Positioning device for auxiliary welding of crystal furnace cavity

Abstract

The utility model discloses a crystal furnace cavity auxiliary welding positioning device which comprises a driving mechanism, a driving rod, a first base, a second base, a first connecting rod, a second connecting rod and an auxiliary positioning piece. The auxiliary positioning piece is arranged outwards, and a spherical supporting part is arranged at the end of the auxiliary positioning piece. According to the positioning device, the driving mechanism, the driving rod, the first base, the second base, the first connecting rod, the second connecting rod, the auxiliary positioning piece and other components are matched to form a small-amplitude splayed supporting structure, and the positioning device can be inserted into the furnace cover during contraction and can be inserted into the furnace cover by means of the abutting part of the first connecting rod and / or the spherical supporting part of the auxiliary positioning piece during stretching. The furnace cover positioning device can be suitable for auxiliary positioning of various furnace cover structures, the application range of equipment is widened, and therefore the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of furnace body positioning, in particular to a positioning device for auxiliary welding of a crystal furnace cavity. Background Art

[0002] A crystal furnace, also known as a crystal growth furnace, is a high-precision device used to grow various crystal materials in laboratories and industrial production. These crystals can be used to manufacture materials for electronic devices, optical devices, lasers and other high-tech products, such as single crystal silicon, sapphire wafers, etc.

[0003] A single crystal furnace is a type of crystal growth furnace, which includes an upper furnace body, a lower furnace body, and a furnace cover arranged between the upper furnace body and the lower furnace body, etc. The furnace cover is equivalent to the semicircular head of the lower furnace body. In the welding process, a longitudinal placement method is often adopted. Specifically, a hoist is required to lift the furnace cover, and then place it above the lower furnace body. After the two are butt-jointed, welding is performed. In the above-mentioned longitudinal placement welding process, since the furnace cover has a large weight, welding after lifting it will cause safety problems, and the contraction of the hoist chain also needs to be better controlled. At present, there is a method of placing the furnace body horizontally and fixing it before welding. Specifically, a support frame with rollers is used. The upper furnace body is first placed on the rollers of the support frame. Then a rotating auxiliary device is used to assist in the positioning of the furnace cover. The furnace cover is then placed on the other end of the support frame and rolled along with the rollers to facilitate welding. A centrally positioned longitudinal rod is provided at the tail end of the auxiliary device. After being inserted into the furnace cover, it can be well positioned and docked with the lower furnace body. However, the auxiliary device is only suitable for furnace covers with one inner diameter. When furnace covers with other inner diameters need to be welded, the longitudinal rod needs to be replaced and the center position needs to be readjusted before use. That is, the auxiliary device is relatively single in use and is not suitable for a variety of furnace cover structures, which will affect production efficiency. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a positioning device for auxiliary welding of a crystal furnace cavity to solve the above-mentioned traditional problems.

[0005] The utility model is implemented by the following technical solutions:

[0006] A positioning device for auxiliary welding of a crystal furnace cavity, comprising a driving mechanism, a driving rod connected to the driving mechanism, a first base connected to the driving rod, a second base, a first connecting rod arranged on opposite sides of the first base, a second connecting rod movably connected to the first connecting rod and the second base respectively, and an auxiliary positioning piece fixedly installed at the end of the first connecting rod, an abutment portion is provided at one end of the first connecting rod close to the auxiliary positioning piece, the auxiliary positioning piece is arranged outwardly and a spherical support portion is provided at the end of the auxiliary positioning piece.

[0007] Preferably, the first connecting rod is arranged in a V shape.

[0008] Preferably, the abutting portion is arranged in a corrugated shape.

[0009] Preferably, a rollable abutment ball is sleeved on the abutment portion.

[0010] Preferably, the abutment ball is a wear-resistant plastic ball.

[0011] Preferably, the angle formed between the auxiliary positioning member and the first connecting rod is an obtuse angle.

[0012] Preferably, the angle formed between the auxiliary positioning member and the first connecting rod is 120°-145°.

[0013] Preferably, the length of the second connecting rod is less than 1 / 2 of the length of the first connecting rod.

[0014] Preferably, the driving mechanism is an electric drive motor or a pneumatic drive motor.

[0015] Preferably, a through hole is provided in the middle of the first base, and the driving rod is penetrated into the first base through the through hole; the first connecting rod is hinged to the first base, one end of the second connecting rod is hinged to the V-shaped connection of the first connecting rod, and the other end of the second connecting rod is hinged to the second base.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The positioning device of the utility model cooperates with components such as a driving mechanism, a driving rod, a first base, a second base, a first connecting rod, a second connecting rod and an auxiliary positioning piece to form a small-amplitude figure-eight-shaped support structure. When contracted, it can be inserted into the furnace cover. When extended, the furnace cover can be positioned with the aid of the abutment portion of the first connecting rod and / or the spherical supporting portion of the auxiliary positioning piece to assist in welding it with the lower furnace body. It can be suitable for the auxiliary positioning of various furnace cover structures, improve the application range of the equipment, and thus improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the fully extended structure of the positioning device of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the fully retracted structure of the positioning device shown;

[0020] Figure 3 for Figure 1 A schematic diagram of the matching structure between the positioning device and the furnace cover is shown.

[0021] In the figure: 10, driving rod; 20, first base; 30, second base; 40, first connecting rod; 41, abutment portion; 50, second connecting rod; 60, auxiliary positioning member; 61, spherical supporting portion. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the description of the present utility model, it is necessary to understand that when an element is considered to be "connected" to another element, it may be directly connected to another element or there may be intermediate elements at the same time. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.

