Multi-variety interchangeable mold

Abstract

The utility model provides a multi-variety interchangeable mould which comprises two bases arranged in parallel and a plurality of groups of moulds of different varieties, the external structures of the moulds of each group are the same, forming cavities of different varieties are arranged in the moulds of each group, each mould of each group comprises a first half mould and a second half mould, the first half mold and the second half mold are detachably connected with the corresponding bases respectively, a movable hole is formed in the bottom in a forming cavity of the first half mold, a movable rod is arranged in the movable hole, a guide hole is formed in the top of the first half mold, a guide rod is arranged in the guide hole, a transmission mechanism is arranged in the first half mold, and the second half mold is arranged in the transmission mechanism. And the guide rod drives the movable rod to enter or leave the forming cavity through the transmission mechanism. According to the utility model, the labor cost can be effectively reduced, and different types of molds can be conveniently and quickly replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of sand molds, and particularly to a multi-variety interchangeable mold. Background Art

[0002] The most commonly used foundry sand for making sand molds is siliceous sand. In order to make the sand molds and cores have a certain strength and prevent them from being deformed or damaged during transportation, mold assembly and pouring of liquid metal, a sand binder is generally added during casting to bond the loose sand particles together to form a sand core.

[0003] The installation and connection structure of the existing sand mold is complicated, which makes the mold replacement work cumbersome. In the process of pouring molten metal, the sand core is wrapped by the molten metal and is in a high temperature state, which makes the resin used as a binder in the sand core decompose quickly, thereby generating a large amount of gas. In order to facilitate the exhaust of gas, exhaust holes are generally drilled at appropriate positions of the sand core by hand using an electric drill after core making, which has low production efficiency and high labor costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-variety interchangeable mold with the functions of forming exhaust holes and rapid installation and disassembly.

[0005] According to an embodiment of the utility model, a multi-variety interchangeable mold comprises two parallelly arranged bases and multiple groups of molds of different varieties, each group of the molds having the same external structure, each group of the molds having molding chambers of different varieties arranged therein, each group of the molds comprising a first half mold and a second half mold, the first half mold and the second half mold being detachably connected to the corresponding bases respectively, a movable hole being arranged at the bottom of the molding chamber of the first half mold, a movable rod being arranged in the movable hole, a guide hole being arranged at the top of the first half mold, a guide rod being arranged in the guide hole, a transmission mechanism being arranged in the first half mold, and the guide rod driving the movable rod to enter or leave the molding chamber through the transmission mechanism.

[0006] Preferably, a plurality of guide posts are provided on the base, a second guide groove matched with the guide posts is provided on the side of the mold, and a positioning assembly is also provided on the top of the guide post.

[0007] Further preferably, the side of the mold is provided with a positioning groove located above the second guide groove, and the positioning assembly includes a positioning block rotatably connected to the top of the guide column, and a telescopic part fixed on the base, the telescopic rod of the telescopic part is rotatably connected to a transmission rod, and the transmission rod is also rotatably connected to the positioning block.

[0008] Further preferably, a first guide groove is provided on the top of the guide column on the side close to the mold, the first guide groove has a first contact surface that abuts against the side wall of the second guide groove and a first guide surface inclined outward, and the positioning block is arranged on the side of the first guide groove away from the mold.

[0009] Further preferably, a connecting plate is fixedly provided on the guide column and is located on the side of the first guide groove away from the mold, and the connecting plate has a second guide surface extending along the surface of the first guide surface on the side facing the mold, and the positioning block is rotatably connected to the connecting plate.

[0010] Further preferably, the positioning block has a second contact surface on the side facing the guide column, and the positioning block has a third guide surface on the side facing the mold, and when the second contact surface contacts the guide column, the third guide surface and the second guide surface are located in the same plane.

[0011] Further preferably, the transmission mechanism includes a first piston chamber arranged at one end of the movable hole away from the molding chamber and connected thereto, a first piston block arranged in the first piston chamber and connected to the movable rod, a second piston chamber arranged at the bottom of the guide hole and connected thereto, and a second piston block arranged in the second piston chamber and connected to the guide rod, and the first piston chamber is connected to the second piston chamber.

[0012] Still further preferably, at least two guide rods are provided and are evenly distributed along the circumference of the mold, and the bottom of the guide rod is connected to the bottom of the guide hole through an elastic member.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] A movable rod is arranged inside the mold, which moves with the closing and opening of the mold, so that an exhaust hole of the sand mold can be formed during the sand mold forming process. The installation and connection method between the mold and the base is simple. The guide column cooperates with the second guide groove to facilitate the installation of the mold. The telescopic part and the positioning block can cooperate with the positioning groove to ensure the stability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a multi-variety interchangeable mold structure.

