Pressing structure and using method thereof

Abstract

The invention belongs to the field of powder forming equipment, and particularly relates to a pressing structure and a using method thereof. The pressure bearing assembly is mounted on the mounting shell body; the pressing assembly is mounted on the pressure bearing assembly; the mold assembly is mounted on the pressing assembly; the linkage mold is mounted on the pressing assembly; the demolding assembly is mounted on the mounting shell; and the core rod assembly is mounted on the mounting shell. The demolding assembly adopts a lead screw lifting mechanism to accurately drive the mold assembly to move, rapid and stable demolding is achieved, particularly, the lifting assembly of the core rod assembly is in linkage with the mold assembly in the demolding process, a core rod is separated from a product, friction damage caused by direct separation of the product and the core rod is avoided, the product damage rate is greatly reduced, and the product quality is improved. And the product qualification rate is improved.

Description

Technical Field

[0001] The invention belongs to the field of powder forming equipment, and in particular relates to a pressing structure and a use method thereof. Background Art

[0002] In the field of powder metal processing, traditional pressing equipment has many problems that need to be solved. On the one hand, during the conventional pressing process, the die rises directly, so that the powder is only subjected to short-term pressure, which is prone to expansion and leads to a high defective rate.

[0003] Furthermore, in the demolding process, since the powder product is in a state of being squeezed by the cavity, there is a large friction between the powder product and the core rod. The traditional demolding method often directly forces the product out, which can easily cause damage to the molded product and further reduce the product qualification rate. In addition, the traditional pressing equipment is subjected to a large pulling force during the pressing of powder metal. Once the pressure-bearing capacity is insufficient, it will cause premature damage to equipment components and shorten the service life of the equipment. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a pressing structure to solve the problem that in the conventional pressing process, the mold rises directly, so that the powder is only subjected to a short-term pressure, which is prone to expansion, resulting in a high defective product rate. In the demolding process, since the powder product is in a state of being squeezed by the cavity, there is a large friction between the powder product and the core rod. The traditional demolding method often directly forces the product to be ejected, which can easily cause damage to the molded product and further reduce the product qualification rate. In addition, the traditional pressing equipment is subjected to a large pulling force during the pressing of powdered metal. Once the pressure-bearing capacity is insufficient, it will cause premature damage to equipment components and shorten the service life of the equipment.

[0005] One embodiment of the present invention provides a pressing structure for pressing powdered metal, comprising: Install the housing; A pressure-bearing component, the pressure-bearing component is mounted on the mounting shell; A pressing assembly, the pressing assembly being mounted on the pressure-bearing assembly; a die assembly mounted on the pressing assembly; A linkage die, wherein the linkage die is mounted on the pressing assembly; A demoulding assembly, the demoulding assembly being mounted on the mounting housing; A mandrel assembly, wherein the mandrel assembly is mounted on the mounting housing; Wherein, the pressing assembly comprises an upper pressing assembly and a lower pressing assembly; the upper pressing assembly is mounted on the pressure-bearing assembly, and the lower pressing assembly is mounted on the mounting shell; The pressure-bearing component is used to disperse the pulling force generated during pressing; The linkage mold is used to prevent powder from overflowing the mold during reverse powder filling; The die assembly is used to shape the pressed powder; The demoulding assembly is used to drive the mold assembly to move so as to demould the product; The mandrel assembly is used to move synchronously when the product is demoulded; The mandrel assembly comprises a lifting assembly and a mandrel body, wherein the lifting assembly is mounted on the mounting shell, and the mandrel body is mounted on the output end of the lifting assembly; The pressure-bearing assembly comprises a pressure-bearing frame, an upper pressure-bearing plate, a plurality of guide columns, a lower pressure-bearing plate and a plurality of transverse support columns.

