Preparation method of waterproof and oil-proof silicone leather pad for home use and pretreatment equipment

Abstract

The application relates to a preparation method and pretreatment equipment of a waterproof and oil-proof silicone leather pad for home use. The pretreatment equipment comprises a feeding roller, a polishing assembly arranged at the output side of the feeding roller, a conveying roller arranged at the output side of the polishing assembly, two first supporting rollers arranged between the feeding roller and the conveying roller and respectively located at the two sides of the polishing assembly, a recovery assembly connected with the polishing assembly, and a plurality of second supporting rollers arranged at the output side of the conveying roller. The silicone leather fabric is pretreated before waterproof and oil-proof paint is sprayed, the adhesion of the mixed agent on the surface of the silicone leather fabric is improved, and the stability of the protective layer is improved, so that the protective layer is not prone to cracking and falling off after long-time use. The silicone leather scraps are collected through the dust suction port arranged on the bottom surface of the polishing disc and the dust suction hole arranged on the rolling ball, and the rolling ball can also play a role in assisting the rotation of the polishing disc when the polishing disc rotates.

Description

Technical Field

[0001] The invention belongs to the technical field of leather, and in particular relates to a preparation method and pretreatment equipment for a waterproof and oil-proof silicone leather pad for household use. Background Art

[0002] Silicone leather is a new type of environmentally friendly leather made of silicone as raw material. This new material is combined with substrates such as microfiber and non-woven fabrics and processed and prepared. It is suitable for applications in various industries such as car seats, interior decoration, household items, outdoor products, etc.

[0003] For ease of use, silicone leather is generally sprayed with waterproof and oil-proof coating to form a waterproof and oil-proof protective film layer. However, the protective film layer is prone to cracking or falling off after repeated washing and long-term use, thereby reducing its waterproof and oil-proof performance and causing inconvenience to users. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing a waterproof and oil-proof silicone leather pad for household use and a pretreatment device in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] Disclosed is a pretreatment device for waterproof and oil-proof silicone leather pads for household use, comprising a feeding roller, a polishing assembly arranged on the output side of the feeding roller, a conveying roller arranged on the output side of the polishing assembly, two first support rollers arranged between the feeding roller and the conveying roller and respectively located on both sides of the polishing assembly, a recovery assembly connected to the polishing assembly, a plurality of second support rollers arranged on the output side of the conveying roller, a spraying assembly arranged between two of the second support rollers and used to be connected to the recovery assembly, a collecting assembly for collecting a mixture, a drying box arranged on the output side of the spraying box, a cooling box arranged on one side of the drying box, and a collecting roller arranged on one side of the cooling box for winding up the pretreated silicone leather.

[0007] As a further optimization scheme of the present invention, the polishing assembly includes a door frame plate, two hydraulic cylinders arranged at the top of the door frame plate, a horizontal plate connected to the bottom of the output shafts of the two hydraulic cylinders, a dust suction pipe passing through the horizontal plate and the top of the door frame plate, a polishing part arranged at the bottom of the dust suction pipe, a bottom support plate arranged on the two side walls inside the door frame plate and located below the horizontal plate, a fixed cylinder arranged at the top of the door frame plate, and a power part for driving the dust suction pipe to rotate, and the dust suction pipe is rotatably connected to the horizontal plate, the door frame plate and the fixed cylinder through bearings.

[0008] As a further optimization scheme of the present invention, the power part includes a motor arranged on a horizontal plate, gears mounted on the motor output shaft and the dust suction pipe and meshing with each other, the grinding part includes a grinding disc, a dust suction chamber opened inside the grinding disc, a dust suction port opened at the bottom of the grinding disc and connected to the dust suction chamber, a number of support plates arranged inside the dust suction chamber, and a rolling ball for assisting the rotation of the grinding disc connected between two adjacent support plates through a bearing, the inner cavity of the rolling ball is hollow and a number of dust suction holes are opened on its outer wall, the dust suction pipe is connected to the dust suction chamber, and an air flow channel is left between the top of the support plate and the top wall of the dust suction chamber.

[0009] As a further optimization solution of the present invention, the recovery component includes a conveying pipe connected to the fixed cylinder, a cyclone separator connected to the conveying pipe, a storage box connected to the dust exhaust port of the cyclone separator, and a material pipe arranged on the storage box.

