A thermosetting material coated plate for a brick machine pallet and a method of manufacturing the same

Abstract

The application discloses a kind of thermosetting material cladding plates for brick machine backing plate, including the cladding layer made of thermosetting material and the inner core layer made of bamboo-wood material, cladding layer is provided with exhaust through-hole, exhaust through-hole is provided with sealing element, inner core layer is formed by the parallel stacking of several vertically arranged bamboo-wood pieces, exhaust groove is provided on bamboo-wood piece, except the end bamboo-wood piece far from exhaust through-hole, the exhaust hole of the rest of bamboo-wood piece is communicated with exhaust groove, and each exhaust hole is communicated to form exhaust passage.The preparation method includes, preparation bamboo-wood piece, preparation inner core layer, lay material, forming, finished product, finally cladding plate is obtained.The advantages are that: structure is reasonable, it includes the cladding layer made of thermosetting material and the inner core layer made of bamboo-wood material, and exhaust structure is arranged in inner core layer, to discharge the moisture evaporated in bamboo-wood material during hot pressing, so that hot pressing forming becomes possible, can greatly reduce production cost and production equipment investment;Preparation method is simple, and production cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite cladding plate, in particular to a thermosetting material cladding plate for brick machine supporting plate and a preparation method thereof. BACKGROUND

[0002] Some plate application environment is relatively poor, such as brick machine supporting plate. The brick machine supporting plate is a tool necessary for manufacturing bricks. When the bricks are made, the environment is high temperature and high humidity. The original brick machine supporting plate is mostly made of solid wood or bamboo splices. However, the high temperature and high humidity working environment can easily cause deformation and cracking of wood and bamboo.

[0003] The current brick machine supporting plate is mostly molded from thermoplastic material. Since the thermoplastic material is easy to obtain (some recycled materials can be used), the strength of the brick machine supporting plate made of thermoplastic material is poor, and the wear resistance is poor, resulting in a high damage rate of the brick machine supporting plate. Some manufacturers use thermosetting materials to make brick machine supporting plates. The strength and wear resistance of the brick machine supporting plate made of thermosetting material are improved, but the production cost is also greatly increased.

[0004] In order to overcome the problem of high production cost caused by using thermosetting material entirely, some manufacturers use bamboo and wood materials as internal fillings to save production costs. Since the bamboo and wood materials contain moisture, if the multi-layer bamboo and wood materials are pressed by using a hot pressing process, the moisture in the bamboo and wood materials is preheated and evaporated to generate pressure, which causes the layers to be unable to be compacted and pressed into shape. Therefore, the existing composite plate of bamboo and wood materials can only be cold-pressed into shape. However, the cold-pressing equipment has high investment cost and poor economic benefits. SUMMARY

[0005] The purpose of the present application is to overcome the above-mentioned shortcomings and disclose a thermosetting material cladding plate for brick machine supporting plate and a preparation method thereof. An exhaust structure is arranged in the bamboo and wood inner core of the cladding plate to solve the problem of moisture evaporation in the bamboo and wood materials during the hot pressing process, so as to realize hot pressing of the bamboo and wood materials and greatly reduce the production cost and production equipment investment.

[0006] The technical scheme of the present application is as follows:

[0007] A thermosetting material cladding plate for brick machine supporting plate comprises a cladding layer made of thermosetting material and an inner core layer made of bamboo and wood material. An exhaust hole is arranged on the cladding layer, and a sealing element is arranged on the exhaust hole. The inner core layer is composed of a plurality of vertically arranged bamboo and wood pieces arranged side by side. An exhaust groove is arranged on the bamboo and wood piece. Except for the end bamboo and wood piece far away from the exhaust hole, the remaining bamboo and wood pieces are provided with exhaust holes communicating with the exhaust groove. The exhaust holes communicate to form an exhaust channel.

[0008] Further optimization measures of the technical solution are:

[0009] As an improvement, the exhaust groove is arranged along the axial direction of the bamboo wood piece.

