Polyurethane foam joint mixture filling equipment and filling method

Abstract

The invention belongs to the technical field of packaging machinery, and particularly relates to polyurethane foam joint mixture filling equipment and a filling method.The polyurethane foam joint mixture filling equipment comprises a carrier assembly, a moving assembly is arranged on the carrier assembly, and a filling assembly is arranged on the moving assembly; the carrier assembly comprises a workbench, a center control module is arranged on one side of the workbench, a stock bin is arranged on one side of the upper end face of the workbench, and the stock bin communicates with a conveying pipe. The moving assembly comprises a sliding rail, a plurality of sliding grooves are formed in one side of the sliding rail, a moving plate is arranged in the sliding grooves in a sealed and sliding connection mode, and a moving hydraulic rod is arranged at the bottom of the moving plate. The filling equipment is high in filling precision, good in product quality and capable of conducting fixed-point detection and removal on internal impurities, adjusting the volume of a filling joint mixture raw material in unit time, detecting the viscosity of the filling joint mixture raw material at different working temperatures and correspondingly adjusting the volume of the filling joint mixture raw material in unit time.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging machinery, in particular to polyurethane foam sealant filling equipment and a filling method. Background Art

[0002] Polyurethane foam sealant is a single-component, moisture-curing, multi-purpose polyurethane foam filling elastic sealing material. It has strong bonding strength and has waterproof, heat-insulating, and sound-insulating functions after curing. It is widely used in construction, automobiles, electrical appliances and other fields.

[0003] A Chinese patent application with application number 202323551383.5 discloses a polyurethane foam sealant filling device, including a conveyor belt, a base, a silo, an arc-shaped electric pressure rod, etc. A conveyor belt is provided in the middle of the base, and two silos are symmetrically connected to the front and rear parts of the base. The silos are interconnected, and three arc-shaped electric pressure rods are connected to the upper side of the silos. The sealant is easy to dry and harden after contact with the air. The filling device isolates the air by setting a one-way door to automatically open and close. It cannot completely solve the problem of impurities generated after the sealant dries and hardens, affecting the stability of product quality.

[0004] During the filling process of polyurethane foam sealant, the raw materials in the filling head are easily exposed to air, causing the raw materials to dry and harden on the inner wall of the filling head. The hardened impurities will accumulate and clog around the filling head, thereby affecting the stability of the filling. In addition, if impurities are mixed into the filling bottle, it will affect the uniformity and quality of the product.

[0005] In addition, different batches of filling bottles have different requirements for filling raw materials. However, the filling head cannot adjust the volume of filling raw materials per unit time accordingly based on this difference, which affects the filling accuracy.

[0006] At the same time, the viscosity of the sealant raw materials varies at different temperatures. When filling high-viscosity raw materials, the filling speed is slow, which makes it impossible to complete the expected filling volume within the specified time, resulting in insufficient filling; while the filling speed of low-viscosity raw materials is fast, which easily leads to excessive filling within the specified time. These situations will further have an adverse effect on the filling accuracy. Summary of the invention

[0007] In view of the above problems, the present invention provides a polyurethane foam sealant filling device and a filling method to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a polyurethane foam sealant filling device, comprising a carrier component, a moving component is provided on the carrier component, and a filling component is provided on the moving component; The carrier assembly includes a workbench, a central control module is provided on one side of the workbench, a material bin is provided on one side of the upper end surface of the workbench, and a material conveying pipe is connected to the material bin; The moving assembly comprises a slide rail, a plurality of slide grooves are provided on one side of the slide rail, a moving plate is provided in a sealing and sliding connection inside the slide groove, a moving hydraulic rod is provided at the bottom of the moving plate, and the bottom of the moving hydraulic rod is fixedly connected to the workbench; The filling assembly comprises a material storage cavity, one end of the material storage cavity is connected to a transfer cavity, and the end of the transfer cavity away from the material storage cavity is connected to a discharge cavity, and the discharge cavity is a truncated cone-shaped hollow cavity structure with openings at both ends.

[0009] Preferably, a conveyor belt is rotatably connected to the workbench, and a plurality of filling bottles are evenly arranged on the conveyor belt.

[0010] Preferably, the end of the movable plate away from the slide rail is connected to a clamping mechanism, the inner wall of the clamping mechanism and the outer wall of the storage cavity are in conflict with each other, and a docking hole is opened on the top of the storage cavity, and the docking hole is connected to the material conveying pipe.

[0011] Preferably, a sliding cylinder is sealingly and slidingly connected inside the transfer chamber, and the sliding cylinder is a cylindrical hollow cavity structure with an open lower end surface, and the outer diameter of the sliding cylinder is smaller than the inner diameter of the storage chamber.

[0012] Preferably, a rotating rod is rotatably connected to the central axis of the storage chamber, one end of the rotating rod passes through the top of the storage chamber and is connected to a rotating motor, and the other end passes through the top of the sliding cylinder and is fixedly connected to a connecting rod, and the cross-section of the connecting rod is set to a "▽"-shaped structure, and multiple groups of cleaning components are fixedly connected to the end face of the connecting rod close to the inner wall of the transfer chamber.

[0013] Preferably, an adjusting hydraulic rod is provided on the inner top of the material storage chamber, the output end of the adjusting hydraulic rod is fixedly connected to the top of the sliding cylinder, and a plurality of connecting holes are evenly opened on the side wall of the sliding cylinder.

[0014] Preferably, the cleaning assembly includes a fixed plate, one side of the fixed plate is fixedly connected to the connecting rod, and the other side is fixedly connected to a limiting plate. The end of the limiting plate away from the fixed plate is slidably connected to an elastic scraper through a return spring, and the end of the elastic scraper away from the limiting plate is in contact with the inner wall of the discharge chamber.

