Multi-stage electrically powered updraft furnace

Abstract

This utility model discloses a multi-stage electric furnace, including a frame, support bases, movable frames, a furnace body, and a drive device. A heating zone is formed on the right side of the frame. Two support bases are arranged opposite each other on the left side of the frame. A movable frame is movably mounted on top of each support base. The furnace body is movably mounted on the two movable frames. The drive device is connected to both the movable frames and the furnace body, driving the movable frames to move on the support bases while simultaneously driving the furnace body to move along the direction of the movable frames. This utility model can simultaneously achieve two stages of travel through the drive device. While maintaining the original speed, the furnace body's travel distance is halved, and the travel time is reduced by half, accelerating the production pace and thus improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace heating technology, specifically a multi-stage electric furnace. Background Technology

[0002] In the thermoforming industry, because the sheets used in thick-sheet thermoforming machines are relatively thick, high-powered electric furnaces are typically used to heat the sheets to accelerate softening. This is usually achieved by using a cylinder-driven or screw motor-driven device to move the furnace to the heating zone. However, because high-powered electric furnaces are quite heavy, their movement speed is generally not very high to ensure stability, resulting in a slow production pace and unsatisfactory production efficiency. Summary of the Invention

[0003] The purpose of this utility model is to provide a multi-segment electric furnace that can simultaneously achieve two strokes through a drive device. While maintaining the original speed, the furnace body's moving distance is halved and the moving time is shortened by half, thus accelerating the production rhythm and improving production efficiency. This solves the problem mentioned in the background art that the slow moving speed of the furnace leads to a slow production rhythm and unsatisfactory production efficiency in thick sheet vacuum forming machines.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-segment electric furnace includes a frame, a support base, a movable frame, a furnace body, and a drive device. A heating zone is formed on the right side of the frame. There are two support bases, which are arranged opposite each other on the left side of the frame. The movable frame is movably mounted on the top of each support base. The furnace body is movably mounted on the two movable frames. The drive device is connected to the movable frames and the furnace body respectively, and is used to drive the movable frames to move on the support base while driving the furnace body to move along the moving direction of the movable frames.

[0005] Preferably, the driving device includes a motor, a drive shaft, a driving wheel, a driven wheel, and a conveyor belt. The motor is mounted at one end of one of the moving frames. One end of the drive shaft is connected to the motor, and the other end is mounted on the other moving frame opposite the motor via a bearing. The driving wheel is fixedly sleeved on the outer circumferential surface of the two moving frames near the drive shaft. There are two driven wheels, which are rotatably disposed at the end of the moving frame away from the motor. There are two conveyor belts, which are wound around the corresponding driving wheel and driven wheel.

[0006] Preferably, each of the conveyor belts includes an upper conveyor section located above and a lower conveyor section located below.

[0007] Preferably, the driving device includes a first connector and a second connector. One end of the first connector is fixedly connected to the support base, and the other end is fixedly connected to the lower conveyor section of the conveyor belt. One end of the second connector is fixedly connected to the electric furnace body, and the other end is fixedly connected to the upper conveyor section of the conveyor belt.

[0008] Preferably, the first connector includes a bracket and a belt clamp. One end of the bracket is fixed to the support base, and the other end extends to the lower conveyor section of the conveyor belt. The belt clamp is connected to the end of the bracket away from the support base and is fixed to the lower conveyor section of the conveyor belt.

[0009] Preferably, the clamp includes an upper clamping plate and a lower clamping plate that are positioned opposite each other. The upper clamping plate and the lower clamping plate have a number of evenly distributed protrusions on their opposite surfaces. The bracket, the upper clamping plate, and the lower clamping plate are all provided with corresponding screw holes.

[0010] Preferably, the electric furnace body includes an outer frame, an inner frame, a mounting plate, and a plurality of heating tubes. The outer frame is movably mounted on two movable frames. The outer ring of the inner frame is connected to the inner ring of the outer frame. The mounting plate is connected to the inner ring of the inner frame. The plurality of heating tubes are evenly arranged on the bottom surface of the mounting plate.

