CN214872420U - Precise injection mold for assembled shell of automobile muffler - Google Patents

Abstract

The utility model provides an accurate injection mold of car silencer pin-connected panel shell belongs to the injection mold field. The movable mold comprises a movable mold plate, wherein a main mold core is arranged on the movable mold plate, a side mold core arranged on the movable mold plate is arranged at one end of the main mold core, first sliding blocks arranged on the movable mold plate in a sliding mode are respectively arranged on two sides of the side mold core, one end of the main mold core extends to a position between the two first sliding blocks, and a gap is formed between each first sliding block and the side mold core as well as between each first sliding block and the main mold core. Its advantage lies in when the drawing of patterns, moves with the direction that two first sliders kept away from side core and main core earlier, makes first slider and mould a disconnection, reduces the adhesion of moulding the adhesion on the movable mould board, will mould again ejecting, improves the qualification rate of moulding the piece.

Description

Precise injection mold for assembled shell of automobile muffler

Technical Field

The utility model belongs to the injection mold field especially relates to an accurate injection mold of car silencer pin-connected panel shell.

Background

In the course of producing plastic parts using injection molds, some plastic parts are shaped into frames, and the frames have side edges which, due to the large area of adhesion to the mold core, lead to a greater adhesion and are generally thinner. In traditional injection mold, it is ejecting directly to mould the piece through the ejecting mode of ejector pin, nevertheless because the side is weaker and the adhesion is in the movable mould board, because the area is great leads to the adhesion great, and the bad piece of moulding of easy top of traditional ejecting mode leads to the qualification rate of product to be lower.

For example, chinese patent document discloses a garbage can injection mold [ patent application No.: CN201922187226.8], which comprises a movable die and a fixed die, wherein the movable die is provided with a die core, the fixed die is provided with a die cavity, a die cavity for molding the garbage can is formed between the die core and the die cavity, and one side of the fixed die, which is back to the movable die, is provided with a pouring gate communicated with the die cavity; lie in the mold core root on the movable mould and be equipped with the subassembly of unloading, the subassembly of unloading is assembled and to be ejecting to the cover half place orientation with the garbage bin on the mold core when movable mould and cover half separation but because fashioned garbage bin length is higher, consequently and the shaping intracavity wall between the adhesion just very big, the ejecting mode of ejector pin that adopts traditional mode in drawing of patterns in-process leads to the garbage bin to break very easily to lead to the product percent of pass to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a car silencer pin-connected panel shell precision injection mold is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a precision injection mold of car silencer pin-connected panel shell, includes the movable mould board, the movable mould board on be equipped with main core, wherein one end of main core have the side core of setting on the movable mould board, the both sides of side core have a first slider that slides and set up on the movable mould board respectively, wherein one end of main core extend to between two first sliders, and every first slider all with side core and main core between have the clearance.

In the precise injection mold for the assembled shell of the automobile muffler, the movable template is provided with two sliding grooves in one-to-one correspondence with the first sliding blocks, the first sliding blocks slide in the corresponding sliding grooves, and each first sliding block is connected with a first oil cylinder arranged on the movable template.

The automobile muffler assembled shell precision injection mold further comprises a fixed mold plate, a molding cavity is formed between the fixed mold plate and the movable mold plate when the mold is closed, the main mold core and the side mold core are located in the molding cavity, a second oil cylinder is further arranged on the fixed mold plate, a second sliding block which slides in the fixed mold plate is arranged at the end part of an output shaft of the second oil cylinder, two molding shafts and one molding rod are arranged on the second sliding block, and the molding shafts and the molding rods extend into the molding cavity.

In the precise injection mold for the assembled shell of the automobile muffler, the two molding shafts are connected in the fixed template in a sliding manner, the fixed template is provided with a first molding groove and a second molding groove, the first molding groove and the second molding groove are communicated with the molding cavity when the mold is closed, and the two molding shafts respectively penetrate through the first molding groove and the second molding groove.

In the precise injection mold for the assembled shell of the automobile muffler, a gap is formed between the forming shaft positioned in the first forming groove and the inner wall of the first forming groove, which is far away from the movable template, and a gap is formed between the forming shaft positioned in the second forming groove and the inner wall of the second forming groove, which is far away from the movable template.

In the precise injection mold for the assembled shell of the automobile muffler, the fixed template is further provided with a third forming groove, the third forming groove is communicated with the forming cavity when the mold is closed, the end face of the fixed template, which is close to the movable template, serves as the inner wall of the forming cavity, and the forming rod is flush with the end face of the fixed template, which is close to the movable template.

