Copper powder composite sintering furnace

Abstract

The utility model relates to the technical field of powder metallurgy, in particular to a copper powder composite sintering furnace which comprises a base, a supporting frame is fixedly installed on the top of the base, a fixing block penetrates through and is fixedly installed on the outer wall of the supporting frame, a center shaft block is fixedly installed on the opposite side of the fixing block, and two rolling discs are rotatably installed on the opposite faces of the center shaft block. According to the sintering furnace, through the arrangement of the multi-stage hydraulic cylinder, when the second-stage telescopic rod contracts downwards, the furnace body can incline with the center shaft block as the axis in cooperation with upward lifting of the rolling wheels, after sintering is completed, the second-stage telescopic rod can rotate, and the sintering furnace body can be fixed through the fixed rail. According to the design, through the multi-stage hydraulic cylinders and the rollers driven by the small hydraulic cylinders, inclined discharging of the furnace body is achieved, the discharging speed after copper powder sintering is remarkably increased, the discharging time is shortened, and the production efficiency is improved. And meanwhile, the working efficiency of operators is also improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder metallurgy technical field, concretely is a copper powder composite sintering furnace. BACKGROUND

[0002] With the upgrading of powder metallurgy technology and the trend of green manufacturing, sintering furnace equipment with high efficiency, energy saving, intelligent control and environmental protection characteristics is more popular, which further promotes the market demand for advanced sintering equipment procurement and technology iteration, and benefits from the demand for high-performance composite material parts in high-end manufacturing industries such as aerospace, automobile and electronic devices, which can realize high density, uniform structure sintering process, meet the requirements of wear resistance, electrical conductivity, thermal conductivity and other comprehensive performance.

[0003] Most of the current copper powder composite sintering furnace has the following problems: after the sintering furnace door is closed, poor sealing will cause the leakage of the furnace atmosphere (such as inert gas or vacuum environment), which will destroy the heat treatment conditions required for sintering, cause copper powder oxidation, impurity penetration or temperature field unevenness, etc., thereby affecting the product density, mechanical properties and surface quality, therefore, we propose a copper powder composite sintering furnace. UTILITY MODEL CONTENT

[0004] The utility model discloses a copper powder composite sintering furnace, which solves the above problems.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A copper powder composite sintering furnace, comprising a base, a support frame fixedly installed on the top of the base, a fixed block fixedly installed through the outer wall of the support frame, a center shaft block fixedly installed on the opposite side of the fixed block, two rolling discs rotatably installed on the opposite side of the center shaft block, a fixed rail slidably installed on the opposite outer wall of the two rolling discs, a sintering furnace body fixedly installed on the inner wall of the fixed rail, a heating module arranged on the bottom of the sintering furnace body, a rotating shaft block fixedly installed on the top outer wall of the sintering furnace body, a rotating shaft plate rotatably installed on the inner wall of the rotating shaft block, a sealing door fixedly installed on the side of the rotating shaft plate close to the sintering furnace body, a guide rail fixedly installed on the outer wall of the sintering furnace body close to the fixed rail, a roller arranged on the top of the base close to the guide rail and driven by a small hydraulic cylinder, an installation block fixedly installed on the bottom of the heating module, a sealing device arranged on the outer wall of the sealing door to enhance the sealing effect, a rotary motor fixedly installed on the inner wall of the installation block, a multistage hydraulic cylinder arranged on the top of the base close to the bottom end of the sintering furnace body, a first telescopic rod slidably installed on the output end of the multistage hydraulic cylinder close to the inner wall, a second telescopic rod slidably installed on the output end of the multistage hydraulic cylinder away from the inner wall, a bearing rotatably installed on the top of the second telescopic rod and fixedly installed on the bottom inner wall of the installation block.

[0007] Preferably, the sealing device comprises an outer rotating rod, a rotating wheel, a heat insulation plate and graphite fiber rubber, the outer rotating rod penetrates and is sleeved on the outer wall of the sealing door, the rotating wheel is fixedly installed on one end of the outer rotating rod close to the outer wall of the sealing door, the heat insulation plate is fixedly installed on one end of the outer rotating rod close to the inner wall of the sealing door, a cavity is formed in the inner part of the heat insulation plate, the graphite fiber rubber is arranged on the top inner wall of the sintering furnace body, an annular cavity is formed in the inner part of the graphite fiber rubber, and the graphite fiber rubber is made of flexible special material.

