A toilet elbow production mold and its manufacturing process

Abstract

The present invention relates to a toilet elbow production mold and a manufacturing process thereof, including a left mold and a right mold, the left mold including a drainage and exhaust inner layer and a waterproof and air-proof layer stacked from the inside to the outside, at least one air-permeable cavity is provided inside the drainage and exhaust inner layer or between the drainage and exhaust inner layer and the waterproof and air-proof layer, the left mold is provided with at least one air-permeable hole, and the air-permeable hole is connected to at least one air-permeable cavity. The present invention relates to the field of toilets, when the elbow is demoulded, compression molding air is injected through the air-permeable hole, and the air enters the air-permeable cavity through the air-permeable hole, and the waterproof and air-proof layer ensures that the gas does not flow to the back of the left mold, and all the gas flows to one side of the elbow through the drainage and exhaust inner layer, so that a larger air mold is formed between the elbow and the left mold, and the elbow is automatically separated from the left mold through the air mold; the technical problem that the toilet elbow is difficult to demould and is easy to cause damage to the elbow or the toilet is solved.

Description

Technical Field

[0001] The invention relates to the field of toilets, and in particular to a toilet elbow production mold and a manufacturing process thereof. Background Art

[0002] refer to Figures 7 to 10 When the toilet 3 is manufactured, high-pressure mud is injected into the grouting port. After the product is kept under pressure for a certain period of time, since the mold material is a resin material with microporous characteristics, under a certain holding pressure, the moisture in the mold will be discharged from these micropores to form a relatively dry mud embryo. At this time, the mold fixed on the machine starts to move and open the mold of each component under the action of the oil cylinder. First, the upper mold 41 moves upward until it is separated from the product, then the lower mold 42 moves downward, and then the rear mold 43 moves backward to separate from the product. Since there is an undercut inside the toilet sewage pipe Therefore, this position is designed as a right sewage pipe movable block 45 and a left sewage pipe movable block 44, and a bend 31 (sewage pipe) is formed between the left sewage pipe movable block and the right sewage pipe movable block. The right sewage pipe movable block 45 and the left sewage pipe movable block 44 are respectively adsorbed together with the rear mold 43 by magnets arranged on the mold and the movable block. When the rear mold 43 moves backward, when the demoulding force is greater than the magnet attraction, the rear mold and the right sewage pipe movable block 45 and the left sewage pipe movable block 44 are disengaged, and the right sewage pipe movable block and the left sewage pipe movable block are left in the inner cavity of the toilet at this time (reference Fig. 9 ), then the embryo support equipment moves forward and upward and is placed directly below the toilet embryo. At this time, it should be ensured that the embryo support plate is just slightly in contact with the lower end surface of the toilet, and there should be no gap or hard squeezing of the embryo toilet. At this time, the toilet is fastened to the grouting machine by the right mold and the left mold. Since the embryo support is in place, the left mold 46 and the right mold 47 can be separated to the left and right sides at this time, and the toilet blank falls on the embryo support plate. Move the embryo support plate to the embryo placement station, and manually take out the live block inside. At this point, a toilet embryo product production cycle is completed. However, when the left sewage pipe movable block and the right sewage pipe movable block are demolded, due to the large negative pressure between the left sewage pipe movable block and the limited space at the sewage pipe in the toilet, it is difficult to easily demold the left sewage pipe movable block and the right sewage pipe movable block, resulting in the product often getting stuck in the mold. On-site workers need to spend more time to remove the mold from the product, which not only affects efficiency. If too much force is used for hard demolding, it may cause the left sewage pipe movable block or the right sewage pipe movable block to collide with the toilet, causing wear or damage to the toilet, and may even cause the sewage pipe to deform and damage, affecting the quality and appearance of the product.

