Constant temperature system for injection barrel of die-casting machine

Abstract

The utility model provides a constant temperature system for an injection barrel of a die-casting machine. The constant temperature system comprises the injection barrel, a profiling oil pipe, an injection rod, heat preservation cotton, a temperature measuring device and a die temperature controller. The injection barrel is composed of a cylinder body, a feeding port and a temperature measuring device, the temperature measuring device inputs temperature data of the injection barrel into a control system of the mold temperature controller, and the temperature of the injection barrel is detected and controlled in real time. The profiling oil pipe is connected with a mold temperature controller, consists of a copper pipe, is tightly wound on the injection barrel and does not cover a feeding hole, so that heat is quickly and uniformly transferred into the injection barrel; the heat preservation cotton is wound outside the profiling oil pipe and covers the cylinder body of the injection barrel, and heat loss is prevented. When the constant-temperature system for the injection barrel of the die-casting machine is used, the temperature required by the injection barrel can be accurately controlled through the die temperature controller so as to meet the die-casting production requirement, hot die parts do not need to be produced, and raw material waste is avoided; the die casting microstructure grains are more uniform and fine, the mechanical property is improved, the rejection rate is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure casting, specifically a constant temperature system for a shot cylinder of a die-casting machine. Background Art

[0002] Die casting is a casting method in which liquid or semi-solid metal or alloy, or liquid metal or alloy containing a reinforcement phase, is filled into a die cavity under high pressure and at a high speed, and the metal or alloy is solidified under pressure to form a casting. Common die casting pressures range from 4 to 500 MPa, metal filling speeds from 0.5 to 120 m / s, and filling times of approximately 0.01 to 0.2 seconds (depending on the size of the casting). It is generally used for casting non-ferrous alloys.

[0003] Both the high-pressure casting mold and the injection molding system need to be preheated to a certain temperature before production. In the existing technology, most die-casting molds are heated by a mold temperature controller or a mold baking device, but the injection molding cylinder is still preheated in the form of a hot mold. This preheating method requires the production of 20 to 30 molds to reach the production temperature, which reduces production efficiency and causes waste of raw materials. At the same time, the use of this method for preheating and production will also cause uneven temperature of the injection molding system, resulting in abnormal grain size of the casting, which in turn affects the stability of the casting performance and causes a decline in product quality.

[0004] In order to reduce the waste of raw materials and improve the production efficiency and product quality of die-casting, it is necessary to develop an efficient, convenient and economical die-casting machine shot cylinder constant temperature system. Utility Model Content

[0005] The utility model aims to provide a constant temperature system for the shot cylinder of a die-casting machine, so as to solve the problems of reduced production efficiency, waste of raw materials and product quality proposed in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A constant temperature system for a shot cylinder of a die-casting machine comprises a shot cylinder, a contoured oil pipe, a shot rod, thermal insulation cotton, a temperature measuring device and a mold temperature controller.

[0008] The shot cylinder consists of a cylinder body, a feed port, and a temperature measuring device. The temperature measuring device is located on the side opening where the cylinder body connects to the shot rod, parallel to the shot rod's axis. The temperature measuring device inputs the shot cylinder temperature data into the mold temperature controller's control system via a temperature measuring line, monitoring and controlling the shot cylinder temperature in real time.

[0009] The profiling oil pipe is composed of an oil inlet device, an oil outlet device and a delivery pipeline. The profiling oil pipe oil inlet device is connected to the oil outlet of the mold temperature controller, and the profiling oil pipe oil outlet device is connected to the oil inlet of the mold temperature controller.

[0010] Preferably, the contoured oil pipe is tightly wound around the shot cylinder in a spiral shape without covering the feed port, so that heat can be quickly and evenly transferred to the shot cylinder without affecting the aluminum liquid supply to the soup feeder.

[0011] Preferably, the contoured oil pipe is made of a copper pipe, which facilitates efficient and rapid heat transfer.

[0012] Preferably, the thermal insulation cotton is evenly wrapped around the outside of the contoured oil pipe, covering the cylinder body of the injection barrel to prevent heat loss.

[0013] The die-casting machine shot cylinder constant temperature system can accurately control the required temperature of the shot cylinder through the mold temperature controller when in use to meet the die-casting production requirements.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The die-casting machine's shot cylinder constant temperature system, provided by this utility model, consists of a shot cylinder, a shot rod, a contoured oil pipe, thermal insulation, a temperature measuring device, and a mold temperature controller. The contoured copper oil pipe is tightly wound around the shot cylinder in a spiral, and a layer of thermal insulation is evenly wrapped around the outside of the pipe, ensuring rapid and even heat transfer into the shot cylinder, minimizing heat loss. A temperature measuring device, installed on the shot cylinder and connected to the mold temperature controller control system, enables real-time control of the shot cylinder temperature to meet the production requirements of different alloys.

