CN212652626U - Mould convenient to drawing of patterns - Google Patents
Mould convenient to drawing of patterns Download PDFInfo
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- CN212652626U CN212652626U CN202020950966.2U CN202020950966U CN212652626U CN 212652626 U CN212652626 U CN 212652626U CN 202020950966 U CN202020950966 U CN 202020950966U CN 212652626 U CN212652626 U CN 212652626U
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Abstract
The utility model discloses a mould convenient to drawing of patterns, including workstation, quiet mould, ejection mechanism and link gear. The static die comprises a lower die and an upper die, the lower die is fixed on the workbench, and the upper die is matched with the lower die; a cavity is arranged in the lower die, and a first through hole and a second through hole are longitudinally formed in the top surface of the cavity; the ejection mechanism and the linkage mechanism are arranged in the cavity of the lower die, and the linkage mechanism is fixed with the upper die. The ejection mechanism comprises an ejector rod, a fixed frame, a sliding frame and a limiting column. The ejector rod is movably matched with the sliding frame, and two ends of the ejector rod exceed the sliding frame; the part of the ejector rod between the sliding frames is sleeved with a limiting block and a compression spring, and the limiting block is fixedly connected with the ejector rod. The fixing frame is movably matched with the ejector rod, the two ends of the ejector rod protrude out of the sliding frame, the top end of the ejector rod is in sliding fit with the first through hole, and the bottom end of the ejector rod is in contact with the linkage mechanism. The connecting plate is internally provided with a spring, and two ends of the spring are respectively connected with the columnar seat and the limiting column.
Description
Technical Field
The utility model relates to a cold bodiness mould field especially relates to a bodiness preparation mould of piston tube convenient to drawing of patterns.
Background
Piston tubes are widely used in engines of automobiles, motorcycles, and the like. In order to improve the strength of the piston tube head, the head of the piston tube after the hole expansion needs to be thickened. The thickening of one end of a workpiece is usually completed by the head of the workpiece on a horizontal forging machine, the horizontal forging machine usually has two sets of mechanisms which respectively drive a thickening punch and a clamping static die, the static die is usually designed into an upper split die and a lower split die, the upper die and the lower die clamp the workpiece during operation, and then the thickening punch thickens the head of the workpiece. After the workpiece is machined, the workpiece is difficult to take due to the extrusion of metal.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a mould convenient to drawing of patterns, when the die sinking, the ejector pin will place the piston pipe work piece top pine of intracavity, is convenient for get the piece.
The utility model relates to a mould convenient for demoulding, which comprises a workbench, a static mould, an ejection mechanism and a linkage mechanism;
the static die comprises a lower die and an upper die, the lower die is fixed on the workbench, and the upper die is matched with the lower die; a cavity is formed in the lower die, and a first through hole and a second through hole are longitudinally formed in the top surface of the cavity; the ejection mechanism and the linkage mechanism are arranged in a cavity of the lower die, and the linkage mechanism is fixed with the upper die;
the ejection mechanism comprises an ejector rod, a fixed frame, a sliding frame, a compression spring and a limiting column;
the sliding frame comprises two mounting plates and a limiting plate, two ends of the limiting plate are fixedly connected with one ends of the two mounting plates respectively, first circular through holes are formed in the middle parts of the two mounting plates respectively, and the two first circular through holes are coaxial with the axial center line; the ejector rod is movably matched with the two first circular through holes, and two ends of the ejector rod exceed the mounting plate; the part of the ejector rod, which is positioned between the two mounting plates, is sleeved with a limiting block, and the limiting block is fixedly connected with the ejector rod; the compression spring is sleeved on the ejector rod, two ends of the compression spring respectively abut against the limiting block and the mounting plate far away from the first through hole, and the limiting block abuts against the mounting plate near the first through hole;
the fixing frame comprises two supporting plates and a connecting plate, two ends of the connecting plate are fixedly connected with one ends of the two supporting plates respectively, and the internal distance between the two connecting plates is more than twice of the external distance between the two mounting plates; the middle parts of the two supporting plates are respectively provided with a second circular through hole, and the two second circular through holes are coaxial with the axial center line; the part of the ejector rod, which exceeds the mounting plate, is movably matched with the two second circular through holes, the two ends of the ejector rod protrude out of the support plate, the top end of the ejector rod is in sliding fit with the first through hole, and the bottom end of the ejector rod is in contact with the linkage mechanism;
one side of the connecting plate back support plate is fixedly provided with a columnar seat, and the columnar seat is fixed on the side wall of the cavity; the columnar seat is provided with a mounting hole penetrating through the connecting plate, a first spring is arranged in the mounting hole, one end of the first spring is fixedly connected with the columnar seat, and the other end of the first spring is connected with the limiting column; the limiting post is round-headed by one end of the limiting plate, and chamfers matched with the limiting post are arranged at two ends of the limiting plate.
