CN114085031A

CN114085031A - Precise hot-press forming device

Info

Publication number: CN114085031A
Application number: CN202111277753.3A
Authority: CN
Inventors: 马将; 杨剑; 梁雄; 张振轩; 任帅; 阮文清; 孟仕春; 吴光水
Original assignee: Shenzhen University
Current assignee: Shenzhen University
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-02-25

Abstract

The invention belongs to the technical field of amorphous alloy hot pressing equipment, and particularly relates to a precise hot-press forming device. A precision hot press molding apparatus configured to mold a target object, the precision hot press molding apparatus including a molding structure and a driving structure. The forming structure comprises a die pressing sleeve, a heating mechanism, an upper die mechanism and a lower die mechanism, wherein the die pressing sleeve is provided with a die pressing hole which penetrates through two ends of the die pressing sleeve and is used for accommodating a target object, one end of the upper die mechanism is arranged in the die pressing hole in a sliding and sealing mode, the upper die mechanism is connected with the other end of the die pressing sleeve in a sealing mode and is matched with the lower die mechanism in a die pressing mode, and the heating mechanism is connected with the die pressing sleeve and is constructed to heat the target object. The driving structure is arranged at one end of the die pressing sleeve and connected with the lower die mechanism. The upper die mechanism and the lower die mechanism are connected together through the die pressing sleeve, and the die pressing sleeve has the characteristics of high strength, low cost, exquisite structure, small volume, high forming efficiency and short forming beat.

Description

Precise hot-press forming device

Technical Field

The invention belongs to the technical field of amorphous alloy hot pressing equipment, and particularly relates to a precise hot-press forming device.

Background

At present, the amorphous alloy has excellent mechanical properties, excellent physical properties of resisting corrosion of various media, soft magnetism, hard magnetism, unique expansion characteristics and the like. The amorphous alloy has good processing performance near the glass transition temperature, so the amorphous alloy is often required to be heated to a supercooled liquid phase region for thermoplastic forming so as to obtain a required structure, and the amorphous alloy thermoplastic forming process also has the following problems:

the amorphous alloy thermoplastic forming equipment has the advantages of large vacuum cavity, slow vacuumizing, large heating load, slow heating, slow cooling and long production beat. The conventional amorphous alloy manufacturing and forming equipment has large volume, high cost and complex operation flow.

Disclosure of Invention

An object of the embodiment of the present application is to provide a precision hot press molding apparatus, which aims to solve the problem of how to simplify the structure of the precision hot press molding apparatus.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provided is a precision hot press molding apparatus configured to mold a molding target, the precision hot press molding apparatus including:

the molding structure comprises a molding sleeve, a heating mechanism, an upper die mechanism and a lower die mechanism, wherein the molding sleeve is provided with a molding hole which penetrates through two ends of the molding sleeve and is used for accommodating the target object, one end of the upper die mechanism is arranged in the molding hole in a sliding and sealing manner, the upper die mechanism is connected with the other end of the molding sleeve in a sealing manner and is matched with the lower die mechanism in a molding manner, and the heating mechanism is connected with the molding sleeve and is constructed for heating the target object; and

the driving structure is arranged at one end of the die pressing sleeve and connected with the lower die mechanism;

the target object is located between the upper die mechanism and the lower die mechanism, and the driving structure drives the lower die mechanism to slide towards the upper die mechanism so as to mold and form the target object.

In one embodiment, the mold pressing sleeve is provided with a heating hole, and the heating structure comprises a heating rod arranged in the heating hole.

In one embodiment, the extending path of the heating hole is arranged along the moving direction of the lower die mechanism, and the heating hole is arranged in a plurality at intervals along the circumferential direction of the die pressing sleeve, and the heating rod is arranged in each heating hole.

In one embodiment, the molding sleeve is further provided with a cooling flow passage, and the cooling flow passage is used for flowing cooling liquid to cool the molding sleeve.

In one embodiment, the lower die mechanism comprises a transmission shaft and a lower die located in the die pressing hole, one end of the transmission shaft is connected with the lower die, the other end of the transmission shaft is connected with the driving structure, the lower die is provided with a clamping groove, and one end of the transmission shaft is clamped in the clamping groove.

