Continuous injection device and high-pressure foaming equipment

Abstract

The invention belongs to the technical field of high-pressure foaming machines, and discloses a continuous injection device and high-pressure foaming equipment, the continuous injection device comprises a feeding assembly for providing injection materials, an injection assembly and a driving assembly; a feeding port of an injection output pipe of the injection assembly is connected with a first material cylinder and a second material cylinder, an outlet of a first storage cavity of the first material cylinder communicates with the injection output pipe, an inlet of the first storage cavity communicates with the feeding assembly, and a first piston mechanism can reciprocate in the first storage cavity so that the first storage cavity can be switched between a storage state and an injection state. An outlet of a second material storage cavity of the second material cylinder is communicated with the injection output pipe, an inlet of the second material storage cavity is communicated with the feeding assembly, and the second piston mechanism can reciprocate in the second material storage cavity so that the second material storage cavity can be switched between a material storage state and an injection state; the driving assembly simultaneously drives the first piston mechanism and the second piston mechanism to act. The continuous injection device provided by the invention can realize continuous injection, has no storage waiting time, shortens the process time, and improves the production efficiency of high-pressure foaming equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure foam machines, and particularly to a continuous injection device and a high-pressure foam equipment. Background Art

[0002] Polyurethane is a polymer compound with a variety of excellent properties. Compared with traditional metal materials, it has the advantages of light weight, corrosion resistance, low processing cost, wear resistance and low noise. Compared with traditional plastic materials, it has the advantages of wear resistance, non-brittle and elastic memory. Compared with rubber materials, it has the advantages of cut resistance, tear resistance, wear resistance, ozone resistance and high load-bearing capacity, and can also be used for potting and casting processes. Therefore, since the industrialization of polyurethane materials, they have been widely used in many industries.

[0003] Polyurethane is formed by foaming injection molding. Compared with low-pressure foam machines, high-pressure foam machines have excellent mixing effects, which can make the cell structure of polyurethane products stable and uniform, and is conducive to performance stability. Moreover, high-pressure foam machines usually have a mixing pressure of 120 bar - 200 bar, and there will be no residual materials left after the collision and mixing in the mixing head. Therefore, 5% - 10% of raw materials can be saved. To ensure reaching the mixing pressure, high-pressure foam machines mostly adopt plunger-type barrels. The plunger-type barrel realizes material storage and injection through the up and down movement of the plunger. This results in the need for time for the high-pressure foam machine to store materials and it cannot perform continuous injection, forming waiting time during material storage, with low production efficiency and prolonged process time. Summary of the Invention

[0004] The first object of the present invention is to provide a continuous injection device, which is used to solve the problem that the existing high-pressure foam machines cannot perform continuous injection, with low production efficiency and prolonged process time.

[0005] To achieve this purpose, on the one hand, the present invention adopts the following technical solutions:

[0006] Provide a continuous injection device, including:

[0007] A feeding assembly, which is used to provide injection materials;

[0008] An injection assembly, wherein the injection assembly comprises a first material cylinder, a second material cylinder and an injection output tube, wherein the feed port of the injection output tube is connected to both the first material cylinder and the second material cylinder, wherein the first material cylinder comprises a first material storage chamber and a first piston mechanism, wherein the outlet of the first material storage chamber is connected to the injection output tube, and the inlet of the first material storage chamber is connected to the feeding assembly, and the first piston mechanism is reciprocatably disposed in the first material storage chamber so that the first material storage chamber can be switched between a material storage state and an injection state; wherein the second material cylinder comprises a second material storage chamber and a second piston mechanism, wherein the outlet of the second material storage chamber is connected to the injection output tube, and the inlet of the second material storage chamber is connected to the feeding assembly, and the second piston mechanism is reciprocatably disposed in the second material storage chamber so that the second material storage chamber can be switched between a material storage state and an injection state;

[0009] A driving assembly is transmission-connected to the injection assembly, and the driving assembly simultaneously drives the first piston mechanism and the second piston mechanism to operate so that the first storage chamber and the second storage chamber are in different working states.

[0010] In one embodiment, the first piston mechanism includes a first transmission screw, and the second piston mechanism includes a second transmission screw, the first transmission screw and the second transmission screw are coaxially arranged or parallelly arranged, and the driving assembly includes a driving motor, which is transmission-connected to the first transmission screw and the second transmission screw, and the driving motor is used to rotate the first transmission screw and the second transmission screw at the same time to drive the first piston mechanism and the second piston mechanism to move simultaneously.

