Pitched roof structure and mold

Abstract

The utility model discloses a pitched roof structure and a mold. The angle ejector structure comprises an angle ejector rod and a connecting pipe. A cooling channel and a mounting channel are formed in the angle ejector rod, and the mounting channel extends in the axial direction of the angle ejector rod and communicates with the outside. The connecting pipe is arranged in the mounting channel, a first overflowing channel is defined between the connecting pipe and the angle ejector rod, a second overflowing channel extending in the axial direction of the connecting pipe is arranged in the connecting pipe, and an external cooling medium can flow into the cooling channel through the second overflowing channel and flow out to the outside through the first overflowing channel. The mounting channel is arranged in the angle ejector rod, so that the size of a waterway system is reduced, and the size of the angle ejector structure is reduced. The cooling channel is arranged in the angle ejector rod, so that continuous circulation of a cooling medium can be realized. And the cooling medium can continuously take away heat on the angle ejector rod from the cooling channel, so that the heat of a molded part in the mold is further reduced, and the cooling molding efficiency of the molded part is improved while the thermal deformation of the angle ejector is reduced.

Description

Technical Field

[0001] The present application relates to the field of injection molds, and particularly to a lifter structure and a mold. Background Art

[0002] With the increasing application fields of plastic products, the shapes of products are also changing rapidly. When an injection mold produces a product with a buckle structure, the lifter needs to contact the high-temperature product, and excessive heat accumulation will cause high-temperature deformation on the contact surface of the lifter, resulting in a decrease in the accuracy of the lifter, thereby affecting the forming accuracy of the product. In related technologies, a water channel system is set to cool the lifter, but it is difficult to set a water channel system for the lifter in a narrow working space. Summary of the Utility Model

[0003] In view of this, the embodiments of the present application provide a lifter structure and a mold for solving the above problems in the use of the lifter.

[0004] The first aspect of the present application provides a lifter structure for a mold, and the lifter structure includes:

[0005] A lifter rod, in which a cooling channel and an installation channel are arranged inside the lifter rod, the installation channel extends along the axial direction of the lifter rod, and the installation channel communicates with the outside;

[0006] A connecting pipe, which is arranged in the installation channel and defines a first flow channel with the lifter rod, and a second flow channel extending along the axial direction of the connecting pipe is arranged inside the connecting pipe, and external cooling medium can flow into the cooling channel through the second flow channel and flow out to the outside through the first flow channel.

[0007] In some embodiments, the lifter rod is provided with a plurality of connecting channels, one end of each connecting channel penetrates the surface of the lifter rod, and the other end extends into the lifter rod and communicates with each other to form the cooling channel.

[0008] In some embodiments, the connecting channel includes a first connecting section and a second connecting section that communicate with each other, the first connecting section is located outside the second connecting section, and in a cross-section perpendicular to the axis of the connecting channel, the cross-sectional area of the second connecting section is smaller than that of the first connecting section, and the second connecting sections of each connecting channel communicate with each other to form the cooling channel.

[0009] In some embodiments, the two axial ends of the lifter rod are respectively a connecting end and a forming end, the cooling channel is arranged at the forming end, the side wall of the forming end includes a forming surface and a connecting surface connected to the forming surface, and the forming surface is used to define a workpiece cavity of the workpiece with the mold core of the mold;

[0010] Both the forming surface and the connecting surface are provided with at least two connecting channels parallel to each other. The axis of the connecting channel on the forming surface is perpendicular to the axis of the connecting channel on the connecting surface, and the axis of the connecting channel on the forming surface is parallel to the axis of the installation channel.

[0011] In some embodiments, the installation channel includes a main body section and a connecting section arranged along the axial direction of the lifter rod. In a cross-section perpendicular to the axis of the installation channel, the cross-sectional area of the connecting section is smaller than that of the main body section. The connecting pipe is in sealing fit with the end face of the connecting section close to the main body section. The second flow-through channel communicates with at least one of the second connecting sections, and the main body section communicates with at least one of the remaining second connecting sections.

[0012] In some embodiments, the lifter structure includes a sealing member arranged on the second connecting section and / or the first connecting section for sealing the cooling channel.

[0013] In some embodiments, the lifter structure includes a first joint and a second joint arranged on the lifter rod. The first joint communicates with the first flow-through channel, and the second joint communicates with the second flow-through channel.

[0014] In some embodiments, the lifter structure includes a slider structure connected to the lifter rod. The lifter structure is in limit fit with the mold core of the mold through the slider structure.

[0015] In some embodiments, the lifter rod includes an installation part having a limiting surface. The slider structure includes a slider sleeved on the installation part, a nut, and a gasket. The slider and the gasket are clamped between the nut and the limiting surface.

