Isostatic pressing forming die for large-specification ceramic plate and using method of isostatic pressing forming die

Abstract

The invention discloses an isostatic pressing mold for large-size ceramic plates and a using method thereof, and belongs to the field of isostatic pressing of ceramic plates. The isostatic pressing mold comprises a supporting framework, a bearing box body, a pressing plate, a paper box, a rubber band, a sealing bag and a feeding opening. According to the method, the isostatic pressing process of the large-specification ceramic plate can be completed under the condition that no large press is provided, or although the large press is provided, the number of products is small, and a set of expensive special mold is not worthy of being specially customized, a large-pressure press and a metal mold are not needed, and the isostatic pressing process can be completed through simple manual operation; and the equipment investment cost required for manufacturing the large-specification ceramic plate is reduced.

Description

Technical Field

[0001] The invention relates to the field of isostatic pressing of ceramic plates, in particular to an isostatic pressing mould for large-sized ceramic plates and a use method thereof. Background Art

[0002] For the isostatic pressing process of large-sized ceramic sheets, a large pressure press is usually used to press the ceramic granulation powder into a cake, then pack it in a sealed bag and evacuate it before putting it into the isostatic press for densification and pressing. This process is usually used when the press is large enough and the product output demand is large enough to make a special pressing mold. If there is no large press, or if there is a large press, but the number of products is small and it is not worth making a set of expensive special molds, isostatic pressing of large-sized ceramic sheets is quite difficult, or even impossible. Summary of the invention

[0003] The purpose of the present invention is to solve the problems raised in the background technology, and to design an isostatic pressing mold for large-sized ceramic plates and a method of using the same.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is an isostatic pressing mold for large-sized ceramic plates, including a supporting frame, a carrying box, a pressure plate, a paper box, a rubber band, a sealing bag, and a feeding port. The carrying box is placed on the right side of the supporting frame, there are two pressure plates and they are respectively located on both sides of the paper box, the pressure plate is placed on the left side of the supporting frame, there are multiple rubber bands and the two pressure plates and the paper box are wrapped together, the inner side of the carrying box is the same size as the paper box, the sealing bag is the same size as the paper box and is installed on the inner side of the paper box, and a feeding port is left on the paper box, and the direction of the feeding port is consistent with the direction of the carrying box opening.

[0005] Furthermore, the supporting frame includes a left support, a baffle, and a right support, the pressure plate is placed on the left support, the carrying box is placed on the right support, the left side of the left support is fixedly connected to the baffle, the right side of the left support is fixedly connected to the right support, the height of the left support is higher than the height of the right support, and the height of the left support plus the thickness of the pressure plate is equal to the height of the right support plus the thickness of the bottom of the carrying box.

[0006] Furthermore, the carrying box includes a carrying body, a connecting plate, a cover plate, and connecting holes. The carrying body is fixedly connected to two connecting plates, and the cover plate is fixedly connected to another two connecting plates. The cross-section of the cover plate is consistent with the cross-section of the carrying body. The connecting plate is provided with connecting holes. The connecting plates on the carrying body correspond to the connecting plates on the cover plate, and the positions of the connecting holes correspond up and down.

[0007] Furthermore, an anti-skid step is provided on the pressing plate, and the anti-skid step is located on the right side of the pressing plate and is fixedly connected to the pressing plate.

[0008] Furthermore, the sealed bag in the paper box has at least two layers.

[0009] A method for using an isostatic pressing mold for large-sized ceramic plates, the method comprising the following steps:

[0010] Step 1: According to the size of the green billet, make a paper box, leave a feeding port and put it in a sealed bag, then make a carrying box, put the paper box in the carrying box and cover and tighten it, add materials to the paper box and vibrate it on a vibration platform until it is dense, seal the paper box and seal it with tape;

[0011] Step 2: Place the carrying box on the support frame and drag the carton onto a pressing plate. Vacuum the sealing bag and seal it layer by layer. Then cover the other side of the carton with the same pressing plate. Finally, tighten the carton between the two pressing plates with a rubber band.

[0012] Step 3: Use a hanger to place the fixed paper box into an isostatic press for pressing to obtain a large-sized square ceramic plate-shaped blank.

