CN113232260B

CN113232260B - Pre-forming extrusion device for preparing rubber sealing element

Info

Publication number: CN113232260B
Application number: CN202110608021.1A
Authority: CN
Inventors: 赵恒全; 方长兴
Original assignee: Xingtai Janne Vicose Industry Co ltd
Current assignee: Xingtai Janne Vicose Industry Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-06-17
Anticipated expiration: 2041-06-01
Also published as: CN113232260A

Abstract

The invention relates to the technical field of molding extrusion equipment, and provides a pre-molding extrusion device for preparing a rubber sealing element, which comprises an extruder for extruding tubular preformed rubber, a rotary table arranged on one side of the extrusion end of the extruder, annular grooves arranged on the peripheral surface of the rotary table, a plurality of molding dies uniformly distributed in the annular grooves in an annular shape, and an oscillation channel arranged in the annular grooves, wherein the molding dies receive the discharge of the extruder after rotating along with the rotary table, and penetrate through the oscillation channel and collide with the inner wall of the oscillation channel after rotating. Through above-mentioned technical scheme, the problem that air gets into the mould among the prior art and influences the product quality has been solved.

Description

Pre-forming extrusion device for preparing rubber sealing element

Technical Field

The invention relates to the technical field of molding extrusion equipment, in particular to a pre-molding extrusion device for preparing a rubber sealing element.

Background

The rubber sealing element is annular, and the preparation process of the rubber sealing element needs an extruder to melt and extrude raw materials, then the raw materials are cut off and enter a die to be extruded and formed, and the raw materials are cooled and discharged from the die after being formed. However, after the existing rubber sealing element is extruded, air enters the die due to poor sealing, so that air bubbles exist in a finished product, and the quality of the product is influenced.

Disclosure of Invention

The invention provides a pre-forming extrusion device for preparing a rubber sealing element, which solves the problem that the product quality is influenced when air enters a mould in the related technology.

The technical scheme of the invention is as follows:

an extruder for extruding a tubular pre-formed rubber,

a rotary disc arranged at one side of the extrusion end of the extruder, wherein the circumferential surface of the rotary disc is provided with an annular groove,

a plurality of forming dies which are uniformly distributed in the annular groove in an annular shape, the forming dies receive the discharge of the extruder after rotating along with the turntable,

and the oscillating channel is arranged in the annular groove, and the forming die penetrates through the oscillating channel after rotating and collides with the inner wall of the oscillating channel.

The molding die comprises

A connecting rod arranged along the radial direction of the turntable,

an upper die and a lower die, wherein the lower die is arranged on the connecting rod, the upper die is rotatably arranged on the lower die,

the lower die is provided with a concave part, the upper die is provided with a convex part matched with the concave part,

the upper die and the lower die are spherical after being assembled, and forming cavities are formed in the upper die and the lower die.

Also comprises

The first excitation module is arranged on the convex part,

and the second excitation module is arranged on the concave part.

Also comprises

A strip-shaped groove arranged on the rotary table and arranged along the axial direction of the rotary table, one end of the connecting rod is hinged in the strip-shaped groove,

and the two second springs are arranged in the strip-shaped groove and are respectively positioned at two sides of the connecting rod and used for providing the restoring force of the connecting rod in the middle.

And also comprises

A snake-shaped hole penetrates through the oscillating channel, the snake-shaped hole is bent along the axial direction of the rotary table, the length of the center of the cross section of any position of the snake-shaped hole from the center of the rotary table is equal, the mold penetrates through the snake-shaped hole after rotating,

the oscillation channel orientation one side of carousel is provided with the groove of stepping down, supplies the connecting rod passes, step down the groove with snakelike hole intercommunication.

Also comprises

The pushing mechanism is arranged on one side of the turntable close to the extruder,

and after the connecting rod rotates to the outlet of the extruder, the connecting rod moves outwards along the radial direction of the turntable and receives and discharges materials.

