Large-stroke oven door mechanism

Abstract

The large-stroke oven door mechanism comprises a door frame and a door plate assembly, the door frame comprises two door columns and a top beam, cavities are formed in the door columns, the door plate assembly comprises a door plate and a plurality of connecting shafts, an opening and closing driving mechanism is arranged on the door columns, and the opening and closing driving mechanism comprises a guide mechanism and a pull-up mechanism. The guide mechanism comprises a fixed guide rail and a movable guide rail, a plurality of connecting rods are hinged in the cavity side by side, one end of each connecting rod is hinged to one side face of the movable guide rail, and a first guide groove and a second guide groove are formed in the inner side face of the fixed guide rail and the inner side face of the movable guide rail respectively. One end of the connecting shaft passes through the first receding window and is movably arranged between the first guide groove and the second guide groove, a limiting block for closing the top end of the second guide groove is arranged at the top end of the movable guide rail, and the lifting mechanism can apply upward pulling force to the door plate, so that serial actions of lifting and closing of the door plate can be achieved. And the device can be used for occasions with relatively crowded space.

Description

Technical Field

[0001] This utility model relates to the field of oven door technology, and more particularly to a long-stroke oven door mechanism. Background Technology

[0002] An industrial oven is a device used for baking and heating products. Ovens are equipped with a baking chamber and an oven door. The oven door needs to be closed during baking and opened when loading or unloading products. Most existing oven doors are hinged to the front of the baking chamber, requiring the door to open forward. Sufficient space needs to be left for the door to open, making it unsuitable for spaces with limited capacity. Summary of the Invention

[0003] The problem to be solved by this utility model is to provide a large-stroke oven door mechanism that can be used in situations where space is relatively congested.

[0004] To solve the above technical problems, a large-stroke oven door mechanism provided by this utility model is proposed, comprising a door frame and a door panel assembly. The door frame includes two door posts arranged side by side and a top beam connected between the tops of the two door posts. The door posts have cavities inside. The door panel assembly includes a door panel and several connecting shafts arranged side by side on both sides of the door panel. An opening and closing drive mechanism is provided on the door posts. The opening and closing drive mechanism includes a guide mechanism and a lifting mechanism. The guide mechanism includes a fixed guide rail and a movable guide rail. The fixed guide rail is fixedly connected in the cavity. Several connecting rods are hinged side by side in the cavity. One end of the connecting rod is hinged to one side of the movable guide rail. The inner surfaces of the fixed guide rail and the movable guide rail are respectively provided with a first guide groove and a second guide groove. A first clearance window communicating with the cavity is provided through the inner side wall of the door post. One end of the connecting shaft passes through the first clearance window and is movably disposed between the first guide groove and the second guide groove. A limiting block is provided at the top of the movable guide rail to close the top of the second guide groove. The lifting mechanism can apply an upward pulling force to the door panel.

[0005] Preferably, the lifting mechanism includes a longitudinal linear drive device disposed on one side of the gatepost, a movable pulley, a chain, a connecting plate fixedly connected to one side of the top of the gatepost, a first sprocket rotatably connected to the connecting plate, and several second sprockets rotatably connected in the cavity. The longitudinal linear drive device includes an output shaft, the movable pulley is rotatably connected to one end of the output shaft, the chain is connected between the movable pulley, the first sprocket, and the second sprockets, and its two ends are respectively fixedly connected to the bottom of the connecting plate and one of the connecting shafts. A second clearance window communicating with the cavity is provided through one side wall of the gatepost, and the chain passes through the second clearance window.

[0006] Preferably, an axial bearing matching the width of the first guide groove and the second guide groove is axially connected to one end of the connecting shaft, and a radial bearing is radially connected to one end of the connecting shaft. Both the axial bearing and the radial bearing are movably disposed between the first guide groove and the second guide groove.

[0007] Preferably, the longitudinal linear drive device is an electric cylinder.

[0008] Preferably, a third sprocket is rotatably connected to the top of the movable guide rail, a chain is connected to the third sprocket, and one end of the chain is movably disposed on the second guide groove and fixedly connected to the connecting shaft at the highest position on the side of the door panel.

[0009] The beneficial effects of this utility model are as follows: This utility model provides a large-stroke oven door mechanism, which is installed on the front side of the baking chamber of the oven. Initially, the door panel is in the open state under its own weight, and the first guide groove and the second guide groove are in the connected state. When the baking chamber needs to be closed, the lifting mechanism applies an upward pulling force to the door panel, causing it to rise. The connecting shafts on both sides of the door panel move along the first guide groove and enter the second guide groove. When the connecting shaft at the highest point of the door panel contacts the bottom end of the limiting block, the connecting shaft stops moving in the second guide groove. Since the movable guide rail is hinged to the connecting rod, it causes the door panel to sway, resulting in a horizontal displacement towards the baking chamber, thus closing the baking chamber. This achieves a chain action of lifting and closing the door panel. When the baking chamber needs to be opened, the lifting mechanism slowly releases the door panel, causing it to descend under its own weight. The movable guide rail returns to its original position, and the door panel moves horizontally away from the baking chamber, opening the baking chamber. The first and second guide grooves are then connected again, and the connecting shafts on both sides of the door panel move along the second guide groove and enter the first guide groove, returning the door panel to the open state. Its simple structure allows for a chain action of lifting and closing the door panel, making it suitable for spaces with limited space. Attached Figure Description

[0010] Figure 1 A schematic diagram illustrating the structure of the door panel of this utility model in the open state is shown.