[0006] A pressing structure of the present invention moves the mold assembly to the pressing position through the demoulding assembly, and powder is filled after moving to the pressing position. After filling the powder, the upper pressing assembly is started, the upper pressing assembly is pressed down, and the lower pressing assembly is fixed on the lower pressure plate. During the pressing process, the core rod is used to stabilize the entire equipment. During the pressing process, the linked mold keeps the pressed mold tightly in the mold assembly. Because the mold rises too fast during the pressing process, the powder is only subjected to a short force after pressing. If the mold rises too fast, it will cause the powder to expand (expansion is because it is not blocked by pressure for a long time). The powder pressing time can be controlled by setting the pressing time of the linked mold and the rising time of the upper pressing assembly. When the upper pressing assembly rises to the limit point of the linked mold, the linked mold The mold is driven up together, and the product is demoulded after the mold rises. During the demoulding process, the demoulding component is started, and the demoulding component drives the mold component to move to demould the product. In this process, there is a certain friction between the core rod and the formed powder product (because the powder is blocked by the cavity in the mold assembly, which leads to a large friction between the powder product and the core rod at this time). If it is directly ejected, there is a high probability that the formed product will be damaged. Therefore, the present invention simultaneously starts the lifting component to drive the core rod to move, and the core rod will be ejected together with the product (after ejecting, the powder product is not blocked by the cavity on the mold assembly, so it is easier to demould), and then the product demoulding will be more stable, and the pressure-bearing component will withstand the force generated when pressing the powder during the pressing process.

[0007] In one embodiment, the pressure frame is arranged on the mounting housing; The upper pressure bearing plate is fixedly arranged on the pressure bearing assembly; One end of a plurality of the guide posts is fixedly arranged on a side of the upper pressure plate away from the pressure frame; The lower pressure plate is fixedly arranged on the pressure frame, one end of the guide column away from the upper pressure plate is fixedly arranged on the lower pressure plate, and the lower pressure plate is located below the lower pressure plate; A plurality of the transverse support columns are arranged on the pressure frame; The pressure frame is symmetrically provided with horizontal components, and the horizontal components are symmetrically and detachably mounted on the pressure frame by bolts.

[0008] In one embodiment, the mold assembly is movably disposed on a plurality of the support columns; The mold assembly is provided with a molding cavity.

[0009] In one embodiment, the upper pressing assembly includes a driving member and an upper pressing member; The driving member is mounted on the pressure-bearing assembly; The upper pressing member is installed on the output end of the driving member; The upper pressing piece is provided with an opening which is matched with the size of the core rod.

[0010] In one embodiment, the lower pressing assembly includes a moving assembly and a fixed die; The moving assembly is fixedly arranged on the lower pressure plate; The fixed mold is fixedly arranged on the output end of the moving component; The fixed mold is provided with a pressing chamber, the core rod portion is located in the pressing chamber, and the central axis of the pressing chamber coincides with the central axis of the molding cavity.

[0011] In one embodiment, the linkage mold includes a cylinder, a movable plate and an upper mold; The cylinder is symmetrically arranged on the upper pressing member; The movable plate is movably connected to a plurality of the supporting columns, and one side of the movable plate is fixedly arranged on the output ends of the two cylinders; The upper mold is fixedly arranged on a side of the movable plate away from the cylinder.

[0012] In one embodiment, the demoulding assembly includes a screw lifting mechanism; The screw rod lifting mechanism is installed on the installation housing; The lifting end of the screw lifting mechanism is fixed to the mold assembly.

[0013] In one embodiment, the core rod body is partially located in the pressing chamber.

[0014] In one embodiment, during pressing, the pressing chamber and the upper pressing member are located in the forming cavity.

[0015] One embodiment of the present invention provides a method for using a pressing structure, comprising: A pressing structure as described in any one of the above embodiments, and Steps for using the pressed structure: Move the mold assembly to the pressing position through the demoulding assembly, fill powder after moving to the pressing position, start the upper pressing assembly after filling powder, press down the upper pressing assembly, fix the lower pressing assembly on the lower pressure plate, stabilize the entire equipment through the core rod during the pressing process, keep the pressed mold close to the mold assembly during the pressing process, retract the linked mold after the upper pressing assembly rises for a period of time, and then demould the product. Start the demoulding assembly during the demoulding process, and the demoulding assembly drives the mold assembly to move to demould the product. At the same time, start the lifting assembly to drive the core rod to move, and the core rod will be ejected with the product.

