Double-layer pressure chamber and die casting machine

Abstract

The utility model provides a double-layer pressure chamber and a die-casting machine, and relates to the field of die-casting equipment. The double-layer pressure chamber comprises an inner-layer structure and an outer-layer structure, and the inner-layer structure and the outer-layer structure are both hollow structures. A water channel and an oil channel are arranged on the outer wall of the inner-layer structure, the oil channel is close to a pouring port of the double-layer pressure chamber, when the pouring port faces upwards, the oil channel is located on the outer wall of the lower half part of the inner-layer structure, and the water channel is far away from the pouring port; the end face, close to the pouring port, of the inner-layer structure is of an outer flange structure, the outer flange structure is provided with a through hole and a positioning pin, the end face, close to the pouring port, of the outer-layer structure is provided with a guide hole corresponding to the positioning pin, and when the positioning pin is inserted into the guide hole, the outer-layer structure is fixedly connected outside the inner-layer structure in a sleeving mode. According to the double-layer pressure chamber and the die-casting machine, the oil channel is arranged between the inner layer and the outer layer of the pressure chamber to heat one end of the pouring port of the pressure chamber, and the water channel is used for cooling to cool one end, fixed with the die, of the pressure chamber, so that the working efficiency of the die-casting machine is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of die casting equipment, in particular to a double-layer pressure chamber and a die casting machine. BACKGROUND

[0002] In the operation process of the die casting machine, one end of the pressure chamber is usually inserted into the mold and fixed, and the other end is suspended and provided with a pouring opening through which the molten metal can enter the pressure chamber and then be pushed by the punch of the die casting machine to flow through the pressure chamber and be injected into the mold of the die casting machine. Since the mold part is usually preheated by a mold temperature machine, the end of the pressure chamber connected with the mold is also heated. After the die casting machine works for a long time, the temperature of the end of the pressure chamber connected with the mold gradually rises. Due to the effect of thermal expansion and contraction, the heated pressure chamber expands, so that the size of the inner wall of the pressure chamber decreases, while the punch expands due to heating, so that the size of the punch increases, resulting in a decrease in the gap between the pressure chamber and the punch. This aggravates the friction of the punch on the pressure chamber during the advancing and retreating process. Finally, it leads to the wear of the inner wall of the pressure chamber. If the wear is serious, the pressure chamber needs to be replaced as a whole, thereby increasing the use cost of the pressure chamber.

[0003] In the prior art, a cooling water tank is usually arranged outside the pressure chamber to cool the pressure chamber of the die casting machine.

[0004] However, the conventional method usually cools the entire pressure chamber through the cooling water tank, which not only reduces the working efficiency of the die casting machine, but also increases unnecessary energy consumption. CONTENT OF THE INVENTION

[0005] The present application provides a double-layer pressure chamber and a die casting machine, which heats one end of the pouring opening of the pressure chamber by arranging an oil channel between the inner layer and the outer layer of the pressure chamber, and cools the end of the pressure chamber fixed with the mold by arranging a water channel for cooling, thereby improving the working efficiency of the die casting machine and reducing unnecessary energy consumption.

[0006] The first aspect of the embodiment of the present application provides a double-layer pressure chamber, comprising:

[0007] The inner layer structure and the outer layer structure are both hollow structures;

[0008] The outer wall of the inner layer structure is provided with a water channel and an oil channel, the oil channel is close to the pouring opening of the double-layer pressure chamber, and when the pouring opening is upward, the oil channel is located on the lower half of the outer wall of the inner layer structure, and the water channel is away from the pouring opening;

[0009] The outer layer structure is provided with a fixing structure of the die casting mold;

[0010] The end face of the inner layer structure close to the pouring opening is an outer flange structure, the outer flange structure is provided with a through hole and a positioning pin, the end face of the outer layer structure close to the pouring opening is provided with a bolt hole corresponding to the through hole and a guide hole corresponding to the positioning pin, and the outer layer structure is fixedly sleeved outside the inner layer structure when the positioning pin is inserted into the guide hole.