[0016] In a second aspect of the present application, a mold is provided. The mold includes a mold core and the lifter structure of any one of the above embodiments. The mold core and the lifter structure define a workpiece cavity for forming a workpiece.

[0017] The inclined lifter structure and mold provided by the embodiments of the present application, on the one hand, by arranging an installation channel in the inclined lifter rod, the connecting pipe is arranged in the installation channel, a first flow passage is defined between the connecting pipe and the inclined lifter rod, and a second flow passage is arranged inside the connecting pipe. In this way, the volume of the water circuit system is reduced, which is beneficial to reducing the volume of the inclined lifter structure. On the other hand, by arranging a cooling channel inside the inclined lifter rod, the cooling medium flows into the cooling channel through the second flow passage and then flows out to the outside through the first flow passage. In this way, the continuous circulation of the cooling medium can be realized. The continuously circulating cooling medium can continuously take away the heat on the inclined lifter rod from the cooling channel, further reducing the heat of the molded part in the mold, reducing the thermal deformation of the inclined lifter while also improving the cooling and forming efficiency of the molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the inclined lifter structure and the mold core according to an embodiment of the present application;

[0019] Figure 2 is a schematic structural diagram of the inclined lifter structure according to an embodiment of the present application;

[0020] Figure 3 is a cross-sectional view of the inclined lifter structure according to an embodiment of the present application;

[0021] Figure 4 is Figure 3 an enlarged view of part A in

[0022] Figure 5 is Figure 3 an enlarged view of part B in

[0023] DESCRIPTION OF THE REFERENCE NUMERALS

[0024] 10. Inclined lifter structure; 11. Inclined lifter rod; 111. First flow passage; 112. Cooling channel; 113. Installation channel; 1131. Main body section; 1132. Connection section; 114. Connection channel; 1141. First connection section; 1142. Second connection section; 115. Installation part; 1151. Limiting surface; 116. Connection end; 117. Forming end; 1171. Forming surface; 1172. Connection surface; 12. Connecting pipe; 121. Second flow passage; 13. Sealing member; 14. First joint; 15. Second joint; 16. Slide block structure; 161. Slide block; 1611. Rotating shaft structure; 1612. Limiting block; 162. Nut; 163. Gasket; 20. Mold core. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and are therefore only used as examples, and the protection scope of the present application cannot be limited by this. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0031] The lifter is a structure in the die field that is used to cooperate with the core of the die to form an internal undercut of the product. During the product forming process, the material of the product part flows into the die in a high-temperature molten state and cools and forms under the constraint of the die, releasing a large amount of heat. For other parts of the die, due to their relatively large structure, the contact effect with the external heat-conducting medium, such as air, is good, and the heat transfer effect is good. The lifter has a small volume and is generally arranged inside the cavity of the die. The contact effect with the external heat-conducting medium, such as air, is also not ideal, resulting in heat concentrating on the surface of the lifter in contact with the workpiece and unable to dissipate. In severe cases, the lifter may be deformed, causing damage to the die. At the same time, the part of the workpiece in contact with the lifter cannot dissipate heat as quickly as other parts, resulting in uneven cooling of the workpiece, affecting the forming efficiency and quality of the workpiece. Therefore, a separate cooling system needs to be provided on the lifter to cool the lifter.

[0032] On the one hand, the present application provides a die. Please refer to Figure 1 , the die includes a core 20 and the lifter structure 10 of any embodiment of the present application. The core 20 and the lifter structure 10 define a workpiece cavity for forming a workpiece.

[0033] On the other hand, the present application provides a lifter structure 10 for a die. Please refer to Figures 1 to 5 , the lifter structure 10 includes a lifter rod 11 and a connecting pipe 12. A cooling channel 112 and an installation channel 113 are arranged inside the lifter rod 11. The installation channel 113 extends along the axial direction of the lifter rod 11 and is communicated with the outside. The connecting pipe 12 is arranged in the installation channel 113 and defines a first flow channel 111 with the lifter rod 11. A second flow channel 121 extending along the axial direction of the connecting pipe 12 is arranged inside the connecting pipe 12. The external cooling medium can flow into the cooling channel 112 through the second flow channel 121 and flow out to the outside through the first flow channel 111.

