CN221161248U

CN221161248U - Rubber ring blanking die

Info

Publication number: CN221161248U
Application number: CN202322771842.4U
Authority: CN
Inventors: 周永照
Original assignee: Xiamen Baodetec Rubber Co ltd
Current assignee: Xiamen Baodetec Rubber Co ltd
Priority date: 2023-10-17
Filing date: 2023-10-17
Publication date: 2024-06-18
Anticipated expiration: 2033-10-17

Abstract

The utility model relates to the technical field of rubber rings, in particular to a rubber ring blanking die which comprises a die frame, wherein anti-displacement mechanisms are arranged on the surfaces of two sides of an upper die, supporting and replacing mechanisms are arranged on the surfaces of the die frame and a lower die frame, and a convenient conveying mechanism is arranged on the surface of a supporting frame. According to the utility model, raw materials can be blocked when the blanking die is used, the raw materials are prevented from being displaced between the upper die and the lower die frame, and meanwhile, the upper die can be guided when lifted, so that rubber rings with different sizes and diameters can be produced according to requirements when the blanking die is used, the use range of the blanking die is greatly enlarged, the use requirements of users can be met, the blanking die is more practical and convenient when in use, the manpower resources are saved, and the follow-up operation of the rubber rings is convenient.

Description

Rubber ring blanking die

Technical Field

The utility model relates to the technical field of rubber rings, in particular to a rubber ring blanking die.

Background

In the industry of manufacturing silica gel products, rubber rings are often used, the rubber rings are required to be cut one by one for use, the rubber rings are inconvenient to use, the efficiency is low, human resources are wasted, the existing rubber rings have defects in production and manufacturing, and a rubber ring blanking die is needed to solve the problems.

Firstly, when the blanking die is used, the raw materials are extruded and are easy to displace, and the existing blanking die cannot prevent the raw materials from displacing when in use, so that the raw materials cannot be blocked when the blanking die is used, and the raw materials are easy to displace between the upper die and the lower die frame; secondly, when the blanking die is used, the blanking die frames with different diameters are required to be replaced according to the requirements of manufacturing sizes, the existing blanking die cannot usually replace the blanking die frames with different diameters, and only a rubber ring with one diameter can be manufactured, so that the use range of the blanking die is greatly reduced when the blanking die is used, and the use requirements of users cannot be met; and thirdly, the blanking die is required to convey the rubber ring when in use, and the conventional blanking die usually needs to convey the rubber ring manually by a user, so that the blanking die is not practical and convenient enough when in use, human resources are wasted, and the follow-up operation of the rubber ring is inconvenient.

Disclosure of utility model

The utility model aims to provide a rubber ring blanking die, which solves the problems that in the prior art, raw material displacement cannot be prevented when the blanking die is used, lower die frames with different diameters cannot be replaced, rubber rings with one diameter can be manufactured, and manual conveying of the rubber rings is needed.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a rubber circle unloading mould, includes the mould frame, the surface mounting of mould frame top position department has the roof-rack body, the support frame is installed to the bottom of mould frame, the inner wall of mould frame is provided with the mould, go up the mutual sliding fit of mould and the inner wall of mould frame, the surface mounting of mould frame has control button, the inside of mould frame is provided with down the die carrier, equidistant through-hole body has all been seted up on the surface of die carrier down, the surface of going up the mould both sides all is provided with anti-displacement mechanism, anti-displacement mechanism's inside includes guide block, guide way and anti-displacement portion, the mould frame all is provided with the support and changes the mechanism with the surface of die carrier down, the inside of support and change the mechanism includes second electric putter, fastening double-screw bolt and supports and change the group, the surface of support frame is provided with convenient conveying mechanism, convenient conveying mechanism's inside includes down silo, rotating electrical machines, conveyer belt and commentaries on classics roller body.

Preferably, the surface of roof-rack body all installs first electric putter, first electric putter's input and control button's output electric connection, first electric putter's output runs through the roof-rack body and is fixed mutually with the surface of last mould top position department, the first drift is all installed through the screw to the surface of last mould bottom position department, the second drift is installed to the inner wall of first drift.

