Hot pressing furnace

Abstract

The utility model discloses a hot-pressing furnace, which belongs to the technical field of hot-pressing furnace equipment and comprises a support, a furnace body is arranged above the support, and a liftable chassis is arranged at the bottom of the furnace body. A lifting device is arranged at the bottom of the chassis, the lifting device comprises two lead screw lifters, the two lead screw lifters are both connected with liftable supporting plates, and the two supporting plates are symmetrically arranged at the bottom of the chassis; a rotary locking mechanism is arranged on the support, and after the base plate is lifted to make contact with the bottom of the furnace body, the base plate can be locked to the bottom of the furnace body through the rotary locking mechanism. By means of the structure, stable feeding at the bottom of the furnace body can be achieved, and stable locking can be achieved through the rapid locking mechanism of the furnace base plate.

Description

Technical Field

[0001] The utility model relates to the technical field of hot pressing furnace equipment, in particular to a hot pressing furnace. Background Art

[0002] The vacuum hot pressing furnace is an electric heating furnace that requires periodic operation. The original loading position mostly uses side door operation, or after loading from the bottom, a cylinder or hydraulic cylinder is used as the power to lift the loading.

[0003] On the basis of adopting side-type door opening, if the peripheral cylinder heating method is adopted for heating, the serial connection of the heating components is difficult to achieve and the structure is complicated; and the lifting mechanism using cylinders or hydraulic cylinders as the power has the disadvantages of large impact, poor synchronization and poor stability during the movement, which affects the stability required after loading materials; there are also screw methods for lifting, but most of them use a single screw lift with two guides, or two screw lifts with two guides. Doing so will result in a larger and more complicated structure, increase unnecessary load and power waste, and at the same time, high requirements for processing precision are required, and it is still difficult to meet the stability and flatness requirements of the lifting and loading mechanism.

[0004] In addition, based on the bottom loading structure, the existing patent (publication number CN 218059305 U) proposes a quick locking mechanism for the furnace chassis. This mechanism may cause the cylinder to loosen and cause the chassis to fall after power or gas is cut off, posing a production safety hazard.

[0005] In view of the above problems in the prior art, the present invention combines many years of design and use experience in related fields with strong professional knowledge to design and manufacture a hot pressing furnace to overcome the above defects. Utility Model Content

[0006] With regard to the problems existing in the prior art, the utility model provides a hot pressing furnace which can realize stable bottom loading, and the quick locking mechanism of the furnace bottom plate can be stably locked.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a hot pressing furnace comprises a bracket, a furnace body is arranged above the bracket, and a chassis capable of lifting and lowering is arranged at the bottom of the furnace body;

[0008] A lifting device is provided at the bottom of the chassis, and the lifting device includes two screw lifts, and both of the two screw lifts are connected with a liftable support plate, and the two support plates are symmetrically arranged at the bottom of the chassis;

[0009] The bracket is provided with a rotary locking mechanism, and after the chassis is raised and contacts the bottom of the furnace body, the chassis can be locked to the bottom of the furnace body through the rotary locking mechanism.

[0010] Preferably, the rotary locking mechanism comprises a rotary disk and a rotary driving device for driving the rotary disk to rotate, and a plurality of L-shaped blocks are evenly distributed on the circumference of the bottom of the rotary disk, and the lateral blocks of the L-shaped blocks point to the center of the rotary disk;

[0011] The circumference of the side wall of the chassis is uniformly distributed with a plurality of anti-interference grooves, and when the chassis is raised, the L-shaped block can be transferred to the bottom of the chassis through the anti-interference grooves;

[0012] A first locking slope is provided at the bottom of the chassis, and a second locking slope is provided above the transverse block of the L-shaped block. When the turntable drives the L-shaped block to rotate at the bottom of the chassis, the second locking slope cooperates with the first locking slope to lock the chassis to the bottom of the furnace body.

[0013] Preferably, the rotary drive device comprises a cylinder, the cylinder is hinged on the bracket, a connecting block is hinged at the end of the cylinder rod of the cylinder, and the connecting block is connected to the rotary disk.