[0010] As a further optimization scheme of the present invention, the spray assembly includes a mixing box connected to the material pipe, an output pipe arranged at the bottom of the mixing box, a horizontal pipe arranged at the bottom of the output pipe, and several high-pressure nozzles arranged on the horizontal pipe. A delivery pump is provided on the output pipe, and control valves are provided on both the material pipe and the output pipe.

[0011] As a further optimization solution of the present invention, the collection component includes a transparent collection box, a collection tube connected to the transparent collection box, and a collection cover connected to the top of the collection tube and protected on the outside of the high-pressure nozzle and the silicone leather fabric.

[0012] A method for preparing a waterproof and oil-proof silicone leather pad for home use comprises the following steps:

[0013] S1. Dry, trim, and iron the silicone leather fabric, then cool it naturally for use;

[0014] S2, pre-treating the silicone leather fabric treated in step S1 through a pre-treatment device to obtain pre-treated silicone leather, wherein the pre-treatment is to increase the adhesion of the mixture on the surface of the silicone leather fabric;

[0015] Among them, the pretreatment method of the pretreatment equipment for silicone leather fabric is specifically as follows:

[0016] Step 1: Grind the surface of the silicone leather fabric smooth using a grinding component, and collect the silicone leather scraps generated by grinding using a recycling component;

[0017] Step 2: The collected silicone leather scraps are transported to a spraying assembly, fully mixed with the adhesive, and then sprayed on the polished silicone leather fabric surface. After drying in a drying oven and cooling in a cooling box, pretreated silicone leather is obtained;

[0018] S3, spraying a waterproof and oil-proof coating onto the surface of the pretreated silicone leather to form a protective layer, laying a mesh cloth, and then drying, hot pressing and cooling to obtain the waterproof and oil-proof silicone leather;

[0019] S4, leather pad is sewn from waterproof and oil-proof silicone leather.

[0020] As a further optimized solution of the present invention, in step S2, the mixture includes 70% to 85% of adhesive and 15% to 30% of silica gel leather scraps.

[0021] As a further optimized solution of the present invention, the adhesive is one of a water-based polyurethane adhesive, an acrylic adhesive, and a chloroprene rubber adhesive.

[0022] The beneficial effects of the present invention are:

[0023] 1) The bottom surface of the grinding disc in the pretreatment equipment of the present invention can grind the silicone leather fabric, and the silicone leather debris is collected through the dust suction port provided on the bottom surface of the grinding disc and the dust suction hole provided on the rolling ball. The silicone leather debris inside the dust suction chamber is then collected and transported to the inside of the storage box through the cyclone separator, the conveying pipe, the fixed cylinder, and the dust suction pipe. In the process of the grinding disc rotating to grind the silicone leather fabric, the silicone leather debris can be fully collected;

[0024] 2) The ball in the present invention is rotatable relative to the support plate. When the grinding disc rotates, the ball assists the grinding disc in rotating, so that the grinding disc does not absorb and block the dust collection chamber due to suction, thereby hindering the rotation of the grinding disc, or damaging the smoothness of the silicone leather material being transported, or generating greater resistance to the motor, resulting in increased energy loss of the motor.

[0025] 3) The present invention pre-treats the silicone leather fabric before spraying the waterproof and oil-proof coating, which can improve the adhesion of the mixture on the surface of the silicone leather fabric, thereby improving the stability of the protective layer formed by spraying the waterproof and oil-proof coating, making it less likely to crack and fall off during long-term use, and the waterproof and oil-proof silicone leather pad obtained by sewing is more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the pretreatment equipment of the present invention;

[0027] Figure 2 It is a front view of the grinding assembly, the recovery assembly, and the spraying assembly of the present invention;

[0028] Figure 3 is a side view of the grinding assembly of the present invention;

[0029] Figure 4 is a side sectional view of the grinding piece of the present invention;

[0030] Figure 5 is a bottom view of the grinding piece of the present invention;

[0031] In the figure: 1. unloading roller; 2. receiving roller; 3. first supporting roller; 4. conveying roller; 5. second supporting roller; 6. door frame plate; 7. hydraulic cylinder; 8. cross plate; 9. grinding piece; 91. grinding disc; 92. dust suction chamber; 93. dust suction port; 94. support plate; 95. rolling ball; 96. dust suction hole; 10. dust suction pipe; 11. motor; 12. gear; 13. fixing cylinder; 14. bottom support plate; 15. conveying pipe; 16. cyclone separator; 17. storage box; 18. material pipe; 19. mixing box; 20. output pipe; 21. conveying pump; 22. control valve; 23. cross pipe; 24. high-pressure nozzle; 251. collection hood; 252. collection pipe; 253. transparent collection box; 26. drying box; 27. cooling box. DETAILED DESCRIPTION