[0016] Figure 2 The utility model is a schematic diagram of the structure of a multi-variety interchangeable mold transmission mechanism.

[0017] Figure 3 The utility model is a schematic diagram of the matching structure of the guide column and the positioning block in a multi-variety interchangeable mold.

[0018] In the above drawings: 1. base; 110. guide column; 111. first guide groove; 112. first contact surface; 113. first guide surface; 114. connecting plate; 115. second guide surface; 120. positioning assembly; 121. positioning block; 122. telescopic member; 123. transmission rod; 124. second contact surface; 125. third guide surface; 2. mold; 201. first half mold; 202. second half mold; 203. movable rod; 204. guide hole; 205. guide rod; 206. movable hole; 207. second guide groove; 208. positioning groove; 209. elastic member; 210. transmission mechanism; 211. first piston chamber; 212. first piston block; 213. second piston chamber; 214. second piston block. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1 , Figure 2 As shown, a multi-variety interchangeable mold comprises two parallel bases 1 and a plurality of groups of molds 2 of different varieties, wherein the external structure of each group of the molds 2 is the same, and a molding chamber of different varieties is arranged inside each group of the molds 2, and each group of the molds 2 comprises a first half mold 201 and a second half mold 202, wherein the first half mold 201 and the second half mold 202 are detachably connected to the corresponding base 1, respectively, and a movable hole 206 is arranged at the bottom of the molding chamber of the first half mold 201, and a movable rod 203 is arranged in the movable hole 206, and a guide hole 204 is arranged at the top of the first half mold 201, and a guide rod 205 is arranged in the guide hole 204, and a transmission mechanism 210 is arranged in the first half mold 201, and the guide rod 205 drives the movable rod 203 to enter or leave the molding chamber through the transmission mechanism 210;

[0021] During the mold closing process, the second half mold 202 drives the guide rod 205 to move, and the guide rod 205 drives the movable rod 203 into the molding chamber through the transmission mechanism 210. After the sand shooting is completed and the sand core is formed, an exhaust hole will be formed on the sand core, reducing the process of manually processing the exhaust hole;

[0022] Specifically, the base 1 is provided with a plurality of guide posts 110. In the present embodiment, two guide posts 110 are provided and are respectively located on both sides of the mold 2. A second guide groove 207 is provided on the side of the mold 2 for matching with the guide post 110. The second guide groove 207 and the guide post 110 are matched with each other with a clearance of zero. A positioning assembly 120 is also provided on the top of the guide post 110.

[0023] The guide column 110 cooperates with the second guide groove 207 to facilitate the installation of the mold 2. Then, the positioning assembly 120 applies a force to the mold 2 toward the base 1, and the mold 2 is in a force-balanced state and is stable.

[0024] Specifically, the side of the mold 2 is provided with a positioning groove 208 located above the second guide groove 207, and the positioning assembly 120 includes a positioning block 121 rotatably connected to the top of the guide column 110, and a telescopic member 122 fixed on the base 1, and the telescopic rod of the telescopic member 122 is rotatably connected to a transmission rod 123, and the transmission rod 123 is also rotatably connected to the positioning block 121;

[0025] In this embodiment, the telescopic member 122 is a telescopic cylinder, and the telescopic member 122 drives the positioning block 121 to rotate through the transmission rod 123, so that the positioning block 121 conflicts with the positioning groove 208, thereby improving the stability of the mold 2;

[0026] In order to facilitate the mold 2 to move between the two guide posts 110, in a further embodiment, as Figure 3 As shown, a first guide groove 111 is provided on a side of the top of the guide column 110 close to the mold 2, the first guide groove 111 has a first contact surface 112 that abuts against the side wall of the second guide groove 207, and a first guide surface 113 inclined outward, and the positioning block 121 is provided on a side of the first guide groove 111 away from the mold 2;

[0027] A connecting plate 114 is fixedly disposed on the guide column 110 and is located on a side of the first guide groove 111 away from the mold 2. The connecting plate 114 has a second guiding surface 115 extending along the surface of the first guiding surface 113 on a side facing the mold 2. The positioning block 121 is rotatably connected to the connecting plate 114.

[0028] The positioning block 121 has a second contact surface 124 on the side facing the guide column 110, and has a third guide surface 125 on the side facing the mold 2. When the second contact surface 124 contacts the guide column 110, the third guide surface 125 and the second guide surface 115 are located in the same plane.