When the die is closed, the sliding frame is located on the lower side of the fixing frame, the chamfer on the upper side of the sliding frame corresponds to the limiting column, and the limiting column limits upward movement of the sliding frame under the action of the first spring, so that the top end of the ejector rod does not exceed the upper surface of the first through hole. When the upper die is opened upwards, the upper die drives the linkage mechanism to move and simultaneously transmits kinetic energy to the ejector rod of the ejection mechanism, the ejector rod drives the sliding frame to move upwards, so that the chamfer on the upper side of the sliding frame acts on the limiting column, the limiting column is pressed back to the mounting hole, and the limitation of the limiting column on the upward movement of the sliding frame is removed; the ejector rod and the sliding frame move upwards, the ejector rod exceeds the upper surface of the first through hole, and the piston pipe is ejected out of the lower die, so that the piston pipe which is not convenient to demold due to powerful extrusion in the thickening process becomes loose. After the piston tube is ejected, the sliding frame is positioned on the upper side of the fixing frame, the chamfer angle on the lower side of the sliding frame corresponds to the limiting column, and the limiting column limits the downward movement of the sliding frame.
Preferably, the linkage mechanism comprises a rotating plate, a driving rack, a gear, a driven rack and a connecting rod; the middle part of the rotating plate is hinged with the inner wall of the cavity, one end of the upper surface of the rotating plate is contacted with the ejector rod, and the other end of the upper surface of the rotating plate is contacted with the bottom end of the driven rack; the driving rack and the driven rack are respectively positioned on two sides of the gear, the driving rack and the driven rack are both meshed with the gear, and the driving rack and the driven rack are both in sliding connection with the inner wall of the cavity; the connecting rod is in sliding fit with the second through hole, the top of the connecting rod is fixedly connected with the upper die, and the bottom of the connecting rod is connected with the top of the driving rack.
When the upper die moves upwards, the connecting rod drives the driving rack to slide upwards, the gear rotates anticlockwise under the action of the driving rack, the driven rack slides downwards under the action of the gear, the driven rack applies pressure to the rotating plate downwards, the rotating plate rotates clockwise by taking the hinge shaft as a center, and the bottom end of the ejector rod is pushed upwards, so that the ejector rod can realize ejection action.
Preferably, the lower surface of the rotating plate is fixedly provided with a second spring corresponding to the ejector rod, the lower surface of the rotating plate is fixedly provided with a third spring corresponding to the driven rack, the bottom of the driving rack is fixedly provided with a fourth spring, and the second spring, the third spring and the fourth spring are fixedly connected with the bottom of the cavity.
The stress at the two ends of the rotating plate is kept balanced by the arrangement of the second spring and the third spring; through the setting of fourth spring, make the vertical position of initiative rack can fix.
Preferably, the bottom of the connecting rod is fixedly provided with an electromagnet, and the top of the driving rack is provided with a groove corresponding to the shape of the electromagnet.
