CN214491338U

CN214491338U - Automatic cleaning structure for exhaust groove of injection mold

Info

Publication number: CN214491338U
Application number: CN202023067715.9U
Authority: CN
Inventors: 张金民
Original assignee: Oechsler Plastic Products Taicang Co Ltd
Current assignee: Oechsler Plastic Products Taicang Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-10-26
Anticipated expiration: 2030-12-18

Abstract

An automatic cleaning structure for an exhaust groove of an injection mold comprises the mold, an air valve and an air compressor, wherein the air compressor is connected with the air valve through an air pipe, and the air valve is connected with the mold through the air pipe; the mould is provided with an air inlet pipeline, an air blowing opening, an exhaust groove and an exhaust passage, the air valve is connected with one end of the air inlet pipeline through a pipeline, the air blowing opening is formed in the end portion, far away from the air valve, of the air inlet pipeline, the air blowing opening, the exhaust groove and the exhaust passage are communicated, the exhaust passage is communicated with the outside, and the exhaust groove is communicated with an injection molding cavity of the mould. The utility model discloses injection mold's air discharge duct self-cleaning structure carries out oneself cleanness to the air discharge duct that easily blocks up through compressed air, and the prevention is moulded plastics in-process plastics the precipitate and is adhered to and cause the exhaust jam, realizes the effect that the product quality is up to standard, promotes the product yield, reduces the clear frequency of mould mold insert to reduce the loss, promote the productivity.

Description

Automatic cleaning structure for exhaust groove of injection mold

Technical Field

The utility model belongs to the technical field of mould plastics, specifically, relate to an injection mold's air discharge duct self-cleaning structure.

Background

The injection mold is a tool for producing plastic products, and comprises a front mold and a rear mold which can be opened and closed, wherein after the rear mold and the front mold are closed, a product cavity consistent with the product structure is formed between the rear mold and the front mold, when the injection mold is used for injection molding, the heated and melted plastic is injected into the product cavity from an injection molding machine at high pressure, and the cooled and solidified plastic products are obtained.

In the traditional injection molding industry, for a mold with a deep cavity structure, an exhaust groove in an insert far away from a mold parting surface is easy to block, so that the product quality defect is caused, the mold can only be dismounted from an injection molding machine after the blockage, the mold insert is dismounted and cleaned, the method needs to additionally mount the mold from top to bottom, the waste of raw materials, mold capacity, energy and the like is caused, and the mold insert needs to be dismounted and cleaned for several hours in production under the special condition that the deep cavity mold and production raw material are separated and absorbed to a great extent.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing an injection mold's air discharge duct self-cleaning structure solves the problem that deep cavity mould was easily blockked up at the in-process exhaust of moulding plastics, can clear up the dirty, the assurance of deposit in the air discharge duct in real time in process of production and exhaust unobstructed, solves the product scorching that the exhaust jam caused, contracts, the surface floats fine, undesirable problems such as size unstability.

The technical scheme is as follows: the utility model provides an automatic cleaning structure for an exhaust groove of an injection mold, which comprises a mold, an air valve and an air compressor, wherein the air compressor is connected with the air valve through an air pipe, and the air valve is connected with the mold through the air pipe; the mould is provided with an air inlet pipeline, an air blowing opening, an exhaust groove and an exhaust passage, the air valve is connected with one end of the air inlet pipeline through a pipeline, the air blowing opening is formed in the end portion, far away from the air valve, of the air inlet pipeline, the air blowing opening, the exhaust groove and the exhaust passage are communicated, the exhaust passage is communicated with the outside, and the exhaust groove is communicated with an injection molding cavity of the mould. The utility model discloses injection mold's air discharge duct self-cleaning structure carries out oneself cleanness to the air discharge duct that easily blocks up through compressed air, and the prevention is moulded plastics in-process plastics the precipitate and is adhered to and cause the exhaust jam, realizes the effect that the product quality is up to standard, promotes the product yield, reduces the clear frequency of mould mold insert to reduce the loss, promote the productivity.

Further, foretell injection mold's air discharge duct self-cleaning structure, the mould includes upper fixing plate, runner plate, A board, B board, two supporting shoes and the lower mould fixed plate that the symmetry set up, upper fixing plate, runner plate, A board, B board, two supporting shoes and the lower mould fixed plate that the symmetry set up set gradually according to the order from top to bottom, be equipped with the clearance between the supporting shoe that two symmetries set up.

Further, foretell injection mold's exhaust duct self-cleaning structure, be equipped with the thimble board on the up end of lower mould fixed plate, the thimble board is located the clearance to be equipped with a set of thimble on the thimble board, the upper end of a set of thimble can extend to in the B board.

Furthermore, in the automatic cleaning structure for the exhaust groove of the injection mold, a group of springs is arranged between the upper end face of the ejector plate and the lower end face of the B plate.