[0011] In a possible design, the water channel includes: a first water channel distributed along the outer wall of the inner layer structure, and a second water channel distributed along the axis of the inner layer structure, the second water channel is used for connecting adjacent first water channels, the flow directions of the adjacent first water channels are opposite, and the difference between the length of the first water channel and the length of the second water channel is greater than or equal to a preset threshold.

[0012] In a possible design, the starting position of the first water channel and the ending position of the first water channel correspond to two points on the same circumference of the outer wall of the inner layer structure, and the angle between the two points is between 330° and 345°.

[0013] In a possible design, when the pouring opening is upward, the water inlet and the water outlet of the water channel are located at the bottom of the double-layer compression chamber.

[0014] In a possible design, the depth of the water channel is 10 mm, and the width of the water channel is 45 mm.

[0015] In a possible design, the oil channel includes: a plurality of first oil channels distributed along the axis of the inner layer structure, and a plurality of second oil channels distributed along the outer wall of the inner layer structure, the second oil channels are used for connecting adjacent first oil channels, the flow directions of the adjacent first oil channels are opposite, and the difference between the length of the first oil channel and the length of the second oil channel is greater than or equal to a preset threshold.

[0016] The farthest two oil channels are respectively used as an oil inlet and an oil outlet, and the oil inlet and the oil outlet extend to the end face of the inner layer structure close to the pouring opening.

[0017] In a possible design, the farthest two oil channels correspond to two points on the same circumference of the outer wall of the inner layer structure, and the angle between the two points is between 120° and 150°.

[0018] In a possible design, the depth of the oil channel is 10 mm.

[0019] In a possible design, the positioning pin is a plurality of positioning pins, and the plurality of positioning pins are different in distance from the edge of the outer flange structure.

[0020] The second aspect of the embodiments of the present application provides a die casting machine, including the double-layer compression chamber of the first aspect.

[0021] The double-layer compression chamber and the die casting machine provided by the embodiment of the present application, the double-layer compression chamber comprises: an inner layer structure and an outer layer structure, both of which are hollow structures; a water channel and an oil channel are arranged on the outer wall of the inner layer structure, the oil channel is close to the pouring opening of the double-layer compression chamber, when the pouring opening is upward, the oil channel is located on the lower half of the outer wall of the inner layer structure, and the water channel is far away from the pouring opening; the outer layer structure is provided with a fixing structure of the die casting mold; the end face of the inner layer structure close to the pouring opening is an outer flange structure, a through hole and a positioning pin are arranged on the outer flange structure, a bolt hole corresponding to the through hole is arranged on the end face of the outer layer structure close to the pouring opening, and a guide hole corresponding to the positioning pin is arranged, and when the positioning pin is inserted into the guide hole, the outer layer structure is fixedly sleeved outside the inner layer structure. The following technical effects can be achieved: the end of the double-layer compression chamber far away from the mold is preheated through the oil channel, and the working efficiency of the die casting machine is improved; during the working process of the die casting machine, when the temperature of the end of the pouring opening of the double-layer compression chamber is low, the end is heated through the oil channel, and the working efficiency of the die casting machine is improved; when the temperature of the end of the double-layer compression chamber connected with the mold is higher than the preset temperature due to long-time working of the die casting machine, the end of the double-layer compression chamber is cooled through the water channel, the size change of the double-layer compression chamber and the punch due to the thermal expansion effect is reduced, the friction of the punch to the double-layer compression chamber during the advancing and retreating process is reduced, the wear of the inner wall of the double-layer compression chamber is reduced, and the service life of the double-layer compression chamber is prolonged, the maintenance cost of the double-layer compression chamber and the downtime of the die casting machine are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0023] The drawings herein are incorporated into the specification and form part of the specification, show the embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application.

