Cover opening and closing device for large vacuum furnace

Abstract

The utility model relates to a cover body opening and closing device for a large vacuum furnace, which belongs to the technical field of vacuum eutectic furnaces and comprises a fixed seat connected to the end of a furnace chamber and a connecting rod seat connected to the end of a cover body, and the connecting rod seat is hinged to the fixed seat; the driving part and the damping part are connected to the bearing plate, and the output end of the driving part is hinged to one end of the connecting rod seat; the damping part comprises a nitrogen cylinder and a mounting seat used for connecting the nitrogen cylinder to the bearing plate, one end of the nitrogen cylinder is hinged to the mounting seat, and the other end of the nitrogen cylinder is hinged to the connecting rod seat. According to the cover body opening and closing device for the large-scale vacuum furnace, the hinged opening and closing structure is arranged between the furnace chamber and the cover body and is controlled through the driving part and the nitrogen cylinder damping part, so that the opening and closing force is more uniform and stable, the transmission of vibration is effectively reduced, the accuracy of the position of a product in the furnace chamber is further ensured, and the production efficiency is improved. And the damping part and the driving part are in vertical space fit, so that the space can be utilized more reasonably.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum eutectic furnaces, and specifically relates to a cover opening and closing device for a large vacuum furnace. Background Art

[0002] Vacuum eutectic furnaces are mainly used in the field of high-end manufacturing, such as for seamless welding of chip packaging, automotive products, train control, laser diode packaging, laboratory material tests, integrated circuit packaging, chips and substrates, and tube shell covers. These products have high requirements for welding quality. Vacuum eutectic furnaces can ensure that welding materials work in a vacuum environment or an inert gas environment, which has a good effect on improving the accuracy of welding points and ensuring the accuracy of product performance. However, for large vacuum eutectic furnaces, due to the heavy cover, it is extremely easy to cause a large impact on the furnace cavity during the process of covering the upper cover, which not only affects the service life of the furnace body, but also causes the shaking of the products to be welded inside, thereby affecting the welding accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a cover opening and closing device for a large vacuum furnace, which can solve the technical problems mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A cover opening and closing device for a large vacuum furnace, including a fixed seat connected to the end of the furnace cavity and a connecting rod seat connected to the end of the cover, the connecting rod seat is hinged to the fixed seat; it also includes a driving part and a shock-absorbing part connected to the bearing plate, the output end of the driving part is hinged to one end of the connecting rod seat; the shock-absorbing part includes a nitrogen cylinder and a mounting seat for connecting the nitrogen cylinder to the bearing plate, one end of the nitrogen cylinder is hinged to the mounting seat, and the other end is hinged to the connecting rod seat.

[0005] In a preferred embodiment, the driving part and the shock-absorbing part are respectively arranged in two groups, which are respectively used for driving and shock-absorbing the connecting rod seats on both sides of the cover. With force applied simultaneously on both sides, the force on the cover can be made more uniform, and the opening and closing stability can be improved.

[0006] In a preferred embodiment, the connecting rod seat includes a first connection end, a second connection end, and a hinge end located between the two connection ends. The first connection end is connected to the cover, the hinge end is hinged to the fixed seat, and the second connection end is connected to the driving part.

[0007] In a preferred embodiment, the driving part includes a driving cylinder, a support, and a Y-shaped pin connected to the piston rod end of the driving cylinder. One end of the driving cylinder is hinged to the support, and the Y-shaped pin is hinged to one end of the connecting rod seat.

[0008] In a preferred embodiment, the support is fixedly connected to the bottom end of the bearing plate, and the bearing plate is provided with long strip through holes at positions corresponding to the connecting rod seat and the output end of the driving part. Such a setting can make more reasonable use of space, prevent interference between the driving cylinder and the shock absorption part, and at the same time, the long strip through holes can also provide a moving space for the second connecting end of the connecting rod seat.

[0009] In a preferred embodiment, the shock absorption part further includes a blocking part connected above the bearing plate. The blocking part is provided with an L-shaped partition structure matching the side edge of the connecting rod seat. The blocking part is configured to provide support for the back side of the connecting rod seat in the state where the cover body is opened, so as to prevent damage to the cylinder or nitrogen cylinder caused by excessive movement stroke during the opening process of the cover body.

[0010] In a preferred embodiment, the bearing plate is further connected with a support rod. The top end of the support rod abuts against the blocking part to enhance the support stability of the blocking part.