The pushing mechanism comprises

A support plate fixed in the turntable,

a fixing block arranged on the outward side of the supporting plate,

the excitation module III and the excitation module IV are respectively arranged at two sides of the fixed block,

the rotating plate is hinged on the fixed block and is respectively contacted with the excitation module III or the excitation module IV after rotating,

and the pushing piece is arranged in the turntable in a swinging manner and used for pushing the connecting rod.

The pushing piece comprises

The end part of the hinge rod far away from the hinge shaft is movably arranged on the rotating plate,

the push rod is arranged on the hinge rod and pushes the connecting rod along with the hinge rod after rotating.

One end of the connecting rod, which is far away from the forming die, is provided with a passive push block, and the diameter of the passive push block is larger than that of the connecting rod.

The working principle and the beneficial effects of the invention are as follows:

1. in the invention, after the tubular rubber is extruded by the extruder, the tubular rubber is cut into small sections with fixed length by a cutting device, the small sections enter a forming die, a die arranged according to the shape of a product is arranged on the forming die, and when the small sections enter the forming die, the small sections can be extruded and gradually cooled and formed. After the material of segment has been put into in forming die, along with the carousel rotates, forming die gets into the oscillation channel in, the inside passageway that is not the circumference and sets up that has of oscillation channel, forming die is passive produces the collision with the inner wall of oscillation channel, and at the collision in-process, along with the air bubble that the rubber and plastic got into forming die together is broken by the shake to reduce or avoided the bubble volume in the finished product, improved product quality. The forming die annular is provided with a plurality of, rotates along with the carousel, and the motion order does, to a forming die, receives the ejection of compact of extruder earlier, then gets into the vibration passageway and shakes garrulous bubble, then outside cooling and the forming die of discharging, and this scheme sets up a plurality of forming die, can greatly improve work efficiency.

Drawings

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

FIG. 1 is a schematic view of a disk structure of the present invention;

FIG. 2 is a schematic perspective view of a disk according to the present invention;

FIG. 3 is a schematic view of the overall structure of the present invention;

FIG. 4 is a schematic side view of a disk according to the present invention;

FIG. 5 is a schematic view of the lower mold structure of the present invention;

FIG. 6 is a schematic view of the upper mold structure of the present invention;

FIG. 7 is a schematic top view of the lower mold of the present invention;

FIG. 8 is a schematic top view of the upper mold of the present invention;

FIG. 9 is a schematic view of the structure of the oscillation channel of the present invention;

FIG. 10 is a structural diagram of the pushing mechanism of the present invention in an inoperative state;

FIG. 11 is a structural diagram illustrating an operation state of the pushing mechanism according to the present invention;

FIG. 12 is a schematic view of the non-operative configuration of the pushing mechanism of the present invention;

FIG. 13 is a structural diagram illustrating an operation state of the pushing mechanism according to the present invention;

in the figure: 1-extruder, 2-rotary table, 3-annular groove, 4-forming die, 5-oscillation channel, 6-connecting rod, 7-upper die, 8-lower die, 9-concave part, 10-convex part, 11-excitation module I, 12-excitation module II, 13-snake-shaped hole, 14-abdicating groove, 15-strip-shaped groove, 16-second spring, 17-pushing mechanism, 18-supporting plate, 19-fixing block, 20-excitation module III, 21-excitation module IV, 22-rotating plate, 23-pushing piece, 24-hinged rod, 25-passive pushing block and 26-pushing rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.

As shown in fig. 1 to 13, the present embodiment proposes a preforming extrusion apparatus for rubber seal preparation, comprising an extruder 1 for extruding a tubular preformed rubber,

a rotary table 2 arranged at one side of the extrusion end of the extruder 1, a ring-shaped groove 3 is arranged on the circumferential surface of the rotary table 2,

a plurality of forming dies 4 are uniformly distributed in the annular groove 3 in an annular shape, the forming dies 4 receive the discharge of the extruder 1 after rotating along with the turntable 2,

and the oscillating channel 5 is arranged in the annular groove 3, and the forming die 4 passes through the oscillating channel 5 after rotating and collides with the inner wall of the oscillating channel 5.

