CN-224218782-U - Corner pressing die for polycrystalline block thermoelectric material

CN224218782UCN 224218782 UCN224218782 UCN 224218782UCN-224218782-U

Abstract

The application relates to the technical field of thermoelectric materials, in particular to a corner pressing die for a polycrystalline block thermoelectric material, which comprises a base and a rotary die core, wherein the base is provided with an arc-shaped rotary groove, the rotary die core is of a cylindrical structure and is rotationally assembled in the arc-shaped rotary groove, a cross channel is arranged in the rotary die core, the center of the cross channel is positioned on the central axis of the arc-shaped rotary groove, each 90-degree rotation of the rotary die core is provided with a top opening and a side opening, the top opening is used for vertically punching a top pressure head, the side opening is used for horizontally punching a back pressure head, and a first elastic abutting part and a second elastic abutting part are arranged in the arc-shaped rotary groove. The corner pressing die for the polycrystalline thermoelectric material can package as many p-n couple pairs as possible in the raw materials in a limited volume through pressing treatment in multiple directions, and is beneficial to the thermoelectric material to output enough electric energy under low temperature difference.

Inventors

TANG TONG
ZHANG YANG
WANG ZHIBIN
XIONG TONGQIANG
QUAN ANLONG
LI WENZHENG
HUO RAN
She Xinqi
LUO XINYU
WANG YU
HUANG BEIBEI
FENG BO
YANG SHENG

Assignees

湖北科技学院
湖北香城维波科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250423

Claims (9)

1. The utility model provides a corner compacting tool set of polycrystal piece thermoelectric material, its characterized in that, includes base (1) and rotation mold core (2), be provided with convex rotation groove on base (1), rotation mold core (2) are cylindrical structure and rotate and assemble in the convex rotation groove, be provided with cross passageway (21) in rotation mold core (2), the center of cross passageway (21) is located on the axis of convex rotation groove, every rotation mold core (2) 90 degrees cross passageway (21) all have a top opening (211) and a side opening (212) are located the outside of convex rotation groove, top opening (211) are used for supplying top pressure head vertical punching, side opening (212) are used for supplying back pressure head horizontal punching, be provided with first elasticity tight portion (5) and second elasticity tight portion (6) in the convex rotation groove, first elasticity tight portion (5) are located under top opening (211), first elasticity tight portion (5) with side opening (212) are opposite.
2. The corner pressing die of the polycrystalline block thermoelectric material according to claim 1, wherein the rotating die core (2) is provided with planes (22) at four openings of the cross channel (21), and the width of the planes (22) is 2-3 times of the inner diameter of the cross channel (21).
3. The corner pressing die of the polycrystalline block thermoelectric material according to claim 1, wherein a first mounting group (3) is arranged at the top of the base (1), a second mounting group (4) is arranged at the bottom of the base (1), and the first mounting group (3) and the second mounting group (4) are used for locking and fixing the die.
4. A corner pressing die for multicrystal block thermoelectric materials according to claim 3, characterized in that the first mounting group (3) comprises a first fixing plate (31) perpendicular to the top surface of the base (1) and a first bolt (32) with a plurality of threads fitted on the first fixing plate (31), the first fixing plate (31) being flush with the outer side surface of the base (1).
5. A corner pressing die of a multicrystal block thermoelectric material according to claim 3, characterized in that the second mounting group (4) comprises a second fixing plate (41) perpendicular to the side of the base (1) and a second bolt (42) with a plurality of threads fitted on the second fixing plate (41), the second fixing plate (41) being flush with the bottom surface of the base (1).
6. The corner pressing die of the polycrystalline block thermoelectric material according to claim 1, wherein a first mounting groove (11) which is matched with the first elastic abutting portion (5) is formed in the bottom of the circular arc-shaped rotating groove, the first elastic abutting portion (5) comprises a first abutting plate (51) and a plurality of groups of first springs (52), the first abutting plate (51) is horizontally arranged, and two ends of each first spring (52) are respectively fixed to the lower surface of the first abutting plate (51) and the groove bottom of the first mounting groove (11).
7. The corner pressing die of a multicrystal block thermoelectric material according to claim 6, wherein a first guiding inclined surface (511) is provided on the peripheral side of the first abutting plate (51), and the rotating mold core (2) presses the first abutting plate (51) downward through the first guiding inclined surface (511).
8. The corner pressing die of the polycrystalline block thermoelectric material according to claim 1, wherein a second mounting groove (12) which is matched with the second elastic abutting portion (6) is formed in the side portion of the circular arc-shaped rotating groove, the first elastic abutting portion (5) comprises a second abutting plate (61) and a plurality of groups of second springs (62), the second abutting plate (61) is vertically arranged, and two ends of the second springs (62) are respectively fixed to the side face of the second abutting plate (61) and the groove bottom of the second mounting groove (12).
9. The corner pressing die of the multicrystal block thermoelectric material according to claim 8, wherein a second guiding inclined surface (611) is provided on the peripheral side of the second abutting plate (61), and the rotating mold core (2) presses the second abutting plate (61) sideways through the second guiding inclined surface (611).