Preferably, the anti-displacement part is arranged on the surface of the upper die and consists of a mounting frame plate, fastening bolts and a striker plate, wherein the mounting frame plates are arranged on two sides of the upper die, the striker plate is arranged on the surface of the mounting frame plate, and the surface of the striker plate is in contact with the surface of the upper die.

Preferably, the surface threaded connection of striker plate top position department has fastening bolt, fastening bolt's one end runs through the striker plate and with the surface threaded fastening of last mould, the surface mounting of mounting plate has the guide block, the guide slot has all been seted up to the inner wall of mould frame, the guide slot is mutually sliding fit with the surface of guide block.

Preferably, the support replacement group is arranged on the surfaces of the die frame and the lower die frame, the support replacement group is composed of a fixing plate, a connecting plate and a stabilizing component, the second electric push rod is installed on the inner wall of the die frame, the input end of the second electric push rod is electrically connected with the output end of the control button, the fixing plate is installed at the output end of the second electric push rod, the connecting plate is installed on the surface of the top of the fixing plate, and the fixing plate and the connecting plate are respectively attached to the surface of the lower die frame.

Preferably, the inside of connecting plate all installs firm subassembly, firm subassembly's surface is laminated with the surface of lower die carrier bottom position department mutually, the surface threaded connection of fixed plate has the fastening double-screw bolt, the one end of fastening double-screw bolt runs through fixed plate and connecting plate in proper order and with the surface threaded fastening of lower die carrier.

Preferably, the surface of support frame both sides all is provided with the roller body, the roller body rotates the cooperation with the surface of support frame each other respectively, the surface mounting of roller body has the rotation motor, the input and the output electric connection of control button of rotation motor.

Preferably, the output end of the rotating motor is provided with a rotating shaft, one end of the rotating shaft is fixed with the surface of the rotating roller body, the surface of the rotating roller body is provided with a conveying belt, and the surface of the top position of the supporting frame is provided with a baffle used for blocking the rubber ring.

Compared with the prior art, the utility model has the beneficial effects that: according to the rubber ring blanking die, raw materials can be blocked when the blanking die is used, the raw materials are prevented from being displaced between the upper die and the lower die frame, meanwhile, the upper die can be guided when lifted, rubber rings with different sizes and diameters can be produced according to requirements when the blanking die is used, the use range of the blanking die is greatly enlarged, the use requirements of users can be met, the blanking die is more practical and convenient when in use, manpower resources are saved, and the follow-up operation of the rubber rings is convenient;

1. Through being provided with the displacement prevention mechanism, the user places the mounting frame plate on the surface of last mould both sides respectively for the mounting frame plate drives the striker plate and moves to contact with the surface of last mould, and the mounting frame plate drives the guide block and slides in the inside of guide way, guides mounting frame plate and striker plate under the combined action of guide block and guide way, avoids going up the mould and appears the skew in the lift process, at this moment, can block the raw materials under the combined action of mounting frame plate and striker plate, has realized the function that the unloading mould prevented the raw materials displacement, thereby can block the raw materials when making the unloading mould use, avoids the raw materials to displace between last mould and lower die carrier, simultaneously, can guide when going up the mould and going up the lift;

2. Through being provided with the support replacement mechanism, the user can change the lower die carrier of different apertures according to the needs of rubber circle size, at this moment, the user unscrews the fastening stud on fixed plate surface, and then pulls the fixed plate for the fixed plate drives the connecting plate and moves downwards, at this moment, the connecting plate drives firm subassembly and keeps away from the surface of lower die carrier, the user upwards pulls lower die carrier again, thereby take down lower die carrier from the inside of die carrier, change lower die carrier, support fixed plate and connecting plate under the effect of second electric putter, realize the function of lower die carrier of unloading mould convenient change different diameters, thereby can produce the rubber circle of different sizes and diameters according to needs when making the unloading mould use, the application range when making the unloading mould use enlarges greatly and more can satisfy user's user demand;

3. Through being provided with convenient conveying mechanism, control rotates motor work, drive the pivot rotation under the effect of rotating motor, when the pivot rotates, the pivot drives the roller body and rotates on the surface of support frame, drive the conveyer belt and rotate under the effect of roller body, thereby transport the rubber circle on conveyer belt surface, at this moment, block the rubber circle under the effect of baffle, avoid the rubber circle to appear rolling off, realize the function of unloading mould convenient transport rubber circle, thereby make the unloading mould more practical convenient when using, use manpower sparingly resource, the convenience is to the follow-up operation of rubber circle.