[0034] Generally, the lifter rod 11 is a long bar-shaped structure, and the surface for cooperating with the core 20 is arranged at one end of the lifter rod 11. The long bar-shaped structure facilitates extending the surface for cooperating with the core 20 towards the core 20, which is beneficial to the cooperation between the lifter rod 11 and the core 20. On the other hand, a driving structure can also be arranged on the side away from the core 20 of the long bar-shaped structure to drive the movement of the lifter rod 11 and cooperate to realize the mold closing and mold opening of the die. The length of the lifter rod 11 is not limited here and is specifically determined according to the specific structure of the die and the design of the driving structure. On the premise of not affecting the movement cooperation between the lifter rod 11 and the core 20, the shortest length is selected, which can save the manufacturing material of the lifter.

[0035] The connecting pipe 12 is a hollow pipe for transporting a cooling substance. The material of the connecting pipe 12 is not limited herein, and any material with good thermal conductivity can be used to manufacture the connecting pipe 12, such as copper, aluminum, etc. The cross-sectional size of the connecting pipe 12 is not limited herein, and it is specifically determined according to the design index of the ejector pin cooling effect by calculating the flow rate parameter of the cooling substance.

[0036] The connecting pipe 12 is arranged in the installation channel 113, and the laying path of the connecting pipe 12 is determined according to the shape of the installation channel 113. Here, the installation channel 113 refers to a cavity opened axially along the ejector pin 11 inside the ejector pin 11, and the installation channel 113 communicates with the outside. By arranging the connecting pipe 12 in the installation channel 113, a cavity formed between the outer wall of the connecting pipe 12 and the installation channel 113 can be used for the cooling medium to flow through. This cavity is the first flow channel 111 defined by the installation channel 113 and the connecting pipe 12.

[0037] Here, it should be noted that the installation positions of the connecting pipe 12 and the installation channel 113 directly affect the structure of the first flow channel 111.

[0038] The specific installation positions of the connecting pipe 12 and the installation channel 113 are not limited herein. Generally, the cross-sections of both the connecting pipe 12 and the installation channel 113 are circular, and the central axes of the connecting pipe 12 and the installation channel 113 coincide. In this way, the first flow channel 111 is a regular ring-shaped cavity, which is beneficial to reducing the flow resistance of the cooling medium in the first flow channel 111.

[0039] It can be understood that the connecting pipe 12 is a hollow pipe, and the hollow part inside the connecting pipe 12 can transport the cooling medium. The hollow part inside the connecting pipe 12 is the second flow channel 121. The cooling medium can flow into the cooling channel 112 through the second flow channel 121 and flow out to the outside through the first flow channel 111. That is to say, the second flow channel 121 communicates with the cooling channel 112, and the cooling channel 112 communicates with the first flow channel 111.

[0040] The connection modes of the second overflow channel 121 with the cooling channel 112 and the cooling channel 112 with the first overflow channel 111 are not limited herein. For example, it can be directly connected. For example, at least part of the first overflow channel 111 and the second overflow channel 121 are connected and overlapped with the cooling channel 112 to achieve direct connection, so the structure is simple. Of course, it can also be indirectly connected through a connection structure. For example, by arranging an intermediate transition connection hole inside the lifter pin 11, the indirect connection of the first overflow channel 111 and the second overflow channel 121 with the cooling channel 112 is realized. In this way, when designing the structures of the first overflow channel 111, the second overflow channel 121 and the cooling channel 112, the position matching relationship does not need to be considered too much, and the design is more flexible.

[0041] The cooling channel 112 is another cavity opened inside the lifter pin 11. The cooling substance flows through the cavity to take away the heat transferred from the contact surface between the lifter pin 11 and the workpiece on the cavity wall, for cooling the heat dissipation of the lifter pin 11. Generally speaking, the cooling channel 112 is usually arranged inside the lifter close to the contact surface between the lifter pin 11 and the workpiece, which is beneficial to the heat dissipation of the lifter pin 11.

[0042] It can be understood that the larger the internal area of the cooling channel 112, the larger the area of the lifter pin 11 that the cooling medium can contact, and the more heat the cooling medium can take away when flowing through, and the better the heat dissipation effect.

[0043] The specific structure of the cooling channel 112 is not limited herein, as long as it is beneficial to increase the heat dissipation area with the cooling medium and is beneficial to the flow of the cooling medium.

[0044] In some embodiments, the cooling channel 112 is a round hole opened inside the lifter pin 11, and the internal area of the cooling channel 112 is increased by increasing the aperture, so as to improve the heat dissipation effect.

[0045] In some other embodiments, the internal area of the cooling channel 112 is increased by increasing the number of round holes arranged, so as to improve the heat dissipation effect.

[0046] In still some other embodiments, by arranging a plurality of through round holes to form a loop, in this way, the low-temperature cooling medium can continuously flow through the loop to improve the heat dissipation effect.

