Device capable of adjusting hardness of polystyrene foam

Abstract

The utility model discloses a device capable of adjusting the hardness of polystyrene foam, which comprises an air supply and supply pressurizing device, the air supply and supply pressurizing device is communicated with at least two charging buckets, heaters are arranged in the charging buckets, a stirrer is arranged in at least one charging bucket, the charging buckets are communicated with a mixing stirrer through a glue outlet pipeline, a metering pump is arranged on the glue outlet pipeline, and the charging buckets are communicated with the charging buckets through the metering pump. A glue return pipeline is arranged between the metering pump and the charging buckets, two ends of the glue return pipeline are respectively communicated with the glue outlet pipeline and the charging buckets, two ends of the metering pump are respectively provided with an inlet pressure detection meter and an outlet pressure detection meter, the two charging buckets are respectively filled with a component A and a component B, and accurate adjustment and control of the proportion of the component A and the component B are realized through the metering pump. And the pressure of the inlet pressure detection meter and the pressure of the outlet pressure detection meter are stable, so that the flow of the component A or the component B is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming machines, in particular to a device capable of adjusting the hardness of foaming glue. Background Art

[0002] Two-component polyurethane foam refers to an adhesive with foaming properties that is made by mixing two adhesives, component A and component B. Polyurethane foam has good bonding properties and strength, as well as high compressibility and low expansion rate. It is often used in sealing, filling and insulation. Two-component polyurethane adhesive consists of two components, usually one is the main agent and the other is the curing agent. After the two components are mixed, a chemical reaction will occur to produce cross-linking and solidify into a high-performance adhesive. The method of using two-component polyurethane foam is generally to mix component A and component B in a certain proportion and stir them, and then apply the mixed glue on the surface of the object to be bonded or sealed according to the set processing size range. After a period of time, it will expand and foam.

[0003] In the process of using two-component polyurethane foam to produce sealing strips, the hardness of the polyurethane is affected by the ratio control of component A and component B. Improper ratio control will result in the hardness of the foam failing to meet the requirements, which will affect the production efficiency and product quality of the coated sealing strips. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and provide a device capable of adjusting the hardness of foam glue.

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

[0006] A device capable of adjusting the hardness of a foamed rubber comprises an air supply, air replenishment and pressurization device, wherein the air supply, air replenishment and pressurization device is connected to a material barrel, wherein the number of the material barrels is at least two, a heater is arranged in the material barrel, a raw material agitator is arranged in at least one material barrel, the material barrel is connected to a mixing agitator through a rubber outlet pipeline, a metering pump is arranged on the rubber outlet pipeline, a rubber return pipeline is arranged between the metering pump and the material barrel, two ends of the rubber return pipeline are respectively connected to the rubber outlet pipeline and the material barrel, and an inlet pressure detection gauge and an outlet pressure detection gauge are respectively arranged at two ends of the metering pump.

[0007] In certain embodiments of the utility model, the air supply, air replenishment and pressurizing device includes an air pump, which is connected to the top of the barrel through a compressed air pipeline. The air pump is used to input compressed air into the barrel. The compressed air pipeline is provided with a switch valve and a pipeline pressure gauge.

[0008] In certain embodiments of the utility model, the heater includes two heating rods located at different heights, a heating plate is arranged between the two heating rods, the raw material agitator is vertically placed in the middle of the barrel, and the heating plate is arranged outside the raw material agitator.

[0009] In certain embodiments of the utility model, the material barrel is provided with a liquid level meter, and the glue outlet pipeline is provided with a filter, and the filter is used to filter the precipitated crystals and solidified materials.

[0010] In some embodiments of the utility model, a four-way is provided at the front end of the metering pump, and the four pipeline interfaces of the four-way are respectively connected to the rubber outlet pipeline, the metering pump, the rubber return pipeline, and the inlet pressure detection gauge.

[0011] In certain embodiments of the utility model, the mixing agitator comprises a mixing chamber, a mixing head is arranged in the mixing chamber, the mixing head is driven by a mixing motor, and a nozzle is arranged at the bottom of the mixing chamber.

[0012] In certain embodiments of the present invention, the mixing agitator is installed on a bridge-type three-coordinate moving assembly.

[0013] In certain embodiments of the present invention, a glue coating station base is provided below the mixing agitator.