[0024] Figure 1 The structure diagram of the double-layer compression chamber provided by the embodiment of the present application Figure 1 ;

[0025] Figure 2 The structure diagram of the inner layer structure of the double-layer compression chamber provided by the embodiment of the present application Figure 1 ;

[0026] Figure 3 The structure diagram of the double-layer compression chamber provided by the embodiment of the present application Figure 2 ;

[0027] Figure 4Structure diagram of inner layer structure of double-layer compression chamber provided for the embodiment of the present application Figure 2 ;

[0028] Figure 5 Structure diagram of inner layer structure of double-layer compression chamber provided for the embodiment of the present application Figure 3 ;

[0029] Figure 6 Structure diagram of water channel provided for the embodiment of the present application

[0030] Figure 7 Structure diagram of oil channel provided for the embodiment of the present application

[0031] Figure 8 Structure diagram of double-layer compression chamber provided for the embodiment of the present application Figure 3 ;

[0032] Figure 9 Structure diagram of double-layer compression chamber provided for the embodiment of the present application Figure 4 .

[0033] Explanation of reference signs:

[0034] 100-double-layer compression chamber; 110-inner layer structure; 120-outer layer structure; 130- pouring opening; 140-fixing structure of compression die;

[0035] 111-water channel; 112-oil channel; 113-bolt; 114-outer flange structure; 115-positioning pin; 116-water inlet; 117-water outlet; 118-oil inlet; 119-oil outlet;

[0036] 610-first water channel; 620-second water channel; 710-first oil channel; 720-second oil channel.

[0037] The specific embodiments of the present application have been shown by the above-mentioned drawings, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals represent like elements or similar elements, unless otherwise indicated. The following exemplary embodiments described in the following detailed description are not meant to be limiting of all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the present application as detailed in the appended claims.

[0039] In the present application, "at least one" means one or more, and "multiple" means two or more. The term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c alone can represent: a alone, b alone, c alone, combination of a and b, combination of a and c, combination of b and c, or combination of a, b and c, where a, b, c can be single or multiple. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] The terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] The terms "connected" and "connected" should be broadly understood, for example, the "connected" or "connected" of the circuit structure can mean physical connection, but also means electrical connection or signal connection, for example, it can be directly connected, that is, physically connected, or indirectly connected through at least one element in the middle, as long as the circuit is connected, it can also be the internal connection of two elements; In addition to signal connection through the circuit, signal connection through media medium, such as radio waves, can also be referred to. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] It should be noted that "at the time" in the embodiments of the present application can be at the moment when a certain condition occurs, or within a certain period of time after a certain condition occurs, and the embodiments of the present application do not make specific limitations.

[0043] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0044] First, the terms involved in the present application are explained:

[0045] Mold temperature controller: refers to a mold temperature controller, which is a device for accurately controlling the temperature of a mold. In the process of die casting, by keeping the mold within the appropriate working temperature range, the mold temperature controller can significantly improve product quality, production efficiency, and prolong the service life of the mold.

[0046] In order to clearly understand the technical solutions of the present application, the prior art solutions will be introduced in detail first.

[0047] The pressure chamber of the die casting machine is an indispensable part of the die casting process, and its service life directly affects the cost of die casting parts. During the operation of the die casting machine, one end of the pressure chamber is fixedly embedded in the mold, and the other end is kept in a suspended state and is equipped with a pouring port so that the metal liquid can enter the pressure chamber, and then be pushed by the punch of the die casting machine, flow through the pressure chamber and finally be injected into the mold cavity. The mold part is usually preheated by a mold temperature controller, and during this process, the end of the pressure chamber connected to the mold is also preheated accordingly.

[0048] As the die casting machine continues to operate, the temperature of the end of the pressure chamber connected to the mold gradually rises. Due to the thermal expansion and contraction effect, the heated expansion of the pressure chamber causes the inner wall size to decrease, while the punch also expands due to heating and the size increases. This size change causes the gap between the pressure chamber and the punch to continuously decrease, which in turn generates friction during the advancement and retreat of the punch. Over time, this continuous friction causes the inner wall of the pressure chamber to gradually wear, and in severe cases, the entire pressure chamber needs to be replaced, increasing the maintenance cost of the pressure chamber and the downtime of the die casting machine.