[0047] The cooling medium is a liquid substance with a relatively high specific heat capacity. For example, it can be water or oil, etc. In this way, it is beneficial to take away more heat. Since water has the largest specific heat capacity and is cheap, water is generally used as the cooling medium.

[0048] In some embodiments, antifreeze and rust-proof substances are also added to the water to prepare a special coolant to protect the inside of the lifter pin 11.

[0049] The lifter structure 10 provided by the embodiment of the present application, on the one hand, by arranging an installation channel 113 in the lifter rod 11, the connecting pipe 12 is arranged in the installation channel 113, a first flow channel 111 is defined between the connecting pipe 12 and the lifter rod 11, and a second flow channel 121 is arranged inside the connecting pipe 12. In this way, the volume of the waterway system is reduced, which is beneficial to reducing the volume of the lifter structure 10. On the other hand, by arranging a cooling channel 112 inside the lifter rod 11, the cooling medium flows into the cooling channel 112 through the second flow channel 121, and then flows out to the outside through the first flow channel 111. In this way, the continuous circulation of the cooling medium can be realized. The continuously circulating cooling medium can continuously take away the heat on the lifter rod 11 from the cooling channel 112, further reducing the heat of the molded part in the mold, reducing the thermal deformation of the lifter while also improving the cooling and forming efficiency of the molded part.

[0050] In some embodiments, please refer to Figures 2 to 5 , the lifter rod 11 is provided with a plurality of connecting channels 114. One end of each connecting channel 114 penetrates the surface of the lifter rod 11, and the other end extends towards the inside of the lifter rod 11 and communicates with each other to form a cooling channel.

[0051] Since it is difficult to process holes inside the lifter rod 11 and the processing cost is too high. Therefore, a plurality of connecting channels 114 are penetrated and opened from the surface of the lifter rod 11, and the connecting channels 114 extend towards the inside and communicate with each other. In this way, the part of the connecting channels 114 inside the lifter rod 11 can form the cooling channel 112.

[0052] The specific structure and quantity of the connecting channels 114 are not limited here, and are specifically determined according to the design structure of the cooling channel 112. Generally speaking, the connecting channels 114 are holes starting from the surface of the lifter rod 11 towards the inside.

[0053] Here, the communication of the connecting channels 114 means that the structural parts of the connecting channels 114 located inside the lifter rod 11 overlap, so that the cooling medium can flow from one connecting channel 114 to the remaining connecting channels 114 through the overlapping part.

[0054] It can be understood that the longer the length of the extending hole of the connecting channel 114 inside the lifter rod 11, the larger the internal area of the cooling channel 112, and the better the heat dissipation effect of the cooling channel 112.

[0055] The opening positions of the connecting channels 114 are not limited here. For example, they can be opened in the same direction on the same surface of the lifter rod 11, or they can be opened in different directions and cross on different surfaces of the lifter rod 11.

[0056] In some embodiments, a connection channel 114 is formed on the top surface of the lifter rod 11, and at the same time, a connection channel 114 is formed on the side surface of the lifter rod 11 adjacent to the top surface. The connection channel 114 formed on the side surface is perpendicular to and intersects with the connection channel 114 formed on the top surface.

[0057] By forming the connection channel 114 through the surface of the lifter rod 11, the complex internal machining of the workpiece is transformed into a simple machining from the outside to the inside of the workpiece, reducing the machining difficulty and the production cost.

[0058] In some embodiments, refer to Figures 2 to 5 , the connection channel 114 includes a first connection segment 1141 and a second connection segment 1142 that are interconnected. The first connection segment 1141 is located on the outer side of the second connection segment 1142. In a cross-section perpendicular to the axis of the connection channel 114, the cross-sectional area of the second connection segment 1142 is smaller than the cross-sectional area of the first connection segment 1141. The second connection segments 1142 of the respective connection channels 114 are interconnected to form a cooling channel 112.

[0059] When forming the connection channel 114 by hole machining, a drill bit is generally used. Since the surface of the lifter rod 11 is not necessarily a flat surface, the axis of the connection channel 114 is not necessarily perpendicular to the surface of the lifter rod 11, and when forming the connection channel 114 by hole machining, in order to increase the internal area of the cooling channel 112, the hole is a deep hole. For deep hole machining, if the drill bit cannot be perpendicular to the machining plane, it will cause uneven force on the drill bit and lead to the breakage of the drill bit. Therefore, it is necessary to machine a process hole with a relatively large cross-sectional area and a relatively shallow hole depth before machining the deep hole. Since the process hole has a relatively shallow hole depth and a relatively large hole diameter, the drill bit can be allowed to be inclined to the machining surface to a certain extent. Thus, after the process hole is machined, a deep hole with a relatively large hole diameter can be started perpendicular to the bottom surface of the process hole at the bottom surface of the process hole.

