CN215283128U

CN215283128U - Extrusion type automobile rubber damping die

Info

Publication number: CN215283128U
Application number: CN202121467504.6U
Authority: CN
Inventors: 申传春
Original assignee: Wuxi Shenbo Machinery Manufacturing Co ltd
Current assignee: Wuxi Shenbo Machinery Manufacturing Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-24
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses an extrusion type automobile rubber damping mold which is applied to the field of extrusion type rubber molds and solves the problems that when small-sized rubber products are produced in batches, a flow channel is excessively shunted and rubber cannot be injected into all molding cavities; a material pressing cavity is enclosed between the pressing plate and the lower die, and the pressing plate is connected with the lower die in a sliding manner; the upper die is detachably connected with an upper insert, the lower die is detachably connected with a lower insert, and the upper insert, the lower insert and the middle die are enclosed to form a forming cavity; a plurality of runners are arranged between the material pressing cavity and the molding cavity, and one molding cavity corresponds to one runner; the rubber injection molding device has the advantages that through the arrangement of the pressing plate, semi-finished rubber is extruded into the molding cavities, each molding cavity corresponds to one runner, the flowing time of the rubber in the runners is reduced, and the rubber is injected into each molding cavity.

Description

Extrusion type automobile rubber damping die

Technical Field

The utility model relates to an extrusion formula rubber mold field, in particular to extrusion formula car rubber shock attenuation mould.

Background

At present, chinese patent with publication number CN104441493B discloses a bush injection mold, which comprises an upper mold and a lower mold, wherein the lower mold comprises a lower mold plate and a lower mold frame arranged on the lower mold plate, a plurality of constitutive inserts which are arranged in sequence and are matched with the lower mold plate in a sliding manner are arranged in the lower mold frame, each constitutive insert comprises a left insert and a right insert, and the left insert and the right insert are attached to form a plurality of product molding cavities.

Although this kind of bush injection mold has realized the preparation shaping to the rubber product, in the actual use, some rubber product shapes are less, require the production quantity more, for producing this kind of product, the die cavity of mould generally sets up more, the way of moulding plastics constantly shunts and communicates with every die cavity, rubber is flowing into the way of moulding plastics and then flows into the in-process of shaping chamber by the sprue bushing, because the reposition of redundant personnel is too much, the dwell time overlength in the way of moulding plastics is moulded to the rubber flow, can cool off gradually for some shaping chamber do not pour into rubber into, can not obtain the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an extrusion formula car rubber shock attenuation mould, its advantage is convenient for the less rubber product of batch production shape.

The above technical purpose of the present invention can be achieved by the following technical solutions: an extrusion type automobile rubber damping mold comprises an upper mold, a lower mold and a stripper plate, wherein a middle mold is arranged between the upper mold and the lower mold, and a pressing plate is arranged on one side of the lower mold, which is far away from the middle mold; a material pressing cavity is arranged between the pressing plate and the lower die, and the pressing plate and the lower die are connected in a sliding mode to extrude rubber in the cavity; the upper die is detachably connected with an upper insert, the lower die is detachably connected with a lower insert, and the upper insert, the lower insert and the middle die define a forming cavity; the molding device is characterized in that a flow channel is arranged between the pressing cavity and the molding cavity, the molding cavity is provided with a plurality of molding cavities, and one molding cavity corresponds to one flow channel.

Through the technical scheme, the material pressing cavity is defined by the pressing plate and the lower die and is used for placing semi-finished rubber; the molding cavity is surrounded by an upper insert, a lower insert and a middle mold and is used for rubber molding; the pressing cavity is communicated with the molding cavity and is used for flowing the rubber in the pressing cavity to the molding cavity; one molding cavity corresponds to one runner, so that the flowing time of rubber in the runner is reduced; the pressing plate is connected with the lower die in a sliding manner and is used for extruding rubber in the material pressing cavity so as to inject the rubber into the molding cavity; go up the mold insert, down the mold insert and can dismantle with last mould, lower mould and be connected, be convenient for maintain the change to last mold insert, lower mold insert.

The utility model discloses further set up to: the pressing plate comprises a supporting plate and an extrusion plate fixedly connected with the supporting plate; and one side of the lower die, which is close to the pressing plate, is provided with an extrusion groove for the extrusion plate to slide.

Through above-mentioned technical scheme, rubber sets up in the extrusion groove, and the stripper plate slides along the extrusion groove for extrude rubber to the die cavity, the cavity that the stripper plate encloses when sliding along the extrusion groove is the pressure material chamber.

