Sand casting mold capable of achieving uniform cooling

Abstract

The utility model relates to a sand casting mould with uniform cooling, which comprises a lower mould frame and an upper mould frame capable of being assembled above the lower mould frame in a matching way, an upper water cavity distributed in a surrounding way is arranged in the upper mould frame, one side of the upper mould frame is connected with a first water inlet pipe communicated with the upper water cavity, and the other side of the upper mould frame is connected with a first water outlet pipe communicated with the upper water cavity; a lower water cavity distributed in a surrounding mode is formed in the lower die frame, one side of the lower die frame is connected with a second water inlet pipe communicated with the lower water cavity, the other side of the lower die frame is connected with a second water outlet pipe communicated with the lower water cavity, and first fastening plates are fixed to the positions, close to the bottom end, of the two sides of the upper die frame respectively. Compared with a traditional bolt locking mode, the mode that the first fastening plate is pressed on the second fastening plate through the fastening mechanism to fasten the upper die frame and the lower die frame is adopted, special tools are not needed, manual operation is achieved, operation is easy and convenient, the operation speed is high, and rapid assembly and disassembly of the upper die frame and the lower die frame are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of sand casting moulds, in particular to a sand casting mould with uniform cooling. Background Art

[0002] A sand casting mold is a mold used for metal casting. Typically made of sand and a binder, it possesses excellent plasticity and high-temperature resistance. During the casting process, the sand mixture is pressed and shaped to form a two-part mold. Liquid metal is then poured into the mold, and after it cools and solidifies, the finished product is removed. Sand casting molds are suitable for mass production and offer advantages such as low cost and ease of fabrication.

[0003] Traditional sand casting mold cooling methods mostly use natural cooling, which results in slow cooling and low efficiency of the workpiece molding. The assembly between the traditional upper and lower parts of the mold is usually fastened with bolts, and tightening the bolts requires the use of special tools, which is time-consuming and labor-intensive, and cannot be quickly assembled and disassembled. Utility Model Content

[0004] The purpose of the utility model is to provide a sand casting mold with uniform cooling, which effectively solves the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0006] A sand casting mold with uniform cooling comprises a lower mold frame and an upper mold frame that can be matched and assembled above the lower mold frame, an upper water cavity distributed in a surrounding manner is provided in the upper mold frame, one side of the upper mold frame is connected to a first water inlet pipe communicating with the upper water cavity, and the other side is connected to a first water outlet pipe communicating with the upper water cavity, a lower water cavity distributed in a surrounding manner is provided in the lower mold frame, one side of the lower mold frame is connected to a second water inlet pipe communicating with the lower water cavity, and the other side is connected to a second water outlet pipe communicating with the lower water cavity, first fastening plates are respectively fixed on both sides of the upper mold frame near its bottom end, and second fastening plates are respectively fixed on both sides of the lower mold frame near its top end, and a fastening mechanism is provided on both second fastening plates, and the fastening mechanism is used to press the first fastening plate onto the second fastening plate to achieve the fastening of the upper mold frame and the lower mold frame.

[0007] Furthermore, the first water inlet pipe is arranged near the top of the upper mold frame, the first water outlet pipe is arranged near the bottom of the upper mold frame, the second water inlet pipe is arranged near the top of the lower mold frame, and the second water outlet pipe is arranged near the bottom of the lower mold frame.

[0008] Furthermore, the first water outlet pipe and the second water inlet pipe are arranged on the same side, and the first water inlet pipe and the second water outlet pipe are arranged on the same side.

[0009] Furthermore, the fastening mechanism includes a vertical frame, a suspension, an adjusting screw, a pressure plate and a handwheel. The side end of the second fastening plate is provided with two horizontally extending sliding holes, and sliding rods are slidably inserted in the two sliding holes. The sliding rods extend to the outer side of the second fastening plate. The vertical frame is fixed on the outer ends of the two sliding rods on the same side, and the suspension is fixed on the top side of the vertical frame. A vertical through-threaded hole is provided on the suspension, and the adjusting screw thread is matched and installed in the threaded hole. The pressure plate is rotatably installed at the bottom end of the adjusting screw, and the handwheel is installed at the top of the pressure plate.

