Mold opening and closing pouring mold

Abstract

The mold opening and closing pouring mold comprises a first mold body and a second mold body connected with the first mold body in a buckled mode, the edge, facing the second mold body, of the first mold body is provided with a first abutting edge, and a first containing groove is defined by the first abutting edge; the edge of the second mold is provided with a second abutting edge facing the first mold, a second containing groove is defined by the second abutting edge, the first containing groove and the second containing groove are buckled to form a casting molding cavity, and the first abutting edge and the second abutting edge abut against each other to form a mold opening of the casting molding cavity. According to the sponge cushion, the buckling position of the first containing groove and the second containing groove, namely the mold opening, is moved to the side face of the sponge cushion, and hard edges are prevented from being formed on the top face or the bottom face of the cushion. And the wear of the leather and other fabrics is reduced, the demolding operation is simplified, and the realization of mechanical automatic demolding is facilitated, so that the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of casting moulds, in particular to an opening and closing mould casting mould. Background Art

[0002] In the existing sofa sponge cushion production process, mold opening and closing molding technology is widely used. This technology usually relies on a mold with two parts, the upper and lower parts, which form a closed space during the pressing process to heat and compress the sponge material to achieve the molding of the cushion. However, this traditional mold design has some inherent problems.

[0003] First, the mold opening, i.e., the mold mouth, is usually located on the top or bottom surface of the sponge pad. During the heating and pressing process, the gas in the sponge material needs to be discharged through the mold mouth to ensure that the cushion can be formed evenly and tightly. However, this design often leads to the formation of hard edges and waste near the mold mouth. These hard edges not only affect the aesthetics of the cushion, but more importantly, if they are not cleaned, they will cause wear and tear on the leather and other fabrics that wrap the sponge pad, reducing the durability of the product. In order to solve this problem, manual cutting is currently used to remove the hard edges. However, this method not only increases the complexity and cost of the production process, but also reduces production efficiency. In addition, since the accuracy and consistency of manual cutting are difficult to guarantee, it may have a negative impact on the overall quality of the cushion.

[0004] On the other hand, traditional mold design also has inconveniences in the demoulding process. Since the mold mouth is located on the top or bottom surface, the sponge pad needs to be compressed to remove it from the mold during demoulding. This operation is not only laborious, but also not conducive to the realization of mechanical automated demoulding. With the development of industrial automation technology, more and more companies are beginning to seek more efficient and automated production methods. Therefore, the shortcomings of traditional mold design in demoulding are becoming increasingly prominent. Summary of the invention

[0005] In order to overcome at least one of the defects of the prior art, the present invention provides an opening and closing mold casting mold, which can solve the problems of difficult demoulding and hard edge wear of leather and other fabrics.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] A casting mold with an opening and closing mold comprises a first mold and a second mold that is snap-fitted with the first mold, wherein the edge of the first mold is provided with a first abutting edge toward the second mold, and the first abutting edge encloses a first accommodating groove; the edge of the second mold is provided with a second abutting edge toward the first mold, and the second abutting edge encloses a second accommodating groove, the first accommodating groove and the second accommodating groove are snap-fitted to form a casting molding cavity, and the first abutting edge abuts against the second abutting edge to form a mold opening of the casting molding cavity.

[0008] By adopting the above scheme, firstly, by moving the fastening point of the first receiving groove and the second receiving groove, i.e., the mold opening, to the side of the sponge cushion, the formation of hard edges on the top or bottom surface of the cushion is avoided. In this way, even if the sponge material produces hard edges and waste during the heating and pressing process, they will be located on the side of the cushion, thereby greatly reducing the wear on fabrics such as leather. Secondly, since the mold opening is located on the side, when the first mold and the second mold are separated, a part of the sponge cushion will be exposed, so that the demoulding process can be completed without squeezing the sponge cushion. This design not only simplifies the demoulding operation, but also facilitates the realization of mechanical automatic demoulding, thereby improving production efficiency.