The utility model discloses further set up to: the lower die is made of 4Cr 13-grade steel, the extrusion plate is embedded with copper bars along the circumferential direction, and the copper bars are made of H70-grade copper.

Through above-mentioned technical scheme, the copper bar inlays to be established in the stripper plate outside, and copper bar and the inboard sliding contact of lower mould, during the slip, the lower production wearing and tearing of copper hardness prevent that the scratch from appearing in the inside wall of lower mould.

The utility model discloses further set up to: the supporting plate is provided with a guide post, and the lower die is provided with a guide hole for the guide post to slide.

Through above-mentioned technical scheme, the guide post sets up in the backup pad, and it has the guiding hole to open on the lower mould, and the guide post slides along the guiding hole, is convenient for guide lower mould and slides along the guide post, prevents that off normal from appearing with the clamp plate in the lower mould, leads to the stripper plate can not slide in the extrusion groove.

The utility model discloses further set up to: the lower die is provided with a plurality of fixing grooves, the lower insert is fixed in the fixing grooves through bolts, the lower die is provided with a through hole, and the lower insert is provided with an injection molding hole matched with the through hole.

Through above-mentioned technical scheme, the through-hole is seted up in the lower mould, and the hole of moulding plastics is seted up in lower mold insert, through-hole and lower mold insert intercommunication for communicate pressure material chamber and shaping chamber.

The utility model discloses further set up to: and a positioning plate is arranged in the fixing groove, and a positioning groove matched with the positioning plate is formed in the lower insert.

Through the technical scheme, the positioning plate is arranged in the fixing groove, the positioning groove is formed in the lower insert, the positioning plate is matched with the positioning groove, the lower insert is positioned at the fixing groove, the through hole is communicated with the lower insert, the upper insert and the lower insert are kept to correspond to each other, and the surface of a product corresponds to each other up and down.

The utility model discloses further set up to: the fixed groove is communicated with an exhaust passage.

Through above-mentioned technical scheme, exhaust passage and fixed slot intercommunication for derive the air in the fixed slot, the rubber of being convenient for is moulded plastics.

The utility model discloses further set up to: the demoulding plate comprises a fixing plate and a demoulding column arranged on the fixing plate, a sliding column is arranged on the fixing plate, and a sliding hole is formed in the middle die.

Through above-mentioned technical scheme, rubber shaping after-cooling is fixed in well mould, and the sliding hole is used for supplying the slip post to slide, and the drawing of patterns post sets up on the fixed plate for ejecting with the product on the well mould.

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

1. by arranging the pressing plate, the semi-finished rubber is extruded into the molding cavities, each molding cavity corresponds to one runner, the flowing time of the rubber in the runners is reduced, and the rubber flows into each molding cavity;

2. the upper insert and the lower insert are detachably connected with the upper die and the lower die, so that the upper insert and the lower insert are convenient to maintain and replace;

3. the copper bar is embedded in the outer side of the pressing plate and in sliding contact with the inner side of the lower die, the copper hardness is low, abrasion is generated, the inner side wall of the lower die is prevented from being scratched, and the service life of the lower die is prolonged.

Drawings

FIG. 1 is an exploded view of the overall structure of the present embodiment;

FIG. 2 is an enlarged schematic view of section A of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of the present embodiment;

fig. 4 is a schematic structural view of the stripper plate of the present embodiment;

FIG. 5 is a schematic exploded view of the upper mold, upper insert and lower insert of the present embodiment;

fig. 6 is an enlarged schematic view of a portion B in fig. 5.

Reference numerals: 1. pressing a plate; 2. a lower die; 3. a middle mold; 4. an upper die; 5. a lower insert; 6. mounting an insert; 7. a support plate; 8. a pressing plate; 9. a guide post; 10. a waist-shaped groove; 11. a copper bar; 12. fixing grooves; 13. a circular groove; 14. a fixing hole; 15. positioning a plate; 16. a through hole; 17. an exhaust passage; 18. a through groove; 19. mounting holes; 20. a slide hole; 21. a card slot; 22. a stripper plate; 23. a fixing plate; 24. demoulding columns; 25. a sliding post; 26. mounting grooves; 27. a limiting plate; 28. a main air passage; 29. a branch airway; 30. a notch; 31. a fixing ring; 32. injection molding holes; 33. and (5) producing the product.