[0029] In the initial state, the mold 2 is in an open state, the second contact surface 124 of the positioning block 121 contacts the top surface of the guide column 110, and the first guide surface 113, the second guide surface 115, and the third guide surface 125 are in the same inclined plane. When the mold 2 is installed, even if the mold 2 deviates to one side, the mold 2 can slide along the first guide surface 113, the second guide surface 115, and the third guide surface 125 to between the two guide columns 110, so that the guide column 110 and the second guide groove 207 are accurately matched;

[0030] Specifically, the transmission mechanism 210 includes a first piston chamber 211 disposed at one end of the movable hole 206 away from the molding chamber and connected thereto, a first piston block 212 disposed in the first piston chamber 211 and connected to the movable rod 203, a second piston chamber 213 disposed at the bottom of the guide hole 204 and connected thereto, and a second piston block 214 disposed in the second piston chamber 213 and connected to the guide rod 205, wherein the first piston chamber 211 is connected to the second piston chamber 213;

[0031] When the guide rod 205 enters the guide hole 204, the air pressure drives the movable rod 203 to move so that one end of the movable rod leaves the movable hole 206 and enters the molding chamber;

[0032] In order to facilitate the resetting of the guide rod 205 and the movable rod 203, in a further embodiment, at least two guide rods 205 are provided and are evenly distributed along the circumference of the mold 2, and the bottom of the guide rod 205 is connected to the bottom of the guide hole 204 through an elastic member 209. In this embodiment, the elastic member 209 is a rigid spring;

[0033] After the mold 2 is opened and the formed sand core is disassembled, the guide rod 205 is reset under the elastic force of the elastic member 209 and drives the movable rod 203 to reset.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-variety interchangeable mold, characterized in that: The invention comprises two parallel bases (1) and a plurality of groups of different types of moulds (2), wherein the external structure of each group of the moulds (2) is the same, and each group of the moulds (2) is provided with a different type of forming chamber inside, and each group of the moulds (2) comprises a first half mould (201) and a second half mould (202), wherein the first half mould (201) and the second half mould (202) are respectively detachably connected to the corresponding base (1), a movable hole (206) is provided at the bottom of the forming chamber of the first half mould (201), and a movable rod (203) is provided in the movable hole (206), a guide hole (204) is provided at the top of the first half mould (201), and a guide rod (205) is provided in the guide hole (204), and a transmission mechanism (210) is provided in the first half mould (201), and the guide rod (205) drives the movable rod (203) to enter or leave the forming chamber through the transmission mechanism (210).

2. The multi-variety interchangeable mold according to claim 1, characterized in that: The base (1) is provided with a plurality of guide columns (110), the side of the mold (2) is provided with a second guide groove (207) matched with the guide columns (110), and the top of the guide columns (110) is also provided with a positioning assembly (120).

3. The multi-variety interchangeable mold according to claim 2, characterized in that: The side of the mold (2) is provided with a positioning groove (208) located above the second guide groove (207); the positioning assembly (120) comprises a positioning block (121) rotatably connected to the top of the guide column (110), and a telescopic member (122) fixed on the base (1); the telescopic rod of the telescopic member (122) is rotatably connected to a transmission rod (123), and the transmission rod (123) is also rotatably connected to the positioning block (121).

4. The multi-variety interchangeable mold according to claim 3, characterized in that: A first guide groove (111) is provided on the top of the guide column (110) on a side close to the mold (2); the first guide groove (111) has a first contact surface (112) that contacts the side wall of the second guide groove (207) and a first guide surface (113) that is inclined outward; and the positioning block (121) is provided on a side of the first guide groove (111) that is away from the mold (2).

5. The multi-variety interchangeable mold according to claim 4, characterized in that: A connecting plate (114) is fixedly provided on the guide column (110) and is located on the side of the first guide groove (111) away from the mold (2). The connecting plate (114) has a second guiding surface (115) extending along the surface of the first guiding surface (113) on the side facing the mold (2). The positioning block (121) is rotatably connected to the connecting plate (114).

6. The multi-variety interchangeable mold according to claim 5, characterized in that: The positioning block (121) has a second contact surface (124) on the side facing the guide column (110), and the positioning block (121) has a third guide surface (125) on the side facing the mold (2); when the second contact surface (124) contacts the guide column (110), the third guide surface (125) and the second guide surface (115) are located in the same plane.

7. A multi-variety interchangeable mold according to any one of claims 1 to 6, characterized in that: The transmission mechanism (210) comprises a first piston chamber (211) arranged at one end of the movable hole (206) away from the molding chamber and connected thereto, a first piston block (212) arranged in the first piston chamber (211) and connected to the movable rod (203), a second piston chamber (213) arranged at the bottom of the guide hole (204) and connected thereto, and a second piston block (214) arranged in the second piston chamber (213) and connected to the guide rod (205), wherein the first piston chamber (211) is connected to the second piston chamber (213).

8. The multi-variety interchangeable mold according to claim 7, characterized in that: At least two guide rods (205) are provided and are evenly distributed along the circumference of the mold (2); the bottom of the guide rod (205) is connected to the bottom of the guide hole (204) via an elastic member (209).

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