When the mold is opened, the electromagnet is electrified, so that the connecting rod is connected with the driving rack, and the ejection mechanism executes ejection action; when the die is closed, the electromagnet is powered off, the connecting rod is disconnected with the driving rack, the piston tube to be processed is placed, the ejector rod drives the sliding frame to move downwards by utilizing the gravity of the piston tube and the downward pressure of an operator, the limiting column relieves the limitation on the downward movement of the sliding frame, and the ejector rod is enabled to retreat into the first through hole.
Preferably, an upper thickening cavity and an upper placing cavity which are communicated with each other are arranged on the parting surface of the upper die, a lower thickening cavity and a lower placing cavity which are communicated with each other are arranged on the parting surface of the lower die, after the upper die and the lower die are closed, the upper thickening cavity and the lower thickening cavity are enclosed to form the thickening cavity, and the upper placing cavity and the lower placing cavity are enclosed to form the placing cavity; the first through hole is positioned at the lower side of the lower placing cavity.
The lower placing cavity is used for placing a piston tube to be thickened after reaming, and the head of the piston tube to be thickened is located in the thickening cavity. After the piston tube is placed in the lower placing cavity, the upper die and the lower die are closed downwards, and the piston tube is clamped tightly. The inner diameter of the thickening cavity is larger than the outer diameter of the piston tube head before thickening, and the inner diameter of the thickening cavity is the size of the piston tube head after thickening.
Preferably, the movable die comprises a core die, a sleeve die and a thickening ring; the sleeve die is provided with a through hole which penetrates through the sleeve die in the transverse direction, and the core die is in clearance fit with the through hole of the sleeve die; one end of the cover die, close to the static die, is connected with a thickening ring, the thickening ring and the core die have the same axial center line, and the inner diameter of the thickening ring is larger than the outer diameter of the core die; the thickening ring is matched with the thickening cavity, and the outer diameter of the core mold is larger than the inner diameter of the placing cavity.
When in processing, the core mold extends into the piston pipe to reinforce the piston pipe, and the outer diameter of the core mold needs to be larger than the inner diameter of the placing cavity to realize the reinforcing effect because the piston pipe is reamed; the thickening ring extends into the thickening cavity under the driving of the cover die, and the piston pipe is thickened.
Preferably, the hydraulic support further comprises a first support, a second support, a first hydraulic cylinder, two second hydraulic cylinders and a third hydraulic cylinder;
the first support is fixed on the workbench, the first hydraulic cylinder and the two second hydraulic cylinders are both arranged on the first support, a piston rod of the first hydraulic cylinder is connected with the core mold, a piston rod of the second hydraulic cylinder is connected with the cover mold, and the two second hydraulic cylinders are symmetrically arranged relative to the cover mold; the third hydraulic cylinder is connected with the second support, and a piston rod of the third hydraulic cylinder is connected with the upper die.
The core mould moves towards the static mould under the pressure action of the first hydraulic cylinder, the sleeve mould drives the thickening ring to move towards the static mould under the action of the second hydraulic cylinder, and the thickening of the piston pipe by the thickening ring is realized. Under the action of different hydraulic cylinders, the core mold and the cover mold can move independently without being influenced. The two second hydraulic cylinders acting on the sleeve die are symmetrically arranged relative to the sleeve die, so that the acting force of the thickening ring acting on the piston pipe is balanced, and the thickening quality is improved. The movement speed and the distance of the upper die can be accurately controlled by controlling the upper die through the third hydraulic cylinder.
