CN212311343U

CN212311343U - Sealing washer installation device

Info

Publication number: CN212311343U
Application number: CN202021197913.4U
Authority: CN
Inventors: 马朱惠; 吴浩; 杨吉平
Original assignee: Kunshan Myzy Fixture Technology Co Ltd
Current assignee: Kunshan Myzy Fixture Technology Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-01-08
Anticipated expiration: 2030-06-24

Abstract

The utility model belongs to the technical field of automatic installation, a sealing washer installation device is disclosed, a mounting groove for install the sealing washer on waiting to install the product in, this sealing washer installation device includes the support body, push mechanism and bears the seat, bear the seat including pushing up by piece and moving part, the piece links firmly in the support body by the piece on the top, the moving part activity sets up in the support body, logical groove has been seted up on the moving part, the piece is worn to locate logical inslot by the top, the top surface that the piece was leaned on the top encloses into the constant head tank with the lateral wall that leads to the groove, the constant head tank can the holding sealing washer and fix a position the sealing washer, push mechanism sets up on the support. The utility model provides a sealing washer installation device can realize the automatic installation sealing washer, uses manpower sparingly, improves work efficiency, guarantees moreover that the installation result is accurate reliable.

Description

Sealing washer installation device

Technical Field

The utility model belongs to the technical field of automatic installation, especially, relate to a sealing washer installation device.

Background

The sealing ring can prevent lubricating oil from leaking and foreign matters from invading, and a plurality of products require good air tightness and waterproof function, so the sealing ring is more and more widely used.

The traditional method is that the sealing ring is manually and slowly installed in the installation groove of the product to be installed, so that the manual operation has extremely complicated workload, the installation standard difference of different operators is large, the efficiency is low, the cost is high, and the large-batch operation is not easy to occur.

Therefore, a sealing ring installation device is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing washer installation device can realize the automatic installation sealing washer, uses manpower sparingly, improves work efficiency, guarantees moreover that the installation result is accurate reliable.

To achieve the purpose, the utility model adopts the following technical proposal:

a seal ring mounting device for mounting a seal ring in a mounting groove on a product to be mounted, the seal ring mounting device comprising:

a frame body;

the bearing seat comprises a propping piece and a moving piece, the propping piece is fixedly connected with the frame body, the moving piece is movably arranged on the frame body, a through groove is formed in the moving piece, the propping piece penetrates through the through groove, a positioning groove is formed by the top surface of the propping piece and the side wall of the through groove in a surrounding manner, and the positioning groove can contain the sealing ring and position the sealing ring;

the pushing mechanism is arranged on the frame body and can push the product to be installed to be close to and press the moving part.

Preferably, the bearing seat further comprises a base plate and an elastic component, the base plate is arranged on the frame body, the abutting member is fixedly connected to the base plate, one end of the elastic component is connected to the moving member, and the other end of the elastic component is connected to the base plate.

Preferably, the movable member comprises a positioning block and a plurality of adjusting blocks, the adjusting blocks are arranged around the positioning block and spaced from the positioning block, and gaps between the adjusting blocks and the positioning block are the through grooves;

the elastic assembly comprises a first elastic piece and a plurality of second elastic pieces, the positioning block is connected to the base plate through the first elastic piece, and the adjusting block is connected to the base plate through the second elastic pieces.

Preferably, a clamping block is arranged on the side face of the positioning block and corresponds to one adjusting block, a clamping surface facing the base plate is arranged on the adjusting block, the clamping block abuts against the clamping surface upwards in a natural state, the adjusting block inclines in a direction back to the positioning block so as to increase the width of the notch of the positioning groove, in a working state, a product to be installed presses down the positioning block, and the adjusting block resets to reduce the width of the notch of the positioning groove.

Preferably, the pushing mechanism includes:

the first driving assembly is arranged on the frame body;

the second driving assembly is connected to the output end of the first driving assembly, and the first driving assembly can drive the second driving assembly to be close to the bearing seat;

the mounting assembly is connected to the output end of the second driving assembly, the mounting assembly is used for mounting the product to be mounted, and the second driving assembly can drive the product to be mounted on the mounting assembly to press the movable piece.