[0015] Preferably, two groups of pneumatic push rods are provided on a side of the fixed plate away from the limiting plate, and the output ends of the two groups of pneumatic push rods are connected to a connecting plate, and the connecting plate is rotatably connected to a scraper through a torsion spring.

[0016] The present invention also discloses a filling method of polyurethane foam sealant filling equipment, comprising the following steps: Step 1: Adjust the output end of the hydraulic rod to start and control the sliding cylinder to slide up and down in the transfer chamber to clean the impurities on the inner wall of the transfer chamber; The central control module controls the rotation motor to start, and drives the cleaning component to rotate synchronously. When the compression amount of the return spring on the elastic scraper increases, the output ends of the two groups of pneumatic push rods of the cleaning component are controlled to extend, so that the scraper hits the inner wall of the discharge chamber. During the rotation of the rotation motor, the scraper is driven to remove impurities at a fixed point. Step 2: When the same batch of filling bottles has a large demand for the filler raw material, the hydraulic rod is adjusted to start and the output end is shortened, the amount of blockage of the connecting hole by the inner wall of the transfer chamber is reduced, and the flow rate of the filler raw material along the connecting hole is increased; When the demand for the filler material of another batch of filling bottles decreases, the hydraulic rod is adjusted to start and the output end is extended, the blocking amount of the connecting hole by the inner wall of the transfer chamber becomes larger, and the flow amount of the filler material along the connecting hole is reduced; Step 3: The filling bottle moves forward with the operation of the conveyor belt. When the filling bottle reaches the predetermined position directly below the filling assembly, the silo starts to convey the sealant raw material, and the sealant raw material flows through the feed pipe, the storage cavity, the connecting hole, the transfer cavity and the discharge cavity in sequence to start filling the filling bottle; Step 4: Start the rotating motor to reverse. When the compression of the torsion spring on the scraper exceeds the preset viscosity value, the control adjustment hydraulic rod is started and the output end is shortened, and the blockage of the connecting hole by the inner wall of the transfer chamber is reduced; When the compression amount of the torsion spring on the scraper is lower than the preset viscosity value, the control adjustment hydraulic rod is started and the output end is extended, and the blockage amount of the connecting hole by the inner wall of the transfer chamber increases.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present application sets up the cooperation between the sliding cylinder and the transfer chamber and other components. The sliding cylinder slides up and down in a sealed manner inside the transfer chamber to effectively clean the impurities on the inner wall of the transfer chamber. At the same time, according to the difference in the demand for the sealant raw material of different batches of filling bottles, the blockage amount of the connecting hole by the inner wall of the transfer chamber is adjusted accordingly, thereby realizing the adjustment of the volume of the sealant raw material filled per unit time and improving the filling accuracy.

[0018] 2. The present application realizes fixed-point detection of impurities on the inner wall of the discharge chamber by setting up the mutual cooperation of components such as an elastic scraper and a scraper, and changes the compression amount of the return spring on the elastic scraper, and controls the movement of the scraper at the height where the impurities are located, so that the scraper can remove impurities at a fixed point, avoid impurities blocking the bottom opening of the discharge chamber, prevent impurities from mixing into the filling bottle during filling, and improve product quality.

[0019] 3. The present application sets a scraper, an adjusting hydraulic rod, a sliding cylinder and other components to cooperate with each other, and utilizes the change in the compression of the torsion spring on the scraper to detect the viscosity of the filler raw material at different working temperatures. Then, the difference between the compression of the torsion spring and the preset viscosity value is obtained by calculation. The length of movement of the output end of the adjusting hydraulic rod is controlled according to the difference, and the amount of blockage of the connecting hole by the inner wall of the transfer chamber is correspondingly adjusted, thereby ensuring that the volume of the filler raw material filled per unit time is within a normal range, further improving the filling accuracy and stability.

[0020] 4. The present application sets the cooperation of the sliding cylinder, transfer chamber and discharge chamber and other components, uses the sliding cylinder to quickly compress the internal volume of the transfer chamber, so that the filler material in the transfer chamber and the discharge chamber falls quickly, and the sliding cylinder compresses the internal volume of the storage chamber, the space in the transfer chamber and the discharge chamber increases, and the pressure decreases, so that the filler material remaining on the inner wall of the discharge chamber will not fall, thereby improving the filling accuracy, and by setting an adjustable hydraulic rod to control the sliding cylinder to make periodic reciprocating motion in the storage chamber and the transfer chamber, the number of times the solenoid valve is opened and closed is reduced, thereby effectively accelerating the overall filling efficiency of the filling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle; Figure 3 for Figure 2 The enlarged structural diagram of part A in the middle; Figure 4 It is a schematic diagram of the structure of the mobile component of the present invention; Figure 5 It is a schematic diagram of the internal structure of the filling component of the present invention; Figure 6 It is a schematic diagram of the position relationship between the cleaning assembly and the connecting rod of the present invention; Figure 7 It is a schematic diagram of the structure of the cleaning component of the present invention.

[0022] In the figure: 1. Carrier assembly; 101. Workbench; 102. Central control module; 103. Silo; 104. Feed pipe; 105. Conveyor belt; 106. Filling bottle; 2. Moving assembly; 201. Slide rail; 202. Slide trough; 203. Moving plate; 204. Moving hydraulic rod; 205. Clamping mechanism; 3. Filling assembly; 301. Storage chamber; 302. Transfer chamber; 303. Sliding cylinder; 304. Rotating rod; 305. Rotating motor; 306. Connecting rod; 307. Cleaning assembly; 3071. Fixed plate; 3072. Limiting plate; 3073. Elastic scraper; 3074. Pneumatic push rod; 3075. Connecting plate; 3076. Scraper; 308. Adjusting hydraulic rod; 309. Connecting hole; 310. Docking hole; 311. Discharging chamber. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: like Figure 1 As shown, a polyurethane foam sealant filling device includes a carrier component 1, which is the supporting part of the filling device to ensure the stability of the filling process. A moving component 2 is provided on the carrier component 1, and the height of the filling component 3 can be adjusted by the moving component 2. The moving component 2 is provided with a filling component 3 for controlling the output of the sealant raw material.