The beneficial effects of the utility model are embodied in:
according to the piston tube thickening die, due to the fact that the ejection mechanism is arranged, when the die is closed, the sliding frame is located on the lower side of the fixing frame, the chamfer on the upper side of the sliding frame corresponds to the limiting column, the limiting column limits upward movement of the sliding frame under the action of the first spring, and the top end of the ejector rod does not exceed the upper surface of the first through hole. When the upper die is opened upwards, the upper die drives the linkage mechanism to move and simultaneously transmits kinetic energy to the ejector rod of the ejection mechanism, the ejector rod drives the sliding frame to move upwards, so that the chamfer on the upper side of the sliding frame acts on the limiting column, the limiting column is pressed back to the mounting hole, and the limitation of the limiting column on the upward movement of the sliding frame is removed; the ejector rod and the sliding frame move upwards, the ejector rod exceeds the upper surface of the first through hole, and the piston pipe is ejected out of the lower die, so that the piston pipe which is not convenient to demold due to powerful extrusion in the thickening process becomes loose. After the piston tube is ejected, the sliding frame is positioned on the upper side of the fixing frame, the chamfer angle on the lower side of the sliding frame corresponds to the limiting column, and the limiting column limits the downward movement of the sliding frame. When the piston tube to be processed needs to be placed, the ejector rod drives the sliding frame to move downwards by utilizing the gravity of the piston tube and the downward pressure of an operator, the downward movement limit of the limiting column on the sliding frame is removed, and the ejector rod is enabled to retreat into the first through hole.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of a piston tube manufactured by the present invention before and after thickening;
FIG. 3 is an enlarged schematic view of a part I of the present invention;
fig. 4 is a schematic view of the ejection mechanism of the present invention;
FIG. 5 is an enlarged view of part II of the present invention;
reference numerals: 1-a workbench, 2-a first bracket, 3-a movable die, 31-a core die, 32-a thickening ring, 33-a die set, 331-a through hole, 34-a first hydraulic cylinder, 35-a second hydraulic cylinder, 4-a stationary die, 41-an upper die, 42-a lower die, 43-a third hydraulic cylinder, 44-a cavity, 441-a first through hole, 442-a second through hole, 45-a thickening cavity, 451-an upper thickening cavity, 452-a lower thickening cavity, 46-a placing cavity, 461-an upper placing cavity, 462-a lower placing cavity, 5-an ejection mechanism, 51-a mandril, 52-a fixed frame, 521-a supporting plate, 5211-a second circular through hole, 522-a connecting plate, 523-a columnar seat, 5231-a mounting hole and 5232-a first spring, 53-sliding frame, 531-mounting plate, 5311-first circular through hole, 532-limiting plate, 533-limiting block, 534-compression spring, 54-limiting column, 6-linkage mechanism, 61-rotating plate, 611-second spring, 612-third spring, 62-driving rack, 621-fourth spring, 63-gear, 64-driven rack, 65-connecting rod, 651-electromagnet and 7-second support.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. Furthermore, the terms "first", "second", etc. 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.
As shown in fig. 1 to 5, the utility model provides a mold for demolding, which comprises a worktable 1, a static mold 4, an ejection mechanism 5 and a linkage mechanism 6. The static mold 4 comprises a lower mold 42 and an upper mold 41, the lower mold 42 is fixed on the workbench 1, and the upper mold 41 is matched on the lower mold 42; a cavity 44 is arranged in the lower die 42, and a first through hole 441 and a second through hole 442 are longitudinally arranged on the top surface of the cavity 44; the ejection mechanism 5 and the link mechanism 6 are installed in the cavity 44 of the lower mold 42, and the link mechanism 6 is fixed to the upper mold 41.
The ejection mechanism 5 comprises an ejector rod 51, a fixed frame 52, a sliding frame 53, a compression spring 534 and a limiting column 54. The sliding frame 53 comprises two mounting plates 531 and a limiting plate 532, two ends of the limiting plate 532 are respectively fixedly connected with one end of each of the two mounting plates 531, the middle parts of the two mounting plates 531 are respectively provided with a first circular through hole 5311, and the two first circular through holes 5311 are coaxial with the axial center line; the ejector rod 51 is movably matched with the two first circular through holes 5311, and two ends of the ejector rod 51 exceed the mounting plate 531; a part of the ejector rod 51, which is positioned between the two mounting plates 531, is sleeved with a limiting block 533, and the limiting block 533 is fixedly connected with the ejector rod 51; the compression spring 534 is sleeved on the ejector rod 51, two ends of the compression spring 534 respectively abut against the limiting block 533 and the mounting plate 531 far away from the first through hole 441, and the limiting block 533 abuts against the mounting plate 531 near the first through hole 441.