[0011] On the other hand, the present utility model also provides a vacuum eutectic furnace, which includes a furnace cavity and a cover body, and further includes the cover body opening and closing device described in any one of the above solutions.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1) The cover body opening and closing device for a large vacuum furnace provided by the present utility model is provided with a hinged opening and closing structure between the furnace cavity and the cover body, and is controlled by a driving part and a nitrogen cylinder shock absorption part, so that its opening and closing force is more uniform and stable, effectively reducing the transmission of vibration, and further ensuring the accuracy of the product position in the furnace cavity;

[0014] 2) By respectively arranging the driving part and the shock absorption part into two groups, synchronous driving and shock absorption of the connecting rod seats on both sides can be realized. With force applied on both sides simultaneously, the cover body can be more evenly stressed, improving its opening and closing stability;

[0015] 3) The shock absorption part adopts a nitrogen cylinder, which has a simple connection relationship and low failure rate. Its vertical space cooperation with the driving part can make more reasonable use of space, making the overall device more concise. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the cover body opening and closing device for a large vacuum furnace in an embodiment of the present utility model;

[0017] Figure 2 It is a top view of the cover body opening and closing device for a large vacuum furnace in an embodiment of the present utility model;

[0018] Figure 3 It is a right view of the cover body opening and closing device for a large vacuum furnace in an embodiment of the present utility model;

[0019] Figure 4 This is a schematic structural view of the connecting rod seat in the embodiment of the present utility model;

[0020] Figure 5 This is a schematic view of the mating structure of the connecting rod seat and the blocking member in the embodiment of the present utility model.

[0021] The meanings of the various reference numerals in the figure are as follows:

[0022] 1. Furnace cavity; 2. Cover body; 3. Bearing plate; 31. Long strip through hole; 4. Fixed seat; 5. Connecting rod seat; 51. First connection end; 52. Hinge end; 53. Second connection end; 6. Driving part; 61. Driving cylinder; 62. Support; 63. Y-shaped pin; 7. Damping part; 71. Nitrogen cylinder; 72. Mounting seat; 73. Blocking member; 74. Support rod. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] See Figures 1 - 3 , this embodiment discloses a cover opening and closing device for a large vacuum furnace, which is used to control the opening and closing state of the cover of a vacuum eutectic furnace, so that it covers the furnace cavity 1 to form a sealed cavity or opens from the furnace cavity 1.

[0026] The vacuum eutectic furnace is provided with a bearing plate 3, and the furnace cavity 1 is seated on the bearing plate 3.

[0027] The cover opening and closing device includes a fixed seat 4 fixedly connected to the end position of the furnace cavity 1, and a connecting rod seat 5 fixedly connected to the end position of the cover 2. The position of the connecting rod seat 5 corresponds to that of the fixed seat 4, and the connecting rod seat 5 is hinged to the fixed seat 4 and is configured to drive the opening and closing of the cover 2 through the hinged movement of the connecting rod seat 5. Correspondingly, the cover opening and closing device further includes a driving part 6 for driving the movement of the connecting rod seat 5 and a shock absorption part 7 for damping the movement of the connecting rod seat 5.

[0028] Specifically, two groups of fixed seats 4 are provided and are respectively connected to the two end positions of the furnace cavity 1. Similarly, two groups of connecting rod seats 5 are also provided and are respectively connected to the two end positions of the cover 2. More specifically, in combination with Figure 4 , the connecting rod seat 5 includes a first connection end 51, a second connection end 53, and a hinged end 52 located between the two connection ends. The cover 2 is connected through the first connection end 51, is hinged to the fixed seat 4 through the hinged end 52, and is connected to the driving part 6 through the second connection end 53.

[0029] In this embodiment, the driving part 6 and the shock absorption part 7 are respectively provided in two groups to realize synchronous driving and shock absorption of the connecting rod seats 5 on both sides. With force applied simultaneously on both sides, the cover 2 can be more evenly stressed, improving its opening and closing stability.

[0030] As Figure 1 , Figure 3 shown, the driving part 6 is connected to the bearing plate 3 and includes a driving cylinder 61, a support 62 for connecting it to the bearing plate 3, and a Y-shaped pin 63 connected to the piston rod end of the driving cylinder 61. To make more reasonable use of space and prevent interference between the driving cylinder 61 and the shock absorption part 7, in this embodiment, the support 62 is fixedly connected to the bottom end of the bearing plate 3. One end of the driving cylinder 61 is hinged to the support 62, and the Y-shaped pin 63 at the other end is hinged to the second connection end 53 of the connecting rod seat 5. To facilitate the connection of the driving part 6 to the second connection end 53 of the connecting rod seat 5, in this embodiment, the bearing plate 3 is provided with a long strip through hole 31 at the position corresponding to the second connection end 53 of the connecting rod seat 5 and the output end of the driving part 6. The long strip through hole 31 can also provide a moving space for the second connection end 53 of the connecting rod seat 5.

[0031] In other embodiments not shown, the driving part 6 can also adopt driving structures such as oil cylinders and electric cylinders.

