Transmission sealing structure of hot pressing sintering machine

Abstract

The utility model relates to the technical field of sealing, and discloses a transmission sealing structure of a hot pressing sintering machine, which comprises a placement plate, a sleeve fixedly mounted at the center of the placement plate, a first support plate fixedly mounted on the front side of the placement plate, and a second support plate fixedly mounted on the rear side of the placement plate, the upper side of the first supporting plate and the upper side of the second supporting plate are rotationally provided with the same rotating shaft through bearing seats, and the rotating shaft coaxially penetrates through the sleeve. A rubber sleeve is arranged between the rotating shaft and the sleeve in a sleeving mode, a disc body is fixedly mounted at the front end of the rubber sleeve, two symmetrically-formed first guide grooves are formed in the first supporting plate in the direction parallel to the placement plate, and first I-shaped blocks are slidably mounted in the first guide grooves correspondingly; linkage arms are rotationally installed between the left side and the right side of the disc body and the first I-shaped blocks correspondingly, and the first supporting plate is provided with a driving assembly used for oppositely moving the first I-shaped blocks. The sealing device is stable and reliable in sealing performance, long in service life and capable of guaranteeing the efficiency and effect of vacuumizing work.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing technical field, concretely is the transmission sealing structure of hot press sintering machine. BACKGROUND

[0002] In order to improve productivity, the sintering chamber, heat treatment chamber and cooling chamber in the hot press sintering machine are connected in series through the conveyor, and the gate valve at the chamber door is used to realize sealing between each treatment chamber during work to avoid mutual interference.

[0003] However, it is inevitable that the external deceleration motor needs to be connected with the high-temperature-resistant conveyor in the treatment chamber, and a through hole for passing through the transmission shaft needs to be formed on the side wall of the treatment chamber, especially in the treatment chamber environment requiring vacuumizing, the poor sealing performance of the through hole will affect the efficiency and effect of vacuumizing work; currently, a rotary sealing part is usually arranged between the transmission shaft and the through hole to ensure sealing, but the repeated stress of negative pressure will cause the rubber ring in the rotary sealing part to deform or jam, thereby greatly reducing the service life.

[0004] Therefore, in order to solve the above problems, the transmission sealing structure of the hot press sintering machine is provided. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing the transmission sealing structure of hot press sintering machine, and the sealing performance is stable and reliable, can guarantee the efficiency and effect of vacuumizing work, thereby solving the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: the transmission sealing structure of hot press sintering machine, including the installation plate, the center of installation plate is fixedly installed with the sleeve, the front side of installation plate is fixedly installed with the first support plate, and the rear side of installation plate is fixedly installed with the second support plate, the same rotating shaft is rotatably installed on the upper side of first support plate and second support plate through bearing seat, and the rotating shaft passes through the sleeve coaxially;Rubber sleeve is sleeved between the rotating shaft and the sleeve, the front end of rubber sleeve is fixedly installed with the disc body, two symmetrical first guide grooves are formed in the direction parallel to the installation plate of the first support plate, the first guide groove is slidably installed with the first I-shaped block, the left and right sides of disc body are rotatably installed with the connecting arm between first I-shaped block, and the first support plate is installed with the drive assembly for moving first I-shaped block.

[0007] Specifically, the drive assembly includes a push-pull electromagnet and a rotating seat, the lower side of the first I-shaped block is rotatably installed with the rotating seat, and the same push-pull electromagnet is fixedly installed between the rotating seats.

[0008] Specific, the drive assembly further includes a second guide groove and a second work type block, the first support plate is provided with a second guide groove along the direction perpendicular to the setting plate, the second guide groove is centrally located between the two first guide grooves, the second guide groove is slidably installed with a second work type block, the lower side of the second work type block is rotatably installed with two symmetrically arranged connecting rods, the ends of the connecting rods away from the second work type block are rotatably assembled with the lower side of the first work type block.

[0009] Further, the two connecting rods are of the same length and always in V shape.

[0010] Specific, the rubber sleeve is a circular truncated cone, the large diameter end of the rubber sleeve is fixedly assembled with the disc body, the inside of the sleeve is a circular truncated cone through groove, and the slope of the circular truncated cone through groove is greater than that of the rubber sleeve.

