CN219200013U

CN219200013U - High-temperature vacuum sintering furnace with self-locking furnace door

Info

Publication number: CN219200013U
Application number: CN202223577923.2U
Authority: CN
Inventors: 郝国奇; 张小元; 张亚; 夏超
Original assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Current assignee: Shengliheng Ningxia Vacuum Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-16
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a furnace gate is from high temperature vacuum sintering stove of locking, includes furnace body, furnace gate, automatic mechanism of opening and shutting, two at least self-locking mechanisms, the furnace body is connected with the furnace gate block, and the one end of automatic mechanism of opening and shutting is connected with the furnace body, and the other end of automatic mechanism of opening and shutting is connected with the furnace gate, and self-locking mechanism evenly distributed is around the furnace gate, self-locking mechanism includes fixed plate, cylinder, driving medium, retaining member, the bottom and the furnace body fixed connection of fixed plate, the one end of fixed plate is articulated with the fuselage of cylinder, and the other end of fixed plate is articulated with the retaining member, and the telescopic shaft and the driving medium of cylinder are articulated, the driving medium is the triangle, and the other both ends of driving medium are articulated with fixed plate and retaining member respectively. Compared with the screw locking furnace door in the prior art, the utility model does not need to be manually participated, and improves the safety of operation. In the locking process, the nut does not need to be rotated, all self-locking mechanisms synchronously lock the furnace door, and the efficiency is relatively high.

Description

High-temperature vacuum sintering furnace with self-locking furnace door

Technical Field

The utility model relates to the technical field of vacuum sintering furnaces, in particular to a high-temperature vacuum sintering furnace with a self-locking furnace door.

Background

The vacuum sintering furnace is a furnace for performing protective sintering on heated objects in a vacuum environment, and the heating modes are relatively large, such as resistance heating, induction heating, microwave heating and the like. Since the article needs to be heated in vacuum, the vacuum sintering furnace has a relatively high sealing requirement for the furnace body. The oven door is generally sealed by a sealing ring. In the closing process of the furnace door, the sealing ring and the furnace body have larger friction force. And the situation of incomplete closing occurs due to the large furnace door. This affects the sealability of the vacuum sintering furnace. Therefore, it is often necessary to check the locking of the oven door manually. Meanwhile, after the furnace door is completely closed, the opening process is laborious due to the action of negative pressure.

Aiming at the problems that a vacuum sintering furnace is possibly closed and the furnace door is inconvenient to open, the patent number is 201821197842.0, and the technical scheme disclosed by the patent entitled "furnace door for the vacuum sintering furnace" is as follows: a furnace door for a vacuum sintering furnace comprises a bracket rotationally connected to a furnace body and a furnace door arranged on the bracket; the bracket is provided with a vertical rod, the middle part of the vertical rod is rotationally connected with a rotating cylinder, and the axis of the rotating cylinder is mutually perpendicular to the axis of the vertical rod; the rotating cylinder is slidably connected with a screw rod with the axis on the same line with the axis of the rotating cylinder, one end of the screw rod is fixedly connected with the furnace door, and the other end of the screw rod protrudes out of the rotating cylinder; and adjusting nuts which are connected to the screw in a threaded manner are arranged at two ends of the rotating cylinder. According to the scheme, the furnace body is rotatably connected with the furnace door through the bracket, and the furnace door is fixed with the furnace body through the screw. Through bolt locking furnace gate, when needs open the furnace gate, rotatory lock nut makes the side of ring and the one side that the lug was kept away from to the fixture block no longer contact to make ring and the lateral wall of fixture block leave certain distance, rotatory axis of rotation, and shift out the connecting rod from the clearance between the fixture block in, hold the atress pole, rotatory furnace gate makes the inside and outside pressure balance of furnace body, holds the riser again, opens the furnace gate.

However, this solution also requires manual opening or closing of the oven door, which on the one hand is relatively costly in terms of labor and on the other hand presents a risk of scalding when the oven door is opened once a problem arises with the cooling system inside the oven.

Disclosure of Invention

In view of the above, it is necessary to provide a high-temperature vacuum sintering furnace with a good sealing effect and convenient opening and closing, which is self-locking, against the problem of manual opening or closing of the furnace door.

The utility model provides a furnace gate is from high temperature vacuum sintering stove of locking, includes furnace body, furnace gate, automatic mechanism of opening and shutting, two at least self-locking mechanisms, the furnace body is connected with the furnace gate block, and the one end of automatic mechanism of opening and shutting is connected with the furnace body, and the other end of automatic mechanism of opening and shutting is connected with the furnace gate, and self-locking mechanism evenly distributed is around the furnace gate, self-locking mechanism includes fixed plate, cylinder, driving medium, retaining member, the bottom and the furnace body fixed connection of fixed plate, the one end of fixed plate is articulated with the fuselage of cylinder, and the other end of fixed plate is articulated with the retaining member, and the telescopic shaft and the driving medium of cylinder are articulated, the driving medium is the triangle, and the other both ends of driving medium are articulated with fixed plate and retaining member respectively.