[0011] Preferably, the inner ring of the outer frame is provided with connecting plates on its two opposite edges, and the outer ring of the inner frame is provided with a plurality of lifting plates connected to the connecting plates on its two opposite edges. Both the connecting plates and the lifting plates are provided with corresponding through holes.

[0012] Preferably, the multi-segment electric furnace includes two oppositely arranged guide devices. Each guide device includes a fixed plate, an optical shaft, a sliding sleeve, and a hanging plate. There are two fixed plates, which are spaced apart on the frame. The two ends of the optical shaft are respectively connected to the two fixed plates. The sliding sleeve is movably fitted on the optical shaft. One end of the hanging plate is connected upward to the sliding sleeve, and the other end is connected downward to the furnace body.

[0013] Preferably, a guide plate is connected to the top side of the support base, and a first slider is provided on the top surface of the support base and the side wall of the guide plate. A first guide rail adapted to the first slider is provided on the outer side wall of the movable frame. A second slider is provided on the inner side wall of the movable frame, and a second guide rail adapted to the second slider is provided on the side wall of the electric furnace body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. By connecting the drive unit to the moving frame and the electric furnace body respectively, it is possible to make the moving frame supporting the electric furnace body move forward the same distance as the electric furnace body while the electric furnace body moves. That is, the drive unit can achieve two strokes at the same time, thereby shortening the distance that the electric furnace body originally needed to move. While maintaining the original speed, the moving distance is halved and the moving time is halved, which speeds up the production rhythm and improves production efficiency.

[0015] 2. Clamp the upper and lower clamping plates with the protruding sides onto the upper and lower surfaces of the lower conveyor section respectively, and then fix the upper and lower clamping plates to the bracket with bolts. The protrusions help to increase the friction between the upper and lower clamping plates and the conveyor belt, thereby improving the connection stability.

[0016] 3. When the electric furnace body moves forward or backward under the drive of the drive device, the sliding sleeve slides along the optical axis, making the movement of the electric furnace body more stable and avoiding jamming between the electric furnace body and the moving frame due to the excessive weight of the electric furnace body when the electric furnace body extends relative to the moving frame. Attached Figure Description

[0017] Figure 1 This is a perspective view of the multi-segment electric furnace of this utility model; Figure 2 This is a perspective view of the multi-section electric furnace of this utility model, omitting the frame; Figure 3 This is an exploded view of the multi-stage electric furnace of this utility model; Figure 4 This is an exploded view of the electric furnace body of this utility model; Figure 5 This utility model has a three-dimensional clip.

[0018] In the diagram: 1. Frame; 11. Heating zone; 2. Support base; 3. Moving frame; 4. Electric furnace body; 41. Outer frame; 411. Connecting plate; 42. Inner frame; 421. Lifting plate; 43. Mounting plate; 44. Heating tube; 5. Drive unit; 51. Motor; 52. Drive shaft; 53. Drive wheel; 54. Driven wheel; 55. Conveyor belt; 551. Upper conveyor section; 552. Lower conveyor section; 56. First connecting piece; 561. Bracket; 562. Belt clamp; 5621. Upper clamping plate; 5622. Lower clamping plate; 5623. Protrusion; 57. Second connecting piece; 6. Guide plate; 7. Guide device; 71. Fixing plate; 72. Optical axis; 73. Sliding sleeve; 74. Lifting plate. Detailed Implementation

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5 A multi-segment electric furnace includes a frame 1, a support base 2, a movable frame 3, a furnace body 4, and a drive device 5. A heating zone 11 is formed on the right side of the frame 1. There are two support bases 2, which are arranged opposite each other on the left side of the frame 1. The movable frame 3 is movably mounted on the top of each support base 2. The furnace body 4 is movably mounted on the two movable frames 3. The drive device 5 is connected to the movable frames 3 and the furnace body 4 respectively, and is used to drive the movable frames 3 to move on the support base 2 while driving the furnace body 4 to move along the moving direction of the movable frames 3.