[0025] Specifically, Figure 2 As shown, the carrier assembly 1 includes a workbench 101, a central control module 102 is provided on one side of the workbench 101, and the central control module 102 is electrically connected to each electrical component to realize the monitoring and control function of the status of each electrical component. A silo 103 is provided on one side of the upper end surface of the workbench 101, and a feeding pipe 104 is connected to the silo 103. The filler raw material inside the silo 103 is transported to the inside of the filling assembly 3 through the feeding pipe 104. A conveyor belt 105 is rotatably connected to the middle position of the top of the workbench 101, and a plurality of filling bottles 106 are evenly arranged on the conveyor belt 105. When in use, the staff places the filling bottle 106 on the conveyor belt 105, and the filling bottle 106 is transported forward with the movement of the conveyor belt 105. When the filling bottle 106 is transported to the predetermined position directly below the filling assembly 3, the conveyor belt 105 stops working to prepare for the subsequent filling operation.

[0026] In the filling production line, the filling bottles 106 usually move periodically on the conveyor belt 105, which requires that the height of the filling assembly 3 can be accurately adjusted in dynamic conditions, such as Figure 3 - Figure 4 As shown, the moving assembly 2 includes a slide rail 201, and a plurality of slide grooves 202 are provided on one side of the slide rail 201. The slide groove 202 is sealed and slidably connected with a moving plate 203. The end of the moving plate 203 away from the slide rail 201 is connected with a clamping mechanism 205. The inner wall of the clamping mechanism 205 and the outer wall of the storage chamber 301 are mutually in conflict. The moving plate 203 can move up and down inside the slide groove 202. At the same time, the clamping mechanism 205 drives the filling assembly 3 to move synchronously with the moving plate 203, further improving the efficiency of the filling of the caulking agent raw material. A moving hydraulic rod 204 is provided at the bottom of the moving plate 203, and the bottom of the moving hydraulic rod 204 is fixedly connected to the workbench 101. When the output end of the moving hydraulic rod 204 is started, the moving plate 203 can be controlled to move up and down, thereby accurately adjusting the height of the filling assembly 3.

[0027] Different batches of filling bottles 106 have different requirements for the filler raw material. The filling head cannot adjust the volume of the filler raw material filled per unit time accordingly according to this difference, thereby affecting the filling accuracy. Figure 5 - Figure 6As shown, the filling component 3 includes a storage chamber 301, and a docking hole 310 is opened on the top of the storage chamber 301, and the docking hole 310 is connected to the feeding pipe 104. The filler raw material flows into the storage chamber 301 through the feeding pipe 104 and the docking hole 310, wherein the setting of the storage chamber 301 is convenient for transferring and storing the filler raw material, and one end of the storage chamber 301 is connected to the transfer chamber 302, and the end of the transfer chamber 302 away from the storage chamber 301 is connected to the discharge chamber 311, and the discharge chamber 311 is a truncated cone-shaped hollow cavity structure with openings at both ends, and a solenoid valve for controlling the flow of the filler raw material is provided at the bottom opening of the discharge chamber 311. The transfer chamber 302 is sealed and slidably connected with a sliding cylinder 303. The sliding cylinder 303 is a cylindrical hollow cavity structure with an opening at the lower end face, and the outer diameter of the sliding cylinder 303 is smaller than the inner diameter of the storage chamber 301. At the same time, an adjusting hydraulic rod 308 is provided on the inner top of the storage chamber 301. The output end of the adjusting hydraulic rod 308 is fixedly connected to the top of the sliding cylinder 303. A plurality of connecting holes 309 of equal diameter are evenly opened on the side wall of the sliding cylinder 303. The filler raw material between the storage chamber 301 and the sliding cylinder 303 falls into the transfer chamber 302 and the discharge chamber 311 through the connecting holes 309. After passing through the connecting holes 309, the filler raw material becomes evenly dispersed and enters the filling bottle 106, preventing large particles from entering the filling bottle 106, thereby ensuring a good mixing effect between different filler raw materials in the future, thereby improving the quality of the product. When in use, the output end of the hydraulic rod 308 is adjusted to start and control the sliding cylinder 303 to slide up and down in a sealed manner inside the transfer chamber 302, and the amount of blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 is correspondingly adjusted, thereby adjusting the volume of the filler raw material filled per unit time and improving the filling accuracy.