[0016] The pressing structure provided by the above technical solution has the following beneficial effects: 1. The demoulding component adopts a screw lifting mechanism to accurately drive the mold component to move, achieving fast and smooth demoulding. In particular, the lifting component of the core rod assembly is linked with the mold assembly during the demoulding process, so that the core rod is ejected together with the product, avoiding friction damage caused by direct separation of the product and the core rod, greatly reducing the product damage rate and improving the product qualification rate.

[0017] 2. Through the controllable linkage mold, the pressing time and the coordination with the rising time of the upper pressing component can be accurately set, which effectively solves the problem of powder expansion due to short pressing time and insufficient force, and significantly reduces the defective rate. The linkage mold is always close to the mold component during the pressing process to ensure that the powder is formed under sufficient pressure, improve product quality and stability, and reduce raw material waste.

[0018] 3. The pressure frame, upper pressure plate, lower pressure plate and transverse support column work together to effectively disperse the pulling force generated during pressing, greatly improving the pressure-bearing capacity of the pressing equipment. The pressure frame not only bears the pulling force itself, but also shares the pressure through the support seat, load-bearing plate and transverse support column to prevent the frame from sinking. The guide column ensures that the upper pressing component does not shift during pressing. The horizontal component can easily adjust the level of the installed components to ensure the stability of the pressing state, improve the product yield, reduce equipment failures and maintenance costs, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a front view of the present invention; Figure 2A perspective view of the present invention; Figure 3 for Figure 2 A magnified image of point A; Figure 4 It is a cross-sectional structural schematic diagram of the present invention; Figure 5 It is a structural schematic diagram of the pressure-bearing frame of the present invention; Figure 6 It is a schematic diagram of the partial structure of the present invention Figure 1 ; Figure 7 for Figure 6 The enlarged view of point B; Figure 8 It is a schematic diagram of the partial structure of the present invention Figure 2 ; Fig. 9 It is a schematic diagram of the partial structure of the present invention Figure 3 ; Fig.10 It is a schematic diagram of the partial structure of the present invention Figure 4 ; Fig.11 It is a marked diagram of the stress points of the pressure frame of the present invention.

[0021] The markings in the figure are as follows: 100. Install the housing; 200, pressure-bearing components; 210, pressure frame; 211, horizontal component; 220, upper pressure plate; 230, guide column; 240, lower pressure plate; 250, transverse support column; 300, pressing components; 310, upper pressing assembly; 311, driving member; 312, upper pressing member; 320, lower pressing assembly; 321, moving assembly; 322, fixed mold; 323, pressing chamber; 400, mold assembly; 410, molding cavity; 500, linkage mold; 510, cylinder; 520, movable plate; 530, upper mold; 600, demoulding component; 610, screw lifting mechanism; 700, mandrel assembly; 710. Lifting assembly; 720. Mandrel body. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Combination Figures 1 to 11 As shown, one embodiment of the present invention provides a pressing structure for pressing powder metal, comprising: Install the housing 100; A pressure-bearing component 200, wherein the pressure-bearing component 200 is mounted on the mounting housing 100; A pressing assembly 300, wherein the pressing assembly 300 is installed on the pressure-bearing assembly 200; A mold assembly 400, wherein the mold assembly 400 is mounted on the pressing assembly 300; A linkage mold 500, wherein the linkage mold 500 is installed on the pressing assembly 300; A demoulding assembly 600, wherein the demoulding assembly 600 is mounted on the mounting housing 100; A mandrel assembly 700, wherein the mandrel assembly 700 is mounted on the mounting housing 100; The pressing assembly 300 includes an upper pressing assembly 310 and a lower pressing assembly 320; the upper pressing assembly 310 is installed on the pressure-bearing assembly 200, and the lower pressing assembly 320 is installed on the mounting housing 100; The pressure-bearing component 200 is used to disperse the pulling force generated during pressing; The linkage mold 500 is used to prevent powder from overflowing the mold during reverse powder filling; The mold assembly 400 is used to shape the pressed powder; The demoulding assembly 600 is used to drive the mold assembly 400 to move so as to demould the product; The mandrel assembly 700 is used to move synchronously when the product is demoulded; The mandrel assembly 700 includes a lifting assembly 710 and a mandrel body 720. The lifting assembly 710 is installed on the installation housing 100, and the mandrel body 720 is installed on the output end of the lifting assembly 710. The pressure-bearing assembly 200 includes a pressure-bearing frame 210 , an upper pressure-bearing plate 220 , a plurality of guide columns 230 , a lower pressure-bearing plate 240 and a plurality of transverse support columns 250 .