In one embodiment, the driving structure includes a supporting seat and a driver for driving the lower mold mechanism, the supporting seat includes a top plate, a bottom plate and a plurality of supporting columns, one end of each supporting column is connected to the bottom plate, the other end of each supporting column is connected to the top plate, the supporting columns are arranged at intervals, the top plate is connected to the molding sleeve in a sealing manner and is provided with through holes for the transmission shaft to penetrate through, and the driver is connected to the bottom plate.

In one embodiment, a first sealing groove is formed in the through hole, and a first sealing ring for sealing the lower mold rod is arranged in the first sealing groove.

In one embodiment, the end face of the die pressing sleeve connected to the top plate is provided with a second sealing groove, the second sealing groove is arranged along the circumferential direction of the die pressing hole, and the forming structure further comprises a second sealing ring arranged in the second sealing groove.

In one embodiment, the upper die mechanism comprises a sealing cover with an upper die cavity, an upper die connected with the cavity bottom of the upper die cavity and positioned in the die pressing hole, and a spiral protrusion connected with the cavity wall of the upper die cavity, wherein a spiral groove matched with the spiral protrusion is formed in the outer surface of the die pressing sleeve, the sealing cover covers the hole opening of the die pressing hole, and the spiral protrusion is spirally locked to the spiral groove.

In one embodiment, the mold pressing sleeve is provided with a third sealing groove, the third sealing groove is arranged at an interval with the spiral groove and is provided with a third sealing ring, and the third sealing ring is used for sealing the connection between the sealing cover and the mold pressing sleeve.

The beneficial effect of this application lies in: the device is characterized in that one end of the die pressing sleeve is connected with the lower die mechanism, the other end of the die pressing sleeve is connected with the upper die mechanism, the driving structure is connected with the die pressing sleeve and drives the lower die mechanism to move, meanwhile, the heating mechanism generates heat and radiates heat to amorphous alloy through the die pressing sleeve, so that the amorphous alloy is heated to a supercooled liquid phase region, and then the die pressing mechanism is matched with the lower die mechanism to carry out die pressing on the amorphous alloy. The vacuum pumping device has the characteristics of compact structure, low energy consumption loss of the whole system, high temperature rising speed and simplicity in operation, greatly simplifies a mechanical mechanism, removes all unnecessary working spaces, enables the vacuum pumping to be faster, reduces the heating load and improves the heating efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a precision hot press molding apparatus provided in an embodiment of the present application;

FIG. 2 is an exploded view of the precision hot press molding apparatus of FIG. 1;

FIG. 3 is a schematic perspective view of the molding sleeve of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the precision hot press molding apparatus of FIG. 1;

fig. 5 is a perspective view of the sealing cap of fig. 2.

Wherein, in the figures, the respective reference numerals:

100. a precision hot press molding device; 10. forming a structure; 11. an upper die mechanism; 12. molding a sleeve; 13. a lower die mechanism; 20. a drive structure; 21. a driver; 22. a grating scale; 23. a supporting seat; 231. a top plate; 232. a support pillar; 233. a base plate; 129. a vacuum flange; 111. a sealing cover; 112. an operating handle; 113. a third seal ring; 121. die pressing holes; 123. a helical groove; 2311. a first seal ring; 2312. a through hole; 122. a second seal ring; 131. a lower die; 132. a drive shaft; 1311. a card slot; 124. heating the hole; 125. a threaded hole; 126. a second seal groove; 127. a cooling flow channel; 114. a cooling channel; 2313. a cooling tank; 128. an air exhaust hole; 115. a spiral protrusion; 116. an upper mold cavity;

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present application, and the specific meanings of the above terms may be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1 and 3, an embodiment of the present application provides a precision hot press molding apparatus 100 configured to hot press mold a target object. Alternatively, the target may be an amorphous alloy, glass, or the like. In this embodiment, the target is an amorphous alloy.

