Die casting machine

Abstract

The utility model relates to the technical field of die casting, and discloses a die casting machine which comprises an injection mechanism and a slurrying mechanism, the injection mechanism is provided with an injection cylinder, the slurrying mechanism comprises a slurrying cylinder, one end of the slurrying cylinder is provided with a discharge port, and a screw with a spiral blade is rotatably arranged in the slurrying cylinder; the driving device is connected with the screw rod and can drive the screw rod to rotate; and the transfer device is connected with the pulping cylinder and can drive the pulping cylinder to move, so that the discharge port is far away from / close to the feed port of the injection cylinder. The die-casting machine can be suitable for a conventional die-casting working condition and a semi-solid die-casting working condition, and the precision of die-casting parameters can also be improved.

Description

Technical Field

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

[0002] Semi-solid die-casting technology is a die-casting technology suitable for complex alloy materials. In the traditional semi-solid die-casting process, a screw is used to shear the heated chips and granules of the alloy material into a molten slurry containing solid phase components and then stored in the front end of the die-casting machine barrel. During the injection process, the oil cylinder pushes the entire screw forward to squeeze the molten metal into the mold for molding.

[0003] On the one hand, traditional semi-solid die-casting machines only support the use of screw feeding and can only be used for semi-solid die-casting production, with poor flexibility. When production targets change, it is necessary to switch to other types of die-casting equipment for die-casting operations. The opening and closing mold systems common to conventional die-casting machines are not effectively utilized, resulting in idle waste of equipment. On the other hand, the binding of the screw and the injection system greatly increases the load of the injection system, and the accuracy of the injection action cannot be guaranteed, affecting the system's process parameters such as soup feed, speed and pressure.

[0004] Therefore, conventional semi-solid die-casting machines cannot meet the production needs of modern die-casting factories, and there is an urgent need to develop a high-precision die-casting machine that can adapt to a variety of die-casting conditions. Utility Model Content

[0005] The utility model is made to solve the above technical problems, and one of its purposes is to provide a die-casting machine that can be applicable to conventional die-casting conditions and semi-solid die-casting conditions.

[0006] Another object of the utility model is to provide a die-casting machine that can improve the accuracy of die-casting parameters.

[0007] According to one embodiment of the utility model, a die-casting machine is provided, including an injection mechanism and a pulping mechanism, the injection mechanism has an injection cylinder, and the pulping mechanism includes: a pulping cylinder, one end of which is formed with a discharge port, and a screw with spiral blades is rotated inside; a driving device, connected to the screw, and capable of driving the screw to rotate; a transfer device, connected to the pulping cylinder, and capable of driving the pulping cylinder to move so that the discharge port is away from / close to the feed port of the injection cylinder.

[0008] As an embodiment, the transfer device includes: a first transfer device capable of driving the pulping cylinder to reciprocate along a first direction.

[0009] As an embodiment, the transfer device further includes: a second transfer device, which is arranged between the first transfer device and the pulping cylinder and can drive the pulping cylinder to reciprocate along the second direction.

[0010] As an embodiment, the transfer device further includes: a third transfer device, which is arranged between the second transfer device and the pulping cylinder and can drive the pulping cylinder to rotate around a second direction.

[0011] As an implementation manner, the first direction is a horizontal direction, and the second direction is a vertical direction.

[0012] As an embodiment, it also includes: a controller connected to the driving device, the first transfer device, the second transfer device, and the third transfer device.

[0013] As an implementation mode, the screw is provided with an angle absolute encoder connected to the controller, which can feed back the rotation angle of the screw to the controller.

[0014] As an embodiment, the driving device includes a servo pump station and a hydraulic motor.

[0015] As an embodiment, the pulping mechanism further includes: a first heating structure, which is arranged on the pulping cylinder.

[0016] As an embodiment, the pulping mechanism further comprises: a connector, which is arranged on the discharge port, one end of which can be inserted into the feed port of the injection cylinder or abut against the feed port of the injection cylinder.