[0027] In an embodiment of the present invention, the mold assembly 400 is moved to the pressing position through the demolding assembly 600, and powder is filled after being moved to the pressing position. After filling the powder, the upper pressing assembly 310 is started again, and the upper pressing assembly 310 is pressed downward, and the lower pressing assembly 320 is fixed on the lower pressure plate 240. During the pressing process, the core rod is used to stabilize the entire device. During the pressing process, the linkage mold 500 can keep the pressed mold tightly attached to the mold assembly 400 for a period of time (this time is controllable, and the pressing time of the linkage mold 500 can be controlled by program control or other methods). In a general pressing process, the mold rises too fast, and the powder is only subjected to a short force after being pressed, which causes the powder to expand easily and thus produce defective products (the expansion is because it has not been pressed under pressure for a long time). The pressing time of the powder can be controlled by setting the pressing time of the linkage mold 500 and the rising time of the upper pressing assembly 310. When the control component 310 rises to the limit point of the linkage mold 500, the linkage mold 500 is driven up together. After the linkage mold 500 rises, the product is demolded. During the demolding process, the demolding component 600 is started, and the demolding component 600 drives the mold component 400 to move to demold the product. During this process, there is a certain friction between the core rod and the molded powder product (because the powder is blocked by the cavity in the mold component 400, which causes the friction between the powder product and the core rod to be relatively large at this time). If it is directly ejected, there is a high probability that the molded product will be damaged. Therefore, the present invention simultaneously starts the lifting component 710 to drive the core rod to move, and the core rod will be ejected together with the product (after ejecting, the powder product is not blocked by the cavity on the mold component 400, so it is easier to demold). It will be more stable to demold the product later. The pressure-bearing component 200 withstands the force generated when pressing the powder during the pressing process.

[0028] In one embodiment, the pressure frame 210 is disposed on the mounting housing 100; The upper pressure bearing plate 220 is fixedly disposed on the pressure bearing assembly 200; One end of a plurality of guide posts 230 is fixedly disposed on a side of the upper pressure plate 220 away from the pressure frame 210; The lower pressure plate 240 is fixedly disposed on the pressure frame 210, and one end of the guide column 230 away from the upper pressure plate 220 is fixedly disposed on the lower pressure plate 240, and the lower pressure plate 240 is located below the lower pressure frame; The plurality of transverse support columns 250 are all disposed on the pressure frame 210; The pressure frame 210 is symmetrically provided with horizontal components 211 , and the horizontal components 211 are symmetrically and detachably mounted on the pressure frame 210 by bolts.

[0029] In the embodiment of the present invention, the pressure frame 210 is used to withstand the pulling force when pressing the powder, thereby improving the pressure bearing capacity of the pressing device. The guide column 230 is used to ensure that the upper pressing assembly 310 does not deviate during pressing. The lateral support column 250 increases the pressure bearing capacity of the pressure plate, and shares part of the pulling force for the pressure frame 210 (the force bearing point is as shown in FIG. Fig.11 As shown), the overall stability is maintained; It should be noted that the pressure frame 210 is provided with a support seat that is adapted to the size of the lower pressure plate 240, and the support can also play a role in sharing the pressure. If there is no transverse support column 250, when the bearing frame cannot withstand the pulling force of the compression, the entire frame will be concave toward the center point of the frame. The addition of the transverse support column 250 improves the overall pressure bearing capacity, and the pressure frame 210 is integrally formed with a bearing plate (such as Fig.11 As shown), the bearing plate is also provided to improve the overall pressure bearing capacity, which is explained here.

