CN210174131U - Large-rotation demoulding mechanism for U-shaped pipe fitting - Google Patents

Abstract

The utility model provides a big rotatory demoulding mechanism of U type pipe fitting belongs to mould technical field. It has solved the technical problem that current U type pipe fitting injection mold easily leads to the product damage. This big rotatory demoulding mechanism of U type pipe fitting, including movable mould and core, the movable mould internal rotation is connected with the pivot of vertical extension, the upper end of pivot links firmly the shifting block that is used for promoting the return bend to rotate the drawing of patterns, circumference spacing connection has the stopper in the pivot, the spacing groove has been seted up in the movable mould, the stopper is located the spacing inslot, works as the shifting block promote the return bend with when the core separates the stopper with the inside wall of spacing groove supports along the direction of rotation of stopper and leans on. The utility model discloses a yields is higher.

Description

Large-rotation demoulding mechanism for U-shaped pipe fitting

Technical Field

The utility model belongs to the technical field of the mould, a big rotatory demoulding mechanism of U type pipe fitting is related to.

Background

With the development of modern society and the improvement of living standard of people, the thought of people is changed, important process equipment such as mold chamber industrial production and the like are carried out, and the mold industry is basic industry such as national economy and the like. Without the mould, there is no high-quality product, the part processed with the mould, have a series of advantages such as high, of high quality, save material, with low costs of production efficiency. In industrial products, people often require products with a bending degree, an arc shape such as a U shape and the like and with an inward bending shape, such as the products are most common in the fields of automobile air inlet branch pipes, industrial instruments and meters, plastic building material connecting elbows and the like, and the products have special shapes, complex die structures and demolding modes, high manufacturing difficulty and long production period. The design and manufacture of the core-pulling mechanism become the key of the manufacture of the die.

Chinese patent application publication No. CN101670649A discloses a U-shaped pipe fitting injection mold, which comprises a fixed die plate, a movable die plate, a rotary gear, a rib ring, a gap bridge gear, a rack, an oil cylinder, a duplex core, a curved core, a panel, a bottom plate, a supporting block, a push plate, and main parts of a push rod fixing plate, wherein the main parts are characterized in that: and pushing out the movable mould plate to separate the movable mould plate from the cavity of the movable mould, and spinning off the product by using the rib ring.

The mold respectively treats the cores of the straight pipe section and the bent pipe section in a secondary core pulling mode, realizes the demolding of the U-shaped pipe fitting, and has the following defects: the rack drives the rib ring to unscrew the product and then easily drives the product to continue moving to collide with the mold core to cause product damage.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a big rotatory demoulding mechanism of U type pipe fitting, the utility model aims to solve the technical problem that: how to ensure the yield of the bent pipe.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a U type pipe fitting big rotatory demoulding mechanism, includes movable mould and core, the movable mould internal rotation is connected with the pivot of vertical extension, the upper end of pivot links firmly the shifting block that is used for promoting the return bend and rotates the drawing of patterns, a serial communication port, the spacing stopper that is connected with of circumference in the pivot, the spacing groove has been seted up in the movable mould, the stopper is located the spacing inslot, works as the shifting block promote the return bend with when the core separates the stopper with the inside wall of spacing groove supports along the direction of rotation of stopper and leans on.

After the die is opened, the shifting block at the upper end of the rotating shaft is driven by the rotating shaft to rotate so as to push the end surface of the formed bent pipe to rotate along the part of the core bent pipe, and the bent pipe is completely separated from the core. Through set up the spacing stopper of circumference in the pivot, at the inside spacing groove that holds the stopper that sets up of movable mould, promote the return bend rotation and make the inside wall of stopper and spacing groove along the spacing support of direction of rotation when finally separating with the core and lean on when the shifting block, the speed of shifting block can return to zero rapidly after accomplishing the return bend drawing of patterns like this, avoids shifting block initial velocity decay to drive the return bend too slowly and continue quick rotary motion and collide with the core body, guarantees the yields.

In the U-shaped pipe fitting large-rotation demoulding mechanism, the movable mould comprises an ejector plate capable of moving up and down, the lower end of the rotating shaft is connected with the ejector plate in a rotating mode and is axially limited, the surface of the movable mould is provided with a positioning groove matched with the shifting block, and the shifting block can be driven to be separated from the positioning groove when the ejector plate moves upwards. Through the surface setting at the movable mould and shifting block matched with constant head tank, even drive pivot motion also can make the unable motion of shifting block because of the injecing of constant head tank because of the maloperation like this between the drawing of patterns, thereby avoid the maloperation to produce the damage to the return bend, guarantee the yields, the lower extreme that sets up the pivot in addition rotates with the thimble board and is connected and the axial is spacing, like this the die sinking is accomplished the back, but the thimble board upward movement earlier before the drawing of patterns, make the shifting block break away from the constant head tank like this simultaneously, thereby guarantee to rotate smoothly.