[0049] To address this problem, the prior art generally uses a cooling water tank arranged outside the pressure chamber to cool the pressure chamber. However, since the end of the pouring port of the pressure chamber does not directly contact the mold, it is difficult to heat up, and its temperature is already relatively low when it is working, and it does not need to be cooled by the cooling water tank. Therefore, even if the mold has been preheated before formal production, the pouring port is usually still at a relatively low temperature. The traditional method is to uniformly cool the entire pressure chamber, which not only reduces the working efficiency of the die casting machine, but also causes unnecessary energy waste.

[0050] In addition, when the metal liquid first enters the pouring port, it usually needs to be poured several times to bring the end of the pressure chamber to the normal working temperature, thereby increasing the hot die times of the pressure chamber.

[0051] Based on this, the embodiment of the present application provides a double-layer compression chamber and a die casting machine, which can be used in the field of die casting equipment, and aims to solve the above technical problems of the prior art. By setting an oil channel between the inner layer and the outer layer of the compression chamber, one end of the pouring opening of the compression chamber is heated, and a water channel for cooling is used to cool the end of the compression chamber fixed to the mold when the temperature is too high, thereby improving the working efficiency of the die casting machine and reducing unnecessary energy waste.

[0052] In order to facilitate the understanding of the technical solutions of the present application, the embodiments of the present application are introduced below in combination with the drawings of the specification.

[0053] Figure 1 The structure diagram of the double-layer compression chamber provided by the embodiment of the present application Figure 1 , Figure 1 The cross-sectional view of the double-layer compression chamber. As shown in Figure 2 , the double-layer compression chamber 100 includes an inner layer structure 110 and an outer layer structure 120, both of which are hollow structures. The outer layer structure 120 is provided with a fixed structure 140 of a die casting mold. The outer layer structure 120 is fixedly sleeved outside the inner layer structure 110. One end of the double-layer compression chamber 100 also has a pouring opening 130. Metal liquid (such as aluminum liquid) can be added to the double-layer compression chamber 100 from the pouring opening 130.

[0054] Figure 1 The structure diagram of the inner layer structure of the double-layer compression chamber provided by the embodiment of the present application Figure 2 . Figure 2 The bottom view of the inner layer structure when the pouring opening 130 is upward. As shown in Figure 3 , the outer wall of the inner layer structure 110 is provided with a water channel 111 and an oil channel 112. The oil channel 112 is close to the pouring opening 130 of the double-layer compression chamber 100, and when the pouring opening 130 is upward, the oil channel 112 is located on the lower half of the outer wall of the inner layer structure 110. The water channel 111 is away from the pouring opening 130. By setting the oil channel 112 in the lower half of the inner layer structure 110, the heating process of the double-layer compression chamber 100 and the metal liquid is more efficient.

[0055] The oil channel 112 can be used to preheat one end of the pouring opening 130 of the double-layer compression chamber 100, and can be used to heat the metal liquid after the metal liquid is poured into the double-layer compression chamber 100 from the pouring opening 130. Since the boiling point of oil is higher, it can have a higher temperature, so it is more suitable for rapid heating of the double-layer compression chamber 100.

[0056] The water channel 111 is used to cool the end of the double-layer compression chamber 100 away from the pouring opening 130. Using water as the cooling liquid can reduce the production cost.

[0057] Specifically, waterway 111 and oilway 112 can be grooves dug into the outer wall of inner structure 110, or they can be pre-installed pipes; no specific restrictions are imposed here.

[0058] In the embodiments shown in the accompanying drawings of this application, the grooves dug out on the outer wall of the inner structure 110 are used as water channels 111 and oil channels 112, but this is not intended to limit the specific implementation of water channels 111 and oil channels 112.

[0059] By setting heating oil channels 112 and cooling water channels 111 on the outer wall of the inner layer structure 110, the technical difficulty of processing can be reduced and the processing can be made easier compared to setting oil channels and water channels on the inner wall of the outer layer structure 120.