[0014] Preferably, a furnace body connecting plate is provided at the bottom of the furnace body, and the rotary plate can rotate on the furnace body connecting plate;

[0015] A wear-resistant structure is provided between the rotary disk and the furnace body connecting disk.

[0016] Preferably, a first wear-resistant plate is provided at the bottom of the chassis, and the first locking slope is provided at the bottom of the first wear-resistant plate;

[0017] A second wear-resistant plate is provided above the transverse block of the L-shaped clamping block, and the second locking inclined surface is provided above the second wear-resistant plate.

[0018] Preferably, the lifting device also includes a motor, a dual-output shaft reducer and two commutators, the motor is connected to the dual-output shaft reducer, the two ends of the dual-output shaft reducer are respectively connected to the two commutators through transmission shafts, and the two commutators are respectively connected to the two screw lifts through transmission shafts.

[0019] Preferably, the support plates are provided with arc-shaped positioning grooves, and the chassis can cooperate with the arc-shaped positioning grooves on the two support plates.

[0020] Preferably, at least one positioning pin is provided in the arc-shaped positioning groove;

[0021] The bottom of the chassis is fixedly connected with a lower chassis, and the lower chassis is provided with a positioning pin hole which cooperates with the positioning pin on the supporting plate.

[0022] Preferably, a guide rail is provided at the bottom of the bracket, and the guide rail can extend to the outside of the bottom of the furnace body, and wheels cooperating with the guide rail are provided at the bottom of the chassis.

[0023] Preferably, a positioning structure is provided on the guide rail, and the positioning structure can position the chassis on the guide rail at the bottom of the furnace body.

[0024] The utility model is beneficial in that:

[0025] 1. The utility model utilizes a rotary locking structure to ensure that the locking position will not loosen in the event of power outages or gas failures, thereby avoiding production safety hazards.

[0026] 2. The utility model uses one motor to drive two elevators to rise and fall synchronously, and the chassis rises smoothly. The positioning pin holes on the chassis cooperate with the positioning pins on the elevator support plate to ensure the coaxiality of the chassis with the furnace body during the lifting process. In addition, during the locking process, the chassis can be prevented from rotating to ensure the locking effect. In addition, since the bottom is lifted and loaded, the series connection problem of the heating part of the peripheral tube heating furnace is solved, making the structure of the heating part simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a hot pressing furnace;

[0028] Figure 2 It is a schematic diagram of the furnace body and the rotary locking mechanism of the utility model;

[0029] Figure 3 It is a schematic diagram of the chassis of the utility model;

[0030] Figure 4 It is a partial schematic diagram of the utility model when locked;

[0031] Figure 5 This is a schematic diagram of the matching of the inclined surfaces of the first wear-resistant plate and the second wear-resistant plate of the utility model;

[0032] Figure 6 It is a schematic diagram of the rotary drive device of the utility model;

[0033] Figure 7 It is a schematic diagram of the lifting device of the utility model;

[0034] Figure 8 It is a side view of the chassis of the utility model on the guide rail.

[0035] In the figure: 1- bracket, 2- furnace body, 3- turntable, 4- turntable locking mechanism, 5- chassis, 6- guide rail, 7- lifting device, 8- L-shaped block, 9- furnace body connecting plate, 10- wear-resistant structure, 11- first wear-resistant plate, 12- second wear-resistant plate, 41- cylinder, 42- hinged seat, 43- connecting block, 51- discharge tray, 52- insulation layer, 53- wheel, 54- lower chassis, 55- positioning pin hole, 56- rib plate, 57- anti-interference groove, 61- positioning structure, 71- screw lifter, 72- motor, 73- dual output shaft reducer, 74- transmission shaft, 75- commutator, 76- bearing seat, 77- support plate, 78- positioning pin, 79- guide rod, 80- arc positioning groove. DETAILED DESCRIPTION

[0036] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0037] like Figures 1 to 8 As shown, a hot pressing furnace includes a bracket 1, a furnace body 2 is arranged above the bracket 1, and a chassis 5 that can be raised and lowered is arranged at the bottom of the furnace body 2, that is, the utility model is a lifting and loading structure, and a discharge tray 51 is arranged on the chassis 5, and the discharge tray 51 can carry materials. Preferably, an insulation layer 52 is arranged between the discharge tray 51 and the chassis 5.