[0014] In some embodiments of the utility model, the glue coating station base includes an upper slide and a lower slide, which are respectively mounted on the base rails, the lower slide is arranged on the inner side of the upper slide, the bottom of the upper slide is slidably mounted on the outer track of the base rail, the lower slide includes a lifting platform, the bottom of the lifting platform is provided with a bottom slider, and the bottom slider is slidably mounted on the inner track of the base rail

[0015] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The metering pump is used to accurately adjust and control the ratio of component A and component B to meet the hardness requirements of the foam after coating and extrusion molding. The inlet pressure detection gauge and the outlet pressure detection gauge are used to detect the pressure at both ends of the metering pump. When the pressure is stable, the flow rate of component A / component B is more accurate, which is conducive to ensuring the production efficiency of the foam;

[0017] 2. Through the heater, the temperature in the barrel is stably maintained at its storage temperature environment to prevent the raw materials from solidifying;

[0018] 3. During the stirring process, air is added to adjust the density so that the polyurethane component A in the barrel can remain homogeneous, which is beneficial to ensuring the quality of the foamed rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the utility model;

[0021] Figure 2 For the utility model Figure 1 A magnified view of;

[0022] Figure 3 It is a structural schematic diagram of the base guide rail of the utility model;

[0023] Figure 4 This is a structural schematic diagram of the gluing station base of the utility model;

[0024] Description of main reference numerals:

[0025] 1. Air supply, air replenishment and pressurization device, 10. Compressed air pipeline, 11. Pipeline pressure gauge, 2. Material barrel, 20. Heater, 21. Raw material agitator, 22. First material barrel, 23. Raw material mixing motor, 24. Heating plate, 25. Outlet valve, 3. Stainless steel glass tube level gauge, 4. Glue outlet pipeline, 40. Metering pump, 41. Inlet pressure detection gauge, 42. Outlet pressure detection gauge, 43. Filter, 44. Cross-way, 5. Mixing agitator, 50. Stirring head, 51. Nozzle, 52. Protrusion, 6. Glue return pipeline, 7. Gluing station, 70. Base, 71. Slide rail, 72. Inner track, 73. Outer track, 74. Upper slide, 75. Lower slide. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0028] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the invention.

[0029] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0030] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0031] Example 1, see Figure 1-2 :

[0032] A device for adjusting the hardness of foam glue includes an air supply, air replenishment and pressurization device 1, which is connected to a barrel 2. The air supply, air replenishment and pressurization device 1 includes an air pump, which is connected to the top of the barrel 2 through a compressed air pipeline 10. The air pump is used to input compressed air into the barrel 2. The compressed air pipeline 10 is provided with a switch valve and a pipeline pressure gauge 11. As an embodiment, the air supply, air replenishment and pressurization device 1 is also provided with a safety valve, which plays a safety protection role. When the pressure of the device exceeds the specified value, the safety valve opens to discharge part of the air in the system into the external environment, thereby avoiding accidents.

[0033] There are at least two barrels 2, and a heater 20 and a temperature detector are provided in the barrel 2. The temperature detector is used to detect the temperature condition in the barrel 2. The heater 20 is used to maintain the storage temperature environment in the barrel 2 to prevent the stored raw materials from solidifying. It is understandable that the heater 20 is more effective if it adopts a constant temperature heating device; a raw material agitator 21 is provided in at least one barrel 2.

[0034] As an embodiment, the number of the barrels 2 is two, namely a first barrel 22 for placing component A and a second barrel for placing component B. The raw material agitator 21 is arranged in the first barrel 22, and two compressed air pipelines 10 are arranged between the air pump and the first barrel 22. One compressed air pipeline 10 is used for pressurization, and the other compressed air pipeline 10 is used for air replenishment. The polyurethane of component A in the first barrel 22 is supplemented with air to adjust the density during the stirring process, so that component A remains homogeneous; while component B in the second barrel does not need to be stirred and the raw material agitator 21 is not arranged. A compressed air pipeline 10 is arranged between the air pump and the second barrel. It can be understood that the raw material agitator 21 is driven by the raw material stirring motor 23, and the raw material stirring motor 23 is installed on the top of the first barrel 22.

[0035] As an embodiment, the heater 20 includes two heating rods at different heights, a heating plate 24 is provided within the height range between the two heating rods, the raw material agitator 21 is vertically placed in the middle of the barrel 2, and the heating plate 24 is arranged outside the raw material agitator 21. Specifically, as an embodiment, a heating rod mounting hole is provided on the barrel 2, the heating part of the heating rod extends into the barrel 2 from the heating rod mounting hole, the heating plate 24 is a ring-shaped heating plate or an arc-shaped heating plate, and the heating plate 24 is installed on the inner wall of the barrel 2 through a fixing member.

[0036] As an embodiment, the barrel 2 is provided with a liquid level gauge, which is used to detect the liquid level of the raw material in the barrel 2. For example, a stainless steel glass tube liquid level gauge 3 is used, and the operator can visually observe the organic glass tube of the stainless steel glass tube liquid level gauge 3 to judge the liquid level in the barrel 2.