Drawings

FIG. 1 is a schematic three-dimensional perspective view of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 3 is an enlarged schematic view of the anti-displacement mechanism of FIG. 2 according to the present utility model;

FIG. 4 is an enlarged schematic view of the support change mechanism of FIG. 2 in accordance with the present utility model;

Fig. 5 is an enlarged schematic view of the convenient conveying mechanism of the present utility model.

In the figure: 1. a mold frame; 101. an upper die; 102. a top frame body; 103. a first electric push rod; 104. a support frame; 105. a control button; 106. a lower die frame; 107. a first punch; 108. a second punch; 2. an anti-displacement mechanism; 201. a guide block; 202. a guide groove; 203. an anti-displacement portion; 2031. mounting a frame plate; 2032. a fastening bolt; 2033. a striker plate; 3. a support replacement mechanism; 301. a second electric push rod; 302. a fastening stud; 303. supporting the replacement group; 3031. a fixing plate; 3032. a connecting plate; 3033. a stabilizing assembly; 4. the conveying mechanism is convenient; 401. discharging groove; 402. a rotating motor; 403. a conveyor belt; 404. a roller body.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and furthermore, the terms "first", "second", "third", "up, down, left, right", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present utility model, unless explicitly stated and defined otherwise, the terms "connected", "connected" and "connected" should be interpreted broadly, and for example, may be fixedly connected, detachably connected, or integrally connected; the mechanical connection and the electrical connection can be adopted; all other embodiments, which may be directly or indirectly through intermediaries, which may be obtained by a person of ordinary skill in the art without inventive effort based on the embodiments of the present utility model are within the scope of the present utility model.

The utility model provides a rubber ring blanking die, which is shown in fig. 1 and 2, and comprises a die frame 1, wherein a top frame body 102 is arranged on the surface of the top position of the die frame 1, a supporting frame 104 is arranged at the bottom of the die frame 1, an upper die 101 is arranged on the inner wall of the die frame 1, the upper die 101 is in sliding fit with the inner wall of the die frame 1, a control button 105 is arranged on the surface of the die frame 1, the control button 105 is of a LA series, a first electric push rod 103 is arranged on the surface of the top frame body 102, the first electric push rod 103 is of a DG series, the input end of the first electric push rod 103 is electrically connected with the output end of the control button 105, the output end of the first electric push rod 103 penetrates through the top frame body 102 and is fixed with the surface of the top position of the upper die 101, a first punch 107 is arranged on the surface of the bottom position of the upper die 101, a second punch 108 is arranged on the inner wall of the first punch 107, a lower die frame 106 is arranged in the surface of the die frame 1, and equidistant through-hole bodies are arranged on the surface of the lower die frame 106.

Further, as shown in fig. 2 and 3, the surfaces on both sides of the upper mold 101 are provided with anti-displacement mechanisms 2, the inside of each anti-displacement mechanism 2 comprises a guide block 201, a guide groove 202 and an anti-displacement portion 203, each anti-displacement portion 203 is arranged on the surface of the upper mold 101, each anti-displacement portion 203 is composed of a mounting frame plate 2031, a fastening bolt 2032 and a striker plate 2033, both sides of the upper mold 101 are provided with mounting frame plates 2031, the surfaces of the mounting frame plates 2031 are provided with the striker plates 2033, the surfaces of the striker plates 2033 are in contact with the surface of the upper mold 101, the surfaces of the top positions of the striker plates 2033 are in threaded connection with the fastening bolts 2032, one end of each fastening bolt 2032 penetrates through the striker plate 2033 and is in threaded connection with the surface of the upper mold 101, the surface of the mounting frame plates 2031 is provided with the guide block 201, the inner walls of the mold frames 1 are provided with guide grooves 202, and the guide grooves 202 are in sliding fit with the surfaces of the guide blocks 201.

