Automatic feeding device for kiln

Abstract

The utility model relates to the technical field of ceramic firing, especially a kiln automatic feeding device, which can support and feed the bottom of ceramic products, improve the stability of ceramic product feeding, and avoid scratching the outer wall of the ceramic product, comprising a synchronous opening and closing clamp and a two-half annular supporting plate, the synchronous opening and closing clamp comprises a clamp body, two symmetrical opening and closing assemblies arranged on the clamp body, and an opening and closing driver, the opening and closing assembly comprises a driving arm hingedly installed on the clamp body, a driven arm hingedly installed on the clamp body, and a rotating arm hingedly connected to the driving arm and the driven arm at both ends, the hinge points between the driving arm, the driven arm, the rotating arm and the clamp body enclose a parallelogram shape, the driving arms on the two opening and closing assemblies are each provided with intermeshing teeth, the opening and closing driver comprises a driving gear rotatably installed on the clamp body and a motor for providing power for the rotation of the driving gear, and the driving gear is meshed with the teeth on one of the driving arms.

Description

Technical Field

[0001] This utility model relates to the technical field of ceramic firing, and in particular to an automatic feeding device for kilns. Background Technology

[0002] Kilns are the main tools for firing ceramic products. In order to improve the firing quality of ceramic products, the kiln needs to be preheated before the ceramic products are put into the kiln. This allows the moisture inside the kiln to be discharged and the temperature to rise evenly, so as to ensure that the kiln environment is suitable for firing ceramic products and to prepare for the subsequent high-temperature firing steps. The internal temperature of the kiln is high after preheating, so a feeding device is often used to feed the ceramic products.

[0003] For example, utility model patent application CN222330896U discloses a feeding device for ceramic kilns, including a feeding and fixing frame, a transfer mechanism fixedly connected to the lower end surface of the drive slider by welding, a feeding clamp installed at the lower end of the transfer mechanism, a push cylinder installed at the rear end of the transfer mechanism, and a clamping arm assembly fixedly connected to the front end surface of the clamping block assembly by welding. This facilitates the feeding and transfer of the clamped and fixed ceramic blank to the kiln for high-temperature baking.

[0004] However, the following defects were found: the ceramic products are loaded by clamping them, which can damage or scratch the outer wall of the ceramic products during the clamping process, affecting the quality of the subsequent firing and molding of the ceramic products. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic kiln feeding device that can support the bottom of ceramic products during feeding, improving the stability of ceramic product feeding while avoiding scratches on the outer wall of the ceramic products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic kiln feeding device, comprising a synchronously opening and closing clamp and two semi-annular trays. The synchronously opening and closing clamp includes a clamp body, two opening and closing components symmetrically arranged on the clamp body, and an opening and closing driver. The opening and closing component includes a drive arm hinged to the clamp body, a driven arm hinged to the clamp body, and a rotating arm with its two ends hinged to the drive arm and the driven arm, respectively. The hinge points between the drive arm, the driven arm, the rotating arm, and the clamp body form a parallelogram shape. The drive arms on both opening and closing components are provided with meshing teeth. The opening and closing driver includes a drive gear rotatably mounted on the clamp body and an electric motor that provides power for the rotation of the drive gear. The drive gear meshes with the teeth on one set of drive arms. The two semi-annular trays are respectively fixedly mounted on the rotating arms on the two opening and closing components. Furthermore, the two semi-annular trays form a circle when closed together.

[0007] Preferably, both of the semi-annular support plates are fixedly installed with elastic straightening supports. The elastic straightening supports include a rod frame, a slide mounted on the rod frame, an inclined bracket hinged to the slide, a support part mounted on the inclined bracket, and a tension spring. One end of the tension spring is hinged to the top of the rod frame, and the other end of the tension spring is hinged to the inclined bracket. A spring is sleeved on the rod frame, and the spring provides an upward elastic thrust to the slide.

[0008] Preferably, the supporting part includes a crossbar fixedly installed on the inclined bracket, a support block inertially rotatably installed on the crossbar, and a flexible pad disposed on the support block; further, the support block is inertially connected to the crossbar through an inertial bearing or filler, etc.; the flexible pad may be a sponge pad, a fiber pad, or other flexible pad.

[0009] Preferably, it also includes a feed propulsion mechanism, which includes a lifting arm, a feed frame slidably mounted on the lifting arm, and a feed drive component that provides power for the sliding of the feed frame. The clamp body is fixedly mounted on the feed frame. Further, the feed drive component is preferably a drive cylinder, but the feed drive component can also be an equivalent component with linear drive effect, such as a mechanical slide.