[0032] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0033] Example 1

[0034] A method for preparing a waterproof and oil-proof silicone leather pad for home use comprises the following steps:

[0035] S1. Dry, trim, and iron the silicone leather fabric, then cool it naturally for use;

[0036] S2, pre-treating the silicone leather fabric treated in step S1 through a pre-treatment device to obtain pre-treated silicone leather, wherein the pre-treatment is to increase the adhesion of the mixture on the surface of the silicone leather fabric;

[0037] The mixture includes 70% neoprene adhesive and 30% silicone leather scraps.

[0038] like Figure 1-5The figure shows: a pretreatment device for waterproof and oil-proof silicone leather pads for home use, comprising a feeding roller 1, a polishing assembly arranged on the output side of the feeding roller 1, a conveying roller 4 arranged on the output side of the polishing assembly, two first support rollers 3 arranged between the feeding roller 1 and the conveying roller 4 and respectively located on both sides of the polishing assembly, a recovery assembly connected to the polishing assembly, a plurality of second support rollers 5 arranged on the output side of the conveying roller 4, a spraying assembly arranged between two of the second support rollers 5 and used to be connected to the recovery assembly, a collecting assembly for collecting a mixture, a drying box 26 arranged on the output side of the spraying assembly, a cooling box 27 arranged on one side of the drying box 26, and a receiving roller 2 arranged on one side of the cooling box 27 for winding up the pretreated silicone leather.

[0039] Preferably, the grinding assembly includes a door frame plate 6, two hydraulic cylinders 7 arranged at the top of the door frame plate 6, a horizontal plate 8 connected to the bottom of the output shafts of the two hydraulic cylinders 7, a dust suction pipe 10 passing through the horizontal plate 8 and the top of the door frame plate 6, a grinding part 9 arranged at the bottom of the dust suction pipe 10, a bottom support plate 14 arranged on the two side walls inside the door frame plate 6 and below the horizontal plate 8, a fixed cylinder 13 arranged at the top of the door frame plate 6 and a power part for driving the dust suction pipe 10 to rotate, and the dust suction pipe 10 is rotatably connected to the horizontal plate 8, the door frame plate 6 and the fixed cylinder 13 through bearings.

[0040] Preferably, the power component includes a motor 11 provided on the horizontal plate 8, a gear 12 mounted on the output shaft of the motor 11 and the dust suction pipe 10 and meshing with each other, the grinding component 9 includes a grinding disc 91, a dust suction chamber 92 opened inside the grinding disc 91, a dust suction port 93 opened at the bottom of the grinding disc 91 and connected to the dust suction chamber 92, a number of support plates 94 provided inside the dust suction chamber 92, and a ball 95 for assisting the rotation of the grinding disc 91 is connected between two adjacent support plates 94 through a bearing. The inner cavity of the ball 95 is hollow and a number of dust suction holes 96 are opened on its outer wall. The dust suction pipe 10 is connected to the dust suction chamber 92, and an air flow channel is left between the top of the support plate 94 and the inner top wall of the dust suction chamber 92.

[0041] Preferably, the recycling assembly includes a conveying pipe 15 connected to the fixed cylinder 13 , a cyclone separator 16 connected to the conveying pipe 15 , a storage box 17 connected to the dust exhaust port of the cyclone separator 16 , and a material pipe 18 provided on the storage box 17 .

[0042] Preferably, the spraying assembly includes a mixing box 19 connected to the material pipe 18, an output pipe 20 arranged at the bottom of the mixing box 19, a horizontal pipe 23 arranged at the bottom of the output pipe 20, and several high-pressure nozzles 24 arranged on the horizontal pipe 23. A delivery pump 21 is provided on the output pipe 20, and a control valve 22 is provided on both the material pipe 18 and the output pipe 20.

[0043] Preferably, the collection assembly includes a transparent collection box 253, a collection tube 252 connected to the transparent collection box 253, and a collection cover 251 connected to the top of the collection tube 252 and protected outside the high-pressure nozzle 24 and the silicone leather fabric.

