TWM461631U - Furnace door open/close mechanism - Google Patents

Description

Furnace door opening and closing mechanism

The present invention relates to a door opening and closing mechanism, and particularly relates to a door opening and closing mechanism which has good sealing property and can reduce gas leakage.

In the manufacturing process of the LCD glass, after the photoresist glass layer is coated with the photoresist layer, it is usually sent to the oven for baking and heating, thereby removing the solvent remaining in the photoresist layer and converting the photoresist layer from the liquid state into The solid state increases the adhesion effect.

Referring to FIG. 1, a schematic cross-sectional view of an existing oven 1 for baking an LCD glass substrate is shown. The oven 1 includes a furnace body 11, a plurality of furnace ports 10 communicating with the inside and outside of the furnace body 11, and a plurality of furnace doors 12 that respectively openably close the furnace ports 10. When the LCD glass substrate is to be fed into the furnace body 11 for baking, the furnace doors 12 are rotated outward by the control of the corresponding hinges 13 to open the furnace opening 10, so that the LCD glass substrate 14 can smoothly pass through the furnace opening 10. It is conveyed to the inside of the furnace body 11 for baking.

However, since the furnace door 12 of the existing oven 1 is opened in a rotating manner, it is necessary to reserve a space at the joint of the edge of the furnace opening 10 and the furnace door 12 for the rotation of the furnace door 12 to prevent the furnace door 12 and the furnace body 11 from mutually interacting with each other. put one's oar in. This knot that pre-retains space at the junction of the edge of the furnace opening 10 and the furnace door 12 The sealing function of the furnace door 12 and the furnace body 11 when the furnace door 12 is closed is reduced; in addition, the sealing force of the furnace door 12 at one end away from the hinge 13 and the furnace body 11 is small, so that the sealing effect of the furnace door 12 is not Preferably, after long-term use, the sealing of the furnace door 12 is incomplete, resulting in leakage of hot air in the furnace body 11, which affects the quality of the baking operation and reduces the production yield of the LCD glass.

Therefore, the object of the present invention is to provide a door opening and closing mechanism having a good sealing property.

Another object of the present invention is to provide a door opening and closing mechanism that can reduce the leakage of hot air when the workpiece in the oven is taken out.

Therefore, the novel door opening and closing mechanism is suitable for use with a furnace body of an oven, and a furnace mouth connecting the inside and the outside of the oven is formed on a furnace wall of the furnace body. The door opening and closing mechanism comprises a large furnace door, a large furnace door driving unit, at least one small furnace door, and at least one small furnace door driving unit.

The large furnace door can openly close the mouth of the furnace and form at least one small furnace mouth connecting the inside and the outside of the oven. The large furnace door driving unit is connected with the large furnace door and the furnace body for driving the large furnace door to be displaced relative to the large furnace mouth in the direction perpendicular to the furnace wall, and can drive the large furnace door to be displaced relative to the large furnace mouth along the parallel furnace wall. . The small furnace door can open the small furnace mouth open. The small furnace door driving unit is connected with the small furnace door and the large furnace door for driving the small furnace door to be displaced relative to the small furnace mouth in the direction of the vertical large furnace door, and can drive the small furnace door in the direction of the parallel large furnace door relative to the small furnace Mouth displacement.

Preferably, the large door drive unit comprises at least two first pressing modules and two first translation modules. The first pressing modules are respectively connected The two first translation modules are used to drive the furnace door to be displaced in the direction of the vertical furnace wall. The first translation module is used to drive the displacement of the large furnace door in the direction parallel to the furnace wall.

Preferably, the first pressing module is connected to the large furnace door for driving the large furnace door to be displaced along the vertical furnace wall with respect to the first translation module; the first translation module is connected to the furnace body for driving the first pressing The module and the furnace door are displaced relative to the furnace body in the direction parallel to the furnace wall.

Preferably, each of the first pressing modules has a driving assembly and a guiding assembly. The driving components of each of the first pressing modules are connected to the furnace door and the corresponding first translation module, and generate power to drive the furnace door to be displaced relative to the first translation modules. The guiding assembly of each of the first pressing modules is connected to the large furnace door and the corresponding first translation module to guide the large furnace door to be displaced only in the direction of the vertical furnace wall.