[0011] Figure 2 A cross-sectional view of the door panel of this utility model in the open state is shown.

[0012] Figure 3 A schematic diagram illustrating the closed state of the door panel of this utility model is shown.

[0013] Figure 4 A cross-sectional view of the door panel of this utility model in the closed state is shown.

[0014] Figure 5 A rear view of the door panel of this utility model in the closed state is shown.

[0015] Figure 6 An exploded view of the present invention is shown.

[0016] Figure 7 This utility model is illustrated. Figure 6 A magnified schematic diagram of part A in the middle.

[0017] Reference numerals: Door frame 1, Door post 10, First clearance window 100, Second clearance window 101, Top beam 11, Door panel assembly 2, Door panel 20, Connecting shaft 21, Axial bearing 22, Radial bearing 23, Opening and closing drive mechanism 3, Guide mechanism 30, Fixed guide rail 300, First guide groove 300a, Movable guide rail 301, Second guide groove 301a, Connecting rod 302, Limiting block 303, Third sprocket 304, Lifting mechanism 31, Longitudinal linear drive device 310, Movable pulley 311, Chain 312, Connecting plate 313, First sprocket 314, Second sprocket 315. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.

[0019] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0020] refer to Figures 1-7 .

[0021] This utility model provides a long-stroke oven door mechanism, comprising a door frame 1 and a door panel assembly 2. The door frame 1 includes two door posts 10 arranged side by side and a top beam 11 connecting the top ends of the two door posts 10. The door posts 10 have cavities inside. The door panel assembly 2 includes a door panel 20 and several connecting shafts 21 arranged side by side on both sides of the door panel 20. An opening and closing drive mechanism 3 is provided on the door posts 10. The opening and closing drive mechanism 3 includes a guide mechanism 30 and a lifting mechanism 31. The guide mechanism 30 includes a fixed guide rail 300 and a movable guide rail 301. The fixed guide rail 300 is fixedly connected in the cavity. Several connecting rods 3 are hinged side by side in the cavity. 02. One end of the connecting rod 302 is hinged to one side of the movable guide rail 301. The inner sides of the fixed guide rail 300 and the movable guide rail 301 are respectively provided with a first guide groove 300a and a second guide groove 301a. The inner side wall of the door post 10 is provided with a first clearance window 100 communicating with the cavity. One end of the connecting shaft 21 passes through the first clearance window 100 and is movably disposed between the first guide groove 300a and the second guide groove 301a. The top of the movable guide rail 301 is provided with a limiting block 303 that closes the top of the second guide groove 301a. The lifting mechanism 31 can apply an upward pulling force to the door panel 20.

[0022] Its working principle is as follows: The oven door mechanism is installed on the front side of the oven's baking chamber. Initially, the door panel 20 is in the open state under its own weight, and the first guide groove 300a and the second guide groove 301a are in a connected state. When it is necessary to close the baking chamber, the lifting mechanism 31 applies an upward pulling force to the door panel 20, causing the door panel 20 to rise. The connecting shafts 21 on both sides of the door panel 20 will move along the first guide groove 300a and enter the second guide groove 301a. When the connecting shaft 21 at the highest point on the side of the door panel 20 contacts the bottom end of the limiting block 303, the connecting shaft 21 stops moving in the second guide groove 301a. Since the movable guide rail 301 is hinged to the connecting rod 302, the movable guide rail 301 will cause the door panel 20 to swing, and the door panel 20 will produce a horizontal displacement towards the baking chamber side, thereby allowing the door panel to... When the baking chamber is closed, the door panel 20 can achieve a series of actions of lifting and closing. When the baking chamber needs to be opened, the lifting mechanism 31 slowly releases the door panel 20, which will descend under its own gravity. The movable guide rail 301 will return to its original position, and the door panel 20 will move horizontally away from the baking chamber, opening the baking chamber. The first guide groove 300a and the second guide groove 301a will resume communication, and the connecting shafts 21 on both sides of the door panel 20 will move along the second guide groove 301a and enter the first guide groove 300a, returning the door panel 20 to the open state. Its simple structure allows for a series of actions of lifting and closing the door panel 20, making it suitable for use in confined spaces.