[0060] Here, the first connection segment 1141 refers to the process hole that is machined first during the process of machining the connection channel 114, and the second connection segment 1142 refers to the deep hole machined on the basis of the process hole after the process hole is machined. Here, it should be noted that the first connection segment 1141, that is, the process hole, is only set for the convenience of machining in actual machining and has no influence on the functional structure. That is to say, the second connection segment 1142 is the main structure for realizing the structural function and forming the cooling channel 112.

[0061] The sizes of the cross-sectional areas of the first connection segment 1141 and the second connection segment 1142 are not limited here, as long as the cross-sectional area of the second connection segment 1142 is smaller than the cross-sectional area of the first connection segment 1141. Generally, the cross-sectional area of the first connection segment 1141 is slightly larger than the cross-sectional area of the second connection segment 1142, and it does not affect the movement of the drill bit for machining the second connection segment 1142.

[0062] By providing the first connecting section 1141 and the second connecting section 1142, the cross-sectional area of the first connecting section 1141 is slightly larger than that of the second connecting section 1142. In this way, the first connecting section 1141 serves as a process hole, providing a flat surface for the machining of the second connecting section 1142, and enabling the drill bit for machining the second connecting section 1142 to be perpendicular to the machining surface. This is beneficial to the machining of the connecting channel 114, reduces the machining difficulty, and decreases the machining cost.

[0063] In some embodiments, referring to Figures 1 to 5 , the two axial ends of the lifter 11 are respectively a connecting end 116 and a forming end 117. The cooling channel 112 is arranged at the forming end 117. The side wall of the forming end 117 includes a forming surface 1171 and a connecting surface 1172 connected to the forming surface 1171. The forming surface 1171 is used to define a workpiece cavity for the workpiece with the mold core 20 of the mold. At least two mutually parallel connecting channels 114 are provided on both the forming surface 1171 and the connecting surface 1172. The axis of the connecting channel 114 on the forming surface 1171 is perpendicular to the axis of the connecting channel 114 on the connecting surface 1172, and the axis of the connecting channel 114 on the forming surface 1171 is parallel to the axis of the installation channel 113.

[0064] The forming end 117 is the end of the lifter 11 close to the mold core 20 along the axis, and the connecting end is the end away from the mold core 20 along the axis.

[0065] The forming surface 1171 is the surface that defines a workpiece cavity for the workpiece with the mold core 20. This surface can be either the top surface or the side surface of the lifter 11. Of course, it can also be the combined surface of the top surface and the side surface that cooperates with the mold core 20 to form the cavity surface of the workpiece. In this embodiment, the forming surface 1171 of the lifter 11 refers to the top surface of the lifter 11. The surface shape of the forming surface 1171 is not limited herein and is determined by the specific structure of the workpiece.

[0066] The connecting surface 1172 is any surface connected to the forming surface 1171 and is not limited herein.

[0067] Referring to Figure 2 , here, at least two mutually parallel connecting channels 114 are provided on both the forming surface 1171 and the connecting surface 1172. The axis of the connecting channel 114 on the forming surface 1171 is perpendicular to the axis of the connecting channel 114 on the connecting surface 1172. That is to say, the connecting channels 114 on the forming surface 1171 and the connecting surface 1172 intersect perpendicularly to form at least one rectangular loop, and the cooling medium can flow in this rectangular loop.

[0068] The axis of the connecting channel 114 of the forming surface 1171 is parallel to the axis of the installation channel 113. That is to say, the rectangular loop formed by the connecting channel 114 is also parallel to the axis of the installation channel 113. In this way, the cross-sections of the first flow-through channel 111 and the second flow-through channel 121 are also parallel to the rectangular loop, which is conducive to the connection between the first flow-through channel 111 and the second flow-through channel 121 and the cooling channel 112.

[0069] By providing at least two mutually parallel connecting channels 114 on both the forming surface 1171 and the connecting surface 1172, the axis of the connecting channel 114 of the forming surface 1171 is perpendicular to the axis of the connecting channel 114 of the connecting surface 1172, so that the connecting channels 114 intersect perpendicularly to form at least one rectangular loop. By changing the number of connecting channels 114 provided on each plane, multiple rectangular loops can be set to increase the internal area of the cooling channel 112 and improve the heat dissipation effect. The structure is simple and is conducive to the processing of the cooling channel 112.