[0013] Beneficial effects:

[0014] The present invention provides an isostatic pressing mold for large-sized ceramic plates and a method for using the same, which has the following beneficial effects. The device is designed to cut and bend cardboard of a certain thickness according to the size of the green blank through its structural design, and then make a paper box, seal the edges and corners with tape, leave a feeding port and put at least two layers of sealed bags in, and the bag opening is in the same direction as the feeding port. Then make a bearing box with an upper cover, and the internal space is just enough to fit the paper box. The bearing box is filled with paper boxes, covered and tightened. Add materials to the paper box and vibrate it on a vibration platform until it is dense. Seal the paper box and seal it with tape, lay the bearing box flat, remove the upper cover, drag the paper box and the sealed bag out to the pressing plate, vacuum the vacuum bag and seal it layer by layer, and then cover the other side of the paper box with the same pressing plate, and finally fix the paper box between the two pressing plates with a rubber band. Put the fixed paper box into the isostatic press with a sling for pressing, and a large-sized square ceramic plate blank can be obtained. Compared with the prior art, the present invention can complete the isostatic pressing process for large-sized ceramic plates without a large press, or even if there is a large press, the number of products is small and it is not worth it to specially customize a set of expensive special molds. It does not require a large pressure press and a metal mold, and can be completed by simple manual operation, thereby reducing the equipment investment cost required to produce large-sized ceramic plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of an isostatic pressing mold for large-sized ceramic plates according to the present invention;

[0016] Figure 2 It is a schematic diagram of the exploded structure when the carton of the present invention is located in the load-bearing box;

[0017] Figure 3 It is a schematic diagram of the structure of the carton and two pressing plates of the present invention when they are integrated by being wrapped with rubber bands;

[0018] Figure 4 It is a structural schematic diagram of the support frame of the present invention.

[0019] In the figure, 1. supporting frame; 2. bearing box; 3. pressing plate; 4. paper box; 5. rubber band; 6. sealing bag; 7. feeding port; 8. anti-slip step; 101. left support; 102. baffle; 103. right support; 201. bearing body; 202. connecting plate; 203. cover plate; 204. connecting hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4The present invention provides a technical solution: an isostatic pressing mold for large-sized ceramic plates, comprising a supporting frame 1, a bearing box 2, a pressing plate 3, a paper box 4, a rubber band 5, a sealing bag 6, and a feeding port 7. The bearing box 2 is placed on the right side of the supporting frame 1. There are two pressing plates 3 and they are respectively located on both sides of the paper box 4. The pressing plate 3 is placed on the left side of the supporting frame 1. There are multiple rubber bands 5 and the two pressing plates 3 and the paper box 4 are wrapped together. The inner side of the bearing box 2 is the same size as the paper box 4. The sealing bag 6 is the same size as the paper box 4 and is installed on the inner side of the paper box 4. A feeding port 7 is left on the paper box 4, and the direction of the feeding port 7 is consistent with the direction of the opening of the bearing box 2.

[0024] In the present invention, the support frame 1 includes a left support 101, a baffle 102, and a right support 103. The pressing plate 3 is placed on the left support 101, and the carrying box 2 is placed on the right support 103. The left side of the left support 101 is fixedly connected to the baffle 102, and the right side of the left support 101 is fixedly connected to the right support 103. The height of the left support 101 is higher than the height of the right support 103. The height of the left support 101 plus the thickness of the pressing plate 3 is equal to the height of the right support 103 plus the thickness of the bottom of the carrying box 2. The baffle 102 can prevent the pressing plate 3 from sliding out of the support frame 1 during the horizontal pulling process. The height difference between the left support 101 and the right support 103 ensures that the paper box 4 has no step difference when being pulled out. A groove is left on the left support 101 on the left side of the support frame 1 to prevent the paper box 4 from being deformed when moving to the pressing plate 3 after vibration filling for some larger specifications, and it is convenient to tighten the rubber band 5 after vacuuming and covering the pressing plate 3.

[0025] In the present invention, the carrying box body 2 includes a carrying body 201, a connecting plate 202, a cover plate 203, and a connecting hole 204. The carrying body 201 is fixedly connected to two connecting plates 202, and the cover plate 203 is fixedly connected to the other two connecting plates 202. The cross section of the cover plate 203 is consistent with the cross section of the carrying body 201. The connecting plate 202 is provided with a connecting hole 204. The connecting plate 202 on the carrying body 201 corresponds to the connecting plate 202 on the cover plate 203, and the positions of the connecting holes 204 correspond up and down. The internal space of the carrying body 201 can just fit the paper box 4. After the cover plate 203 is closed, bolts are respectively penetrated through the connecting holes 204 on both sides of the corresponding connecting plates 202 on the carrying body 201 and the cover plate 203, and then fastened with nuts to add materials to the paper box 4.