[0037] The bottom of the barrel 2 is connected to a mixer 5 through a glue outlet pipeline 4. The mixer 5 is used to stir the raw materials input from different barrels 2. A metering pump 40 is provided on the glue outlet pipeline 4. The metering pump 40 accurately adjusts the flow rate by changing the stroke size of the internal plunger to achieve precise adjustment of the flow rates of component A and component B, thereby avoiding improper control of the ratio of component A and component B, resulting in poor foaming and the hardness of the foamed glue failing to meet the requirements.

[0038] It is understandable that the material outlet at the bottom of the barrel 2 may be provided with an outlet valve 25 , and the opening and closing of the outlet valve 25 determines whether the raw materials flow into the glue outlet pipeline 4 .

[0039] An inlet pressure detection gauge 41 and an outlet pressure detection gauge 42 are respectively provided at both ends of the metering pump 40. The inlet pressure detection gauge 41 and the outlet pressure detection gauge 42 are used to detect the pressure conditions at both ends of the metering pump 40, and maintain the pressure stable when the metering pump 40 is running to suck the raw materials of component A / component B. When the pressure detected by the inlet pressure detection gauge 41 and the outlet pressure detection gauge 42 is stable, the flow rate of component A or component B is more accurate.

[0040] As an embodiment, the glue outlet pipeline 4 is provided with a filter 43, and the filter 43 is used to filter out the precipitated crystals and solidified materials. It can be understood that the filter 43 includes a filter net, and the filter 43 is arranged at one end close to the barrel 2. The raw materials flowing out of the glue outlet pipeline 4 are filtered by the filter 43 and then accurately controlled by the metering pump 40 to be transported to the mixing agitator 5.

[0041] A return rubber pipeline 6 is arranged between the metering pump 40 and the barrel 2, and the other end of the return rubber pipeline 6 is connected to the barrel 2, so that the remaining raw materials in the return rubber pipeline 6 that have not been transported by the metering pump 40 are returned to the corresponding barrel 2 through the return rubber pipeline 6 for recycling, thereby increasing fluidity and helping to reduce the deposition of raw materials in the return rubber pipeline 6. At the same time, the heater 20 arranged in the barrel 2 can maintain the storage temperature environment in the barrel 2 to prevent the stored raw materials from solidifying.

[0042] As an implementation mode, a four-way 44 is provided at the front end of the metering pump 40, and four pipeline interfaces of the four-way 44 are respectively connected to the rubber outlet pipeline 4, the metering pump 40, the inlet pressure detection gauge 41, and the rubber return pipeline 6.

[0043] As an embodiment, the mixing agitator 5 includes a mixing chamber, in which a stirring head 50 is arranged, and the stirring head 50 is driven by a stirring motor 51 for stirring the raw materials of component A and component B. The stirring motor 51 is arranged at the top of the mixing chamber, and a nozzle 51 is arranged at the bottom of the mixing chamber. The stirred two-component foaming glue is sprayed out through the nozzle 51 for extrusion molding; preferably, a protrusion 52 is connected to the lower part of the mixing chamber, the head of the stirring head 50 is arranged in the protrusion 52, the nozzle 51 is arranged at the bottom of the protrusion 52, and a gap is left between the nozzle 51 and the inner side wall of the protrusion 52. The outer surface of the head of the stirring head 50 is provided with a plurality of columns of inclined vertical grooves and a plurality of rows of transverse grooves, and the inclined vertical grooves pass through the transverse grooves, which is beneficial to improving the mixing and stirring effect.

[0044] Example 2

[0045] Repeat Example 1, but the mixing stirrer 5 is installed on the bridge-type three-coordinate moving assembly. The bridge-type three-coordinate moving assembly adopts the common bridge-type three-coordinate moving equipment on the market, which is used to move the mixing stirrer 5 in the three coordinate directions of X, Y, and Z, so that the two-component foaming glue is squeezed through the nozzle 51 of the mixing stirrer 5 to complete the required graphics. It can be understood that an industrial control computer is also provided, and the bridge-type three-coordinate moving assembly, the mixing stirrer 5, the air supply and air replenishment pressurization device 1, and the metering pump 40 are respectively electrically connected to the industrial control computer. During production and processing, the A component and the B component sucked by the metering pump 40 enter the mixing stirrer 5 according to the weight ratio under the control of the industrial control computer, and the stirring motor drives the stirring head 50 to stir and mix the A component and the B component entering the mixing chamber, and sprays out through the nozzle 51 for extrusion molding before solidification during the two-component mixing foaming time. Under the action of the bridge-type three-coordinate moving assembly, the foaming glue is coated and extruded on the workpiece that needs to be sealed according to the set processing size range, thereby improving production efficiency and product quality.