In the large-rotation demoulding mechanism for the U-shaped pipe fitting, the shifting block is annular and is sleeved on the peripheral surface of the mold core. The shifting block is annular, the mold core can be synchronously upwards after the shifting block moves upwards along with the rotating shaft, and the shifting block can more uniformly push the acting force of the bent pipe on the end surface of the bent pipe, so that the bent pipe is prevented from being damaged due to overlarge local pressure, and the yield is ensured.

In the large-rotation demoulding mechanism for the U-shaped pipe fitting, the cross section of the rotating shaft is in a special shape, the limiting block is in an annular shape and is sleeved on the outer peripheral surface of the rotating shaft, and the limiting block can slide up and down along the rotating shaft. Through setting up the transversal dysmorphism of personally submitting of pivot, make the stopper cover locate the outer peripheral face of pivot and can slide from top to bottom, the assembly of the stopper of being convenient for like this, stopper vertical position can not change along with the pivot in addition at the drawing of patterns in-process, can reduce the spacing groove along vertical occupation space, reduces the technology degree of difficulty.

In the above-mentioned large-rotation demoulding mechanism for U-shaped pipe fittings, the limiting block includes a sector plate extending in the radial direction, the limiting groove is fan-shaped, and when the shifting block pushes the bent pipe to separate from the core, the end face of the sector plate in the circumferential direction can be attached to the end face of the limiting groove in the circumferential direction. The limiting block comprises the sector plate extending along the radial direction and the limiting groove is arranged to be fan-shaped, so that the end faces of the end face limiting groove of the sector plate are attached to each other when the elbow pipe is separated from the core, and the surface matching is formed, so that the limiting effect can be improved, and the collision damage can be reduced.

In the large-rotation demoulding mechanism for the U-shaped pipe fitting, the corners of the inner side wall of the limiting groove are provided with abdicating circular grooves. Set up through the corner at the spacing inslot lateral wall and let a circular slot, can reduce the most advanced probability that causes the damage to the spacing inslot lateral wall of sector plate like this, improve the mould life-span.

Compared with the prior art, the utility model has the advantages as follows:

1. this big rotatory demoulding mechanism of U type pipe fitting is through setting up the spacing stopper of circumference in the pivot, at the inside spacing groove that holds the stopper that sets up of movable mould, when the shifting block promotes the return bend rotation and make the inside wall of stopper and spacing groove along the spacing support of direction of rotation when finally separating with the core, the speed of shifting block can return to zero rapidly after accomplishing the return bend drawing of patterns like this, avoid shifting block initial velocity decay to drive the return bend too slowly and continue quick rotary motion and collide with the core body, guarantee the yields.

2. The U-shaped pipe fitting large-rotation demoulding mechanism comprises the sector plates extending along the radial direction and the limiting grooves which are arranged in a sector shape through the limiting blocks, so that the end faces of the end face limiting grooves of the sector plates are attached to each other when the bent pipe is separated from the core, and the surface-surface matching is formed, so that the limiting effect can be improved, and the collision damage can be reduced.

Drawings

Fig. 1 is a schematic perspective view of the large-rotation demoulding mechanism for U-shaped pipe fittings.

Fig. 2 is a schematic sectional structure view of the large-rotation demoulding mechanism of the U-shaped pipe fitting.

Fig. 3 is a partial perspective view of the large rotary demoulding mechanism for the U-shaped pipe fitting.

In the figure, 1, a moving die; 11. a limiting groove; 111. a abdication circular groove; 12. an ejector plate; 13. positioning a groove;

2. a core; 3. a rotating shaft; 4. shifting blocks;

5. a limiting block; 51. a sector plate.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, this big rotatory demoulding mechanism of U type pipe fitting includes movable mould 1 and core 2, 1 internal rotation of movable mould is connected with vertical extension's pivot 3, the upper end of pivot 3 links firmly shifting block 4 that is used for promoting the return bend to rotate the drawing of patterns, the last circumference spacing connection of pivot 3 has stopper 5, spacing groove 11 has been seted up in the movable mould 1, stopper 5 is located spacing groove 11, stopper 5 supports along stopper 5's direction of rotation with the inside wall of spacing groove 11 when shifting block 4 promotes the return bend and separates with core 2 and leans on. After the mould is opened, the shifting block 4 at the upper end of the rotating shaft 3 is driven by the rotating shaft 3 to rotate so as to push the end surface of the formed bent pipe to rotate along the bent pipe part of the core, and the bent pipe is completely separated from the core. Through set up spacing stopper 5 of circumference in pivot 3, at the inside spacing groove 11 that holds stopper 5 that sets up of movable mould 1, promote the return bend rotation and make stopper 5 and spacing groove 11's inside wall along the spacing support of direction of rotation when finally separating with core 2 when shifting block 4, the speed of shifting block 4 can return to zero rapidly after accomplishing the return bend drawing of patterns like this, avoid shifting block 4 initial velocity decay to drive the return bend too slowly and continue quick rotary motion and collide with the core body, guarantee the yields. Further, the movable die 1 comprises an ejector plate 12 capable of moving up and down, the lower end of the rotating shaft 3 is rotatably connected with the ejector plate 12 and axially limited, the surface of the movable die 1 is provided with a positioning groove 13 matched with the shifting block 4, and the ejector plate 12 can drive the shifting block 4 to be separated from the positioning groove 13 when moving upwards. Through the surface setting at movable mould 1 and shifting block 4 matched with constant head tank 13, even drive 3 motions of pivot also can make the unable motion of shifting block 4 because of the injecing of constant head tank 13 because of the maloperation like this between the drawing of patterns, thereby avoid the maloperation to produce the damage to the return bend, guarantee the yields, the lower extreme that sets up pivot 3 in addition rotates with thimble board 12 to be connected and the axial is spacing, the die sinking is accomplished the back like this, thimble board 12 upward movement earlier before the drawing of patterns, make shifting block 4 break away from constant head tank 13 like this simultaneously, thereby it is smooth and easy to guarantee to rotate. Preferably, the dial 4 is annular and is fitted around the outer circumferential surface of the core 2. The shifting block 4 is annular, so that the shifting block 4 can more uniformly push the acting force of the bent pipe on the end face of the bent pipe, the bent pipe is prevented from being damaged due to overlarge local pressure, and the yield is guaranteed.