[0025] See also Figure 1-Figure 3, which is a positioning device of a preferred embodiment of the utility model, is used for auxiliary welding of the crystal furnace cavity, especially auxiliary welding of the furnace cover, and cooperates with the support frame with rollers to dock with the lower furnace body. Specifically, the positioning device includes a driving mechanism (not shown), a driving rod 10 connected to the driving mechanism, a first base 20 connected to the driving rod 10, a second base 30, a first connecting rod 40 arranged on opposite sides of the first base 20, a second connecting rod 50 movably connected to the first connecting rod 40 and the second base 30, and an auxiliary positioning member 60 fixedly installed at the end of the first connecting rod 40. The driving mechanism is used to drive the driving rod 10 to move axially, so as to drive the second base 30 to move toward the first base 20, and drive the first connecting rod 40 and the second connecting rod 50 to extend. The first base 20 is provided with a fixing device on the outside to fix it; the first connecting rod 40 is provided with an abutment portion 41 at one end close to the auxiliary positioning member 60, which is used to abut against the entrance of the furnace cover to assist in the positioning of the furnace cover, or to cooperate with the auxiliary positioning member 60 to position the furnace cover. The auxiliary positioning member 60 is arranged outwardly and a spherical supporting portion 61 is provided at the end of the auxiliary positioning member 60, which is used to abut against the furnace cover when the equipment is extended. Since the supporting portion is spherical, scratches on the inner wall of the furnace cover can be avoided. The supporting portion can also be arranged as a rotatable structure to facilitate the rolling of the roller.

[0026] The above-mentioned positioning device cooperates with components such as a driving mechanism, a driving rod 10, a first base 20, a second base 30, a first connecting rod 40, a second connecting rod 50 and an auxiliary positioning member 60 to form a small-amplitude figure-eight-shaped support structure. When retracted, it can be inserted into the furnace cover. When extended, the furnace cover can be positioned with the aid of the abutment portion 41 of the first connecting rod 40 and / or the spherical support portion 61 of the auxiliary positioning member 60 to assist in welding it with the lower furnace body. It can be suitable for auxiliary positioning of various furnace cover structures, thereby increasing the application range of the equipment and thus improving production efficiency.

[0027] In this embodiment, the first connecting rod 40 is roughly V-shaped, so that its end can be inserted into the furnace cover when it is retracted. In one embodiment, the abutment portion 41 is corrugated, and the corrugated structure forms an abutment with the entrance of the furnace cover to position it. In other embodiments, the abutment portion 41 does not need to abut with the entrance of the furnace cover. Optionally, a rollable abutment ball is sleeved on the abutment portion 41, and the abutment ball can be one or more. Through the action of the abutment ball, the rolling of the roller is coordinated, or the scratches on the furnace cover during abutment are reduced. In one embodiment, the abutment ball is but not limited to a wear-resistant plastic ball.

[0028] In other embodiments, the spherical support portion 61 is, but not limited to, a wear-resistant plastic ball, and may also be a rotating structure.

[0029] In this embodiment, the angle formed between the auxiliary positioning member 60 and the first connecting rod 40 is an obtuse angle. Specifically, the angle formed between the auxiliary positioning member 60 and the first connecting rod 40 is 120°-145°.

[0030] Optionally, the length of the second connecting rod 50 is less than 1 / 2 of the length of the first connecting rod 40. The driving mechanism is an electric driving motor or a pneumatic driving motor. A through hole is provided in the middle of the first base 20, and the driving rod 10 is penetrated through the through hole in the first base 20; the first connecting rod 40 is hinged to the first base 20, one end of the second connecting rod 50 is hinged at the V-shaped connection of the first connecting rod 40, and the other end of the second connecting rod 50 is hinged to the second base 30.

[0031] When in use, when the first connecting rod 50 is fully extended, it abuts against the inner wall of the furnace cover. Figure 3 The structure shown enables the furnace cover to be positioned laterally and docked with the lower furnace cover. When the inner diameter of the furnace cover is smaller than the diameter of the two first connecting rods 50 when fully extended, the extension opening of the two first connecting rods 50 can be adjusted according to the specific inner diameter of the furnace cover to position the furnace cover. The length / angle of the auxiliary positioning member 60 can also be adjusted according to the specific furnace cover structure, which will not be repeated here.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A positioning device for auxiliary welding of a crystal furnace cavity, It is characterized in that It includes a driving mechanism, a driving rod connected to the driving mechanism, a first base connected to the driving rod, a second base, a first connecting rod arranged on opposite sides of the first base, a second connecting rod movably connected to the first connecting rod and the second base respectively, and an auxiliary positioning member fixedly installed at the end of the first connecting rod, an abutment portion is provided at one end of the first connecting rod close to the auxiliary positioning member, the auxiliary positioning member is arranged outwardly and a spherical supporting portion is provided at the end of the auxiliary positioning member.

2. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The first connecting rod is arranged in a V shape.

3. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The abutting portion is arranged in a corrugated shape.

4. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The abutment portion is sleeved with a rollable abutment ball.

5. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 4, It is characterized in that The abutment ball is a wear-resistant plastic ball.

6. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The angle formed between the auxiliary positioning member and the first connecting rod is an obtuse angle.

7. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 6, It is characterized in that The angle formed between the auxiliary positioning member and the first connecting rod is 120°-145°.

8. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The length of the second connecting rod is less than 1 / 2 of the length of the first connecting rod.

9. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that The driving mechanism is an electric driving motor or a pneumatic driving motor.

10. The positioning device for auxiliary welding of a crystal furnace cavity according to claim 1, It is characterized in that A through hole is provided in the middle of the first base, and the driving rod is penetrated into the first base through the through hole; the first connecting rod is hinged to the first base, one end of the second connecting rod is hinged to the V-shaped connection of the first connecting rod, and the other end of the second connecting rod is hinged to the second base.

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