[0003] Chinese Patent Application No.: 202020997128.0 discloses a toilet mold, including a bottom mold, a top mold, a right side mold and a left side mold, wherein the bottom mold is arranged at the lower part of the toilet mold, the right side mold and the left side mold are arranged on both sides of the bottom mold respectively, the bottom mold and the right side mold and the left side mold form a closed cavity, the top mold is detachably arranged at the upper part of the closed cavity, the top mold includes two movable block groups arranged symmetrically, the movable block group includes a first movable block and a second movable block, and the first movable block and the second movable block are arranged in sequence from the rear to the front of the closed cavity. The molds on both sides of the sewage pipe of the toilet need to be demolded to both sides. Due to limited space and large negative pressure, it is not easy to demold, and forced demolding can easily cause wear and damage to the toilet and deformation and damage to the sewage pipe. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention provides a toilet elbow production mold and a manufacturing process thereof, which solves the technical problems that the toilet elbow is difficult to demould and easily causes damage to the elbow or toilet.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A toilet elbow production mold includes a left mold and a right mold. The left mold includes a drainage and exhaust inner layer and a waterproof and air-proof layer stacked from the inside to the outside. At least one breathable cavity is provided inside the drainage and exhaust inner layer or between the drainage and exhaust inner layer and the waterproof and air-proof layer. The left mold is provided with at least one air hole, which is connected to at least one air permeable cavity. The drainage and exhaust inner layer is provided with a left mold core.

[0007] Further:

[0008] The outer layer of the waterproof and air-proof layer is superimposed with an external layer.

[0009] The outer layer is made of a microporous resin material.

[0010] The outer side of the outer layer has a draft angle.

[0011] The drainage and air-venting inner layer is made of a microporous resin material, and the drainage and air-venting inner layer has the functions of being water-permeable and air-permeable.

[0012] The waterproof and air-proof layer is made of a resin material and has waterproof and air-proof functions.

[0013] The structures of the right mold and the left mold are symmetrical.

[0014] A manufacturing process for a toilet elbow production mold comprises the following steps:

[0015] (1) First, an upper template and a lower template are used, wherein the lower template has a cavity opening upward, the top of the lower template is provided with a convex shape corresponding to the left mold core, the bottom of the upper template is provided with a concave shape corresponding to the left mold core, and a plurality of fixing parts are detachably fixed to the bottom of the upper template or the top of the lower template, at least one soft strip and a breathable duct are fixed to the fixing parts, the upper template is covered on the lower mold cavity, and a thick microporous resin is poured into the cavity. After cooling, a drainage and exhaust inner layer is formed;

[0016] (2) Remove the upper template and apply a layer of waterproof and air-proof resin on the back of the drainage and exhaust inner layer. After cooling, the waterproof resin forms a waterproof and air-proof layer;

[0017] (3) Then, a thick layer of microporous resin is poured on the waterproof and air-proof layer, and after cooling, an outer layer is formed, and the left mold is initially formed;

[0018] (4) removing the left mold from the lower mold plate, removing the air duct, and forming an air hole after the air duct is detached, and pulling the soft strip out of the air hole, and forming at least one air cavity after the soft strip is detached, thereby completing the left mold;

[0019] (5) According to the manufacturing process of the left mold, the right mold is manufactured.

[0020] In step (1), a plurality of small magnetic blocks are arranged at the bottom of the upper template or the top of the lower template, the fixing member can be a wire rack, the magnetic blocks fix the wire rack by magnetic force, the soft strip can be a solid rubber band, the rubber band is fixed to the wire rack, and the rubber band is arranged along the small magnetic blocks; one end of different rubber bands can be tied and connected to each other, and at least one rubber band is fixed and tied to the ventilation duct, and the rubber band is pulled out of the vent through the ventilation duct, and the wire rack becomes a part of the inner layer of drainage and exhaust, and the wire rack can be made of magnetic material.