Preferably, each of the first translation modules has a first linkage, a drive assembly, and a guide assembly. The first linkage is connected to the corresponding first pressing module. The driving assembly of each of the first translation modules is coupled to the first linkage frame and the furnace body, and generates power to drive the displacement of the first linkage frame relative to the furnace body, and simultaneously connects the corresponding first pressing module and the large furnace through the first linkage frame Door displacement. The guiding assembly of each of the first translation modules is connected to the first linkage frame and the furnace body to guide the first compression module corresponding to the first linkage frame and the large furnace door to be displaced only in the direction parallel to the furnace wall.

Preferably, the driving components of each of the first pressing modules are cylinders; and the guiding components of the first pressing modules are sliding rails extending perpendicular to the furnace wall. The driving components of each of the first translation modules are parallel to the furnace wall and are provided with a motor roll The bead screw; the guiding assembly of each of the first translation modules is a sliding rail extending parallel to the furnace wall.

Preferably, the small furnace door driving unit comprises two second pressing modules and a second translation module. The second pressing module is connected to the second translation module and is used for driving the small furnace door to be displaced in the direction of the vertical furnace door. The second translation module is used to drive the small furnace door to be displaced in the direction of the parallel furnace door.

Preferably, the second pressing module is connected to the small furnace door for driving the small furnace door to be displaced relative to the second translation module in the direction of the vertical large furnace door. The second translation module is connected to the large furnace door for driving the second pressing module and the small furnace door to be displaced relative to the large furnace door in the direction of the parallel large furnace door.

Preferably, each of the second pressing modules has a driving assembly and a guiding assembly. The driving component of the second pressing module is connected to the small furnace door and the second translation module, and generates a power to drive the small furnace door to be displaced relative to the second translation module. The guiding assembly of the second pressing module connects the small furnace door and the second translation module to guide the small furnace door to be displaced only in the direction of the vertical large furnace door.

Preferably, the second translation module has a second linkage frame, two driving components, and two guiding components respectively corresponding to the driving components of the second translation module. The second linkage is configured to be coupled to the second pressing module. Each driving component of the second translation module is connected to the second linkage frame and the large furnace door, and generates power to drive the second linkage frame relative to the large door displacement, and simultaneously interlocks the second pressing modules through the second linkage frame The small furnace door displacement. Each guiding component of the second translation module is connected to the second linkage frame and the large furnace door to guide the second linkage frame to interlock the second pressing module and the small furnace door is only displaced in the direction of the parallel large furnace door .

Preferably, the driving components of each of the second pressing module and the second translation module are cylinders. The guiding assembly of each second pressing module is a sliding rail extending perpendicular to the large furnace door. The guiding components of each of the second translation modules are sliding rails extending parallel to the large furnace door.

Preferably, the large furnace door forms two small furnace ports. The furnace door opening and closing mechanism comprises two small furnace doors respectively closing the two small furnace mouths, and two small furnace door driving units respectively corresponding to the small furnace doors.

The utility model has the advantages that the driving of the large furnace door driving unit enables the large furnace door to be displaced relative to the large furnace mouth along the direction of the vertical furnace wall and the direction parallel to the furnace wall; and the driving of the small furnace door driving unit enables The small furnace door can be displaced relative to the small furnace mouth in the direction of the vertical furnace door and the direction of the parallel furnace door; thereby the large furnace mouth and the small furnace mouth are opened without rotation, so it is not necessary to be at the edge of the large and small furnace mouths. The joints of the large and small furnace doors retain a space for rotation, and compactly close the large and small furnace openings to improve the overall sealing of the oven. In addition, the large furnace door can be parallel to the displacement of the furnace wall, so that the small furnace mouth on the large furnace door can change position to correspond to each work in the oven, and only a small furnace mouth needs to be opened to take out the required work. Reduce the leakage of hot air in the oven.