In this embodiment, after the tubular rubber is extruded by the extruder 1, the tubular rubber is cut into small segments with fixed length by a cutting device, the small segments enter the forming die 4, the forming die 4 is provided with a die arranged according to the shape of the product, and when the small segments enter the forming die 4, the small segments can be extruded and gradually cooled for forming. After putting into the material of segment in forming die 4, along with carousel 2 rotates, forming die 4 gets into oscillation channel 5 in, oscillation channel 5 is inside to have the passageway that is not the circumference and sets up, and forming die 4 is passive to produce the collision with oscillation channel 5's inner wall, and at the collision in-process, along with the rubber and plastic gets into the air bubble in forming die 4 together and is shattered by the vibrations to reduce or avoided the bubble volume in the finished product, improved product quality. 4 annular of forming die is provided with a plurality of, rotates along with carousel 2 together, and the motion order does, to a forming die 4, receives the ejection of compact of extruder 1 earlier, then gets into oscillation channel 5 and shakes garrulous bubble, then outside cooling and the forming die 4 of discharging, and this scheme sets up a plurality of forming die 4, can greatly improve work efficiency.

Further, the molding die 4 includes

A connecting rod 6 arranged along the radial direction of the turntable 2,

an upper die 7 and a lower die 8, wherein the lower die 8 is arranged on the connecting rod 6, the upper die 7 is rotationally arranged on the lower die 8,

the lower die 8 is provided with a recess 9, the upper die 7 is provided with a protrusion 10 cooperating with the recess 9,

the upper die 7 and the lower die 8 are spherical after being matched, and forming cavities are arranged in the upper die 7 and the lower die 8.

In this embodiment, the tie bar 6 has one end connected to the turntable 2 and the other end connected to the lower mold 8, and the upper mold 7 is rotated and then clamped to the lower mold 8 to form a spherical shape, so that the concave portion 9 can rotate along the shape of the convex portion 10 without restriction.

Further, also comprises

An excitation module I11 is arranged on the convex part 10,

and a second excitation module 12 disposed on the recess 9.

In this embodiment, the first excitation modules 11 are disposed at both ends of the convex portion 10, the second excitation modules 12 are disposed at both ends of the concave portion 9, when the forming die 4 rotates to be close to the extruder 1, the first excitation modules 11 and the second excitation modules 12 are energized, so that the upper die 7 and the lower die 8 which are in the die-clamping state originally are opened, and the upper die 7 rotates to expose the forming cavity to receive the discharge of the extruder 1. For example, when the mold is to be opened, the first excitation modules 11 at the two ends of the lower mold 8 are respectively positive and negative in magnetism, and the second excitation modules 12 corresponding to the upper mold 7 closed with the lower mold are also respectively positive and negative in magnetism, so that the upper mold 7 rotates due to the repulsive force and stops rotating at the opposite magnetic end contacting the lower mold 8, and the molding cavity is exposed.

Further, also comprises

A strip-shaped groove 15 arranged on the turntable 2, the strip-shaped groove 15 is arranged along the axial direction of the turntable 2, one end of the connecting rod 6 is hinged in the strip-shaped groove 15,

the second springs 16, two in total, are arranged in the strip-shaped groove 15, and the two second springs 16 are respectively located at two sides of the connecting rod 6 and used for providing a restoring force for centering the connecting rod 6.

In this embodiment, the connecting rod 6 passes through the strip-shaped groove 15, and the second springs 16 located at two sides of the connecting rod 6 are arranged in the strip-shaped groove 15, and the second springs 16 can provide restoring force for the connecting rod 6 to be located in the middle, and can also prevent the damage caused by hard connection when the connecting rod 6 drives the forming die 4 to enter the oscillation channel 5, and can swing left and right along with the extension of the snake-shaped hole 13.