[0010] As an improvement, the two ends of the exhaust groove are gradually tapered from the inside to the outside.

[0011] As an improvement, the depth of the exhaust groove is less than one-half of the thickness of the bamboo wood piece and greater than one-third of the thickness of the bamboo wood piece.

[0012] As an improvement, the exhaust groove is arranged on the same side of each bamboo wood piece.

[0013] As an improvement, the exhaust holes on each bamboo wood piece are arranged staggered in the axial direction of the cladding plate.

[0014] As an improvement, the thickness of the cladding layer is 1-6mm.

[0015] As an improvement, the thermosetting material is SMC.

[0016] A preparation method of a thermosetting material cladding plate for a brick machine support plate, comprising the following steps:

[0017] Step 1, preparing bamboo wood pieces: preparing exhaust grooves and exhaust holes on the bamboo wood pieces;

[0018] Step 2, preparing an inner core layer: arranging and fixing the bamboo wood pieces side by side;

[0019] Step 3, laying material: laying thermosetting material on the bottom and four sides of the mold, then positioning and fixing the inner core layer in the mold, aligning the exhaust channel outlets of the inner core layer with the exhaust ports of the mold, and laying another layer of thermosetting material on the inner core layer;

[0020] Step 4, forming: heating, pressurizing and pressure maintaining the mold to make the thermosetting material solidify to form a cladding layer, and form exhaust through holes at the exhaust ports of the mold;

[0021] Step 5, finished product: filling and fixing a sealing member at the exhaust through holes to obtain a cladding plate.

[0022] In step 1, the bamboo wood pieces are pretreated, and the bamboo wood pieces are dried to evaporate part of the water contained in the bamboo wood pieces. Through pretreatment, the water content in the bamboo wood pieces is reduced to reduce the water evaporation during subsequent hot pressing.

[0023] The advantages of the present application compared with the prior art are:

[0024] The coating plate of the present invention has a reasonable structure, comprising a coating layer made of thermosetting material and an inner core layer made of bamboo and wood material, and an exhaust structure is provided in the inner core layer to discharge the moisture evaporated from the bamboo and wood material during hot pressing, making hot pressing possible and greatly reducing production costs and production equipment investment; its preparation method is simple and the production cost is low. Attached Figure Description

[0025] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0026] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0027] Figure 3 yes Figure 1 Schematic diagram of the structure of bamboo wood chips;

[0028] Figure 4 This is a cross-sectional view of Embodiment 2 of the present invention.

[0029] Reference numerals: Covering layer 1, Sealing component 11, Inner core layer 2, Bamboo and wood chips 3, Venting groove 3a, Venting hole 3b. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings:

[0031] Example 1, as Figures 1 to 3 As shown, a thermosetting material coating board for brick machine pallets includes a coating layer 1 made of thermosetting material and an inner core layer 2 made of bamboo and wood material. The coating layer 1 is provided with vent holes, and the vent holes are provided with sealing parts 11. The inner core layer 2 is composed of several vertically arranged bamboo and wood pieces 3 stacked side by side. Each bamboo and wood piece 3 is provided with a vent groove 3a. Except for the bamboo and wood piece 3 at the end far from the vent hole, the other bamboo and wood pieces 3 are provided with vent holes 3b communicating with the vent groove 3a. All vent holes 3b are interconnected to form a venting channel.

[0032] During the hot pressing of the cladding board, in order to allow the moisture inside the bamboo and wood chips 3 to escape from the vent of the mold, the venting channel of the inner core layer 2 needs to be connected to the vent of the mold. When the outer cladding layer 1, made of thermosetting material, is heated and cured, a venting hole will be left at the vent of the mold. In order to ensure the integrity and aesthetics of the cladding board surface, the venting hole is sealed with a sealing piece 11.