[0028] After the sealant raw material comes into contact with the air, it dries and hardens. The hardened impurities easily cause the bottom opening of the discharge chamber 311 to be blocked. At the same time, impurities mixed into the filling bottle 106 will affect the quality of the product, and then Figure 5 - Figure 7As shown, a rotating rod 304 is rotatably connected to the central axis of the material storage chamber 301, one end of the rotating rod 304 passes through the top of the material storage chamber 301 and is connected to a rotating motor 305, and the other end passes through the top of the sliding cylinder 303 and is fixedly connected to a connecting rod 306, the cross section of the connecting rod 306 is set to a "▽"-shaped structure, and multiple groups of cleaning components 307 are fixedly connected to the end surface of the connecting rod 306 close to the inner wall of the transfer chamber 302, and the multiple groups of cleaning components 307 are arranged in a linear array along the end surfaces of the connecting rod 306 on both sides close to the inner wall of the transfer chamber 302. The rotating motor 305 is started and drives the rotating rod 304 and the connecting rod 306 to rotate, and the rotation of the connecting rod 306 synchronously drives the cleaning component 307 to rotate, and the cleaning component 307 scrapes and cleans the inner wall of the discharge chamber 311. The cleaning assembly 307 includes a fixed plate 3071, one side of the fixed plate 3071 is fixedly connected to the connecting rod 306, and the other side is fixedly connected to a limiting plate 3072. The end of the limiting plate 3072 away from the fixed plate 3071 is slidably connected to an elastic scraper 3073 through a reset spring. The setting of the reset spring improves the elastic reset performance of the elastic scraper 3073. The end of the elastic scraper 3073 away from the limiting plate 3072 is in conflict with the inner wall of the discharge chamber 311. At the same time, two groups of pneumatic push rods 3074 are provided on the side of the fixed plate 3071 away from the limiting plate 3072. The output ends of the two groups of pneumatic push rods 3074 are connected to a connecting plate 3075. When the output ends of the two groups of pneumatic push rods 3074 are started, the connecting plate 3075 can be controlled to reciprocate. The connecting plate 3075 is connected to a scraper 3076 through a torsion spring. During the rotation of the cleaning component 307, the elastic scraper 3073 will compress the reset spring after contacting the impurities, and after the elastic scraper 3073 leaves the impurities, the reset spring will extend and cause the elastic scraper 3073 to contact the inner wall of the discharge chamber 311 again. When impurities are detected on the inner wall of the discharge chamber 311, the signal is transmitted to the central control module 102, and the central control module 102 controls the output ends of the two groups of pneumatic push rods 3074 to extend, and the impurities are removed by the scraper 3076. It should be noted that the scraper 3076 will compress the torsion spring after contacting the impurities, and the torsion spring begins to store elastic potential energy, and when the compression of the torsion spring reaches the maximum value, the elastic potential energy of the torsion spring also reaches the peak value accordingly. Under the synergistic effect of the elastic potential energy of the torsion spring and the extrusion force of the scraper 3076, the removal effect of impurities is further improved.

[0029] When the filling equipment is actually used, first, the impurities on the inner wall of the transfer chamber 302 are cleaned by the sliding cylinder 303, and the cleaning steps are as follows: the central control module 102 controls the adjustment of the hydraulic rod 308 to start and the output end to extend, driving the sliding cylinder 303 to approach the discharge chamber 311, until the bottom of the sliding cylinder 303 and the top of the discharge chamber 311 collide with each other, and the sliding cylinder 303 clears the impurities on the inner wall of the transfer chamber 302 during the sliding process, and the cleaned impurities are cleared out of the filling component 3 through the discharge chamber 311 due to the action of gravity; then the hydraulic rod 308 is controlled to shorten, driving the sliding cylinder 303 away from the discharge chamber 311, until the bottom of the sliding cylinder 303 and the top of the transfer chamber 302 collide with each other, and the impurities on the inner wall of the transfer chamber 302 are further cleaned. In this cycle, the sliding cylinder 303 can effectively clean the impurities on the inner wall of the transfer chamber 302 during the reciprocating movement. When the staff observes that no impurities are discharged from the discharge chamber 311, it means that the inner wall of the transfer chamber 302 has been cleaned. At this time, the hydraulic rod 308 is adjusted to stop working.

[0030] Secondly, the change in the compression amount of the reset spring of the elastic scraper 3073 is used to detect whether there are impurities on the inner wall of the discharge chamber 311. Specifically, the central control module 102 controls the rotating motor 305 to start forward rotation, driving the rotating rod 304 and the connecting rod 306 to rotate, and the rotation of the connecting rod 306 synchronously drives the cleaning component 307 to rotate. During the process of the cleaning component 307 completing one rotation, the compression amount of the reset spring on the elastic scraper 3073 does not change, that is, the elastic scraper 3073 always contacts the inner wall of the discharge chamber 311, indicating that there are no impurities on the inner wall of the discharge chamber 311 at present; when the compression amount of the reset spring on the elastic scraper 3073 increases, it means that the elastic scraper 3073 passes through the position where there are impurities on the inner wall of the discharge chamber 311, thereby causing the compression amount of the reset spring to increase; when impurities are detected on the inner wall of the discharge chamber 311, the signal is transmitted to the central control module 102 to facilitate the next step of removing impurities. At the same time, since the cleaning components 307 are arranged in a linear array on the end surfaces of both sides of the connecting rod 306, and two adjacent groups of cleaning components 307 conflict with each other, fixed-point detection of impurities on the inner wall of the discharge chamber 311 can be achieved.

[0031] Then, when the central control module 102 receives a signal that there is an impurity at a certain position on the inner wall of the discharge chamber 311, the central control module 102 controls the output ends of the two groups of pneumatic push rods 3074 of the cleaning component 307 at the height of the position to extend, causing the scraper 3076 to contact the inner wall of the discharge chamber 311, and the rotating motor 305 drives the scraper 3076 to perform targeted cleaning of impurities at the position during rotation, until the compression amount of the reset spring of the cleaning component 307 no longer changes, indicating that the inner wall of the discharge chamber 311 has been cleaned. At this time, the output end of the pneumatic push rod 3074 is controlled to shorten, and the scraper 3076 is away from the inner wall of the discharge chamber 311, and the impurity cleaning work on the inner wall of the discharge chamber 311 is stopped. It should be noted that the hardness of the scraper 3076 is much smaller than the hardness of the inner wall of the discharge chamber 311, so the scraper 3076 will not cause wear and damage to the inner wall of the discharge chamber 311.