[0008] Preferably, the sealing device further comprises an inner rotating rod, a knob, a special-shaped block, an inner sliding block, a fixed plate and a return spring, the inner rotating rod is rotatably installed on the inner wall of the outer rotating rod, the knob is fixedly installed on one end of the inner rotating rod away from the sintering furnace body, the special-shaped block is fixedly installed on one end of the inner rotating rod close to the sintering furnace body, a sliding channel is formed in the inner wall of the special-shaped block, the inner sliding block is slidably installed on the inner wall of the sliding channel of the special-shaped block, a square groove is formed in the outer wall of the inner sliding block, one end of the inner sliding block close to the special-shaped block is arranged in a circular arc shape, the circular arc shape of the inner sliding block is located on the movement track of the special-shaped block, the fixed plate is fixedly installed on the inner wall of the cavity of the heat insulation plate, and the return spring is arranged on one side of the fixed plate away from the special-shaped block.

[0009] By means of the above technical scheme, the copper powder composite sintering furnace provided by the utility model has at least the following beneficial effects:

[0010] (1), the utility model discloses a multistage hydraulic cylinder's setting makes two-stage telescopic rod contract downward, cooperate the upward lifting of gyro wheel, and the furnace body will be with the central shaft block as the axle and incline, when sintering is completed, multistage hydraulic cylinder and small -size hydraulic cylinder are controlled respectively, make sintering furnace main part with the central shaft block as the center and pry left and right, and this design realizes furnace body inclination and discharges through multistage hydraulic cylinder and gyro wheel driven by small -size hydraulic cylinder, and the rate of copper powder sintering discharge is improved significantly after completion, and the discharge time is shortened, and the work efficiency of operator is also improved.

[0011] (2), the utility model discloses the setting of graphite fiber rubber makes the part of inner slide block convex and heat insulating plate will touch graphite fiber rubber close to the inner wall of sintering furnace main body, and the outer pull of rotating wheel drives the outer sliding of rotating lever, and rotating lever drives the outer sliding of heat insulating plate, and heat insulating plate drives the outer sliding of inner slide block, and inner slide block extrudes graphite fiber rubber outward, and graphite fiber rubber is extruded by inner slide block small -scale, thereby can closely adhere the contact surface of furnace mouth and sealing door, and the sealing property between graphite fiber rubber and sealing door is further improved, and the sealing reliability and long -term air tightness of sintering furnace high -temperature high -pressure working condition are improved significantly. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings described here are used to provide further understanding of the utility model and constitute a part of this application:

[0013] Figure 1 It is the front view schematic diagram of the whole structure of the utility model;

[0014] Figure 2 It is the bottom view schematic diagram of the whole structure of the utility model;

[0015] Figure 3 It is the sectional view schematic diagram in example one;

[0016] Figure 4 It is the enlarged schematic diagram of A in example two;

[0017] Figure 5 It is the sectional view schematic diagram of sealing device in example two.