[0060] The end face of the inner layer structure 110 near the discharge port 130 is an outer flange structure 114. The outer flange structure 114 is provided with a through hole and a positioning pin 115. The end face of the outer layer structure 120 near the discharge port 130 is provided with bolt holes corresponding to the through holes and guide holes corresponding to the positioning pins 115. When the positioning pins 115 are inserted into the guide holes, the outer layer structure 120 is fixedly sleeved on the outside of the inner layer structure 110.

[0061] Figure 2 A schematic diagram of the double-layered pressure chamber provided in the embodiments of this application. Figure 3 . Figure 3 The diagram shows a top view of the double-layered pressure chamber with the discharge port 130 facing upwards. Figure 4 As shown, the discharge port 130 is located at one end of the double-layer pressure chamber 100 away from the fixed structure 140 of the die-casting mold.

[0062] Figure 2 A schematic diagram of the inner layer structure of the double-layered pressure chamber provided in the embodiments of this application. Figure 4 . Figure 4 A top view of the inner structure 110 is shown with the discharge port 130 facing upwards. (See diagram below.) Figure 4 As shown, waterway 111 is away from discharge port 130. Since oilway 112 is located on the outer wall of the lower half of the inner structure 110 when discharge port 130 is facing upwards, therefore, in Figure 5 In the middle, the discharge port 130 can be seen, but the oil passage 112 is not visible.

[0063] Specifically, the working process of the double-layer compression chamber 100 can be as follows: before the metal liquid is added into the double-layer compression chamber 100 from the pouring opening, the mold temperature machine preheats the mold of the die casting machine, and at the same time, the oil channel 112 is used to heat the end of the double-layer compression chamber 100 away from the mold, that is, the double-layer compression chamber 100 is synchronously preheated, so as to improve the working efficiency of the die casting machine. After the double-layer compression chamber 100 and the mold are preheated, the metal liquid is added into the double-layer compression chamber 100 from the pouring opening, and the die casting machine normally works. In addition, during the working process of the die casting machine, when the temperature of the end of the pouring opening of the double-layer compression chamber 100 is relatively low, the oil channel 112 can be used to heat the end, so as to improve the working efficiency of the die casting machine. After the die casting machine works for a long time, the temperature of the end of the double-layer compression chamber 100 connected with the mold is higher than the preset temperature, and then the water channel 111 can be used to cool the end of the double-layer compression chamber 100, so as to reduce the size change of the double-layer compression chamber and the punch due to the thermal expansion effect, thereby reducing the friction of the punch to the double-layer compression chamber 100 during the advancing and retreating process, reducing the wear of the inner wall of the double-layer compression chamber 100, prolonging the service life of the double-layer compression chamber 100, reducing the maintenance cost of the double-layer compression chamber 100 and the downtime of the die casting machine.

[0064] The double-layer compression chamber provided by the embodiment comprises an inner layer structure and an outer layer structure, and the inner layer structure and the outer layer structure are both hollow structures; the outer wall of the inner layer structure is provided with a water channel and an oil channel, the oil channel is close to the pouring opening of the double-layer compression chamber, the oil channel is located on the lower half of the outer wall of the inner layer structure when the pouring opening faces upward, and the water channel is away from the pouring opening; the outer layer structure is provided with a fixing structure of a die casting mold; the end face of the inner layer structure close to the pouring opening is an outer flange structure, the outer flange structure is provided with a through hole and a positioning pin, the end face of the outer layer structure close to the pouring opening is provided with a bolt hole corresponding to the through hole and a guide hole corresponding to the positioning pin, and the outer layer structure is fixedly sleeved on the outer layer structure when the positioning pin is inserted into the guide hole.