The fixing frame 52 comprises two support plates 521 and a connecting plate 522, two ends of the connecting plate 522 are respectively fixedly connected with one ends of the two support plates 521, and the internal distance between the two connecting plates 522 is more than twice of the external distance between the two mounting plates 531; the middle parts of the two support plates 521 are respectively provided with a second circular through hole 5211, and the two second circular through holes 5211 are coaxial with the axial center line; the part of the top rod 51 beyond the mounting plate 531 is movably matched with the two second circular through holes 5211, both ends of the top rod 51 protrude out of the support plate 521, the top end of the top rod 51 is in sliding fit with the first through hole 441, and the bottom end of the top rod 51 is in contact with the linkage mechanism 6.
One side of the connecting plate 522, which is opposite to the supporting plate 521, is fixedly provided with a columnar seat 523, and the columnar seat 523 is fixed on the side wall of the cavity 44; the columnar seat 523 is provided with a mounting hole 5231 penetrating through the connecting plate 522, a first spring 5232 is arranged in the mounting hole 5231, one end of the first spring 5232 is fixedly connected with the columnar seat 523, and the other end of the first spring 5232 is connected with the limiting column 54; one end of the limiting column 54 close to the limiting plate 532 is round, and chamfers matched with the limiting column 54 are arranged at two ends of the limiting plate 532.
In this embodiment, during mold clamping, the sliding frame 53 is located at the lower side of the fixed frame 52, the chamfer on the upper side of the sliding frame 53 corresponds to the limiting post 54, and the limiting post 54 limits the upward movement of the sliding frame 53 under the action of the first spring 5232, so that the top end of the top rod 51 does not exceed the upper surface of the first through hole 441. When the upper die 41 is opened upwards, the upper die 41 drives the linkage mechanism 6 to move and simultaneously transmits kinetic energy to the ejector rod 51 of the ejection mechanism 5, the ejector rod 51 drives the sliding frame 53 to move upwards, so that the chamfer on the upper side of the sliding frame 53 acts on the limiting column 54, the limiting column 54 is pressed back to the mounting hole 5231, and the limitation of the limiting column 54 on the upward movement of the sliding frame 53 is removed; the ejector rod 51 and the sliding frame 53 move upwards, the ejector rod 51 exceeds the upper surface of the first through hole 441, and the piston pipe is ejected out of the lower die 42, so that the piston pipe which is inconvenient to demould due to strong extrusion in the thickening process becomes loose. After ejecting the piston tube, the sliding frame 53 is located on the upper side of the fixed frame 52, the chamfer of the lower side of the sliding frame 53 corresponds to the limiting column 54, and the limiting column 54 limits the downward movement of the sliding frame 53.
Secondly, the linkage mechanism 6 comprises a rotating plate 61, a driving rack 62, a gear 63, a driven rack 64 and a connecting rod 65; the middle part of the rotating plate 61 is hinged with the inner wall of the cavity 44, one end of the upper surface of the rotating plate 61 is contacted with the mandril 51, and the other end of the upper surface of the rotating plate 61 is contacted with the bottom end of the driven rack 64; the driving rack 62 and the driven rack 64 are respectively positioned at two sides of the gear 63, the driving rack 62 and the driven rack 64 are both meshed with the gear 63, and the driving rack 62 and the driven rack 64 are both connected with the inner wall of the cavity 44 in a sliding manner; the connecting rod 65 is in sliding fit with the second through hole 442, the top of the connecting rod 65 is fixedly connected with the upper die 41, and the bottom of the connecting rod 65 is connected with the top of the driving rack 62.