[0038] In order to avoid the traditional locking method, in the case of power outages and gas failures, the locking position becomes loose, causing production safety hazards, the utility model provides a rotary locking mechanism 4 on the bracket 1, and after the chassis 5 is raised and contacts the bottom of the furnace body 2, the chassis 5 can be locked to the bottom of the furnace body 2 through the rotary locking mechanism 4.

[0039] The rotary locking mechanism 4 includes a rotary disk 3 and a rotary driving device for driving the rotary disk 3 to rotate. A plurality of L-shaped blocks 8 are evenly distributed on the circumference of the bottom of the rotary disk 3, and the transverse blocks of the L-shaped blocks 8 point to the center of the rotary disk 3. A plurality of anti-interference grooves 57 are evenly distributed on the circumference of the side wall of the chassis 5 of the utility model. When the chassis 5 is raised, the L-shaped blocks 8 can be transferred to the bottom of the chassis 5 through the anti-interference grooves 57. A first locking inclined surface is provided at the bottom of the chassis 5, and a second locking inclined surface is provided above the transverse block of the L-shaped blocks 8. When the rotary disk 3 drives the L-shaped blocks 8 to rotate at the bottom of the chassis 5, the second locking inclined surface cooperates with the first locking inclined surface to lock the chassis 5 at the bottom of the furnace body 2.

[0040] With the above structure, even if the power is cut off and the air is cut off, the rotating disk 3 will not rotate, so there will be no problem of loosening of the locking position.

[0041] Specifically, the rotary drive device includes a cylinder 41, which is hinged on the bracket 1 through a hinge seat 42. The end of the cylinder rod of the cylinder 41 is hinged with a connecting block 43, and the connecting block 43 is connected to the turntable 3. The extension and contraction of the cylinder 41 will drive the turntable 3 to rotate through the connecting block 43. The utility model preferably arranges two rotary drive devices, and symmetrically arranges them on the brackets 1 on both sides of the furnace body 2. The turntable 3 is driven to rotate by the two rotary drive devices, thereby ensuring the stability of the rotation of the turntable 3.

[0042] In order to facilitate the connection and locking between the bottom of the furnace body 2 and the chassis 5, a furnace body connecting plate 9 is preferably provided at the bottom of the furnace body 2 of the utility model. The turntable 3 can rotate on the furnace body connecting plate 9. A wear-resistant structure 10 is preferably provided between the turntable 3 and the furnace body connecting plate 9. The wear-resistant structure 10 can be selected from a wear-resistant layer or a wear-resistant plate, etc.

[0043] The bottom of the chassis 5 of the utility model is provided with a first wear-resistant plate 11, a first locking bevel is arranged at the bottom of the first wear-resistant plate 11, a second wear-resistant plate 12 is arranged above the transverse block of the L-shaped block 8, and the second locking bevel is arranged above the second wear-resistant plate 12. The turntable 3 rotates, driving the L-shaped block 8 to rotate, so that the second wear-resistant plate 12 on the L-shaped block 8 is in contact with and locked with the first wear-resistant plate 11 on the chassis 5. Since the stroke selected by the cylinder 41 must be greater than the use stroke, the first wear-resistant plate 11 and the second wear-resistant plate 12 are matched with bevels, so within the propulsion stroke of the cylinder 41, the locking requirements of the chassis 5 and the furnace body connecting plate 9 can be guaranteed.