[0033] The exhaust groove 3a is arranged along the axial direction of the bamboo / wood strip 3. That is, the exhaust groove 3a is arranged along the length direction of the bamboo / wood strip 3, which can maximize the length of the exhaust groove 3a.

[0034] The two ends of the exhaust groove 3a gradually taper from the inside out. This design reduces stress concentration at the ends of the exhaust groove 3a, preventing the bamboo and wood material from cracking due to stress.

[0035] The depth of the venting groove 3a is less than half the thickness of the bamboo / wood slab 3, but greater than one-third the thickness of the bamboo / wood slab 3. If the venting groove 3a is too deep, it will affect the strength of the bamboo / wood slab 3, and thus the strength of the entire inner core layer 2 and the covering plate. If the venting groove 3a is too shallow, it will not provide enough space for moisture to release.

[0036] The exhaust grooves 3a are located on the same side of each bamboo or wood strip 3. This arrangement ensures that when the bamboo or wood strips 3 are stacked together, the exhaust grooves 3a are separated by the solid parts of the bamboo or wood strips 3, creating an intermittent arrangement.

[0037] The thickness of the coating layer 1 is 1-6 mm.

[0038] The thermosetting material mentioned is SMC.

[0039] Example 2, as Figure 4 As shown, the covering plate structure in this embodiment is similar to that in embodiment one. The difference is that, in this embodiment, in order to avoid the exhaust holes 3b being on the same straight line and causing local weak points in the exhaust channel of the covering plate, the exhaust holes 3b on each bamboo and wood piece 3 are staggered in the axial direction of the covering plate, thereby avoiding the exhaust holes 3b being on the same straight line.

[0040] Since the exhaust groove 3a is arranged along the axial direction of the bamboo and wood piece 3, even if the exhaust holes 3b are staggered, an effective exhaust channel can still be formed.

[0041] A method for preparing a thermosetting material-coated plate for brick machine pallets includes the following steps:

[0042] Step 1: Prepare bamboo and wood chips 3: Prepare exhaust grooves 3a and exhaust holes 3b on bamboo and wood chips 3.

[0043] Here, the bamboo and wood chips 3 can be pre-treated by drying to evaporate some of the moisture contained in them. The drying temperature is generally controlled between 103℃ and 150℃. Removing some moisture through drying reduces moisture evaporation during subsequent hot pressing and reduces exhaust pressure.

[0044] As an extension, the bamboo wood pieces 3 are dried multiple times until the mass is constant. The bamboo wood pieces 3 are weighed after cooling to room temperature, accurate to 0.01 g. The difference between the mass of the bamboo wood pieces 3 before and after drying is less than 0.1% of the mass of the bamboo wood pieces 3 after the last drying, that is, the mass is considered constant. Generally, when dried to a constant mass, the moisture content in the bamboo wood pieces 3 is less than 0.1% (moisture content: percentage of moisture in the weight of the bamboo wood pieces).

[0045] Step two, preparing the inner core layer 2: stacking and fixing the bamboo wood pieces 3 side by side;

[0046] Step three, laying material: laying the thermosetting material on the bottom and four sides of the mold, then positioning and fixing the inner core layer 2 in the mold, aligning the outlet of the exhaust passage of the inner core layer 2 with the exhaust port of the mold, and laying another layer of thermosetting material on the inner core layer 2;

[0047] Step four, forming: heating and pressurizing the mold, and maintaining the pressure for 10 to 15 minutes, so that the thermosetting material solidifies to form the cladding layer 1, and an exhaust through-hole is formed at the exhaust port of the mold;

[0048] Step five, finished product: filling and fixing the sealing member 11 at the exhaust through-hole to obtain the cladding plate.

