CN217073206U - Core pulling device for bent pipe and mold - Google Patents
Core pulling device for bent pipe and mold Download PDFInfo
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- CN217073206U CN217073206U CN202123388740.1U CN202123388740U CN217073206U CN 217073206 U CN217073206 U CN 217073206U CN 202123388740 U CN202123388740 U CN 202123388740U CN 217073206 U CN217073206 U CN 217073206U
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Abstract
The utility model relates to the technical field of mold, especially, relate to a return bend device of loosing core and mould. The core pulling device for the bent pipe comprises a driving mechanism, a transmission mechanism, a mold pulling rack and a mold core; the mold core is connected with the mold drawing rack; the die drawing rack is arranged to be arc-shaped or circular, the meshing surface of the die drawing rack is arranged on the inner ring of the die drawing rack, and the transmission mechanism is arranged on the inner ring of the die drawing rack; the transmission mechanism comprises an input end and an output end, and the output end is provided with an output gear; the input end is connected with the output end of the driving mechanism, and the output gear is meshed with the drawing rack. The transmission mechanism can reduce the torque borne by the drawing rack, prolong the service life of the drawing rack and ensure that the transmission of the bent pipe core-pulling device is more stable; the transmission mechanism is arranged on the inner ring of the drawing die rack, so that the space utilization rate is improved, the whole structure of the device is compact, the layout of the die is compact, the multi-cavity arrangement of the die is facilitated, and the device has more advantages for producing small circular arc products.
Description
Technical Field
The utility model belongs to the technical field of the mould technique and specifically relates to a return bend device of loosing core and mould is related to.
Background
Core-pulling and demoulding are an important process for manufacturing products with bent pipes. In the prior art, most of traditional elbow moulds adopt oil cylinders and connecting rods for transmission to enable elbow mould cores to rotate to complete core pulling actions, and the core pulling mould is simple in structure and low in processing cost, but can only be suitable for round pipe products with small core pulling angles. For a bent pipe product with a large bending angle, in the prior art, a gear and rack transmission structure is usually adopted to realize core-pulling demoulding of the product, namely, an oil cylinder drives a demoulding gear to rotate through a rack, so as to drive a mould core connected to the demoulding gear to be separated from the bent pipe, and demoulding of the bent pipe is realized. In the prior art, a rack is directly meshed with a demoulding gear, and the arrangement has the defects of large torque borne by the demoulding gear, easy abrasion, unstable transmission and the like; and the rack in the prior art is externally tangent to the demoulding gear, so that the whole occupied space is large, and the multi-cavity arrangement of the mould is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect of above prior art, providing a return bend device of loosing core that the transmission is stable, compact structure, reliability are high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a core pulling device for a bent pipe comprises a driving mechanism, a transmission mechanism, a mold pulling rack and a mold core; the mold core is connected with the mold drawing rack; the die drawing rack is arc-shaped or circular, the meshing surface of the die drawing rack is arranged on the inner ring of the die drawing rack, and the transmission mechanism is arranged on the inner ring of the die drawing rack; the transmission mechanism comprises an input end and an output end, the output end is provided with an output gear, the input end is connected to the output end of the driving mechanism, and the output gear is meshed with the drawing die rack.
Furthermore, the core pulling device for the elbow further comprises two mold-pulling guide rails, and the mold-pulling rack is arranged between the two mold-pulling guide rails; one side of the drawing die guide rail, which is close to the drawing die rack, is provided with an arc-shaped bulge, two opposite sides of the drawing die rack are respectively provided with an arc-shaped groove, and the arc-shaped bulge is inserted into the arc-shaped groove.
Furthermore, the elbow core pulling device further comprises a connecting assembly, and the mold core is connected to the mold pulling rack through the connecting assembly; the connecting assembly comprises a connecting mechanism and an unloading mechanism; the linking mechanism is connected between the die drawing rack and the unloading mechanism, the unloading mechanism is connected to the die core, and the unloading mechanism can drive the die core to move linearly.
Furthermore, the unloading mechanism comprises a linear guide rail, an inclined guide pillar and a slide block, the slide block is arranged on the linear guide rail, and the slide block is connected to the mold core; the slide block is provided with an inclined guide post hole, and the axis of the inclined guide post hole is inclined to the axis of the linear guide rail towards the mold core; the inclined guide post is inserted into the inclined guide post hole.
Further, the connecting mechanism comprises a first connecting piece and a second connecting piece, and the first connecting piece is connected to the drawing rack; the axis of the second connecting piece is parallel to the linear guide rail; the slider is provided with a connecting hole, one end of the second connecting piece is inserted into the connecting hole, and the other end of the second connecting piece is connected to the first connecting piece.