[0010] Furthermore, a vertically penetrating guide hole is provided on the suspension, a guide rod is slidably inserted in the guide hole, and the bottom end of the guide rod is fixedly connected to the upper surface of the pressure plate.

[0011] Furthermore, positioning holes are provided on the two first fastening plates, and positioning pins that can be matched and inserted into the corresponding positioning holes are fixed on the two second fastening plates.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0013] 1. The utility model uses a fastening mechanism to press the first fastening plate onto the second fastening plate to fasten the upper mold frame and the lower mold frame. Compared with the traditional method of locking with bolts, the utility model does not require the use of special tools and can be operated manually. The operation is simple and convenient, the operation speed is fast, and it is conducive to the rapid assembly and disassembly of the upper mold frame and the lower mold frame.

[0014] 2. The utility model injects cooling water into the upper water cavity through the first water inlet pipe, and injects cooling water into the lower water cavity through the second water inlet pipe. The cooling water in the upper water cavity and the lower water cavity distributed in an embracing manner on the periphery can accelerate heat dissipation and improve the cooling and forming efficiency of the workpiece. In addition, the cooling water absorbs heat, and after absorbing heat, the cooling water can be discharged through the first water outlet pipe and the second water outlet pipe respectively, thereby carrying the heat out, and then continuing to inject cooling water through the first water inlet pipe and the second water inlet pipe, thereby achieving continuous water-cooled heat dissipation and improving the uniformity of heat dissipation and cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure at center A;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 4 It is a schematic cross-sectional view of a local structure in the present utility model.

[0019] In the figure: 1. Upper mold frame; 11. Upper water cavity; 12. First water inlet pipe; 13. First water outlet pipe; 14. First fastening plate; 141. Positioning hole; 2. Lower mold frame; 21. Lower water cavity; 22. Second water inlet pipe; 23. Second water outlet pipe; 24. Second fastening plate; 241. Positioning pin; 3. Fastening mechanism; 301. Sliding hole; 31. Sliding rod; 32. Stand; 33. Suspension; 331. Threaded hole; 332. Guide hole; 333. Guide rod; 34. Adjusting screw; 35. Pressing plate; 36. Handwheel. 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying 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 a limitation on the embodiments of the present invention.

[0022] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0023] See also Figures 1-4The utility model provides a sand casting mold with uniform cooling, comprising a lower mold frame 2 and an upper mold frame 1 that can be matched and assembled above the lower mold frame 2. The upper mold frame 1 is provided with an upper water cavity 11 distributed in a surrounding manner, one side of the upper mold frame 1 is connected to a first water inlet pipe 12 communicating with the upper water cavity 11, and the other side is connected to a first water outlet pipe 13 communicating with the upper water cavity 11; the lower mold frame 2 is provided with a lower water cavity 21 distributed in a surrounding manner, one side of the lower mold frame 2 is connected to a second water inlet pipe 22 communicating with the lower water cavity 21, and the other side is connected to a second water outlet pipe 23 communicating with the lower water cavity 21; first fastening plates 14 are fixed on both sides of the upper mold frame 1 near its bottom end, and second fastening plates 24 are fixed on both sides of the lower mold frame 2 near its top end, and fastening mechanisms 3 are provided on the two second fastening plates 24, which are used to press the first fastening plates 14 onto the second fastening plates 24 to achieve the fastening of the upper mold frame 1 and the lower mold frame 2.

[0024] When the present sand casting mold with uniform cooling is in use, the upper mold frame 1 is assembled on top of the lower mold frame 2, and then the fastening mechanisms 3 on both sides are operated to press the first fastening plate 14 onto the corresponding second fastening plate 24 to achieve the fastening of the upper mold frame 1 and the lower mold frame 2. When the molten metal is injected to be formed and cooled, cooling water is injected into the upper water cavity 11 through the first water inlet pipe 12, and cooling water is injected into the lower water cavity 21 through the second water inlet pipe 22. The cooling water in the upper water cavity 11 and the lower water cavity 21 distributed in an embracing manner can accelerate heat dissipation and improve the cooling and forming efficiency of the workpiece. In addition, the cooling water absorbs heat, and the cooling water can be discharged through the first water outlet pipe 13 and the second water outlet pipe 23 respectively after absorbing heat, and then the heat can be carried away and discharged, and then cooling water is continuously injected through the first water inlet pipe 12 and the second water inlet pipe 22, so as to achieve continuous water cooling and improve the uniformity of heat dissipation and cooling.