[0021] This invention connects the drive device 5 to the moving frame 3 and the electric furnace body 4 respectively, enabling the moving frame 3 supporting the electric furnace body 4 to advance the same distance as the electric furnace body 4 while the electric furnace body 4 moves. In other words, the drive device 5 can achieve two strokes simultaneously, thereby shortening the original distance that the electric furnace body 4 needs to move. While maintaining the original speed, the moving distance of the electric furnace body 4 is halved, and the moving time is halved, which speeds up the production rhythm and improves production efficiency.

[0022] Please see Figure 2-3 The driving device 5 includes a motor 51, a drive shaft 52, a drive wheel 53, a driven wheel 54, and a conveyor belt 55. The motor 51 is mounted on one end of one of the movable frames 3. One end of the drive shaft 52 is connected to the motor 51, and the other end is mounted on the other movable frame 3 opposite to the motor 51 via a bearing. The drive wheel 53 is fixedly sleeved on the outer circumferential surface of the two movable frames 3. There are two driven wheels 54, which are rotatably disposed at the end of the movable frame 3 away from the motor 51. There are two conveyor belts 55, which are wound around the corresponding drive wheel 53 and driven wheel 54. In this embodiment, each conveyor belt 55 includes an upper conveying section 551 located above and a lower conveying section 552 located below.

[0023] The drive unit 5 includes a first connector 56 and a second connector 57. One end of the first connector 56 is fixedly connected to the support base 2, and the other end is fixedly connected to the lower conveyor section 552 of the conveyor belt 55. One end of the second connector 57 is fixedly connected to the electric furnace body 4, and the other end is fixedly connected to the upper conveyor section 551 of the conveyor belt 55. Please refer to [link / reference]. Figure 2During operation, motor 51 drives two drive wheels 53 to rotate simultaneously via transmission shaft 52, causing two conveyor belts 55 to move in a circle between the drive wheels 53 and driven wheels 54. As the conveyor belts 55 move, they also drive the first connecting member 56 and the second connecting member 57 to move. During this process, the first connecting member 56 and the second connecting member 57 move in opposite directions. Because the first connecting member 56, connected to the support base 2, remains fixed and cannot move, under the reaction force of the conveyor belts 55, motor 51 and the moving frame 3 can only move relative to the support base 2, thus achieving… The moving frame 3 and the electric furnace body 4 on it move forward or backward. At the same time, the electric furnace body 4 also moves relative to the moving frame 3 under the drive of the upper conveyor section 551 of the conveyor belt 55. The moving direction of the electric furnace body 4 is the same as the moving direction of the moving frame 3, and the moving distance of the electric furnace body 4 relative to the moving frame 3 is the same as the moving distance of the moving frame 3 relative to the support base 2. Compared with the traditional method of only driving the electric furnace body 4 forward, half of the stroke is saved, the moving time of the electric furnace body 4 is shortened, and the electric furnace body 4 can reach the heating position more quickly, thereby improving production efficiency.

[0024] Please see Figure 5 The first connector 56 includes a bracket 561 and a belt clip 562. One end of the bracket 561 is fixed to the support base 2, and the other end extends to the lower conveying section 552 of the conveyor belt 55. The belt clip 562 is connected to the end of the bracket 561 away from the support base 2 and is fixed to the lower conveying section 552 of the conveyor belt 55. In this embodiment, the bracket 561 is L-shaped. The structure of the second connector 57 is the same as that of the first connector 56, and its structural principle will not be described in detail here.