Referring to fig. 1 and 3, the precision hot press molding apparatus 100 includes a molding structure 10 and a driving structure 20. The molding structure 10 includes a molding sleeve 12, a heating mechanism, an upper die mechanism 11, and a lower die mechanism 13. Optionally, the mold pressing sleeve 12 is vertically disposed, the mold pressing sleeve 12 is provided with a mold pressing hole 121 penetrating through two ends thereof and accommodating the object, and an extending direction of the mold pressing hole 121 is vertically disposed. One end of the upper die mechanism 11 is slidably and hermetically arranged in the die pressing hole 121, and the upper die mechanism 11 is hermetically connected with the other end of the die pressing sleeve 12 and is in die pressing fit with the lower die mechanism 13. It will be appreciated that the lower die mechanism 13 is driven by external force to slide back and forth along the molding hole 121 for molding engagement with the upper die mechanism 11, or to perform demolding after molding is completed. The heating mechanism is coupled to the mold sleeve 12 and is configured to heat the amorphous alloy. Alternatively, the amorphous alloy may be heated to its supercooled liquid region by the heating mechanism, thereby facilitating the subsequent press-fitting of the upper and lower die mechanisms 11 and 13. Alternatively, the mold sleeve 12 has a predetermined mechanical strength, and the amorphous alloy is placed on the lower mold mechanism 13 and moves together with the lower mold mechanism 13 toward the upper mold mechanism 11.

Referring to fig. 1 and 3, it can be understood that the mold pressing sleeve 12 is further provided with a pumping hole 128, the pumping hole 128 is communicated with the mold pressing hole 121, a vacuum flange 129 is provided at the hole of the pumping hole 128, and a resistance gauge and a vacuum structure are provided at the vacuum flange 129, for example, a vacuum pump is connected to the pumping hole 128, so that gas in the mold pressing hole 121 can be rapidly pumped out, the mold pressing hole 121 meets a predetermined vacuum degree requirement, or inert shielding gas, such as helium, is filled into the mold pressing hole 121 through the pumping hole 128.

Referring to fig. 1 and fig. 3, optionally, a driving structure 20 is disposed at one end of the molding sleeve 12 and connected to the lower mold mechanism 13; the target object is located between the upper die mechanism 11 and the lower die mechanism 13, and the driving structure 20 drives the lower die mechanism 13 to slide towards the upper die mechanism 11 so as to mold the target object.

One end of a molding sleeve 12 is connected with a lower die mechanism 13, the other end of the molding sleeve 12 is connected with an upper die mechanism 11, a driving structure 20 is connected with the molding sleeve 12 and drives the lower die mechanism 13 to move, meanwhile, a heating mechanism generates heat and radiates heat to amorphous alloy through the molding sleeve 12 so as to heat the amorphous alloy to a supercooled liquid phase region, and then the amorphous alloy is matched with the upper die mechanism 11 through the molding of the upper die mechanism 11 and the lower die mechanism 13 so as to mold the amorphous alloy. The system also has the characteristics of compact structure, low energy consumption loss of the whole system, high temperature rise speed and simple operation.

Referring to fig. 1 and fig. 3, optionally, the precision hot press molding apparatus 100 further includes a control structure, which is a single chip microcomputer control structure, and has a compact structure and a low cost.

In one embodiment, the molding sleeve 12 defines a heating hole 124, and the heating structure includes a heating rod disposed in the heating hole 124. Alternatively, the heating holes 124 are directly formed in the molding sleeve 12, and the heating rod is placed inside the molding sleeve 12, so that the structure is compact and the size of the device is reduced.

Referring to fig. 1 and 3, optionally, the heating rod is a ceramic heating rod, and the ceramic heating rod is electrically connected to a power source, so that electric energy is transferred into heat energy to heat the amorphous alloy.

In one embodiment, the extending path of the heating hole 124 is arranged along the moving direction of the lower die mechanism 13, and a plurality of heating holes 124 are arranged at intervals along the circumferential direction of the molding sleeve 12, and the heating rod is arranged in each heating hole 124.

Referring to fig. 1 and 3, the heating holes 124 are alternatively disposed at equal intervals or non-equal intervals along the circumferential direction of the molding sleeve 12. The heating rate of the amorphous alloy can be improved by arranging a plurality of heating rods.

In one embodiment, the molding sleeve 12 further defines a cooling channel 127, and the cooling channel 127 is used for flowing a cooling fluid to cool the molding sleeve 12, the lower mold mechanism 13 and the upper mold mechanism 11, so as to prevent the amorphous alloy from being denatured.

Referring to fig. 1 and 3, optionally, the cooling channel 127 contains a cooling liquid that circulates, and after the molding process is completed, the mold jacket 12 is cooled by the cooling liquid, so that the amorphous alloy is cooled together, and the mold jacket 12 can be cooled to room temperature within two minutes.