Detailed Description

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

Example (b):

referring to fig. 1 and 3, an extrusion type automobile rubber damping mold comprises a pressing plate 1, and a lower mold 2, a middle mold 3 and an upper mold 4 which are sequentially arranged above the pressing plate 1, wherein a lower insert 5 is fixed on the lower mold 2, and an upper insert 6 is fixed on the upper mold 4; a material pressing cavity is formed by the pressing plate 1 and the lower die 2 in a surrounding mode and used for placing rubber; the upper insert 6, the lower insert 5 and the middle mold 3 enclose a molding cavity for cooling and molding rubber.

Referring to fig. 1, the pressing plate 1 includes a supporting plate 7 and a pressing plate 8 fixed on the supporting plate 7, the supporting plate 7 is a rectangular plate, guide posts 9 are arranged near four corners of the supporting plate 7, waist-shaped grooves 10 are arranged on two opposite sides of the supporting plate 7, and the supporting plate 7 is fixed on the workbench through bolts and the waist-shaped grooves 10; the extrusion plate 8 is the fillet rectangle, and its bottom is provided with the bolt, and through the bolt fastening between extrusion plate 8 and the backup pad 7, the annular caulking groove has been seted up along circumference to extrusion plate 8, and the embedded copper bar 11 that is equipped with of annular caulking groove, copper bar 11 are made by the copper that the brand is H70, and the annular caulking groove is provided with two, and two annular caulking grooves all set up the one end of keeping away from backup pad 7.

Referring to fig. 2 and 3, the lower die 2 is a rectangular plate made of steel with the trademark of 4Cr13, and a pressing groove is formed in one side of the lower die close to the pressing plate 1, and the size and shape of the pressing groove are matched with those of the pressing plate 8; one side, close to the middle die 3, of a lower die 2 plate is provided with a plurality of rows of fixing grooves 12, each row of fixing grooves 12 is provided with a plurality of fixing holes, each fixing groove 12 comprises a

circular groove

13 and 4 fixing holes 14 formed in the periphery of the circular groove 13, a positioning plate 15 is arranged in each fixing groove 12, the position of each positioning plate 15 in each fixing groove 12 is the same, each fixing hole 14 is divided into an upper end and a lower end, the upper end is a circular hole, and the lower end is a bolt hole; a through hole 16 penetrating through the lower die 2 is arranged in the fixing groove 12; the periphery of the fixing grooves 12 is also provided with an exhaust passage 17, and each fixing groove 12 is provided with a through groove 18 communicated with the exhaust passage 17.

Referring to fig. 1 and 4, the middle mold 3 is a rectangular plate, a plurality of mounting holes 19 are formed in the middle mold 3, the mounting holes 19 extend to the middle mold 3 along the circumferential direction to form limiting grooves, the thickness of each limiting groove from the mounting hole 19 to the middle mold 3 is smaller, the size and shape of each mounting hole 19 are consistent with those of the corresponding circular groove 13, the arrangement mode of each limiting groove is the same as that of the corresponding circular groove 13, sliding holes 20 are formed in the middle mold 3, the sliding holes 20 are arranged at the four corners of the middle mold 3, and clamping grooves 21 are formed in the side edges of the middle mold 3 and used for being connected with a workbench; the middle mold 3 is provided with a stripping plate 22 in a matching way, and the stripping plate 22 comprises a fixing plate 23 and a stripping column 24 arranged on the fixing plate 23; the fixed plate 23 is a rectangular plate, four corners of the fixed plate are provided with sliding columns 25, and the sliding columns 25 penetrate through the sliding holes 20 of the middle mold 3 to be connected with the middle mold 3 in a sliding manner; the demolding columns 24 are arranged in a plurality of numbers, the size of the demolding columns 24 is similar to that of the mounting holes 19, and the arrangement mode of the demolding columns 24 is the same as that of the mounting holes 19.