[0011] Specific, the circumferential side of the rubber sleeve is uniformly provided with a wedge-shaped groove, the width of the end of the wedge-shaped groove away from the disc body is greater than that of the end close to the disc body, and the rubber claws are formed between the wedge-shaped grooves.

[0012] Further, the end of the rubber claw away from the disc body is fixedly installed with an arc-shaped graphite block, and the end of the sleeve away from the disc body is fixedly installed with a baffle disc.

[0013] Further, the disc body and the arc-shaped graphite block are fixedly installed with connecting columns on the sides close to each other, the connecting columns are uniformly distributed in the circumferences, and the circumferential sides of the connecting columns are uniformly fixedly installed with connecting rings.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Through the two first work type blocks synchronously moved by the drive assembly, the rubber sleeve and other structures on the disc body can be pushed and pulled through the two connecting arms, the rubber sleeve can be tightly sealed when being pushed into the space between the rotating shaft and the sleeve, and the rotating shaft can be braked, the rotating resistance of the rotating shaft is small when the rubber sleeve is pulled out, the driving is beneficial, the sealing performance is stable and reliable, the service life is long, and the efficiency and effect of vacuumizing work can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic perspective view of the utility model angle one;

[0017] Figure 2 It is a structural schematic perspective view of the utility model angle two;

[0018] Figure 3 It is a structural schematic partial cross-sectional view of the inside of the sleeve of the utility model;

[0019] Figure 4 It is a structural schematic cross-sectional view of the rubber sleeve of the utility model.

[0020] In the figure: 1 is a setting plate, 2 is a rotating shaft, 3 is a sleeve, 4 is a rubber sleeve, 5 is a disc body, 6 is a first work block, 7 is a first support plate, 8 is a bearing seat, 9 is a first guide slot, 10 is a connecting arm, 11 is a second support plate, 12 is a second guide slot, 13 is a push-pull electromagnet, 14 is a rotating seat, 15 is a second work block, 16 is a connecting rod, 17 is an arc-shaped graphite block, 18 is a connecting column, 19 is a connecting ring, and 20 is a blocking disc. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figure 1 and Figure 2 The utility model provides a kind of transmission sealing structure of hot-pressing sintering machine, including setting plate 1, sleeve 3 is fixedly installed at the center of setting plate 1, first support plate 7 is fixedly installed on the front side of setting plate 1, and second support plate 11 is fixedly installed on the back side of setting plate 1, the same rotating shaft 2 is rotatably installed on the upper side of first support plate 7 and second support plate 11 by bearing seat 8, rotating shaft 2 coaxially passes through sleeve 3;Setting plate 1 can be installed on the side wall of each processing chamber by screw and sealing ring, while the front end of rotating shaft 2 is connected with external speed reducer motor by torsion protector, and the rear end of rotating shaft 2 is connected with the rotating roller of high-temperature resistant conveyor inside processing chamber by shaft coupling, to realize power transmission.

[0023] Rubber sleeve 4 is sleeved between rotating shaft 2 and sleeve 3, the front end of rubber sleeve 4 is fixedly installed with disc body 5, first support plate 7 is provided with two symmetrical first guide slots 9 along the direction parallel to setting plate 1, first work block 6 is slidably installed in the inside of first guide slot 9, connecting arm 10 is rotatably installed between the left and right sides of disc body 5 and first work block 6 by column pin structure, and first support plate 7 is provided with drive assembly for moving first work block 6 oppositely;Drive assembly can oppositely (mutually close or mutually away) move first work block 6 in two first guide slots 9 by control, to change the included angle between two connecting arms 10, and then push and pull disc body 5 along the axial direction of rotating shaft 2, and rubber sleeve 4 is tightly expanded between rotating shaft 2 and sleeve 3 when pushing, to complete sealing, at this time, rotating shaft 2 also has braking effect, and the expansion state of rubber sleeve 4 is released when pulling out, and rotating shaft 2, sleeve 3 and rubber sleeve 4 are gap matched, at this time, rotating shaft 2 can also rotate.