Preferably, the installation component comprises a sliding frame and two baffle plates which are arranged on two sides of the bottom of the sliding frame respectively, each baffle plate and the sliding frame enclose a sliding groove, and the sliding grooves can be clamped with the products to be installed.

Preferably, a buckle is arranged at the notch at one end of the sliding groove, a clamping plate is arranged at the notch at the other end of the sliding groove, and the product to be installed can be clamped between the buckle and the clamping plate.

Preferably, the carriage includes the roof and sets up respectively in two curb plates of roof both sides, every be provided with one on the curb plate the baffle, the buckle link firmly in the curb plate, the one end of cardboard link firmly in the roof, the other end rotate connect in the curb plate, two the curb plate can move towards the direction that deviates from the other side and rotate to increase the interval between two buckles.

Preferably, a first torsion spring is arranged at the joint of the side plate and the catch plate.

Preferably, a second torsion spring is arranged at the joint of the baffle plate and the side plate, and the baffle plate can rotate relative to the side plate to open the sliding groove.

The utility model has the advantages that:

the utility model provides a sealing washer installation device, the top is by the constant head tank that piece and moving part formed can place the sealing washer and fix a position the sealing washer, and push mechanism can promote to wait to install the product orientation and bear the seat and remove to support and lean on pressing down the moving part, the moving part moves down, because the top is by the piece and link firmly in the support body, when the moving part moves down, the top is by the piece for the moving part rebound, the sealing washer is under the supporting role by the piece on the top, for waiting to install the product and shift up, thereby push into the mounting groove with the sealing washer. The utility model provides a sealing washer installation device can realize the automatic installation sealing washer, uses manpower sparingly, improves work efficiency, guarantees moreover that the installation result is accurate reliable.

Drawings

Fig. 1 is a schematic structural diagram of a sealing ring mounting device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a load-bearing seat provided in an embodiment of the present invention;

fig. 3 is an exploded view of a supporting base according to an embodiment of the present invention;

fig. 4 is a perspective view of a load-bearing seat provided by an embodiment of the present invention in a natural state;

fig. 5 is a perspective view of a load-bearing seat provided by an embodiment of the present invention in an operating state;

fig. 6 is a schematic structural diagram of a pushing mechanism provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an assembly of a mounting assembly and a product to be mounted according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a first viewing angle of a mounting assembly provided by an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a second viewing angle of the mounting assembly provided by the embodiment of the present invention;

fig. 10 is a schematic structural view of a product to be mounted pushed into the mounting assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a mounting assembly according to an embodiment of the present invention when a product to be mounted is dismounted.

In the figure:

10. a product to be installed; 20. mounting grooves; 30. a seal ring;

1. a pushing mechanism; 2. a bearing seat; 3. a frame body;

11. a first drive assembly; 12. a second drive assembly; 13. mounting the component; 21. a backup member; 22. a movable member; 23. positioning a groove; 24. a first elastic member; 25. a second elastic member; 26. a substrate; 31. a chassis; 32. a support frame;

111. a slide rail; 112. a lower mounting plate; 121. a second driving member; 131. a mounting seat; 132. a baffle plate; 133. buckling; 134. clamping a plate; 135. a first torsion spring; 136. a second torsion spring; 221. positioning blocks; 222. an adjusting block; 223. a clamping block;

1311. a top plate; 1312. side plates.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts throughout, or parts having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "mounted" are to be construed broadly and can include, for example, a mounted connection, a removable connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, unless otherwise expressly specified or limited, the feature "on" or "under" the second feature may include the feature and the second feature being in direct contact, or may include the feature and the second feature being in contact not directly but with another feature in between. Also, a feature "on," "above," and "above" a second feature includes a feature that is directly above and obliquely above the second feature, or simply means that the feature is at a higher level than the second feature. Features "below," "beneath," and "beneath" a second feature include the feature being directly below and obliquely below the second feature, or merely indicating that the feature is at a lesser level than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 7, the embodiment provides a sealing ring installation device, which is used for installing a sealing ring 30 in an installation groove 20 of a product 10 to be installed, the sealing ring installation device includes a frame body 3, a pushing mechanism 1 and a bearing seat 2, the bearing seat 2 includes a propping member 21 and a moving member 22, the propping member 21 is fixedly connected to the frame body 3, the moving member 22 is movably disposed on the frame body 3, a through groove is formed in the moving member 22, the propping member 21 is inserted into the through groove, a positioning groove 23 is defined by the top surface of the propping member 21 and the side wall of the through groove, and the positioning groove 23 can accommodate the sealing ring 30 and position the sealing ring 30; the pushing mechanism 1 is disposed on the frame body 3, and the pushing mechanism 1 can push the product 10 to be mounted to approach and press the movable member 22.