2‧‧‧ oven

21‧‧‧ furnace body

22‧‧‧ furnace wall

23‧‧‧Boiler mouth

3‧‧‧ Large furnace door

31‧‧‧Small furnace mouth

4‧‧‧ Large furnace door drive unit

41‧‧‧First pressing module

411‧‧‧Drive components

412‧‧‧Guide components

42‧‧‧First translation module

421‧‧‧First linkage

422‧‧‧Drive components

423‧‧‧Guide components

5‧‧‧ small furnace door

6‧‧‧Small door drive unit

61‧‧‧Second pressing module

611‧‧‧Drive components

612‧‧‧Guide components

62‧‧‧Second translation module

621‧‧‧Second linkage

622‧‧‧Drive components

623‧‧‧Guide components

71,72,73,74‧‧‧Works

Other features and advantages of the present invention will be apparent from the detailed description of the preferred embodiments illustrated in the accompanying drawings in which: FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a cross-sectional view showing a large furnace door closing a large furnace mouth; Figure 4a is a view similar to Figure 3, illustrating the furnace door being displaced away from the furnace mouth in a direction perpendicular to a furnace wall; Figure 4b is a view similar to Figure 3, illustrating the furnace door parallel to the furnace wall The directional displacement causes a small furnace mouth to align with the work object; FIG. 5 is a view similar to FIG. 3, illustrating that the large furnace door is displaced in a direction perpendicular to the furnace wall to close the large furnace mouth; FIG. 6 is a schematic cross-sectional view. The small furnace door is closed to the corresponding small furnace mouth; FIG. 7a is a view similar to FIG. 6 , illustrating that a small furnace door is displaced away from the small furnace mouth in a direction perpendicular to the large furnace door; and FIG. 7b is a similar to FIG. The view indicates that the small furnace door is displaced in a direction parallel to the large furnace door to open the corresponding small furnace mouth.

Referring to Figures 2 and 3, a preferred embodiment of the novel door opening and closing mechanism is shown. The furnace door opening and closing mechanism is suitable for use with the furnace body 21 of an oven 2, and a furnace wall 22 of the furnace body 21 forms a large furnace mouth 23 connecting the inside and the outside of the oven 2, and the inside of the oven 2 can be accommodated for baking. A plurality of work items 71, 72, 73 and 74. The furnace door opening and closing mechanism comprises a large furnace door 3, a large furnace door drive unit 4, two small furnace doors 5, and two small furnace door drive units 6. The large furnace door 3 can openly close the large furnace opening 23 and form two small furnace ports 31 which communicate the inside and the outside of the oven 2. The large furnace door drive unit 4 is for connecting the large furnace door 3 and the furnace body 21. The two small furnace doors 5 respectively open the two small furnace openings 31. The two small furnace door drive units 6 respectively connect the two small furnace doors 5 and the large furnace door 3.

The large door drive unit 4 includes four first and second pressing modules 41 which are installed in pairs on the left and right sides of the large furnace door 3 (only the pairs are shown in the figure) One), and two first translation modules 42 symmetrically located on the left and right sides of the large furnace door 3 (only one of which is shown). Each of the first pressing modules 41 has a driving assembly 411 and a guiding assembly 412. The driving assembly 411 of each first pressing module 41 is connected to the large furnace door 3 and the first translation module 42 on the same side, and is used for generating the power driving the large furnace door 3 with respect to the first translation module 42 and the large furnace mouth 23 Displaced in the direction X of the vertical furnace wall 22 (see Figure 4a). The guiding component 412 of each of the first pressing modules 41 is disposed adjacent to the driving component 411 of the first pressing module 41, and connects the large furnace door 3 and the first translation module 42 of the same side to guide the furnace door. 3 is only displaced in the direction X of the vertical furnace wall 22.

Each of the first translation modules 42 has a first linkage 421, a drive assembly 422, and a guide assembly 423. The first linkages 421 of the two first translation modules 42 are respectively disposed on the left and right sides of the large furnace door 3 (only one of which is shown in the figure), and are connected to the first pressing module 41 on the same side. The driving component 422 of the first translation module 42 connects the first linkage frame 421 and the furnace body 21, and generates a power to drive the first linkage frame 421 to be displaced relative to the furnace body 21 in the direction parallel to the furnace wall 22, while transmitting through the two first The linkage frame 421 moves the first pressing module 41 and the large furnace door 3 relative to the large furnace opening 23 in the direction Y of the parallel furnace wall 22 (see Fig. 4b). The guiding assembly 423 of the first translation module 42 connects the first linking frame 421 and the furnace body 21 to guide the first linking frame 421 to link the first pressing module 41 and the large furnace door 3 only in the direction parallel to the furnace wall 22. Y displacement.