[0032] Next, the staff adjusts the volume of the filler material filled per unit time by using the cooperation of the sliding cylinder 303 and the adjusting hydraulic rod 308 according to the difference in the demand for the filler material of different batches of filling bottles 106. Specifically, when the demand for the filler material of the same batch of filling bottles 106 is large, the central control module 102 controls the adjusting hydraulic rod 308 to start and shorten the output end, driving the sliding cylinder 303 away from the transfer chamber 302, and the sliding cylinder 303 simultaneously drives the connecting hole 309 to move, and the blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 is reduced. At this time, the flow rate of the filler material along the connecting hole 309 increases, and the flow rate per unit time is increased. The volume of the filler raw material from the inner storage chamber 301 that falls into the transfer chamber 302 and the discharge chamber 311 through the connecting hole 309 increases; similarly, when the demand for the filler raw material from another batch of filling bottles 106 decreases, the central control module 102 controls the adjustment of the hydraulic rod 308 to start and the output end extends, driving the sliding cylinder 303 close to the transfer chamber 302, and the sliding cylinder 303 simultaneously drives the connecting hole 309 to move, and the amount of blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 increases. At this time, the flow rate of the filler raw material along the connecting hole 309 decreases, and the volume of the filler raw material from the storage chamber 301 that falls into the transfer chamber 302 and the discharge chamber 311 through the connecting hole 309 per unit time decreases. The above process improves the filling accuracy of the filling component 3, and at the same time, makes the filler raw material evenly dispersed, ensures the subsequent mixing effect between different filler raw materials, and improves the quality of the product.

[0033] Finally, the staff places the filling bottle 106 on the conveyor belt 105, and the filling bottle 106 moves forward with the operation of the conveyor belt 105. When the filling bottle 106 reaches the predetermined position directly below the filling component 3, the conveyor belt 105 stops running. At this time, the filling component 3 is controlled to move downward until the bottom opening of the discharge chamber 311 is close to the top opening of the filling bottle 106, and the solenoid valve at the bottom opening of the discharge chamber 311 is controlled to open. Then the silo 103 starts and starts to convey the filler raw material. The filler raw material flows through the feed pipe 104, the storage chamber 301, the connecting hole 309, the transfer chamber 302 and the discharge chamber 311 in turn to fill the filling bottle 106. After a certain period of filling, when the filler raw material inside the filling bottle 106 reaches the required filling amount, the solenoid valve is controlled to close, thereby completing the filling work of the filling bottle 106.

[0034] During the above process, the sliding cylinder 303 is used to slide up and down in a sealed manner inside the transfer chamber 302 to effectively clean the impurities on the inner wall of the transfer chamber 302. At the same time, according to the difference in the demand for the filler raw material of different batches of filling bottles 106, the blockage amount of the inner wall of the transfer chamber 302 to the connecting hole 309 is adjusted accordingly, thereby realizing the adjustment of the volume of the filler raw material filled per unit time and improving the filling accuracy. In addition, the filler raw material becomes uniformly dispersed after passing through the connecting hole 309, ensuring a good mixing effect between subsequent different filler raw materials, thereby improving the product quality; the compression amount of the reset spring on the elastic scraper 3073 changes, realizing fixed-point detection of impurities on the inner wall of the discharge chamber 311, and controlling the movement of the scraper 3076 at the height of the impurities, so that the scraper 3076 can perform fixed-point removal of impurities to avoid impurities blocking the bottom opening of the discharge chamber 311 and preventing impurities from mixing into the filling bottle 106 during filling, thereby improving the quality of the product.

[0035] During the filling process, the viscosity of the caulking agent raw material will be affected by the temperature change of the working environment. For example, in winter when the indoor temperature is low, the viscosity of the caulking agent raw material will increase, causing the circulation speed of the caulking agent raw material to slow down, so that the expected filling volume cannot be completed within the given time. On the contrary, in summer when the indoor temperature is high, the viscosity of the caulking agent raw material will decrease, causing the circulation speed of the caulking agent raw material to speed up, resulting in excessive filling within the given time; During the rotation of the cleaning component 307, the viscosity of the current sealant raw material can be identified according to the change in the compression amount of the torsion spring on the scraper 3076. When the compression amount of the torsion spring exceeds or is less than the preset viscosity value, it indicates that the viscosity of the sealant raw material has a greater impact on the circulation speed, specifically: like Figure 5 - Figure 7As shown, the rotating motor 305 is started to reverse, driving the rotating rod 304 and the connecting rod 306 to rotate. The rotation of the connecting rod 306 synchronously drives the cleaning component 307 to rotate. In this process, the scraper 3076 is mainly affected by the centrifugal force and the friction force when it contacts the sealant raw material. The combined effect of these two forces causes the torsion spring to be compressed, and the scraper 3076 rotates in the direction close to the elastic scraper 3073. The viscosity of the sealant raw material is proportional to the compression of the torsion spring on the scraper 3076, that is, the greater the viscosity of the sealant raw material, the greater the friction force on the scraper 3076, and the greater the compression of the torsion spring on the scraper 3076. The smaller the viscosity of the sealant raw material, the smaller the friction force on the scraper 3076, and the smaller the compression of the torsion spring on the scraper 3076.

[0036] Therefore, when the compression of the torsion spring on the scraper 3076 exceeds the preset viscosity value, it indicates that the friction force borne by the scraper 3076 is large, which in turn reflects that the viscosity of the filler raw material is large, resulting in a slower flow rate of the filled filler raw material. The signal is transmitted to the central control module 102, and then the difference between the compression of the torsion spring and the preset viscosity value is obtained by calculation. The central control module 102 controls the length of movement of the output end of the hydraulic rod 308 according to the difference, so that the blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 is reduced. At this time, the flow rate of the filler raw material along the connecting hole 309 increases, driving the volume of the filler raw material falling into the transfer chamber 302 and the discharge chamber 311 to increase, that is, the flow rate of the filler raw material in the transfer chamber 302 and the discharge chamber 311 becomes faster, thereby ensuring that the volume of the filler raw material filled per unit time is within a normal range, thereby improving the accuracy and stability of the filler raw material filling.