The sealing ring installation device provided by the embodiment, the positioning groove 23 formed by the abutting piece 21 and the moving piece 22 can be used for placing the sealing ring 30 and positioning the sealing ring 30, the pushing mechanism 1 can push the product 10 to be installed to move towards the bearing seat 2 and abut against and press the moving piece 22, the moving piece 22 moves downwards, because the abutting piece 21 is fixedly connected to the frame body 3, when the moving piece 22 moves downwards, the abutting piece 21 moves upwards relative to the moving piece 22, and the sealing ring 30 moves upwards relative to the product 10 to be installed under the supporting effect of the abutting piece 21, so that the sealing ring 30 is abutted into the installation groove 20. The sealing ring installation device provided by the embodiment can realize automatic installation of the sealing ring 30, saves labor, improves the working efficiency, and ensures that the installation result is accurate and reliable.

Specifically, the carrier 2 further includes a base plate 26 and an elastic element, the base plate 26 is disposed on the frame body 3, the abutting member 21 is fixedly connected to the base plate 26, one end of the elastic element is connected to the movable member 22, and the other end of the elastic element is connected to the base plate 26. As shown in fig. 4, due to the arrangement of the elastic component, the movable member 22 can move up and down relative to the base plate 26, and the abutting member 21 is fixed to the base plate 26, so that the movable member 22 can move up and down relative to the abutting member 21, so that when the movable member 22 is pressed down, the abutting member 21 moves up relative to the movable member 22 and the product 10 to be mounted.

As shown in fig. 2 to 4, the movable member 22 includes a positioning block 221 and a plurality of adjusting blocks 222, the adjusting blocks 222 are disposed around the positioning block 221 and spaced from the positioning block 221, and gaps between the adjusting blocks 222 and the positioning block 221 are through grooves; the elastic assembly includes a first elastic member 24 and a plurality of second elastic members 25, the positioning block 221 is connected to the base plate 26 through the first elastic member 24, and the adjusting block 222 is connected to the base plate 26 through the second elastic members 25. In this embodiment, four adjusting blocks 222 are provided, the four adjusting blocks 222 are respectively provided on four sides of the positioning block 221, and the sealing ring 30 is located between the positioning block 221 and the adjusting blocks 222. Due to the arrangement of the first elastic member 24 and the second elastic member 25, when the product 10 to be installed is pressed, the positioning block 221 and the adjusting block 222 move downwards relative to the abutting member 21, so that the sealing ring 30 is pushed into the installation groove 20.