[0025] During demoulding at a later stage, it is only necessary to operate the fastening mechanism 3 again to cancel the pressing of the first fastening plate 14 , thereby canceling the fastening of the upper mold frame 1 and the lower mold frame 2 , thereby facilitating the separation of the upper mold frame 1 and the lower mold frame 2 .

[0026] The utility model utilizes the fastening mechanism 3 to press the first fastening plate 14 onto the second fastening plate 24 to fasten the upper mold frame 1 and the lower mold frame 2. Compared with the traditional method of locking with bolts, the utility model does not require the use of special tools and can be operated manually. The operation is simple and convenient, the operation speed is fast, and it is conducive to the rapid assembly and disassembly of the upper mold frame 1 and the lower mold frame 2.

[0027] Specifically, the first water inlet pipe 12 is arranged near the top of the upper mold frame 1, the first water outlet pipe 13 is arranged near the bottom of the upper mold frame 1, the second water inlet pipe 22 is arranged near the top of the lower mold frame 2, and the second water outlet pipe 23 is arranged near the bottom of the lower mold frame 2. The water inlet end is arranged at a high place and the water outlet end is arranged at a low place to adapt to the characteristics of water flowing from high to low, ensuring that the upper water cavity 11 and the lower water cavity 21 can be filled when water is inlet and can be drained when water is out, thereby improving the continuous heat dissipation effect.

[0028] Specifically, the first water outlet pipe 13 and the second water inlet pipe 22 are arranged on the same side, and the first water inlet pipe 12 and the second water outlet pipe 23 are arranged on the same side, so that water enters from both sides of the workpiece, ensuring that low-temperature water flows towards each other from both sides, further improving the uniformity of heat dissipation and cooling.

[0029] Specifically, the fastening mechanism 3 includes a stand 32, a hanger 33, an adjusting screw 34, a pressure plate 35 and a hand wheel 36. The side end of the second fastening plate 24 is provided with two horizontally extending sliding holes 301, and the two sliding holes 301 are slidably inserted with sliding rods 31. The sliding rods 31 extend to the outer side of the second fastening plate 24. The stand 32 is fixed to the outer ends of the two sliding rods 31 on the same side. The hanger 33 is fixed to the top side of the stand 32. The hanger 33 is provided with a vertically penetrating threaded hole 331, and the adjusting screw 34 is threadedly matched with the screw hole 331. Installed in the threaded hole 331, the pressure plate 35 is rotatably installed at the bottom end of the adjusting screw 34, and the handwheel 36 is installed at the top end of the pressure plate 35. When tightening the upper mold frame 1 and the lower mold frame 2, first push the stand 32 inward to move the pressure plate 35 above the first fastening plate 14, then hold the handwheel 36 and tighten the adjusting screw 34. The adjusting screw 34 drives the pressure plate 35 to move downward until the pressure plate 35 presses the first fastening plate 14 onto the second fastening plate 24, thereby achieving the fastening of the upper mold frame 1 and the lower mold frame 2.

[0030] By holding the hand wheel 36, the contact area with the hand is increased, which makes it easier to exert force to turn the adjusting screw 34, making the operation process easier and more labor-saving. When disassembling, the adjusting screw 34 is turned in the reverse direction to drive the pressure plate 35 to move upward.

[0031] In addition, by pulling the stand 32 outward, the suspension 33 and the pressure plate 35 are dislocated and separated from the first fastening plate 14, thereby avoiding obstruction and interference with the first fastening plate 14, thereby facilitating the removal of the upper mold frame 1 from the lower mold frame 2.