[0025] The clamp 562 includes an upper clamping plate 5621 and a lower clamping plate 5622 that are positioned vertically opposite each other. The opposing surfaces of the upper clamping plate 5621 and the lower clamping plate 5622 are provided with a plurality of evenly distributed protrusions 5623. In this embodiment, the bracket 561, the upper clamping plate 5621, and the lower clamping plate 5622 are all provided with corresponding screw holes. During installation, the sides of the upper clamping plate 5621 and the lower clamping plate 5622 with protrusions 5623 are first clamped onto the upper and lower surfaces of the lower conveyor section 552, respectively. Then, the upper clamping plate 5621 and the lower clamping plate 5622 are fixed to the bracket 561 using bolts. The protrusions 5623 help increase the friction between the upper clamping plate 5621, the lower clamping plate 5622, and the conveyor belt 55, thereby improving the connection stability.

[0026] In this embodiment, a guide plate 6 is connected to the top side of the support base 2. A first slider is provided on the top surface of the support base 2 and the side wall of the guide plate 6. A first guide rail adapted to the first slider is provided on the outer side wall of the movable frame 3. A second slider is provided on the inner side wall of the movable frame 3. A second guide rail adapted to the second slider is provided on the side wall of the electric furnace body 4.

[0027] Please see Figure 4 The electric furnace body 4 includes an outer frame 11, an inner frame 42, a mounting plate 43, and several heating tubes 44. The outer frame 11 is movably mounted on two movable frames 3. The outer ring of the inner frame 42 is connected to the inner ring of the outer frame 11. The mounting plate 43 is connected to the inner ring of the inner frame 42. The several heating tubes 44 are evenly arranged on the bottom surface of the mounting plate 43. In this embodiment, connecting plates 411 are respectively provided on the two opposite edges of the inner ring of the outer frame 11, and several lifting plates 421 connected to the connecting plates 411 are respectively provided on the two opposite edges of the outer ring of the inner frame 42. Both the connecting plates 411 and the lifting plates 421 have corresponding through holes, and bolts are screwed into the through holes. By loosening the bolts in the through holes, the connecting plates 411 and the lifting plates 421 can be separated, thereby quickly replacing the entire mounting plate 43 and heating tubes 44 on the inner frame 42, which is convenient for later maintenance.

[0028] Please see Figure 2 The multi-segment electric furnace includes two opposing guide devices 7. Each guide device 7 includes a fixed plate 71, an optical axis 72, a sliding sleeve 73, and a hanging plate 74. There are two fixed plates 71, spaced apart on the frame 1. The two ends of the optical axis 72 are respectively connected to the two fixed plates 71. The sliding sleeve 73 is movably fitted onto the optical axis 72. One end of the hanging plate 74 is connected upward to the sliding sleeve 73, and the other end is connected downward to the furnace body 4. In this embodiment, the bottom end of the hanging plate 74 is connected to the outer frame 11 of the furnace body 4. When the furnace body 4 moves forward or backward under the drive of the drive device 5, the sliding sleeve 73 slides axially along the optical axis 72, making the movement of the furnace body 4 more stable and avoiding jamming between the furnace body 4 and the moving frame 3 due to the excessive weight of the furnace body 4 when it extends relative to the moving frame 3.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage electric furnace, characterized in that: The device includes a frame (1), a support base (2), a movable frame (3), an electric furnace body (4), and a drive device (5). A heating zone (11) is formed on the right side of the frame (1). There are two support bases (2), which are arranged opposite each other on the left side of the frame (1). The movable frame (3) is movably mounted on the top of each support base (2). The electric furnace body (4) is movably mounted on the two movable frames (3). The drive device (5) is connected to the movable frame (3) and the electric furnace body (4) respectively, and is used to drive the movable frame (3) to move on the support base (2) while driving the electric furnace body (4) to move along the moving direction of the movable frame (3).