[0009] Furthermore, a first pressing edge is provided on the side of the first abutting edge facing the first accommodating groove, and a second pressing edge is provided on the side of the second abutting edge facing the second accommodating groove, and the first pressing edge abuts against the second pressing edge to form a pressing portion extending into the casting molding cavity.

[0010] By adopting the above solution, the pressing part can more effectively compress and fix the sponge material during the heating and pressing process, ensuring the molding quality and shape stability of the cushion. At the same time, the existence of the pressing part also helps to reduce the overflow and deformation of the sponge material near the mold mouth, further reducing the generation of hard edges and waste. Even if a hard edge is generated at the mold mouth, it will be concave into the sponge pad itself, and will not cause wear to fabrics such as leather, further improving the inconvenience caused by the hard edge.

[0011] Further, the first pressing edge includes a first surface abutting against the second pressing edge and a second surface facing away from the second pressing edge, and the angle between the first surface and the second surface is an acute angle; the second pressing edge includes a third surface abutting against the first pressing edge and a fourth surface facing away from the first pressing edge, and the angle between the third surface and the fourth surface is an acute angle.

[0012] By adopting the above scheme, the design of the acute angle enhances the compression effect of the edge press. During the mold fastening process, the acute angle parts of the first edge press and the second edge press can be more effectively embedded in the sponge material, thereby increasing the compression force and fixing force of the mold on the sponge material. This helps to ensure that the cushion can obtain uniform hardness and shape during the molding process, and improves the molding quality and stability of the cushion. Since the edge press is embedded in the sponge material at an acute angle, it can cut and tidy up the edge of the sponge material to a certain extent, reducing the overflow and deformation of the sponge material. This helps to reduce the generation of hard edges and waste materials, and improve the aesthetics and durability of the cushion. In addition, the design of the acute angle angle also helps to improve the sealing performance of the mold. During the heating and pressing process, a certain temperature and pressure need to be maintained inside the mold. The edge press design with an acute angle angle can more effectively prevent heat and gas leakage inside the mold, thereby improving the molding efficiency and quality of the cushion.

[0013] Furthermore, the cross section of the pressing portion is a triangular structure protruding into the casting molding cavity.

[0014] By adopting the above solution, the sharp corner of the triangle has a higher pressure concentration effect, so it can exert greater pressure on a smaller contact area, thereby enhancing the compression effect of the mold on the sponge material and helping to reduce the hard edges and waste generation near the mold mouth.

[0015] Furthermore, the included angle of the cross section of the pressing portion toward the casting molding cavity is 90°.

[0016] By adopting the above solution, the right-angled triangle structure of the pressing part can also play an important role in demoulding. Due to the shape characteristics of the right-angle part, the mold can be more easily separated from the sponge material during demoulding, reducing the pulling and damage of the mold to the sponge material. At the same time, this design also helps to reduce the difficulty and cost of demoulding and improve production efficiency.

[0017] Further, the cross section of the pressing portion is an arc-shaped structure protruding into the casting molding cavity, or the cross section of the pressing portion is a trapezoidal structure protruding into the casting molding cavity.

[0018] By adopting the above solution, the compression effect of the sponge material can also be achieved, reducing the hard edges and waste materials near the mold opening.

[0019] Furthermore, the distance that the pressing portion protrudes into the casting molding cavity is no more than 1 cm.

[0020] By adopting the above solution, it is also helpful to reduce the difficulty of demoulding and ensure that the pressure applied by the mold to the sponge material during the pressing process is moderate, so as to obtain the ideal molding effect without significantly affecting the appearance.

[0021] Furthermore, the distance between the pressing portion and the bottom of the first accommodating groove is not less than 3 cm, or the distance between the pressing portion and the bottom of the second accommodating groove is not less than 3 cm.

[0022] By adopting the above solution, it can be ensured that during the heating and pressing process, the sponge material can be fully melted and fill the entire receiving groove, so that the sponge material can protrude from the receiving groove during the demoulding process, which is convenient for a robot or manual demoulding.