[0044] It should be noted that an adhesive feeding pipe connected to an external adhesive storage box is provided on the mixing box 19, and the receiving roller 2 and the conveying roller 4 are driven to rotate by the same driving member. Specifically, the intermittent motor is connected to the rear end of the receiving roller 2, and a sprocket is set on the rear end of the receiving roller 2 and the conveying roller 4. The sprockets on the receiving roller 2 and the conveying roller 4 are connected by a chain. When the intermittent motor drives the receiving roller 2 to rotate, the conveying roller 4 is driven to rotate together through the sprocket and the chain, thereby realizing the conveying of silicone leather fabrics.

[0045] The specific pretreatment method of silicone leather fabric by pretreatment equipment is as follows:

[0046] Step 1: Grind the surface of the silicone leather fabric smooth using a grinding component, and collect the silicone leather scraps generated by grinding using a recycling component;

[0047] like Figure 1-5 As shown, the silicone leather fabric is fixed on the unwinding roller 1, the silicone leather fabric is unfolded and passed through the first support roller 3, the conveying roller 4, and the second support roller 5 in sequence, and then fixed on the receiving roller 2. The receiving roller 2 rotates to drive the silicone leather fabric to move and be wound on the receiving roller 2. At the same time, the motor 11 is started, and the motor 11 rotates to drive the gear 12 sleeved on the motor 11 to rotate. The rotation of the gear 12 drives the meshing gear 12 to rotate, thereby driving the dust suction pipe 10 to rotate, and the rotation of the dust suction pipe 10 drives the grinding piece 9 to rotate, wherein the grinding disc 91 The rotation can polish the surface of the silicone leather fabric passing between the bottom support plate 14 and the mixing box 19. During polishing, the cyclone separator 16 is started at the same time. The cyclone separator 16 collects silicone leather debris through the conveying pipe 15, the fixed cylinder 13, the dust suction pipe 10, the dust suction chamber 92, the dust suction port 93 and the dust suction hole 96 opened on the rolling ball 95, and transports the silicone leather debris to the inside of the cyclone separator 16. The gas and the silicone leather debris are separated by the cyclone separator 16, and the silicone leather debris is transported to the inside of the storage box 17 for storage.

[0048] Step 2: The collected silicone leather scraps are transported to the spraying assembly, fully mixed with the adhesive, and then sprayed on the polished silicone leather surface. After drying in the drying box 26 and cooling in the cooling box 27, pretreated silicone leather is obtained;

[0049] like Figure 1-2As shown: open the control valve 22 on the material pipe 18, and the silicone leather scraps stored in the cyclone separator 16 will be transported to the inside of the mixing box 19 through the material pipe 18, and then the silicone leather scraps and adhesive transported into the mixing box 19 will be fully mixed by the mixing box 19 to obtain a mixture, and then open the control valve 22 on the output pipe 20, and the mixture in the mixing box 19 will be extracted by the delivery pump 21 and transported to the cross pipe 23, and then sprayed on the polished surface of the silicone leather fabric through multiple high-pressure nozzles 24 on the cross pipe 23, and the silicone leather fabric will continue to be transported, and the silicone leather fabric will be dried by the drying box 26, and the silicone leather fabric will be cooled by the cooling box 27 to obtain pretreated silicone leather.

[0050] S3, spraying a waterproof and oil-proof coating onto the surface of the pretreated silicone leather to form a protective layer, laying a mesh cloth, and then drying, hot pressing and cooling to obtain the waterproof and oil-proof silicone leather;

[0051] In this embodiment, the waterproof and oil-proof coating is made of waterproof and oil-proof agent FGC-606.

[0052] S4, leather pad is made of waterproof and oil-proof silicone leather.

[0053] Example 2

[0054] The difference from Example 1 is that the mixture includes 78% water-based polyurethane adhesive and 23% silicone leather scraps.

[0055] The rest remains the same as in Example 1.

[0056] Example 3

[0057] The difference from Example 1 is that the mixture includes 85% acrylic adhesive and 15% silicone leather scraps.

[0058] The rest remains the same as in Example 1.

