CN210190275U

CN210190275U - O-shaped ring and forming die thereof

Info

Publication number: CN210190275U
Application number: CN201920764717.1U
Authority: CN
Inventors: Yuhang Li; 李裕杭
Original assignee: Nanjing Faldo Technology Co Ltd
Current assignee: Nanjing Faldo Technology Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-03-27
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses an O-shaped ring and a forming die thereof, which has the technical scheme that the O-shaped ring comprises an upper die and a lower die, wherein the opposite side walls of the upper die and the lower die are provided with holding tanks, and the opposite side walls of the upper die and the lower die are provided with an inner ring groove and an outer ring groove which are respectively positioned at the two sides of the holding tanks and are connected with the holding tanks; heating the upper die and the lower die, melting the rubber material, overflowing the rubber material from the containing groove into the inner ring groove and the outer ring groove to form flash, wherein the rubber material firstly passes through the joint and then overflows from the inner ring groove and the outer ring groove to form a thin wall and then forms flash as the two sides of the containing groove are respectively connected with the inner ring groove and the outer ring groove; after the O-shaped ring is formed, the upper die is opened, a worker takes out the O-shaped ring, the thin wall is torn by hand, the fins can be conveniently and quickly taken out, and the possibility of damaging the surface quality of the O-shaped ring can be reduced due to the fact that the thin wall is very short and thin.

Description

O-shaped ring and forming die thereof

Technical Field

The utility model relates to a sealing washer mould, more specifically say, it relates to an O type circle and forming die thereof.

Background

O-rings (O-rings) are rubber seals with a circular cross-section, and are called O-rings because they have an O-ring cross-section. The O-shaped ring is the most common sealing part, has strong pressure resistance and can bear pressure of dozens of megapascals. The O-shaped ring die is a manufacturing tool for manufacturing an O-shaped ring and fixing the shape of the O-shaped ring.

Chinese patent with publication number CN202053411U discloses an O-ring mold with a positioning structure, which comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are connected and positioned in a matching manner through a guide pillar and a guide sleeve, a mold groove is located at the inner side of the guide pillar and the guide sleeve, a circular positioning ring is arranged at the inner side of the mold groove of the upper mold and the lower mold, the positioning ring is embedded and installed on the connecting surface of the lower mold, the positioning ring is concentric with the mold groove and corresponds to the embedding position of the positioning ring, and an annular caulking groove connected with the positioning ring is arranged on the connecting surface of the upper mold. The positioning ring is firmly matched with the upper die and the lower die without allowing looseness to form an organic whole, and the whole is firmly matched with the fitting surface of the upper die and the fitting surface of the lower die; the positioning ring is tightly matched with the upper die and the lower die and stably positions the dies together with the guide pillar. The improved die directly adds the rubber material to the die through the positioning ring, so that the feeding is convenient and the rubber material is saved. In the feeding process, a feeder is not needed for feeding, and the complex procedure of manufacturing the feeder is omitted.

When the O-shaped ring mold in the prior art is used, a rubber material is placed in the positioning ring, the upper mold and the lower mold are closed, but in the actual production, in the rubber material processing process, the rubber material is easy to overflow from the positioning ring after melting to form a flash, the O-shaped ring is taken out after molding, workers tear off the flash, and the flash is directly connected with the O-shaped ring, so that the surface of the O-shaped ring is easy to be damaged when the flash is torn off, residues are easy to be generated, the surface quality of the O-shaped ring is reduced, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an O type circle and forming die thereof.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a O type circle and forming die thereof, includes mould and bed die, all be equipped with the holding tank that supplies the sizing material to put into on the relative lateral wall of mould and bed die, all be equipped with the inner ring groove and the outer annular groove that supply the overlap to spill over on the relative both sides wall of mould and bed die, inner ring groove and outer annular groove are located the both sides of holding tank respectively and all meet the setting with the holding tank.