As shown in fig. 3, the cross section of the rotating shaft 3 is shaped in a special shape, the limiting block 5 is annular and is sleeved on the outer peripheral surface of the rotating shaft 3, and the limiting block 5 can slide up and down along the rotating shaft 3. Through the transversal dysmorphism of personally submitting that sets up pivot 3, make stopper 5 cover locate the outer peripheral face of pivot 3 and can slide from top to bottom, the assembly of the stopper 5 of being convenient for like this, stopper 5 vertical position can not change along with pivot 3 in addition at drawing of patterns in-process, can reduce spacing groove 11 along vertical occupation space, reduces the technology degree of difficulty. The limiting block 5 comprises a sector plate 51 extending along the radial direction, the limiting groove 11 is sector-shaped, and when the shifting block 4 pushes the elbow to be separated from the mold core 2, the end face of the sector plate 51 along the circumferential direction can be attached to the end face of the limiting groove 11 along the circumferential direction. The limiting block 5 comprises the sector plates 51 extending along the radial direction and the limiting grooves 11 are arranged to be fan-shaped, so that the end faces of the end face limiting grooves 11 of the sector plates 51 are attached to each other when the elbow is separated from the mold core 2, and the surface and surface matching is formed, so that the limiting effect can be improved, and the collision damage can be reduced. The corner of the inner side wall of the limiting groove 11 is provided with an abdicating circular groove 111. The round groove 111 is arranged at the corner of the inner side wall of the limiting groove 11, so that the probability of damage to the side wall of the limiting groove 11 caused by the tip of the sector plate 51 can be reduced, and the service life of the die is prolonged.

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.

Claims (6)

1. The utility model provides a big rotatory demoulding mechanism of U type pipe fitting, includes movable mould (1) and core (2), the movable mould (1) internal rotation is connected with pivot (3) of vertical extension, the upper end of pivot (3) has linked firmly shifting block (4) that are used for promoting the return bend and rotate the drawing of patterns, a serial communication port, circumference spacing connection has stopper (5) in pivot (3), spacing groove (11) have been seted up in movable mould (1), stopper (5) are located in spacing groove (11), work as shifting block (4) promote the return bend with during core (2) separation stopper (5) with the inside wall of spacing groove (11) supports along the direction of rotation of stopper (5) and leans on.

2. The large-rotation U-shaped pipe demolding mechanism according to claim 1, wherein the movable mold (1) comprises an ejector plate (12) capable of moving up and down, the lower end of the rotating shaft (3) is rotatably connected with the ejector plate (12) and axially limited, the surface of the movable mold (1) is provided with a positioning groove (13) matched with the shifting block (4), and the ejector plate (12) can drive the shifting block (4) to be separated from the positioning groove (13) when moving upwards.

3. The large-rotation U-shaped pipe demolding mechanism according to claim 2, wherein the shifting block (4) is annular and is sleeved on the outer circumferential surface of the core (2).

4. The large-rotation demoulding mechanism for U-shaped pipe fittings according to claim 1, 2 or 3, wherein the cross section of the rotating shaft (3) is specially shaped, the limiting block (5) is annular and sleeved on the outer circumferential surface of the rotating shaft (3), and the limiting block (5) can slide up and down along the rotating shaft (3).

5. The large-rotation U-shaped pipe demolding mechanism according to claim 4, wherein the limiting block (5) comprises a sector plate (51) extending in the radial direction, the limiting groove (11) is sector-shaped, and when the shifting block (4) pushes the bent pipe to be separated from the core (2), the circumferential end face of the sector plate (51) can abut against the circumferential end face of the limiting groove (11).

6. The large-rotation demoulding mechanism for U-shaped pipe fittings according to claim 5, wherein the corners of the inner side walls of the limiting groove (11) are provided with abdicating circular grooves (111).

Images