[0018] In the diagram: 1. Base; 11. Support frame; 12. Fixing block; 121. Central shaft block; 122. Roller; 123. Fixed rail; 13. Sintering furnace body; 131. Heating module; 132. Rotating shaft block; 133. Rotating shaft plate; 134. Sealing door; 14. Guide rail; 141. Roller; 2. Mounting block; 25. Rotary motor; 21. Multi-stage hydraulic cylinder; 22. First-stage telescopic rod; 23. Second-stage telescopic rod; 24. Bearing; 3. Sealing device; 31. Outer rotating rod; 32. Rotating wheel; 33. Heat insulation plate; 34. Graphite fiber rubber; 35. Inner rotating rod; 36. Knob; 37. Irregular block; 38. Inner slider; 39. Fixing plate; 310. Return spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] A copper powder composite sintering furnace, such as Figures 1-3 As shown, the system includes a base 1, a support frame 11 fixedly mounted on the top of the base 1, a fixing block 12 fixedly mounted through the outer wall of the support frame 11, a central shaft block 121 fixedly mounted on the opposite side of the fixing block 12, two rollers 122 rotatably mounted on the opposite side of the central shaft block 121, a fixed rail 123 slidably mounted on the opposite outer wall of the two rollers 122, a sintering furnace body 13 fixedly mounted on the inner wall of the fixed rail 123, a heating module 131 provided at the bottom of the sintering furnace body 13, a rotating shaft block 132 fixedly mounted on the top outer wall of the sintering furnace body 13, a rotating shaft plate 133 rotatably mounted on the inner wall of the rotating shaft block 132, a sealing door 134 fixedly mounted on the side of the rotating shaft plate 133 near the sintering furnace body 13, and a sealing door 134 fixedly mounted on the side of the rotating shaft plate 133 near the sintering furnace body 13. A guide rail 14 is fixedly installed on the outer wall of the fixed rail 123. A roller 141 is provided on the top of the base 1 near the guide rail 14 and is driven by a small hydraulic cylinder. An installation block 2 is fixedly installed on the bottom of the heating module 131. A sealing device 3 to enhance the sealing effect is provided on the outer wall of the sealing door 134. A rotary motor 25 is fixedly installed on the inner wall of the installation block 2. A multi-stage hydraulic cylinder 21 is provided on the top of the base 1 near the bottom of the sintering furnace body 13. A first-stage telescopic rod 22 is slidably installed on the output end of the multi-stage hydraulic cylinder 21 near the inner wall. A second-stage telescopic rod 23 is slidably installed on the output end of the multi-stage hydraulic cylinder 21 away from the inner wall. A bearing 24 is rotatably installed on the top of the second-stage telescopic rod 23 and is fixedly installed on the bottom inner wall of the installation block 2.

[0021] In operation, the copper powder composite sintering furnace of this utility model is operated by activating the small hydraulic cylinder and the multi-stage hydraulic cylinder 21 at the bottom of the roller 141. The small hydraulic cylinder lifts the guide rail 14 upwards, which in turn lifts the sintering furnace body 13. Simultaneously, the multi-stage hydraulic cylinder 21 drives the first-stage telescopic rod 22 and the second-stage telescopic rod 23 downwards to the bottom. The second-stage telescopic rod 23 moves the mounting block 2 downwards, which in turn lifts the furnace head of the sintering furnace body 13 around the central shaft block 121. The bearing 24 ensures that the downward retraction of the second-stage telescopic rod 23 does not affect its vertical movement. Then, the composite material for preparing copper powder is poured into the sintering furnace body 13. The sealing door 134 is rotated, causing the rotating shaft plate 133 to rotate around the rotating shaft block 132, closing the sintering furnace body 13. The heating module 131 is then activated, and the heating module 131 heats the sintering furnace body 13. The inner wall of the furnace is heated, and the rotary motor 25 is turned on. The output of the rotary motor 25 drives the heating module 131 to rotate. The heating module 131 drives the sintering furnace body 13 to rotate. The sintering furnace body 13 drives the fixed rail 123 and the guide rail 14 to rotate. The rotation of the fixed rail 123 causes the roller 122 to roll on its inner wall, and the roller 141 rolls inside the guide rail 14. After sintering is completed, the rotary motor 25 and the heating module 131 are turned off. The multi-stage hydraulic cylinder 21 and the small hydraulic cylinder are controlled respectively. The multi-stage hydraulic cylinder 21 drives the first-stage telescopic rod 22 and the second-stage telescopic rod 23 to extend and retract upward. The small hydraulic cylinder drives the roller 141 to retract downward. The sintering furnace body 13 prystle left and right around the central shaft block 121. This design, through the multi-stage hydraulic cylinder 21 and the roller 141 driven by the small hydraulic cylinder, realizes the tilting of the furnace body for material discharge, which significantly improves the discharge rate after copper powder sintering, shortens the discharge time, and also improves the work efficiency of the operators. Example

[0022] This embodiment, based on embodiment 1, specifically includes the following:

[0023] like Figures 4-5 As shown, the sealing device 3 includes an outer rotating rod 31, a rotating wheel 32, a heat insulation plate 33, and a graphite fiber rubber 34. The outer rotating rod 31 passes through and is sleeved on the outer wall of the sealing door 134. The rotating wheel 32 is fixedly installed at one end of the outer rotating rod 31 near the outer wall of the sealing door 134. The heat insulation plate 33 is fixedly installed at one end of the outer rotating rod 31 near the inner wall of the sealing door 134, and the heat insulation plate 33 has a cavity inside. The graphite fiber rubber 34 is set on the inner wall of the top of the sintering furnace body 13, and the graphite fiber rubber 34 has an annular cavity inside. The graphite fiber rubber 34 is a flexible special material.

[0024] The sealing device 3 further comprises an inner rotating rod 35, a knob 36, a special-shaped block 37, an inner sliding block 38, a fixed plate 39 and a reset spring 310, the inner rotating rod 35 is rotationally installed on the inner wall of the outer rotating rod 31, the knob 36 is fixedly installed on the end of the inner rotating rod 35 away from the sintering furnace body 13, the special-shaped block 37 is fixedly installed on the end of the inner rotating rod 35 close to the sintering furnace body 13, the inner wall of the special-shaped block 37 is provided with a sliding channel, the inner sliding block 38 is slidably installed on the inner wall of the sliding channel of the special-shaped block 37, the outer wall of the inner sliding block 38 is provided with a square groove, and the end of the inner sliding block 38 close to the special-shaped block 37 is provided in a circular arc shape, the circular arc shape of the inner sliding block 38 is located on the movement track of the special-shaped block 37, the fixed plate 39 is fixedly installed on the inner wall of the cavity of the heat insulation plate 33, and the reset spring 310 is arranged on the side of the fixed plate 39 away from the special-shaped block 37.

[0025] The copper powder composite sintering furnace of the utility model in use, after the traditional sintering furnace door is closed, the sintering furnace door sealing is not good, in order to solve this problem, when the sealing door 134 closes the sintering furnace body 13, the rotating wheel 32 is pushed in, the rotating wheel 32 drives the outer rotating rod 31 to slide in, the outer rotating rod 31 drives the heat insulation plate 33 to slide in, and the heat insulation plate 33 and the furnace mouth of the sintering furnace body 13 have a certain gap, due to the flexible special material of the graphite fiber rubber 34, the working range is 800 DEG C-1200 DEG C, and the internal temperature of the traditional copper powder composite sintering furnace during work is about 800 DEG C-900 DEG C, so it is suitable for sintering copper powder, so that when the heat insulation plate 33 is pushed in, the graphite fiber rubber 34 can slide to the inner wall of the furnace mouth of the sintering furnace body 13, thereby improving the sealing property between the graphite fiber rubber 34 and the sealing door 134, and improving the sealing reliability and long-term air tightness of the sintering furnace under high temperature and high pressure conditions.

[0026] Rotating the knob 36, the knob 36 drives the inner rotating rod 35 to rotate on the inner wall of the outer rotating rod 31, the inner rotating rod 35 drives the special-shaped block 37 to rotate, the convex surface of the special-shaped block 37 abuts against the arc surface of the inner sliding block 38, so that the inner sliding block 38 slides outwardly by a small amplitude, the rotating wheel 32 is pulled backward, the rotating wheel 32 drives the outer rotating rod 31 to move outwardly, the outer rotating rod 31 drives the heat insulation plate 33 and the inner rotating rod 35 to move outwardly, the heat insulation plate 33 drives the inner sliding block 38 to move outwardly, the part of the inner sliding block 38 protruding from the heat insulation plate 33 will abut against the side of the graphite fiber rubber 34 close to the inner wall of the sintering furnace body 13, so that the inner sliding block 38 extrudes the graphite fiber rubber 34 by a small amplitude, and considering that the flexibility of the graphite fiber rubber 34 is lower than that of ordinary rubber, that is, the annular cavity formed in the graphite fiber rubber 34, the graphite fiber rubber 34 can be extruded and deformed, the graphite fiber rubber 34 is deformed under pressure and can tightly fit the contact surface of the furnace port and the sealing door 134, fills the microscopic uneven gap through elasticity, effectively blocks the gas leakage path, and further improves the sealing performance between the graphite fiber rubber 34 and the sealing door 134, and significantly improves the sealing reliability and long-term air tightness of the sintering furnace under high-temperature and high-pressure working conditions.

