Fluid filling machine

Abstract

The invention belongs to the field of injecting fluid into barrels, and particularly relates to a fluid filling machine. In order to enable a filling machine to be suitable for fluid with large viscosity and poor fluidity, the invention provides a fluid filling machine. The fluid filling machine comprises a pressing disc used for pressing fluid all the time, a supporting base used for supporting a material barrel and a direct-acting driving mechanism used for driving the supporting base to move up and down. The supporting base is provided with a fixing mechanism used for fixing the material barrel in the filling process. The direct-acting driving mechanism is used for driving the supporting base to move upwards before fluid is injected into the material barrel so that the pressing disc can stretch into the material barrel, and the direct-acting driving mechanism is further used for driving the supporting base to move downwards in the process of injecting the fluid into the material barrel so that the maximum thrust borne by the local pressing disc can be reduced. When fluid is injected into the material barrel, the material barrel moves downwards, so that the maximum thrust of the fluid to the local pressure plate is reduced, and the pressure plate is prevented from inclining.

Description

Technical Field

[0001] The invention belongs to the field of injecting fluid into barrels, and in particular relates to a fluid filling machine. Background Art

[0002] A filling machine is required when filling the sealant into the barrel. During filling, the pressure plate of the filling machine needs to continuously apply constant pressure to the sealant to avoid bubbles in the sealant.

[0003] A Chinese utility model patent with authorization announcement number CN220537477U and authorization announcement date 2024.02.27 discloses a sealant constant pressure filling machine. In this filling machine, a pressure plate has a glue injection port (i.e., a material injection port), and a glue injection hose (i.e., a material injection hose) is connected to the material injection port. The cylinder (equivalent to a pressurizing mechanism) always applies a constant pressure to the pressure plate, and the pressure plate can move in the up and down directions.

[0004] When using the above-mentioned filling machine to fill sealants with low viscosity and good fluidity, first, move the pressure plate downward and extend it into the barrel. At this time, the pressure plate is in sealing contact with the inner wall of the barrel and together form a receiving chamber; then, inject the sealant into the receiving chamber from the injection port of the pressure plate; finally, wait for a certain period of time. After the sealant fills the receiving chamber, since there is still sealant continuously entering the receiving chamber, the internal pressure of the sealant in the receiving chamber will gradually increase, and the upward thrust of the sealant on the pressure plate will also gradually increase. After the thrust of the sealant on the pressure plate is greater than the pressure of the cylinder on the pressure plate, the sealant will push the pressure plate to move upward.

[0005] When using the above-mentioned filling machine to fill sealants with high viscosity and poor fluidity, due to the poor fluidity of the sealant, the sealant will accumulate in a certain area in a short period of time, rather than being evenly filled in the accommodating cavity. This causes the sealant to exert uneven thrust on the pressure plate, and the local pressure plate is subjected to a larger thrust, which causes the pressure plate to tilt during its upward movement, thereby causing the seal between the pressure plate and the barrel to fail, causing air to come into contact with the sealant, and the sealant to overflow above the pressure plate. At this point, the filling fails.

[0006] In summary, the above filling machine can only be used to fill sealants with lower viscosity and better fluidity, and cannot be used to fill fluids with higher viscosity and poorer fluidity. Summary of the invention

[0007] The object of the present invention is to provide a fluid filling machine to solve the technical problem that the existing filling machine cannot fill fluids with high viscosity and poor fluidity.

[0008] To achieve the above purpose, the technical solution of the fluid filling machine provided by the present invention is: A fluid filling machine includes a pressure plate for always pressing the fluid. The fluid filling machine also includes a support seat for supporting a barrel and a direct-acting drive mechanism for driving the support seat to move up and down. The support seat is provided with a fixing mechanism for fixing the barrel during the filling process; the direct-acting drive mechanism is used to drive the support seat to move upward before injecting fluid into the barrel so as to allow the pressure plate to extend into the barrel. The direct-acting drive mechanism is also used to drive the support seat to move downward during the process of injecting fluid into the barrel so as to reduce the maximum thrust exerted on the local pressure plate.

[0009] Furthermore, the pressure plate has an injection port, which is connected to an injection tube. A heating structure is arranged on the periphery of the injection tube, and the heating structure is used to directly heat the injection tube so as to indirectly heat the fluid in the injection tube.