Furthermore, the driving mechanism comprises a driving oil cylinder and a spur rack, and the output end of the driving oil cylinder is connected to the spur rack; the input end of the transmission mechanism is provided with an input gear, and the spur rack is meshed with the input gear.
Further, the spur rack comprises an engaging surface and a rack plane opposite to the engaging surface, and the engaging surface is engaged with the input gear; the driving oil cylinder is arranged on the plane of the rack, and the output end of the driving oil cylinder is connected with one end of the straight rack.
Further, the driving mechanism comprises a motor, and an output end of the motor is connected to an input end of the transmission mechanism.
Another object of the utility model is to provide a mould that the transmission is stable, compact structure, reliability is high, production efficiency is high.
In order to realize the purpose, the utility model adopts the following technical scheme:
the mold comprises the elbow core-pulling device and a mold body, wherein the elbow core-pulling device is arranged in the mold body.
Furthermore, the number of the elbow core pulling devices is two, the drawing die rack is arranged in a circular arc shape, and a connecting line of circle centers of the two drawing die racks is smaller than the diameter of the drawing die rack.
The utility model has the advantages that:
the utility model provides a core pulling device for a bent pipe and a mould, wherein the core pulling device for the bent pipe comprises a driving mechanism, a transmission mechanism, a die-drawing rack and a mould core; the mold core is connected with the mold drawing rack; the die drawing rack is arc-shaped or circular, the meshing surface of the die drawing rack is arranged on the inner ring of the die drawing rack, and the transmission mechanism is arranged on the inner ring of the die drawing rack; the transmission mechanism comprises an input end and an output end, and the output end is provided with an output gear; the input end is connected with the output end of the driving mechanism, and the output gear is meshed with the drawing rack. The transmission mechanism can reduce the torque borne by the drawing rack, prolong the service life of the drawing rack and ensure that the transmission of the bent pipe core-pulling device is more stable; the transmission mechanism is arranged on the inner ring of the drawing die rack, so that the space utilization rate is improved, and the whole structure of the device is compact.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an isometric view of a bent pipe core-pulling mold according to an embodiment of the present invention;
fig. 2 is a schematic front view of the core pulling mold for the elbow according to the embodiment of the present invention;
FIG. 3 is a bottom view of FIG. 2;
fig. 4 is a schematic structural view of a connecting assembly of the core pulling mold for bent pipes according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mold according to an embodiment of the present invention.
Icon:
1-a drive mechanism; 11-oil cylinder; 12-a rack;
2-a transmission mechanism; 21-an output gear; 22-input gear;
3-drawing the die rack;
4-a connecting assembly; 41-a joining mechanism; 411 — first connecting member; 412-a second connector; 42-an unloading mechanism; 421-linear guide; 422-connecting hole; 423-inclined guide post; 424-slider; 425-oblique guide post hole;
5, a mold core;
6-drawing the mould guide rail;
7-a limiting mechanism.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1, the present embodiment provides a core pulling device for a bent pipe, including a driving mechanism 1, a transmission mechanism 2, a mold-pulling rack 3 and a mold core 5; the mold core 5 is connected with the mold drawing rack 3; the drawing die rack 3 is arc-shaped or circular, the meshing surface of the drawing die rack 3 is arranged on the inner ring of the drawing die rack, and the transmission mechanism 2 is arranged on the inner ring of the drawing die rack 3; the transmission mechanism 2 comprises an input end and an output end, and the output end is provided with an output gear 21; the input end of the transmission mechanism 2 is connected with the output end of the driving mechanism 1, and the output gear 21 is meshed with the drawing rack 3. Above-mentioned setting for actuating mechanism 1 can be through 2 drive drawing die racks 3 rotations of drive mechanism, and then drives to be connected in drawing die rack 3's mold core 5 and rotate, breaks away from the return bend product until mold core 5, realizes the drawing core drawing of patterns of return bend product. The transmission mechanism 2 can change the torque borne by the drawing rack 3; be different from 1 direct drive of actuating mechanism and take out mould rack 3, set up drive mechanism 2 and make the moment of torsion that takes out mould rack 3 receive diminish, be difficult to take place wearing and tearing, improved the life of taking out mould rack 3, simultaneously, also make the transmission of return bend core pulling device more steady. The drawing rack 3 is arc-shaped or circular, and the meshing surface of the drawing rack is arranged on the inner ring of the drawing rack; the transmission mechanism 2 is arranged on the inner ring of the drawing die rack 3 and is meshed with the meshing surface of the inner ring of the drawing die rack 3 through the output gear 21, the space utilization rate is improved through the arrangement, the overall structure of the device is compact, the layout of the die is compact, and multi-cavity arrangement of the die is facilitated. The return bend device of loosing core more have an advantage to producing small circular arc product, can realize that the radius is the circular arc rotational demoulding of 25 mm.