Referring to fig. 3, 5 and 6, the upper mold 4 is a rectangular plate, one side of the upper mold, which is close to the middle mold 3, is provided with a plurality of mounting grooves 26, limiting plates 27 are arranged in the mounting grooves 26, the mounting grooves 26 are externally connected with exhaust passages 17, the exhaust passages 17 comprise main air passages 28 and branch air passages 29 connecting the main air passages 28 and the mounting grooves 26, the branch air passages 29 are criss-cross, the area of the mounting grooves 26 on the upper mold 4 plate is divided into a plurality of squares, and the mounting grooves 26 are arranged in the squares; the upper insert 6 is fixed in the mounting groove 26 through a bolt; the opposite sides of the upper die 4 are provided with waist-shaped grooves 10. The upper insert 6 and the lower insert 5 are both provided with notches 30, the notches 30 are communicated with the through groove 18, and the mounting groove 26 is communicated with the branch air channel 29; four fixing rings 31 are arranged on the outer side of the lower insert 5, the fixing rings 31 are placed in the circular holes and fixed in the fixing holes 14 through bolts, and the lower die 2 is connected with the lower insert 5; injection molding holes 32 are formed in the lower insert 5, the injection molding holes 32 and the through holes 16 correspond to each other one by one to form flow channels, and the flow channels are communicated with the material pressing cavity and the molding cavity.

The working process and principle of the utility model

The semi-finished rubber with the size and the shape consistent with those of a material pressing cavity is placed in the material pressing cavity, a pressing plate 1, an upper die 4, a middle die 3 and a lower die 2 are fixed on a workbench, a guide post 9 extends into the guide hole, the pressing plate 1 is pushed by a hydraulic press to move towards the lower die 2, the rubber is extruded and flows into an injection hole 32 of the lower die insert 5 through a through hole 16 and further flows into a forming cavity enclosed by an upper die insert 6, the middle die 3 and the lower die insert 5, after the rubber is cooled in the forming cavity, the upper die 2 and the lower die 2 are separated, a product 33 stays in a mounting hole 19 of the middle die 3, the middle die 3 is taken out from the workbench, a sliding hole 20 is sleeved on the outer side of a sliding post 25, the middle die 3 slides towards a stripper plate 22 along the sliding post 25, and the stripper plate 24 ejects the product 33.

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. An extrusion type automobile rubber shock-absorbing mould,

the stripper is characterized by comprising an upper die (4), a lower die (2) and a stripper plate (22), wherein a middle die (3) is arranged between the upper die (4) and the lower die (2), and a pressing plate (1) is arranged on one side of the lower die (2) far away from the middle die (3); a material pressing cavity is defined between the pressing plate (1) and the lower die (2), and the pressing plate (1) and the lower die (2) are connected in a sliding mode to press rubber in the material pressing cavity;

the upper die (4) is detachably connected with an upper insert (6), the lower die (2) is detachably connected with a lower insert (5), and the upper insert (6), the lower insert (5) and the middle die (3) enclose a forming cavity;

the molding device is characterized in that a flow channel is arranged between the pressing cavity and the molding cavity, the molding cavity is provided with a plurality of molding cavities, and one molding cavity corresponds to one flow channel.

2. The extrusion type automobile rubber damping die as claimed in claim 1, wherein the pressing plate (1) comprises a supporting plate (7) and an extrusion plate (8) fixedly connected with the supporting plate (7); one side of the lower die (2) close to the pressure plate (1) is provided with an extrusion groove for the extrusion plate (8) to slide.

3. The extrusion type automobile rubber shock absorption die as claimed in claim 2, wherein the lower die (2) is made of steel of 4Cr13 brand, the extrusion plate (8) is embedded with a copper bar (11) along the circumferential direction, and the copper bar (11) is made of copper of H70 brand.

4. The extrusion type automobile rubber shock absorption mold as claimed in claim 3, wherein a guide post (9) is arranged on the support plate (7), and a guide hole for the guide post (9) to slide is formed in the lower mold (2).

5. The extrusion type automobile rubber damping mold according to claim 2, wherein a plurality of fixing grooves (12) are formed in the lower mold (2), the lower insert (5) is fixed in the fixing grooves (12) through bolts, a through hole (16) is formed in the lower mold (2), and an injection molding hole (32) matched with the through hole (16) is formed in the lower insert (5).

6. The extrusion type automobile rubber damping die according to claim 5, wherein a positioning plate (15) is arranged in the fixing groove (12), and a positioning groove matched with the positioning plate (15) is formed in the lower insert (5).

7. The extrusion type automobile rubber damping die as claimed in claim 6, wherein the fixing groove (12) is communicated with an exhaust duct (17).

8. The extrusion type automobile rubber damping die as claimed in claim 1, wherein the stripping plate (22) comprises a fixing plate (23) and a stripping column (24) arranged on the fixing plate (23), a sliding column (25) is arranged on the fixing plate (23), and a sliding hole (20) is arranged on the middle die (3).