By adopting the technical scheme, when the O-shaped ring is produced, the sizing material is placed in the containing groove of the lower die, the lower die is covered on the upper die, the upper die and the lower die are heated, the sizing material is melted, and after the containing groove is filled with the sizing material, the sizing material overflows from the containing groove into the inner ring groove and the outer ring groove to form flash; after the O-shaped ring is formed, the upper die is opened, a worker takes out the O-shaped ring, the thin wall is torn by hand, the fins can be conveniently and quickly taken out, and the possibility of damaging the surface quality of the O-shaped ring can be reduced due to the fact that the thin wall is very short and thin.

Further, the groove depth of the inner ring groove and the groove depth of the outer ring groove are both smaller than the groove depth of the accommodating groove.

Through adopting above-mentioned technical scheme, utilize the difference of the groove depth of inner ring groove, outer ring groove and holding tank, be favorable to controlling the thickness of overlap, it is great to reduce overlap thickness, the inconvenient possibility of tearing the overlap.

Furthermore, a positioning column is arranged on one side of the upper die close to the lower die and in the center of the upper die, and a positioning hole for the positioning column to insert into is formed in the side wall of the lower die.

Through adopting above-mentioned technical scheme, when production O type circle, when closing last mould on the bed die, utilize the reference column to insert in the locating hole, be favorable to reducing the possibility that the holding tank on mould and the bed die produced the deviation to reduce the possibility that O type circle produced the deformation.

Further, the diameter of the positioning column decreases progressively from the side close to the upper die to the side far away from the lower die.

Through adopting above-mentioned technical scheme, utilize the reference column diameter poor, make things convenient for the workman to insert the reference column in the locating hole.

Furthermore, a placing groove is formed in the side wall of the lower die;

the cutting assembly is arranged in the placement groove in a sliding mode and used for cutting off the flash.

Through adopting above-mentioned technical scheme, after O type circle shaping, take out the back with O type circle, because the temperature of O type circle is higher, when the staff hand tears the overlap, scald the workman easily, so take out cutting assembly from the mounting groove, utilize cutting assembly excision overlap to this can convenient and fast get rid of the overlap, also can reduce and scald the workman.

Further, cutting assembly includes the articulated excision board of being connected of mounting panel and mounting panel lateral wall, all be equipped with the annular that holds O type circle on the relative both sides wall of mounting panel and excision board, the excision board is close to one side of annular and is equipped with interior cutting ring and outer loop sword, interior cutting ring and outer loop sword are located the edge of the interior outer lane of annular respectively.

Through adopting above-mentioned technical scheme, the workman places O type circle in the annular of mounting panel, rotates the excision board, utilizes interior cutting ring and outer loop sword to cut off the overlap of O type circle to this can convenient and fast get rid of the overlap, also can reduce the possibility of damaging O type circle surface quality.

Further, be equipped with the through-hole on the lateral wall of mounting panel, through-hole and annular intercommunication, be equipped with the spring on the lateral wall of through-hole, the one end that the through-hole lateral wall was kept away from to the spring is equipped with the extension bar, the extension bar sets up along the thickness direction of mounting panel.

Through adopting above-mentioned technical scheme, when the excision overlap, the excision board impresses O type circle in the annular, and the workman upwards presses the extension bar, stretches out O type circle from the annular in, makes things convenient for the workman to take off O type circle.

Furthermore, a handle is arranged on the side wall of the mounting plate.

Through adopting above-mentioned technical scheme, utilize the handle, make things convenient for the workman to take out the mounting panel from the mounting groove.

To sum up, the utility model discloses following beneficial effect has:

1. when the O-shaped ring is manufactured, the rubber material is melted in the holding tank and then overflows into the outer ring groove and the inner ring groove, the outer ring groove and the inner ring groove are connected with the holding tank, the rubber material firstly passes through the connecting parts of the outer ring groove and the holding tank, the inner ring groove and the holding tank to form thin walls, then enters the inner ring groove and the outer ring groove, the O-shaped ring is taken out, and then the thin walls are utilized, so that a worker can conveniently tear off the flash, and the possibility of damaging the surface quality of the O-shaped ring when the flash is torn off is favorably reduced due to the thinner thin walls;

2. the positioning columns are inserted into the positioning grooves, so that the possibility that the accommodating grooves in the upper die and the lower die are inclined is reduced;

3. the inner ring cutter and the outer ring cutter are used for cutting off the flash, so that the possibility that the quality of the surface of the O-shaped ring is damaged due to the fact that the flash is torn by a hand is reduced, and scalding of workers can be reduced.