Alternatively, the transmission 2 is provided as a gearbox.
Furthermore, the core pulling device for the elbow further comprises two mold-pulling guide rails 6, and the mold-pulling racks 3 are arranged between the two mold-pulling guide rails 6; one side of the drawing die guide rail 6 close to the drawing die rack 3 is provided with an arc-shaped bulge, two opposite sides of the drawing die rack 3 are respectively provided with an arc-shaped groove, and the arc-shaped bulge is inserted into the arc-shaped groove. The arc-shaped groove and the arc-shaped protrusion cooperate so that the drawing rack 3 can move between the two drawing guide rails 6 along the extension direction of the arc-shaped protrusion.
With further reference to fig. 2 and 3, in the present embodiment, the driving mechanism 1 includes a driving cylinder 11 and a spur rack 12, and an output end of the driving cylinder 11 is connected to the spur rack 12; the input end of the transmission mechanism 2 is provided with an input gear 22, and the spur rack 12 is meshed with the input gear 22. When the elbow pipe product is demoulded, the output end of the driving oil cylinder 11 extends out, the straight rack 12 is pushed to move along the direction in which the output end of the driving oil cylinder 11 extends out, the input gear 22 meshed with the straight rack 12 is further driven to rotate, and finally the output gear 21 of the transmission mechanism 2 and the drawing rack 3 drive the mold core 5 to be separated from the elbow pipe product. When the core pulling device for the elbow pipe is reset, the output end of the driving oil cylinder 11 retracts, and then the straight rack 12, the transmission mechanism 2 and the die drawing rack 3 drive the die core 5 to reset. Through the action of the accurate control mold core 5 of the driving oil cylinder 11, the stability of product injection molding is improved, and the injection molding cycle is optimized.
Specifically, the spur rack 12 includes an engagement surface, which is engaged with the input gear 22, and a rack plane opposite to the engagement surface; the driving oil cylinder 11 is arranged on the plane of the rack, and the output end of the driving oil cylinder 11 is connected with one end of the straight rack 12. The whole structure of the device is more compact due to the arrangement, and the space utilization rate is improved.
On the basis of the above embodiment, the elbow core pulling device further comprises a limiting mechanism 7. The number of the limiting mechanisms 7 is two, and the two limiting mechanisms are respectively arranged at two ends of the spur rack 12. The limiting mechanism 7 can limit the moving position of the straight rack 12, and further limit the rotating angle of the drawing rack 3. The two limiting mechanisms 7 are arranged, so that the situation that the die core 5 is not completely separated from a product due to too large rotation angle of the die drawing rack 3 and interference with other parts and too small rotation angle are avoided on the one hand; on the other hand, the drawing die rack 3 can rotate to the initial position to start the next production work. Specifically, the limiting mechanism 7 comprises a limiting switch, the limiting switch is connected to the control circuit and can send an electric signal when the straight rack 12 approaches, and the control circuit controls the driving oil cylinder 11 to stop acting, so that the drawing rack 3 stops rotating.
Alternatively, in other embodiments, the driving mechanism 1 comprises a motor, the output of which is connected to the input of the transmission mechanism 2. Illustratively, the output end of the motor is provided with a motor gear, the input end of the transmission mechanism 2 is provided with an input gear 22, and the motor gear is meshed with the input gear 22 to transmit the rotation of the motor to the transmission mechanism 2. Because the motor is not limited by the stroke, the core-pulling demoulding of the bent pipe product with a larger angle can be realized.