[0011] In one embodiment, the first transmission screw and the second transmission screw have opposite rotation directions and are parallel to each other, and the first storage chamber and the second storage chamber are arranged side by side. When the first transmission screw and the second transmission screw rotate at the same time, the movement directions of the first piston mechanism and the second piston mechanism are opposite, so that the first storage chamber and the second storage chamber are in different working states.

[0012] In one embodiment, the drive assembly also includes a transmission gearbox, the input shaft of the transmission gearbox is connected to the output end of the drive motor, the transmission gearbox also includes two parallel output shafts, the two output shafts are respectively connected to the first transmission screw and the second transmission screw, and the input shaft is connected to the two output shafts so that the two output shafts rotate in opposite directions at the same time.

[0013] In one embodiment, the continuous injection device further includes a support frame. The first material cylinder and the second material cylinder are detachably connected to the support frame. The first transmission lead screw and the second transmission lead screw reciprocate in the height direction of the support frame. The transmission gearbox is arranged at the top of the support frame. The first transmission lead screw and the second transmission lead screw are both perpendicular to the output shaft. The drive assembly further includes a first transmission mechanism and a second transmission mechanism. The first transmission mechanism is respectively connected to one of the two output shafts and the first transmission lead screw. The second transmission mechanism is respectively connected to the other of the two output shafts and the second transmission lead screw. The first transmission mechanism and the second transmission mechanism are both used to convert horizontal rotation into vertical rotation.

[0014] In one embodiment, the first transmission mechanism includes a first worm reducer and a first transmission gear set. The first transmission gear set is respectively meshed and connected to the first worm reducer and the output shaft. The first worm reducer is connected to the first transmission lead screw. The second transmission mechanism includes a second worm reducer and a second transmission gear set. The second transmission gear set is respectively meshed and connected to the second worm reducer and the output shaft. The second worm reducer is connected to the second transmission lead screw.

[0015] In one embodiment, multiple groups of the feeding assembly and the injection assembly are provided. The multiple groups of the feeding assembly and the multiple groups of the injection assembly correspond to each other one by one. The multiple groups of the injection assembly are arranged at intervals in the length direction of the support frame.

[0016] In one embodiment, the injection assembly includes two first one-way valves and two second one-way valves. The two first one-way valves are respectively arranged at the outlet and the inlet of the first storage cavity. The first one-way valve is used to selectively connect the first storage cavity to the feeding assembly or the injection output pipe. The two second one-way valves are respectively arranged at the outlet and the inlet of the second storage cavity. The second one-way valve is used to selectively connect the second storage cavity to the feeding assembly or the injection output pipe.

[0017] Another object of the present invention is to provide a high-pressure foaming device, and the continuous injection device thereof can achieve continuous injection, without storage waiting time, shorten the process time, and improve the production efficiency of the high-pressure foaming device.

[0018] To achieve this object, the present invention adopts the following technical solutions in another aspect:

[0019] A high-pressure foaming device is provided, including the continuous injection device as described above. The high-pressure foaming device further includes a stirring motor. The feeding assembly of the continuous injection device includes a material kettle. The stirring motor is connected to the material kettle and is used to stir the injection material in the material kettle.

[0020] In one embodiment, the high-pressure foaming device further includes a mixing assembly, the mixing assembly includes a mixing head and a mixing material mechanism connected to each other, the mixing material mechanism is used to provide a mixed material, the mixing head is connected to the injection output pipe, and the mixing head is used to mix the mixed material and the injection material; and / or,

[0021] The high-pressure foaming device further includes a filter, the filter is arranged between the feeding assembly and the injection assembly, and the filter is used to filter the injection material.