Specifically, a fixture block 223 is arranged on the side surface of the positioning block 221 corresponding to one of the adjusting blocks 222, the adjusting block 222 is provided with a clamping surface facing the base plate 26, the fixture block 223 abuts against the clamping surface, in a natural state, the fixture block 223 abuts against the clamping surface upwards, the adjusting block 222 inclines in a direction away from the positioning block 221 so as to increase the width of the notch of the positioning groove 23, in a working state, the product 10 to be installed presses down the positioning block 221 to drive the fixture block 223 to move downwards, the adjusting block 222 resets so as to reduce the width of the notch of the positioning groove 23 and position the sealing ring 30. In a natural state, the position of the locking block 223 is high, the locking block 223 abuts against the locking surface to lift one side of the adjusting block 222, and the other side of the locking block 223 is low due to the connection of the second elastic element 25, so that the adjusting block 222 inclines in a direction away from the positioning block 221, the width of the notch of the positioning groove 23 is increased, and the sealing ring 30 can be conveniently placed in the notch. In the operating state, the positioning block 221 is pressed downward, the first elastic member 24 is compressed, the positioning block 221 moves downward, and the adjusting block 222 is restored to the horizontal state under the action of the second elastic member 25, so that the width of the notch of the positioning groove 23 is reduced, and the sealing ring 30 is positioned. In order to accurately push the sealing ring 30 from the positioning groove 23 into the mounting groove 20, the positioning groove 23 and the mounting groove 20 have the same shape, and the positioning groove 23 and the mounting groove 20 are aligned when the mover 22 is pressed. The positioning of the seal ring 30 is used for aligning the seal ring 30 with the mounting groove 20, thereby ensuring the accurate mounting of the seal ring 30. When the product 10 to be installed leaves the positioning block 221, the positioning block 221 floats upwards under the action of the first elastic member 24, and drives the adjusting block 222 to float upwards to an inclined state, so as to prepare for installing the next sealing ring 30. As shown in fig. 3, in order to ensure that the locking block 223 is not blocked by the abutting member 21 when moving up and down along with the positioning block 221, a movable groove is formed at a corresponding position of the abutting member 21, the locking block 223 is movably inserted into the movable groove, one end of the locking block 223 is connected to the positioning block 221, and the other end of the locking block 223 abuts against the locking block 223.

As shown in fig. 1, the frame body 3 includes a bottom frame 31 and a supporting frame 32, the supporting frame 32 is disposed on the bottom frame 31, the bottom frame 31 is mounted on the workbench, the bearing seat 2 is disposed on the bottom frame 31, the pushing mechanism 1 is disposed on the supporting frame 32, the bearing seat 2 is located under the pushing mechanism 1, and the pushing mechanism 1 can vertically drive the product 10 to be mounted to move up and down.

As shown in fig. 6, the pushing mechanism 1 includes a first driving assembly 11, a second driving assembly 12 and a mounting assembly 13, wherein the first driving assembly 11 is disposed on the frame body 3; the second driving assembly 12 is connected to the output end of the first driving assembly 11, and the first driving assembly 11 can drive the second driving assembly 12 to approach the bearing seat 2; the mounting component 13 is connected to the output end of the second driving component 12, the mounting component 13 is used for mounting the product 10 to be mounted, and the second driving component 12 can drive the product 10 to be mounted on the mounting component 13 to press the movable piece 22. The first drive assembly 11 and the second drive assembly 12 are driven in the same direction and both move in the vertical direction. In this embodiment, the first driving assembly 11 is disposed on the supporting frame 32, the first driving assembly 11 and the second driving assembly 12 realize the secondary movement of the product 10 to be installed, the first driving assembly 11 is used to rapidly drive the product 10 to be installed to move close to the movable element 22, and the second driving assembly 12 is used to drive the product 10 to be installed to accurately press the movable element 22.

Specifically, the first driving assembly 11 includes a first driving member, a sliding frame and a sliding rail 111, the first driving member is disposed on the supporting frame 32, the sliding rail 111 is vertically disposed on the supporting frame 32, an output end of the first driving member is connected to the sliding frame, the sliding frame is slidably connected to the sliding rail 111, the second driving assembly 12 is disposed on the sliding frame, and the first driving member can drive the sliding frame to move along the sliding rail 111, so as to drive the second driving assembly 12 to move.

As shown in fig. 6 and 11, the second driving assembly 12 includes a second driving member 121, the carriage of the first driving assembly 11 includes an upper mounting plate, a lower mounting plate 112 and a plurality of connecting struts, one end of each connecting strut is connected to the upper mounting plate, the other end of each connecting strut is connected to the lower mounting plate 112, the second driving member 121 is mounted on the upper mounting plate, a through hole is formed in the lower mounting plate 112, and an output end of the second driving member 121 passes through the through hole and is connected to the mounting assembly 13.

As shown in fig. 7, the mounting assembly 13 includes a mounting seat 131 and two baffles 132 respectively disposed on two sides of the bottom of the mounting seat 131, each baffle 132 and the mounting seat 131 enclose a sliding slot, and the two sliding slots can be engaged with the product 10 to be mounted. The two parallel and in opposite directions of spout set up, wait that the both sides of installing product 10 joint respectively in two spouts, will wait to install product 10 and stabilize and get the installation.