[0024] Specifically, the driving assembly comprises a push-pull electromagnet 13 and a rotating seat 14, the lower side of each of the first I-shaped blocks 6 is rotatably provided with the rotating seat 14, and the same push-pull electromagnet 13 is fixedly arranged between the rotating seats 14; the push-pull electromagnet 13 is a prior component capable of being shortened when powered and being lengthened when powered off, and can change the distance between the two first I-shaped blocks 6 through the rotating seat 14 and act rapidly.

[0025] To improve the synchronization of the opposite movement of the two first I-shaped blocks 6, the driving assembly further comprises a second guide groove 12 and a second I-shaped block 15, the first supporting plate 7 is provided with the second guide groove 12 along a direction perpendicular to the mounting plate 1, the second guide groove 12 is centrally arranged between the two first guide grooves 9, the second guide groove 12 is slidably provided with the second I-shaped block 15, the lower side of the second I-shaped block 15 is rotatably provided with two symmetrically arranged connecting rods 16 through a pin structure, and the ends of the connecting rods 16 away from the second I-shaped block 15 are rotatably assembled with the lower sides of the first I-shaped blocks 6 through a pin structure; the two connecting rods 16 are of the same length and always in a V shape, so that when the two first I-shaped blocks 6 move oppositely, the second I-shaped block 15 can be adaptively translated along the second guide groove 12 through the transmission of the two connecting rods 16, to ensure the symmetry and synchronization of the actions of the two first I-shaped blocks 6, so as to ensure the stability of the disc body 5 in the axial push-pull movement.

[0026] As shown in Figure 3 , the rubber sleeve 4 is in a circular truncated cone shape, the large-diameter end of the rubber sleeve 4 is fixedly assembled with the disc body 5, the inside of the sleeve 3 is a circular truncated cone-shaped through groove, and the slope of the circular truncated cone-shaped through groove is greater than the slope of the rubber sleeve 4; in this way, the rubber sleeve 4 can be better tightened when being pushed into the space between the rotating shaft 2 and the sleeve 3, and the sealing performance can be improved.

[0027] The circumferential side of the rubber sleeve 4 is uniformly provided with wedge-shaped grooves, the width of the end of each wedge-shaped groove away from the disc body 5 is greater than the width of the end close to the disc body 5, and the wedge-shaped grooves form rubber claws therebetween; the wedge-shaped grooves make the rubber claws have better elastic properties, which is beneficial to the tightening and resetting.

[0028] To improve the heat insulation performance and ensure the service life of the rubber sleeve 4, the end of each rubber claw away from the disc body 5 is fixedly provided with an arc-shaped graphite block 17, and the end of the sleeve 3 away from the disc body 5 is fixedly provided with a baffle 20; when the rubber sleeve 4 is pushed into the space between the rotating shaft 2 and the sleeve 3 and is tightened, the baffle 20 plays a limiting role and abuts against the arc-shaped graphite blocks 17 spliced into a circular ring, so as to reduce the inner-outer communication gap and also have excellent heat insulation performance due to the graphite material of the arc-shaped graphite blocks 17.

[0029] As shown in Figure 4As shown, the disc body 5 and the arc-shaped graphite block 17 are fixedly installed with connecting columns 18 on the side close to each other, the connecting columns 18 are uniformly distributed in a circle, and the connecting columns 18 are uniformly fixedly installed with connecting rings 19 on the circumferential side; the connecting columns 18 and the connecting rings 19 are embedded in the process of making the rubber sleeve 4 to form a whole with firm connection, so as to avoid separation in the process of repeated pushing and pulling.

[0030] Working principle:

[0031] After the structure is installed through the setting plate 1 and the front and rear ends of the rotating shaft 2 are connected and installed, the external speed reducer motor can transmit power to the internal high-temperature-resistant conveyor through the rotating shaft 2;

[0032] When vacuumizing is needed, the push-pull electromagnet 13 in the control driving assembly is powered to contract, drives the two first I-shaped blocks 6 to move close to each other along the first guide groove 9, so as to reduce the included angle between the two connecting arms 10, and through the coordination of the connecting rod 16 and the second I-shaped block 15, the symmetry and synchronization of the movement of the two first I-shaped blocks 6 are ensured, the disc body 5 can be buckled on the front end of the sleeve 3, at this time, the arc-shaped graphite block 17 spliced into a circular ring abuts against the baffle 20, plays a temperature insulation role, and the deformed rubber sleeve 4 is tightly sealed between the rotating shaft 2 and the sleeve 3, so as to improve the efficiency of vacuumizing;