[0030] Further, such as Figure 7 As shown, the horizontal component 211 is a horizontal block, the pressure frame 210, the upper pressure plate 220, a plurality of guide columns 230 and the lower pressure plate 240 are first installed as a whole and then placed in the bearing frame. The lower pressure plate 240 is located on two horizontal blocks. The horizontal blocks are used to ensure the level of the overall installed components. If it is found that it is not in a horizontal state, horizontal blocks of different thicknesses can be replaced for adjustment. If the installed components are not in a horizontal state, it will affect the pressing state and the yield rate of the product. The horizontal component 211 is conveniently disassembled to adjust the level of the installed components, and the components placed on the bearing frame can be quickly adjusted to be horizontal.

[0031] In one embodiment, the mold assembly 400 is movably disposed on a plurality of the support columns; The mold assembly 400 is provided with a molding cavity 410 .

[0032] In the embodiment of the present invention, the mold assembly 400 is movably connected to a plurality of support columns, and can be moved on the support columns by the demoulding assembly 600, and can be moved to a designated position according to demand, so as to facilitate the pressing of powder, and the molding cavity 410 is used to mold the pressed powder; When the demoulding assembly 600 drives the mold assembly 400 to move, subsequent demoulding can be performed. After the demoulding assembly 600 is moved, the molded product will be slowly ejected, as explained here.

[0033] In one embodiment, the upper pressing assembly 310 includes a driving member 311 and an upper pressing member 312; The driving member 311 is installed on the pressure-bearing assembly 200; The upper pressing member 312 is installed on the output end of the driving member 311; The upper pressing piece 312 is provided with an opening which is adapted to the size of the core rod.

[0034] In an embodiment of the present invention, the upper pressing member 312 is pressed downwardly by the driving member 311. When the upper pressing member 312 is pressed downwardly, the linkage mold 500 is also driven to be pressed downwardly. The powder is compacted by the linkage mold 500 (it should be noted that the linkage component is installed on the upper pressing member 312. When the upper pressing member 312 rises, the downward pressing end of the linkage component can also be maintained in the mold assembly 400, thereby preventing the powder from expanding and causing damage to the product). The opening is used to facilitate the movement of the core rod on the upper pressing member 312.

[0035] In one embodiment, the lower pressing assembly 320 includes a moving assembly 321 and a fixed mold 322; The moving assembly 321 is fixedly disposed on the lower pressure plate 240; The fixed mold 322 is fixedly arranged on the output end of the moving component 321; The fixed mold 322 is provided with a pressing chamber 323 , the core rod portion is located in the pressing chamber 323 , and the central axis of the pressing chamber 323 coincides with the central axis of the molding cavity 410 .

[0036] In an embodiment of the present invention, the moving component 321 is used to drive the fixed mold 322 to move, so as to facilitate the adjustment of the position of the fixed mold 322 according to the size of the mold molding (the function of the fixed mold 322 is to be adjusted in the molding cavity 410, and cooperate with the linkage mold 500 to press the powder). A through hole is provided in the fixed mold 322, and the through hole is connected to the pressing chamber 323. The through hole is for the convenience of the core rod to move in the fixed mold 322 (it should be noted that the core rod is movably connected in the fixed mold 322, and the core rod is partially located in the pressing chamber 323 during pressing, so as to facilitate the powder to be pressed into a corresponding shape). The pressing end of the linkage mold 500 is provided with a through hole adapted to the size of the core rod, so that it will not be affected by the core rod when pressing down.

[0037] In one embodiment, the linkage mold 500 includes a cylinder 510, a movable plate 520 and an upper mold 530; The cylinder 510 is symmetrically arranged on the upper pressing member 312; The movable plate 520 is movably connected to a plurality of the supporting columns, and one side of the movable plate 520 is fixedly arranged on the output ends of the two cylinders 510; The upper mold 530 is fixedly disposed on a side of the movable plate 520 away from the cylinder 510 .