[0017] According to the above description and practice, the injection mechanism and the pulping mechanism in the die-casting machine described in the utility model are split structures, and the pulping mechanism can change the working position by the transfer device. During the die-casting operation, the discharge port of the pulping mechanism is close to the injection mechanism, and the semi-solid slurry can be provided to the injection mechanism to perform the semi-solid die-casting operation. After the discharge port of the pulping mechanism is away from the injection mechanism, the conventional soup feeder can be used to provide the molten metal and switch to the conventional die-casting operation. In addition, the injection mechanism in the die-casting machine can adopt the existing injection system, which can reduce the cost. In addition, compared with the structure of the screw and the injection barrel together in the traditional semi-solid die-casting machine, this split structure does not need to bear a large pressure in the pulping barrel during the die-casting operation, which can avoid the problem of liquid leakage in the pulping barrel, and there is no need to consider the risk of liquid leakage in the injection barrel, which improves the process range of semi-solid die-casting, supports a larger injection speed and pressure, and correspondingly, the control accuracy is also improved, which can be applied to complex semi-solid die-casting processes such as liquid die forging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a die-casting machine involved in one embodiment of the utility model under semi-solid die-casting conditions.

[0019] Figure 2It is a schematic structural diagram of a die-casting machine involved in one embodiment of the utility model under conventional die-casting working conditions.

[0020] Figure 3 It is a structural schematic diagram of a pulping mechanism in a die-casting machine involved in one embodiment of the utility model.

[0021] The reference numerals in the figure are:

[0022] 1. Pulping mechanism 11. Pulping cylinder

[0023] 12. Driving device 13. First transfer device

[0024] 14. Second transfer device 15. Controller

[0025] 16. First heating structure 17. Connector

[0026] 2. Shot mechanism 21. Shot cylinder

[0027] 22. Feed port 3. Soup feeder DETAILED DESCRIPTION

[0028] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0029] In addition, the accompanying drawings are only schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, 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 utility model.

[0030] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] According to one embodiment of the present invention, a die casting machine is provided. Figures 1 to 3 The die-casting machine includes an injection mechanism 2 and a pulping mechanism 1. The injection mechanism 2 can adopt the existing injection equipment applied to conventional die-casting conditions, such as the injection system of a conventional cold chamber die-casting machine and the injection system of a horizontal die-casting machine. The injection mechanism 2 has at least one injection barrel 21 for receiving the slurry from the pulping mechanism 1. The other specific structures and working methods of the injection mechanism 2 are not the innovations of the present disclosure and will not be described in detail here.

[0032] The pulping mechanism 1 includes a pulping cylinder 11, a driving device 12 and a transfer device. The pulping cylinder 11 is a cylindrical structure, one end of which is provided with an inlet and the other end is provided with an outlet. After the material enters the pulping cylinder 11 from the inlet, it is processed to generate a semi-solid slurry and is output from the outlet. A screw is rotatably arranged in the pulping cylinder 11, and both ends of the screw are rotatably connected to the cylinder wall at both ends of the pulping cylinder 11 and are sealed with the cylinder wall to prevent slurry leakage. Spiral blades are arranged on the outer periphery of the screw. When the screw rotates, the blades can stir the heated material in the pulping cylinder 11 and shear it to generate a semi-solid slurry.

[0033] The drive device 12 is connected to the screw rod and can drive the screw rod to rotate. In this embodiment, the drive device 12 includes a servo pump station and a hydraulic motor. The output end of the hydraulic motor is connected to the screw rod and can drive the screw rod to rotate. By adopting this hydraulic drive method, the output end torque is larger and the speed reduction mechanism can be omitted. In other embodiments, the drive device 12 can also adopt a power device such as a motor or an engine, which can also drive the screw rod to rotate.

[0034] The transfer device is connected to the pulping cylinder 11, and can drive the pulping cylinder 11 to move so that the discharge port is away from / close to the feed port 22 of the injection cylinder 21. The transfer device is a device that can drive the pulping cylinder 11 to move, and for example, a telescopic device, a motorized device, a rotating device, etc. can be used to achieve this function. When the transfer device drives the pulping cylinder 11 to move so that the discharge port is close to the feed port 22 of the injection cylinder 21 until it is opposite to the feed port 22, the discharge port is opened, and the screw in the pulping mechanism 1 rotates to input the semi-solid slurry therein into the injection cylinder 21, and the injection mechanism 2 performs subsequent die-casting operations. This state is Figure 1The semi-solid die-casting working condition shown in FIG. 2 is shown in FIG. 3 ; when the transfer device drives the slurry cylinder 11 to move so that the discharge port is away from the feed port 22 of the injection cylinder 21, the conventional soup feeder 3 or the like can then be used to provide the molten metal to the injection cylinder 21, and then the injection mechanism 2 performs the subsequent die-casting operation. This state is Figure 2 Conventional die casting conditions shown in .