[0022] Advantages of the present invention:

[0023] For the continuous injection device provided by the present invention, its injection assembly includes a first material cylinder, a second material cylinder and an injection output pipe. The feed inlet of the injection output pipe is connected to the first material cylinder and the second material cylinder at the same time. The first material cylinder includes a first storage cavity and a first piston mechanism. The outlet of the first storage cavity communicates with the injection output pipe, the inlet of the first storage cavity communicates with the feeding assembly, and the first piston mechanism is reciprocally movably arranged in the first storage cavity; the second material cylinder includes a second storage cavity and a second piston mechanism. The outlet of the second storage cavity communicates with the injection output pipe, the inlet of the second storage cavity communicates with the feeding assembly, and the second piston mechanism is reciprocally movably arranged in the second storage cavity. In the storage state, the first piston mechanism moves to expand the volume of the first storage cavity and form a negative pressure, and the feeding assembly can inject the injection material into the first storage cavity; in the injection state, the first piston mechanism moves in the reverse direction to reduce the volume of the first storage cavity and form a high pressure, and then injects the high-pressure injection material into the injection output pipe; the working principle of the second material cylinder is the same as that of the above-mentioned first material cylinder. The driving assembly simultaneously drives the first piston mechanism and the second piston mechanism to act, so that the first storage cavity and the second storage cavity are in different working states, that is, when the first storage cavity is in the storage state, the second storage cavity is in the injection state. With the reciprocating movement of the first piston mechanism and the reciprocating movement of the second piston mechanism, when the first storage cavity finishes storing materials and is converted into the injection state, the second storage cavity discharges all the injection materials and is converted from the injection state to the storage state, and so on in a cycle. In this way, the first storage cavity and the second storage cavity can always perform an injection action and a storage action respectively, greatly shortening the process time and improving the production efficiency; the first piston mechanism and the second piston mechanism can make the first material cylinder and the second material cylinder have a relatively high working pressure, thereby realizing high-pressure injection, meeting the process parameter requirements of the high-pressure foaming device, ensuring that the performance of the polyurethane reaches the use requirements, and avoiding residual injection materials in the first storage cavity and the second storage cavity. Moreover, the continuous injection device has a simple structure and can operate relatively stably.

[0024] The high-pressure foaming equipment provided by the present invention includes the above-mentioned continuous injection device and a stirring motor. The first storage chamber and the second storage chamber of the continuous injection device can always perform an injection action and a storage action respectively, greatly shortening the process time and improving production efficiency. The first piston mechanism and the second piston mechanism can enable the first cylinder and the second cylinder to have a relatively high working pressure, thereby realizing high-pressure injection, meeting the process parameter requirements of the high-pressure foaming equipment, ensuring that the performance of the polyurethane reaches the usage requirements, and avoiding residual injection materials in the first storage chamber and the second storage chamber. The stirring motor can increase the uniformity of the injection materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural diagram of the high-pressure foaming equipment provided by an embodiment of the present invention;

[0026] Figure 2 is Figure 1 a partial enlarged schematic view of part A in FIG.

[0027] Figure 3 FIG. is a front view of the structure of the high-pressure foaming equipment provided by an embodiment of the present invention.

[0028] In the figure:

[0029] 1. Feeding assembly; 11. Kettle.

[0030] 2. Injection assembly; 21. First cylinder; 211. First storage chamber; 212. First piston mechanism; 2121. First driving lead screw; 22. Second cylinder; 221. Second storage chamber; 222. Second piston mechanism; 2221. Second driving lead screw; 23. Injection output pipe.

[0031] 3. Driving assembly; 31. Driving motor; 32. Transmission gearbox; 321. Input shaft; 322. Output shaft; 33. First transmission mechanism; 331. First worm reducer; 332. First transmission gear set; 34. Second transmission mechanism; 341. Second worm reducer; 342. Second transmission gear set.

[0032] 4. Support frame;

[0033] 100. Stirring motor; 200. Filter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0035] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0038] As Figures 1 to 3 shown, this embodiment provides a continuous injection device. The continuous injection device includes a feeding component 1, an injection component 2, and a driving component 3. The feeding component 1 is used to provide injection materials; the injection materials include but are not limited to the raw materials for forming polyurethane.