[0027] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A copper powder composite sintering furnace comprising a base (1), characterized in that: The top of the base (1) is fixedly installed with a support frame (11), the outer wall of the support frame (11) penetrates and is fixedly installed with a fixed block (12), the opposite side of the fixed block (12) is fixedly installed with a center shaft block (121), the opposite side of the center shaft block (121) is rotatably installed with two rolling discs (122), the opposite outer walls of the two rolling discs (122) are slidably installed with a fixed rail (123), the inner wall of the fixed rail (123) is fixedly installed with a sintering furnace body (13), the bottom of the sintering furnace body (13) is provided with a heating module (131), the top outer wall of the sintering furnace body (13) is fixedly installed with a rotating shaft block (132), the inner wall of the rotating shaft block (132) is rotatably installed with a rotating shaft plate (133), one side of the rotating shaft plate (133) close to the sintering furnace body (13) is fixedly installed with a sealing door (134), the outer wall of the sintering furnace body (13) close to the fixed rail (123) is fixedly installed with a guide rail (14), the top of the base (1) close to the guide rail (14) is provided with a roller (141), and the roller (141) is driven by a small hydraulic cylinder, the bottom of the heating module (131) is fixedly installed with a mounting block (2), the outer wall of the sealing door (134) is provided with a sealing device (3) for enhancing the sealing effect, the inner wall of the mounting block (2) is fixedly installed with a rotary motor (25), and the top of the base (1) close to the bottom end of the sintering furnace body (13) is provided with a multi-stage hydraulic cylinder (21), the output end close to the inner wall of the multi-stage hydraulic cylinder (21) is slidably installed with a first telescopic rod (22), the output end away from the inner wall of the multi-stage hydraulic cylinder (21) is slidably installed with a second telescopic rod (23), the top of the second telescopic rod (23) is rotatably installed with a bearing (24), and the bearing (24) is fixedly installed on the bottom inner wall of the mounting block (2).

2. The copper powder composite sintering furnace according to claim 1, characterized in that: The sealing device (3) comprises an outer rotating rod (31), a rotating wheel (32), a heat insulation plate (33) and a graphite fiber rubber (34), the outer rotating rod (31) penetrates and is sleeved on the outer wall of the sealing door (134), the rotating wheel (32) is fixedly installed on one end of the outer rotating rod (31) close to the outer wall of the sealing door (134), the heat insulation plate (33) is fixedly installed on one end of the outer rotating rod (31) close to the inner wall of the sealing door (134), a cavity is formed in the heat insulation plate (33), the graphite fiber rubber (34) is arranged on the top inner wall of the sintering furnace body (13), a ring-shaped cavity is formed in the graphite fiber rubber (34), and the graphite fiber rubber (34) is made of flexible special material.

3. The copper powder compaction sintering furnace according to claim 2, characterized in that: The sealing device (3) further includes an inner rotating rod (35), a knob (36), a special-shaped block (37), an inner sliding block (38), a fixed plate (39) and a reset spring (310), the inner rotating rod (35) is rotationally installed on the inner wall of the outer rotating rod (31), the knob (36) is fixedly installed on one end of the inner rotating rod (35) away from the sintering furnace body (13), the special-shaped block (37) is fixedly installed on one end of the inner rotating rod (35) close to the sintering furnace body (13), and the inner wall of the special-shaped block (37) is provided with a sliding groove, the inner sliding block (38) is slidably installed on the inner wall of the sliding groove of the special-shaped block (37), the outer wall of the inner sliding block (38) is provided with a square groove, one end of the inner sliding block (38) close to the special-shaped block (37) is provided in a circular arc shape, the circular arc shape of the inner sliding block (38) is located on the movement track of the special-shaped block (37), the fixed plate (39) is fixedly installed on the inner wall of the cavity of the heat insulation plate (33), and the reset spring (310) is arranged on one side of the fixed plate (39) away from the special-shaped block (37).

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