[0044] The bottom of the chassis 5 of the utility model is provided with a lifting device 7, which includes two screw lifts 71, and the two screw lifts 71 are connected to a lifting support plate 77, and the two support plates 77 are symmetrically arranged at the bottom of the chassis 5. The support plates 77 are provided with arc-shaped positioning grooves 80, and the chassis 5 can cooperate with the arc-shaped positioning grooves 80 on the two support plates 77. At least one positioning pin 78 is provided in the arc-shaped positioning groove 80, and preferably two are provided. The bottom of the chassis 5 is fixedly connected to the lower chassis 54, and the lower chassis 54 is provided with a positioning pin hole 55 to cooperate with the positioning pin 78 on the support plate 77. Through the above structure, the coaxiality of the chassis 5 and the furnace body 2 can be ensured during the lifting process, and the positioning pin 78 can prevent the chassis 5 from rotating during the locking process, thereby ensuring the locking effect.

[0045] Furthermore, the bottom of the lower chassis 54 of the utility model is preferably processed by fine processing to ensure flatness, and the bottom of the arc-shaped positioning groove 80 is preferably strengthened by a plurality of ribs 56 between the lower chassis 54 and the chassis 5 to ensure the strength of the lower chassis 54.

[0046] The lifting device 7 of the utility model also includes a motor 72, a dual-output shaft reducer 73 and two commutators 75. The motor 72 is connected to the dual-output shaft reducer 73. The two ends of the dual-output shaft reducer 73 are respectively connected to the two commutators 75 through a transmission shaft 74. The two commutators 75 are respectively connected to the two screw elevators 71 through the transmission shaft 74. Finally, one motor 72 is used to drive the two screw elevators 71 to rise and fall synchronously. In order to further improve the stability of the transmission process, all transmission shafts 74 are preferably supported by two bearing seats 76.

[0047] In the entire transmission system, the screw lift 71 converts the rotary motion of the transmission shaft 74 into a lifting motion, the transmission shaft 74 plays the role of transmitting torque, the commutator 75 plays the role of changing the direction of torque transmission, the dual-output shaft reducer 73 outputs the unidirectional torque into two directions, the motor 72 is the power element, and the bearing seat 76 plays a supporting and fixing role.

[0048] Each screw lift 71 is preferably equipped with two guide rods 79 to ensure the smooth lifting of the support plate 77. The screw lift 7 adopts a T-screw structure and uses a self-locking pitch. It can stop and self-lock at any lifting height position. The final lifting position is equipped with an induction switch to detect whether it is in place to ensure the accuracy of the lifting position.

[0049] The bottom of the support 1 of the utility model is provided with a guide rail 6, which can extend to the outside of the bottom of the furnace body 2, and the bottom of the chassis 5 is provided with a wheel 53 that cooperates with the guide rail 6. The wheel 53 can be derailed from the guide rail 6 without affecting the lifting of the chassis 5. The setting of the guide rail 6 of the utility model provides a basis for the transformation of the automated production line of the workshop in the later stage. The guide rail 6 is preferably provided with a positioning structure 61, which can locate the position of the chassis 5 on the guide rail 6 at the bottom of the furnace body 2.

[0050] The furnace body 2 preferably has a double-layer water-cooled furnace body 2, and a double-layer water-cooled furnace cover is detachably connected to the top of the furnace body 2 to facilitate later repair and maintenance. A heating part is also provided in the furnace body.

[0051] Specific working process:

[0052] 1. Load the material onto the discharge tray 51 of the chassis 5, and use manual pushing or a screw guide pair to move the chassis 5 along the guide rail 6 until it touches the positioning structure 61, and the chassis 5 is located just below the furnace body 2.

[0053] 2. When the chassis 5 needs to be lifted, the two screw lifts 71 on both sides are activated. During the lifting process, the positioning pins 78 on the support plate 77 cooperate with the positioning pin holes 55 on the lower chassis 54, and the screw lifts 71 lift the chassis 5 to the sealing position below the furnace body 2.

[0054] 3. The cylinder 41 drives the rotary disk 3 to rotate and drives the L-shaped block 8 to rotate, so that the second wear-resistant plate 12 on the L-shaped block 8 is in contact with and locked with the first wear-resistant plate 11 on the chassis 5 .

[0055] 4. The heating part in the furnace body 2 is heated and kept warm to achieve sintering or heating of the required materials.