[0039] The injection assembly 2 includes a first material cylinder 21, a second material cylinder 22 and an injection output tube 23, the feed port of the injection output tube 23 is connected to the first material cylinder 21 and the second material cylinder 22 at the same time, the first material cylinder 21 includes a first storage chamber 211 and a first piston mechanism 212, the outlet of the first storage chamber 211 is connected to the injection output tube 23, the inlet of the first storage chamber 211 is connected to the feeding assembly 1, and the first piston mechanism 212 can be reciprocatingly arranged in the first storage chamber 211 to enable the first storage chamber 211 to switch between a storage state and an injection state; the second material cylinder 22 includes a second storage chamber 221 and a second piston mechanism 222, the outlet of the second storage chamber 221 is connected to the injection output tube 23, the inlet of the second storage chamber 221 is connected to the feeding assembly 1, and the second piston mechanism 222 can be reciprocatingly arranged in the second storage chamber 221 to enable the second storage chamber 221 to switch between a storage state and an injection state. In the material storage state, the first piston mechanism 212 moves to expand the volume of the first material storage chamber 211 and form a negative pressure, and the feeding component 1 can inject the injection material into the first material storage chamber 211; in the injection state, the first piston mechanism 212 moves in the opposite direction to reduce the volume of the first material storage chamber 211 and form a high pressure, thereby injecting the high-pressure injection material into the injection output tube 23; the working principle of the second material cylinder 22 is the same as the working principle of the first material cylinder 21. The driving component 3 is connected to the injection component 2 in a transmission manner, and the driving component 3 drives the first piston mechanism 212 and the second piston mechanism 222 to move at the same time, so that the first material storage chamber 211 and the second material storage chamber 221 are in different working states, that is, when the first material storage chamber 211 is in the material storage state, the second material storage chamber 221 is in the injection state, and with the reciprocating movement of the first piston mechanism 212 and the reciprocating movement of the second piston mechanism 222, when the first material storage chamber 211 completes the material storage and is converted to the injection state, the second storage chamber 221 discharges all the injection materials and converts from the injection state to the injection state. The first material storage chamber 211 and the second material storage chamber 221 are transformed into a material storage state, and the cycle is repeated. In this way, one of the first material storage chamber 211 and the second material storage chamber 221 can always perform an injection action while the other performs a material storage action, which greatly shortens the process time and improves production efficiency. The first piston mechanism 212 and the second piston mechanism 222 can make the first material cylinder 21 and the second material cylinder 22 have a higher working pressure, thereby achieving high-pressure injection, meeting the process parameter requirements of the high-pressure foaming equipment, ensuring that the performance of the polyurethane meets the use requirements, and avoiding residual injection materials in the first material storage chamber 211 and the second material storage chamber 221. Moreover, the continuous injection device has a simple structure and can operate relatively stably.

[0040] It should be noted that the continuous injection device provided in the embodiment of the present invention is used to produce a variety of polymer compounds not limited to polyurethane, which will not be described one by one here.

[0041] In one embodiment, the first piston mechanism 212 includes a first transmission lead screw 2121, the second piston mechanism 222 includes a second transmission lead screw 2221, and the drive assembly 3 includes a drive motor 31. The drive motor 31 is drivingly connected to the first transmission lead screw 2121 and the second transmission lead screw 2221. The drive motor 31 is configured to rotate the first transmission lead screw 2121 and the second transmission lead screw 2221 simultaneously, so as to drive the first piston mechanism 212 and the second piston mechanism 222 to move simultaneously. In practical applications, the first transmission lead screw 2121 and the second transmission lead screw 2221 can be arranged according to the spatial size in the working environment and the layout structure of other adjacent devices. Specifically, the first transmission lead screw 2121 and the second transmission lead screw 2221 can be coaxially arranged or arranged in parallel. The movement control of the first transmission lead screw 2121 and the second transmission lead screw 2221 can be achieved by one drive motor 31, and the structure is relatively compact. Whether the first transmission lead screw 2121 and the second transmission lead screw 2221 are coaxially arranged or arranged in parallel, the first piston mechanism 212 and the second piston mechanism 222 can be in different working states simultaneously. Only the axial directions of the first storage cavity 211 and the second storage cavity 221 need to be adjusted adaptively.

[0042] Specifically, in one embodiment, the first transmission lead screw 2121 and the second transmission lead screw 2221 have opposite helix directions and are parallel to each other. The first storage cavity 211 and the second storage cavity 221 are arranged side by side. This arrangement is relatively compact, occupies very little lateral space, and is convenient for identifying the current working states of the first storage cavity 211 and the second storage cavity 221 through the movement directions of the first transmission lead screw 2121 and the second transmission lead screw 2221, so that quick judgment and maintenance can be carried out when a fault occurs during the working process. When the first transmission lead screw 2121 and the second transmission lead screw 2221 rotate simultaneously, due to their opposite helix directions, the movement directions of the first piston mechanism 212 and the second piston mechanism 222 are opposite, so that the first storage cavity 211 and the second storage cavity 221 can be in different working states.