[0010] Preferably, the feed frame is provided with multiple sets of equally spaced limiting shafts, and a limiting cylinder is fixedly installed on the lifting arm. A locking tooth is fixedly installed at the output end of the limiting cylinder, and the locking tooth is inserted into two adjacent limiting shafts; the limiting cylinder is preferably a pneumatic cylinder.

[0011] Preferably, it also includes a support frame, on which the cantilever arm is rotatably mounted. A rotary drive component that provides power for the rotation of the cantilever arm is mounted on the support frame. Further, the rotary drive component includes a rotating shaft rotatably mounted on the support frame, a swing arm fixedly mounted on the rotating shaft, and a drive cylinder hinged to the support frame. The output end of the drive cylinder is hinged to the swing arm. The rotary drive component may also be a brake stepper motor and a rotating shaft, with the output end of the brake stepper motor being drively connected to the cantilever arm through the rotating shaft.

[0012] Preferably, it also includes a fixed frame, on which the support frame is slidably mounted. The fixed frame is equipped with a lifting drive component that provides power for the support frame to slide up and down. Further, the lifting drive component is preferably a drive cylinder, but other equivalent drive components that drive the support frame to move up and down can also be used.

[0013] Preferably, the top surface of the semi-annular tray is a smooth surface; further, the top surface of the semi-annular tray is polished into a flat and smooth surface by using fine sandpaper.

[0014] Beneficial effects Compared with the prior art, this utility model provides an automatic kiln feeding device with the following advantages: The automatic kiln feeding device places ceramic products in the middle of two closed semi-circular trays. The motor drives the drive gear to rotate, and after tooth transmission, the corresponding drive arm rotates. The drive arm drives the rotating arm to rotate, so that the two semi-circular trays quickly move away from each other. The ceramic products on the semi-circular trays fall directly onto the kiln platform. This can support the bottom of the ceramic products during feeding, improve the stability of feeding the ceramic products, and avoid scratching the outer wall of the ceramic products. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a top view schematic diagram of the structure of this utility model.

[0017] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0018] Figure 4 This is the utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0019] The following components are labeled in the attached diagram: 1. Semi-circular support plate; 2. Clamp body; 3. Drive arm; 4. Driven arm; 5. Rotating arm; 6. Gear; 7. Drive gear; 8. Motor; 9. Rod frame; 10. Slide; 11. Inclined bracket; 12. Tension spring; 13. Spring; 14. Crossbar; 15. Support block; 16. Flexible pad; 17. Cantilever arm; 18. Feed frame; 19. Feed drive component; 20. Limiting shaft; 21. Limiting cylinder; 22. Clamping tooth; 23. Support frame; 24. Rotation drive component; 25. Fixed frame; 26. Lifting drive component. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0021] Please refer to Figure 1-3An automatic feeding device for a kiln includes a synchronously opening and closing clamp and two semi-annular trays 1. The synchronously opening and closing clamp includes a clamp body 2, two opening and closing components symmetrically arranged on the clamp body 2, and an opening and closing driver. The opening and closing components include a drive arm 3 hinged to the clamp body 2, a driven arm 4 hinged to the clamp body 2, and a rotating arm 5 with its two ends hinged to the drive arm 3 and the driven arm 4 respectively. The hinge points between the drive arm 3, the driven arm 4, the rotating arm 5, and the clamp body 2 form a parallelogram shape. The drive arm 3 on both opening and closing components is provided with meshing teeth 6. The opening and closing driver includes a drive gear 7 rotatably mounted on the clamp body 2 and an electric motor 8 that provides power for the rotation of the drive gear 7. The drive gear 7 meshes with the teeth 6 on one set of drive arms 3. The two semi-annular trays 1 are respectively fixedly mounted on the rotating arms 5 on the two opening and closing components. Furthermore, the two semi-annular trays 1 form a circle after closing with each other.

[0022] For details, please refer to Figure 2 The top surface of the semi-circular tray 1 is a smooth surface; furthermore, the top surface of the semi-circular tray 1 is polished into a flat and smooth surface by using fine sandpaper.

[0023] For details, please refer to Figure 1 It also includes a feed propulsion mechanism, which includes a lifting arm 17, a feed frame 18 slidably mounted on the lifting arm 17, and a feed drive 19 that provides power for the sliding of the feed frame 18. The clamp body 2 is fixedly mounted on the feed frame 18. Furthermore, the feed drive 19 is preferably a drive cylinder, but the feed drive 19 can also be an equivalent component with linear drive effect, such as a mechanical slide.