In the precise injection mold for the assembled shell of the automobile muffler, one side of the forming rod is provided with a curved surface.

In the precise injection mold for the assembled shell of the automobile muffler, one side of the main core is connected with the ejector rod in a sliding manner, the ejector rod is connected with the main core in a sliding manner through the I-shaped groove, and two grooves are formed in the end face, close to the fixed die plate, of the ejector rod.

In foretell car silencer pin-connected panel shell precision injection mold, main core and side core on all be equipped with a plurality of apical axis, a plurality of apical axis sets gradually and surrounds including main core and side core along the main core and the side core outside.

In the precise injection mold for the assembled shell of the automobile muffler, a plurality of radiating fins are arranged on the two first sliding blocks, and a plurality of cooling holes are arranged on the movable mold plate and the fixed mold plate in a penetrating manner.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses when the drawing of patterns, earlier with the direction removal of keeping away from side core and main core with two first sliders, make first slider and mould a disconnection, reduce and mould the adhesion of piece adhesion on the movable mould board, it is ejecting to mould the piece again, improves the qualification rate of moulding the piece.

2. The utility model discloses the position of each apical axis just in time is located the tip department of moulding a side, and here is owing to be the turn department of moulding a piece, easy distortion when the drawing of patterns, consequently will mould the ejecting mode of a piece through a plurality of apical axis and can further improve the qualification rate of moulding a piece.

Drawings

Fig. 1 is a schematic view of the present invention as a whole;

FIG. 2 is a schematic diagram of the hidden fixed template of FIG. 1;

FIG. 3 is a schematic illustration of a fixed template.

In the figure: the die comprises a movable die plate 10, a main die core 11, a side die core 12, a first slide block 13, a sliding groove 14, a first oil cylinder 15, a fixed die plate 16, a second oil cylinder 17, a second slide block 18, a forming shaft 19, a forming rod 20, a first forming groove 21, a second forming groove 22, a third forming groove 23, a push rod 24, a groove 25, a push shaft 26, a radiating fin 27 and a cooling hole 28.

Detailed Description

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

Referring to fig. 1-3, the precise injection mold for the assembled shell of the automobile muffler comprises a movable mold plate 10, wherein a main core 11 is arranged on the movable mold plate 10, a side core 12 arranged on the movable mold plate 10 is arranged at one end of the main core 11, first sliders 13 arranged on the movable mold plate 10 in a sliding manner are respectively arranged at two sides of the side core 12, one end of the main core 11 extends between the two first sliders 13, and a gap is formed between each first slider 13 and the side core 12 as well as between each first slider 13 and the main core 11.

In the present embodiment, during the injection molding process, the injection liquid is molded on the surfaces of the main core 11 and the side cores 12, and the injection liquid is injected into the gap between each first slider 13 and the side cores 12 and the main core 11, and the molded part has a frame shape, and the side edges of the frame shape, i.e., the molded part at the gap between each first slider 13 and the side cores 12 and the main core 11, are weaker. In traditional injection mold, it is ejecting directly to mould the piece through the ejecting mode of ejector pin, nevertheless because the side is weak and the adhesion is in movable mould board 10, because the area is great leads to the adhesion great, and the bad piece of moulding of easy top of traditional ejecting mode leads to the qualification rate of product to be lower. Therefore, in the embodiment, during demolding, the two first sliders 13 are moved in the direction away from the side core 12 and the main core 11, so that the first sliders 13 are disconnected from the plastic part, the adhesion force of the plastic part adhered to the movable mold plate 10 is reduced, the plastic part is ejected out, and the yield of the plastic part is improved.

The movable mould plate 10 is provided with two sliding grooves 14 corresponding to the first sliding blocks 13 one by one, the first sliding blocks 13 slide in the corresponding sliding grooves 14, and each first sliding block 13 is connected with a first oil cylinder 15 arranged on the movable mould plate 10.

In this embodiment, during the demoulding operation, the first cylinder 15 operates to move its output shaft with the corresponding first slider 13 away from the side core 12 and the main core 11, so as to disengage from the plastic part. In addition, the first slider 13 slides in the corresponding slide groove 14, and the moving direction of the first slider 13 is restricted, thereby preventing the first slider 13 from sliding in a staggered manner.

The mould is characterized by further comprising a fixed mould plate 16, a forming cavity is formed between the fixed mould plate 16 and the movable mould plate 10 during mould closing, the main mould core 11 and the side mould core 12 are located in the forming cavity, a second oil cylinder 17 is further arranged on the fixed mould plate 16, a second sliding block 18 connected into the fixed mould plate 16 in a sliding mode is arranged at the end portion of an output shaft of the second oil cylinder 17, two forming shafts 19 and one forming rod 20 are arranged on the second sliding block 18, and the forming shafts 19 and the forming rods 20 extend into the forming cavity.