[0023] Further, the first mold is provided with an exhaust hole connected to the first containing groove, and / or the second mold is provided with an exhaust hole connected to the second containing groove, and each exhaust hole is provided with an exhaust valve.

[0024] By adopting the above scheme, exhaust holes are set to ensure that the gas generated during the heating and melting process of filling materials such as sponges can be discharged in time, thereby reducing the probability of exhausting from the mold mouth to produce hard-edged waste; the exhaust valve is an important component connecting the exhaust hole with the outside world. It can prevent external air from entering the mold when the mold is closed, and allow the gas to be discharged smoothly when it is generated inside the mold.

[0025] Furthermore, a heating device is provided in the first mold and the second mold for heating the first containing tank and the second containing tank.

[0026] By adopting the above solution, sufficient heat is provided to the filling material inside the mold to make it melt or soften, so that it can be formed into the desired shape under the closing pressure of the mold. For sponge cushions, the heating equipment can ensure that the sponge material is heated evenly to avoid local overheating or non-melting, thereby improving the molding quality and consistency of the cushion.

[0027] In summary, the opening and closing mold casting mold provided by the present invention has the following technical effects:

[0028] 1. By designing the mold's buckle joint on the side of the sponge cushion instead of the top or bottom surface, the formation of hard edges on the key contact surface of the cushion is effectively avoided. This not only improves the aesthetics of the cushion, but also significantly reduces the wear and tear on leather and other fabrics caused by the existence of hard edges, thereby extending the service life of the product;

[0029] 2. The design of the side mold opening makes the demoulding process more convenient. When the first mold and the second mold are separated, part of the sponge cushion will be exposed naturally, and there is no need to forcibly remove it by squeezing or other means. This not only simplifies the operation process and reduces labor intensity, but also facilitates the introduction of mechanical automatic demoulding technology, thereby greatly improving production efficiency;

[0030] 3. The design of the side mold opening also helps to reduce waste caused by hard edge cutting and improves the utilization rate of sponge materials. This not only helps to reduce production costs, but also conforms to the production concept of environmental protection and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0032] Figure 2 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0033] Figure 3 for Figure 2 Enlarged view of area A in the middle;

[0034] Figure 4 It is a schematic diagram of the structure in which the first pressing edge and the second pressing edge are separated according to an embodiment of the present invention;

[0035] Figure 5 A schematic diagram of a partial explosion structure of an embodiment of the present invention;

[0036] Figure 6 A schematic diagram of a partial explosion structure of an embodiment of the present invention;

[0037] Figure 7 It is a schematic diagram of a partial explosion structure of an embodiment of the present invention.

[0038] Among them, the meanings of the figure numbers are as follows: 1. first mold; 11. first abutting edge; 12. first accommodating groove; 13. first pressing edge; 131. first surface; 132. second surface; 14. boss; 2. second mold; 21. second abutting edge; 22. second accommodating groove; 23. second pressing edge; 231. third surface; 232. fourth surface; 24. groove; 3. casting molding cavity; 4. pressing part; 41. oiling part; 411. limiting structure; 42. clamping part; 5. exhaust hole; 6. exhaust valve; 7. heating equipment; 8. pull ring; 9. sponge pad. DETAILED DESCRIPTION