[0010] Furthermore, the injection pipe is a hard metal pipe resistant to high temperature and high pressure; the direct-acting drive mechanism is used to drive the support seat to descend at a speed that satisfies: in the accommodating cavity surrounded by the pressure plate and the inner wall of the barrel, the speed at which the fluid increases is equal to the speed at which the accommodating cavity increases.

[0011] Furthermore, the fluid filling machine also includes a frame, the injection tube is fixedly installed on the frame, and an opening and closing cylinder is also provided on the frame. The output shaft of the opening and closing cylinder is connected to a transmission rod through a coupling, and the lower part of the transmission rod has a conical plug for extending into the injection tube and sealing the injection port. The conical plug has a blocking station for blocking the injection port and an opening station for having a set gap with the inner wall of the injection port.

[0012] Furthermore, the fluid filling machine further comprises a pressurizing mechanism for applying a constant pressure to the pressing plate.

[0013] Furthermore, the pressurizing mechanism includes a pressurizing cylinder and a transmission rod. The output end of the pressurizing cylinder is connected to the transmission rod through a coupling. The lower part of the transmission rod extends into an injection pipe connected to the injection port of the pressure plate and is used to apply pressure to the pressure plate.

[0014] Furthermore, a partition plate for dividing the injection port into at least two parts is provided at the lower part of the transmission rod.

[0015] Furthermore, the heating structure is a heating sleeve sleeved on the injection pipe.

[0016] Furthermore, the fixing mechanism comprises at least two clamping members for clamping the outer peripheral surface of the barrel together, and each clamping member is equipped with a clamping cylinder for driving the clamping member to approach or move away from the barrel.

[0017] Furthermore, the support seat includes a plurality of rollers for supporting the material barrel, so as to reduce the friction between the material barrel and the support seat.

[0018] The beneficial effects of the fluid filling machine of the present invention are as follows: the present invention is an improved invention. Since the pressure plate always presses the fluid in the cavity surrounded by the pressure plate and the inner wall of the barrel (hereinafter referred to as the accommodating chamber), the fluid can be guaranteed to be dense and free of bubbles. The main difference between the present invention and the prior art is that in the present invention, in the process of injecting fluid into the barrel, the direct-acting drive mechanism drives the support seat to move downward, and the support seat drives the barrel to move downward synchronously through the fixing mechanism, thereby increasing the volume of the accommodating chamber, reducing the resistance encountered by the fluid when flowing in the accommodating chamber, increasing the speed of the fluid flowing in the accommodating chamber, and reducing the maximum force of the fluid on the local pressure plate, thereby avoiding the tilt of the pressure plate, so that the fluid filling machine can be suitable for fluids with higher viscosity and poorer fluidity. Of course, the fluid filling machine in the present invention can also be suitable for fluids with lower viscosity and better fluidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic front view of the fluid filling machine of the present invention when the pressure plate is fixedly arranged; Figure 2 for Figure 1 AA view in the figure; Figure 3 for Figure 1 BB view in the figure; Figure 4 This is a front view schematic diagram of the fluid filling machine of the present invention when the pressure plate is movable.

[0020] Description of reference numerals: 1. Frame; 11. Guide rod; 2. Opening and closing cylinder; 2', pressurizing cylinder; 3. Coupling; 4. Transmission rod; 5. Pressure plate; 6. Direct-acting cylinder; 7. Material barrel; 8. Support seat; 81. Clamping cylinder; 82. Clamping piece; 83. Roller; 9. Heating sleeve; 10. Injection pipe. DETAILED DESCRIPTION

[0021] In order to solve the problems in the background technology, the core inventive concept of the present invention is: when injecting fluid into the barrel, the barrel is moved downward, thereby increasing the volume of the accommodating chamber (the cavity surrounded by the pressure plate and the inner wall of the barrel), reducing the resistance encountered by the fluid when flowing in the accommodating chamber, and allowing the fluid to flow more evenly to various positions of the accommodating chamber, thereby reducing the maximum force of the fluid on the local pressure plate and avoiding tilting of the pressure plate.

[0022] The present invention is further described in detail below in conjunction with embodiments.

[0023] Specific embodiments of the fluid filling machine provided by the present invention: like Figures 1 to 3As shown, as the first type of basic specific implementation, the fluid filling machine includes a pressure plate 5 for always pressing the fluid, a support seat 8 for supporting the barrel 7 and a direct-acting drive mechanism for driving the support seat 8 to move up and down, and the support seat 8 is provided with a fixing mechanism for fixing the barrel 7 during the filling process; the direct-acting drive mechanism is used to drive the support seat 8 to move upward before injecting fluid into the barrel 7, so as to extend the pressure plate 5 into the barrel 7, and the direct-acting drive mechanism is also used to drive the support seat 8 to move downward during the process of injecting fluid into the barrel 7, so as to reduce the maximum thrust exerted on the local pressure plate 5.