[0035] The injection mechanism 2 and the pulping mechanism 1 of the die-casting machine are separate structures. The pulping mechanism 1 can change the working position by the transfer device. During the die-casting operation, the discharge port of the pulping mechanism 1 is close to the injection mechanism 2, and the semi-solid slurry can be provided to the injection mechanism 2 to perform the semi-solid die-casting operation. After the discharge port of the pulping mechanism 1 is away from the injection mechanism 2, the conventional soup feeder 3 can be used to provide molten metal and switch to the conventional die-casting operation. In addition, the injection mechanism 2 in the die-casting machine can adopt the existing injection system, which can reduce the cost. In addition, compared with the structure of the screw and the injection barrel 21 together in the traditional semi-solid die-casting machine, this split structure does not need to bear a large pressure in the pulping barrel 11 during the die-casting operation, which can avoid the leakage problem in the pulping barrel 11, and the injection barrel 21 does not need to consider the leakage problem, which improves the process range of semi-solid die-casting, supports a larger injection speed and pressure, and correspondingly, the control accuracy is also improved, which can be applied to complex semi-solid die-casting processes such as liquid die forging.

[0036] As an embodiment, the transfer device includes a first transfer device 13, and the first transfer device 13 can drive the pulping cylinder 11 to reciprocate along a first direction. Figure 1 and Figure 3 As shown, the first transfer device 13 adopts a structure of a transverse track and a driving wheel. The driving wheel reciprocates on the transverse track to drive the upper slurry cylinder 11, the driving device 12 and other structures to move. During the die-casting operation, the discharge port of the slurry cylinder 11 can be controlled to move away from / close to the feed port 22 of the injection cylinder 21. The first transfer device 13 of this structural form can not only realize the above-mentioned movement function, but also has strong stability, and can stably support the upper slurry cylinder 11, the driving device 12 and other structures.

[0037] As an embodiment, the transfer device further includes a second transfer device 14, which is disposed between the first transfer device 13 and the pulping cylinder 11 and can drive the pulping cylinder 11 to reciprocate along the second direction. Figure 3As shown, the second transfer device 14 is a plurality of servo lifting devices, the lower end of which is connected to the first transfer device 13, and the upper end is connected to the pulping cylinder 11, the driving device 12 and other structures, and can drive the pulping cylinder 11 to reciprocate along the second direction. By setting up the second transfer device 14, the discharge port of the pulping cylinder 11 can be moved away from / close to the feed port 22 of the injection cylinder 21 from multiple directions, and collisions between adjacent devices can be avoided. For example, the first direction is the horizontal direction in this embodiment, and the second direction is the vertical direction in this embodiment. When the discharge port of the pulping cylinder 11 and the feed port 22 of the injection cylinder 21 need to be close, the two can be kept at a certain distance in the vertical direction first, and then the pulping cylinder 11 is moved in the horizontal direction to gradually approach the feed port 22 to just above the feed port 22, and then the pulping cylinder 11 is moved vertically so that the discharge port and the feed port 22 are against each other. This process can avoid collisions between adjacent devices. In other embodiments, the user may also set the first direction and the second direction according to factors such as the layout location of the die-casting machine and the site environment, and the above-mentioned technical effect of avoiding collision may be achieved.

[0038] As an embodiment, the transfer device further includes a third transfer device, which is disposed between the second transfer device 14 and the pulping cylinder 11 and can drive the pulping cylinder 11 to rotate around the second direction. Figure 3 As shown, one end of the pulping cylinder 11 and the driving device 12 are fixedly mounted on a bottom plate, the upper end of the second transfer device 14 is connected to a support plate, and the third transfer device is a rotating device arranged between the bottom plate and the support plate, such as a shooting platform rotating device, which can drive the bottom plate, the driving device 12 and the pulping cylinder 11 to rotate around the second direction. After the third transfer device is arranged, the freedom of movement of the pulping cylinder 11 is further increased, which is more conducive to avoiding collisions between adjacent devices, and conveniently docking the discharge port of the pulping cylinder 11 with the feed port 22 of the shot cylinder 21.

[0039] As an embodiment, the die casting machine further includes a controller 15, which is connected to the driving device 12, the first transfer device 13, the second transfer device 14, and the third transfer device, and can control these devices to operate in a desired manner, so as to realize the automatic control of the die casting operation. The controller 15 can be a Siemens S7-1200 or S7-1500 programmable controller.