[0070] In some embodiments, please refer to Figures 2 to 5 , the installation channel 113 includes a main body section 1131 and a connecting section 1132 arranged along the axial direction of the ejector pin 11. In a cross-section perpendicular to the axis of the installation channel 113, the cross-sectional area of the connecting section 1132 is smaller than the cross-sectional area of the main body section 1131. The connecting pipe 12 is in sealing fit with the end face of the connecting section 1132 close to the main body section 1131. The second flow-through channel 121 communicates with at least one second connecting section 1142, and the main body section 1131 communicates with at least one of the remaining second connecting sections 1142.

[0071] The main body section 1131 refers to the structure of the installation channel 113 that accommodates the connecting pipe 12, and the cross-sectional area of the first flow-through channel 111 can be changed by changing the cross-sectional area of the main body section 1131.

[0072] The connecting section 1132 refers to the structure at one end inside the installation channel 113 that is in sealing fit with the connecting pipe 12, and the form of the sealing fit is not limited here.

[0073] In some embodiments, the cross-sectional area of the connecting section 1132 is smaller than the cross-sectional area of the connecting pipe 12. The end face of the connecting pipe 12 abuts against the end face of the connecting section 1132 and is in sealing fit through elements such as sealant or sealing gasket.

[0074] In other embodiments, the connecting pipe 12 extends into the connecting section 1132, and the outer wall of the connecting pipe 12 is in interference fit with the connecting section 1132 to achieve sealing.

[0075] In still other embodiments, the connecting section 1132 protrudes toward the main body section 1131, inserts into the connecting pipe 12, and is in interference fit with the inner wall of the connecting pipe 12 to achieve sealing.

[0076] Here, the second overflow channel 121 communicates with at least one second connection segment 1142, and the main body segment 1131 communicates with at least one of the remaining second connection segments 1142. The form of the connection and cooperation is not limited herein.

[0077] Here, an example is given where the second overflow channel 121 communicates with the second connection segment 1142. For example, it can be a direct connection. For example, the second overflow channel 121 and the second connection segment 1142 are at least partially connected and overlapped to achieve a direct connection, so the structure is simple. Of course, it can also be indirectly connected through a connection structure. For example, by arranging an intermediate transition connection hole inside the ejector pin 11, the indirect connection between the second overflow channel 121 and the second connection segment 1142 is realized. In this way, when designing the structure, the position matching relationship does not need to be considered too much, and the design is more flexible. The form of the connection between the main body segment 1131 and the second connection segment 1142 is similar to the above and will not be elaborated here.

[0078] By arranging the main body segment 1131 and the connection segment 1132, the connecting pipe 12 is arranged inside the main body segment 1131 and communicates with the second connection segment 1142 through the connection segment 1132. In this way, the second overflow channel 121 is connected to the first overflow channel 111 through the cooling channel 112. Thus, the cooling medium can circulate in the order of the second overflow channel 121, the cooling channel 112, and the first overflow channel 111, taking away heat from the ejector pin 11 and realizing continuous heat dissipation of the ejector structure 10. The structure is simple, the processing is convenient, and the manufacturing cost is low.

[0079] In some embodiments, please refer to Figures 2 to 5 , the ejector structure 10 includes a seal 13, and the seal 13 is arranged on the second connection segment 1142 and / or the first connection segment 1141 for sealing the cooling channel 112.

[0080] Since the connection channel 114 is opened from the outer surface of the ejector, the cooling medium flowing through the cooling channel 112 will flow out to the outside of the ejector pin 11 through the connection channel 114, causing pollution of the workpiece and cooling failure. Therefore, after the connection channel 114 is opened, a seal 13 needs to be arranged on the connection channel 114 so that the cooling medium cannot flow out through the connection channel 114.

[0081] The seal 13 can be arranged on the second connection segment 1142 to seal the second connection segment 1142, or can be arranged on the first connection segment 1141 to seal the first connection segment 1141. When hot, the seal 13 can also be arranged between the second connection segment 1142 and the first connection segment 1141 to seal the connection between the first connection segment 1141 and the second connection segment 1142.

[0082] The specific type of the seal 13 is not limited herein. For example, it can be a rubber seal plug, sealant, etc.

[0083] In some embodiments, threads are formed on the side of the second connection section 1142 close to the first connection section 1141, and a sealing screw is used for sealing. In this way, disassembly is convenient, and the cooling channel 112 can be disassembled and repaired.

[0084] By providing a seal 13 on the second connection section 1142 and / or the first connection section 1141, the sealing of the cooling channel 112 is achieved, reducing the possibility of the cooling medium flowing out of the sealed cooling channel 112 and improving the cooling effect.