[0046] Example 3, see Figure 3-4 :

[0047] Example 2 is repeated, but a glue coating station base is provided below the mixing agitator 5, and the glue coating station base is used to place the workpiece to be extruded and coated with glue.

[0048] As an embodiment, the gluing station base includes an upper slide 74 and a lower slide 75, which are respectively installed on the guide rails of the base 70. The lower slide 75 is arranged on the inner side of the upper slide 74, and the bottom of the upper slide 74 is slidably installed on the outer track 73 of the guide rail of the base 70. The lower slide 75 includes a lifting platform, and a bottom slider is arranged at the bottom of the lifting platform, and the bottom slider is slidably installed on the inner track 72 of the guide rail of the base 70.

[0049] Specifically, the lifting platform adopts the common electric scissor-type lifting platform on the market. The base 70 guide rail includes two bases 70 arranged in parallel and four slide rails 71 arranged in parallel. Two slide rails 71 are arranged on each base 70. The slide rails 71 on the adjacent side of the two bases 70 are arranged as inner rails 72, and the slide rails 71 on the other side are arranged as outer rails 73.

[0050] When in use, the upper slide 74 and the lower slide 75 are used alternately, and the upper slide 74 moves to the gluing station 7 below the mixing agitator 5. The operator first places the workpiece on the upper slide 74 for foam glue coating, and then under the action of the outer track 73, the operator moves the upper slide 74 out, and the operator first places another workpiece on the lifting platform, and the lower slide 75 moves to the gluing station 7 below the mixing agitator 5. The lower slide 75 uses a lifting platform, and the lifting platform is lifted to the same level as the upper slide 74 for foam glue coating, and then the lifting platform descends and moves the lower slide 75 out along the inner track 72. The upper slide 74 is used alternately, and the cycle is repeated until all workpieces are glued.

[0051] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A device for adjusting the hardness of a foamed adhesive, characterized in that: It includes an air supply, air replenishment and pressurization device, which is connected to a material barrel. There are at least two material barrels. A heater is arranged in the material barrel. At least one material barrel is arranged with a raw material agitator. The material barrel is connected to a mixing agitator through a glue outlet pipeline. A metering pump is arranged on the glue outlet pipeline. A glue return pipeline is arranged between the metering pump and the material barrel. Both ends of the glue return pipeline are respectively connected to the glue outlet pipeline and the material barrel. An inlet pressure detection gauge and an outlet pressure detection gauge are respectively arranged at both ends of the metering pump.

2. The device for adjusting the hardness of foam glue according to claim 1, characterized in that: The air supply, air replenishment and pressurization device includes an air pump, which is connected to the top of the barrel through a compressed air pipeline. The compressed air pipeline is provided with a switch valve and a pipeline pressure gauge.

3. The device for adjusting the hardness of foam glue according to claim 1, characterized in that: The heater comprises two heating rods at different heights, a heating plate is arranged between the two heating rods, the raw material agitator is vertically placed in the middle of the barrel, and the heating plate is arranged outside the raw material agitator.

4. The device for adjusting the hardness of foam glue according to claim 1, characterized in that: The material barrel is provided with a liquid level meter, and the glue outlet pipeline is provided with a filter.

5. The device for adjusting the hardness of foam glue according to claim 1, characterized in that: A four-way is arranged at the front end of the metering pump, and four pipeline interfaces of the four-way are respectively connected to the rubber outlet pipeline, the metering pump, the rubber return pipeline, and the inlet pressure detection gauge.

6. The device for adjusting the hardness of foam glue according to claim 1, characterized in that: The mixing agitator comprises a mixing chamber, a mixing head is arranged in the mixing chamber, the mixing head is driven by a mixing motor, and a nozzle is arranged at the bottom of the mixing chamber.

7. The device for adjusting the hardness of foam glue according to claim 6, characterized in that: The mixing stirrer is installed on a bridge-type three-coordinate moving assembly.

8. The device for adjusting the hardness of foam glue according to claim 6, characterized in that: A glue coating station base is arranged below the mixing agitator.

9. The device for adjusting the hardness of foam glue according to claim 8, characterized in that: The gluing station base includes an upper slide and a lower slide, which are respectively installed on the base guide rails. The lower slide is arranged on the inner side of the upper slide, and the bottom of the upper slide is slidably installed on the outer track of the base guide rail. The lower slide includes a lifting platform, and a bottom slider is arranged at the bottom of the lifting platform, and the bottom slider is slidably installed on the inner track of the base guide rail.

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