Die-casting sprue bush

Abstract

The utility model relates to the technical field of sprue bushes, in particular to a die-casting sprue bush which comprises an outer sprue rod and an inner sprue rod, the inner sprue rod is detachably installed in the outer sprue rod, a heat dissipation cavity is formed between the outer sprue rod and the inner sprue rod, and a heat dissipation mechanism is arranged in the heat dissipation cavity. The heat dissipation mechanism comprises a plurality of groups of annular pipes, a conveying pipe is connected between every two groups of annular pipes which are adjacent up and down, connecting pipes are connected to the side walls of the two groups of annular pipes which are located at the uppermost part and the lowermost part, a water inlet pipe and a water outlet pipe are in threaded connection to the two groups of connecting pipes respectively, and the water inlet pipe and the water outlet pipe are both installed on the outer sprue rod. The heat dissipation mechanism is convenient to install through the heat dissipation cavity between the inner sprue rod and the outer sprue rod, heat on the inner sprue rod can be rapidly transferred and cooled through the arrangement of the heat dissipation mechanism, and damage to the sprue cover caused by too high temperature is avoided; and the inner sprue rod and the outer sprue rod are detachably arranged, so that maintenance is convenient, and convenience is provided for use.

Description

Technical Field

[0001] The utility model relates to the technical field of pouring sleeves, in particular to a die-casting pouring sleeve. Background Art

[0002] The sprue bushing is an important component of the die-casting machine. It forms a straight runner to ensure smooth movement of the injection punch, stable pressure transmission and filling of the raw materials, and is used to connect the molding mold and the metal accessories of the injection molding machine.

[0003] The Chinese patent with the publication number CN117047637A discloses a die-casting machine sprue sleeve, including a sprue sleeve body, an inlet port is provided at the front end of the sprue sleeve body, and an injection channel is provided inside the sprue sleeve body, the injection channel is in the shape of a hollow cylinder, and the injection channel is used to guide the raw material entering the inlet port. The present invention also provides a production process of a sprue sleeve for a die-casting machine, which can clamp and fix the sprue sleeve body through a limiting mechanism, and polish the inlet port provided at the front end of the sprue sleeve body through a grinding mechanism and an adjusting mechanism, so as to avoid damage to the inlet port due to uneven force during polishing, make the polishing device more applicable to different types of sprue sleeve bodies, and make the inlet port of the sprue sleeve body more evenly polished.

[0004] However, the above-mentioned sprue sleeve has a poor cooling effect in actual use, and the temperature of the molten metal flowing through it is high. Long-term use may cause the sprue sleeve to be damaged due to excessive temperature, and it is not easy to disassemble and repair, which brings inconvenience to use. Utility Model Content

[0005] The utility model aims to provide a die-casting pouring sleeve in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is: a die-casting gate sleeve, comprising an outer gate rod and an inner gate rod, wherein the inner gate rod can be detachably installed inside the outer gate rod, a heat dissipation cavity is formed between the outer gate rod and the inner gate rod, and a heat dissipation mechanism is arranged inside the heat dissipation cavity;

[0007] The heat dissipation mechanism includes several groups of annular tubes, which are evenly sleeved on the outside of the inner gate rod from top to bottom. A transmission pipe is connected between two adjacent groups of annular tubes above and below. Connecting pipes are connected to the side walls of the two groups of annular tubes located at the top and the bottom. The two groups of connecting pipes are respectively threaded with water inlet pipes and water outlet pipes, and the water inlet pipes and water outlet pipes are both installed on the outer gate rod.

[0008] Preferably, the external gate rod includes an outer rod, the end of the outer rod is connected to the external gate seat, a channel adapted to the internal gate rod is formed between the external gate seat and the outer rod, two sets of mounting grooves are opened on the side wall of the outer rod, the water inlet pipe and the water outlet pipe are both threadedly connected to the side wall of the outer rod, and the ends of the water inlet pipe and the water outlet pipe away from the connecting pipe extend into the corresponding mounting groove.