[0039] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained by taking specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Embodiment 1 of the present invention refers to Figure 1-Figure 7 As shown, an open-and-close mold casting mold is disclosed, comprising a first mold 1 and a second mold 2 that is buckled and connected to the first mold 1, the edge of the first mold 1 is provided with a first abutting edge 11 facing the second mold 2, and the first abutting edge 11 encloses a first receiving groove 12; the edge of the second mold 2 is provided with a second abutting edge 21 facing the first mold 1, and the second abutting edge 21 encloses a second receiving groove 22, the first receiving groove 12 and the second receiving groove 22 are buckled to form a casting molding cavity 3, the first abutting edge 11 and the second abutting edge 21 abut to form a mold opening of the casting molding cavity 3, and by moving the buckling part of the first receiving groove 12 and the second receiving groove 22, that is, the mold opening, to the side of the sponge cushion, the formation of hard edges on the top or bottom surface of the cushion is avoided. Even if the sponge material produces hard edges and waste during the heating and pressing process, they will be located on the side of the cushion, thereby greatly reducing the wear on fabrics such as leather. Since the mold opening is located on the side, when the first mold 1 and the second mold 2 are separated, a part of the sponge cushion will be exposed, so that the demoulding process can be completed without squeezing the sponge cushion. This design not only simplifies the demoulding operation, but also facilitates the realization of mechanical automated demoulding, thereby improving production efficiency.

[0044] It should be noted that the present invention is not only applicable to the opening and closing molding of sponge pads, but can also be adapted to other materials for casting and opening and closing molding.

[0045] In a specific embodiment, the first mold 1 and the second mold 2 are both hollow shells, the first receiving groove 12 and the second receiving groove 22 are both located on the opposite surfaces of the first mold 1 and the second mold 2, and the first mold 1 and the second mold 2 are provided with a heating device 7 in their shells for heating the first receiving groove 12 and the second receiving groove 22. The hotter device includes but is not limited to a heating tube or a heating plate arranged against the groove wall of the first receiving groove 12 and the second receiving groove 22, which can provide sufficient heat for the filling material inside the mold to make it reach a melted or softened state, so that it can form a desired shape under the closing pressure of the mold. For a sponge cushion, the heating device 7 can ensure that the sponge material is heated evenly, avoiding local overheating or non-melting, thereby improving the molding quality and consistency of the cushion.

[0046] In some embodiments, in order to better align the first mold 1 and the second mold 2, a boss 14 is provided on the edge of the first mold 1, and a groove 24 corresponding to the boss 14 is provided on the second mold 2, so that the first mold 1 and the second mold 2 can maintain relative stability after being buckled, and no displacement occurs. In order to further improve the alignment success rate of the first mold 1 and the second mold 2, the boss 14 is designed to have a smaller cross-sectional area as it approaches the end. Similarly, the shape of the groove 24 corresponds to the shape of the boss 14, so that the effect of inserting the groove 24 can be achieved without precise alignment, and it can be automatically plugged into place under the action of gravity. It should be noted that the shape of the boss 14 includes but is not limited to a frustum or a prism, and the positions of the boss 14 and the groove 24 can be interchangeable, and the effect of locking can be achieved. The number of the boss 14 and the groove 24 is more than two. When two are provided, they are arranged in alignment. When multiple are provided, they can be arranged along the circumferential outer side of the first abutting edge 11 and the second abutting edge 21. The boss 14 may also be a bolt, which is movably connected to the first mold 1 or the second mold 2, and the end of the bolt is provided with a chamfer to facilitate insertion into the groove 24. In this embodiment 1, the boss 14 and the groove 24 are provided with four, wherein the boss 14 is two prisms and two bolts, the bolts and prisms are arranged alternately, and the groove 24 is a groove structure corresponding to the corresponding boss 14 structure. After buckling, the molds are relatively stable, the displacement phenomenon is reduced, and the reliability and durability of the mold are improved.

[0047] In some embodiments, in order to facilitate the intelligent control of opening and closing of the first mold 1 and the second mold 2, the side walls of the first mold 1 and the second mold 2 are also provided with pull rings 8, which are conducive to grasping and clamping by a robot or other intelligent equipment.