[0024] It should be noted that the pressure plate 5 has an injection port, to which is connected an injection pipe 10, which is used to connect to an upstream pipeline, so that the fluid enters the cavity (hereinafter referred to as the accommodating cavity) surrounded by the pressure plate 5 and the inner wall of the barrel 7 through the upstream pipeline, the injection pipe 10 and the injection port.

[0025] Since the pressure plate 5 always presses the fluid in the accommodating chamber, the fluid can be guaranteed to be dense and free of bubbles. The main difference between the present invention and the patent cited in the background technology section (Chinese utility model patent with authorization announcement number CN220537477U) is that: in the present invention, in the process of injecting fluid into the barrel 7, the direct-acting drive mechanism drives the support seat 8 to move downward, and the support seat 8 drives the barrel 7 to move downward synchronously through the fixing mechanism, thereby increasing the volume of the accommodating chamber, reducing the resistance encountered by the fluid when flowing in the accommodating chamber, increasing the speed of the fluid flowing in the accommodating chamber, and reducing the maximum force of the fluid on the local pressure plate 5, thereby avoiding the tilt of the pressure plate 5, so that the fluid filling machine can be applied to fluids with higher viscosity and poorer fluidity. Of course, the fluid filling machine in the present invention can also be applied to fluids with lower viscosity and better fluidity.

[0026] When a quantitative conveying device such as a metering pump is used to deliver fluid to the accommodating chamber at a constant speed and in a constant quantity, the support seat 8 can be made to descend at a uniform speed. At this time, within any period of time, the volume of the fluid delivered into the barrel 7 by the quantitative conveying device is equal to the increased volume of the accommodating chamber, and the position of the pressure plate 5 remains unchanged.

[0027] For fluids with a high freezing point, such as sealants, the higher the temperature, the better the fluidity of the fluid. When the temperature is lower than the freezing point, the fluid will solidify into a solid. Therefore, the fluid needs to be heated first, and then the high-temperature fluid is allowed to flow into the barrel 7.

[0028] In order to make the fluid flow into the barrel 7 better, Figures 1 to 3As shown, in the preferred 1-1 specific implementation, a heating structure is provided on the periphery of the injection tube 10, and the heating structure is used to directly heat the injection tube 10, so as to indirectly heat the fluid in the injection tube 10, so that the fluid can flow into the accommodating cavity at a higher temperature. At this time, the viscosity of the fluid flowing into the accommodating cavity is lower and the fluidity is better, so that the fluid can flow evenly to all parts of the accommodating cavity, reduce the maximum force of the fluid on the local pressure plate 5, and avoid the tilting of the pressure plate 5. At the same time, the fluid can also be transported at a lower temperature in the pipeline upstream of the injection tube 10, reduce the temperature difference between the fluid and the external environment, and reduce heat loss.

[0029] Preferably, the heating structure is a heating sleeve 9 sleeved on the injection tube 10, and the heating sleeve 9 can be built with an electric heating wire, which has a simple structure. Of course, the heating sleeve 9 can also have a flow channel, and the water inlet and outlet of the flow channel are respectively connected to the high-temperature steam delivery pipeline to use steam to heat the fluid; or, the heating structure is a plurality of electric heating rods arranged on the periphery of the injection tube 10, and the number of electric heating rods can be three, four or more, and all the electric heating rods are evenly spaced around the injection tube 10 on the same circumference.

[0030] In the present invention, the specific structure of the heating structure is not limited, as long as the heating structure can heat the injection pipe 10 .

[0031] like Figures 1 to 3 As shown, in the preferred 1-1-1 specific implementation, the injection pipe 10 is a hard metal pipe resistant to high temperature and pressure, such as a steel pipe, which has a simple structure and a low cost compared to a soft pipe. At the same time, the metal pipe has good thermal conductivity, which is more conducive to the heating structure indirectly heating the fluid through the injection pipe 10.