[0009] Preferably, the inner gate rod includes a connecting plate, which is detachably connected to the bottom end of the outer rod, the top of the connecting plate is connected to the inner rod, the top of the inner rod is connected to the inner gate seat, a flow channel is formed between the inner gate seat, the inner rod and the connecting plate, and the outer wall of the inner gate seat is adapted to fit with the channel on the outer gate seat.

[0010] Preferably, two groups of mounting holes and two groups of mounting grooves 2 are symmetrically opened at the bottom end of the connecting plate, the mounting grooves 2 are connected to the mounting holes, bolts are threadedly connected to the mounting holes, one end of the bolts is threadedly connected to the bottom end of the outer rod, and the other end of the bolts is abutted against the mounting grooves 2.

[0011] Preferably, two groups of installation cavities are symmetrically provided on the external gate seat, the installation cavities are connected with the channels on the external gate seat, a spring is installed inside the installation cavity, the other end of the spring is connected with an abutment block, the side wall of the abutment block is slidably connected to the installation cavity, the end of the abutment block away from the spring abuts with the internal gate seat in the internal gate rod, and the internal gate seat is provided with an abutment groove adapted to the abutment block.

[0012] Preferably, a heat conducting plate is installed on the inner wall of the annular tube, and the inner wall of the heat conducting plate is connected to the inner rod side wall of the inner gate rod.

[0013] Compared with the prior art, the above-mentioned technical scheme of the utility model has the following beneficial technical effects: the utility model facilitates the installation of the heat dissipation mechanism through the heat dissipation cavity between the inner gate rod and the outer gate rod, and the setting of the heat dissipation mechanism facilitates the rapid transfer and cooling of the heat on the inner gate rod, thereby avoiding damage to the gate mask caused by excessive temperature; the inner gate rod and the outer gate rod are detachable, which is convenient for maintenance and provides convenience for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the internal structure of the external gate rod of the utility model;

[0015] Figure 2 It is a cross-sectional view of the ingate rod of the utility model;

[0016] Figure 3 It is a schematic diagram of the connection mode between the inner gate rod and the outer gate rod of the utility model;

[0017] Figure 4 It is a partial structural schematic diagram of the heat dissipation mechanism of the utility model.

[0018] Figure numerals: 1. outer rod; 101. outer gate seat; 102. mounting groove 1; 103. mounting cavity; 104. spring; 105. abutment block; 2. connecting plate; 201. mounting groove 2; 202. mounting hole; 203. inner rod; 204. inner gate seat; 205. runner; 206. abutment groove; 207. bolt; 3. annular tube; 301. heat conduction plate; 302. transmission tube; 303. connecting tube; 304. water inlet pipe; 305. water outlet pipe. DETAILED DESCRIPTION

[0019] Embodiment 1

[0020] like Figures 1 to 4 As shown, the utility model proposes a die-casting gate sleeve, including an outer gate rod and an inner gate rod, the inner gate rod is detachably installed inside the outer gate rod, a heat dissipation cavity is formed between the outer gate rod and the inner gate rod, and a heat dissipation mechanism is arranged inside the heat dissipation cavity.

[0021] Furthermore, the external gate rod includes an external rod 1, the end of the external gate seat 101 is connected to the external gate seat 101, a channel adapted to the internal gate rod is formed between the external gate seat 101 and the external rod 1, two sets of mounting grooves 102 are opened on the side wall of the external rod 1, the water inlet pipe 304 and the water outlet pipe 305 are both threadedly connected to the side wall of the external rod 1, and the ends of the water inlet pipe 304 and the water outlet pipe 305 away from the connecting pipe 303 are extended to the corresponding mounting groove 102.

[0022] Furthermore, the inner gate rod includes a connecting plate 2, which is detachably connected to the bottom end of the outer rod 1, the inner rod 203 is connected to the top of the connecting plate 2, the inner rod 203 is connected to the top of the inner rod 203, a flow channel 205 is formed between the inner gate seat 204, the inner rod 203 and the connecting plate 2, the outer wall of the inner gate seat 204 is adapted to fit with the channel on the outer gate seat 101, and the top surface of the spring 104 and the top surface of the outer gate seat 101 are located on the same horizontal plane.