[0043] In one embodiment, the driving assembly 3 further includes a transmission gearbox 32. The input shaft 321 of the transmission gearbox 32 is connected to the output end of the driving motor 31. The transmission gearbox 32 further includes two parallel output shafts 322. The two output shafts 322 are respectively drivingly connected to the first transmission lead screw 2121 and the second transmission lead screw 2221. The input shaft 321 is drivingly connected to the two output shafts 322 to make the two output shafts 322 rotate in opposite directions simultaneously. Optionally, the transmission gearbox 32 is a reduction gearbox. Through the meshing of multiple sets of reduction gear sets, on the one hand, the rotation of the output end of the driving motor 31 is respectively transmitted to the two output shafts 322, and the rotation directions of the two output shafts 322 are made opposite. At the same time, the high-speed and low-torque power of the driving motor 31 can be converted into the low-speed and high-torque power of the first transmission lead screw 2121 and the second transmission lead screw 2221 to ensure a relatively high working pressure of the first material cylinder 21 and the second material cylinder 22 and meet the requirements of the injection pressure. The specific structure of the transmission gearbox 32 is not limited in this embodiment.

[0044] In one embodiment, the continuous injection device further includes a support frame 4. The first material cylinder 21 and the second material cylinder 22 are detachably connected to the support frame 4. The support frame 4 is used to provide support for the feeding assembly 1, the injection assembly 2, and the driving assembly 3. The first transmission lead screw 2121 and the second transmission lead screw 2221 reciprocate in the height direction of the support frame 4. The transmission gearbox 32 is arranged at the top of the support frame 4. The first transmission lead screw 2121 and the second transmission lead screw 2221 are both perpendicular to the output shaft 322. This arrangement is relatively compact and suitable for working conditions with limited working space. The driving assembly 3 further includes a first transmission mechanism 33 and a second transmission mechanism 34. The first transmission mechanism 33 is respectively connected to one of the two output shafts 322 and the first transmission lead screw 2121. The second transmission mechanism 34 is respectively connected to the other of the two output shafts 322 and the second transmission lead screw 2221. The first transmission mechanism 33 and the second transmission mechanism 34 are both used to convert horizontal rotation into vertical rotation.

[0045] Specifically, in one embodiment, the first transmission mechanism 33 includes a first worm reducer 331 and a first transmission gear set 332. The first transmission gear set 332 is respectively meshed and connected to the first worm reducer 331 and the output shaft 322, and the first worm reducer 331 is connected to the first transmission lead screw 2121. Similarly, the second transmission mechanism 34 includes a second worm reducer 341 and a second transmission gear set 342. The second transmission gear set 342 is respectively meshed and connected to the second worm reducer 341 and the output shaft 322, and the second worm reducer 341 is connected to the second transmission lead screw 2221. Through the above-mentioned first transmission mechanism 33 and second transmission mechanism 34, not only can the horizontal rotation of the output shaft 322 be converted into the vertical rotation of the first transmission lead screw 2121 and the second transmission lead screw 2221, but also the rotational speed can be reduced by the first worm reducer 331 and the second worm reducer 341 to increase the effect of transmitting torque.

[0046] In one embodiment, multiple sets of the feeding assembly 1 and the injection assembly 2 are provided, as Figure 2 shown. The multiple sets of feeding assemblies 1 and the multiple sets of injection assemblies 2 correspond one by one, and the multiple sets of injection assemblies 2 are arranged at intervals along the length direction of the support frame 4. In this way, multiple sets of simultaneous injections can be achieved on one support frame 4, further improving the production efficiency.

[0047] In one embodiment, the injection assembly 2 includes two first one-way valves and two second one-way valves (not shown in the figure). The two first one-way valves are respectively arranged at the outlet and the inlet of the first storage cavity 211. The first one-way valve is used to selectively connect the first storage cavity 211 to the feeding assembly 1 or the injection output pipe 23. When the first storage cavity 211 is in the storage state, the first one-way valve at the outlet is closed, while the first one-way valve at the inlet is open. Correspondingly, when the first storage cavity 211 is in the injection state, the first one-way valve at the outlet is open, while the first one-way valve at the inlet is closed. In this way, it can be ensured that the storage state and the injection state will not be confused, and the one-way fluidity of the injection material can be ensured, avoiding the backflow of the material in the first storage cavity 211 to the feeding assembly 1; it also ensures that when the first storage cavity 211 is in the injection state, the injection material in the feeding assembly 1 will only flow to the second storage cavity 221.