[0033] After the vacuum environment is released, the push-pull electromagnet 13 in the control driving assembly is powered off to elongate, drives the two first I-shaped blocks 6 to move away from each other along the first guide groove 9, so as to reset the connecting arms 10 and pull out the disc body 5 and the rubber sleeve 4 and the like.

[0034] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims to which they relate.

[0035] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A drive seal structure of a hot press sintering machine, comprising a seating plate (1), characterized in that: The center of the setting plate (1) is fixedly installed with a sleeve (3), the front side of the setting plate (1) is fixedly installed with a first support plate (7), and the rear side of the setting plate (1) is fixedly installed with a second support plate (11), the upper side of the first support plate (7) and the second support plate (11) is rotatably installed with the same rotating shaft (2) through the bearing seat (8), the rotating shaft (2) coaxially passes through the sleeve (3); the rotating shaft (2) and the sleeve (3) are sleeved with a rubber sleeve (4), the front end of the rubber sleeve (4) is fixedly installed with a disc body (5), the first support plate (7) is opened with two symmetrically arranged first guide grooves (9) along the direction parallel to the setting plate (1), the inside of the first guide groove (9) is slidably installed with a first work-shaped block (6), the left and right sides of the disc body (5) are rotatably installed with a connecting arm (10) between the first work-shaped block (6), and the first support plate (7) is installed with a driving assembly for moving the first work-shaped block (6) in opposition.

2. The drive seal structure of a hot press sintering machine according to claim 1, characterized by: The driving assembly comprises a push-pull electromagnet (13) and a rotating seat (14), the lower side of the first work-shaped block (6) is rotatably installed with the rotating seat (14), and the rotating seat (14) is fixedly installed with the same push-pull electromagnet (13) between them.

3. The drive seal structure of a hot press sintering machine according to claim 2, characterized by: The driving assembly further comprises a second guide groove (12) and a second work-shaped block (15), the first support plate (7) is opened with a second guide groove (12) along the direction perpendicular to the setting plate (1), the second guide groove (12) is arranged between the two first guide grooves (9) in the middle, the second guide groove (12) is slidably installed with a second work-shaped block (15), the lower side of the second work-shaped block (15) is rotatably installed with two symmetrically arranged connecting rods (16), and the ends of the connecting rods (16) away from the second work-shaped block (15) are rotatably assembled with the lower sides of the first work-shaped blocks (6).

4. The drive seal structure of a hot press sintering machine according to claim 3, characterized by: The two connecting rods (16) are of the same length and always in V shape.

5. The drive seal structure of a hot press sintering machine according to claim 1, characterized by: The rubber sleeve (4) is a circular truncated cone, the large diameter end of the rubber sleeve (4) is fixedly assembled with the disc body (5), the inside of the sleeve (3) is a circular truncated cone through groove, and the slope of the circular truncated cone through groove is greater than that of the rubber sleeve (4).

6. The drive seal structure of a hot press sintering machine according to claim 1, characterized by: The circumference of the rubber sleeve (4) is uniformly opened with a wedge-shaped groove, the width of the end of the wedge-shaped groove away from the disc body (5) is greater than that of the end close to the disc body (5), and the wedge-shaped grooves form rubber claws.

7. The drive seal structure of a hot press sintering machine according to claim 6, characterized by: The ends of the rubber claws away from the disc body (5) are fixedly installed with arc-shaped graphite blocks (17), and the end of the sleeve (3) away from the disc body (5) is fixedly installed with a baffle disc (20).

8. The drive seal structure of a hot press sintering machine according to claim 6, characterized by: The sides of the disc body (5) and the arc-shaped graphite blocks (17) close to each other are fixedly installed with connecting columns (18), the connecting columns (18) are circumferentially and uniformly distributed, and the circumference of the connecting column (18) is uniformly fixedly installed with a connecting ring (19).

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