[0016] The die-casting machine shot cylinder constant temperature system provided by the utility model does not need to produce hot molds when in use, thereby improving production efficiency and avoiding waste of raw materials; the microstructure grain size of the produced die-casting parts is more uniform and fine, the mechanical properties are greatly improved, the scrap rate is reduced, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] In the figure: 1- shot cylinder; 2- profiled oil pipe; 3- shot rod; 4- die casting machine equipment; 5- thermal insulation cotton; 6- temperature measuring device; 7- mold temperature controller; 11- shot cylinder feed port; 21- profiled oil pipe oil inlet device; 22- profiled oil pipe oil outlet device. DETAILED DESCRIPTION

[0020] The following embodiments of the present invention are described in detail. The following embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operating procedures. However, the protection scope of the present invention is not limited to the following embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, the utility model provides a constant temperature system for a die-casting machine shot cylinder, which is mounted on a die-casting machine device 4 and includes a shot cylinder 1, a contoured oil pipe 2, a shot rod 3, a mold temperature controller 7, thermal insulation cotton 5, and a temperature measuring device 6.

[0023] The shot cylinder 1 is composed of a shot cylinder body, a feed port 11 and a temperature measuring device 6 .

[0024] The temperature measuring device 6 is arranged on the side opening connecting the cylinder body of the shooting cylinder and the shooting rod 3, and is parallel to the axial direction of the shooting rod 3. The shooting cylinder temperature data is input into the control system of the mold temperature controller 7 through the temperature measuring line to control the shooting cylinder temperature in real time.

[0025] The profiling oil pipe 2 is composed of an oil inlet device 21, an oil outlet device 22 and a delivery pipeline. The profiling oil pipe oil inlet device 21 is connected to the oil outlet of the mold temperature controller 7, and the profiling oil pipe oil outlet device 22 is connected to the oil inlet of the mold temperature controller 7.

[0026] The contoured oil pipe 2 is tightly wound around the shot cylinder 1 in a spiral shape and does not cover the feed port 11, so that heat can be quickly and evenly transferred to the shot cylinder without affecting the aluminum liquid supply to the ladling machine.

[0027] The contoured oil pipe 2 is made of a copper pipe, which facilitates efficient and rapid heat transmission.

[0028] A layer of heat-insulating cotton 5 is evenly wrapped around the outside of the profiled oil pipe 2 to prevent heat loss.

[0029] The die-casting machine shot cylinder constant temperature system can accurately control the required temperature of the shot cylinder through the mold temperature controller when in use to meet the die-casting production requirements.

[0030] When producing AlSi10Mn die-castings, the die-casting machine shot cylinder constant temperature system provided by the present invention can accurately control the shot cylinder temperature. At the beginning of production, the shot cylinder temperature is relatively low. The mold temperature controller heating mode can quickly raise the temperature inside the shot cylinder to the required die-casting temperature of 300°C, allowing the die-casting system to quickly enter a stable state. There is no need to preheat the shot cylinder during production of hot molds, which improves production efficiency, avoids waste of raw materials, and saves production costs. As die-casting production continues, the heat storage in the shot cylinder will cause the local temperature of the shot cylinder to rise. At this time, the mold temperature controller automatically activates the cooling mode, reducing the shot cylinder temperature to 300°C, ensuring the stability of die-casting production, improving the yield rate of die-casting parts, and further saving production costs.

[0031] In the microstructure of stable production castings, the grain size can be reduced to 25μm, pre-crystallization formation can be reduced by 80%, and the mechanical properties of die castings can be improved by 10-15MPa.

[0032] The above describes in detail the preferred embodiments of the present invention. It should be understood that a person skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solution that can be derived by a person skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology shall be within the scope of protection defined by the claims.

Claims

1. A constant temperature system for the shot cylinder of a die casting machine, characterized in that: The device is mounted on a die-casting machine (4), and includes a shot cylinder (1), a contoured oil pipe (2), a shot rod (3), heat-insulating cotton (5), and a mold temperature controller (7); The injection cylinder (1) is composed of a cylinder body, a feed port (11) and a temperature measuring device (6); The temperature measuring device (6) is arranged on a side opening connecting the cylinder body of the shot cylinder (1) and the shot rod (3), and is parallel to the axis of the shot rod (3). The temperature data of the shot cylinder (1) is input into the mold temperature controller (7) control system through the temperature measuring line, so as to detect and control the temperature of the shot cylinder (1) in real time. The contoured oil pipe (2) is tightly wound around the cylinder body of the injection barrel (1) in a spiral shape and does not cover the feed port (11); The heat-insulating cotton (5) is evenly wound around the outside of the contoured oil pipe (2) and covers the cylinder body of the injection barrel (1).

2. The die casting machine shot cylinder constant temperature system according to claim 1, characterized in that: The profiling oil pipe (2) is composed of an oil inlet device (21), an oil outlet device (22) and a delivery pipeline. The profiling oil pipe oil inlet device (21) is connected to the oil outlet of the mold temperature controller (7), and the profiling oil pipe oil outlet device (22) is connected to the oil inlet of the mold temperature controller (7).

3. The die casting machine shot cylinder constant temperature system according to claim 1, characterized in that: The contoured oil pipe (2) is a copper pipe.

Images