[0085] In some embodiments, refer to Figures 2 to 5 , the lifter structure 10 includes a first joint 14 and a second joint 15 provided on the lifter rod 11. The first joint 14 communicates with the first flow-through channel 111, and the second joint 15 communicates with the second flow-through channel 121.

[0086] The first connection head and the second connection head are structures provided on the lifter rod 11 for connecting to an external cooling pipeline.

[0087] Taking water as the cooling medium as an example, one end of the first joint 14 communicates with the first flow-through channel 111 and the other end is connected to the return water pipeline of the external cooling pipeline, guiding the high-temperature water in the first flow-through channel 111 into the return water pipeline. One end of the second joint 15 communicates with the second flow-through channel 121 and the other end is connected to the water inlet pipeline of the external cooling pipeline, guiding the low-temperature water in the water inlet pipeline into the second flow-through channel 121.

[0088] In some embodiments, the first connection head and the second connection head can be set as standard pipeline connectors. For example, a three-quarter pipe thread connector is provided on the outer side of the first connection head and the second connection head to facilitate the connection of the cooling pipeline.

[0089] In some embodiments, valves can also be provided on the first joint 14 and the second joint 15 to regulate and control the flow rate of the cooling medium. By providing the first joint 14 and the second joint 15 on the lifter rod 11, it is beneficial to connect the first flow-through channel and the second flow-through channel 121 to an external cooling pipeline, realizing the circulation of the cooling medium inside the lifter rod 11 and ensuring that low-temperature cooling medium continuously flows into the lifter rod 11. At the same time, valves can also be provided on the first joint 14 and the second joint 15 to regulate and control the flow rate of the cooling medium, realizing controllable cooling effect.

[0090] In some embodiments, refer to Figures 2 to 5 , the lifter structure 10 includes a slider structure 16. The slider structure 16 is connected to the lifter rod 11, and the lifter structure 10 is in limit fit with the mold core 20 of the mold through the slider structure 16.

[0091] The slider structure 16 here refers to a motion mechanism provided on the inclined ejector rod 11. The inclined ejector rod 10 is limitedly matched with the mold core 20 of the mold through the slider structure 16. The slider structure 16 cooperates with the mold core 20 of the mold to limit the movement of the inclined ejector rod 11. In this way, the mold closing and opening can be achieved by controlling the movement of the inclined ejector rod 10.

[0092] It should be noted that the slider structure 16 restricts the lift rod 11 including but not limited to linear sliding, and can also restrict rotation in a certain direction. The specific structure of the slider structure 16 is not limited here, and is specifically determined according to the matching situation with the mold, that is, the movement state of mold closing and mold opening.

[0093] In some embodiments, see Figure 2 , Figure 3 and Figure 5 The slider 161 includes a rotating shaft structure 1611 protruding on both sides of the inclined lift rod 11 and fixed to the inclined lift rod 11. The rotating shaft structure 1611 and the inclined lift rod 11 are relatively fixed. A limit block 1612 is respectively sleeved on both sides of the rotating shaft structure 1611, and the limit block 1612 can cooperate with the slide groove. In this way, the inclined lift rod 11 can achieve relative linear motion along the slide rail and the inclined lift rod 11 can rotate around the rotating shaft structure 1611.

[0094] By providing a slider structure 16 connected to the inclined ejector rod 11, the inclined ejector structure 10 and the mold core 20 of the mold are limitedly matched to achieve mold closing and mold opening, and the structure is simple and reliable.

[0095] In some embodiments, see Figures 1 to 5 The inclined ejector rod 11 includes a mounting portion 115 having a limiting surface 1151 , and the slider structure 16 includes a slider 161 , a nut 162 and a gasket 163 which are sleeved on the mounting portion 115 , and the slider 161 and the gasket 163 are sandwiched between the nut 162 and the limiting surface 1151 .

[0096] The mounting portion 115 is a region on one side of the lift rod 11 for mounting the structure of the slider 161 , and a limiting surface 1151 of the mounting portion 115 is a plane perpendicular to the axial direction of the lift rod 11 .

[0097] The form of the limiting surface 1151 formed by the mounting portion 115 is not limited here. For example, it can be an end surface formed by the protrusion of the inclined ejector rod 11 radially outward, or it can be an end surface formed by the mounting portion 115 shrinking radially inward as a whole.

[0098] The slider 161, nut 162 and gasket 163 of the slider structure 16 are all sleeved on the mounting portion 115. The slider 161 and the gasket 163 are clamped between the nut 162 and the limiting surface 1151. Threads adapted to the nut 162 are provided on the mounting portion 115, and the nut 162 can be fixed on the mounting portion 115. At the same time, by tightening the nut 162 and cooperating with the limiting surface 1151, the installation of the slider structure 16 is realized.