Optionally, the elbow core pulling device further comprises a connecting assembly 4, and the mold core 5 is connected to the mold pulling rack 3 through the connecting assembly 4. The connecting assembly 4 comprises a connecting mechanism 41 and an unloading mechanism 42, wherein the connecting mechanism 41 is connected between the drawing die rack 3 and the unloading mechanism 42; the unloading mechanism 42 is connected to the mold core 5, and the unloading mechanism 42 can drive the mold core 5 to move linearly. When the elbow pipe product is demoulded, the unloading mechanism 42 is used for prededemoulding, namely the unloading mechanism 42 drives the mold core 5 to linearly move for a certain distance along the direction of separating from the elbow pipe product, so that the holding force between the mold core 5 and the elbow pipe product is reduced, the mold core 5 and the elbow pipe product are in a loose state, and the drive mechanism 1, the transmission mechanism 2 and the drawing rack 3 are used for driving the mold core 5 to rotate until the mold core 5 completely separates from the elbow pipe product. Because the unloading mechanism 42 can reduce the holding force between the mold core 5 and the bent pipe product, the driving mechanism 1 with smaller driving force can be selected, thereby reducing the production cost and further reducing the occupied space of the device. In addition, when the end of the elbow pipe is provided with a straight pipe, correspondingly, the mold core 5 also comprises a straight mold core and a curved mold core which are connected. When the core pulling and demolding are carried out on the elbow product, the unloading mechanism 42 drives the mold core 5 to move linearly, the straight mold core is separated from the elbow product, the arc of the curved mold core is rotated to be separated from the elbow product through the driving mechanism 1 and the mold drawing rack 3, and the straight mold core is prevented from being deformed and damaged due to the fact that the mold core 5 is directly rotated.
Specifically, referring to fig. 4, the unloading mechanism 42 includes a linear guide rail 421, an inclined guide pillar 423, and a slider 424, the slider 424 is disposed on the linear guide rail 421, and the slider 424 is connected to the mold core 5; the slider 424 is provided with an inclined guide post hole 425, and the axis of the inclined guide post hole 425 inclines to the axis of the linear guide rail 421 towards the mold core 5; the angle posts 423 are inserted into the angle post holes 425. When the mold is unloaded, the inclined guide pillar 423 is pulled out upwards perpendicular to the linear guide rail 421 by the force of the mold opening and closing of the injection molding machine, so that the slider 424 moves along the linear guide rail 421 and towards the opposite direction (i.e. the direction away from the bent pipe product) in which the inclined guide pillar 423 is inclined, and the mold core 5 is driven to be separated from the bent pipe product preliminarily.
Alternatively, the number of the oblique guide posts 423 may be one or more, and accordingly, the number of the oblique guide post holes 425 may be one or more. In this embodiment, the number of the oblique guide posts 423 is set to two, and the two oblique guide posts 423 are respectively disposed on two sides of the linear guide rail 421, so that the slider 424 is stressed uniformly and moves more stably.
After the unloading mechanism 42 finishes the initial demolding of the mold core 5, the mold-drawing rack 3 drives the unloading mechanism 42 to rotate in an arc shape through the connecting mechanism 41, and further drives the mold core 5 to be completely separated from the bent pipe product. Specifically, the engaging mechanism 41 includes a first connecting member 411 and a second connecting member 412, the first connecting member 411 is connected to the drawing rack 3; the axis of the second link 412 is parallel to the linear guide 421; the sliding block 424 is provided with a connecting hole 422, one end of the second connecting member 412 is inserted into the connecting hole 422, and the other end is connected to the first connecting member 411. In this embodiment, the second connecting member 412 is provided in a cylindrical shape, and the corresponding connecting hole 422 is provided in a circular hole. In other embodiments, the second connecting member 412 may also be configured to be polygonal column-shaped, and the corresponding connecting hole 422 is also configured to be a corresponding polygonal column-shaped hole, which is not limited herein.
The utility model also provides a mould, this mould include as above the return bend device of loosing core, still include the die body, above-mentioned return bend device of loosing core sets up in the die body.
Further, in order to improve the production efficiency of the product, in the mold according to this embodiment, the number of the elbow core pulling devices is two.
Referring to fig. 5, the drawing die rack 3 is arranged in a circular arc shape, and the connecting line of the circle centers of the two drawing die racks 3 is smaller than the diameter of the drawing die rack 3, so that the structure of the die is more compact, and the utilization rate of air is improved; and compare and set up to circular in drawing die rack 3, its curved setting can be under the prerequisite of guaranteeing that mold core 5 breaks away from the return bend product completely, save material, reduction in production cost.