[0021] When arranging the soft strips, wax can be applied on them to facilitate their removal.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are:

[0023] When the present invention uses multiple molds to produce toilets, during high-pressure grouting, a closed space is formed inside, and moisture in the product is sucked out with greater suction. The moisture generated between the left mold and the right mold can penetrate into the breathable cavity through the micropores of the drainage and exhaust inner layer, and the water is discharged from the breathable holes, which is beneficial to the discharge of moisture in the product during production, so that the left mold and the right mold are more closely fitted to the elbow. The produced elbow has a high density, good pressure resistance, and is not easy to deform, thereby improving the quality of the elbow. A toilet elbow is formed between the left mold and the right mold. When the left mold and the right mold are removed, the elbow needs to be separated from the left mold and the right mold. The adsorption force of the elbow and each part between the left mold and the right mold is large, and compression air is injected through the breathable holes. Air enters through the breathable holes The breathable cavity has a waterproof and air-proof layer, which ensures that the gas does not flow to the back of the left mold. All the gas flows to the side of the elbow through the drainage and exhaust inner layer, so that a larger air mold is formed between the elbow and the left mold. The injected air automatically separates the elbow from the left mold through the air mold, ensuring that the elbow is evenly ejected in all parts, preventing the left mold from being partially stuck on the elbow. This demolding method is fast and simple, saving manpower and material resources. At the same time, it prevents damage to the elbow or toilet during demolding, and realizes automatic demolding by injecting compressed air. If the breathable cavity is set in the drainage and exhaust inner layer, and the waterproof and air-proof layer is not set on the left mold, when air is injected through the air vents, most of the compressed air will be discharged from the left mold. The back exhaust cannot realize the easy demoulding of the product and the mold, causing the product to be stuck on the left mold. The on-site workers need to spend more time to remove the left mold from the product, which not only affects the efficiency, but also easily causes deformation and damage to the product during hard demoulding; further, the outer layer has the function of improving the mold strength, and the outer side of the outer layer has a demoulding slope, which is in contact with other molds for a long time, and has the function of protecting the waterproof and air-proof layer; further, the structures of the right mold and the left mold are symmetrical, and the right mold can be demoulded by the same method as the left mold, which is simple and practical; further, when manufacturing the left mold, the bottom of the upper mold plate is provided with a concave shape corresponding to the left mold core, so that when the drainage and exhaust inner layer of the left mold is manufactured, the two sides of the drainage and exhaust inner layer correspond to the structure of the left membrane core, so that the drainage and exhaust The thickness of each part of the inner layer is not much different, which is conducive to keeping the distance between each part of the air-permeable cavity and the product the same. The pressure of water penetrating into the air-permeable cavity from each part of the left mold is not much different, which is conducive to water penetrating into the air-permeable cavity from each part of the drainage and exhaust inner layer, which is conducive to the discharge of a large amount of water. At the same time, it is conducive to the gas from the air-permeable cavity to penetrate into the product more evenly, so that a larger air mold is formed between the elbow and the left mold, which is conducive to the demoulding of the product. If a certain part of the inner surface of the left mold is far away from the air-permeable cavity, the gas at this position has a large resistance to entering the elbow through the drainage and exhaust inner layer, and it is difficult for the gas at this position to enter the elbow, which may cause the product to be partially stuck on the left mold; further, the manufacturing process of the left mold is simple and the manufacturing cost is low;Furthermore, the wire frame can be made of a magnetic material, so that the wire frame is magnetic, and the manufactured left mold is magnetic. When producing a toilet, the rear mold is adsorbed together with the left mold and the right mold by a magnet, so there is no need to install magnets on the left mold and the right mold, which is conducive to the connection and demoulding of the rear mold with the left mold and the right mold. ; BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the left mold;

[0025] Figure 2 This is the structural diagram of the left mold in the other direction

[0026] Figure 3 This is an exploded view of the three-layer structure of the left mold;

[0027] Figure 4 This is an exploded view of the three-layer structure of the left mold from another angle;

[0028] Figure 5 is a cross-sectional view of the left mold;

[0029] Figure 6 It is a schematic diagram of the structure of the wire rack;

[0030] Figure 7 This is a schematic diagram of the structure of the toilet during grouting;

[0031] Figure 8 yes Figure 7 Schematic diagram of the decomposition structure;

[0032] Fig. 9 It is a schematic diagram of the structure when the left sewage pipe movable block and the right sewage pipe movable block are not demoulded;

[0033] Fig.10 It is a schematic diagram of the structure of the elbow. DETAILED DESCRIPTION