[0032] Continue to refer to Figure 1, the shock-absorbing part 7 is also connected to the bearing plate 3. The shock-absorbing part 7 includes a nitrogen cylinder 71 and a mounting seat 72 for connecting it to the bearing plate 3. In this embodiment, the mounting seat 72 is fixedly connected to the top of the bearing plate 3. One end of the nitrogen cylinder 71 is hinged to the mounting seat 72, and the other end is hinged to the connecting rod seat 5. This hinged position is arranged between the second connecting end 53 and the hinged end 52 of the connecting rod seat 5. By providing the shock-absorbing part 7, it can effectively prevent the heavy cover 2 from impacting the furnace cavity 1 during the covering process. The shock-absorbing part 7 further adopts a nitrogen cylinder 71, which not only has a simple structure and simple connection, but also can effectively utilize the space in cooperation with the driving part 6 in the upper and lower spaces. At the same time, the nitrogen cylinder 71 has a linear force transmission, and its force is more uniform than that of traditional ordinary elastic parts, which can effectively reduce the transmission of vibration and enable the cover 2 to cover and move more smoothly.

[0033] In a preferred embodiment, in combination with Figure 3 , Figure 5 , the shock-absorbing part 7 further includes a blocking part 73 fixedly connected to the bearing plate 3. The blocking part 73 corresponds to the position of the connecting rod seat 5 and has a predetermined height. The blocking part 73 is provided with an L-shaped blocking structure matching the side edge of the first connecting end 51. When the cover 2 is in the open state, the blocking part 73 provides support for the connecting rod seat 5 on its back side, thereby reducing the loss of the cylinder and preventing damage to the cylinder or the nitrogen cylinder 71 caused by excessive movement stroke during the opening process of the cover 2. Preferably, to strengthen the support stability of the blocking part 73, a support rod 74 for supporting the blocking part 73 is also fixedly connected to the bearing plate 3, and the top end of the support rod 74 abuts against the blocking part 73.

[0034] The cover opening and closing device for a large eutectic furnace provided in this embodiment respectively sets a fixed seat 4 and a connecting rod seat 5 that are hinged to each other on the structures of the furnace cavity 1 and the cover 2, and controls the hinged movement of the connecting rod seat 5 through the driving part 6 and the shock-absorbing part 7 of the nitrogen cylinder 71, so that its opening and closing force is more uniform and stable, effectively reducing the transmission of vibration, and then ensuring the accuracy of the product position in the furnace cavity 1. At the same time, the connection relationship of the nitrogen cylinder 71 is simple. Compared with the complex connection relationship of traditional ordinary elastic parts, its failure rate is lower. It cooperates with the driving part 6 in the upper and lower spaces, makes more reasonable use of the space, and makes the overall device more concise.

[0035] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cover opening and closing device for a large vacuum furnace, characterized in that, Including: A fixed seat (4) connected to the end position of the furnace cavity (1), and a connecting rod seat (5) connected to the end position of the cover body (2), the connecting rod seat (5) being hinged to the fixed seat (4); A driving part (6) connected to the bearing plate (3), the output end of the driving part (6) being hinged to one end of the connecting rod seat (5); A shock absorption part (7), including a nitrogen cylinder (71) and a mounting seat (72) for connecting the nitrogen cylinder (71) to the bearing plate (3), one end of the nitrogen cylinder (71) being hinged to the mounting seat (72) and the other end being hinged to the connecting rod seat (5).

2. The cover opening and closing device for a large vacuum furnace according to claim 1, wherein The driving part (6) and the shock absorption part (7) are respectively arranged in two groups, and are respectively used for driving and shock-absorbing the connecting rod seats (5) on both sides of the cover body (2).

3. The cover opening and closing device for a large vacuum furnace according to claim 1, characterized in that, The connecting rod seat (5) includes a first connecting end (51), a second connecting end (53) and a hinge end (52) located between the two connecting ends, the first connecting end (51) being connected to the cover body (2), the hinge end (52) being hinged to the fixed seat (4), and the second connecting end (53) being connected to the driving part (6).

4. The cover opening and closing device for a large vacuum furnace according to claim 1, characterized in that, The driving part (6) includes a driving cylinder (61), a support seat (62), and a Y-shaped pin (63) connected to the piston rod end of the driving cylinder (61), one end of the driving cylinder (61) being hinged to the support seat (62), and the Y-shaped pin (63) being hinged to one end of the connecting rod seat (5).

5. The cover opening and closing device for a large vacuum furnace according to claim 4, characterized in that, The support seat (62) is fixedly connected to the bottom end of the bearing plate (3), and the bearing plate (3) is provided with a long strip through hole (31) at a position corresponding to the connecting rod seat (5) and the output end of the driving part (6).

6. The cover opening and closing device for a large vacuum furnace according to claim 1, characterized in that, The shock absorption part (7) further includes a blocking part (73) connected above the bearing plate (3), the blocking part (73) being provided with an L-shaped partition structure matching the side edge of the connecting rod seat (5), and the blocking part (73) being configured to provide support for the connecting rod seat (5) on its back side in the open state of the cover body (2).

7. The cover opening and closing device for a large vacuum furnace according to claim 6, wherein, The bearing plate (3) is further connected with a support rod (74), and the top end of the support rod (74) abuts against the blocking part (73).

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