[0037] Similarly, when the compression of the torsion spring on the scraper 3076 is lower than the preset viscosity value, it indicates that the friction force borne by the scraper 3076 is small, which in turn reflects that the viscosity of the filler raw material is small, resulting in a faster circulation speed of the filled filler raw material. The signal is transmitted to the central control module 102, and then the difference between the compression of the torsion spring and the preset viscosity value is obtained by calculation. The central control module 102 controls the length of movement of the output end of the hydraulic rod 308 according to the difference, thereby increasing the amount of blockage of the connecting hole 309 by the inner wall of the transfer chamber 302. At this time, the flow rate of the filler raw material along the connecting hole 309 becomes smaller, driving the volume of the filler raw material falling into the transfer chamber 302 and the discharge chamber 311 to decrease, that is, the circulation speed of the filler raw material in the transfer chamber 302 and the discharge chamber 311 slows down, thereby ensuring that the volume of the filler raw material filled per unit time is within a normal range, further improving the accuracy and stability of the filler raw material filling.

[0038] It should be noted that, since the rotation speed of the rotating motor 305 is constant, the centrifugal force on the scraper 3076 remains unchanged; at the same time, the scraper 3076 is far away from the elastic scraper 3073, and when the scraper 3076 rotates in the direction close to the elastic scraper 3073, the scraper 3076 will not collide with the elastic scraper 3073, and thus will not affect the torsion spring on the scraper 3076 to detect the viscosity of the filler raw material.

[0039] In the above process, the compression amount of the torsion spring on the scraper 3076 is used to detect the viscosity of the filler raw material at different working temperatures in real time, and then the difference between the compression amount of the torsion spring and the preset viscosity value is calculated. The length of movement of the output end of the hydraulic rod 308 is controlled and adjusted according to the difference, and the amount of blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 is adjusted accordingly, so as to ensure that the volume of the filler raw material filled per unit time is within a normal range, further improving the filling accuracy and stability.

[0040] Embodiment 2: Based on the technical solution of the first embodiment, after the filling equipment completes the filling of the filling bottle 106, it is necessary to close the solenoid valve at the bottom opening of the discharge chamber 311, wait for the next filling bottle 106 to reach the predetermined position, and then open the solenoid valve to start a new round of filling operation. During the alternating filling of the two filling bottles 106, the solenoid valve is controlled to open and close, which will reduce the filling efficiency. At the same time, when the viscosity of the sealant raw material is relatively large, the filling operation is carried out only by the gravity of the sealant raw material itself, and the filling rate is low. Especially when facing large-volume purchase orders, it is difficult to meet the demand for fast filling, which greatly limits the production capacity of the filling equipment. The following technical solutions are proposed to solve the above technical problems.

[0041] First, the central control module 102 controls the hydraulic rod 308 to start and the output end extends, driving the sliding cylinder 303 to approach the discharge chamber 311, until the top of the sliding cylinder 303 and the top of the transfer chamber 302 collide with each other, and the connecting hole 309 is completely blocked by the inner wall of the transfer chamber 302, and the silo 103 starts and begins to transport the filler raw material. The filler raw material enters the storage chamber 301 after passing through the feeding pipe 104, and the filler raw material inside the storage chamber 301 gradually increases until the storage chamber 301 is filled. At this time, the volume of the filler raw material in the storage chamber 301 is slightly larger than the actual demand of a single filling bottle 106. It should be noted that when the filling equipment performs the first round of filling operation, a small amount of filler raw material will inevitably remain on the inner wall of the discharge chamber 311, so the volume of the filler raw material in the storage chamber 301 is set to be slightly larger than the actual demand of a single filling bottle 106, in order to solve the error caused by the residual filler raw material in the first round of filling operation.

[0042] Secondly, the filling bottle 106 moves forward with the operation of the conveyor belt 105. When the filling bottle 106 reaches the predetermined position directly below the filling component 3, the conveyor belt 105 stops running. At this time, the filling component 3 is controlled to move downward until the bottom opening of the discharge chamber 311 is close to the top opening of the filling bottle 106, and the solenoid valve at the bottom opening of the discharge chamber 311 is controlled to open.

[0043] The central control module 102 controls the adjustment hydraulic rod 308 to start and shorten the output end, driving the sliding cylinder 303 away from the discharge chamber 311. The sliding cylinder 303 quickly compresses the internal volume of the storage chamber 301, allowing the filler raw material to flow through the connecting hole 309 into the transfer chamber 302 and the discharge chamber 311. Due to the high viscosity of the filler raw material, the filler raw material slowly falls in the transfer chamber 302. When the bottom of the sliding cylinder 303 and the top of the transfer chamber 302 collide with each other, all the filler raw material in the storage chamber 301 flows to the transfer chamber 302.