[0032] Specifically, a vertical guide hole 332 is provided on the suspension 33, and a guide rod 333 is slidably inserted in the guide hole 332. The bottom end of the guide rod 333 is fixedly connected to the upper surface of the pressure plate 35. The sliding cooperation between the guide rod 333 and the guide hole 332 provides a guiding and limiting effect on the pressure plate 35, thereby preventing the pressure plate 35 from rotating with the first fastening plate 14 when the adjusting screw 34 is screwed, thereby improving the stability during tightening.

[0033] Specifically, the two first fastening plates 14 are each provided with a positioning hole 141, and the two second fastening plates 24 are each fixed with a positioning pin 241 that can be matched and inserted into the corresponding positioning hole 141. When the mold is closed, the positioning pin 241 is aligned and inserted into the positioning hole 141, which can ensure that the upper mold frame 1 and the lower mold frame 2 are aligned and matched, thereby achieving a positioning and alignment effect. In addition, after the mold is closed, it can play a limiting role in the horizontal direction to prevent the upper mold frame 1 and the lower mold frame 2 from being misaligned and offset in the horizontal direction, thereby affecting the forming of the workpiece.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A sand casting mold with uniform cooling, comprising a lower mold frame (2) and an upper mold frame (1) capable of being matched and assembled above the lower mold frame (2), characterized in that: An upper water cavity (11) is provided in the upper mold frame (1) and is distributed in a surrounding manner. One side of the upper mold frame (1) is connected to a first water inlet pipe (12) in communication with the upper water cavity (11), and the other side is connected to a first water outlet pipe (13) in communication with the upper water cavity (11). A surrounding lower water cavity (21) is provided in the lower mold frame (2); one side of the lower mold frame (2) is connected to a second water inlet pipe (22) communicating with the lower water cavity (21); and the other side of the lower mold frame (2) is connected to a second water outlet pipe (23) communicating with the lower water cavity (21); First fastening plates (14) are fixed to both sides of the upper mold frame (1) near its bottom end, and second fastening plates (24) are fixed to both sides of the lower mold frame (2) near its top end. A fastening mechanism (3) is provided on each of the two second fastening plates (24), and the fastening mechanism (3) is used to press the first fastening plate (14) onto the second fastening plate (24) to achieve fastening of the upper mold frame (1) and the lower mold frame (2).

2. The sand casting mold with uniform cooling according to claim 1, characterized in that: The first water inlet pipe (12) is provided near the top end of the upper mold frame (1), and the first water outlet pipe (13) is provided near the bottom end of the upper mold frame (1); The second water inlet pipe (22) is provided near the top end of the lower mold frame (2), and the second water outlet pipe (23) is provided near the bottom end of the lower mold frame (2).

3. The sand casting mold with uniform cooling according to claim 1, characterized in that: The first water outlet pipe (13) and the second water inlet pipe (22) are arranged on the same side, and the first water inlet pipe (12) and the second water outlet pipe (23) are arranged on the same side.

4. The sand casting mold with uniform cooling according to claim 1, characterized in that: The fastening mechanism (3) includes a stand (32), a suspension (33), an adjusting screw (34), a pressing plate (35) and a hand wheel (36); The side end of the second fastening plate (24) is provided with two horizontally extending sliding holes (301), and a sliding rod (31) is slidably inserted into each of the two sliding holes (301). The sliding rods (31) extend to the outer side of the second fastening plate (24), and the stand (32) is fixed to the outer ends of the two sliding rods (31) on the same side; The suspension (33) is fixed to one side of the top of the stand (32), and a vertical threaded hole (331) is provided on the suspension (33). The adjusting screw (34) is threadedly mounted in the threaded hole (331). The pressure plate (35) is rotatably mounted on the bottom end of the adjusting screw (34), and the hand wheel (36) is mounted on the top end of the pressure plate (35).

5. The sand casting mold with uniform cooling according to claim 4, characterized in that: A vertically penetrating guide hole (332) is provided on the suspension (33), a guide rod (333) is slidably inserted into the guide hole (332), and the bottom end of the guide rod (333) is fixedly connected to the upper surface of the pressing plate (35).

6. The sand casting mold with uniform cooling according to claim 1, characterized in that: Both of the first fastening plates (14) are provided with positioning holes (141), and both of the second fastening plates (24) are fixed with positioning pins (241) that can be matched and inserted into the corresponding positioning holes (141).

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