Pouring nozzle filtering structure of polyurethane foaming machine

Abstract

The utility model relates to the field of pouring guns of polyurethane foaming machines, and discloses a pouring nozzle filtering structure of a polyurethane foaming machine, which comprises a spray gun, two bolt pins are slidably connected to the left side of the spray gun, a filter screen is arranged on the right sides of the bolt pins, a fixing component is mounted outside the spray gun, and a cleaning component is mounted inside the spray gun. The fixing assembly comprises a fixing block and two shells, the bottom of the fixing block is slidably connected to the interior of the spray gun, the shells are fixedly connected to the top of the spray gun, first springs are fixedly connected to the inner walls of the shells, sliding plates are fixedly connected to the left ends of the first springs, and shifting pieces are fixedly connected to the exteriors of the sliding plates; the left side of the sliding plate is fixedly connected with an insertion rod. According to the device, the shifting piece is shifted to drive the sliding plate to compress the first spring, so that the inserting rod is retracted into the shell to be separated from the fixing block, then the fixing block is pulled out of the spray gun, the bolt pin can be rapidly taken out of the spray gun, and therefore the filter screen can be conveniently replaced, and operation is convenient, fast and labor-saving.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of polyurethane foaming machine pouring gun, especially polyurethane foaming machine's pouring nozzle filter structure. BACKGROUND

[0002] Polyurethane foaming machine pouring is a kind of process that polyurethane raw materials are mixed, pressurized by foaming machine equipment and then injected into mold to produce polyurethane foam product, which is widely used in manufacturing foam products with good heat insulation, sound insulation and pressure resistance characteristics, such as insulation board, automobile seat, refrigerator car and other products, and the core principle of polyurethane foaming machine pouring is to deliver polyether polyol and isocyanate and other raw materials to the mixing head through high-pressure pump according to specific proportion and condition, and then quickly inject into mold for chemical reaction after accurate mixing to generate foam.

[0003] The key of this process lies in the accuracy of mixing and pouring, and uneven mixing of raw materials or too fast or too slow pouring speed will affect the density, hardness and final quality of foam, in order to ensure the quality of products, modern polyurethane foaming machine is usually equipped with automatic control system, which can monitor parameters such as temperature, pressure and flow in real time, so as to optimize production process, reduce human error and improve production efficiency.

[0004] Polyurethane foaming machine pouring has high production efficiency, low energy consumption and can produce high-quality foam products, among which the gun head is an essential part in polyurethane foaming machine, which mixes and sprays AB material, but in the traditional gun head, AB material needs to be filtered through filter screen before mixing, and filter screen needs to be replaced after long time use, and the traditional replacement method is to disassemble by auxiliary tool and bolts, which is time-consuming and laborious and low in efficiency, so the pouring nozzle filter structure of polyurethane foaming machine is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the pouring nozzle filter structure of polyurethane foaming machine is provided to improve the problem that in the traditional gun head, AB material needs to be filtered through filter screen before mixing, and filter screen needs to be replaced after long time use, and the traditional replacement method is to disassemble by auxiliary tool and bolts, which is time-consuming and laborious and low in efficiency.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: the pouring nozzle filter structure of polyurethane foaming machine, including spray gun, two pins are slidably connected on the left side of the spray gun, a filter screen is arranged on the right side of the pin, a fixing assembly is installed outside the spray gun, and a cleaning assembly is installed inside the spray gun.

[0007] The fixed assembly includes a fixed block and two housings, the fixed block is slidably connected at the bottom of the spray gun, the housings are fixedly connected at the top of the spray gun, the two housings are arranged at the right side of the fixed block, spring one is fixedly connected to the inner wall of the housing, the left end of the spring one is fixedly connected with a sliding plate, the outer part of the sliding plate is fixedly connected with a pulling piece, the left side of the sliding plate is fixedly connected with a plug rod, the inner part of the housing is slidably connected with a stop block, and the outer part of the stop block is fixedly connected with a pulling rod.

[0008] As a further description of the above technical solution:

[0009] The cleaning assembly includes two supports, the supports are fixedly connected in the spray gun, a rotating rod is rotatably connected in the support, a plurality of blades are fixedly connected to the right side of the rotating rod, two sleeve shells are fixedly connected to the left side of the rotating rod, a plurality of spring two are fixedly connected in the sleeve shell, and the outer part of the spring two in each sleeve shell is fixedly connected with the same scraper.

[0010] As a further description of the above technical solution:

[0011] The outer part of the sliding plate is slidably connected to the inner wall of the housing, and the outer part of the pulling piece is slidably connected to the inner part of the housing.

[0012] As a further description of the above technical solution:

[0013] The outer part of the plug rod is slidably connected to the inner part of the housing, and the outer part of the pulling rod is slidably connected to the inner part of the housing.

[0014] As a further description of the above technical solution:

[0015] The outer part of the plug rod is inserted into the inner part of the fixed block, and the outer part of the stop block abuts against the outer part of the plug rod.