[0038] In the embodiment of the present invention, when the cylinder 510 is not started, the upper pressing piece 312 drives the movable plate 520 and the upper mold 530 to move and press downward. The cylinder 510 is started during the rising process of the upper pressing piece 312, and the cylinder 510 drives the movable plate 520 and the upper mold 530 to descend, so that the upper mold 530 is still in the molding cavity 410. During the downward pressing process, the upper mold 530 is kept pressed tightly in the mold assembly 400 by the cylinder 510. Because the mold rises too quickly during the pressing process, the powder is only subjected to a short force after pressing. If the mold rises too quickly, it will cause the powder to expand (the expansion is because it is not blocked by pressure for a long time). The powder pressing time can be controlled by setting the pressing time of the cylinder 510 and the rising time of the upper pressing assembly 310. When the upper pressing assembly 310 rises to the limit point of the cylinder 510, the linkage mold 500 is driven to rise together, and the product is demolded after the linkage mold 500 rises.

[0039] In one embodiment, the demoulding assembly 600 includes a screw lifting mechanism 610; The screw lifting mechanism 610 is installed on the installation housing 100; The lifting end of the screw lifting mechanism 610 is fixed to the mold assembly 400 .

[0040] In the embodiment of the present invention, the mold assembly 400 is driven to rise and fall by a lead screw lifting mechanism, so that the mold assembly 400 can be moved to a specified position as needed.

[0041] In one embodiment, the core rod body 720 is partially located in the pressing chamber 323; During pressing, the pressing chamber 323 and the upper pressing member 312 are located in the molding cavity 410 .

[0042] In an embodiment of the present invention, the longitudinal diameter of the core rod body 720 is consistent with the aperture of the through hole of the fixed mold 322. The core rod body 720 passes through the through hole of the fixed mold 322 and extends to the pressing chamber 323. The above does not mean that the core rod is consistently located in the pressing chamber 323, but is just one of the states, because the core rod body 720 can be adjusted by the lifting assembly 710, which is explained here.

[0043] One embodiment of the present invention provides a method for using a pressing structure, comprising: A pressing structure as described in any one of the above embodiments, and Steps for using the pressed structure: The mold assembly 400 is moved to the pressing position through the demolding assembly 600, and powder is filled after moving to the pressing position. After filling the powder, the upper pressing assembly 310 is started again, and the upper pressing assembly 310 is pressed downward, and the lower pressing assembly 320 is fixed on the lower pressure plate 240. During the pressing process, the core rod is used to stabilize the entire equipment. During the pressing process, the linkage mold 500 keeps the pressed mold tightly attached to the mold assembly 400. After the upper pressing assembly 310 rises for a period of time, the linkage mold 500 is retracted, and the product is demolded. During the demolding process, the demolding assembly 600 is started, and the demolding assembly 600 drives the mold assembly 400 to move, thereby demolding the product. During this process, the lifting assembly 710 is simultaneously started to drive the core rod to move, and the core rod will be ejected together with the product.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the paper document and the contents of the drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pressing structure for pressing powdered metal, characterized in that: include: Install the housing (100); A pressure-bearing component (200), the pressure-bearing component (200) being mounted on the mounting housing (100); A pressing assembly (300), the pressing assembly (300) being mounted on the pressure-bearing assembly (200); A mold assembly (400), wherein the mold assembly (400) is mounted on the pressing assembly (300); A linkage mold (500), wherein the linkage mold (500) is mounted on the pressing assembly (300); A demoulding assembly (600), the demoulding assembly (600) being mounted on the mounting housing (100); A mandrel assembly (700), the mandrel assembly (700) being mounted on the mounting housing (100); The pressing assembly (300) comprises an upper pressing assembly (310) and a lower pressing assembly (320); the upper pressing assembly (310) is mounted on the pressure-bearing assembly (200), and the lower pressing assembly (320) is mounted on the mounting shell (100); The pressure-bearing component (200) is used to disperse the pulling force generated during pressing; The linkage mold (500) is used to prevent powder from overflowing the mold during reverse powder filling; The mold assembly (400) is used to shape the pressed powder; The demoulding assembly (600) is used to drive the mold assembly (400) to move so as to demould the product; The core rod assembly (700) is used to move synchronously when the product is demoulded; The mandrel assembly (700) comprises a lifting assembly (710) and a mandrel body (720); the lifting assembly (710) is mounted on the mounting housing (100), and the mandrel body (720) is mounted on the output end of the lifting assembly (710); The pressure-bearing assembly (200) comprises a pressure-bearing frame (210), an upper pressure-bearing plate (220), a plurality of guide columns (230), a lower pressure-bearing plate (240), and a plurality of transverse support columns (250).