Description

Corner pressing die for polycrystalline block thermoelectric material Technical Field The application relates to the technical field of thermoelectric materials, in particular to a corner pressing die of a polycrystalline block thermoelectric material. Background The thermoelectric material is a functional material with thermoelectric effect, can directly convert heat energy and electric energy, and is divided into low-temperature, medium-temperature and high-temperature thermoelectric materials according to the temperature range of the thermoelectric material, wherein the low-temperature thermoelectric material is mainly a BiTe-based material, the medium-temperature thermoelectric material is mainly a PbTe-based thermoelectric material, and the high-temperature thermoelectric material is mainly a Si-Ge-based alloy material. In the process of preparing thermoelectric materials, the materials to be pressed are placed into a custom mold, and then the materials in the mold are impacted by a stamping head. However, the common pressing mold is generally of an L-shaped channel structure, and can only impact from one direction during pressing, so that as many p-n couple pairs as possible cannot be packaged in a limited volume, and the thermoelectric material is unfavorable for outputting enough electric energy under the condition of low temperature difference. Disclosure of utility model The application provides a corner pressing die of a polycrystalline block thermoelectric material, which aims to improve the following technical problems: The common pressing die is generally of an L-shaped channel structure, and can only impact from one direction during pressing, so that as many p-n couple pairs as possible cannot be packaged in a limited volume, and the thermoelectric material is unfavorable for outputting enough electric energy under the condition of low temperature difference. The application provides a corner pressing die of a polycrystalline block thermoelectric material, which adopts the following technical scheme: The utility model provides a corner compacting tool set of polycrystal piece thermoelectric material, includes base and rotation mold core, be provided with convex rotation groove on the base, the rotation mold core is cylindrical structure and rotates the assembly in the convex rotation groove, be provided with the cross passageway in the rotation mold core, the center of cross passageway is located on the axis of convex rotation groove, every rotation mold core rotates 90 degrees the cross passageway all has a top opening and a lateral part opening is located the outside of convex rotation groove, the top opening is used for supplying top pressure head vertical punching, the lateral part opening is used for supplying back pressure head horizontal punching, be provided with first elasticity tight portion and second elasticity tight portion of supporting in the convex rotation groove, first elasticity tight portion is located under the top opening, first elasticity tight portion with the lateral part opening is opposite to be arranged. In one technical scheme of the application, the rotary mold core is provided with planes at four openings of the cross channel, and the width of the planes is 2-3 times of the inner diameter of the cross channel. In one technical scheme of the application, a first mounting group is arranged at the top of the base, a second mounting group is arranged at the bottom of the base, and the first mounting group and the second mounting group are used for locking and fixing a die. In one possible technical solution of the present application, the first mounting group includes a first fixing plate perpendicular to the top surface of the base and a first bolt with a plurality of threads assembled on the first fixing plate, and the first fixing plate is flush with the outer side surface of the base. In one possible technical solution of the present application, the second mounting group includes a second fixing plate perpendicular to the side surface of the base and a second bolt with a plurality of threads assembled on the second fixing plate, and the second fixing plate is flush with the bottom surface of the base. In one technical scheme of the application, a first mounting groove matched with the first elastic abutting part is formed in the bottom of the circular arc-shaped rotating groove, the first elastic abutting part comprises a first abutting plate and a plurality of groups of first springs, the first abutting plate is horizontally arranged, and two ends of the first springs are respectively fixed on the lower surface of the first abutting plate and the groove bottom of the first mounting groove. In one possible technical solution of the present application, a first guiding inclined plane is provided on the circumferential side of the first abutting plate, and the rotating mold core presses the first abutting plate downward through the first guiding inclined plane. I