[0049] The cladding plate of the present application has exhaust grooves 3a and exhaust holes 3b on the bamboo wood pieces 3, and when the bamboo wood pieces 3 are stacked together to form the inner core layer 2, the exhaust grooves 3a and exhaust holes 3b on each bamboo wood piece 3 are connected to form an exhaust passage. During the hot pressing of the cladding plate, the water vaporized from the bamboo material can be effectively discharged through the exhaust passage, avoiding the formation of local high pressure inside the cladding plate, and creating conditions for the hot pressing of the cladding plate with bamboo material as the inner core. This can greatly reduce production costs and equipment investment.

[0050] After hot pressing, the inner core layer 2 in the cladding plate is wrapped by the cladding layer 1 formed by the solidification of the outer thermosetting material. In the inner core layer 2, the bamboo wood pieces 3 are tightly stacked together, and the outer cladding layer 1 ensures the flatness and wear resistance of the surface. The cladding plate prepared by the preparation method of the present application has good strength and wear resistance, and is suitable for use in harsh environments such as brick machine support plates.

[0051] The above is only a preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. Those skilled in the art should be able to realize that any equivalent replacement and obvious changes made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A thermosetting material coating plate for brick machine pallets, characterized in that: The material includes a covering layer (1) made of thermosetting material and an inner core layer (2) made of bamboo and wood material. The covering layer (1) is provided with an exhaust hole and a sealing element (11) is provided on the exhaust hole. The inner core layer (2) is composed of several vertically arranged bamboo and wood pieces (3) stacked side by side. The bamboo and wood pieces (3) are provided with an exhaust groove (3a). Except for the bamboo and wood pieces (3) at the end far from the exhaust hole, the other bamboo and wood pieces (3) are provided with exhaust holes (3b) that communicate with the exhaust groove (3a). The exhaust holes (3b) are connected to form an exhaust channel. The exhaust holes (3b) on each bamboo and wood piece (3) are staggered in the axial direction of the covering plate.

2. The thermosetting material coating plate for brick machine pallets according to claim 1, characterized in that: The exhaust groove (3a) is arranged along the axial direction of the bamboo and wood strip (3).

3. The thermosetting material coating plate for brick machine pallets according to claim 2, characterized in that: The two ends of the exhaust groove (3a) are gradually tapering from the inside out.

4. The thermosetting material coating plate for brick machine pallets according to claim 3, characterized in that: The depth of the exhaust groove (3a) is less than half the thickness of the bamboo and wood strip (3) but greater than one-third the thickness of the bamboo and wood strip (3).

5. A thermosetting material coating plate for brick machine pallets according to claim 4, characterized in that: The exhaust groove (3a) is located on the same side of each bamboo and wood piece (3).

6. A thermosetting material coating plate for brick machine pallets according to claim 1, characterized in that: The thickness of the coating layer (1) is 1-6 mm.

7. A thermosetting material coating plate for brick machine pallets according to claim 1, characterized in that: The thermosetting material mentioned is SMC.

8. The method for preparing a thermosetting material coating plate for a brick machine pallet according to claim 1, characterized in that: Includes the following steps: Step 1: Preparation of bamboo and wood chips (3): Exhaust grooves (3a) and exhaust holes (3b) are made on the bamboo and wood chips (3); Step 2, Preparation of the inner core layer (2): Stack and fix the bamboo and wood pieces (3) side by side; Step 3, material laying: lay thermosetting material on the bottom and four sides of the mold, then place the inner core layer (2) into the mold and fix it in place. Align the outlet of the exhaust channel of the inner core layer (2) with the exhaust port of the mold, and lay another layer of thermosetting material on the inner core layer (2). Step 4, Molding: The mold is heated, pressurized, and held under pressure to solidify the thermosetting material to form a coating layer (1), and an exhaust vent is formed at the vent of the mold. Step 5, Finished product: Fill the vent hole with a fixing seal (11) to obtain the covering plate.

9. A method for preparing a thermosetting material coating plate for a brick machine pallet according to claim 8, characterized in that: In step one, the bamboo and wood chips (3) are pretreated and dried to evaporate some of the moisture contained in the bamboo and wood chips (3).

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