Drawings

Fig. 1 is a schematic structural view showing embodiment 1.

Fig. 2 is a sectional view showing the accommodation groove, the inner ring groove, and the outer ring groove in embodiment 1.

Fig. 3 is a schematic structural diagram embodying embodiment 2.

Fig. 4 is a sectional view showing a-a in fig. 3.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Fig. 6 is a partial schematic view showing a cross-sectional view B-B in fig. 3.

In the figure: 1. an upper die; 10. accommodating grooves; 11. an inner ring groove; 12. an outer ring groove; 13. a positioning column; 14. positioning holes; 2. a lower die; 20. a placing groove; 3. a cutting assembly; 30. mounting a plate; 31. cutting off the plate; 32. a ring groove; 33. an inner cutting ring; 34. an outer cutting ring; 35. a through hole; 36. a spring; 37. an extension bar; 38. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

referring to fig. 1 and 2, an O-ring and a forming mold thereof include an upper mold 1 and a lower mold 2, wherein the upper mold 1 and the lower mold 2 are both disc-shaped, accommodating grooves 10 for accommodating a sizing material are formed on opposite side walls of the upper mold 1 and the lower mold 2, inner annular grooves 11 and outer annular grooves 12 for flash to overflow are formed on two opposite side walls of the upper mold 1 and the lower mold 2, and the inner annular grooves 11 and the outer annular grooves 12 are respectively located on two sides of the accommodating grooves 10 and are connected with the accommodating grooves 10; the groove depths of the inner ring groove 11 and the outer ring groove 12 are both smaller than the groove depth of the accommodating groove 10, and the longitudinal sections of the inner ring groove 11 and the outer ring groove 12 are V-shaped.

Referring to fig. 2, a positioning column 13 is arranged at the center of the upper die 1 close to one side of the lower die 2, and a positioning hole 14 for inserting the positioning column 13 is arranged on the side wall of the lower die 2; the diameter of the positioning column 13 is gradually reduced from one side close to the upper die 1 to one side far away from the lower die 2, so that the positioning column 13 can be conveniently inserted into the positioning hole 14; the positioning columns 13 are inserted into the positioning holes 14, so that the deviation of the accommodating grooves 10 of the upper die 1 and the lower die 2 is reduced, and the possibility of producing inferior O-shaped rings is reduced.

The implementation principle of the above embodiment is as follows: when the O-shaped ring is processed, rubber is placed into the containing groove 10 of the lower die 2, the upper die 1 covers the upper die 2 and the lower die 2, the rubber is heated and melted, thin walls are formed at the joints between the inner ring groove 11 and the containing groove 10 and between the outer ring groove 12 and the containing groove 10, and then the rubber overflows into the inner ring groove 11 and the outer ring groove 12 to form flash;

after the O-shaped ring is formed, the O-shaped ring is taken out, the groove depth of the inner ring groove 11 and the groove depth of the outer ring groove 12 are smaller than that of the accommodating groove 10, the thickness of the flash is controlled, workers can tear the flash, the flash is conveniently and quickly torn off along the thin wall, and the possibility that the surface quality of the O-shaped ring is damaged when the flash is torn off is reduced.

Example 2:

an O-ring and a forming mold thereof, referring to fig. 3, based on embodiment 1, the present embodiment is different from embodiment 1 in that: because the temperature of the O-shaped ring is higher when the flash is torn off, the worker is easy to scald when tearing off the flash; a seating groove 20 is provided on the sidewall of the lower mold 2.

Referring to fig. 4 and 5, the cutting assembly 3 for cutting off flash is slidably arranged in the mounting groove 20; the cutting assembly 3 comprises a cutting plate 31, a mounting plate 30 and a mounting plate 30 are hinged to each other, two opposite side walls of the mounting plate 30 and the cutting plate 31 are respectively provided with a ring groove 32 for accommodating an O-shaped ring, one side, close to the ring groove 32, of the cutting plate 31 is provided with an inner ring cutter 33 and an outer ring cutter 34, the longitudinal sections of the inner ring cutter 33 and the outer ring cutter 34 are respectively in a right-angled triangle shape, the right-angled edges of the inner ring cutter 33 and the outer ring cutter 34 are flush with the groove opening of the ring groove 32, and the inner ring cutter 33 and the outer ring cutter 34 are respectively positioned at the edge; handles 38 are provided on the side walls of the mounting plate 30.