In the preferred embodiment, the driving assembly 411 of the first pressing module 41 is a cylinder disposed on the left and right sides of the large furnace door 3. The guiding assemblies 412 of the first pressing module 41 are installed in the first two. Linking frame 421 and vertical furnace wall 22 extended rails. The driving assembly 422 of the first translation module 42 is a ball screw extending parallel to the furnace wall 22 and equipped with a motor. The guiding assembly 423 of the first translation module 42 is parallel to the furnace wall 22 on the left and right sides of the large furnace door 3. Extended rails. Of course, the driving component 411 of the first pressing module 41 and the driving component 422 of the first translation module 42 are not limited to the embodiment disclosed in the embodiment, and may be a hydraulic cylinder or any component capable of generating power. It only needs to be able to drive the first pressing module 41 and the first translation module 42 to operate. In addition, in the actual application, the number of the first pressing modules 41 may also be set to be two to respectively connect the two first translation modules 42 respectively, which is not limited to the four shown in this embodiment.

Each of the small door drive units 6 includes two second pressing modules 61 (only one of which is shown) and a second translation module 62. The two second pressing modules 61 are laterally arranged side by side on the side of the small furnace door 5 opposite to the small furnace opening 31, and each has a driving assembly 611 and a guiding assembly 612. The driving component 611 of the second pressing module 61 is connected to the corresponding small furnace door 5 and the second translation module 62, and generates a power driving small furnace door 5 with respect to the second translation module 62 and the small furnace mouth 31 along the vertical furnace door. The direction X displacement of 3 (see Figure 7a). The guiding component 612 of the second pressing module 61 is disposed adjacent to the driving component 611 of the second pressing module 61, and is connected to the corresponding small furnace door 5 and the second translation module 62 to guide the small furnace door 5 It is displaced only in the direction X of the vertical furnace door 3.

Each of the second translation modules 62 has a second linkage 621, two drive assemblies 622 (only one of which is shown), and two guide assemblies 623 that respectively correspond to the two drive assemblies 622. The second linkage frame 621 is located on a side of the small furnace door 5 opposite to the small furnace opening 31, and is used for the second pressing module 61. connection. The two driving components 622 of the second translation module 62 are symmetrically located on the left and right sides of the small furnace door 5 to connect the second linkage frame 621 and the large furnace door 3, and generate power to drive the second linkage frame 621 along the parallel furnace door 3. The direction Y displacement is simultaneously shifted by the second linkage frame 621 to move the second pressing module 61 and the small furnace door 5 relative to the large furnace door 3 and the small furnace opening 31 in the direction Y of the parallel large furnace door 3. The two guiding components 623 of the second translation module 62 are disposed adjacent to the two driving components 622 of the second translation module 62, and are connected to the second linkage frame 621 and the large furnace door 3 to guide the linkage of the second linkage frame 621. The second pressing module 61 and the small furnace door 5 are displaced only in the direction Y parallel to the large furnace door 3 (see Fig. 7b).

In the preferred embodiment, the driving assemblies 611, 622 of the second pressing module 61 and the second translation module 62 are cylinders. The two guiding assemblies 612 of the second pressing module 61 are sliding rails that are installed on the second linkage frame 621 and extend perpendicular to the large furnace door 3. The two guiding assemblies 623 of the second translation module 62 are sliding rails that are mounted on the large furnace door 3 and extend parallel to the large furnace door 3. It is easy to understand that each of the driving components 611, 622 is not limited to a cylinder, and any component that can generate power to drive the second pressing module 61 and the second translation module 62 is an equivalent aspect of the creation.

Referring to FIGS. 3 to 5, when it is necessary to take out the workpiece 71 located at a specific position in the oven 2, the first pressing module 41 of the large door driving unit 4 drives the direction of the large door 3 along the vertical furnace wall X. Displaced away from the furnace mouth 23 (as shown in Figure 4a), the furnace door 3 is no longer tightly pressed against the furnace wall 22 and can be displaced up and down with respect to the furnace wall 22; then the first translation of the large furnace door drive unit 4 is utilized. The module 42 drives the large furnace door 3 to be displaced in the direction Y of the parallel furnace wall 22 (as shown in Fig. 4b), so that the position of one of the small furnace ports 31 on the large furnace door 3 is opposite. The small furnace mouth 31 and the workpiece 71 are aligned in the work object 71 to be taken out. After the alignment of the small furnace opening 31, the large furnace door 3 is displaced by the driving of the first pressing module 41 along the direction X of the vertical furnace wall 22 toward the large furnace opening 23 (as shown in FIG. 5), so that the large furnace door 3 is large. The furnace door 3 is returned to the closed state in which the furnace wall 22 is tightly pressed to close the furnace opening 23. It should be emphasized that the number of the small furnace opening 31, the corresponding small furnace door 5, and the small furnace door driving unit 6 on the large furnace door 3 is not limited to the two disclosed in the embodiment, and may be set to one. Three or more, it is only necessary to make the small furnace mouth 31 be able to align with the workpiece at a specific position as the furnace door 3 is displaced.