[0065] The following technical effects can be achieved: the end of the double-layer compression chamber away from the mold is preheated through the oil channel, the working efficiency of the die casting machine is improved; during the working process of the die casting machine, when the temperature of the end of the pouring opening of the double-layer compression chamber is relatively low, the end is heated through the oil channel, the working efficiency of the die casting machine is improved; when the die casting machine works for a long time, the temperature of the end of the double-layer compression chamber connected with the mold is higher than the preset temperature, and then the end of the double-layer compression chamber is cooled through the water channel, the size change of the double-layer compression chamber and the punch due to the thermal expansion effect is reduced, thereby the friction of the punch to the double-layer compression chamber during the advancing and retreating process is reduced, the wear of the inner wall of the double-layer compression chamber is reduced, the service life of the double-layer compression chamber is prolonged, the maintenance cost of the double-layer compression chamber is reduced, and the downtime of the die casting machine is reduced.

[0066] The specific structure of the water channel 111 and the oil channel 112 will be described in detail below.

[0067] Figure 3 Structure diagram of the inner layer structure of the double-layer compression chamber provided by the embodiment of the present application Figure 5 . Figure 5 The perspective view of the inner layer structure 110. As shown in Figure 6 , the water channel 111 includes: the first water channel 610 distributed along the outer wall circumference of the inner layer structure 110.

[0068] Figure 6 The structure diagram of the water channel provided by the embodiment of the present application, as shown in Figure 6 , the water channel 111 includes: the first water channel 610 distributed along the outer wall circumference of the inner layer structure 110, and the second water channel 620 distributed along the axial direction of the inner layer structure 110, the second water channel 620 is used to connect adjacent first water channels 610.

[0069] Figure 6 The arrows in the figure are used to indicate the direction of the cooling water flow in the first water channel 610 and the second water channel 620. As shown by the arrows in Figure 2 , in adjacent first water channels 610, the flow direction of the cooling water is opposite, and the difference between the length of the first water channel 610 and the length of the second water channel 620 is greater than or equal to a preset threshold value.

[0070] Specifically, the length of the first water channel 610 is usually much greater than the length of the second water channel 620. In order to facilitate the arrangement of longer water channels 111 at the end of the inner layer structure 110 close to the mold, so as to facilitate more effective cooling of the double-layer compression chamber 100 through the water channel 111.

[0071] Further, the angle corresponding to the two points on the same circumference of the outer wall of the inner layer structure 110 at which the starting position of the first water channel 610 and the ending position of the first water channel 610 are located is between 330° and 345°.

[0072] Specifically, the water channels 111 away from the pouring opening 130 are distributed in a ring shape, and multiple groups of water channels 111 can be uniformly distributed, connected end to end, and the ring rotation angle of the first water channel 610 is maximized at 345° and minimized at 330°, which can be approximately a circular ring structure, so as to effectively cool the end of the double-layer compression chamber 100 close to the mold.

[0073] Further, as shown in Figure 6 and Figure 7 , when the pouring opening 130 is upward, the water inlet 116 and the water outlet 117 of the water channel 111 are located at the bottom of the double-layer compression chamber 100.

[0074] Specifically, the water inlet 116 and the water outlet 117 are arranged at the bottom of the double-layer compression chamber 100. By inputting cooling water from the bottom of the double-layer compression chamber 100 and circulating the cooling water through the entire water channel 111, the cooling water can flow naturally under the action of gravity, cover the entire water channel 111, and cool the double-layer compression chamber 100 more uniformly. Thus, the temperature in the double-layer compression chamber 100 can be lowered more uniformly, and the risk of local overcooling or overheating of the double-layer compression chamber 100 can be avoided. The double-layer compression chamber can be effectively managed and cooled, and the double-layer compression chamber can be kept operating at an appropriate temperature, thereby prolonging the service life of the double-layer compression chamber. Moreover, the water inlet 116 and the water outlet 117 arranged at the bottom of the double-layer compression chamber 100 can facilitate sealing treatment, thereby reducing the risk of cooling water leakage and improving the reliability and safety of the double-layer compression chamber. In addition, the water inlet 116 and the water outlet 117 arranged at the bottom of the double-layer compression chamber 100 facilitate drainage and cleaning of the water channel 111. When the water channel 111 is repaired or cleaned, the residual liquid in the cooling water channel can be easily emptied, and the operator can easily perform regular inspection and maintenance, thereby improving the maintenance efficiency.