[0044] Then, the central control module 102 controls the adjustment hydraulic rod 308 to start and the output end to extend, driving the sliding cylinder 303 to approach the discharge chamber 311 until the top of the sliding cylinder 303 is close to but does not conflict with the top of the transfer chamber 302, and the sliding cylinder 303 quickly compresses the internal volume of the transfer chamber 302, so that the filler raw material in the transfer chamber 302 and the discharge chamber 311 falls quickly, completing the filling of the first round of filling bottles 106. At this time, a small amount of filler raw material will remain on the inner wall of the discharge chamber 311; in the process of the sliding cylinder 303 approaching the discharge chamber 311, the silo 103 continues to fill the storage chamber 301 with filler raw material, and refills the internal volume of the storage chamber 301. At this time, the volume of the filler raw material in the storage chamber 301 is equal to the actual demand of a single filling bottle 106, which is convenient for the next round of filling operations. Because a small amount of filler raw material has remained on the inner wall of the discharge chamber 311 during the first round of filling, the second and subsequent rounds of filling do not need to consider the residual error of the filler raw material. When carrying out the second and subsequent rounds of filling operations, the filler raw material will replace the filler raw material remaining on the inner wall of the discharge chamber 311 from the previous round, further improving the filling accuracy.

[0045] Finally, the conveyor belt 105 drives the filled bottles 106 to move forward, and the next round of filling bottles 106 to be filled moves to the predetermined position directly below the filling component 3; at the same time, the central control module 102 controls the adjustment hydraulic rod 308 to start and shorten the output end, driving the sliding cylinder 303 away from the discharge chamber 311, and the sliding cylinder 303 quickly compresses the internal volume of the storage chamber 301, and the filler raw material flows through the connecting hole 309 into the transfer chamber 302 and the discharge chamber 311. At the same time, the space in the transfer chamber 302 and the discharge chamber 311 increases, and the pressure decreases, so that the filler raw material remaining on the inner wall of the discharge chamber 311 will not overcome the atmospheric pressure and continue to fall, so that the subsequent filler raw material can replace the filler raw material of the previous round.

[0046] It should be noted that the sliding cylinder 303 moves away from the discharge chamber 311 until the bottom of the sliding cylinder 303 collides with the top of the transfer chamber 302, the filler material has not flowed through the discharge chamber 311 opening, and the filling bottle 106 to be filled has reached the predetermined position, and the above process is repeated to complete the filling operation of the second round of filling bottles 106.

[0047] After that, the above filling operation for subsequent filling bottles 106 is continuously repeated. When all filling bottles 106 of the same batch are filled, the solenoid valve is controlled to close and the filling equipment stops working, which greatly improves the overall filling efficiency of the filling equipment.

[0048] During the above process, the sliding cylinder 303 is utilized to quickly compress the internal volume of the transfer chamber 302, so that the filler raw materials in the transfer chamber 302 and the discharge chamber 311 fall quickly. The sliding cylinder 303 compresses the internal volume of the storage chamber 301, and the space in the transfer chamber 302 and the discharge chamber 311 increases, and the pressure decreases, so that the filler raw materials remaining on the inner wall of the discharge chamber 311 will not fall, thereby improving the filling accuracy. By setting an adjustable hydraulic rod 308 to control the sliding cylinder 303 to perform periodic reciprocating motion in the storage chamber 301 and the transfer chamber 302, the number of times the solenoid valve is opened and closed is reduced, thereby effectively accelerating the overall filling efficiency of the filling equipment.

[0049] Embodiment three: This embodiment discloses a filling method of a polyurethane foam sealant filling device, comprising the following steps: Step 1: Adjust the output end of the hydraulic rod 308 to start and control the sliding cylinder 303 to slide up and down in a sealed manner inside the transfer chamber 302 to clean the impurities on the inner wall of the transfer chamber 302; The central control module 102 controls the rotation motor 305 to start, and synchronously drives the cleaning component 307 to rotate. When the compression amount of the return spring on the elastic scraper 3073 increases, the output ends of the two groups of pneumatic push rods 3074 of the cleaning component 307 are controlled to extend, so that the scraper 3076 contacts the inner wall of the discharge chamber 311. During the rotation of the rotation motor 305, the scraper 3076 is driven to remove impurities at a fixed point. Step 2: When the same batch of filling bottles 106 has a large demand for the filler raw material, the hydraulic rod 308 is adjusted to start and the output end is shortened, and the amount of blockage of the connecting hole 309 by the inner wall of the transfer chamber 302 is reduced. At this time, the flow rate of the filler raw material along the connecting hole 309 increases; When the demand for the filler material of another batch of filling bottles 106 decreases, the hydraulic rod 308 is adjusted to start and the output end is extended, and the blocking amount of the connecting hole 309 by the inner wall of the transfer chamber 302 becomes larger, and the flow amount of the filler material along the connecting hole 309 is reduced; Step 3: The filling bottle 106 moves forward with the operation of the conveyor belt 105. When the filling bottle 106 reaches the predetermined position directly below the filling assembly 3, the silo 103 starts to convey the sealant raw material, and the sealant raw material flows through the feed pipe 104, the storage cavity 301, the connecting hole 309, the transfer cavity 302 and the discharge cavity 311 in sequence to start filling the filling bottle 106; Step 4: Start the rotating motor 305 to reverse. When the compression amount of the torsion spring on the scraper 3076 exceeds the preset viscosity value, the control adjustment hydraulic rod 308 is started and the output end is shortened, and the blocking amount of the connecting hole 309 by the inner wall of the transfer chamber 302 is reduced; When the compression amount of the torsion spring on the scraper 3076 is lower than the preset viscosity value, the control adjustment hydraulic rod 308 is started and the output end is extended, and the blocking amount of the inner wall of the transfer chamber 302 to the connecting hole 309 increases.