Further, also comprises

A snake-shaped hole 13 penetrates through the oscillating channel 5, the snake-shaped hole 13 is bent along the axial direction of the rotary table 2, the length of the cross section center of any position of the snake-shaped hole 13 from the center of the rotary table 2 is equal, the mold passes through the snake-shaped hole 13 after rotating,

and one side of the oscillation channel 5 facing the rotary disc 2 is provided with a yielding groove 14 for the connecting rod 6 to pass through, and the yielding groove 14 is communicated with the snake-shaped hole 13.

In this embodiment, the longitudinal section of the serpentine hole 13 is circular, and the diameter of the serpentine hole 13 is slightly larger than the outer diameter of the forming mold 4, and the serpentine hole 13 is disposed in a bending manner in the axial direction of the rotary table 2, that is, after the forming mold 4 enters the serpentine hole 13, the serpentine hole only swings along the axial direction of the rotary table 2, and no radial movement is generated. The forming die 4 vibrates and shatters bubbles by colliding the inner wall of the snake-shaped hole 13 in the rotating process. The abdicating groove 14 is positioned at one end of the snake-shaped hole 13 facing to the circle center of the rotary table 2 and is used for accommodating a rotating rod connected with the forming die 4 to pass through.

Further, also comprises

A pushing mechanism 17 arranged at one side of the turntable 2 close to the extruder 1,

the connecting rod 6 moves outwards along the radial direction of the turntable 2 after rotating to the outlet of the extruder 1 and receives the discharged material.

In this embodiment, the pushing mechanism 17 is used to make the forming mold 4 far away from the center of the rotary table 2, and the extrusion opening of the extruder 1 is arranged outside the rotation track of the forming mold 4, that is, the forming mold 4 needs to move outwards for a certain distance to receive the discharged material of the extruder 1. This is also provided to avoid the extrusion opening of the extruder 1 from blocking the movement of the shaping die 4.

Further, the pushing mechanism 17 includes

A support plate 18, fixed inside the turntable 2,

a fixing block 19 provided on an outward side of the support plate 18,

the excitation module III 20 and the excitation module IV 21 are respectively arranged at two sides of the fixed block 19,

the rotating plate 22 is hinged on the fixed block 19, the rotating plate 22 is respectively contacted with the excitation module III 20 or the excitation module IV 21 after rotating,

and the pushing piece 23 is arranged in the rotary table 2 in a swinging mode and used for pushing the connecting rod 6.

In this embodiment, the fixed block 19 on the support plate 18 is used to provide a support for the rotation of the rotating plate 22, the rotating plate 22 is made of an iron material, and the excitation module three 20 and the excitation module four 21 on the two sides of the fixed block 19 are used to drive the rotating plate 22 to be away from the excitation module three 20 and close to the excitation module four 21 or close to the excitation module three 20 and far from the excitation module four 21 after being electrified. The rotating plate 22 rotates to drive the pushing piece 23 to contact or be away from the push rod, so that the connecting rod 6 is pushed out or reset.

Further, the pusher 23 comprises

A hinge lever 24, an end of the hinge lever 24 remote from the hinge shaft being movably provided on the pivoting plate 22,

and a push rod 26 arranged on the hinge rod 24 and pushing the connecting rod 6 after rotating along with the hinge rod 24.

In this embodiment, the end of the hinge rod 24 is movably disposed on the rotating plate 22, the hinge rod 24 is hinged to the turntable 2, and the other end of the hinge rod 24 is provided with a push rod having a tip end for contacting the end of the connecting rod 6 after rotation.

Further, one end of the push rod, which is far away from the forming die 4, is provided with a passive push block 25, and the diameter of the passive push block 25 is larger than that of the connecting rod 6.