In practice, a user places the mounting plates 2031 on the surfaces of two sides of the upper mold 101 respectively, so that the mounting plates 2031 drive the baffle plates 2033 to move to contact with the surface of the upper mold 101, then, the user tightens the fastening bolts 2032 on the surface of the baffle plates 2033, the baffle plates 2033 and the mounting plates 2031 are mounted on the surface of the upper mold 101 under the action of the fastening bolts 2032, then, when the upper mold 101 moves downwards, the upper mold 101 drives the mounting plates 2031 and the baffle plates 2033 to move downwards, at this time, the mounting plates 2031 drive the guide blocks 201 to slide in the guide grooves 202, the mounting plates 2031 and the baffle plates 2033 are guided under the combined action of the guide blocks 201 and the guide grooves 202, and the upper mold 101 is prevented from deflecting in the lifting process, and at this time, the raw materials can be blocked under the combined action of the mounting plates 2031 and the baffle plates 2033, so that the function of preventing raw material displacement of the lower mold is realized.

Further, as shown in fig. 2 and 4, the surfaces of the mold frame 1 and the lower mold frame 106 are both provided with a support replacement mechanism 3, the inside of the support replacement mechanism 3 includes a second electric push rod 301, a fastening stud 302 and a support replacement group 303, the support replacement group 303 is disposed on the surfaces of the mold frame 1 and the lower mold frame 106, the support replacement group 303 is composed of a fixing plate 3031, a connecting plate 3032 and a fixing component 3033, the inner wall of the mold frame 1 is provided with the second electric push rod 301, the model of the second electric push rod 301 is a DG series, the input end of the second electric push rod 301 is electrically connected with the output end of the control button 105, the output end of the second electric push rod 301 is provided with the fixing plate 3031, the surface of the top position of the fixing plate 3031 is provided with the connecting plate 3032, the fixing plate 3031 is respectively attached to the surfaces of the lower mold frame 106, the inside of the connecting plate 3032 is provided with the fixing component 3033, the surface of the fixing component 3033 is attached to the surface of the bottom position of the lower mold frame 106, one end of the fastening stud 302 is sequentially connected with the fastening stud 3031, and the fixing stud 3031 penetrates through the surface of the connecting plate 3032 and the lower mold frame 106.

During implementation, a user can replace the lower die carrier 106 with different apertures according to the requirement of the rubber ring size, at this time, the user unscrews the fastening studs 302 on the surface of the fixed plate 3031, and pulls the fixed plate 3031 again, so that the fixed plate 3031 drives the connecting plate 3032 to move downwards, at this time, the connecting plate 3032 drives the stabilizing component 3033 to be away from the surface of the lower die carrier 106, and the user pulls the lower die carrier 106 upwards again, so that the lower die carrier 106 is taken down from the die carrier 1, the lower die carrier 106 is replaced, and the fixed plate 3031 and the connecting plate 3032 are supported under the action of the second electric push rod 301, so that the function of conveniently replacing the lower die carrier 106 with different diameters by the blanking die is realized.

Further, as shown in fig. 2 and 5, the surface of the support frame 104 is provided with a convenient conveying mechanism 4, the interior of the convenient conveying mechanism 4 comprises a blanking groove 401, a rotating motor 402, a conveying belt 403 and a rotating roller body 404, the surfaces of two sides of the support frame 104 are provided with the rotating roller bodies 404, the rotating roller bodies 404 are respectively matched with the surfaces of the support frame 104 in a mutually rotating way, the rotating motor 402 is installed on the surface of the rotating roller bodies 404, the types of the rotating motor 402 can be JO series, the input end of the rotating motor 402 is electrically connected with the output end of the control button 105, a rotating shaft is installed at the output end of the rotating motor 402, one end of the rotating shaft is fixed with the surface of the rotating roller body 404, the surface of the rotating roller body 404 is provided with a conveying belt 403, and a baffle for blocking a rubber ring is installed on the surface of the top position of the support frame 104.