In this embodiment, when the upper mold 41 moves upward, the link 65 drives the driving rack 62 to slide upward, the gear 63 is driven by the driving rack 62 to rotate counterclockwise, the driven rack 64 is driven by the gear 63 to slide downward, the driven rack 64 presses the rotating plate 61 downward, the rotating plate 61 rotates clockwise around the hinge shaft, and pushes the bottom end of the push rod 51 upward, so that the push rod 51 performs the push-out action.
The lower surface of the rotating plate 61 is fixedly provided with a second spring 611 at a position corresponding to the push rod 51, the lower surface of the rotating plate 61 is fixedly provided with a third spring 612 at a position corresponding to the driven rack 64, the bottom of the driving rack 62 is fixedly provided with a fourth spring 621, and the second spring 611, the third spring 612 and the fourth spring 621 are all fixedly connected with the bottom of the cavity 44.
In the present embodiment, the second spring 611 and the third spring 612 are provided to balance the forces applied to the two ends of the rotating plate 61; the vertical position of the driving rack 62 is fixed by the provision of the fourth spring 621.
An electromagnet 651 is fixedly arranged at the bottom of the connecting rod 65, and a groove corresponding to the electromagnet 651 in shape is formed in the top of the driving rack 62.
In the present embodiment, when the mold is opened, the electromagnet 651 is energized to connect the connecting rod 65 to the driving rack 62, and the ejector mechanism 5 performs the ejection operation; when the die is closed, the electromagnet 651 is powered off, the connection between the connecting rod 65 and the driving rack 62 is disconnected, a piston tube to be processed is placed, the ejector rod 51 drives the sliding frame 53 to move downwards by utilizing the gravity of the piston tube and the downward pressure of an operator, the limit of the limiting column 54 on the downward movement of the sliding frame 53 is released, and the ejector rod 51 is retracted into the first through hole 441.
An upper thickening cavity 451 and an upper placing cavity 461 which are communicated with each other are arranged on the parting surface of the upper die 41, a lower thickening cavity 452 and a lower placing cavity 462 which are communicated with each other are arranged on the parting surface of the lower die 42, after the upper die 41 and the lower die 42 are closed, the upper thickening cavity 451 and the lower thickening cavity 452 enclose a thickening cavity 45, and the upper placing cavity 461 and the lower placing cavity 462 enclose a placing cavity 46; the first through hole 441 is located at the lower side of the lower placing chamber 462.
In this embodiment, lower placement chamber 462 is used to place a piston tube to be thickened after reaming, with the head of the piston tube to be thickened within thickening chamber 45. After the piston tube is placed in the lower placement chamber 462, the upper mold 41 is brought down to mold the lower mold 42 and clamp the piston tube. The inner diameter of the thickening cavity 45 is larger than the outer diameter of the head of the piston tube before thickening, and the inner diameter of the thickening cavity 45 is the size of the thickened head of the piston tube.
The movable mold 3 comprises a core mold 31, a sleeve mold 33 and a thickening ring 32; the cover die 33 is provided with a through hole 331 which transversely penetrates through the cover die, and the core die 31 is in clearance fit with the through hole 331 of the cover die 33; one end of the sleeve die 33 close to the stationary die 4 is connected with a thickening ring 32, the thickening ring 32 and the core die 31 are coaxial with the central line, and the inner diameter of the thickening ring 32 is larger than the outer diameter of the core die 31; the thickened ring 32 is matched with the thickened cavity 45, and the outer diameter of the core mould 31 is larger than the inner diameter of the placing cavity 46.
In this embodiment, during machining, the core mold 31 extends into the piston tube to reinforce the piston tube, and because the piston tube is expanded, the outer diameter of the core mold 31 needs to be larger than the inner diameter of the placing cavity 46 to realize the reinforcing function; the thickening ring 32 is driven by the cover die 33 to extend into the thickening cavity 45, so that the piston tube is thickened.