In this embodiment, the diameter of the passive pushing block 25 is larger than the connecting rod 6, and the passive pushing block 25 is connected with the connecting rod 6, so that the rotating disc 2 can be prevented from falling out when the forming die 4 rotates to the lowest point. The passive pushers 25 are able to move radially within the turntable 2.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A preforming extrusion device for preparing rubber sealing elements, characterized by comprising

An extruder (1) for extruding a tubular preformed rubber,

a rotary table (2) arranged at one side of the extrusion end of the extruder (1), an annular groove (3) is arranged on the side surface of the rotary table (2),

a plurality of forming dies (4) are uniformly distributed in the annular groove (3) in an annular shape, the forming dies (4) receive the discharged material of the extruder (1) after rotating along with the turntable (2),

an oscillation channel (5) arranged in the annular groove (3), wherein the forming die (4) passes through the oscillation channel (5) after rotating and collides with the inner wall of the oscillation channel (5),

a strip-shaped groove (15) arranged on the turntable (2), the strip-shaped groove (15) is axially arranged along the turntable (2), one end of the connecting rod (6) is hinged in the strip-shaped groove (15),

two second springs (16) are arranged in the strip-shaped groove (15), the two second springs (16) are respectively positioned at two sides of the connecting rod (6) and used for providing a central restoring force for the connecting rod (6),

the forming die (4) comprises the connecting rod (6), an upper die (7) and a lower die (8),

the connecting rods (6) are arranged along the radial direction of the turntable (2),

the lower die (8) is arranged on the connecting rod (6), the upper die (7) is rotationally arranged on the lower die (8),

the lower die (8) is provided with a concave part (9), the upper die (7) is provided with a convex part (10) matched with the concave part (9),

the upper die (7) and the lower die (8) are spherical after being assembled, forming cavities are arranged in the upper die (7) and the lower die (8),

a snake-shaped hole (13) penetrates through the oscillating channel (5), the snake-shaped hole (13) is bent along the axial direction of the rotary table (2), the length of the center of the cross section of any position of the snake-shaped hole (13) from the center of the rotary table (2) is equal, the mold penetrates through the snake-shaped hole (13) after rotating,

oscillation channel (5) orientation one side of carousel (2) is provided with groove of stepping down (14), supplies connecting rod (6) pass, step down groove (14) with snake shape hole (13) intercommunication.

2. The pre-form extrusion apparatus for rubber seal preparation of claim 1, further comprising

A first excitation module (11) arranged on the convex part (10),

and a second excitation module (12) disposed on the recess (9).

3. The pre-form extrusion apparatus for rubber seal preparation of claim 1, further comprising

A pushing mechanism (17) arranged at one side of the turntable (2) close to the extruder (1),

and after the connecting rod (6) rotates to the outlet of the extruder (1), the connecting rod moves outwards along the radial direction of the turntable (2) and receives and discharges materials.

4. The pre-profiled extrusion device for rubber seal preparation according to claim 3, characterized in that the pushing mechanism (17) comprises

A support plate (18) fixed in the turntable (2),

a fixing block (19) disposed on an outward side of the support plate (18),

a third excitation module (20) and a fourth excitation module (21), wherein the third excitation module (20) and the fourth excitation module (21) are respectively arranged at two sides of the fixed block (19),

the rotating plate (22) is hinged to the fixed block (19), the rotating plate (22) is in contact with the excitation module III (20) or the excitation module IV (21) after rotating,

the pushing piece (23) is arranged in the rotary disc (2) in a swinging mode and used for pushing the connecting rod (6).

5. The pre-profiled extrusion device for rubber seal preparation according to claim 4, characterized in that the push piece (23) comprises

A hinge lever (24), the end of the hinge lever (24) remote from the hinge axis being movably arranged on the pivoting plate (22),

the push rod is arranged on the hinge rod (24) and pushes the connecting rod (6) along with the rotation of the hinge rod (24).

6. The preforming extrusion device for rubber seal preparation according to claim 5, characterized in that the end of the connecting rod (6) remote from the forming die (4) is provided with a passive push block (25), the diameter of the passive push block (25) being larger than the connecting rod (6).