[0026] In the present invention, an anti-skid step 8 is provided on the pressing plate 3, and the anti-skid step 8 is located on the right side of the pressing plate 3 and is fixedly connected to the pressing plate 3. When the two slings are lifting the paper box 4, the force-bearing parts will slide toward the middle, causing the paper box 4 to tip over when lifting. The anti-skid step 8 will prevent the slings from sliding toward the middle.

[0027] In the present invention, the sealing bag 6 in the paper box 4 is at least two layers, and the sealing bag 6 of at least two layers can prevent the single-layer sealing bag 6 from being scratched or leaking due to poor sealing when the paper box 4 is pulled out.

[0028] See also Figure 1-4 The method for isostatically pressing a large-sized ceramic plate using the above mold comprises the following steps:

[0029] Step 1: According to the size of the green blank, cut and bend a cardboard of a certain thickness, then make a paper box 4, leave a feeding port 7 and put at least two layers of sealed bags 6 in it, the bag opening of the sealed bag 6 is in the same direction as the feeding port 7 on the paper box 4. Then make a carrying box 2 with a cover, the inner space of the carrying box 2 can just fit the paper box 4. Put the paper box 4 into the carrying box 2, cover it and tighten it. Add materials to the paper box 4 and vibrate it on a vibration platform until it is dense, seal the paper box 4 and seal it with tape;

[0030] Step 2: Place the carrying box 2 flat on the right side of the supporting frame 1, and place the pressing plate 3 flat on the plane on the left side of the supporting frame 1. Then remove the cover plate 203 on the carrying box 2, pull the paper box 4 together with the sealing bag 6 flatly onto the pressing plate 3 for vacuuming and sealing, and then cover the other side of the paper box 4 with the same pressing plate 3, and use rubber bands 5 to tightly clamp the upper and lower pressing plates 3 and the paper box 4 to fix the paper box 4 between the two pressing plates 3;

[0031] Step 3: Stand the paper box 4 upright, place it on the anti-slip step 8 on the side of the pressing plate 3 with two identical slings, and use a sling to put the fixed paper box 4 into the isostatic press for pressing to obtain a large-sized square ceramic plate-shaped blank.

[0032] In this embodiment: first, according to the size of the green blank, a certain thickness of cardboard (according to the size of the plate, a cardboard with a thickness of 1.5-2.5mm is commonly used) is cut and bent, and then a paper box 4 is made, and the corners are bonded and sealed with adhesive tape, leaving a feeding port 7 and loading at least two layers of sealed bags 6, and the single-layer sealed bag 6 is prevented from scratching or leaking when the paper box 4 is pulled out by not less than two layers of sealed bags 6, and the bag opening of the sealed bag 6 is in the same direction as the feeding port 7 on the paper box 4. Make a bearing box 2 with a cover, and the internal space of the bearing box 2 is just loaded into the paper box 4. The paper box 4 is loaded into the bearing body 201 and covered with a cover plate 203. After the cover plate 203 is covered, bolts are used to penetrate the connecting holes 204 on both sides of the connecting plate 202 corresponding to each other on the bearing body 201 and the cover plate 203, and tightened with nuts. Add materials to the paper box 4 and vibrate on a vibration platform until dense.

[0033] After the vibration loading is completed, seal the feeding port 7 on the paper box 4 and seal it with tape, lay the bearing box 2 flat on the right support 103 on the right side of the supporting frame 1, and lay the pressing plate 3 flat on the plane of the left support 101 on the left side of the supporting frame 1. Do not punch holes in the pressing plate 3, which is the key to eliminating the instantaneous pressure difference on the board surface and preventing fracturing and distortion. Then remove the bolts and remove the cover plate 203 on the bearing body 201, and pull the paper box 4 together with the sealing bag 6 flatly onto the pressing plate 3 (the upper and lower pressing plates 3 are usually made of transparent acrylic plates with a thickness of 5-10mm, which works best. The specific thickness depends on the size of the paper box, and is based on the fact that it does not deform when the rubber band is tightened) and vacuum and seal it. Pulling flatly can prevent the paper box 4 from deforming, and the baffle 102 welded on the left side of the left support 201 can prevent the pressing plate 3 from slipping out of the supporting frame during the pulling process. 1. The height of the left support 101 plus the thickness of the pressing plate 3 is equal to the height of the right support 103 plus the thickness of the bottom of the bearing box 2, so that there is no step difference when the paper box 4 is pulled out, and then the same pressing plate 3 is covered on the other side of the paper box 4, and the upper and lower pressing plates 3 and the paper box 4 are tightly clamped with rubber bands 5 to fix the paper box 4 between the two pressing plates 3. The rubber bands 5 must be tightly wound to ensure that the two pressing plates 3 are tightly clamped on the paper box 4 during the entire pressing process without any gaps. This is to limit the free flow of powder in the paper box 4 and whether the pressed sheet blank is flat. A groove is left on the left support 101 on the left side of the support frame 1 to prevent some larger specifications from being deformed when the paper box 4 moves to the pressing plate 3 after vibration filling, and it is convenient to tighten the rubber bands 5 after the vacuum is evacuated and the pressing plate 3 is covered.