As shown in fig. 7 and 8, a buckle 133 is arranged at the notch at one end of the chute, a clamping plate 134 is arranged at the notch at the other end, and the product 10 to be installed can be clamped between the buckle 133 and the clamping plate 134. Buckle 133 and cardboard 134 are located the both ends of spout respectively, can block waiting to install product 10 between buckle 133 and cardboard 134, prevent to wait to install product 10 roll-off.

As shown in fig. 8 to 11, the mounting seat 131 includes a top plate 1311 and two side plates 1312 respectively disposed on two sides of the top plate 1311, a baffle 132 is disposed on each side plate 1312, the latch 133 is fixedly connected to the side plate 1312, one end of the latch 134 is fixedly connected to the top plate 1311, and the other end is rotatably connected to the side plate 1312, and the two side plates 1312 can rotate in a direction away from each other to increase a distance between the two latches 133. In this embodiment, the side plates 1312 and the clamping plate 134 are rotatably connected through a first shaft pin, a first torsion spring 135 is sleeved on the first shaft pin, one side plate 1312 can rotate around the first shaft pin towards a direction deviating from the other side plate 1312, so that the distance between the two buckles 133 is increased, and the product 10 to be installed can be pushed in from the end of the chute where the buckle 133 is arranged, after the product 10 to be installed is installed in place, under the action of the first torsion spring 135, the side plates 1312 automatically reset, so that the distance between the two buckles 133 is restored, and the clamping effect is achieved.

Specifically, the terminal surface that buckle 133 deviates from cardboard 134 is the circular arc spigot surface, waits to install product 10 and pushes the spout from between two buckles 133, under the effect of circular arc spigot surface, along with waiting to install the entering of product 10, the distance between two buckles 133 increases gradually, can save the manpower and rotate the process that the product 10 was waited to install in the installation of curb plate 1312.

More specifically, the shutter 132 and the side plate 1312 are rotatably coupled by a second shaft pin on which the second torsion spring 136 is sleeved. When the product 10 to be mounted needs to be removed, the chute is opened by rotating the baffle 132 in a direction away from the other baffle 132, and the product 10 to be mounted loses the support of the baffle 132 and is directly pulled out from the lower side, so that the removal is completed, as shown in fig. 11.

In this embodiment, the first driving member and the second driving member 121 are both air cylinders, the strokes of the two air cylinders are different, and the stroke of the first driving member is larger than that of the second driving member 121. The first elastic member 24 and the second elastic member 25 are both springs.

The steps of using the sealing ring installation device provided by the embodiment to install the sealing ring are as follows:

firstly, the product 10 to be installed is pushed in from the end of the chute where the buckle 133 is arranged, under the action of the abutting of the product 10 to be installed, the two side plates 1312 rotate in the direction away from each other, after the product 10 to be installed is pushed in place, the two side plates 1312 rotate oppositely to form clamping, and the installation of the product 10 to be installed is completed.

Then, the sealing ring 30 is placed in the positioning groove 23, the first driving piece is started, the product 10 to be installed is driven to move downwards to be attached to the movable piece 22, and the first driving piece is closed; and starting the second driving part 121 to drive the product 10 to be installed to continuously move downwards, pressing the movable piece 22, moving the positioning block 221 downwards, resetting the adjusting block 222, and positioning the sealing ring 30.

Finally, the movable piece 22 is continuously pressed, the abutting piece 21 supports the sealing ring 30 to move upwards relative to the product 10 to be installed, the sealing ring 30 is pushed out from the positioning groove 23 until the sealing ring is pushed into the installation groove 20, and then the installation of the sealing ring 30 is completed.