The direction of the arrows in fig. 5 indicates the direction of rotation of the two ejector racks 3 when the bent tube product is ejected. Referring to fig. 5, in the present embodiment, the drawing rack 3 has a first end and a second end, and the first end is connected to the mold core 5 and the drawing rack 3. The first end of one of the ejector racks 3 faces the second end of the other ejector rack 3. When the elbow pipe product is demoulded, the rotation directions of the two drawing racks 3 are the same. It can be understood that, when the rotation direction of two drawing racks 3 is the same, two drawing racks 3 are difficult to produce interference when rotating the drawing of patterns, and then can reduce the centre distance with two drawing racks 3 for the overall structure of mould is more compact, further improves the utilization ratio in space.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A core pulling device for a bent pipe is characterized by comprising a driving mechanism (1), a transmission mechanism (2), a mold pulling rack (3) and a mold core (5); the mold core (5) is connected to the mold drawing rack (3); the die drawing rack (3) is arc-shaped or circular, the meshing surface of the die drawing rack (3) is arranged on the inner ring of the die drawing rack, and the transmission mechanism (2) is arranged on the inner ring of the die drawing rack (3); the transmission mechanism (2) is provided with an input end and an output end, the output end is provided with an output gear (21), the input end is connected to the output end of the driving mechanism (1), and the output gear (21) is meshed with the drawing die rack (3).
2. The elbow core pulling device according to claim 1, further comprising two mold drawing guide rails (6), wherein the mold drawing guide rails (6) are arranged, and the mold drawing rack (3) is arranged between the two mold drawing guide rails (6); one side of the drawing die guide rail (6) close to the drawing die rack (3) is provided with an arc-shaped bulge, two opposite sides of the drawing die rack (3) are respectively provided with an arc-shaped groove, and the arc-shaped bulge is inserted into the arc-shaped grooves.
3. The elbow core pulling device according to claim 1, further comprising a connecting assembly (4), wherein the mold core (5) is connected to the mold stripping rack (3) through the connecting assembly (4); the connecting assembly (4) comprises a connecting mechanism (41) and an unloading mechanism (42); the connecting mechanism (41) is connected between the drawing rack (3) and the unloading mechanism (42), the unloading mechanism (42) is connected to the mold core (5), and the unloading mechanism (42) can drive the mold core (5) to move linearly.
4. The elbow core pulling device according to claim 3, wherein the unloading mechanism (42) comprises a linear guide rail (421), an inclined guide post (423) and a sliding block (424), the sliding block (424) is arranged on the linear guide rail (421), and the sliding block (424) is connected to the mold core (5); the sliding block (424) is provided with an inclined guide post hole (425), and the axis of the inclined guide post hole (425) inclines to the axis of the linear guide rail (421) towards the mold core (5); the inclined guide post (423) is inserted into the inclined guide post hole (425).
5. The elbow core pulling device according to claim 4, wherein the engaging mechanism (41) comprises a first connecting piece (411) and a second connecting piece (412), and the first connecting piece (411) is connected to the drawing rack (3); the axis of the second connector (412) is parallel to the linear guide rail (421); the sliding block (424) is provided with a connecting hole (422), one end of the second connecting piece (412) is inserted into the connecting hole (422), and the other end of the second connecting piece is connected to the first connecting piece (411).
6. The elbow core pulling device according to claim 1, wherein the driving mechanism (1) comprises a driving oil cylinder (11) and a spur rack (12), and an output end of the driving oil cylinder (11) is connected to the spur rack (12); an input gear (22) is arranged at the input end of the transmission mechanism (2), and the spur rack (12) is meshed with the input gear (22).
7. The elbow core pulling device according to claim 6, wherein the spur rack (12) comprises an engaging surface and a rack plane opposite to the engaging surface, and the engaging surface is engaged with the input gear (22); the driving oil cylinder (11) is arranged on the rack plane, and the output end of the driving oil cylinder (11) is connected with one end of the straight rack (12).
8. The elbow core pulling device according to claim 1, wherein the driving mechanism comprises a motor, and an output end of the motor is connected to an input end of the transmission mechanism.
9. A mold comprising the elbow core pulling device according to any one of claims 1 to 8, and further comprising a mold body, wherein the elbow core pulling device is disposed in the mold body.
10. The mold according to claim 9, characterized in that the number of the elbow core pulling devices is two, the drawing racks (3) are arranged in a circular arc shape, and a connecting line of the centers of the two drawing racks (3) is smaller than the diameter of the drawing racks (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123388740.1U CN217073206U (en) | 2021-12-29 | 2021-12-29 | Core pulling device for bent pipe and mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123388740.1U CN217073206U (en) | 2021-12-29 | 2021-12-29 | Core pulling device for bent pipe and mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217073206U true CN217073206U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123388740.1U Active CN217073206U (en) | 2021-12-29 | 2021-12-29 | Core pulling device for bent pipe and mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217073206U (en) |
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2021
- 2021-12-29 CN CN202123388740.1U patent/CN217073206U/en active Active
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