[0048] Similarly, two second one-way valves are respectively arranged at the outlet and the inlet of the second storage cavity 221. The second one-way valve is used to selectively connect the second storage cavity 221 to the feeding assembly 1 or the injection output pipe 23. When the second storage cavity 221 is in the material storage state, the second one-way valve at the outlet is closed, while the second one-way valve at the inlet is open. Correspondingly, when the second storage cavity 221 is in the injection state, the second one-way valve at the outlet is open, while the second one-way valve at the inlet is closed. This can ensure that the material storage state and the injection state will not be confused, and ensure the one-way fluidity of the injection material, avoiding the backflow of the material in the second storage cavity 221 to the feeding assembly 1; it also ensures that when the second storage cavity 221 is in the injection state, the injection material in the feeding assembly 1 will only flow to the first storage cavity 211.

[0049] An embodiment of the present invention also provides a high-pressure foaming device, which includes the above-mentioned continuous injection device. The high-pressure foaming device further includes a stirring motor 100. The feeding assembly 1 of the continuous injection device includes a material kettle 11. The stirring motor 100 is connected to the material kettle 11 and is used to stir the injection material in the material kettle 11. When the injection material contains a reinforcing body, the stirring motor 100 can improve the uniformity of the injection material. The continuous injection device has a first cylinder 21 and a second cylinder 22. The first storage cavity 211 and the second storage cavity 221 can always perform an injection action and a material storage action respectively, greatly shortening the process time and improving the production efficiency; the first piston mechanism 212 and the second piston mechanism 222 can make the first cylinder 21 and the second cylinder 22 have a relatively high working pressure, so as to realize high-pressure injection, meet the process parameter requirements of the high-pressure foaming device, ensure that the performance of the polyurethane meets the use requirements, and avoid residual injection material in the first storage cavity 211 and the second storage cavity 221.

[0050] In one embodiment, the high-pressure foaming device further includes a mixing assembly. The mixing assembly includes a mixing head and a mixed material mechanism connected to each other. The mixed material mechanism is used to provide mixed materials, and the mixing head is connected to the injection output pipe 23 and is used to mix the mixed materials and the injection materials.

[0051] Furthermore, the high-pressure foaming device further includes a filter 200. The filter 200 is arranged between the feeding assembly 1 and the injection assembly 2 and is used to filter the injection material. Preferably, the filter 200 is a constant-temperature filtering device, which can not only screen out large-diameter particulate matters agglomerated in the injection material, but also keep the injection material in a relatively stable temperature range.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. Continuous injection device, characterized in that, it comprises: a feeding component (1) for providing injection materials; an injection component (2) including a first material cylinder (21), a second material cylinder (22) and an injection output pipe (23). The feeding port of the injection output pipe (23) is connected to both the first material cylinder (21) and the second material cylinder (22). The first material cylinder (21) includes a first storage cavity (211) and a first piston mechanism (212). The outlet of the first storage cavity (211) communicates with the injection output pipe (23), and the inlet of the first storage cavity (211) communicates with the feeding component (1). The first piston mechanism (212) is reciprocally movably arranged in the first storage cavity (211) to enable the first storage cavity (211) to switch between a storage state and an injection state. The second material cylinder (22) includes a second storage cavity (221) and a second piston mechanism (222). The outlet of the second storage cavity (221) communicates with the injection output pipe (23), and the inlet of the second storage cavity (221) communicates with the feeding component (1). The second piston mechanism (222) is reciprocally movably arranged in the second storage cavity (221) to enable the second storage cavity (221) to switch between a storage state and an injection state; a driving component (3) drivingly connected to the injection component (2), the driving component (3) simultaneously driving the first piston mechanism (212) and the second piston mechanism (222) to act so that the first storage cavity (211) and the second storage cavity (221) are in different working states.

2. The continuous injection device according to claim 1, characterized in that, the first piston mechanism (212) includes a first transmission screw rod (2121), the second piston mechanism (222) includes a second transmission screw rod (2221), the first transmission screw rod (2121) and the second transmission screw rod (2221) are coaxially arranged or arranged in parallel. The driving component (3) includes a driving motor (31), the driving motor (31) is drivingly connected to the first transmission screw rod (2121) and the second transmission screw rod (2221), and the driving motor (31) is used to simultaneously rotate the first transmission screw rod (2121) and the second transmission screw rod (2221) to drive the first piston mechanism (212) and the second piston mechanism (222) to move simultaneously.