[0032] In this specific embodiment, the speed at which the direct-acting drive mechanism drives the support seat 8 to descend satisfies: in the accommodating chamber surrounded by the pressure plate 5 and the inner wall of the barrel 7, the speed at which the fluid increases is equal to the speed at which the accommodating chamber increases, so that the position of the pressure plate 5 remains unchanged. At this time, within any period of time, the volume of the fluid in the accommodating chamber is equal to the volume of the accommodating chamber. Specifically, a quantitative delivery device can be used to deliver the fluid to the accommodating chamber at a constant speed and quantity, and the support seat 8 can be made to descend at a uniform speed, so as to ensure that the positions of the pressure plate 5 and the hard metal pipe remain unchanged.

[0033] Reference Figures 1 to 3 As shown, in the 1-1-2 type of specific implementation, the injection tube 10 is a hose resistant to high temperature and high pressure. In this type of specific implementation, the position of the pressure plate 5 can be changed, that is, the pressure plate 5 can move up and down.

[0034] Reference Figures 1 to 3As shown, in the 1-2 type of specific implementation, no heating structure is provided on the periphery of the injection tube 10. At this time, relative to the 1-1 type of specific implementation, the fluid needs to flow into the injection tube 10 at a higher initial temperature.

[0035] In order to better inject the fluid into the barrel 7, the following improvements are made to the arrangement of the pressure plate 5 in the present invention: Reference Figures 1 to 3 As shown, in the second specific embodiment, the fluid filling machine further includes a frame 1 , and a pressure plate 5 is fixed on the frame 1 .

[0036] In the specific implementation manner of category 2-1, a solenoid valve is provided at the injection port, and the opening and closing of the injection port is controlled by the solenoid valve. At this time, the material extruded from the injection port is a solid cylindrical material.

[0037] Reference Figures 1 to 3 As shown, in the preferred specific embodiment of Class 2-2, an opening and closing cylinder 2 is also provided on the frame 1, and the output shaft of the opening and closing cylinder 2 is connected to a transmission rod 4 through a coupling 3. The lower part of the transmission rod 4 has a conical plug for extending into the injection pipe 10 and sealing the injection port, and the conical plug has a sealing station for sealing the injection port and an opening station for having a set gap with the inner wall of the injection port.

[0038] With respect to the specific implementation mode of category 2-1, during injection, the conical plug is in the open position. At this time, the material squeezed out from the conical plug and the inner wall of the injection port is in the shape of a hollow cylinder or a hollow cone, thereby increasing the ratio of the fluid surface area to volume, which is beneficial for the material to diffuse to various locations in the barrel 7, and is beneficial for further reducing the maximum pressure on the local pressure plate 5.

[0039] Reference Figure 4 As shown, in the third type of specific implementation, the fluid filling machine further comprises a pressurizing mechanism for applying a constant pressure to the pressure plate 5, and the pressure plate 5 can move up and down.

[0040] In the present invention, since the on-site environment is relatively humid, the pressurizing mechanism is preferably a pressurizing cylinder 2'. Hereinafter, the present invention will be introduced by taking the pressurizing mechanism as the pressurizing cylinder 2' as an example.

[0041] In the 3-1 type specific implementation method, the pressurizing mechanism includes a pressurizing cylinder 2' and a transmission rod 4. The output end of the pressurizing cylinder 2' is connected to the transmission rod 4 through a coupling 3. The lower part of the transmission rod 4 extends into the injection pipe 10 connected to the injection port of the pressure plate 5 and is used to apply pressure to the pressure plate 5. The structure is simple.

[0042] Preferably, in the specific implementation manner of type 3-1-1, a partition is provided at the lower portion of the transmission rod 4 for dividing the injection port into at least two parts, which may be two parts, three parts or more parts, thereby increasing the ratio of the fluid surface area to volume, making it easier for the fluid to diffuse to various locations in the barrel 7, which is beneficial to further reduce the maximum pressure on the local pressure plate 5.

[0043] In the 3-1-2 type of specific implementation, a partition may not be provided at the lower portion of the transmission rod 4. In this case, the fluid squeezed out from the injection port is a cylindrical fluid.

[0044] The same as in the 1-1-1 specific implementation manner is that in the 3-1 specific implementation manner, the fluid can also be quantitatively delivered to the accommodating chamber through the quantitative delivery device, and the support seat 8 can be lowered at a uniform speed to ensure that the position of the pressure plate 5 remains unchanged. At this time, a hard metal pipe can be installed on the pressure plate 5.

