Core pulling mechanism of elbow injection mold

Abstract

The utility model discloses a core-pulling mechanism of a bent pipe injection mold, which comprises a straight sliding block horizontally arranged on one side of the mold, a rotatable arc-shaped insert is arranged on the mold, and a swing arm is hinged between the lower part of the straight sliding block and the lower part of the arc-shaped insert. A guide structure capable of enabling the arc-shaped insert to rotate to achieve core pulling is arranged between the mold and the arc-shaped insert, a supporting piece for preventing the insert from retreating during injection molding is further arranged on the mold, and a pushing piece capable of pushing the arc-shaped insert to reset is further arranged on the lower portion of the inner side of the straight sliding block. When injection molding is completed and a mold is opened, the straight sliding block moves backwards, the arc-shaped insert is pulled to rotate through the swing arm, core pulling is easily and stably achieved, the structure is simple, cost is low, manufacturing time is short, and assembling is convenient.

Description

【TECHNICAL FIELD]

[0001] The utility model relates to a core pulling mechanism of elbow injection mold.

【BACKGROUND TECHNIQUE]

[0002] More and more plastic products appear in daily life, with the rapid development of plastic industry and the continuous improvement of general and engineering plastics in strength quality etc. The plastic products are all processed through injection mold, and in the mold design and manufacturing process, especially the core pulling structure used on the mold of arc elbow pipe of injection molding automobile etc., since the product has arc elbow pipe reverse buckle, in order to improve the product yield, many adopt oil cylinder core pulling structure, but the oil cylinder core pulling structure is relatively complex, the manufacturing cost is high, causes the manufacturing cost of mold to be high, and the mold manufacturing time is long.

[0003] The utility model discloses a core pulling mechanism of elbow injection mold,

SUMMARY OF THE INVENTION

[0004] The utility model discloses a core pulling mechanism of elbow injection mold, which can simplify the structure, easily and stably realize elbow core pulling, has simple structure, low cost, long manufacturing time and convenient assembly.

[0005] The utility model discloses a core pulling mechanism of elbow injection mold, which can simplify the structure, easily and stably realize elbow core pulling, has simple structure, low cost, long manufacturing time and convenient assembly.

[0006] A core pulling mechanism of elbow injection mold, characterized in that it comprises a straight sliding block horizontally arranged on one side of the mold, an arc-shaped insert rotatable arranged on the mold, a swing arm hinged between the lower part of the straight sliding block and the lower part of the arc-shaped insert, a guide structure arranged between the mold and the arc-shaped insert to enable the arc-shaped insert to rotate and realize core pulling, a supporting piece arranged on the mold to prevent the insert from retreating during injection molding, and a pushing piece arranged on the lower part of the inner side of the straight sliding block to push the arc-shaped insert back to its original position.

[0007] The core pulling mechanism of elbow injection mold as described above, characterized in that the guide structure comprises guide seats arranged on both sides of the arc-shaped insert on the mold, arc-shaped guide grooves arranged on the guide seats, and arc-shaped guide blocks arranged on both sides of the arc-shaped insert and matched with the arc-shaped guide grooves.

[0008] The core pulling mechanism of elbow injection mold as described above, characterized in that a through hole is arranged on the mold, lower grooves for mounting the guide seats are arranged on both sides of the bottom of the through hole, and the top wall of the lower grooves forms the supporting piece to prevent the insert from retreating during injection molding.

[0009] The core pulling mechanism of elbow injection mold as described above, characterized in that a cover plate is arranged on the upper part of the inner side of the straight sliding block, a positioning protrusion is arranged on the inner side of the cover plate, and the arc-shaped insert is provided with a positioning hole which can be sleeved with the positioning protrusion.

[0010] The core-pulling mechanism of a bent pipe injection mold as described above is characterized in that one end of the swing arm is hinged to the lower end of the inner side of the straight sliding block through a first pin, and the other end of the swing arm is hinged to the lower end of the arc-shaped insert through a second pin.

[0011] The core-pulling mechanism of a bent pipe injection mold as described above is characterized in that the upper surface of the mold is provided with protruding mold cores on both sides of the through hole, and the arc-shaped insert rotates between the two mold cores.

[0012] The utility model discloses a beneficial effect is:

[0013] The utility model discloses a horizontal setting in the straight sliding block of mold one side, be equipped with rotatable arc -shaped insert on the mold, the lower part of straight sliding block and the lower part of arc -shaped insert are hinged to swing arm, and the guiding structure that can make arc -shaped insert rotate and realize core -pulling is equipped between the mold and arc -shaped insert. The utility model discloses when opening the mold of injection molding, straight sliding block moves back while through swing arm and pulls arc -shaped insert rotation, and core -pulling is realized easily and stably, and the structure is simple, and the cost is low, and the manufacturing time is long and short, and the assembly is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the perspective drawing of the utility model;

[0015] Figure 2 It is another direction's perspective drawing of the utility model;

[0016] Figure 3 It is the structure explosion drawing of the utility model;

[0017] Figure 4 It is Figure 2 The structure drawing of arc -shaped insert under the state of moving away;

[0018] Figure 5 It is the structure drawing of the mold of the utility model.

CONCRETE EMBODIMENT

[0019] The utility model will be further described in connection with the drawings:

[0020] The core-pulling mechanism of a bent pipe injection mold, including horizontal setting in the straight sliding block 2 of mold 1 one side, be equipped with rotatable arc -shaped insert 3 on the mold 1, the lower part of straight sliding block 2 and the lower part of arc -shaped insert 3 are hinged to swing arm 4, and the guiding structure 5 that can make arc -shaped insert rotation and realize core -pulling is equipped between the mold 1 and arc -shaped insert 3, and the support piece 6 that prevents the insert from retreating when injection molding is still equipped on the mold 1, and the lower part of the inner side of straight sliding block 2 is still equipped with the pusher 7 that can push arc -shaped insert 3 reset. The utility model discloses when opening the mold of injection molding, straight sliding block 2 moves back while through swing arm 4 and pulls arc -shaped insert rotation, realizes core -pulling, and the structure is simple, and the cost is low.