During implementation, the rubber ring falls to the surface of conveyer belt 403 through silo 401 down, at this moment, user's operation control button 105 again for control button 105 control rotation motor 402 work drives the pivot under rotation motor 402's effect and rotates, and when the pivot rotated, the pivot drove the roller body 404 and rotated at the surface of support frame 104, drove conveyer belt 403 under the effect of roller body 404 and rotated, thereby transport the rubber ring on conveyer belt 403 surface, at this moment, block the rubber ring under the effect of baffle, avoid the rubber ring to appear rolling down, in order to realize the function of unloading mould convenient conveying rubber ring.

Working principle: when the mold frame is used, the mold frame 1 is placed at a designated position, a user places raw materials of a rubber ring on the surface of the lower mold frame 106, and then the user operates the control button 105, so that the control button 105 controls the first electric push rod 103 on the surface of the top frame body 102 to work, and the upper mold 101 is driven to move up and down on the inner wall of the mold frame 1 under the action of the first electric push rod 103.

Then, the user places the mounting shelf plates 2031 on the surfaces of both sides of the upper mold 101 respectively, so that the mounting shelf plates 2031 drive the striker plates 2033 to move to contact with the surface of the upper mold 101, then, the user tightens the fastening bolts 2032 on the surface of the striker plates 2033, the striker plates 2033 and the mounting shelf plates 2031 are mounted on the surface of the upper mold 101 under the action of the fastening bolts 2032, then, when the upper mold 101 moves downwards, the upper mold 101 drives the mounting shelf plates 2031 and the striker plates 2033 to move downwards, at this time, the mounting shelf plates 2031 drive the guide blocks 201 to slide in the guide grooves 202, the mounting shelf plates 2031 and the striker plates 2033 are guided under the combined action of the guide blocks 201 and the guide grooves 202, the upper mold 101 is prevented from being deflected in the lifting process, at this time, the function of preventing raw materials from being displaced by the mounting shelf plates 2031 and the striker plates 2033 can be achieved under the combined action of the striker plates, so that the raw materials can be blocked when the lower mold is used, and at the same time, the upper mold 101 can be lifted and displaced when the upper mold 101 can be lifted.

Then, when the upper die 101 moves downward, the upper die 101 drives the first punch 107 and the second punch 108 to move downward, at this time, the rubber ring raw material on the surface of the lower die frame 106 is extruded under the combined action of the first punch 107 and the second punch 108, the inner ring of the rubber ring is molded under the action of the second punch 108, the outer ring of the rubber ring is molded under the action of the first punch 107, and then the rubber ring falls through the through hole body on the surface of the lower die frame 106.

Then, the user can change the lower die carrier 106 of different apertures according to the needs of rubber circle size, at this moment, the user unscrews the fastening stud 302 on fixed plate 3031 surface, and then pulls fixed plate 3031 for fixed plate 3031 drives connecting plate 3032 and moves downwards, at this moment, connecting plate 3032 drives stable subassembly 3033 and keeps away from the surface of lower die carrier 106, the user pulls down die carrier 106 again upwards, thereby take down lower die carrier 106 from the inside of die carrier 1, change lower die carrier 106, support fixed plate 3031 and connecting plate 3032 under the effect of second electric putter 301, in order to realize the convenient function of changing lower die carrier 106 of different diameters of unloading mould, thereby can produce the rubber circle of different sizes and diameters according to the needs when making the unloading mould use, the application range when making the unloading mould use enlarges more and more meeting user's user demand.