2. A pressing structure according to claim 1, characterized in that: The pressure bearing frame (210) is arranged on the installation shell (100); The upper pressure-bearing plate (220) is fixedly arranged on the pressure-bearing component (200); One end of a plurality of the guide columns (230) is fixedly arranged on a side of the upper pressure plate (220) away from the pressure frame (210); The lower pressure plate (240) is fixedly arranged on the pressure frame (210), one end of the guide column (230) away from the upper pressure plate (220) is fixedly arranged on the lower pressure plate (240), and the lower pressure plate (240) is located below the lower pressure frame; A plurality of the transverse support columns (250) are arranged on the pressure frame (210); The pressure-bearing frame (210) is symmetrically provided with horizontal components (211), and the horizontal components (211) are symmetrically and detachably mounted on the pressure-bearing frame (210) by means of bolts; The lower pressure plate (240) is mounted on the horizontal component.

3. A pressing structure according to claim 1, characterized in that: The mold assembly (400) is movably arranged on a plurality of the support columns; The mold assembly (400) is provided with a molding cavity (410).

4. A pressing structure according to claim 1, characterized in that: The upper pressing component (310) comprises a driving member (311) and an upper pressing member (312); The driving member (311) is mounted on the pressure-bearing component (200); The upper pressing member (312) is mounted on the output end of the driving member (311); The upper pressing piece (312) is provided with an opening whose size matches that of the core rod.

5. A pressing structure according to claim 3, characterized in that: The lower pressing component (320) includes a moving component (321) and a fixed mold (322); The moving component (321) is fixedly arranged on the lower pressure plate (240); The fixed mold (322) is fixedly arranged on the output end of the moving component (321); A pressing chamber (323) is provided on the fixed mold (322), the core rod portion is located in the pressing chamber (323), and the central axis of the pressing chamber (323) coincides with the central axis of the molding cavity (410).

6. A pressing structure according to claim 4, characterized in that: The linkage mold (500) comprises a cylinder (510), a movable plate (520) and an upper mold (530); The cylinder (510) is symmetrically arranged on the upper pressing member (312); The movable plate (520) is movably connected to a plurality of the support columns, and one side of the movable plate (520) is fixedly arranged on the output ends of the two cylinders (510); The upper mold (530) is fixedly arranged on a side of the movable plate (520) away from the cylinder (510).

7. A pressing structure according to claim 1, characterized in that: The demoulding assembly (600) comprises a screw lifting mechanism (610); The screw rod lifting mechanism (610) is installed on the installation housing (100); The lifting end of the screw lifting mechanism (610) is fixed to the mold assembly (400).

8. A pressing structure according to claim 5, characterized in that: The core rod body (720) is partially located in the pressing chamber (323).

9. A pressing structure according to claim 3, characterized in that: During pressing, the pressing chamber (323) and the upper pressing piece (312) are located inside the molding cavity (410).

10. A method for using a pressing structure, characterized in that: include: A pressing structure according to any one of claims 1 to 9, and Steps for using the pressed structure: The mold assembly (400) is moved to the pressing position through the demoulding assembly (600), and powder is filled after being moved to the pressing position. After the powder is filled, the upper pressing assembly (310) is started, and the upper pressing assembly (310) is pressed downward. The lower pressing assembly (320) is fixed on the lower pressure plate (240). During the pressing process, the entire device is stabilized by the core rod. During the pressing process, the linkage mold (500) keeps the pressed mold tightly attached to the mold assembly (400). After the upper pressing assembly (310) rises for a period of time, the linkage mold (500) is retracted. At this time, the product is demoulded. During the demoulding process, the demoulding assembly (600) is started, and the demoulding assembly (600) drives the mold assembly (400) to move so as to demould the product. During this process, the lifting assembly (710) is simultaneously started to drive the core rod to move, and the core rod will be ejected together with the product.

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