3. The continuous injection device according to claim 2, characterized in that, The first drive lead screw (2121) and the second drive lead screw (2221) have opposite helix directions and are parallel to each other. The first storage chamber (211) and the second storage chamber (221) are arranged in parallel. When the first drive lead screw (2121) and the second drive lead screw (2221) rotate simultaneously, the moving directions of the first piston mechanism (212) and the second piston mechanism (222) are opposite, so that the first storage chamber (211) and the second storage chamber (221) are in different working states.

4. The continuous injection device according to claim 3, wherein, the drive assembly (3) further includes a transmission gearbox (32). The input shaft (321) of the transmission gearbox (32) is connected to the output end of the drive motor (31). The transmission gearbox (32) further includes two parallel output shafts (322). The two output shafts (322) are respectively drivingly connected to the first drive lead screw (2121) and the second drive lead screw (2221). The input shaft (321) is drivingly connected to the two output shafts (322) so that the two output shafts (322) rotate in opposite directions simultaneously.

5. The continuous injection device according to claim 4, wherein, the continuous injection device further includes a support frame (4). The first material cylinder (21) and the second material cylinder (22) are detachably connected to the support frame (4). The first drive lead screw (2121) and the second drive lead screw (2221) reciprocate in the height direction of the support frame (4). The transmission gearbox (32) is arranged at the top of the support frame (4). The first drive lead screw (2121) and the second drive lead screw (2221) are both perpendicular to the output shafts (322). The drive assembly (3) further includes a first transmission mechanism (33) and a second transmission mechanism (34). The first transmission mechanism (33) is respectively connected to one of the two output shafts (322) and the first drive lead screw (2121). The second transmission mechanism (34) is respectively connected to the other of the two output shafts (322) and the second drive lead screw (2221). The first transmission mechanism (33) and the second transmission mechanism (34) are both used to convert horizontal rotation into vertical rotation.

6. The continuous injection device according to claim 5, wherein, The first transmission mechanism (33) includes a first worm reducer (331) and a first transmission gear set (332). The first transmission gear set (332) is respectively meshed and connected to the first worm reducer (331) and the output shaft (322), and the first worm reducer (331) is connected to the first transmission lead screw (2121). The second transmission mechanism (34) includes a second worm reducer (341) and a second transmission gear set (342). The second transmission gear set (342) is respectively meshed and connected to the second worm reducer (341) and the output shaft (322), and the second worm reducer (341) is connected to the second transmission lead screw (2221).

7. The continuous injection device according to claim 5, wherein, the feeding assembly (1) and the injection assembly (2) are both provided with multiple groups. The multiple groups of feeding assemblies (1) and the multiple groups of injection assemblies (2) correspond one by one, and the multiple groups of injection assemblies (2) are arranged at intervals along the length direction of the support frame (4).

8. The continuous injection device according to any one of claims 1-7, wherein, the injection assembly (2) includes two first one-way valves and two second one-way valves. The two first one-way valves are respectively arranged at the outlet and the inlet of the first storage cavity (211), and the first one-way valve is used to selectively connect the first storage cavity (211) to the feeding assembly (1) or the injection output pipe (23). The two second one-way valves are respectively arranged at the outlet and the inlet of the second storage cavity (221), and the second one-way valve is used to selectively connect the second storage cavity (221) to the feeding assembly (1) or the injection output pipe (23).

9. A high-pressure foaming device, wherein, it includes the continuous injection device according to any one of claims 1-8. The high-pressure foaming device further includes a stirring motor (100). The feeding assembly (1) of the continuous injection device includes a material kettle (11), and the stirring motor (100) is connected to the material kettle (11) for stirring the injection material in the material kettle (11).

10. The high-pressure foaming device according to claim 9, wherein, the high-pressure foaming device further includes a mixing assembly. The mixing assembly includes a mixing head and a mixing material mechanism connected to each other. The mixing material mechanism is used to provide mixing materials, and the mixing head is connected to the injection output pipe (23). The mixing head is used to mix the mixing materials and the injection material; and / or, the high-pressure foaming device further includes a filter (200). The filter (200) is arranged between the feeding assembly (1) and the injection assembly (2), and the filter (200) is used to filter the injection material.

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