[0016] As a further description of the above technical solution:

[0017] The outer part of the scraper is slidably connected to the inner part of the sleeve shell, and the outer part of the scraper is slidably connected to the inner wall of the filter screen.

[0018] As a further description of the above technical solution:

[0019] The outer part of the fixed block penetrates through the inner part of the pin.

[0020] As a further description of the above technical solution:

[0021] The outer part of the filter screen is slidably connected to the inner part of the spray gun.

[0022] The utility model has the advantages of:

[0023] 1. The utility model discloses a plug rod is retracted with fixed block from the spray gun and is pulled out, realizes the pin bolt from the spray gun is taken out quickly, thereby convenient for the replacement of filter screen, convenient operation saves the labor.

[0024] 2. The utility model discloses a liquid drives vane, makes the rotation of the rotation bar under the support of support, simultaneously cooperation spring no. 2 promotes the scraper, realized the use scraper and scrape the impurity that filter screen inner wall adheres, avoid the filter screen and be blocked, thereby prolongs the service life of filter screen single time. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the three -dimensional schematic view of the pouring nozzle filter structure of polyurethane foaming machine that the utility model proposes;

[0026] Figure 2 It is the structure schematic view of the fixed block of the pouring nozzle filter structure of polyurethane foaming machine that the utility model proposes;

[0027] Figure 3 It is the structure schematic view of the plug rod of the pouring nozzle filter structure of polyurethane foaming machine that the utility model proposes;

[0028] Figure 4 It is the structure schematic view of the pin bolt of the pouring nozzle filter structure of polyurethane foaming machine that the utility model proposes;

[0029] Figure 5 It is the structure schematic view of the scraper of the pouring nozzle filter structure of polyurethane foaming machine that the utility model proposes.

[0030] LEGEND:

[0031] 1, spray gun;2, pin bolt;3, filter screen;4, fixed block;5, shell;6, spring no. 1;7, slide plate;8, paddle;9, stop block;10, pull rod;11, plug rod;12, support;13, rotation bar;14, vane;15, casing;16, spring no. 2;17, scraper. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0033] REFERENCE Figures 1-3The utility model provides a kind of embodiment: the pouring nozzle filtering structure of polyurethane foaming machine, including spray gun 1, two pins 2 are slidably connected in the left side of spray gun 1, pin 2 right side is provided with filter screen 3, spray gun 1 is used to mix and spray out AB material, pin 2 is used to install filter screen 3, filter screen 3 is used to filter AB material, avoid impurity to block spray gun 1, fixed assembly is installed outside spray gun 1, cleaning assembly is installed inside spray gun 1;

[0034] Fixed assembly includes fixed block 4 and two housings 5, fixed block 4 bottom is slidably connected inside spray gun 1, housing 5 is fixedly connected at the top of spray gun 1, two housings 5 are arranged at the right side of fixed block 4, spring one 6 is fixedly connected on the inner wall of housing 5, the left end of spring one 6 is fixedly connected with sliding plate 7, the outside of sliding plate 7 is fixedly connected with tab 8, sliding plate 7 left side is fixedly connected with inserting rod 11, housing 5 inside is slidably connected with stop block 9, stop block 9 outside is fixedly connected with lever 10, fixed block 4 is used to fix pin 2 in spray gun 1, housing 5 is used to connect and protect internal parts, spring one 6 is used to push sliding plate 7 reset, sliding plate 7 is used to drive inserting rod 11 synchronous movement, tab 8 is used to facilitate sliding plate 7 to move, inserting rod 11 is used to be inserted in the inside of lower fixed block 4, so that fixed block 4 is fixed on spray gun 1, stop block 9 is used to stop inserting rod 11, avoid inserting rod 11 reset, lever 10 is used to drive inserting rod 11 to move, the inner wall of housing 5 is slidably connected with the outside of sliding plate 7, the inside of housing 5 is slidably connected with the outside of tab 8, the inside of housing 5 is slidably connected with the outside of inserting rod 11, the inside of housing 5 is slidably connected with the outside of lever 10, housing 5 limits the movement direction of sliding plate 7, tab 8, inserting rod 11 and lever 10 simultaneously, the outside of inserting rod 11 is inserted in the inside of fixed block 4, so that fixed block 4 is fixed, the outside of stop block 9 and the outside of inserting rod 11 abut, avoid inserting rod 11 automatic reset, the inside of fixed block 4 is penetrated through pin 2, so that pin 2 is fixed, the inside of spray gun 1 is slidably connected with the outside of filter screen 3, so that filter screen 3 remains stable.