[0024] For details, please refer to Figure 1 or Figure 2 The feed frame 18 is provided with multiple sets of equally spaced limiting shafts 20, and the lifting arm 17 is fixedly installed with a limiting cylinder 21. The output end of the limiting cylinder 21 is fixedly installed with a locking tooth 22, which is inserted into two adjacent limiting shafts 20. The limiting cylinder 21 is preferably a pneumatic cylinder.

[0025] For details, please refer to Figure 1 It also includes a support frame 23, on which the cantilever arm 17 is rotatably mounted. A rotary drive component 24, which provides power for the rotation of the cantilever arm 17, is mounted on the support frame 23. Further, the rotary drive component 24 includes a rotating shaft rotatably mounted on the support frame 23, a swing arm fixedly mounted on the rotating shaft, and a drive cylinder hinged to the support frame 23. The output end of the drive cylinder is hinged to the swing arm. The rotary drive component 24 may also be a brake stepper motor and a rotating shaft. The output end of the brake stepper motor is connected to the cantilever arm 17 through the rotating shaft.

[0026] For details, please refer to Figure 3It also includes a fixed frame 25, on which the support frame 23 is slidably mounted. The fixed frame 25 is equipped with a lifting drive component 26 that can provide power for the support frame 23 to slide up and down. Furthermore, the lifting drive component 26 is preferably a drive cylinder, but other equivalent drive components that can drive the support frame 23 to move up and down can also be used.

[0027] The smooth surface reduces friction between the bottom of the ceramic product and the semi-circular support plate 1, allowing the ceramic product to slide more smoothly from the semi-circular support plate 1 and avoiding unnecessary damage. By activating the feed drive 19, the feed frame 18 is fed towards one side of the kiln to deliver the ceramic product into the kiln. Once the feed frame 18 is in position, the limit cylinder 21 is activated, causing the locking teeth 22 to insert into the corresponding two limit shafts 20. This limits the feed frame 18, preventing it from shifting and ensuring stability when feeding the ceramic product into the kiln. The rotating drive component 24 can drive the lifting arm 17 to rotate, so that the synchronous opening and closing clamps are away from the kiln. When ceramic products are fed to the semi-circular pallet 1, the operator can stay away from the kiln opening and avoid being burned by the hot air at the kiln opening, thus improving the operator's feeding safety. The lifting drive component 26 can drive the support frame 23 to slide up and down, so as to adjust the height difference between the ceramic products and the kiln platform. When the ceramic products are fed into the kiln, the bottom of the semi-circular pallet 1 contacts the top of the kiln body, minimizing the feeding drop of the ceramic products and avoiding damage to the ceramic products during feeding.

[0028] For details, please refer to Figure 4 Both halves of the annular support plate 1 are fixedly installed with elastic straightening supports. The elastic straightening supports include a rod frame 9, a slide 10 slidably installed on the rod frame 9, an inclined bracket 11 hinged to the slide 9, a support part installed on the inclined bracket 11, and a tension spring 12. One end of the tension spring 12 is hinged to the top of the rod frame 9, and the other end of the tension spring 12 is hinged to the inclined bracket 11. A spring 13 is sleeved on the rod frame 9, and the spring 13 provides an upward elastic thrust to the slide 10. It should be noted that the elastic force and tension of the spring 13 and the tension spring 12 should not be too large to avoid damage to the exterior of the ceramic product caused by the support part.

[0029] For details, please refer to Figure 4 The supporting part includes a crossbar 14 fixedly installed on the inclined bracket 11, a support block 15 inertially rotatably installed on the crossbar 14, and a flexible pad 16 disposed on the support block 15; further, the support block 15 is inertially connected to the crossbar 14 through an inertial bearing or filler, etc.; the flexible pad 16 can be a sponge pad, fiber pad or other flexible pad.

[0030] Under the action of the elastic straightening support, the ceramic products at the semi-circular support plate 1 can be supported to prevent the ceramic products from tilting or shifting during the transfer process. When the two semi-circular support plates 1 separate from each other, under the action of the tension spring 12 and the spring 13, the supporting part is in close contact with the outer wall of the ceramic product, which can buffer the fall of the ceramic product and avoid damage caused by the direct drop of the ceramic product. It also plays a protective role in feeding the ceramic product into the furnace platform. The support block 15 is inertially rotated and connected to the crossbar 14, so that the support block 15 fits with the outer wall of the ceramic product. The flexible pad 16 can ensure that the support block 15 is in flexible contact with the outer wall of the ceramic product, further preventing the support block 15 from damaging the outer wall of the ceramic.