The mould further comprises a first support 2, a second support 7, a first hydraulic cylinder 34, two second hydraulic cylinders 35 and a third hydraulic cylinder 43. The first support 2 is fixed on the workbench 1, the first hydraulic cylinder 34 and the two second hydraulic cylinders 35 are both installed on the first support 2, the piston rod of the first hydraulic cylinder 34 is connected with the core mold 31, the piston rod of the second hydraulic cylinder 35 is connected with the cover mold 33, and the two second hydraulic cylinders 35 are symmetrically arranged relative to the cover mold 33; the third hydraulic cylinder 43 is connected to the second bracket 7, and a piston rod of the third hydraulic cylinder 43 is connected to the upper die 41.
In this embodiment, the core mold 31 moves toward the stationary mold 4 under the pressure of the first hydraulic cylinder 34, and the sleeve mold 33 moves the thickening ring 32 toward the stationary mold 4 under the pressure of the second hydraulic cylinder 35, thereby thickening the piston tube by the thickening ring 32. Under the action of different hydraulic cylinders, the core die 31 and the cover die 33 can move independently without being influenced by each other. The two second hydraulic cylinders 35 acting on the cover die 33 are symmetrically arranged relative to the position of the cover die 33, so that the acting force of the thickening ring 32 acting on the piston tube is balanced, and the thickening quality is improved. The movement speed and distance of the upper die 41 can be accurately controlled by controlling the upper die 41 through the third hydraulic cylinder 43.
It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting 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 substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (7)
1. The utility model provides a mould convenient to drawing of patterns which characterized in that: comprises a workbench, a static die, an ejection mechanism and a linkage mechanism;
the static die comprises a lower die and an upper die, the lower die is fixed on the workbench, and the upper die is matched with the lower die; a cavity is formed in the lower die, and a first through hole and a second through hole are longitudinally formed in the top surface of the cavity; the ejection mechanism and the linkage mechanism are arranged in a cavity of the lower die, and the linkage mechanism is fixed with the upper die;
the ejection mechanism comprises an ejector rod, a fixed frame, a sliding frame, a compression spring and a limiting column;
the sliding frame comprises two mounting plates and a limiting plate, two ends of the limiting plate are fixedly connected with one ends of the two mounting plates respectively, first circular through holes are formed in the middle parts of the two mounting plates respectively, and the two first circular through holes are coaxial with the axial center line; the ejector rod is movably matched with the two first circular through holes, and two ends of the ejector rod exceed the mounting plate; the part of the ejector rod, which is positioned between the two mounting plates, is sleeved with a limiting block, and the limiting block is fixedly connected with the ejector rod; the compression spring is sleeved on the ejector rod, two ends of the compression spring respectively abut against the limiting block and the mounting plate far away from the first through hole, and the limiting block abuts against the mounting plate near the first through hole;
the fixing frame comprises two supporting plates and a connecting plate, two ends of the connecting plate are fixedly connected with one ends of the two supporting plates respectively, and the internal distance between the two connecting plates is more than twice of the external distance between the two mounting plates; the middle parts of the two supporting plates are respectively provided with a second circular through hole, and the two second circular through holes are coaxial with the axial center line; the part of the ejector rod, which exceeds the mounting plate, is movably matched with the two second circular through holes, the two ends of the ejector rod protrude out of the support plate, the top end of the ejector rod is in sliding fit with the first through hole, and the bottom end of the ejector rod is in contact with the linkage mechanism;
one side of the connecting plate back support plate is fixedly provided with a columnar seat, and the columnar seat is fixed on the side wall of the cavity; the columnar seat is provided with a mounting hole penetrating through the connecting plate, a first spring is arranged in the mounting hole, one end of the first spring is fixedly connected with the columnar seat, and the other end of the first spring is connected with the limiting column; the limiting post is round-headed by one end of the limiting plate, and chamfers matched with the limiting post are arranged at two ends of the limiting plate.
