc piston comprises two sub-pistons, a push plate is arranged between the two sub-pistons, the push plate is fixedly connected to the surface of the annular push rod, and the sub-piston is slidably connected to the annular push rod.

7. A conductive foam foaming machine according to claim 5, characterized in that: The driving mechanism includes a bracket, a second rotating shaft is rotatably connected in the bracket, the upper end of the second rotating shaft is connected to the middle part of the driving rod, the lower end of the second rotating shaft is fixedly connected to the first swing arm, one end of the first swing arm is rotatably connected to the second swing arm, one end of the second swing arm is rotatably connected to an L-shaped rod, the other end of the L-shaped rod is connected to one end of the output shaft of the motor, and the motor is fixedly mounted at one end of the bracket.

8. A conductive foam foaming machine according to claim 7, characterized in that: The driving mechanism is connected to the first rotating shaft.

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