[0045] Of course, during the injection process, the pressure plate 5 can also move up and down. At this time, the injection pipe 10 needs to be a hose.

[0046] Reference Figures 1 to 4 As shown, in the fourth category of specific implementations, referring to the Chinese utility model patent with authorization announcement number CN220537477U, the output end of the pressurized cylinder 2' is connected to a pressurized frame, the pressurized frame includes an upper plate, a lower plate and a connecting column connecting the upper plate and the lower plate, the output end of the pressurized cylinder 2' is fixedly connected to the upper plate, the pressure plate 5 is fixedly connected to the lower plate, and the portion of the injection pipe 10 used to connect to the injection port is located between the upper plate and the lower plate.

[0047] In order to simplify the structure, the present invention makes the following improvements to the direct-acting drive mechanism: like Figures 1 to 3 As shown, in the preferred fifth embodiment, the direct-acting drive mechanism includes two groups of direct-acting cylinders 6 respectively located on both sides of the support seat 8, and the number of cylinders in each group can be one, two or more. The direct-acting cylinder 6 is installed on the frame 1, and the cylinder body of the direct-acting cylinder 6 is located above the support seat 8. The output end of the direct-acting cylinder 6 is transmission-connected to the support seat 8. The structure is simple, and the lowest position of the support seat 8 is low, which is convenient for the staff to push the barrel 7 onto the support seat 8 and push the barrel 7 off the support seat 8.

[0048] Reference Figures 1 to 3 As shown, in the sixth embodiment, the direct-acting drive mechanism includes a direct-acting cylinder 6 arranged at the bottom of the support seat 8. At this time, a pit can be dug on the ground to lower the height of the support seat 8, or a slope can be set near the support seat 8 to facilitate the staff to move the bucket 7.

[0049] In order to simplify the structure, the present invention makes the following improvements to the fixing mechanism: like Figures 1 to 3 As shown, in the preferred embodiment of the seventh category, the fixing mechanism includes at least two clamping members 82 for jointly clamping the outer peripheral surface of the barrel 7, and each clamping member 82 is provided with a clamping cylinder 81 for driving the clamping member 82 to approach or move away from the barrel 7. The number of the clamping members 82 can specifically be two, three or more, and the structure is simple.

[0050] Reference Figures 1 to 3 As shown, in the eighth embodiment, the fixing mechanism includes a fixing plate movably mounted on the frame 1, a through hole matching the outer diameter of the barrel 7 is provided on the fixing plate, and a cylinder is provided on the fixing plate for driving the fixing plate to move up and down. During filling, the barrel 7 is first placed on the support seat 8; then, the fixing plate is driven downward by the cylinder, and the upper end of the barrel 7 is passed through the through hole; then, glue is injected into the barrel 7; finally, after the glue injection is completed, the fixing plate is driven upward by the cylinder, so that the fixing plate is separated from the barrel 7.

[0051] In order to enable the support base 8 to move up and down better, the present invention makes the following improvements to the frame 1 and the support base 8: like Figures 1 to 3 As shown, in a preferred ninth embodiment, the fluid filling machine further comprises a frame 1, and the frame 1 and the support seat 8 are guided and moved in cooperation along the up and down directions through a guide structure.

[0052] like Figures 1 to 3 As shown, in the preferred specific implementation manner of category 9-1, a guide hole is provided on the support seat 8, and the frame 1 includes a guide rod 11 passing through the guide hole. The support seat 8 is guided and slidably matched with the guide rod 11 through the guide hole, and the structure is simple.

[0053] Reference Figures 1 to 3 As shown, in the 9-2 specific implementation manner, pulleys are provided on both sides of the support seat 8, and a slide rail is provided on the frame 1. The pulleys are located in the slide rail to enable the support seat 8 and the frame 1 to guide rolling cooperation.

[0054] Of course, the support seat 8 can also cooperate with the frame 1 in guiding and moving along the up and down directions in other ways, which will not be described in detail here.

[0055] Reference Figures 1 to 3 As shown, in the tenth embodiment, there is no guide structure on the frame 1 and the support base 8. At this time, it is necessary to precisely control the synchronous extension and retraction of all cylinders to avoid the support base 8 from tilting.