[0075] In one possible implementation, the depth of the water channel is 10 mm, and the width of the water channel is 45 mm.

[0076] Specifically, the size of the water channel 111 directly affects the flow characteristics of the cooling water. The water channel with a large width (45 mm) can increase the contact area between the cooling water and the double-layer compression chamber, reduce the flow resistance, and improve the flow efficiency of the cooling water, thereby improving the heat exchange efficiency, allowing heat to be quickly transferred from the double-layer compression chamber to the cooling water, and helping to quickly reduce the temperature of the double-layer compression chamber. The water channel with a moderate depth (10 mm) can maintain a reasonable flow rate while ensuring sufficient flow in the water channel 111. This can avoid insufficient heat exchange caused by a too low flow rate and prevent pressure loss and system wear caused by a too high flow rate. Moreover, the relatively shallow depth of 10 mm can reduce the impact on the structural strength of the double-layer compression chamber and reduce the potential damage caused by the weakening of the double-layer compression chamber structure by the water channel.

[0077] Figure 7 The structure of the oil channel provided in the embodiments of the present application is shown in FIG. 7. Figure 7 As shown in FIG. 7, the oil channel 112 includes a plurality of first oil channels 710 distributed along the axial direction of the inner layer structure 110, and a plurality of second oil channels 720 distributed along the circumference of the outer wall of the inner layer structure 110, the second oil channels 720 being used to connect adjacent first oil channels 710.

[0078] Figure 7 The arrows in FIG. 7 are used to indicate the direction of oil flow in the first oil channels 710 and the second oil channels 720. Figure 8As shown by the middle arrow, the oil flows in opposite directions in adjacent first oil passages 710, and the difference between the length of the first oil passage 710 and the length of the second oil passage 720 is greater than or equal to a preset threshold.

[0079] Specifically, the length of the first oil passage 710 is usually much greater than the length of the second oil passage 720. This is so that a longer oil passage 112 can be arranged at the end of the inner structure 110 near the discharge port, thereby facilitating more effective heating of the double-layer pressure chamber 100 through the oil passage 112.

[0080] Figure 3 A schematic diagram of the double-layered pressure chamber provided in the embodiments of this application. Figure 8 ,like Figure 8 As shown, Figure 4 for Figure 8 Left view of the double-layered pressure chamber. That is, the view of the double-layered pressure chamber observed from the discharge port end of the 100mm double-layered pressure chamber. (Example) Figure 8 As shown, one end of each of the two oil passages 112 that are furthest apart serves as an oil inlet 118 and an oil outlet 119, respectively, and the oil inlet 118 and the oil outlet 119 extend to the end face of the inner layer structure 110 near the discharge port 130.

[0081] Furthermore, such as Figure 9 As shown, the angles between the two points on the same circumference of the outer wall of the inner structure 110 for the two oil passages 112 that are furthest apart are between 120° and 150°.

[0082] Furthermore, the oil passage has a depth of 10 mm and a width of 25 mm to 45 mm. This ensures sufficient flow in the oil passage 112 while maintaining a reasonable flow rate. This avoids insufficient heat exchange due to excessively low flow rate, and also prevents pressure loss and wear of the internal structure caused by excessively high flow rate.

[0083] Figure 4 A schematic diagram of the double-layered pressure chamber provided in the embodiments of this application. Figure 9 ,like Figure 9 As shown, Figure 4 for Figure 9 Right view of the double-layer pressure chamber. That is, the view of the double-layer pressure chamber 100 as seen from the end connected to the die-casting mold. (Example) Figure 9 As shown, there can be multiple locating pins 115, and the distances between the multiple locating pins 115 and the edge of the outer flange structure 114 are different. Figure 2Two positioning pins 115 are shown schematically, in which the left positioning pin 115 is far away from the edge of the outer flange structure 114, and the right positioning pin 115 is close to the edge of the outer flange structure 114, so that through the two positioning pins 115 with different distances from the edge of the outer flange structure 114, the inner layer structure 110 and the outer layer structure 120 can be avoided to be installed in wrong positions. In addition, the number of positioning pins 115 can be multiple, which is not specifically limited here.