Referring to fig. 6, a through hole 35 is formed in the side wall of the mounting plate 30, the through hole 35 is communicated with the annular groove 32, a spring 36 is arranged on the side wall of the through hole 35, an extension rod 37 is arranged at one end of the spring 36, which is far away from the side wall of the through hole 35, the extension rod 37 is arranged along the thickness direction of the mounting plate 30, one end of the extension rod 37 is located in the through hole 35, and the other end of the extension rod.

The implementation principle of the above embodiment is as follows: the difference from the embodiment 1 is that when a worker takes out the O-shaped ring, the mounting plate 30 and the cutting plate 31 are taken out from the mounting groove, the cutting plate 31 is rotated, the O-shaped ring is placed in the ring groove 32, then the cutting plate 31 is closed, and the inner ring cutter 33 and the outer ring cutter 34 are positioned at the edge of the ring groove 32, so that the fins can be conveniently and quickly removed, and the scalding of the worker can be reduced; because the O-shaped ring is pressed into the ring groove 32 when the cutting plate 31 is closed, a worker presses the extension rod 37 into the ring groove 32 to protrude the O-shaped ring from the ring groove 32, so that the O-shaped ring can be conveniently and quickly taken out.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides an O type circle and forming die thereof, includes mould (1) and bed die (2), its characterized in that: the glue filling machine is characterized in that accommodating grooves (10) for accommodating glue are formed in opposite side walls of the upper die (1) and the lower die (2), inner grooves (11) and outer grooves (12) for overflowing of flash are formed in opposite side walls of the upper die (1) and the lower die (2), the inner grooves (11) and the outer grooves (12) are located on two sides of the accommodating grooves (10) respectively and are connected with the accommodating grooves (10).

2. The O-ring and the molding die thereof according to claim 1, wherein: the groove depths of the inner ring groove (11) and the outer ring groove (12) are smaller than the groove depth of the accommodating groove (10).

3. The O-ring and the molding die thereof according to claim 1, wherein: the positioning device is characterized in that a positioning column (13) is arranged on one side, close to the lower die (2), of the upper die (1) and located in the center of the upper die, and a positioning hole (14) for the positioning column (13) to insert is formed in the side wall of the lower die (2).

4. The O-ring and the molding die thereof according to claim 3, wherein: the diameter of the positioning column (13) is gradually reduced from one side close to the upper die (1) to one side far away from the lower die (2).

5. The O-ring and the molding die thereof according to claim 1, wherein: a placing groove (20) is formed in the side wall of the lower die (2);

the cutting assembly (3) is arranged in the placement groove (20) in a sliding mode and used for cutting off flash.

6. The O-ring and the molding die thereof according to claim 5, wherein: cutting assembly (3) include cutting plate (31) that mounting panel (30) and mounting panel (30) lateral wall are articulated to be connected, all be equipped with annular (32) that hold O type circle on the relative both sides wall of mounting panel (30) and cutting plate (31), one side that cutting plate (31) are close to annular (32) is equipped with interior cutting ring (33) and outer cutting ring (34), interior cutting ring (33) and outer cutting ring (34) are located the edge of annular (32) inner and outer cutting ring respectively.

7. The O-ring and the molding die thereof according to claim 6, wherein: be equipped with through-hole (35) on the lateral wall of mounting panel (30), through-hole (35) and annular (32) intercommunication, be equipped with spring (36) on the lateral wall of through-hole (35), the one end that through-hole (35) lateral wall was kept away from in spring (36) is equipped with extension bar (37), the thickness direction setting of mounting panel (30) is followed in extension bar (37).

8. The O-ring and the molding die thereof according to claim 6, wherein: and a handle (38) is arranged on the side wall of the mounting plate (30).