[0023] Furthermore, two groups of mounting holes 202 and two groups of mounting grooves 201 are symmetrically provided at the bottom end of the connecting plate 2. The mounting grooves 201 are connected to the mounting holes 202. Bolts 207 are threadedly connected to the mounting holes 202. One end of the bolts 207 is threadedly connected to the bottom end of the outer rod 1, and the other end of the bolts 207 is abutted against the mounting grooves 201. The bolts 207 are used to fix the connecting plate 2 and the outer rod 1. The mounting grooves 201 are used to accommodate the ends of the bolts 207 to avoid protrusions that may cause the installation of the sprue sleeve.

[0024] like Figure 1 , Figure 3 and Figure 4As shown, the heat dissipation mechanism includes a plurality of groups of annular tubes 3, which are evenly sleeved on the outside of the inner gate rod from top to bottom, a transmission pipe 302 is connected between two adjacent groups of annular tubes 3, and connecting tubes 303 are connected to the side walls of the two groups of annular tubes 3 located at the top and the bottom, and the two groups of connecting tubes 303 are respectively threadedly connected with a water inlet pipe 304 and a water outlet pipe 305, and the water inlet pipe 304 and the water outlet pipe 305 are both installed on the outer gate rod; the arrangement of the annular tube 3 facilitates increasing the contact area between the cooling water inside the annular tube 3 and the inner rod 203, thereby further improving the heat dissipation efficiency.

[0025] Furthermore, a heat conducting plate 301 is installed on the inner wall of the annular tube 3, and the inner wall of the heat conducting plate 301 is connected to the side wall of the inner rod 203 in the inner gate rod; the setting of the heat conducting plate 301 can not only transfer the heat on the inner rod 203 to facilitate heat dissipation, but also improve the connection stability between the annular tube 3 and the inner rod 203.

[0026] In this embodiment, after the inner gate rod is installed at a suitable position inside the outer gate rod, the water inlet pipe 304 or the water outlet pipe 305 is rotated to make its connection end close to the corresponding connecting pipe 303 until the connection end of the water inlet pipe 304 or the water outlet pipe 305 is threadedly connected with the connecting pipe 303, and the annular tube 3 corresponding to the connecting pipe 303 is fixedly connected to the side wall of the inner rod 203 in the inner gate rod through the heat conducting plate 301, so that the inner gate rod can be further limited with the outer gate rod, the connection stability is improved, and the heat dissipation mechanism can also be connected;

[0027] Cooling water is transported to the annular tube 3 through the outlet pipe 305, and cooling water is injected into the annular tubes 3 through the connection of the plurality of transmission pipes 302. The heat on the inner gate rod can be quickly transferred to the cooling water through the heat conducting plate 301, and the cooling water that absorbs the heat is discharged from the inlet pipe 304. This cycle is repeated to reduce the temperature of the inner gate rod to avoid damage caused by excessive temperature.

[0028] When the gate sleeve needs to be inspected, the bolt 207 is turned to separate it from the connecting plate 2, and the water inlet pipe 304 and the water outlet pipe 305 are turned to separate them from the corresponding connecting pipe 303. The connecting plate 2 can be held by hand to drive the inner rod 203 and the inner gate seat 204 to separate from the outer rod 1 and the outer gate seat 101, and the inner gate rod is removed from the inside of the outer gate rod for easy inspection.

[0029] Embodiment 2

[0030] like Figures 1 to 3As shown, the present invention proposes a die-casting gate sleeve. Compared with the first embodiment, two groups of mounting cavities 103 are symmetrically opened on the external gate seat 101, and the mounting cavity 103 is connected with the channel on the external gate seat 101. A spring 104 is installed inside the mounting cavity 103, and the other end of the spring 104 is connected with an abutment block 105. The side wall of the abutment block 105 is slidably connected to the mounting cavity 103, and the end of the abutment block 105 away from the spring 104 abuts against the internal gate seat 204 in the internal gate rod, and the internal gate seat 204 is provided with an abutment groove 206 adapted to the abutment block 105.