In this embodiment, during the injection molding process, a portion of the injection liquid will form corresponding holes and corresponding grooves in the two molding shafts 19 and the one molding rod 20 for the subsequent assembly of the plastic parts. During demoulding, the second cylinder 17 is operated to disconnect the two moulding shafts 19 and the one moulding rod 20 from the plastic part and extend it out of the plastic part.

The two molding shafts 19 slide in the fixed mold plate 16, a first molding groove 21 and a second molding groove 22 are arranged on the fixed mold plate 16, when the mold is closed, the first molding groove 21 and the second molding groove 22 are communicated with the molding cavity, and the two molding shafts 19 respectively penetrate through the first molding groove 21 and the second molding groove 22.

In this embodiment, during the molding process, the injection molding liquid is injected into the first molding groove 21 and the second molding groove 22 to mold the insert plates, and the holes formed by the molding shafts 19 are located on the corresponding insert plates.

A gap is formed between the forming shaft 19 positioned in the first forming groove 21 and the inner wall of the first forming groove 21 far away from the movable die plate 10, and a gap is formed between the forming shaft 19 positioned in the second forming groove 22 and the inner wall of the second forming groove 22 far away from the movable die plate 10.

In this embodiment, the side surfaces of the molding shaft 19 extending into the first molding groove 21 and the second molding groove 22 are not abutted against the fixed mold plate 16, so that the holes of the insert plate molded in the first molding groove 21 and the second molding groove 22 are closed circular holes.

The fixed die plate 16 is also provided with a third forming groove 23, the third forming groove 23 is communicated with the forming cavity when the die is closed, the end surface of the fixed die plate 16 close to the movable die plate 10 is used as the inner wall of the forming cavity, and the forming rod 20 is flush with the end surface of the fixed die plate 16 close to the movable die plate 10.

In this embodiment, the injection liquid is injected into the gap between the third forming groove 23 and the forming rod 20 to form the socket on the plastic part, similar to the principle of the first forming groove 21 and the second forming groove 22.

One side of the forming rod 20 has a curved surface.

In this embodiment, since a part of the plastic part is molded on the surface of the molding rod 20 after molding, one side of the molding rod 20 has a curved surface which abuts against the fixed mold plate 16, during the demolding process, the molding rod 20 extends out of the plastic part under the driving of the second oil cylinder 17, and since the molding rod 20 and the plastic part have adhesion, the curved surface can prevent the plastic part from being damaged due to abutting against a sharp corner.

One side of the main core 11 is slidably connected with a mandril 24, the mandril 24 is slidably connected with the main core 11 through an I-shaped groove, and two grooves 25 are arranged on the end surface of the mandril 24 close to the fixed die plate 16.

In this embodiment, during the injection process, the injection liquid will form the plastic part in the two grooves 25 on the ejector pin 24, and since the grooves 25 are smaller, in order to prevent the plastic part formed in the grooves 25 from being damaged during the demolding process, the ejector pin 24 pushes the plastic part, and after the plastic part is separated from the main core 11 and the side core 12, the plastic part is finally separated from the grooves 25. In addition, the ejector rod 24 is slidably connected with the main core 11 through an I-shaped groove, so that the moving direction of the ejector rod 24 is limited, and the plastic part in the groove 25 is prevented from being damaged due to the fact that the ejector rod 24 moves in an offset mode.

The main core 11 and the side core 12 are both provided with a plurality of top shafts 26, and the plurality of top shafts 26 are sequentially arranged along the outer sides of the main core 11 and the side core 12 and surround the main core 11 and the side core 12.

In this embodiment, the position of each top shaft 26 is located at the end of the side edge of the plastic part, and the turning part of the plastic part is easy to distort and deform during demolding, so that the yield of the plastic part can be further improved by ejecting the plastic part through a plurality of top shafts 26.

A plurality of cooling fins 27 are arranged on each of the two first sliding blocks 13, and a plurality of cooling holes 28 are arranged on each of the movable die plate 10 and the fixed die plate 16 in a penetrating manner. The cooling forming speed is accelerated.