Furthermore, according to the automatic cleaning structure for the exhaust duct of the injection mold, the upper mold fixing plate is provided with the group of guide pillars, the lower end parts of the group of guide pillars can penetrate through the flow passage plate and the plate A, the plate B is internally provided with the group of guide sleeves, the group of guide sleeves and the group of guide pillars are arranged in a one-to-one correspondence manner, and the guide pillars extend out of the lower end parts of the plate A and are connected with the guide sleeves in a sliding manner.

Further, foretell injection mold's air discharge duct self-cleaning structure, be equipped with the holding ring on the fixed plate of the mould, be equipped with the runner between fixed plate of the mould, runner plate and the A board, holding ring and runner intercommunication, the die cavity intercommunication on runner and the A board.

Furthermore, according to the automatic cleaning structure for the exhaust groove of the injection mold, the lower end face of the plate A is provided with the positioning protrusion, the upper end face of the plate B is provided with the positioning groove, and the positioning protrusion is arranged in the positioning groove.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: injection mold's air discharge duct self-cleaning structure, simple structure, reasonable, convenient to use, it is with low costs to use, adaptability is good, has very high spreading value.

Injection mold's air discharge duct self-cleaning structure have following advantage:

1. the product defect that the mold insert exhaust groove far away from the parting surface of the mold is blocked and caused can be effectively improved, and the yield is improved.

2. The mold insert exhaust groove which is far away from the parting surface of the mold can be automatically cleaned, the mold does not need to be dismounted from the injection molding machine for cleaning, the extra production stop is avoided, the mold is installed, the waste caused by starting is avoided, the continuous production is facilitated, and the production efficiency is improved.

3. The cleaning of the exhaust groove is carried out in the injection molding process, and production does not need to be stopped.

4. The action of the cleaning exhaust groove receives the instruction of an injection molding machine, the action start and the closing of the cleaning exhaust groove can be accurately controlled according to the injection molding filling condition, and the stability of the cleaning quality is ensured.

5. The utility model discloses applicable various model of moulding plastics, control mechanism can use the original pneumatic valve of injection molding machine and control mechanism thereof, does not have under the condition of its function at the injection molding machine, also adds pneumatic valve and control mechanism outside.

6. The utility model discloses simple structure, installation, maintenance convenience.

Drawings

FIG. 1 is a schematic structural view of an automatic cleaning structure for an exhaust groove of an injection mold according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 5 according to the present invention;

fig. 3 is a schematic view of a partial structure of the mold of the present invention;

fig. 4 is a partial enlarged view of the utility model at B in fig. 3;

fig. 5 is a schematic structural view of the mold of the present invention.

In the figure: the air valve comprises a mold 1, an air inlet pipeline 11, an air blowing opening 12, an exhaust groove 13, an exhaust channel 14, an upper mold fixing plate 15, a runner plate 16, an A plate 17, a B plate 18, a supporting block 19, a lower mold fixing plate 110, a gap 111, an ejector plate 112, an ejector pin 113, a spring 114, a guide pillar 115, a guide sleeve 116, a positioning ring 117, a runner 118, a positioning protrusion 119, a positioning groove 120, an air valve 2 and an air compressor 3.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The automatic cleaning structure for the exhaust groove of the injection mold shown in fig. 1-4 comprises a mold 1, an air valve 2 and an air compressor 3, wherein the air compressor 3 is connected with the air valve 2 through an air pipe, and the air valve 2 is connected with the mold 1 through an air pipe; the injection molding die is characterized in that an air inlet pipeline 11, an air blowing opening 12, an exhaust groove 13 and an exhaust passage 14 are arranged on the die 1, the air valve 2 is connected with one end of the air inlet pipeline 11 through a pipeline, the air blowing opening 12 is arranged on the end portion, far away from the air valve 2, of the air inlet pipeline 11, the air blowing opening 12, the exhaust groove 13 and the exhaust passage 14 are communicated, the exhaust passage 14 is communicated with the outside, and the exhaust groove 13 is communicated with an injection molding cavity of the die 1.