[0021] The guiding structure 5 of the utility model includes the guiding seat 51 which is arranged on both sides of the arc-shaped insert 3 on the mold 1, the arc-shaped guiding groove 52 is arranged on the guiding seat 51, and the arc-shaped guiding block 53 which cooperates with the arc-shaped guiding groove 52 is arranged on both sides of the arc-shaped insert 3. The arc-shaped guiding block 53 can realize core pulling when the arc-shaped insert 3 rotates downward under the action of the arc-shaped guiding groove 52, and the straight sliding block 2 drives the push-up member 7 to push the arc-shaped insert 3 to rotate upward to realize resetting when the straight sliding block 2 moves forward.

[0022] The push-up member 7 of the utility model is preferably a pair, is connected to both sides of the lower swing arm 4 on the inner side of the straight sliding block 2, and the mold 1 is provided with the side recess 10 for the pair of push-up members 7 and the swing arm 4 to pass through on one side of the lower part.

[0023] The mold 1 of the utility model is provided with the through hole 11, the lower recess 12 for installing the guiding seat 51 is arranged on both sides of the bottom of the through hole 11, and the top wall of the lower recess 12 forms the support 6 for preventing the insert from retreating during injection molding. The guiding seat 51 is provided with a mounting hole, and the lower recess 12 is also provided with a mounting hole, and the guiding seat 51 is fixed on the bottom of the mold through a screw.

[0024] The upper part of the inner side of the straight sliding block 2 is provided with the cover plate 8, the inner side of the cover plate 8 is provided with the positioning protrusion 81, the arc-shaped insert 3 is provided with the positioning hole 31 which can be sleeved into the positioning protrusion, the positioning protrusion 81 is inserted into the positioning hole 31 to realize positioning when the arc-shaped insert 3 rotates upward to reset.

[0025] One end of the swing arm 4 is hinged to the lower end of the inner side of the straight sliding block 2 through the first pin 41, the other end of the swing arm 4 is hinged to the lower end of the arc-shaped insert 3 through the second pin 42, and the first pin 41 and the second pin 42 are used as a connecting shaft and a rotating shaft.

[0026] The upper surface of the mold 1 is provided with the protruding mold core 13 on both sides of the through hole 11, and the arc-shaped insert rotates between the two mold cores 13.

[0027] The arc-shaped insert 3 is approximately semicircular and solid tube-shaped as a whole, and is divided into an upper part 301 and a lower part 302, the upper part is used for cooperating with the mold to injection mold products, the lower part is used for cooperating with the straight sliding block 2 to rotate to play a transmission role, and the guiding seat 51 is arranged on both sides of the lower part 302,

[0028] The arc-shaped insert 3 is provided with the avoiding groove 32 in the middle of the lower part, the arc-shaped insert 3 is provided with the shaft hole 33 in the lower part, the shaft hole 33 passes through the avoiding groove 32, and one end of the swing arm 4 can be inserted into the avoiding groove 32.

Claims

1. A core-pulling mechanism for a bent pipe injection mold, characterized in that... It includes a straight slider (2) horizontally arranged on one side of the mold (1), a rotatable arc-shaped insert (3) on the mold (1), a swing arm (4) hinged between the lower part of the straight slider (2) and the lower part of the arc-shaped insert (3), a guide structure (5) between the mold (1) and the arc-shaped insert (3) that allows the arc-shaped insert to rotate to achieve core pulling, a support member (6) to prevent the insert from retracting during injection molding, and a pusher (7) to push the arc-shaped insert (3) back to its original position on the lower part of the inner side of the straight slider (2).

2. The core-pulling mechanism of a bent pipe injection mold according to claim 1, characterized in that... The guide structure (5) includes guide seats (51) provided on both sides of the arc-shaped insert (3) on the mold (1), each guide seat (51) is provided with an arc-shaped guide groove (52), and the arc-shaped insert (3) is provided with arc-shaped guide blocks (53) on both sides that cooperate with the arc-shaped guide groove (52).

3. The core-pulling mechanism of a bent pipe injection mold according to claim 2, characterized in that... The mold (1) is provided with a through hole (11), and the bottom sides of the through hole (11) are provided with a lower groove (12) for installing the guide seat. The top wall of the lower groove (12) forms a support (6) to prevent the insert from moving back during injection molding.

4. The core-pulling mechanism of a bent pipe injection mold according to claim 1, characterized in that... The upper inner side of the straight slider (2) is provided with a cover plate (8), and the inner side of the cover plate (8) is provided with a positioning protrusion (81). The arc-shaped insert (3) is provided with a positioning hole (31) that can be fitted into the positioning protrusion.

5. The core-pulling mechanism of a bent pipe injection mold according to claim 1, characterized in that... One end of the swing arm (4) is hinged to the lower end of the inner side of the straight slider (2) by the first pin (41), and the other end of the swing arm (4) is hinged to the lower end of the arc-shaped insert (3) by the second pin (42).

6. The core-pulling mechanism of a bent pipe injection mold according to claim 1, characterized in that... The upper surface of the mold (1) has protruding mold cores (13) on both sides of the through hole (11), and the arc-shaped insert rotates between the two mold cores (13).

Images