The utility model discloses a theory of operation does: in the injection molding process, the injection molding liquid is molded on the surfaces of the main mold core 11 and the side mold cores 12, the injection molding liquid is injected into a gap between each first sliding block 13 and each side mold core 12 and the main mold core 11, the molded plastic part is in a frame shape, the frame shape is provided with side edges, in addition, the injection molding liquid is injected into the first molding groove 21 and the second molding groove 22 for molding insert plates, holes formed by the molding shafts 19 are positioned on the corresponding insert plates, and the injection molding liquid is injected into a gap between the third molding groove 23 and the molding rods 20 so as to mold slots on the plastic part.

During the demolding process, the plastic part is directly ejected by the plurality of top shafts 26 and the top rods 24.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the movable die plate 10, the main die core 11, the side die core 12, the first slider 13, the slide groove 14, the first cylinder 15, the fixed die plate 16, the second cylinder 17, the second slider 18, the molding shaft 19, the molding rod 20, the first molding groove 21, the second molding groove 22, the third molding groove 23, the ejector 24, the groove 25, the ejector shaft 26, the heat sink 27, the cooling hole 28, etc. are used more frequently herein, these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a precision injection mold of automobile muffler pin-connected panel shell, includes movable mould board (10), its characterized in that, movable mould board (10) on be equipped with main core (11), wherein one end of main core (11) have side core (12) of setting on movable mould board (10), the both sides of side core (12) have respectively one and slide first slider (13) of setting on movable mould board (10), wherein one end of main core (11) extend to between two first sliders (13), and every first slider (13) all with side core (12) and main core (11) between have the clearance.

2. The precise injection mold for the assembled shell of the automobile muffler as defined in claim 1, wherein the movable mold plate (10) is provided with two sliding grooves (14) corresponding to the first sliding blocks (13) one by one, the first sliding blocks (13) slide in the corresponding sliding grooves (14), and each first sliding block (13) is connected with a first oil cylinder (15) arranged on the movable mold plate (10).

3. The precise injection mold for the assembled shell of the automobile muffler as defined in claim 2, further comprising a fixed mold plate (16), wherein a molding cavity is formed between the fixed mold plate (16) and the movable mold plate (10) during mold closing, the main mold core (11) and the side mold core (12) are located in the molding cavity, the fixed mold plate (16) is further provided with a second oil cylinder (17), a second slide block (18) sliding in the fixed mold plate (16) is arranged at an output shaft end of the second oil cylinder (17), the second slide block (18) is provided with two molding shafts (19) and one molding rod (20), and the molding shafts (19) and the molding rods (20) extend into the molding cavity.

4. The precision injection mold for the assembled shell of the automobile muffler is characterized in that two molding shafts (19) are connected in a fixed template (16) in a sliding mode, a first molding groove (21) and a second molding groove (22) are formed in the fixed template (16), the first molding groove (21) and the second molding groove (22) are communicated with the molding cavity when the fixed template is closed, and the two molding shafts (19) penetrate through the first molding groove (21) and the second molding groove (22) respectively.

5. The precision injection mold for the assembled shell of the automobile muffler is characterized in that a gap is reserved between the forming shaft (19) in the first forming groove (21) and the inner wall, away from the movable template (10), of the first forming groove (21), and a gap is reserved between the forming shaft (19) in the second forming groove (22) and the inner wall, away from the movable template (10), of the second forming groove (22).

6. The precise injection mold for the assembled shell of the automobile muffler as defined in claim 5, wherein the fixed mold plate (16) is further provided with a third forming groove (23), when the mold is closed, the third forming groove (23) is communicated with the forming cavity, the end surface of the fixed mold plate (16) close to the movable mold plate (10) serves as the inner wall of the forming cavity, and the forming rod (20) is flush with the end surface of the fixed mold plate (16) close to the movable mold plate (10).

7. The precision injection mold for the assembled shell of the automobile muffler as recited in claim 6, wherein one side of the forming rod (20) has a curved surface.

8. The precision injection mold of the assembled shell of the automobile muffler as recited in claim 7, wherein one side of the main core (11) is slidably connected with a top bar (24), the top bar (24) is slidably connected with the main core (11) through an I-shaped groove, and two grooves (25) are arranged on the end surface of the top bar (24) close to the fixed mold plate (16).

9. The precision injection mold for the assembled shell of the automobile muffler is characterized in that a plurality of jacking shafts (26) are arranged on the main core (11) and the side core (12), and the jacking shafts (26) are sequentially arranged along the outer sides of the main core (11) and the side core (12) and surround the main core (11) and the side core (12).

10. The precision injection mold for the assembled shell of the automobile muffler is characterized in that a plurality of cooling fins (27) are arranged on each of the two first sliding blocks (13), and a plurality of cooling holes (28) are arranged on the movable mold plate (10) in a penetrating manner.

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