[0034] After fastening, stand the paper box 4 upright and use two identical slings to place them on the anti-slip step 8 on the side of the pressing plate 3 (the two slings will slide toward the middle at the stress-bearing point when lifting, causing the paper box 4 to tip over during lifting, and the anti-slip step 8 will prevent the slings from sliding toward the middle). Use a sling to put the fixed paper box 4 into the isostatic press for pressing, and a large-sized square ceramic plate blank can be obtained (the supporting frame 1 and slings can be omitted for smaller plates, and manual operation is sufficient).

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An isostatic pressing mold for large-sized ceramic plates, comprising a supporting frame (1), a bearing box (2), a pressing plate (3), a paper box (4), a rubber band (5), a sealing bag (6), and a feeding port (7), characterized in that: A carrying box (2) is placed on the right side of the supporting frame (1), there are two pressing plates (3) and they are respectively located on both sides of the paper box (4), the pressing plate (3) is placed on the left side of the supporting frame (1), there are a plurality of rubber bands (5) and the two pressing plates (3) and the paper box (4) are wrapped together, the inner side of the carrying box (2) is the same size as the paper box (4), the sealing bag (6) is the same size as the paper box (4) and is installed on the inner side of the paper box (4), a feeding port (7) is left on the paper box (4), and the direction of the feeding port (7) is the same as the direction of the opening of the carrying box (2).

2. The isostatic pressing mold for large-sized ceramic plates according to claim 1, characterized in that: The support frame (1) comprises a left support (101), a baffle (102), and a right support (103); the pressure plate (3) is placed on the left support (101), and the bearing box (2) is placed on the right support (103); the left side of the left support (101) is fixedly connected to the baffle (102), and the right side of the left support (101) is fixedly connected to the right support (103); the height of the left support (101) is higher than that of the right support (103); the height of the left support (101) plus the thickness of the pressure plate (3) is equal to the height of the right support (103) plus the thickness of the bottom surface of the bearing box (2).

3. The isostatic pressing mold for large-sized ceramic plates according to claim 1, characterized in that: The carrying box (2) comprises a carrying body (201), a connecting plate (202), a cover plate (203), and a connecting hole (204); the carrying body (201) is fixedly connected to two connecting plates (202); the cover plate (203) is fixedly connected to the other two connecting plates (202); the cross section of the cover plate (203) is consistent with the cross section of the carrying body (201); the connecting plate (202) is provided with a connecting hole (204); the connecting plate (202) on the carrying body (201) and the connecting plate (202) on the cover plate (203) are in corresponding positions, and the connecting holes (204) are in corresponding positions up and down.

4. The isostatic pressing mold for large-sized ceramic plates according to claim 1, characterized in that: The pressing plate (3) is provided with an anti-skid step (8), and the anti-skid step (8) is located on the right side of the pressing plate (3) and is fixedly connected to the pressing plate (3).

5. The isostatic pressing mold for large-sized ceramic plates according to claim 1, characterized in that: The sealed bag (6) in the paper box (4) has at least two layers.

6. A method for using an isostatic pressing mold for large-sized ceramic plates according to any one of claims 1 to 5, characterized in that: The method of use comprises the following steps: Step 1: according to the size of the green blank, a paper box (4) is made, a feeding port (7) is reserved and a sealing bag (6) is put into it, and then a carrying box (2) is made, the paper box (4) is put into the carrying box (2) and the cover is tightened, the material is added into the paper box (4) and vibrated on a vibration platform until it is dense, and the paper box (4) is sealed and sealed with tape; Step 2: Place the carrying box (2) on the supporting frame (1) and drag the paper box (4) onto a pressing plate (3), vacuum seal the sealing bag (6) layer by layer, then cover the other side of the paper box (4) with the same pressing plate (3), and finally tighten the paper box (4) between the two pressing plates (3) with a rubber band (5); Step 3: Use a sling to place the fixed paper box (4) into an isostatic press for pressing, thereby obtaining a large-sized square ceramic plate-shaped blank.

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