[0035] Refer to Figure 2 、 Figure 4 、 Figure 5 , cleaning assembly includes two supports 12, support 12 is fixedly connected inside spray gun 1, rotatingly connected with rotating rod 13 in the inside of support 12, a plurality of blades 14 are fixedly connected on the right side of rotating rod 13, two sleeve shells 15 are fixedly connected on the left side of rotating rod 13, a plurality of spring two 16 are fixedly connected in the inside of sleeve shell 15, the same scraper 17 is fixedly connected with the outside of spring two 16 in each sleeve shell 15, support 12 is used to support rotating rod 13, rotating rod 13 is used to drive sleeve shell 15 to rotate, blade 14 is used to drive rotating rod 13 to rotate, sleeve shell 15 is used to protect internal parts, spring two 16 is used to push scraper 17 to move, scraper 17 is used to scrape away the impurity of filter screen 3 inner wall, scraper 17 is slidably connected on the inner wall of filter screen 3, limit the movement direction of scraper 17, so that filter screen 3 is avoided to block.

[0036] Working principle: when using the device, connect the pipeline of AB material to the spray gun 1, and start operation, the AB material enters the spray gun 1 and is filtered by the filter screen 3, then mixed and sprayed out, at the same time that the material enters the spray gun 1, under the support of the support 12, the liquid flow will drive the blade 14 to rotate the rotating rod 13, drive the sleeve 15 to revolve, and cooperate with the spring 16 to push the scraper 17 against the inner wall of the filter screen 3, so that the scraper 17 slides in the filter screen 3, thereby pushing the attached impurities to one side, prolonging the service life of the filter screen 3 for a single time, avoiding clogging the mesh, when using for a period of time, the filter screen 3 needs to be replaced, by turning the tab 8, the sliding plate 7 compresses the spring 6 to make the insertion rod 11 retract into the shell 5 and separate from the fixed block 4, at the same time the stop block 9 will automatically fall down and block the outlet of the insertion rod 11, at this time the fixed block 4 is unlocked, then the fixed block 4 is taken out from the spray gun 1, the pin bolt 2 is unlocked, then the pin bolt 2 connected with the filter screen 3 is pulled out from the spray gun 1, and the filter screen 3 is replaced and inserted into the spray gun 1 again, and the fixed block 4 is put back into the spray gun 1, finally the pull rod 10 is pulled up, the stop block 9 and the insertion rod 11 are separated, at this time the spring 6 will instantaneously push the sliding plate 7 to reset, drive the insertion rod 11 to pop in the fixed block 4, fix the fixed block 4 on the spray gun 1, thereby fixing the pin bolt 2, so as to realize quick replacement, convenient operation, time and labor saving.

[0037] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. Pouring nozzle filtering structure for polyurethane foaming machines, comprising a lance (1), characterized in that: The spray gun (1) is slidably connected with two pins (2) on the left side, the pins (2) are provided with filter screens (3) on the right side, the spray gun (1) is externally provided with a fixing assembly, and the spray gun (1) is internally provided with a cleaning assembly. The fixing assembly comprises a fixing block (4) and two housings (5), the fixing block (4) is slidably connected inside the spray gun (1), the housings (5) are fixedly connected to the top of the spray gun (1), the housings (5) are arranged on the right side of the fixing block (4), spring I (6) is fixedly connected to the inner wall of the housing (5), the slide plate (7) is fixedly connected to the left end of the spring I (6), the pull piece (8) is fixedly connected to the outside of the slide plate (7), the plug rod (11) is fixedly connected to the left side of the slide plate (7), the stop block (9) is slidably connected inside the housing (5), and the pull rod (10) is fixedly connected to the outside of the stop block (9).

2. The filter structure for a casting nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The cleaning assembly comprises two supports (12), the supports (12) are fixedly connected inside the spray gun (1), the rotating rod (13) is rotatably connected inside the support (12), a plurality of blades (14) are fixedly connected to the right side of the rotating rod (13), two sleeve shells (15) are fixedly connected to the left side of the rotating rod (13), a plurality of spring II (16) are fixedly connected inside the sleeve shell (15), and the same scraper (17) is fixedly connected to the outside of the spring II (16) in each sleeve shell (15).

3. The filter structure for a casting nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The slide plate (7) is slidably connected to the inner wall of the housing (5), and the pull piece (8) is slidably connected to the inside of the housing (5).

4. The filter structure for a casting nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The plug rod (11) is slidably connected to the inside of the housing (5), and the pull rod (10) is slidably connected to the inside of the housing (5).

5. The filter structure for a pouring nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The plug rod (11) is externally inserted into the fixing block (4), and the stop block (9) is abutted between the outside of the plug rod (11) and the outside of the plug rod (11).

6. The filter structure for a pouring nozzle of a polyurethane foaming machine according to claim 2, characterized in that: The scraper (17) is slidably connected to the inside of the sleeve shell (15), and the scraper (17) is slidably connected to the inner wall of the filter screen (3).

7. The filter structure for a pouring nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The fixing block (4) penetrates the inside of the pin (2).

8. The filter structure for a pouring nozzle of a polyurethane foaming machine according to claim 1, characterized in that: The filter screen (3) is slidably connected to the inside of the spray gun (1).

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