Referring to FIG. 6 and FIG. 7, after a small furnace mouth 31 and the working object 71 are aligned, the second pressing module 61 of the small furnace door driving unit 6 drives the small furnace door 5 in the direction of the vertical large furnace door 3. X is displaced away from the small furnace opening 31 (as shown in Fig. 7a), so that the small furnace door 5 is no longer tightly pressed against the large furnace door 3 and can be displaced up and down with respect to the large furnace door 3; then the small furnace door driving unit 6 is reused. The second translation module 62 drives the small furnace door 5 to displace in the direction Y of the parallel furnace door 3 and no longer shields the small furnace opening 31 (as shown in FIG. 7b and FIG. 2), so that the position corresponds to the workpiece 71. The opening of the small furnace opening 31 allows the workpiece 71 to be smoothly taken out through the small furnace opening 31. After the work object 71 is taken out, the second translation module 62 and the second pressing module 61 are sequentially driven to drive the small furnace door 5 parallel and vertical furnace door 3 displacement, and the small furnace door 5 is returned to the tightly closed small furnace. The state of port 31.

In summary, the driving of the large furnace door driving unit 4 enables the large furnace door 3 to be displaced along the direction of the vertical furnace wall 22 and the parallel furnace wall 22 by X, Y; and the small furnace door driving unit 6 can drive the small furnace door 5 along the vertical furnace door 3 And the direction X and Y displacement of the parallel furnace door 3, so that the large furnace door 3 and the small furnace door 5 are opened in a non-rotating manner, and it is not necessary to reserve the furnace door at the edge of the large furnace mouth 23 and the small furnace mouth 31 3 The space in which the small furnace door 5 rotates enhances the sealing of the large furnace door 3 and the small furnace door 5. In addition, the first pressing module 41 and the second pressing module 61 can respectively press the large furnace door 3 and the small furnace door 5 tightly on the furnace wall 22 and the large furnace door 3, so that the large furnace door 3 and the small furnace door 5 are It is not easy to cause gas leakage and improve the quality of the baking work of the oven 2. In addition, the furnace door 3 can be moved up and down in parallel through the furnace door 3, so that the small furnace mouth 31 formed on the large furnace door 3 can be changed in position to correspond to the work at different positions in the oven 2, so that the work at the specific position is taken out. When the object is only needed to open the corresponding small furnace mouth 31, the heat gas leakage in the oven 2 is greatly reduced, so the purpose of the novel can be achieved.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

3‧‧‧ Large furnace door

31‧‧‧Small furnace mouth

4‧‧‧ Large furnace door drive unit

41‧‧‧First pressing module

411‧‧‧Drive components

412‧‧‧Guide components

42‧‧‧First translation module

421‧‧‧First linkage

422‧‧‧Drive components

423‧‧‧Guide components

5‧‧‧ small furnace door

6‧‧‧Small door drive unit

61‧‧‧Second pressing module

611‧‧‧Drive components

612‧‧‧Guide components

62‧‧‧Second translation module

621‧‧‧Second linkage

622‧‧‧Drive components

623‧‧‧Guide components

Claims (12)