[0040] It should be further explained that the function of the controller 15 to control the operation of the above-mentioned devices is a prior art, and the process can be realized not only by a preset program in the controller 15, but also by a simple hardware circuit. For example, the above-mentioned function in the controller 15 can be realized by a logic circuit in which the collector of a transistor and the emitter of another transistor are connected, which can be regarded as a simple AND gate circuit, that is, when the bases of the two transistors are both connected to a high level, the circuit is turned on, and as long as one of them is not connected to a high level, the circuit is not turned on, that is, the configuration of the corresponding number and specifications of transistors can realize the function of the logic circuit, so that the controller 15 can output corresponding control signals to the above-mentioned devices.

[0041] In other words, part of the innovation of the present disclosure is to realize the operation and transfer of the pulping mechanism 1 by means of the driving device 12 and the transfer device, and the relevant functional description of the controller 15 is intended to illustrate how the driving device 12 and the transfer device realize electrical control, and the specific model and operating principle of the controller 15 are prior art, so the relevant description should not be regarded as an improvement on the method itself or the computer program itself.

[0042] As an embodiment, an absolute value encoder of the rotation angle connected to the controller 15 is also provided on the screw, which can feed back the rotation angle of the screw to the controller 15, so that the controller 15 can accurately control the rotation of the screw. When it is necessary to input semi-solid slurry into the injection cylinder 21, by controlling the parameters such as the rotation speed and rotation angle of the screw, the output of the semi-solid slurry can be accurately controlled to improve the die casting quality.

[0043] As an embodiment, the pulping mechanism 1 further includes a first heating structure 16. The first heating structure 16 is disposed on the pulping cylinder 11. Figure 3 As shown, in this embodiment, the first heating structure 16 adopts the structure of an induction coil to heat the material in the pulping cylinder 11, and the material is processed into a semi-solid slurry in coordination with the rotation of the screw. In other embodiments, the first heating structure 16 may also adopt a heating device such as an infrared heating coil, which can also play the above role. When the heating structure is not provided, the heated material may also be directly input into the pulping cylinder 11, and then the screw may process it into a semi-solid slurry.

[0044] As an embodiment, the pulping mechanism 1 further includes a connector 17 disposed on the discharge port. When one end of the discharge port of the pulping cylinder 11 is close to the shot cylinder 21, the lower end of the connector 17 can be inserted into the feed port 22 of the shot cylinder 21 or abut against the feed port 22, so as to facilitate the input of semi-solid slurry into the shot cylinder 21 and prevent the semi-solid slurry from spilling onto the periphery of the shot cylinder 21. In addition, a servo valve or other equipment can also be disposed on the connector 17 to facilitate more accurate control of the flow rate of the semi-solid slurry.

[0045] It is obvious 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 features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A die casting machine, characterized in that: It includes an injection mechanism and a pulping mechanism, wherein the injection mechanism has an injection cylinder, and the pulping mechanism includes: A pulping cylinder, one end of which is formed with a discharge port, and a screw with spiral blades is rotated inside; A driving device, connected to the screw rod, capable of driving the screw rod to rotate; The transfer device is connected to the pulping cylinder and can drive the pulping cylinder to move so that the discharge port is away from / close to the feed port of the injection cylinder.

2. The die casting machine according to claim 1, characterized in that The transfer device comprises: The first transfer device can drive the pulping cylinder to reciprocate along a first direction.

3. The die casting machine according to claim 2, characterized in that The transfer device also includes: The second transfer device is arranged between the first transfer device and the pulping cylinder, and can drive the pulping cylinder to move back and forth along the second direction.

4. The die casting machine according to claim 3, characterized in that The transfer device also includes: The third transfer device is arranged between the second transfer device and the pulping cylinder, and can drive the pulping cylinder to rotate around a second direction.

5. The die casting machine according to claim 4, characterized in that The first direction is a horizontal direction, and the second direction is a vertical direction.

6. The die casting machine according to claim 4, characterized in that Also includes: A controller is connected with the driving device, the first transfer device, the second transfer device, and the third transfer device.

7. The die casting machine according to claim 6, characterized in that The screw is provided with an absolute value encoder for an angle of rotation connected to the controller, and can feed back the rotation angle of the screw to the controller.

8. The die casting machine according to claim 1, characterized in that The driving device comprises a servo pump station and a hydraulic motor.

9. The die casting machine according to claim 1, characterized in that: The pulping mechanism also includes: The first heating structure is arranged on the pulping cylinder.

10. The die casting machine according to claim 1, characterized in that: The pulping mechanism also includes: The connector is arranged on the discharge port, and one end of the connector can be inserted into the feed port of the injection cylinder or abut against the feed port of the injection cylinder.

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