Preferably, the locking member is in the shape of a clamp.

Preferably, a connecting rod is arranged between the transmission piece and the locking piece, and two ends of the connecting rod are respectively hinged with the transmission piece and the locking piece.

Preferably, the automatic opening and closing mechanism comprises a fixed support, a stepping motor and a connecting frame, wherein the fixed support is fixedly connected with the furnace body, one end of the body of the stepping motor and one end of the connecting frame are pivoted with the fixed support, a telescopic shaft of the stepping motor is rotatably connected with the other end of the connecting frame, and the connecting frame is fixedly connected with the furnace door.

Preferably, the number of the self-locking mechanisms is six.

The beneficial effects are that: the furnace door is locked by the self-locking mechanism of the high-temperature vacuum sintering furnace. When in locking, the air cylinder is pushed to move forwards, so that the locking piece is propped against the furnace door. The travel of the cylinder is fixed, so that the position of the locking piece when the locking piece is propped against the furnace door is fixed, and the furnace door can be completely closed, namely, the furnace door is locked on the furnace body. Compared with the prior art, the automatic opening and closing mechanism can realize the automatic opening and closing of the furnace door. Secondly, compared with the screw locking furnace door in the prior art, the utility model does not need to be manually participated when the furnace door is opened and closed, thereby improving the safety of operation. In the locking process, the nut does not need to be rotated, all self-locking mechanisms synchronously lock the furnace door, and the efficiency is relatively high. And the structure of the self-locking mechanism can realize self-locking and prevent looseness.

Drawings

FIG. 1 is a schematic structural view of a high temperature vacuum sintering furnace with a self-locking furnace door according to the present utility model.

Fig. 2 is a schematic view showing an opened state of the self-locking mechanism of the present utility model.

Fig. 3 is a schematic view showing a locked state of the self-locking mechanism of the present utility model.

FIG. 4 is a schematic view of the automatic opening and closing mechanism of the present utility model mated with a furnace body and door.

In the figure: the furnace door self-locking high-temperature vacuum sintering furnace 10, a furnace body 20, a furnace door 30, an automatic opening and closing mechanism 40, a fixed support 401, a rotating shaft 4011, a second cylinder 402, a connecting frame 403, a pivot 4031, a self-locking mechanism 50, a fixed plate 501, a first cylinder 502, a transmission part 503, a locking part 504 and a connecting rod 505.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Referring to fig. 1 to 4, a vacuum sintering furnace 10 with a self-locking furnace door 30 comprises a furnace body 20, a furnace door 30, an automatic opening and closing mechanism 40 and at least two self-locking mechanisms 50, wherein the furnace body 20 is in clamping connection with the furnace door 30, one end of the automatic opening and closing mechanism 40 is connected with the furnace body 20, the other end of the automatic opening and closing mechanism 40 is connected with the furnace door 30, the self-locking mechanisms 50 are uniformly distributed around the furnace door 30, the self-locking mechanisms 50 comprise a fixing plate 501, a first cylinder 502, a transmission part 503 and locking parts 504, the bottom of the fixing plate 501 is fixedly connected with the furnace body 20, one end of the fixing plate 501 is hinged with a machine body of the first cylinder 502, the other end of the fixing plate 501 is hinged with the locking parts 504, a telescopic shaft of the first cylinder 502 is hinged with the transmission part 503, and the other two ends of the transmission part 503 are respectively hinged with the fixing plate 501 and the locking parts 504.

The self-locking mechanism 50 functions to secure sealability of the door 30 and not to cause the door 30 to be opened due to an external force.

The self-locking mechanism 50 itself has a driving source, such as a motor, a cylinder, an oil cylinder, etc., and drives an actuator to move by the driving source, and the actuator must consider that a certain pressure can be generated on the oven door 30 during locking, so that the oven door 30 at that position is completely closed. Meanwhile, the actuator cannot interfere with the track of the opening process of the oven door 30 when being opened, thereby affecting the normal use of the oven door 30.

The self-locking mechanism 50 should also allow for reliability in repeated use, reducing maintenance times.

The first cylinder 502 of the present utility model is a driving source of the self-locking mechanism 50, and the locking member 504 is an actuator of the self-locking mechanism 50. Since the driving source is hinged to the locking member 504 through the transmission member 503, the locking member 504 rotates around the hinge point under the driving of the first cylinder 502. When the first cylinder 502 is extended, the locking member 504 is rotated to the position of the oven door 30, thereby tightly pushing the oven door 30; when the first cylinder 502 is retracted, the locking member 504 is rotated to be offset from the oven door 30, thereby avoiding interference with the oven door 30 during the opening of the oven door 30.

The transmission part 503 is triangular, and the transmission part 503 has three hinge points, and is hinged with the first cylinder 502, the fixing plate 501 and the locking part 504 respectively. The transmission member 503 itself can rotate around the hinge point connected to the fixing plate 501 and drive the locking member 504 to rotate during rotation. Compared with linear transmission with two hinge points, triangular transmission with three hinge points can be more stable in transmission process and can bear larger acting force.