As shown in fig. 5, the mold 1 includes an upper mold fixing plate 15, a runner plate 16, an a plate 17, a B plate 18, two symmetrically disposed supporting blocks 19, and a lower mold fixing plate 110, wherein the upper mold fixing plate 15, the runner plate 16, the a plate 17, the B plate 18, the two symmetrically disposed supporting blocks 19, and the lower mold fixing plate 110 are sequentially disposed from top to bottom, and a gap 111 is disposed between the two symmetrically disposed supporting blocks 19. An ejector plate 112 is arranged on the upper end surface of the lower die fixing plate 110, the ejector plate 112 is positioned in the gap 111, a group of ejector pins 113 is arranged on the ejector plate 112, and the upper ends of the group of ejector pins 113 can extend into the B plate 18. A set of springs 114 is provided between the upper end surface of the ejector plate 112 and the lower end surface of the B plate 18. The upper die fixing plate 15 is provided with a group of guide posts 115, the lower end parts of the group of guide posts 115 can pass through the runner plate 16 and the A plate 17, the B plate 18 is internally provided with a group of guide sleeves 116, the group of guide sleeves 116 and the group of guide posts 115 are arranged in a one-to-one correspondence manner, and the guide posts 115 extend out of the lower end parts of the A plate 17 and are connected with the guide sleeves 116 in a sliding manner. The upper die fixing plate 15 is provided with a positioning ring 117, a runner 118 is arranged among the upper die fixing plate 15, the runner plate 16 and the A plate 17, the positioning ring 117 is communicated with the runner 118, and the runner 118 is communicated with a die cavity on the A plate 17. The lower end face of the A plate 17 is provided with a positioning protrusion 119, the upper end face of the B plate 18 is provided with a positioning groove 120, and the positioning protrusion 119 is arranged in the positioning groove 120.

Increase gas passage to the mould surface at mould exhaust groove jam department, connect compressed air, utilize air valve device control, at the injection moulding in-process, gaseous high-speed high pressure flows outside to the mould by the exhaust groove, discharges the impurity that the injection process produced outside the mould through gas passage to keep the mould exhaust groove to keep unobstructed, realize the self-cleaning of mould exhaust groove.

The utility model discloses injection mold's air discharge duct self-cleaning structure's theory of operation does:

1. the exhaust blocking position of the mold cavity can be determined through mold testing, mold flow analysis, past experience and the like.

2. And manufacturing a gas channel on the die, and connecting the gas channel to a gas exhaust groove at the position where gas exhaust is easy to block.

3. The air pipe is used for connecting the mold with an air valve of an injection molding machine, a compressed air source, an airless valve of the injection molding machine and a control device thereof, and can be externally connected with a control mechanism which is connected with the air valve injection molding machine.

4. Setting the starting point, the closing point and the air pressure of the air exhaust groove of the air blowing cleaning mold.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an injection mold's air discharge duct self-cleaning structure which characterized in that: the device comprises a mould (1), an air valve (2) and an air compressor (3), wherein the air compressor (3) is connected with the air valve (2) through an air pipe, and the air valve (2) is connected with the mould (1) through the air pipe;

the air valve is characterized in that an air inlet pipeline (11), an air blowing opening (12), an exhaust groove (13) and an exhaust channel (14) are arranged on the mold (1), the air valve (2) is connected with one end of the air inlet pipeline (11) through a pipeline, the air blowing opening (12) is arranged on the end portion, away from the air valve (2), of the air inlet pipeline (11), the air blowing opening (12), the exhaust groove (13) and the exhaust channel (14) are communicated, the exhaust channel (14) is communicated with the outside, and the exhaust groove (13) is communicated with an injection molding cavity of the mold (1).

2. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 1, characterized in that: the die (1) comprises an upper die fixing plate (15), a runner plate (16), an A plate (17), a B plate (18), two symmetrically arranged supporting blocks (19) and a lower die fixing plate (110), wherein the upper die fixing plate (15), the runner plate (16), the A plate (17), the B plate (18), the two symmetrically arranged supporting blocks (19) and the lower die fixing plate (110) are sequentially arranged in the order from top to bottom, and a gap (111) is arranged between the two symmetrically arranged supporting blocks (19).

3. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 2, characterized in that: an ejector plate (112) is arranged on the upper end face of the lower die fixing plate (110), the ejector plate (112) is located in the gap (111), a group of ejector pins (113) are arranged on the ejector plate (112), and the upper end portions of the group of ejector pins (113) can extend into the B plate (18).

4. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 3, characterized in that: a group of springs (114) are arranged between the upper end surface of the ejector pin plate (112) and the lower end surface of the B plate (18).

5. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 2, characterized in that: the upper die fixing plate (15) is provided with a group of guide posts (115), the lower end parts of the group of guide posts (115) can penetrate through the runner plate (16) and the plate A (17), the plate B (18) is internally provided with a group of guide sleeves (116), the group of guide sleeves (116) and the group of guide posts (115) are arranged in a one-to-one correspondence mode, and the lower end parts of the guide posts (115) extending out of the plate A (17) are connected with the guide sleeves (116) in a sliding mode.

6. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 2, characterized in that: be equipped with holding ring (117) on last fixed plate (15), be equipped with runner (118) between last fixed plate (15), runner plate (16) and A board (17), holding ring (117) and runner (118) intercommunication, the die cavity intercommunication on runner (118) and A board (17).

7. The automatic cleaning structure for the exhaust groove of the injection mold according to claim 2, characterized in that: the lower end face of the plate A (17) is provided with a positioning protrusion (119), the upper end face of the plate B (18) is provided with a positioning groove (120), and the positioning protrusion (119) is arranged in the positioning groove (120).