In one embodiment, the lower mold mechanism 13 includes a transmission shaft 132 and a lower mold 131 located in the molding hole 121, one end of the transmission shaft 132 is connected to the lower mold 131, the other end of the transmission shaft 132 is connected to the driving structure 20, the lower mold 131 is provided with a clamping groove 1311, and one end of the transmission shaft 132 is clamped in the clamping groove 1311.

Referring to fig. 1 and 3, optionally, the slot 1311 is disposed in a dovetail groove structure, and the shape of one end of the transmission shaft 132 is adapted to the dovetail groove, so that the lower mold 131 and the transmission shaft 132 form a movable connection, and the driving mechanism is prevented from being locked or jammed during the movement process of driving the lower mold 131.

Optionally, the inner diameter of the molding hole 121 is matched with the outer diameter of the lower mold 131, so that the molding hole 121 not only can realize a molding function, but also can guide the lower mold 131 to move, has a guiding function, guides the lower mold 131 to slide, improves the moving precision of the lower mold 131, has a small size of the molding hole 121, can quickly realize gas extraction and temperature rise, and has a compact structure, short production cycle and high efficiency.

Referring to fig. 1 and 3, in one embodiment, the driving mechanism 20 includes a supporting base 23 and a driver 21 for driving the lower mold mechanism 13. Optionally, the actuator 21 is a hydraulic cylinder or a linear motor. In this embodiment, the driver 21 is a hydraulic oil cylinder, the driving structure 20 further includes a grating ruler 22 connected to the hydraulic oil cylinder, the distance moved by the piston rod of the hydraulic oil cylinder can be accurately measured and monitored through the grating ruler 22, the output force of the hydraulic oil cylinder is steplessly adjustable, and the maximum pressure can reach 2.5 tons; after the forming is completed, cooling water is introduced into the cooling channel 127 to rapidly cool the formed structure to room temperature, thereby preventing the amorphous alloy from being denatured.

Referring to fig. 1 and fig. 3, optionally, the supporting seat 23 includes a top plate 231, a bottom plate 233 and a plurality of supporting pillars 232, one end of each supporting pillar 232 is connected to the bottom plate 233, the other end of each supporting pillar 232 is connected to the top plate 231, the supporting pillars 232 are arranged at intervals, the top plate 231 is hermetically connected to the molding press sleeve 12 and is provided with through holes 2312 for the transmission shaft 132 to penetrate through, and the driver 21 is connected to the bottom plate 233.

In one embodiment, a first sealing groove is formed in the through hole 2312, and a first sealing ring 2311 for sealing the rod of the lower die 131 is arranged in the first sealing groove.

Referring to fig. 1 and 3, optionally, the first sealing ring 2311 is made of a rubber material, and the first sealing ring 2311 is matched with the first sealing groove to seal the transmission shaft 132.

In an embodiment, a second sealing groove 126 is formed in an end surface of the molding sleeve 12 connected to the top plate 231, the second sealing groove 126 is disposed along a circumferential direction of the molding hole 121, and the molding structure 10 further includes a second sealing ring 122 disposed in the second sealing groove 126.

Referring to fig. 1 and 3, the second sealing ring 122 is made of rubber material, and the second sealing ring 122 and the second sealing groove 126 cooperate to seal the connection between the top plate 231 and the die sleeve 12.

Optionally, the top plate 231 is further provided with a cooling groove 2313, the cooling groove 2313 is arranged along the circumferential direction of the second sealing ring 122, and a cooling liquid which flows in a circulating manner is contained in the cooling groove 2313, so that the temperature of the top plate 231 is prevented from being too high, and the first sealing ring 2311 and the second sealing ring 122 can be cooled.

Referring to fig. 1 and 3, it can be understood that the mold sleeve 12 and the top plate 231 can be connected by bolts, and optionally, the mold sleeve 12 is provided with a threaded hole 125, and the top plate 231 is provided with a locking hole, so that the mold sleeve 12 is locked to the top plate 231 by bolts.

Referring to fig. 4 and 5, in one embodiment, the upper mold mechanism 11 includes a sealing cover 111 having an upper mold cavity 116, an upper mold (not shown) connected to the bottom of the upper mold cavity 116 and located in the molding hole 121, and a spiral protrusion 115 connected to the wall of the upper mold cavity 116.

Optionally, the upper mold is matched with the lower mold 131 in a mold pressing manner to mold the amorphous alloy.