[0048] In order to make the gas in the casting molding cavity 3 be discharged more advantageously during the sponge material molding process, the first mold 1 is provided with a vent 5 connected to the first receiving groove 12, and / or the second mold 2 is provided with a vent 5 connected to the second receiving groove 22, and each of the vents 5 is provided with an exhaust valve 6. By providing the vent 5, it is ensured that the gas generated during the heating and melting of the filling material such as the sponge can be discharged in time, and the probability of exhausting from the mold mouth to produce hard edge waste is reduced; the exhaust valve 6 is an important component connecting the vent 5 with the outside world, which can prevent external air from entering the mold when the mold is closed, and allow the gas to be discharged smoothly when it is generated inside the mold. In this embodiment 1, the vent 5 is provided on the second mold 2, specifically, the vent is provided on the bottom surface of the second receiving groove 22, and the second mold 2 itself The housing is provided with an exhaust valve 6 corresponding to each vent 5. It can exhaust gas during the sponge molding process without exhausting gas from the mold mouth, thereby reducing the probability of hard edges.

[0049] When in use, prepare the first mold 1 and the second mold 2 to ensure that they are in a snap-fit ​​state, check whether the boss 14 and the groove 24 correspond to each other, and whether the exhaust hole 5 and the exhaust valve 6 are working properly, start the heating device 7 inside the first mold 1 and the second mold 2, heat the first receiving groove 12 and the second receiving groove 22, and ensure that the sponge material can reach a melted or softened state inside the mold. While heating, put an appropriate amount of sponge material into the first receiving groove 12 or the second receiving groove 22 to ensure that the sponge material is evenly distributed to avoid local overheating or unmelted conditions, snap the first mold 1 and the second mold 2 together to make the first abutting edge 11 and the second abutting edge 21 tightly abut, the boss 14 should be correctly inserted into the groove 24 to ensure relative stability between the molds, during the heating and melting process of the sponge material, the generated gas will be discharged through the exhaust hole 5, the exhaust valve 6 will allow the gas to be discharged smoothly when it is generated inside the mold, and prevent external air from entering the mold, under the closing pressure of the mold, the sponge material will be formed according to the shape of the mold, wait for the sponge material to cool and solidify, and form the desired cushion shape. When the sponge cushion is cooled and solidified, the first mold 1 and the second mold 2 are separated. Since the mold opening is located on the side, the demolding process can be completed without squeezing the sponge cushion. A robot or other intelligent equipment can be used to grab and clamp the mold through the pull ring 8 to simplify the demolding operation.

[0050] During the above operation, since there is still a gap at the mold mouth, a small amount of gas will be discharged from there, so there is a chance that a hard edge will be formed on the side of the sponge pad 9. In order to solve the above problem, in some embodiments, a first pressing edge 13 is provided on the side of the first abutting edge 11 facing the first receiving groove 12, and a second pressing edge 23 is provided on the side of the second abutting edge 21 facing the second receiving groove 22. The first pressing edge 13 and the second pressing edge 23 are abutted to form a pressing portion 4 extending into the casting molding cavity 3. The pressing portion 4 can make the hard edge formed on the side of the sponge pad 9 concave inward, so that it will not be easily touched. Specifically, the pressing portion 4 can more effectively compress and fix the sponge material during the heating and pressing process, ensuring the molding quality and shape stability of the cushion. At the same time, the presence of the pressing portion 4 also helps to reduce the overflow and deformation of the sponge material near the mold mouth, further reducing the generation of hard edges and waste. Even if a hard edge is generated at the mold mouth, it will be concave into the sponge pad 9 itself, and will not cause wear to fabrics such as leather, further improving the inconvenience caused by the hard edge.