[0059] Comparative Example 1

[0060] A method for preparing a waterproof and oil-proof silicone leather pad for home use comprises the following steps:

[0061] S1. Dry, trim, and iron the silicone leather fabric, then cool it naturally for use;

[0062] S2, spraying a waterproof and oil-proof coating onto the surface of the silicone leather fabric treated in step S1 to form a protective layer, laying a mesh cloth, and then drying, hot pressing and cooling to obtain a waterproof and oil-proof silicone leather;

[0063] S3, leather pad is sewn from waterproof and oil-proof silicone leather.

[0064] In this embodiment, the waterproof and oil-proof coating is made of waterproof and oil-proof agent FGC-606.

[0065] The principle is: without pre-treating the silicone leather fabric, the waterproof and oil-proof coating is directly sprayed onto its surface.

[0066] Comparative Example 2

[0067] A method for preparing a waterproof and oil-proof silicone leather pad for home use comprises the following steps:

[0068] S1. Dry, trim, and iron the silicone leather fabric, then cool it naturally for use;

[0069] S2, pre-treating the silicone leather fabric treated in step S1 through a pre-treatment device to obtain pre-treated silicone leather, wherein the pre-treatment is to increase the adhesion of the mixture on the surface of the silicone leather fabric;

[0070] The mixture includes 100% water-based polyurethane adhesive.

[0071] The specific pretreatment method of silicone leather fabric by pretreatment equipment is as follows:

[0072] Step 1: Grind the surface of the silicone leather fabric smooth using a grinding component, and collect the silicone leather scraps generated by grinding using a recycling component;

[0073] Step 2: The collected silicone leather scraps are transported to the spraying assembly and fully mixed with the adhesive and then sprayed on the polished silicone leather surface. After drying in the drying box 26 and cooling in the cooling box 27, pretreated silicone leather is obtained.

[0074] S3, spraying a waterproof and oil-proof coating onto the surface of the pretreated silicone leather to form a protective layer, laying a mesh cloth, and then drying, hot pressing and cooling to obtain the waterproof and oil-proof silicone leather;

[0075] S4, leather pad is sewn from waterproof and oil-proof silicone leather.

[0076] In this embodiment, the waterproof and oil-proof coating is made of waterproof and oil-proof agent FGC-606.

[0077] The principle is: the silicone leather fabric is pretreated, but the silicone leather scraps obtained in the pretreatment are only collected and not mixed in the adhesive, that is, the mixture only uses the adhesive.

[0078] Experimental testing

[0079] The waterproof and oil-proof silicone leathers prepared in Examples 1-3 and Comparative Examples 1-2 were tested separately. However, the waterproof and oil-proof silicone leather samples were first beaten by a beating device before testing. The beating frequency was 95 times / min, the beating time was 18 hours, and the beating force was 20N. The specific tests were as follows:

[0080] Waterproof test: Waterproof test is carried out according to the test method of GB / T40936-2021;

[0081] Oil resistance test: The oil resistance test is carried out according to the test method of "QB / T2707-2005".

[0082] The test results are shown in Table 1:

[0083]

[0084]

[0085] Note: The above data have been verified by variance.

[0086] Experimental results: According to the data in the table, pre-treating the silicone leather fabric before spraying the waterproof and oil-proof coating can improve the adhesion of the mixture on the surface of the silicone leather fabric, thereby improving the stability of the protective layer formed by spraying the waterproof and oil-proof coating, making it less likely to crack and fall off during long-term use, and the sewn waterproof and oil-proof silicone leather pad is more durable.