[0031] The operation of the automatic kiln feeding device provided by this utility model is as follows: The operator presses down the inclined brackets 11 on the two elastic straightening supports, places the ceramic products between the two closed semi-circular trays 1, releases the inclined brackets 11, and under the action of the tension spring 12 and the spring 13, the supporting part is in close contact with the outside of the ceramic products, and the ceramic products are limited and straightened. Then the rotation drive 24 and the feeding drive 19 are activated, and the synchronous opening and closing clamps move towards the side of the kiln door. The ceramic products enter the kiln and are located above the kiln platform. The lifting drive 26 drives the support frame 23 to move down until the bottom of the semi-circular tray 1 contacts the top of the kiln platform. The motor 8 drives the drive gear 7 to rotate, and after being transmitted by the tooth 6, the corresponding drive arm 3 rotates. The drive arm 3 drives the rotating arm 5 to rotate, so that the two semi-circular trays 1 quickly move away from each other. The ceramic products on the semi-circular trays 1 fall smoothly onto the kiln platform under the buffering effect of the elastic straightening supports, thus completing the automatic feeding of ceramic products into the kiln.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. An automatic feeding device for a kiln, characterized in that, The device includes a synchronous opening and closing clamp and two semi-annular trays (1). The synchronous opening and closing clamp includes a clamp body (2), two opening and closing components and an opening and closing driver arranged symmetrically on the clamp body (2). The opening and closing components include a drive arm (3) hinged to the clamp body (2), a driven arm (4) hinged to the clamp body (2), and a rotating arm (5) with its two ends hinged to the drive arm (3) and the driven arm (4) respectively. The hinge points between the drive arm (3), the driven arm (4), the rotating arm (5) and the clamp body (2) form a parallelogram shape. The drive arm (3) on both opening and closing components is provided with teeth (6) that mesh with each other. The opening and closing driver includes a drive gear (7) rotatably mounted on the clamp body (2) and an electric motor (8) that provides power for the rotation of the drive gear (7). The drive gear (7) meshes with the teeth (6) on one of the drive arms (3). The two semi-annular trays (1) are fixedly mounted on the rotating arms (5) on the two opening and closing components respectively.

2. The automatic kiln feeding device according to claim 1, characterized in that, Both of the semi-circular support plates (1) are fixedly installed with elastic straightening support devices. The elastic straightening support device includes a rod frame (9), a slide (10) slidably installed on the rod frame (9), an inclined bracket (11) hinged on the slide (10), a support part installed on the inclined bracket (11), and a tension spring (12). One end of the tension spring (12) is hinged to the top of the rod frame (9), and the other end of the tension spring (12) is hinged to the inclined bracket (11). A spring (13) is sleeved on the rod frame (9), and the spring (13) provides an upward elastic thrust to the slide (10).

3. The automatic kiln feeding device according to claim 2, characterized in that, The supporting part includes a crossbar (14) fixedly installed on the inclined bracket (11), a support block (15) inertially rotatably installed on the crossbar (14), and a flexible pad (16) provided on the support block (15).

4. The automatic kiln feeding device according to claim 1 or 3, characterized in that, It also includes a feed propulsion mechanism, which includes a lifting arm (17), a feed frame (18) slidably mounted on the lifting arm (17), and a feed drive (19) that provides power for the sliding of the feed frame (18). The clamp body (2) is fixedly mounted on the feed frame (18).

5. The automatic kiln feeding device according to claim 4, characterized in that, The feed frame (18) is provided with multiple sets of equally spaced limiting shafts (20), and the lifting arm (17) is fixedly installed with a limiting cylinder (21). The output end of the limiting cylinder (21) is fixedly installed with a locking tooth (22), and the locking tooth (22) is inserted into two adjacent limiting shafts (20).

6. The automatic kiln feeding device according to claim 5, characterized in that, It also includes a support frame (23), on which a cantilever arm (17) is rotatably mounted. The support frame (23) is equipped with a rotary drive (24) that provides power for the rotation of the cantilever arm (17).

7. The automatic kiln feeding device according to claim 6, characterized in that, It also includes a fixed frame (25), on which the support frame (23) is slidably mounted. The fixed frame (25) is equipped with a lifting drive (26) that can provide power for the support frame (23) to slide up and down.

8. The automatic kiln feeding device according to claim 1, characterized in that, The top surface of the semi-annular support plate (1) is a smooth surface.

Images