[0050] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyurethane foam sealant filling device, comprising a carrier component (1), characterized in that: The carrier component (1) is provided with a moving component (2), and the moving component (2) is provided with a filling component (3); The carrier assembly (1) comprises a workbench (101), a central control module (102) is provided on one side of the workbench (101), a material bin (103) is provided on one side of the upper end surface of the workbench (101), and a material conveying pipe (104) is connected to the material bin (103); The moving assembly (2) comprises a slide rail (201), a plurality of slide grooves (202) are provided on one side of the slide rail (201), a moving plate (203) is provided in a sealed sliding connection inside the slide groove (202), a moving hydraulic rod (204) is provided at the bottom of the moving plate (203), and the bottom of the moving hydraulic rod (204) is fixedly connected to the workbench (101); The filling assembly (3) comprises a material storage chamber (301), one end of the material storage chamber (301) is connected to a transfer chamber (302), and one end of the transfer chamber (302) away from the material storage chamber (301) is connected to a discharge chamber (311), and the discharge chamber (311) is a truncated cone-shaped hollow cavity structure with openings at both ends.

2. The polyurethane foam sealant filling equipment according to claim 1, characterized in that: A conveyor belt (105) is rotatably connected to the workbench (101), and a plurality of filling bottles (106) are evenly arranged on the conveyor belt (105).

3. The polyurethane foam sealant filling equipment according to claim 1, characterized in that: One end of the movable plate (203) away from the slide rail (201) is connected to a clamping mechanism (205), the inner wall of the clamping mechanism (205) and the outer wall of the material storage cavity (301) are in contact with each other, and a docking hole (310) is provided at the top of the material storage cavity (301), and the docking hole (310) is connected to the material conveying pipe (104).

4. The polyurethane foam sealant filling equipment according to claim 1, characterized in that: The transfer chamber (302) is sealed and slidably connected to a sliding cylinder (303) inside. The sliding cylinder (303) is a cylindrical hollow structure with an open lower end surface, and the outer diameter of the sliding cylinder (303) is smaller than the inner diameter of the material storage chamber (301).

5. The polyurethane foam sealant filling equipment according to claim 4 is characterized in that: A rotating rod (304) is rotatably connected to the central axis of the material storage chamber (301); one end of the rotating rod (304) passes through the top of the material storage chamber (301) and is connected to a rotating motor (305); the other end passes through the top of the sliding cylinder (303) and is fixedly connected to a connecting rod (306); the cross section of the connecting rod (306) is configured as a "▽"-shaped structure; and a plurality of cleaning components (307) are fixedly connected to the end surface of the connecting rod (306) close to the inner wall of the transfer chamber (302).

6. The polyurethane foam sealant filling device according to claim 4, characterized in that: An adjusting hydraulic rod (308) is provided on the inner top of the material storage chamber (301), and an output end of the adjusting hydraulic rod (308) is fixedly connected to the top of the sliding cylinder (303). A plurality of connecting holes (309) are evenly provided on the side wall of the sliding cylinder (303).

7. The polyurethane foam sealant filling device according to claim 5, characterized in that: The cleaning assembly (307) comprises a fixed plate (3071), one side of the fixed plate (3071) is fixedly connected to the connecting rod (306), and the other side is fixedly connected to a limiting plate (3072), one end of the limiting plate (3072) away from the fixed plate (3071) is slidably connected to an elastic scraper (3073) via a return spring, and one end of the elastic scraper (3073) away from the limiting plate (3072) is in contact with the inner wall of the discharge chamber (311).

8. The polyurethane foam sealant filling device according to claim 7, characterized in that: Two groups of pneumatic push rods (3074) are provided on a side of the fixed plate (3071) away from the limiting plate (3072), and the output ends of the two groups of pneumatic push rods (3074) are connected to a connecting plate (3075), and the connecting plate (3075) is rotatably connected to a scraper (3076) via a torsion spring.

9. A filling method of a polyurethane foam sealant filling device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: adjusting the output end of the hydraulic rod (308) to start and control the sliding cylinder (303) to slide up and down in a sealed manner inside the transfer chamber (302) to clean impurities on the inner wall of the transfer chamber (302); The central control module (102) controls the rotation motor (305) to start, and synchronously drives the cleaning component (307) to rotate. When the compression amount of the return spring on the elastic scraper (3073) increases, the output ends of the two groups of pneumatic push rods (3074) of the cleaning component (307) are controlled to extend, so that the scraper (3076) contacts the inner wall of the discharge chamber (311). During the rotation of the rotation motor (305), the scraper (3076) is driven to remove impurities at a fixed point. Step 2: When the same batch of filling bottles (106) has a large demand for the filler raw material, the hydraulic rod (308) is adjusted to start and the output end is shortened, so that the amount of blockage of the connecting hole (309) by the inner wall of the transfer chamber (302) is reduced, and the flow rate of the filler raw material along the connecting hole (309) is increased; When the demand for the sealant raw material of another batch of filling bottles (106) decreases, the regulating hydraulic rod (308) is activated and the output end is extended, the amount of blockage of the connecting hole (309) by the inner wall of the transfer chamber (302) increases, and the flow rate of the sealant raw material along the connecting hole (309) decreases; Step 3: The filling bottle (106) moves forward along with the operation of the conveyor belt (105). When the filling bottle (106) reaches a predetermined position directly below the filling assembly (3), the material bin (103) starts to convey the sealant raw material, and the sealant raw material flows through the material delivery pipe (104), the material storage chamber (301), the connecting hole (309), the transfer chamber (302) and the material discharge chamber (311) in sequence to start filling the filling bottle (106); Step 4: Start the rotating motor (305) to reverse, and when the compression amount of the torsion spring on the scraper (3076) exceeds the preset viscosity value, the control adjustment hydraulic rod (308) is started and the output end is shortened, and the blocking amount of the inner wall of the transfer chamber (302) to the connecting hole (309) is reduced; When the compression amount of the torsion spring on the scraper (3076) is lower than the preset viscosity value, the control adjustment hydraulic rod (308) is started and the output end is extended, and the amount of blockage of the connecting hole (309) by the inner wall of the transfer chamber (302) increases.

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