[0087] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A method for preparing a waterproof and oil-proof silicone leather pad for household use using a pretreatment device, characterized in that: The pretreatment equipment comprises a discharge roller (1), a grinding assembly arranged on the output side of the discharge roller (1), a conveying roller (4) arranged on the output side of the grinding assembly, two first support rollers (3) arranged between the discharge roller (1) and the conveying roller (4) and respectively located on both sides of the grinding assembly, a recovery assembly connected to the grinding assembly, a plurality of second support rollers (5) arranged on the output side of the conveying roller (4), a spraying assembly arranged between two of the second support rollers (5) and used to be connected to the recovery assembly, a collecting assembly for collecting a mixture, a drying box (26) arranged on the output side of the spraying assembly, a cooling box (27) arranged on one side of the drying box (26), and a receiving roller (2) arranged on one side of the cooling box (27) for winding up the pretreated silicone leather; The grinding assembly comprises a door frame plate (6), two hydraulic cylinders (7) arranged at the top of the door frame plate (6), a horizontal plate (8) connected to the bottom of the output shafts of the two hydraulic cylinders (7), a dust suction pipe (10) passing through the horizontal plate (8) and the top of the door frame plate (6), a grinding piece (9) arranged at the bottom of the dust suction pipe (10), a bottom supporting plate (14) arranged on the inner side walls of the door frame plate (6) and located below the horizontal plate (8), a fixed cylinder (13) arranged at the top of the door frame plate (6) and a power piece for driving the dust suction pipe (10) to rotate, and the dust suction pipe (10) is rotatably connected to the horizontal plate (8), the door frame plate (6) and the fixed cylinder (13) through bearings; The power member includes a motor (11) provided on the horizontal plate (8), a gear (12) sleeved on the output shaft of the motor (11) and the dust suction pipe (10) and meshing with each other, the grinding member (9) includes a grinding disc (91), a dust suction chamber (92) provided inside the grinding disc (91), a dust suction port (93) provided at the bottom of the grinding disc (91) and connected to the dust suction chamber (92), a plurality of support plates (94) provided inside the dust suction chamber (92), and a rolling ball (95) for assisting the grinding disc (91) in rotating between two adjacent support plates (94) via a bearing, the inner cavity of the rolling ball (95) being hollow and having a plurality of dust suction holes (96) provided on its outer wall, the dust suction pipe (10) being connected to the dust suction chamber (92), and an air flow channel being left between the upper portion of the support plate (94) and the inner top wall of the dust suction chamber (92); The preparation method comprises the following steps: S1. Dry, trim, and iron the silicone leather fabric, then cool it naturally for use; S2, pre-treating the silicone leather fabric treated in step S1 through a pre-treatment device to obtain pre-treated silicone leather, wherein the pre-treatment is to increase the adhesion of the mixture on the surface of the silicone leather fabric; Among them, the pretreatment method of the pretreatment equipment for silicone leather fabric is specifically as follows: Step 1: Grind the surface of the silicone leather fabric smooth using a grinding component, and collect the silicone leather scraps generated by grinding using a recycling component; Step 2: The collected silicone leather scraps are transported to a spraying assembly, fully mixed with the adhesive, and then sprayed on the polished silicone leather surface. After drying in a drying oven (26) and cooling in a cooling oven (27), pretreated silicone leather is obtained; S3, spraying a waterproof and oil-proof coating onto the surface of the pretreated silicone leather to form a protective layer, laying a mesh cloth, and then drying, hot pressing and cooling to obtain the waterproof and oil-proof silicone leather; S4, leather pad is made of waterproof and oil-proof silicone leather.

2. The method for preparing a household waterproof and oil-proof silicone leather pad using a pretreatment device according to claim 1, characterized in that: The recovery assembly comprises a conveying pipe (15) connected to the fixed cylinder (13), a cyclone separator (16) connected to the conveying pipe (15), a storage box (17) connected to the dust discharge port of the cyclone separator (16), and a material pipe (18) provided on the storage box (17).

3. The method for preparing a household waterproof and oil-proof silicone leather pad using a pretreatment device according to claim 2, characterized in that: The spray assembly comprises a mixing box (19) connected to a material pipe (18), an output pipe (20) provided at the bottom of the mixing box (19), a transverse pipe (23) provided at the bottom of the output pipe (20), and a plurality of high-pressure nozzles (24) provided on the transverse pipe (23); a delivery pump (21) is provided on the output pipe (20); and control valves (22) are provided on both the material pipe (18) and the output pipe (20).

4. The method for preparing a household waterproof and oil-proof silicone leather pad using a pretreatment device according to claim 3, characterized in that: The collection assembly comprises a transparent collection box (253), a collection tube (252) connected to the transparent collection box (253), and a collection cover (251) connected to the top of the collection tube (252) and protected outside the high-pressure nozzle (24) and the silicone leather fabric.

5. The method for preparing a household waterproof and oil-proof silicone leather pad using a pretreatment device according to claim 1, characterized in that: In step S2, the mixture includes 70% to 85% of adhesive and 15% to 30% of silicone leather scraps.

6. The method for preparing a household waterproof and oil-proof silicone leather pad using a pretreatment device according to claim 5, characterized in that: The adhesive is one of water-based polyurethane adhesive, acrylic adhesive and chloroprene rubber adhesive.

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