[0051] The first pressing edge 13 includes a first surface 131 that abuts against the second pressing edge 23 and a second surface 132 that faces away from the second pressing edge 23, and the angle between the first surface 131 and the second surface 132 is an acute angle; the second pressing edge 23 includes a third surface 231 that abuts against the first pressing edge 13 and a fourth surface 232 that faces away from the first pressing edge 13, and the angle between the third surface 231 and the fourth surface 232 is an acute angle. The design of the acute angle enhances the compression effect of the pressing edge. During the mold fastening process, the acute angle portions of the first pressing edge 13 and the second pressing edge 23 can be more effectively embedded in the sponge material, thereby increasing the compression force and fixing force of the mold on the sponge material. This helps to ensure that the seat cushion can obtain uniform hardness and shape during the molding process, and improves the molding quality and stability of the seat cushion. Since the pressing edge is embedded in the sponge material in the form of an acute angle, it can cut and tidy up the edge of the sponge material to a certain extent, reducing the overflow and deformation of the sponge material. This helps to reduce the generation of hard edges and waste materials, and improve the aesthetics and durability of the seat cushion. In addition, the design of the acute angle also helps to improve the sealing performance of the mold. During the heating and pressing process, the inside of the mold needs to maintain a certain temperature and pressure. The pressing edge design of the acute angle can more effectively prevent the heat and gas leakage inside the mold, thereby improving the molding efficiency and quality of the cushion.

[0052] It should be noted that the first surface 131 and the third surface 231 abut against each other to form an abutting surface, which can be parallel to the horizontal plane or inclined to the horizontal plane, and can be adaptively adjusted according to the sponge pad 9 of different shapes, and this embodiment does not make specific limitations.

[0053] Optionally, the cross section of the pressing part 4 is a triangular structure protruding into the casting molding cavity 3, and the sharp corner of the triangle has a higher pressure concentration effect, so it can apply greater pressure on a smaller contact area, thereby enhancing the compression effect of the mold on the sponge material, which helps to reduce the hard edges and waste generation near the mold mouth. Preferably, the angle of the cross section of the pressing part 4 toward the casting molding cavity 3 is 90°, and the pressing part 4 with a right-angled triangle structure can also play an important role during demolding. Due to the shape characteristics of the right-angled part, the mold can be more easily separated from the sponge material during demolding, reducing the pulling and damage of the mold to the sponge material. At the same time, this design also helps to reduce the difficulty and cost of demolding and improve production efficiency.

[0054] Optionally, the cross section of the pressing part 4 is an arc-shaped structure protruding into the casting and molding cavity 3, or the cross section of the pressing part 4 is a trapezoidal structure protruding into the casting and molding cavity 3. This arrangement can also achieve the compression effect on the sponge material and reduce the hard edges and waste near the mold opening. In other embodiments, the specific structure of the pressing part 4 is not specifically limited, and it is sufficient to achieve the same effect.

[0055] In some embodiments, the distance that the pressing portion 4 protrudes into the casting molding cavity 3 is no more than 1 cm, which helps to reduce the difficulty of demolding and ensures that the pressure applied by the mold to the sponge material during the pressing process is moderate, thereby obtaining an ideal molding effect without significantly affecting the appearance.

[0056] In order to facilitate the removal of the sponge pad 9 from the first receiving groove 12 and the second receiving groove 22, the distance between the pressing part 4 and the bottom of the first receiving groove 12 is not less than 3 cm, or the distance between the pressing part 4 and the bottom of the second receiving groove 22 is not less than 3 cm. In this way, it can be ensured that during the heating and pressing process, the sponge material can be fully melted and fill the entire receiving groove, so that the sponge material can protrude from the receiving groove during the demoulding process, which is conducive to the robot or manual demoulding. In other words, the depth of the first receiving groove 12 and the second receiving groove 22 is at least 3 cm, which is helpful for demoulding. During demoulding, the first mold 1 and the second mold 2 are separated. Since the mold opening is located on the side, and the design of the pressing part 4 helps to reduce the difficulty of demoulding, the demoulding process can be completed by slightly squeezing the sponge cushion. And due to the existence of the pressing part 4, the hard edge generated by the mold opening will be concave inside the sponge pad 9 itself, without trimming, and the existence of the hard edge after covering the fabric will not cause wear of the fabric, greatly improving the production efficiency of the sponge pad 9.