After the sealing ring 30 is completely installed, the two baffles 132 are respectively rotated to both sides to open the sliding groove, thereby completing the disassembly of the installed product 10 to be installed.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A sealing ring mounting device for mounting a sealing ring (30) in a mounting groove (20) on a product (10) to be mounted, characterized in that the sealing ring mounting device comprises:

a frame body (3);

the bearing seat (2) comprises a propping piece (21) and a moving piece (22), the propping piece (21) is fixedly connected with the frame body (3), the moving piece (22) is movably arranged on the frame body (3), a through groove is formed in the moving piece (22), the propping piece (21) penetrates through the through groove, a positioning groove (23) is defined by the top surface of the propping piece (21) and the side wall of the through groove, and the positioning groove (23) can contain the sealing ring (30) and position the sealing ring (30);

push mechanism (1), set up in on support body (3), push mechanism (1) can promote wait to install product (10) and be close to and press moving part (22).

2. A seal ring mounting device according to claim 1, wherein the carrier (2) further comprises a base plate (26) and an elastic member, the base plate (26) is disposed on the frame body (3), the abutting member (21) is fixedly connected to the base plate (26), one end of the elastic member is connected to the movable member (22), and the other end of the elastic member is connected to the base plate (26).

3. The sealing ring mounting device according to claim 2, wherein the movable member (22) comprises a positioning block (221) and a plurality of adjusting blocks (222), the adjusting blocks (222) are arranged around the positioning block (221) and spaced from the positioning block (221), and a gap between the adjusting blocks (222) and the positioning block (221) is the through groove;

the elastic assembly comprises a first elastic piece (24) and a plurality of second elastic pieces (25), the positioning block (221) is connected to the base plate (26) through the first elastic piece (24), and the adjusting block (222) is connected to the base plate (26) through the second elastic pieces (25).

4. The sealing ring mounting device according to claim 3, wherein a clamping block (223) is disposed on a side surface of the positioning block (221) corresponding to one of the adjusting blocks (222), the adjusting block (222) has a clamping surface facing the base plate (26), the clamping block (223) abuts against the clamping surface, in a natural state, the clamping block (223) abuts against the clamping surface upwards, the adjusting block (222) is inclined in a direction away from the positioning block (221) to increase the width of the notch of the positioning groove (23), in an operating state, the product (10) to be mounted presses down the positioning block (221), and the adjusting block (222) resets to decrease the width of the notch of the positioning groove (23).

5. A seal ring mounting arrangement according to claim 1, characterized in that the pushing mechanism (1) comprises:

the first driving assembly (11) is arranged on the frame body (3);

the second driving assembly (12) is connected to the output end of the first driving assembly (11), and the first driving assembly (11) can drive the second driving assembly (12) to be close to the bearing seat (2);

the mounting component (13) is connected to the output end of the second driving component (12), the mounting component (13) is used for mounting the product (10) to be mounted, and the second driving component (12) can drive the product (10) to be mounted on the mounting component (13) to press the movable piece (22).

6. The seal ring mounting device as claimed in claim 5, characterized in that the mounting assembly (13) comprises a sliding frame (131) and two retaining plates (132) respectively arranged on two sides of the bottom of the sliding frame (131), each retaining plate (132) and the sliding frame (131) enclosing a sliding groove, and the two sliding grooves can be clamped with the product (10) to be mounted.

7. A sealing ring mounting device according to claim 6, characterized in that a buckle (133) is arranged at the notch of one end of the chute, a clamping plate (134) is arranged at the notch of the other end, and the product (10) to be mounted can be clamped between the buckle (133) and the clamping plate (134).

8. The seal ring mounting device as claimed in claim 7, wherein the sliding frame (131) comprises a top plate (1311) and two side plates (1312) respectively arranged at two sides of the top plate (1311), each side plate (1312) is provided with one baffle (132), the fasteners (133) are fixedly connected to the side plates (1312), one end of each fastener plate (134) is fixedly connected to the top plate (1311), the other end of each fastener plate is rotatably connected to the side plate (1312), and the two side plates (1312) can rotate towards a direction away from each other to increase the distance between the two fasteners (133).

9. A seal ring mounting arrangement as claimed in claim 8, characterized in that a first torsion spring (135) is provided at the junction of the side plate (1312) and the catch plate (134).

10. The gasket mounting arrangement of claim 8, wherein a second torsion spring (136) is provided at the junction of the flap (132) and the side plate (1312), the flap (132) being rotatable relative to the side plate (1312) to open the chute.