Referring to fig. 4 and 5, optionally, a spiral groove 123 adapted to the spiral protrusion 115 is formed on an outer surface of the molding sleeve 12, the sealing cover 111 covers an opening of the molding hole 121, and the spiral protrusion 115 is screwed and locked to the spiral groove 123. The sealing cover 111 rotates a preset angle, so that the spiral protrusion 115 is locked with the spiral groove 123, and the operation is simple and the assembly and disassembly are convenient.

Alternatively, the spiral protrusion 115 and the spiral groove 123 are provided in pairs, and two pairs are provided, and the two spiral protrusions 115 are symmetrically provided. Alternatively, the spiral protrusion 115 and the groove wall of the spiral groove 123 have a self-locking function therebetween, so that the sealing cover 111 is not loosened during the compression molding process.

Referring to fig. 1 and 3, in an embodiment, the molding sleeve 12 is provided with a third sealing groove, the third sealing groove is spaced from the spiral groove 123 and is provided with a third sealing ring 113, and the third sealing ring 113 is used for sealing the connection between the sealing cover 111 and the molding sleeve 12.

Alternatively, the third sealing ring 113 is made of a rubber material, and the connection between the molding sleeve 12 and the sealing cover 111 can be sealed by the cooperation of the third sealing ring 113 and the third sealing groove.

Optionally, the sealing cover 111 is also opened with a cooling channel 114 to cool the third sealing ring 113.

Optionally, the sealing cover 111 is further provided with an operating handle 112.

The above are merely alternative embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A precision hot press molding apparatus configured to mold a molding target, characterized by comprising:

2. The precision hot press molding apparatus according to claim 1, characterized in that: the mould pressing sleeve is provided with a heating hole, and the heating structure comprises a heating rod arranged in the heating hole.

3. The precision hot press molding apparatus according to claim 2, characterized in that: the extension path of the heating hole is arranged along the moving direction of the lower die mechanism, the heating holes are arranged in a plurality of positions at intervals along the circumferential direction of the die pressing sleeve, and the heating rod is arranged in each heating hole.

4. The precision hot press molding apparatus according to claim 1, characterized in that: the molding sleeve is also provided with a cooling runner, and the cooling runner is used for cooling liquid to flow so as to cool the molding sleeve.

5. The precision hot press molding apparatus according to any one of claims 1 to 4, characterized in that: the lower die mechanism comprises a transmission shaft and a lower die located in the die pressing hole, one end of the transmission shaft is connected with the lower die, the other end of the transmission shaft is connected with the driving structure, the lower die is provided with a clamping groove, and one end of the transmission shaft is clamped in the clamping groove.

6. The precision hot press molding apparatus according to claim 5, characterized in that: the driving structure comprises a supporting seat and a driver for driving the lower die mechanism, the supporting seat comprises a top plate, a bottom plate and a plurality of supporting columns, one end of each supporting column is connected with the bottom plate, the other end of each supporting column is connected with the top plate, the supporting columns are arranged at intervals, the top plate is connected with the molding sleeve in a sealing mode and is provided with through holes for the transmission shaft to penetrate through, and the driver is connected with the bottom plate.

7. The precision hot press molding apparatus according to claim 6, wherein: a first sealing groove is formed in the through hole, and a first sealing ring used for sealing the lower mold rod is arranged in the first sealing groove.

8. The precision hot press molding apparatus according to claim 6, wherein: the molding structure is characterized in that the molding sleeve is connected with the end face of the top plate, a second sealing groove is formed in the end face of the top plate, the second sealing groove is arranged along the circumferential direction of the molding hole, and the molding structure further comprises a second sealing ring arranged in the second sealing groove.

9. The precision hot press molding apparatus according to any one of claims 1 to 4, characterized in that: the upper die mechanism comprises a sealing cover with an upper die cavity, an upper die connected with the cavity bottom of the upper die cavity and located in the die pressing hole, and a spiral protrusion connected with the wall of the upper die cavity, wherein the outer surface of the die pressing sleeve is provided with a spiral groove matched with the spiral protrusion, the sealing cover covers the hole opening of the die pressing hole, and the spiral protrusion is spirally locked in the spiral groove.

10. The precision hot press molding apparatus according to claim 9, wherein: the mould pressing sleeve is provided with a third sealing groove, the third sealing groove and the spiral groove are arranged at intervals and are provided with a third sealing ring, and the third sealing ring is used for sealing the connection between the sealing cover and the mould pressing sleeve.