2. A mold for facilitating demolding as claimed in claim 1, wherein:
the linkage mechanism comprises a rotating plate, a driving rack, a gear, a driven rack and a connecting rod; the middle part of the rotating plate is hinged with the inner wall of the cavity, one end of the upper surface of the rotating plate is contacted with the ejector rod, and the other end of the upper surface of the rotating plate is contacted with the bottom end of the driven rack; the driving rack and the driven rack are respectively positioned on two sides of the gear, the driving rack and the driven rack are both meshed with the gear, and the driving rack and the driven rack are both in sliding connection with the inner wall of the cavity; the connecting rod is in sliding fit with the second through hole, the top of the connecting rod is fixedly connected with the upper die, and the bottom of the connecting rod is connected with the top of the driving rack.
3. A mold for facilitating demolding as claimed in claim 2, wherein:
the lower surface of the rotating plate is fixedly provided with a second spring corresponding to the ejector rod, the lower surface of the rotating plate is fixedly provided with a third spring corresponding to the driven rack, the bottom of the driven rack is fixedly provided with a fourth spring, and the second spring, the third spring and the fourth spring are fixedly connected with the bottom of the cavity.
4. A mold for facilitating demolding as claimed in claim 2, wherein:
an electromagnet is fixedly arranged at the bottom of the connecting rod, and a groove corresponding to the electromagnet in shape is formed in the top of the driving rack.
5. A mold for facilitating demolding as claimed in claim 1, wherein:
an upper thickening cavity and an upper placing cavity which are communicated with each other are arranged on the parting surface of the upper die, a lower thickening cavity and a lower placing cavity which are communicated with each other are arranged on the parting surface of the lower die, after the upper die and the lower die are closed, the upper thickening cavity and the lower thickening cavity are enclosed into the thickening cavity, and the upper placing cavity and the lower placing cavity are enclosed into the placing cavity; the first through hole is positioned at the lower side of the lower placing cavity.
6. A mold for facilitating demolding as claimed in claim 1, wherein: the device also comprises a moving die;
the movable die comprises a core die, a sleeve die and a thickening ring; the sleeve die is provided with a through hole which penetrates through the sleeve die in the transverse direction, and the core die is in clearance fit with the through hole of the sleeve die; one end of the cover die, close to the static die, is connected with a thickening ring, the thickening ring and the core die have the same axial center line, and the inner diameter of the thickening ring is larger than the outer diameter of the core die; the thickening ring is matched with the thickening cavity, and the outer diameter of the core mold is larger than the inner diameter of the placing cavity.
7. The mold for facilitating demolding as claimed in claim 6, wherein: the hydraulic cylinder device also comprises a first support, a second support, a first hydraulic cylinder, two second hydraulic cylinders and a third hydraulic cylinder;
the first support is fixed on the workbench, the first hydraulic cylinder and the two second hydraulic cylinders are both arranged on the first support, a piston rod of the first hydraulic cylinder is connected with the core mold, a piston rod of the second hydraulic cylinder is connected with the cover mold, and the two second hydraulic cylinders are symmetrically arranged relative to the cover mold; the third hydraulic cylinder is connected with the second support, and a piston rod of the third hydraulic cylinder is connected with the upper die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020950966.2U CN212652626U (en) | 2020-05-29 | 2020-05-29 | Mould convenient to drawing of patterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020950966.2U CN212652626U (en) | 2020-05-29 | 2020-05-29 | Mould convenient to drawing of patterns |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020381A (en) * | 2021-03-26 | 2021-06-25 | 浙江奥展航空科技有限公司 | Bolt forming device with discharging function and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020381A (en) * | 2021-03-26 | 2021-06-25 | 浙江奥展航空科技有限公司 | Bolt forming device with discharging function and using method thereof |
| CN113020381B (en) * | 2021-03-26 | 2022-10-04 | 浙江奥展航空科技有限公司 | Bolt forming device with discharging function and using method thereof |
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