[0056] In order to facilitate the staff to push the material barrel 7 onto the support seat 8 and push the material barrel 7 off the support seat 8, the present invention makes the following improvements to the support seat 8: like Figures 1 to 3As shown, in the preferred 11th embodiment, the support base 8 includes a plurality of rollers 83 for supporting the material barrel 7, so as to reduce the friction between the material barrel 7 and the support base 8, thereby facilitating the staff to push the material barrel 7 onto the support base 8 and push the material barrel 7 off the support base 8. The number of the rollers 83 may be three, four or more.

[0057] Reference Figures 1 to 3 As shown, in the twelfth embodiment, the support seat 8 has a support plane for supporting the material barrel 7 , and the support plane is relatively smooth to reduce the friction between the material barrel 7 and the support seat 8 .

[0058] It should be noted that in the specific embodiments described above, in order to conveniently achieve electrical insulation, the pressurizing mechanism, the direct-acting drive mechanism and the fixing mechanism all use cylinders as power sources, but in other specific embodiments, the pressurizing mechanism, the direct-acting drive mechanism and the fixing mechanism may also use existing power sources such as hydraulic cylinders or electric cylinders.

[0059] It should be noted that the present invention only classifies the specific embodiments according to specific structures, which does not mean that other categories do not contain this specific structure. For example, the structure of the first category of specific embodiments may be the same as that of the second or third category of specific embodiments.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions recorded in the aforementioned embodiments without creative work, or to replace some of the technical features therein with equivalents, or to organically combine different types of specific implementations, thereby combining the attached Figures 1 to 4 The two specific implementations are given in the figure. Of course, those skilled in the art can also combine the specific implementations not given in the other drawings of the specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fluid filling machine, comprising a pressure plate for always pressing the fluid, characterized in that: The fluid filling machine also includes a support base for supporting the barrel and a direct-acting drive mechanism for driving the support base to move up and down, and a fixing mechanism for fixing the barrel during the filling process is arranged on the support base; The direct-acting drive mechanism is used to drive the support seat to move upward before injecting fluid into the barrel so as to allow the pressure plate to extend into the barrel. The direct-acting drive mechanism is also used to drive the support seat to move downward during the process of injecting fluid into the barrel so as to reduce the maximum thrust exerted on the local pressure plate.

2. The fluid filling machine according to claim 1, characterized in that: The pressing plate has an injection port, which is connected to an injection pipe. A heating structure is arranged on the periphery of the injection pipe. The heating structure is used to directly heat the injection pipe so as to indirectly heat the fluid in the injection pipe.

3. The fluid filling machine according to claim 2, characterized in that: The injection pipe is a hard metal pipe resistant to high temperature and high pressure; the direct-acting drive mechanism is used to drive the support seat to descend at a speed that satisfies: in the accommodating cavity surrounded by the pressure plate and the inner wall of the barrel, the speed at which the fluid increases is equal to the speed at which the accommodating cavity increases.

4. The fluid filling machine according to claim 3, characterized in that: The fluid filling machine also includes a frame, the injection tube is fixedly installed on the frame, and an opening and closing cylinder is also provided on the frame. The output shaft of the opening and closing cylinder is connected to a transmission rod through a coupling, and the lower part of the transmission rod has a conical plug for extending into the injection tube and sealing the injection port. The conical plug has a blocking station for blocking the injection port and an opening station for having a set gap with the inner wall of the injection port.

5. The fluid filling machine according to any one of claims 1 to 3, characterized in that: The fluid filling machine further comprises a pressurizing mechanism for applying a constant pressure to the pressing plate.

6. The fluid filling machine according to claim 5, characterized in that: The pressurizing mechanism includes a pressurizing cylinder and a transmission rod. The output end of the pressurizing cylinder is connected to the transmission rod through a coupling. The lower part of the transmission rod extends into an injection pipe connected to the injection port of the pressure plate and is used to apply pressure to the pressure plate.

7. The fluid filling machine according to claim 6, characterized in that: A partition plate for dividing the injection port into at least two parts is arranged at the lower part of the transmission rod.

8. The fluid filling machine according to any one of claims 2 to 4, characterized in that: The heating structure is a heating sleeve sleeved on the injection pipe.

9. The fluid filling machine according to any one of claims 1 to 4, characterized in that: The fixing mechanism comprises at least two clamping members for clamping the outer peripheral surface of the barrel together, and each clamping member is provided with a clamping cylinder for driving the clamping member to approach or move away from the barrel.

10. The fluid filling machine according to any one of claims 1 to 4, characterized in that: The support seat includes a plurality of rollers for supporting the material barrel so as to reduce the friction between the material barrel and the support seat.

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