[0034] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0035] refer to Figures 1 to 10 This embodiment provides a toilet elbow production mold, including a left mold 1 and a right mold. The right mold is symmetrical with the left mold 1. The left mold 1 includes a drainage and exhaust inner layer 11 and a waterproof and air-proof layer 12 stacked from the inside to the outside. The drainage and exhaust inner layer 11 is provided with a plurality of air-permeable cavities 14, and the plurality of air-permeable cavities 14 are densely distributed in the drainage and exhaust inner layer 11. The left mold 1 is provided with an air hole 15, and the air hole 15 is connected to at least one air-permeable cavity 14. The drainage and exhaust inner layer 11 is provided with a left mold core 16. The outer layer of the waterproof and air-proof layer 12 is stacked with an outer layer 13, and the outer side of the outer layer 13 has a demoulding slope.

[0036] The number of the air-permeable cavity 14 may be one, two or even more. The air-permeable cavity 14 may be of different shapes and structures, which may be configured according to specific circumstances.

[0037] The above-mentioned air vent 15 can be one, two or even more. Usually, one air vent 15 is provided to facilitate the infusion of gas, and the specific provision is made according to the situation.

[0038] The drainage and ventilation inner layer 11 is made of microporous resin material or other materials. The drainage and ventilation inner layer 11 has the function of being water-permeable and breathable. It is a well-known material and will not be described in detail here.

[0039] The waterproof and air-proof layer 12 is made of resin material or other materials. The waterproof and air-proof layer 12 has waterproof and air-proof functions and is a well-known material, which will not be described in detail here.

[0040] The above-mentioned right mold can also be other structures. Since half of the bent pipe 31 is exposed to the outside world after the left mold 1 is demolded, the right mold can be demolded by other means. Usually, the structures of the left mold 1 and the right mold are made into symmetrical structures, which is not only convenient for production and ensures that the quality of the produced bent pipes is high, but also prevents the right mold from being stuck on the bent pipe 31 and difficult to demold after the left mold 1 is demolded. The core of the right mold can be different from the left core 16 of the left mold 1, depending on the shape of the bent pipe.

[0041] The outer layer of the waterproof and air-proof layer 12 may not be superimposed with an outer layer 13. The outer layer 13 has the function of improving the mold strength and protecting the waterproof and air-proof layer 12, and is specifically provided according to the situation.

[0042] The thickness of the drainage and ventilation inner layer 11 is usually greater than 1 cm, so as to prevent the drainage and ventilation inner layer 11 from being deformed or damaged due to insufficient bearing capacity due to the thickness being too small during production.

[0043] The outer layer 13 is made of microporous resin material or other materials. The outer layer 13 is usually made of the same material as the drainage and air-venting inner layer 11 , which is a well-known material and will not be described in detail herein.

[0044] A manufacturing process for a toilet elbow production mold comprises the following steps:

[0045] (1) First, an upper template and a lower template are used. The lower template has a cavity with an opening upward. The top of the lower template is provided with a convex shape corresponding to the left mold core 16. The bottom of the upper template is provided with a concave shape corresponding to the left mold core 16. The bottom of the upper template or the top of the lower template is provided with a plurality of arranged small magnetic blocks. The small magnetic blocks are integrally formed with the upper template or the lower template. Each magnetic block can be fixed to a fixing member by magnetic force. The fixing member is a wire rack. The wire rack can be made of a magnetic material. At least one soft strip is fixed to the plurality of wire racks. The soft strip is arranged along the small magnetic blocks. The cloth, the soft strip can be made of solid rubber bands, and one end of different rubber bands can be tied and connected to each other. The air permeable pipe is fixed on the wire frame, and at least one rubber band is fixed and tied to the air permeable pipe. Waxing is applied on the soft strip to facilitate the extraction of the soft strip. The upper mold plate is covered on the lower mold cavity, and thick microporous resin is poured into the cavity. After cooling, a drainage and exhaust inner layer 11 is formed, and the wire frame becomes a part of the drainage and exhaust inner layer 11. The two sides of the drainage and exhaust inner layer 11 correspond to the structure of the left membrane core, and the distance between each part of the air permeable cavity 14 and the product is kept the same;