[0084] Further, as shown in Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 8 , the through holes on the outer flange structure 114 and the bolt holes on the outer layer structure 120 can be connected by multiple bolts 113, so as to fix the inner layer structure 110 and the outer layer structure 120 together. In Figure 9 and ​ , the number of bolts 113 is six, which is only an example, and in other possible implementations, the specific number of bolts can also be more or less.

[0085] Further, the embodiment of the present application also provides a die casting machine. The die casting machine comprises the double-layer pressure chamber in the above-mentioned embodiment.

[0086] Those skilled in the art will readily understand that other embodiments of the present application can be made without departing from the scope of the application, which is defined by the following claims. The embodiments described above are intended to be merely exemplary and the true scope and spirit of the application are indicated by the following claims.

[0087] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A double-pressing chamber, characterized by, The double-layer pressing chamber comprises: an inner layer structure and an outer layer structure, both of which are hollow structures; an oil channel and a water channel are arranged on the outer wall of the inner layer structure, the oil channel is close to the pouring opening of the double-layer pressing chamber, when the pouring opening is upward, the oil channel is located on the lower half of the outer wall of the inner layer structure, and the water channel is away from the pouring opening; the outer layer structure is provided with a fixing structure of a die casting mold; the end face of the inner layer structure close to the pouring opening is an outer flange structure, the outer flange structure is provided with a through hole and a positioning pin, the end face of the outer layer structure close to the pouring opening is provided with a bolt hole corresponding to the through hole and a guide hole corresponding to the positioning pin, and when the positioning pin is inserted into the guide hole, the outer layer structure is fixedly sleeved outside the inner layer structure.

2. The double laminate chamber of claim 1, wherein, The water channel comprises a first water channel distributed along the outer wall circumference of the inner layer structure and a second water channel distributed along the axial direction of the inner layer structure, the second water channel is used for connecting adjacent first water channels, the flow directions of adjacent first water channels are opposite, and the difference between the length of the first water channel and the length of the second water channel is greater than or equal to a preset threshold.

3. The double laminate chamber of claim 2, wherein, The starting position of the first water channel and the ending position of the first water channel correspond to two points on the same circumference of the outer wall of the inner layer structure, and the angle between the two points is between 330° and 345°.

4. The double laminate chamber of claim 2, wherein, When the pouring opening is upward, the water inlet and the water outlet of the water channel are located at the bottom of the double-layer pressing chamber.

5. The double laminate chamber of claim 2, wherein, The depth of the water channel is 10 mm, and the width of the water channel is 45 mm.

6. The double-layered compression chamber according to any one of claims 1 to 5, characterized in that, The oil channel comprises a plurality of first oil channels distributed along the axial direction of the inner layer structure and a plurality of second oil channels distributed along the outer wall circumference of the inner layer structure, the second oil channels are used for connecting adjacent first oil channels, the flow directions of adjacent first oil channels are opposite, and the difference between the length of the first oil channel and the length of the second oil channel is greater than or equal to a preset threshold. One end of each of the two farthest oil channels is respectively an oil inlet and an oil outlet, and the oil inlet and the oil outlet extend to the end face of the inner layer structure close to the pouring opening.

7. The double laminate chamber of claim 6, wherein, The starting position of the first oil channel and the ending position of the first oil channel correspond to two points on the same circumference of the outer wall of the inner layer structure, and the angle between the two points is between 120° and 150°.

8. The double laminate chamber of claim 6, wherein, The depth of the oil channel is 10 mm.

9. The double-layered compression chamber according to any one of claims 1 to 5, characterized in that, The positioning pins are a plurality of, and the plurality of positioning pins are different in distance from the edge of the outer flange structure.

10. A die casting machine characterized by comprising: The double-layer pressing chamber comprises the double-layer pressing chamber according to any one of claims 1 to 9.

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