[0031] In this embodiment, when the inner gate rod is inserted into the outer gate rod along the channel so that the inner gate seat 204 fits against the inner wall of the outer gate seat 101, the inner gate seat 204 can be initially limited by the spring 104 and the abutment block 105 to improve the connection stability, making it easier for the bolt 207 to fix the connecting plate 2 and the outer rod 1, facilitating installation and disassembly, and preventing the inner rod 203 from falling off easily from the outer rod 1.

[0032] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A die casting sprue bushing, characterized in that: It includes an outer gate rod and an inner gate rod, wherein the inner gate rod can be detachably mounted inside the outer gate rod, a heat dissipation cavity is formed between the outer gate rod and the inner gate rod, and a heat dissipation mechanism is arranged inside the heat dissipation cavity; The heat dissipation mechanism comprises a plurality of groups of annular tubes (3), which are evenly sleeved on the outside of the inner gate rod from top to bottom, a transmission tube (302) is connected between two groups of annular tubes (3) adjacent to each other, a connecting tube (303) is connected to the side walls of the two groups of annular tubes (3) located at the top and the bottom, and a water inlet pipe (304) and a water outlet pipe (305) are respectively threadedly connected to the two groups of connecting tubes (303), and the water inlet pipe (304) and the water outlet pipe (305) are both installed on the outer gate rod.

2. A die-casting sprue bushing according to claim 1, characterized in that: The external gate rod comprises an external gate rod (1), the end of the external gate rod (1) is connected to an external gate seat (101), a channel adapted to the internal gate rod is formed between the external gate seat (101) and the external gate rod (1), two groups of mounting grooves (102) are provided on the side wall of the external gate rod (1), an inlet pipe (304) and an outlet pipe (305) are both threadedly connected to the side wall of the external gate rod (1), and the ends of the inlet pipe (304) and the outlet pipe (305) away from the connecting pipe (303) extend to the inside of the corresponding mounting groove (102).

3. A die casting sprue bushing according to claim 1 or 2, characterized in that: The inner gate rod comprises a connecting plate (2), the connecting plate (2) is detachably connected to the bottom end of the outer gate rod (1), the top end of the connecting plate (2) is connected to the inner gate rod (203), the top end of the inner gate rod (203) is connected to the inner gate seat (204), a flow channel (205) is formed between the inner gate seat (204), the inner gate rod (203) and the connecting plate (2), and the outer wall of the inner gate seat (204) is adapted to fit the channel on the outer gate seat (101).

4. A die-casting sprue bushing according to claim 3, characterized in that: Two groups of mounting holes (202) and two groups of mounting grooves (201) are symmetrically provided at the bottom end of the connecting plate (2); the mounting grooves (201) are connected to the mounting holes (202); bolts (207) are threadedly connected to the mounting holes (202); one end of the bolts (207) is threadedly connected to the bottom end of the outer rod (1); and the other end of the bolts (207) is in contact with the mounting grooves (201).

5. The die casting sprue bushing according to claim 3, characterized in that: Two groups of mounting cavities (103) are symmetrically provided on the external gate seat (101), the mounting cavities (103) are connected to the channels on the external gate seat (101), a spring (104) is installed inside the mounting cavity (103), the other end of the spring (104) is connected to an abutment block (105), the side wall of the abutment block (105) is slidably connected to the mounting cavity (103), one end of the abutment block (105) away from the spring (104) is abutted against the internal gate seat (204) in the internal gate rod, and the internal gate seat (204) is provided with an abutment groove (206) adapted to the abutment block (105).

6. The die casting sprue bushing according to claim 3, characterized in that: A heat conducting plate (301) is installed on the inner wall of the annular tube (3), and the inner wall of the heat conducting plate (301) is connected to the side wall of the inner rod (203) in the ingate rod.

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