[0046] (2) Remove the upper template and apply a thin layer of waterproof and air-proof resin on the back of the drainage and exhaust inner layer 11. After cooling, the waterproof resin forms a waterproof and air-proof layer 12;

[0047] (3) Then, a thick layer of microporous resin is poured on the waterproof and airproof layer 12, and after cooling, an outer layer 13 is formed, and the left mold 1 is preliminarily formed;

[0048] (4) The left mold 1 is removed from the lower mold plate, and the air duct is removed. After the air duct is detached, an air hole 15 is formed. The soft strip is pulled out from the air hole 15. After the soft strip is detached, at least one air cavity 14 is formed, and the left mold 1 is manufactured;

[0049] (5) According to the manufacturing process of the left mold 1, the right mold is manufactured.

[0050] refer to Figure 6 The wire rack 2 includes a base 21 connected to the small magnetic block by adsorption, a connecting rod 22 arranged on the base 21, and a clamping portion 23 arranged on the connecting rod 22. The clamping portion 23 is provided with a clamping groove 24, and the rubber band can be clamped in the clamping groove 24. The wire rack can also adopt other structures, which are well-known structures and will not be repeated here.

[0051] The above-mentioned upper template and the above-mentioned lower template are well-known structures and will not be described in detail here.

[0052] The above-mentioned air permeable pipe can adopt a solid column or other structures, which are well-known structures and will not be described in detail here.

[0053] The above-mentioned soft strip can be a solid rubber band or other linear components, which is a well-known structure and will not be described in detail here.

[0054] The above-mentioned ventilating cavity 14 can also be arranged between the above-mentioned drainage and air-venting inner layer 11 and the above-mentioned waterproof and air-proof layer 12. The specific process is as follows:

[0055] (1) First, an upper mold and a lower mold are used. The lower mold has a cavity with an opening upward. The top of the lower mold is provided with a convex shape corresponding to the left mold core, and the bottom of the upper mold is provided with a concave shape corresponding to the left mold core. The upper mold is covered on the lower mold cavity, and a thick microporous resin is poured into the cavity. After cooling, a drainage and ventilation inner layer is formed. The two sides of the drainage and ventilation inner layer correspond to the structure of the left membrane core, and the distance between each part of the breathable cavity and the product is kept the same;

[0056] (2) arranging a plurality of soft strips and a breathable pipe on the drainage and exhaust inner layer, at least one of the soft strips is connected to the breathable pipe, and then applying a layer of waterproof and air-proof resin on the back of the soft strip, and the waterproof resin forms a waterproof and air-proof layer;

[0057] (3) Then, a thick layer of microporous resin is poured on the waterproof and air-proof layer to form an outer layer for drainage and exhaust, and after cooling, the left mold is formed;

[0058] (4) The air vent is taken out, and an air hole is formed after the air vent is detached; the soft strip is pulled out, and an air vent cavity is formed after the soft strip is detached.

[0059] (5) According to the manufacturing process of the left mold, the right mold is manufactured.

[0060] Although this method has a relatively simple production process and does not require a wire frame and the upper mold does not need to be equipped with small magnetic blocks, the soft strips are not easy to arrange and fix, and the waterproof and air-proof layer needs to be thicker, the manufacturing cost is high, and the waterproof and air-proof layer is subjected to a large force from water and gas for a long time, which can easily damage the waterproof and air-proof layer.

[0061] The working mode of the present invention is:

[0062] When the toilet 3 is produced, during high-pressure grouting, the toilet 3 is produced through multiple molds, and a curved pipe 31 of the toilet 3 is formed between the left mold 1 and the right mold. A closed space is formed inside the left mold 1 and the right mold, and the moisture in the product is sucked out with greater suction. The moisture generated between the left mold 1 and the right mold can penetrate into the breathable cavity 14 through the micropores of the drainage and exhaust inner layer 11, and the water is discharged from the breathable hole 15, which is conducive to removing the moisture in the product during production, so that the density of the produced curved pipe is large, the pressure resistance is good, it is not easy to deform, and the quality of the curved pipe is improved; the curved pipe is removed During molding, compression molding air is injected through the air vent 15, and the air enters the air permeable cavity 14 through the air vent 15. Due to the waterproof and air-proof layer 12, all the gas flows through the drainage and exhaust inner layer 11 to the side of the bent pipe, so that a larger air mold is formed between the bent pipe and the left mold 1. The injected air automatically separates the bent pipe from the left mold 1 through the air mold, ensuring that the bent pipe is evenly ejected at all parts, preventing the left mold 1 from being partially stuck on the bent pipe. This demolding method is quick and simple, saves manpower and material resources, and will not damage the toilet and the bent pipe.

[0063] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A toilet elbow production mold, comprising a left mold and a right mold, characterized in that: The left mold includes a drainage and ventilation inner layer and a waterproof and air-proof layer stacked from the inside to the outside, at least one breathable cavity is provided inside the drainage and ventilation inner layer or between the drainage and ventilation inner layer and the waterproof and air-proof layer, the left mold is provided with at least one air hole, the air hole is connected to at least one air-permeable cavity, the drainage and ventilation inner layer is provided with a left mold core, an outer layer is stacked on the outer layer of the waterproof and air-proof layer, the outer side of the outer layer has a demolding slope, two sides of the drainage and ventilation inner layer correspond to the structure of the left membrane core, and the thickness of the drainage and ventilation inner layer is greater than 1 cm.

2. A toilet elbow production mold according to claim 1, characterized in that: The outer layer is made of a microporous resin material.

3. A toilet elbow production mold according to claim 1, characterized in that: The drainage and air-venting inner layer is made of a microporous resin material, and the drainage and air-venting inner layer has the functions of being water-permeable and air-permeable.

4. A toilet elbow production mold according to claim 1, characterized in that: The waterproof and air-proof layer is made of a resin material and has waterproof and air-proof functions.

5. A toilet elbow production mold according to any one of claims 1 to 4, characterized in that: The structures of the right mold and the left mold are symmetrical.

6. A manufacturing process for a toilet elbow production mold according to claim 1, comprising the following steps: (1) First, an upper template and a lower template are used. The lower template has a cavity with an opening upward. The top of the lower template is provided with a convex shape corresponding to the left mold core, and the bottom of the upper template is provided with a concave shape corresponding to the left mold core. A plurality of fixing parts are detachably fixed to the bottom of the upper template or the top of the lower template. At least one soft strip and a breathable duct are fixed to the fixing parts. The upper template cover is set on the lower mold cavity, and a thick microporous resin is poured into the cavity. After cooling, a drainage and exhaust inner layer is formed; (2) Remove the upper template and apply a layer of waterproof and air-proof resin on the back of the drainage and exhaust inner layer. After cooling, the waterproof resin forms a waterproof and air-proof layer; (3) Then, a thick layer of microporous resin is poured on the waterproof and air-proof layer. After cooling, the outer layer is formed, and the left mold is initially formed; (4) The left mold is removed from the lower mold plate, the air duct is removed, and the air duct is separated to form an air hole. The soft strip is pulled out from the air hole. After the soft strip is separated, at least one air cavity is formed to manufacture the left mold; (5) Manufacture the right mold according to the manufacturing process of the left mold.

7. The manufacturing process of a toilet elbow production mold according to claim 6, characterized in that: In step (1), a plurality of small magnetic blocks are arranged at the bottom of the upper template or the top of the lower template, the fixing member can be a wire rack, the magnetic blocks fix the wire rack by magnetic force, the soft strip can be a solid rubber band, the rubber band is fixed to the wire rack, and the rubber band is arranged along the small magnetic blocks; one end of different rubber bands can be tied and connected to each other, and at least one rubber band is fixed and tied to the ventilation duct, and the rubber band is pulled out of the vent through the ventilation duct, and the wire rack becomes a part of the inner layer of drainage and exhaust, and the wire rack can be made of magnetic material.

8. The manufacturing process of a toilet elbow production mold according to claim 7, characterized in that: When arranging the soft strips, wax can be applied on them to facilitate their removal.

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