[0057] In summary, the opening and closing mold casting mold provided by the present invention has the following technical effects:

[0058] 1. By designing the mold's buckle joint on the side of the sponge cushion instead of the top or bottom surface, the formation of hard edges on the key contact surface of the cushion is effectively avoided. This not only improves the aesthetics of the cushion, but also significantly reduces the wear and tear on leather and other fabrics caused by the existence of hard edges, thereby extending the service life of the product;

[0059] 2. The design of the side mold opening makes the demoulding process more convenient. When the first mold 1 and the second mold 2 are separated, part of the sponge cushion will be exposed naturally, and there is no need to forcibly remove it by squeezing or other means. This not only simplifies the operation process and reduces labor intensity, but also facilitates the introduction of mechanical automatic demoulding technology, thereby greatly improving production efficiency;

[0060] 3. The design of the side mold opening also helps to reduce waste caused by hard edge cutting and improves the utilization rate of sponge materials. This not only helps to reduce production costs, but also conforms to the production concept of environmental protection and energy saving.

[0061] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. An opening and closing mold casting mold, characterized in that: It comprises a first mold (1) and a second mold (2) snap-fitted with the first mold (1), the edge of the first mold (1) is provided with a first abutting edge (11) facing the second mold (2), and the first abutting edge (11) encloses a first receiving groove (12); The edge of the second mold (2) is provided with a second abutting edge (21) facing the first mold (1); the second abutting edge (21) encloses a second accommodating groove (22); the first accommodating groove (12) and the second accommodating groove (22) are buckled to form a casting molding cavity (3); the first abutting edge (11) and the second abutting edge (21) abut to form a mold opening of the casting molding cavity (3).

2. The opening and closing mold casting mold according to claim 1, characterized in that: A first pressing edge (13) is provided on the side of the first abutting edge (11) facing the first receiving groove (12), and a second pressing edge (23) is provided on the side of the second abutting edge (21) facing the second receiving groove (22), and the first pressing edge (13) and the second pressing edge (23) abut against each other to form a pressing portion (4) extending into the casting molding cavity (3).

3. The opening and closing mold casting mold according to claim 2, characterized in that: The first pressing edge (13) comprises a first surface (131) abutting against the second pressing edge (23) and a second surface (132) facing away from the second pressing edge (23), and the angle between the first surface (131) and the second surface (132) is an acute angle; The second pressing edge (23) comprises a third surface (231) abutting against the first pressing edge (13) and a fourth surface (232) facing away from the first pressing edge (13), and the angle between the third surface (231) and the fourth surface (232) is an acute angle.

4. The opening and closing mold casting mold according to claim 2, characterized in that: The cross section of the pressing portion (4) is a triangular structure protruding into the casting molding cavity (3).

5. The opening and closing mold casting mold according to claim 4, characterized in that: The angle of the cross section of the pressing portion (4) toward the casting molding cavity (3) is 90°.

6. The opening and closing mold casting mold according to claim 2, characterized in that: The cross section of the pressing portion (4) is an arc-shaped structure protruding into the casting molding cavity (3), or the cross section of the pressing portion (4) is a trapezoidal structure protruding into the casting molding cavity (3).

7. The opening and closing mold casting mold according to claim 2, characterized in that: The distance that the pressing portion (4) protrudes into the casting molding cavity (3) is no more than 1 cm.

8. The opening and closing mold casting mold according to claim 5, characterized in that: The distance between the pressing portion (4) and the bottom of the first receiving groove (12) is not less than 3 cm, or the distance between the pressing portion (4) and the bottom of the second receiving groove (22) is not less than 3 cm.

9. An opening and closing mold casting mold according to any one of claims 1 to 8, characterized in that: The first mold (1) is provided with an exhaust hole (5) connected to the first receiving groove (12), and / or the second mold (2) is provided with an exhaust hole (5) connected to the second receiving groove (22), and each exhaust hole (5) is provided with an exhaust valve (6).

10. An opening and closing mold casting mold according to any one of claims 1 to 8, characterized in that: The first mold (1) and the second mold (2) are provided with heating equipment (7) for heating the first containing groove (12) and the second containing groove (22).

Images