[0056] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A hot pressing furnace, characterized in that: It comprises a support (1), a furnace body (2) is provided above the support (1), and a liftable chassis (5) is provided at the bottom of the furnace body (2); A lifting device (7) is provided at the bottom of the chassis (5), the lifting device (7) comprising two screw lifts (71), each of the two screw lifts (71) being connected to a liftable support plate (77), the two support plates (77) being symmetrically arranged at the bottom of the chassis (5); The support (1) is provided with a rotary locking mechanism (4), and after the chassis (5) is raised and contacts the bottom of the furnace body (2), the chassis (5) can be locked to the bottom of the furnace body (2) through the rotary locking mechanism (4).

2. A hot pressing furnace according to claim 1, characterized in that: The rotary locking mechanism (4) comprises a rotary disk (3) and a rotary driving device for driving the rotary disk (3) to rotate, a plurality of L-shaped clamping blocks (8) are evenly distributed on the circumference of the bottom of the rotary disk (3), and the lateral blocks of the L-shaped clamping blocks (8) point to the center of the rotary disk (3); The circumferential side wall of the chassis (5) is evenly distributed with a plurality of anti-interference grooves (57), and when the chassis (5) is raised, the L-shaped block (8) can be transferred to the bottom of the chassis (5) through the anti-interference grooves (57); A first locking inclined surface is provided at the bottom of the chassis (5), and a second locking inclined surface is provided above the transverse block of the L-shaped clamping block (8). When the rotating disk (3) drives the L-shaped clamping block (8) to rotate at the bottom of the chassis (5), the second locking inclined surface cooperates with the first locking inclined surface to lock the chassis (5) at the bottom of the furnace body (2).

3. A hot pressing furnace according to claim 2, characterized in that: The rotary drive device comprises a cylinder (41), wherein the cylinder (41) is hinged on the bracket (1), and a connecting block (43) is hinged on the end of the cylinder rod of the cylinder (41), and the connecting block (43) is connected to the rotary disk (3).

4. A hot pressing furnace according to claim 2, characterized in that: A furnace body connecting plate (9) is provided at the bottom of the furnace body (2), and the rotating plate (3) is capable of rotating on the furnace body connecting plate (9); A wear-resistant structure (10) is provided between the rotary disk (3) and the furnace body connecting disk (9).

5. A hot pressing furnace according to claim 2, characterized in that: A first wear-resistant plate (11) is provided at the bottom of the chassis (5), and the first locking inclined surface is provided at the bottom of the first wear-resistant plate (11); A second wear-resistant plate (12) is provided above the transverse block of the L-shaped clamping block (8), and the second locking inclined surface is provided above the second wear-resistant plate (12).

6. A hot pressing furnace according to claim 1, characterized in that: The lifting device (7) further comprises a motor (72), a dual-output shaft reducer (73) and two commutators (75); the motor (72) is connected to the dual-output shaft reducer (73); two ends of the dual-output shaft reducer (73) are respectively connected to the two commutators (75) via a transmission shaft (74); and the two commutators (75) are respectively connected to the two screw lifts (71) via the transmission shaft (74).

7. A hot pressing furnace according to claim 1, characterized in that: The support plates (77) are provided with arc-shaped positioning grooves (80), and the chassis (5) can cooperate with the arc-shaped positioning grooves (80) on the two support plates (77).

8. A hot pressing furnace according to claim 7, characterized in that: At least one positioning pin (78) is provided in the arc-shaped positioning groove (80); A lower chassis (54) is fixedly connected to the bottom of the chassis (5), and a positioning pin hole (55) is provided on the lower chassis (54) to cooperate with a positioning pin (78) on the support plate (77).

9. A hot pressing furnace according to claim 1, characterized in that: A guide rail (6) is provided at the bottom of the bracket (1), and the guide rail (6) can extend to the outside of the bottom of the furnace body (2). A wheel (53) cooperating with the guide rail (6) is provided at the bottom of the chassis (5).

10. A hot pressing furnace according to claim 9, characterized in that: The guide rail (6) is provided with a positioning structure (61), and the positioning structure (61) can position the bottom plate (5) on the guide rail (6) at the bottom of the furnace body (2).

Images