The utility model relates to a furnace door opening and closing mechanism, which is suitable for use with a furnace body of an oven, wherein a furnace wall of the furnace body forms a large furnace mouth connecting the inside and the outside of the oven, the furnace door opening and closing mechanism comprises: a large furnace door Openably closing the large furnace mouth and forming at least one small furnace mouth connecting the inside and the outside of the oven; a large furnace door driving unit connecting the large furnace door and the furnace body for driving the large furnace door Displacement relative to the large furnace mouth in a direction perpendicular to the furnace wall, and can drive the large furnace door to be displaced relative to the large furnace mouth in a direction parallel to the furnace wall; at least one small furnace door can openly close the small furnace mouth And at least a small furnace door driving unit connecting the small furnace door and the large furnace door for driving the small furnace door to be displaced relative to the small furnace mouth in a direction perpendicular to the large furnace door, and capable of driving the small furnace The door is displaced relative to the small furnace port in a direction parallel to the large furnace door. The door opening and closing mechanism of claim 1, wherein the large door driving unit comprises at least two first pressing modules and two first translation modules; and the first pressing modules respectively connect the two first Translating the module and driving the furnace door to move in a direction perpendicular to the furnace wall; the first translation module is configured to drive the furnace door to be displaced in a direction parallel to the furnace wall. The door opening and closing mechanism of claim 2, wherein the first pressing module is connected to the large furnace door for driving the large furnace door to be displaced relative to the first translation module in a direction perpendicular to the furnace wall The first translation The module is coupled to the furnace body for driving the first pressing module and the large furnace door to be displaced relative to the furnace body in a direction parallel to the furnace wall. The door opening and closing mechanism of claim 3, wherein each of the first pressing modules has a driving assembly and a guiding assembly; the driving assembly of each of the first pressing modules is connected to the large furnace door and the corresponding first translation a module, and generating power to drive the furnace door to be displaced relative to the first translation module; the guiding assembly of each first pressing module is connected to the furnace door and the corresponding first translation module to guide the large The furnace door is only displaced in a direction perpendicular to the furnace wall. The door opening and closing mechanism of claim 4, wherein each of the first translation modules has a first linkage frame, a driving component, and a guiding component; the first linking frame and the corresponding first pressing module a driving assembly of the first translation module is coupled to the first linkage frame and the furnace body, and generates power to drive the first linkage frame to be displaced relative to the furnace body, and simultaneously transmits a corresponding first pressing through the first linkage frame The module and the furnace door displacement; the guiding component of the first translation module is connected to the first linkage frame and the furnace body to guide the first linkage frame to link the corresponding first pressing module and the large furnace The door is only displaced in a direction parallel to the furnace wall. The door opening and closing mechanism of claim 5, wherein the driving components of the first pressing modules are cylinders; the guiding assemblies of the first pressing modules are sliding rails extending perpendicular to the furnace wall; The driving component of the first translation module is a ball screw extending parallel to the furnace wall and equipped with a motor; the guiding components of the first translation module are extended parallel to the furnace wall Slide rails. The door opening and closing mechanism of claim 1, wherein the small door driving unit comprises two second pressing modules and a second translation module; the second pressing modules are connected to the second translation module. And driving the small furnace door to move in a direction perpendicular to the large furnace door; the second translation module is configured to drive the small furnace door to be displaced in a direction parallel to the large furnace door. The door opening and closing mechanism of claim 7, wherein the second pressing module is connected to the small furnace door for driving the small furnace door in a direction perpendicular to the large furnace door with respect to the second translation module Displacement; the second translation module is coupled to the furnace door for driving the second pressing module and the small furnace door to be displaced relative to the large furnace door in a direction parallel to the large furnace door. The door opening and closing mechanism of claim 8, wherein each of the second pressing modules has a driving assembly and a guiding assembly; the driving assembly of the second pressing module is connected to the small furnace door and the second translation module And driving to drive the small furnace door to be displaced relative to the second translation module; the guiding assembly of the second pressing module is connected to the small furnace door and the second translation module to guide the small furnace door only Displaces in the direction perpendicular to the furnace door. The door opening and closing mechanism of claim 9, wherein the second translation module has a second linkage frame, two driving components, and two guiding assemblies respectively corresponding to the driving components of the second translation module; The second linkage is connected to the second pressing module; each driving component of the second translation module is connected to the second linkage and the large furnace door, and generates power to drive the second linkage relative to the furnace Door displacement, through the same The second linkage frame is coupled to the second pressing module and the small furnace door displacement; each guiding component of the second translation module is connected to the second linkage frame and the large furnace door to guide the second linkage The second compression module and the small furnace door are interlocked only in a direction parallel to the large furnace door. The door opening and closing mechanism of claim 10, wherein the driving components of each of the second pressing module and the second translation module are cylinders; and the guiding assemblies of the second pressing modules are perpendicular to the furnace door The guide rails of the second translation module are slide rails extending parallel to the furnace door. The door opening and closing mechanism of claim 11, wherein the large furnace door forms two small furnace mouths; the furnace door opening and closing mechanism comprises two small furnace doors respectively closing the two small furnace mouths, and two corresponding corresponding Small furnace door drive unit for each small furnace door.