[0099] Here, it should be noted that the setting position and quantity of the gasket 163 are not limited herein. For example, it can be arranged between the nut 162 and the slider 161, or between the slider 161 and the limiting surface 1151. Of course, it can also be arranged on both sides of the slider 161, which is specifically determined according to the strength of each structure. The setting of the gasket 163 can increase the contact area of each contact surface and reduce the deformation during the installation of each structure. At the same time, by changing the quantity or the thickness of a single gasket 163, the position of the slider 161 in the axial direction of the lifter rod 11 can be controlled to solve the problem that the lifter structure 10 cannot be accurately limited and matched with the mold core 20 of the mold through the slider structure 16 due to dimensional manufacturing errors.

[0100] By providing the slider structure 16 including the slider 161, nut 162 and gasket 163 of the mounting portion 115, and cooperating with the mounting portion 115 and the limiting surface 1151 of the lifter rod 11, the fixed installation of the slider structure 16 is realized. At the same time, by adjusting the quantity or thickness of the gasket 163, the position of the slider 161 in the axial direction of the lifter rod 11 can be adjusted to solve the problem that the lifter structure 10 cannot be accurately limited and matched with the mold core 20 of the mold through the slider structure 16 due to dimensional manufacturing errors. The structure is simple and convenient for maintenance and adjustment.

[0101] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An inclined top structure for a mold, characterized in that, The inclined ejector structure includes: An inclined ejector rod, inside which there are a cooling channel and an installation channel. The installation channel extends along the axial direction of the inclined ejector rod and is in communication with the outside; the inclined ejector rod is provided with a plurality of connecting channels. One end of each connecting channel penetrates the surface of the inclined ejector rod, and the other end extends into the inclined ejector rod and is in communication to form the cooling channel; A connecting pipe, which is arranged in the installation channel and defines a first flow passage with the inclined ejector rod. Inside the connecting pipe, there is a second flow passage extending along the axial direction of the connecting pipe. The external cooling medium can flow into the cooling channel through the second flow passage and flow out to the outside through the first flow passage.

2. The inclined ejector structure according to claim 1, wherein The connecting channel includes a first connecting section and a second connecting section that are in communication with each other. The first connecting section is located outside the second connecting section. In a cross-section perpendicular to the axis of the connecting channel, the cross-sectional area of the second connecting section is smaller than that of the first connecting section. The second connecting sections of all the connecting channels are in communication to form the cooling channel.

3. The lifter structure according to claim 2, wherein The two axial ends of the inclined ejector rod are respectively a connecting end and a forming end. The cooling channel is arranged at the forming end. The side wall of the forming end includes a forming surface and a connecting surface connected to the forming surface. The forming surface is used to define a workpiece cavity of the workpiece with the mold core of the mold; At least two mutually parallel connecting channels are arranged on both the forming surface and the connecting surface. The axis of the connecting channel on the forming surface is perpendicular to the axis of the connecting channel on the connecting surface, and the axis of the connecting channel on the forming surface is parallel to the axis of the installation channel.

4. The inclined ejector structure according to claim 2, characterized in that, The installation channel includes a main section and a connecting section arranged along the axial direction of the inclined ejector rod. In a cross-section perpendicular to the axis of the installation channel, the cross-sectional area of the connecting section is smaller than that of the main section. The connecting pipe is in sealing fit with the end face of the connecting section close to the main section. The second flow passage is in communication with at least one of the second connecting sections, and the main section is in communication with at least one of the remaining second connecting sections.

5. The lifter structure according to claim 2, wherein The inclined ejector structure includes a sealing member, which is arranged on the second connecting section and / or the first connecting section to seal the cooling channel.

6. The inclined top structure according to claim 1, characterized in that The inclined ejector structure includes a first joint and a second joint arranged on the inclined ejector rod. The first joint is in communication with the first flow passage, and the second joint is in communication with the second flow passage.

7. The inclined lifter structure according to claim 1, wherein The inclined ejector structure includes a slider structure, which is connected to the inclined ejector rod. The inclined ejector structure is in limit fit with the mold core of the mold through the slider structure.

8. The lifter structure according to claim 7, characterized in that, The inclined ejector rod includes an installation part with a limiting surface. The slider structure includes a slider sleeved on the installation part, a nut and a gasket. The slider and the gasket are clamped between the nut and the limiting surface.

9. A mold, characterized in that, The mold includes a mold core and the inclined ejector structure according to any one of claims 1-8. The mold core and the inclined ejector structure define a workpiece cavity of the workpiece.

Images