Subsequently, the rubber ring falls to the surface of the conveyer belt 403 through the blanking groove 401, at this moment, the user operates the control button 105 again, make the control button 105 control rotate the motor 402 work, drive the pivot rotation under the effect of rotating the motor 402, when the pivot rotates, the pivot drives the roller body 404 and rotates on the surface of support frame 104, drive the conveyer belt 403 rotation under the effect of roller body 404, thereby transport the rubber ring on conveyer belt 403 surface, at this moment, block the rubber ring under the effect of baffle, avoid the rubber ring to appear rolling, so as to realize the function that the blanking mould conveniently carries the rubber ring, thereby make the blanking mould more practical convenient when using, save human resources, the convenience is to the follow-up operation of rubber ring, finally accomplish the operation of blanking mould.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a rubber circle unloading mould, includes mould frame (1), its characterized in that: the surface mounting of mould frame (1) top position department has roof-rack body (102), support frame (104) are installed to the bottom of mould frame (1), the inner wall of mould frame (1) is provided with mould (101), the inner wall of going up mould (101) and mould frame (1) sliding fit each other, the surface mounting of mould frame (1) has control button (105), the inside of mould frame (1) is provided with down die carrier (106), equidistant through-hole body has all been seted up on the surface of lower die carrier (106), the surface of going up mould (101) both sides all is provided with displacement prevention mechanism (2), displacement prevention mechanism (2) the inside package has guide block (201), guide way (202) and displacement prevention portion (203), the surface of mould frame (1) and lower die carrier (106) all is provided with supports change mechanism (3), the inside package of supporting change mechanism (3) has second electronic push rod (301), fastening double-screw bolt (302) and supports change group (303), the surface of support frame (104) is provided with displacement prevention mechanism (403), convenient transport roller (402) and transport groove (401) are contained in transport mechanism (4).

2. A rubber ring blanking die as defined in claim 1, wherein: the surface of roof-rack body (102) all installs first electric putter (103), the output electric connection of the input of first electric putter (103) and control button (105), the output of first electric putter (103) runs through roof-rack body (102) and is fixed mutually with the surface of last mould (101) top position department, first drift (107) are all installed through the screw to the surface of last mould (101) bottom position department, second drift (108) are installed to the inner wall of first drift (107).

3. A rubber ring blanking die as defined in claim 1, wherein: the anti-displacement part (203) is arranged on the surface of the upper die (101), the anti-displacement part (203) is composed of a mounting frame plate (2031), fastening bolts (2032) and a striker plate (2033), the mounting frame plate (2031) is arranged on two sides of the upper die (101), the striker plate (2033) is arranged on the surface of the mounting frame plate (2031), and the surface of the striker plate (2033) is in contact with the surface of the upper die (101).

4. A rubber ring blanking die according to claim 3, characterized in that: the surface threaded connection of striker plate (2033) top position department has fastening bolt (2032), the one end of fastening bolt (2032) runs through striker plate (2033) and with the surface threaded fastening of last mould (101), the surface mounting of mounting plate (2031) has guide block (201), guide slot (202) have all been seted up to the inner wall of mould frame (1), guide slot (202) and the mutual sliding fit of the surface of guide block (201).

5. A rubber ring blanking die as defined in claim 1, wherein: the support is changed group (303) and is set up the surface at mould frame (1) and lower die carrier (106), support and change group (303) and constitute by fixed plate (3031), connecting plate (3032) and firm subassembly (3033), second electric putter (301) are all installed to the inner wall of mould frame (1), the input of second electric putter (301) and the output electric connection of control button (105), fixed plate (3031) are installed to the output of second electric putter (301), surface mounting of fixed plate (3031) top position has connecting plate (3032), fixed plate (3031) and connecting plate (3032) laminate with the surface of lower die carrier (106) respectively.

6. The rubber ring blanking die of claim 5, wherein: the inside of connecting plate (3032) is all installed firm subassembly (3033), the surface of firm subassembly (3033) is laminated with the surface of lower die carrier (106) bottom position department mutually, the surface threaded connection of fixed plate (3031) has fastening double-screw bolt (302), the one end of fastening double-screw bolt (302) runs through fixed plate (3031) and connecting plate (3032) in proper order and with the surface threaded fastening of lower die carrier (106).

7. A rubber ring blanking die as defined in claim 1, wherein: the surface of support frame (104) both sides all is provided with roller body (404), roller body (404) are respectively with the mutual normal running fit of the surface of support frame (104), the surface mounting of roller body (404) has rotation motor (402), the input of rotation motor (402) and the output electric connection of control button (105).

8. The rubber ring blanking die of claim 7, wherein: the output end of the rotating motor (402) is provided with a rotating shaft, one end of the rotating shaft is fixed with the surface of the rotating roller body (404), the surface of the rotating roller body (404) is provided with a conveying belt (403), and the surface of the top position of the supporting frame (104) is provided with a baffle used for blocking the rubber ring.