2. The multi-stage electric furnace according to claim 1, characterized in that: The drive device (5) includes a motor (51), a drive shaft (52), a drive wheel (53), a driven wheel (54), and a conveyor belt (55). The motor (51) is installed at one end of one of the moving frames (3). One end of the drive shaft (52) is connected to the motor (51) for transmission, and the other end is installed on the other moving frame (3) opposite to the motor (51) through a bearing. The drive shaft (52) is fixedly sleeved with the drive wheel (53) near the outer circumference of the two moving frames (3). There are two driven wheels (54), which are rotatably arranged at the end of the moving frame (3) away from the motor (51). There are two conveyor belts (55), which are wound around the corresponding drive wheel (53) and driven wheel (54).

3. The multi-stage electric furnace according to claim 2, characterized in that: Each of the conveyor belts (55) includes an upper conveyor section (551) located above and a lower conveyor section (552) located below.

4. The multi-stage electric furnace according to claim 3, characterized in that: The drive device (5) includes a first connector (56) and a second connector (57). One end of the first connector (56) is fixedly connected to the support base (2), and the other end is fixedly connected to the lower conveyor section (552) of the conveyor belt (55). One end of the second connector (57) is fixedly connected to the electric furnace body (4), and the other end is fixedly connected to the upper conveyor section (551) of the conveyor belt (55).

5. The multi-stage electric furnace according to claim 4, characterized in that: The first connector (56) includes a bracket (561) and a belt clip (562). One end of the bracket (561) is fixed to the support base (2), and the other end extends to the lower conveyor section (552) of the conveyor belt (55). The belt clip (562) is connected to the end of the bracket (561) away from the support base (2) and is fixed to the lower conveyor section (552) of the conveyor belt (55).

6. The multi-stage electric furnace according to claim 5, characterized in that: The clamp (562) includes an upper clamping plate (5621) and a lower clamping plate (5622) that are positioned opposite each other. The upper clamping plate (5621) and the lower clamping plate (5622) are provided with a number of evenly distributed protrusions (5623) on their opposite surfaces. The bracket (561), the upper clamping plate (5621) and the lower clamping plate (5622) are all provided with corresponding screw holes.

7. The multi-stage electric furnace according to any one of claims 1-6, characterized in that: The electric furnace body (4) includes an outer frame (41), an inner frame (42), a mounting plate (43), and a number of heating tubes (44). The outer frame (41) is movably mounted on two movable frames (3). The outer ring of the inner frame (42) is connected to the inner ring of the outer frame (41). The mounting plate (43) is connected to the inner ring of the inner frame (42). The number of heating tubes (44) are evenly arranged on the bottom surface of the mounting plate (43).

8. The multi-stage electric furnace according to claim 7, characterized in that: The inner ring of the outer frame (41) is provided with connecting plates (411) on its two opposite edges, and the outer ring of the inner frame (42) is provided with a plurality of lifting plates (421) connected to the connecting plates (411) on its two opposite edges. The connecting plates (411) and the lifting plates (421) are provided with corresponding through holes.

9. The multi-stage electric furnace according to any one of claims 1-6, characterized in that: The device includes two opposing guide devices (7). Each guide device (7) includes a fixed plate (71), an optical axis (72), a sliding sleeve (73), and a hanging plate (74). There are two fixed plates (71) which are spaced apart on the frame (1). The two ends of the optical axis (72) are respectively connected to the two fixed plates (71). The sliding sleeve (73) is movably fitted on the optical axis (72). One end of the hanging plate (74) is connected upward to the sliding sleeve (73), and the other end is connected downward to the electric furnace body (4).

10. The multi-stage electric furnace according to claim 1, characterized in that: The top side of the support base (2) is connected to the guide plate (6). The top surface of the support base (2) and the side wall of the guide plate (6) are both provided with a first slider. The outer side wall of the moving frame (3) is provided with a first guide rail adapted to the first slider. The inner side wall of the moving frame (3) is provided with a second slider. The side wall of the electric furnace body (4) is provided with a second guide rail adapted to the second slider.

Images