In a preferred embodiment, the locking member 504 is in the form of a clamp. The pincer-like shape of locking member 504 differs from the V-like shape in that the pincer-like shape has a more gentle bottom so that locking member 504 is more elongated and the spacing between the two ends of locking member 504 is greater. Because the self-locking mechanism 50 is arranged on the furnace body 20, the distance between the locking piece 504 and the furnace door 30 is larger, and the locking piece 504 can be tightly propped against the furnace door 30 after rotating through the pincer-shaped design.

The high requirements on the size and location of the driving member 503 and locking member 504 when the driving member 503 is hingedly coupled to the locking member 504 can increase the difficulty of implementation of the solution. In order to reduce the matching requirement of the transmission member 503 and the locking member 504, in a preferred embodiment, a connecting rod 505 is disposed between the transmission member 503 and the locking member 504, and two ends of the connecting rod 505 are hinged to the transmission member 503 and the locking member 504 respectively. When the driving part 503 rotates, the connecting rod 505 is driven to move, so that the locking part 504 is driven to rotate. The movement of the connecting rod 505 is not affected by the movement angle and the movement distance, so the adaptability is wider, and the implementation difficulty of the scheme is reduced.

The automatic opening and closing mechanism 40 controls the automatic opening or closing of the oven door 30. Specifically, the automatic opening and closing mechanism 40 includes a fixing support 401, a second air cylinder 402, and a connecting frame 403, where the fixing support 401 is fixedly connected with the furnace body 20, one end of the body of the second air cylinder 402 and one end of the connecting frame 403 are pivoted with the fixing support 401, a telescopic shaft of the second air cylinder 402 is rotatably connected with the other end of the connecting frame 403, and the connecting frame 403 is fixedly connected with the furnace door 30. The second cylinder 402 drives the connecting frame 403 to rotate, so as to drive the oven door 30 to rotate.

In a preferred embodiment, the fixing support 401 is provided with a pivot hole, correspondingly, the connecting frame 403 is provided with a pivot 4031, the pivot hole is sleeved with the pivot 4031, meanwhile, the fixing support 401 is also provided with a rotating shaft 4011, the body of the second air cylinder 402 is provided with a rotating hole, and the rotating shaft 4011 is sleeved with the rotating hole. The pivot 4031 and the shaft 4011 are both vertically disposed. The connecting frame 403 and the oven door 30 can be welded or connected by rivets or bolts. For more stable and efficient rotation, a stepper motor can be arranged at the pivot hole, the body of the stepper motor is fixedly connected with the fixed support 401, and the rotating shaft of the stepper motor is fixedly connected with the pivot 4031. The pivot 4031 is rotated by a stepper motor.

In a preferred embodiment, the number of self-locking mechanisms 50 is six. Specifically, six self-locking mechanisms 50 are distributed horizontally at 60 degrees and 120 degrees from horizontal.

The foregoing disclosure is illustrative of the preferred embodiments of the present utility model, and is not to be construed as limiting the scope of the utility model, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the utility model as defined by the appended claims.

Claims

1. A high-temperature vacuum sintering furnace with a self-locking furnace door is characterized in that: including furnace body, furnace gate, automatic mechanism of opening and shutting, two at least self-locking mechanism, the furnace body is connected with the furnace gate block, and the one end of automatic mechanism of opening and shutting is connected with the furnace body, and the other end and the furnace gate of automatic mechanism of opening and shutting are connected, and self-locking mechanism evenly distributed is around the furnace gate, self-locking mechanism includes fixed plate, cylinder, driving medium, retaining member, the bottom and the furnace body fixed connection of fixed plate, the one end of fixed plate is articulated with the fuselage of cylinder, and the other end and the retaining member of fixed plate are articulated, and the telescopic shaft and the driving medium of cylinder are articulated, the driving medium is the triangle, and the other both ends of driving medium are articulated with fixed plate and retaining member respectively.

2. The furnace door self-locking high temperature vacuum sintering furnace according to claim 1, wherein: the locking piece is in a clamp shape.

3. The furnace door self-locking high temperature vacuum sintering furnace according to claim 1, wherein: a connecting rod is arranged between the transmission piece and the locking piece, and two ends of the connecting rod are respectively hinged with the transmission piece and the locking piece.

4. The furnace door self-locking high temperature vacuum sintering furnace according to claim 1, wherein: the automatic opening and closing mechanism comprises a fixed support, a stepping motor and a connecting frame, wherein the fixed support is fixedly connected with the furnace body, one end of the stepping motor body and one end of the connecting frame are pivoted with the fixed support, a telescopic shaft of the stepping motor is rotatably connected with the other end of the connecting frame, and the connecting frame is fixedly connected with the furnace door.

5. The furnace door self-locking high temperature vacuum sintering furnace according to claim 1, wherein: the number of the self-locking mechanisms is six.