[0023] Based on the above embodiments, the lifting mechanism 31 includes a longitudinal linear drive device 310 disposed on one side of the doorpost 10, a movable pulley 311, a chain 312, a connecting plate 313 fixedly connected to the top side of the doorpost 10, a first sprocket 314 rotatably connected to the connecting plate 313, and a plurality of second sprockets 315 rotatably connected in the cavity. The longitudinal linear drive device 310 includes an output shaft, the movable pulley 311 is rotatably connected to one end of the output shaft, the chain 312 is connected between the movable pulley 311, the first sprocket 314, and the second sprockets 315, and its two ends are respectively fixedly connected to the bottom of the connecting plate 313 and one of the connecting shafts 21. A second clearance window 101 communicating with the cavity is provided through one side wall of the doorpost 10, and the chain 312 passes through the second clearance window 101. When the door panel 20 needs to be closed, the longitudinal linear drive device 310 drives the movable pulley 311 downward, and the door panel 20 is pulled upward by the chain 312. The connecting shaft 21 enters the second guide groove 301a from the first guide groove 300a, and the door panel 20 closes the baking chamber. By using the movable pulley to pull the door panel 20, the output shaft of the longitudinal linear drive device 310 only needs to travel half the stroke of the door panel's lifting range, which can reduce the height of the equipment and realize the action of lifting and closing the oven door.

[0024] Based on the above embodiments, an axial bearing 22 matching the width of the first guide groove 300a and the second guide groove 301a is axially connected to one end of the connecting shaft 21, and a radial bearing 23 is radially connected to the other end of the connecting shaft 21. Both the axial bearing 22 and the radial bearing 23 are movably disposed between the first guide groove 300a and the second guide groove 301a. When the connecting shaft 21 moves on the first guide groove 300a and the second guide groove 301a, the axial bearing 22 and the radial bearing 23 will roll along the wall of the first guide groove 300a or the second guide groove 301a, playing a guiding role and improving the smoothness and stability of the door panel 20's movement.

[0025] Based on the above embodiments, the longitudinal linear drive device 310 is an electric cylinder, which has good precision and high working stability.

[0026] Based on the above embodiments, a third sprocket 304 is rotatably connected to the top of the movable guide rail 301. A chain 312 is connected to the third sprocket 304, and one end of the chain is movably disposed on the second guide groove 301a and fixedly connected to the connecting shaft 21 at the highest position on the side of the door panel 20. The chain 312 is introduced into the second guide groove 301a, reducing the interference between the chain 312 and the movable guide rail 301 and improving the smoothness of the chain 312's operation.

[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A long-stroke oven door mechanism, characterized in that, The device includes a door frame and a door panel assembly. The door frame includes two side-by-side doorposts and a top beam connecting the tops of the two doorposts. Each doorpost has an internal cavity. The door panel assembly includes a door panel and several connecting shafts connected side-by-side to the two sides of the door panel. An opening and closing drive mechanism is provided on each doorpost. The opening and closing drive mechanism includes a guide mechanism and a lifting mechanism. The guide mechanism includes a fixed guide rail and a movable guide rail. The fixed guide rail is fixedly connected to the cavity. Several connecting rods are hinged side-by-side in the cavity. One end of each connecting rod is hinged to one side of the movable guide rail. The inner surfaces of the fixed and movable guide rails are respectively provided with a first guide groove and a second guide groove. A first clearance window communicating with the cavity is provided through the inner wall of the doorpost. One end of each connecting shaft passes through the first clearance window and is movably disposed between the first and second guide grooves. A limiting block is provided at the top of the movable guide rail to close the top of the second guide groove. The lifting mechanism can apply an upward pulling force to the door panel.

2. The large-stroke oven door mechanism according to claim 1, characterized in that, The lifting mechanism includes a longitudinal linear drive device disposed on one side of the gatepost, a movable pulley, a chain, a connecting plate fixedly connected to one side of the top of the gatepost, a first sprocket rotatably connected to the connecting plate, and several second sprockets rotatably connected in the cavity. The longitudinal linear drive device includes an output shaft, the movable pulley is rotatably connected to one end of the output shaft, the chain is connected between the movable pulley, the first sprocket, and the second sprockets, and its two ends are respectively fixedly connected to the bottom of the connecting plate and one of the connecting shafts. A second clearance window communicating with the cavity is provided through one side wall of the gatepost, and the chain passes through the second clearance window.

3. The large-stroke oven door mechanism according to claim 2, characterized in that, An axial bearing matching the width of the first guide groove and the second guide groove is axially connected to one end of the connecting shaft, and a radial bearing is radially connected to one end of the connecting shaft. Both the axial bearing and the radial bearing are movably disposed between the first guide groove and the second guide groove.

4. The large-stroke oven door mechanism according to claim 3, characterized in that, The longitudinal linear drive device is an electric cylinder.

5. A long-stroke oven door mechanism according to claim 4, characterized in that, The top of the movable guide rail is rotatably connected to a third sprocket. The chain is connected to the third sprocket, and one end of the chain is movably disposed on the second guide groove and fixedly connected to the connecting shaft at the highest position on the side of the door panel.

Images