CN111002540A - Core pulling mechanism and injection mold - Google Patents
Core pulling mechanism and injection mold Download PDFInfo
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- CN111002540A CN111002540A CN201911391174.4A CN201911391174A CN111002540A CN 111002540 A CN111002540 A CN 111002540A CN 201911391174 A CN201911391174 A CN 201911391174A CN 111002540 A CN111002540 A CN 111002540A
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- core pulling
- core
- rod
- linear direction
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 238000002347 injection Methods 0.000 title claims abstract description 14
- 239000007924 injection Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 22
- 238000007906 compression Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
- B29C2045/334—Mountings or guides therefor; Drives therefor several transversely movable mould parts driven by a single drive means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a core-pulling mechanism and an injection mold, and relates to the technical field of molds. The core pulling mechanism comprises a driving device, an inclined top and a core pulling assembly; the driving device is used for driving the inclined top to move along a first straight line direction; the core pulling assembly comprises a first elastic piece and a core pulling rod, the first elastic piece is respectively connected with the inclined top and the core pulling rod, and the core pulling rod is connected with the inclined top in a sliding mode along a second linear direction; when the die is closed, the first elastic piece is in a compressed state, and the stretching direction of the first elastic piece is the same as the second linear direction. From this, through set up the subassembly of loosing core on the oblique top, realized loosing core to the specific direction of product structure. Through the cooperation of the compression elastic piece and the core pulling rod, the core pulling rod can be ejected out through the compression elastic piece in the die opening process, and the core pulling movement of the core pulling rod is realized. Meanwhile, when the drawing core rod is not successfully demoulded by compressing the elastic piece, the movement of the drawing core rod driven by the inclined top can be offset, and the product or the mold core is prevented from being damaged by pulling.
Description
Technical Field
The invention relates to the technical field of molds, in particular to a core-pulling mechanism and an injection mold.
Background
In injection moulding product, set up the oblique guide hole of second usually on the movable mould, through oblique guide arm and the oblique guide hole's of second cooperation, turn into the motion of loosing core of pitched roof with the motion of movable mould, nevertheless loose core pitched roof can only move to one direction usually, and the direction of loosing core is more single, to complicated structure, then can't satisfy actual demand.
Disclosure of Invention
The invention solves the problem of single core-pulling direction of the core-pulling inclined top.
In order to solve the problems, the invention provides a core pulling mechanism, which comprises a driving device, an inclined top and a core pulling assembly; the driving device is used for driving the inclined top to move along a first straight line direction; the core pulling assembly comprises a first elastic piece and a core pulling rod, the first elastic piece is respectively connected with the inclined top and the core pulling rod, and the core pulling rod is connected with the inclined top in a sliding mode along a second linear direction; when the die is closed, the first elastic piece is in a compressed state, and the stretching direction of the first elastic piece is the same as the second linear direction.
Therefore, the core pulling component is arranged on the inclined top, so that the core pulling in the specific direction of the product structure is realized. Through the matching of the compression elastic piece and the core pulling rod, the core pulling rod can be ejected out through the compression elastic piece in the die opening process, and the core pulling movement of the core pulling rod is realized. Meanwhile, when the compression elastic piece does not successfully demold the core pulling rod, the movement of the core pulling rod driven by the inclined top can be counteracted, and the product or the mold core is prevented from being damaged by pulling.
Optionally, the device further comprises a movable die and an inclined guide rod, wherein a second inclined guide hole is formed in the movable die, the inclined guide rod is connected with the second inclined guide hole in a sliding mode along the first straight line direction, two axial ends of the inclined guide rod are respectively connected with the inclined top and the driving device, and the driving device is used for driving the inclined guide rod to move along the first straight line direction.
Therefore, the movement of the inclined guide rod is guided through the arrangement of the second inclined guide hole.
Optionally, drive arrangement includes driving piece and mounting panel, be provided with the spout on the mounting panel, oblique guide arm is close to mounting panel one end with spout along third rectilinear direction sliding connection, the driving piece is used for driving the mounting panel moves along fourth rectilinear direction, first rectilinear direction respectively for third rectilinear direction with fourth rectilinear direction slope sets up.
Therefore, the sliding groove is formed in the mounting plate, and the mounting plate is matched with the inclined guide rod, so that the movement of the mounting plate along the fourth linear direction is converted into the movement of the inclined guide rod along the first linear direction.
Optionally, the driving device further comprises a universal seat, the universal seat is connected with the chute in a sliding manner along a third linear direction, and one end of the inclined guide rod, which is close to the mounting plate, is rotatably connected with the universal seat.
Therefore, the inclined guide rod is connected with the universal seat, on one hand, the inclined guide rod is prevented from being directly contacted with the sliding groove to cause damage to the inclined guide rod, and on the other hand, the inclined guide rod can be prevented from being twisted when sliding along the sliding groove through the arrangement of the universal seat.
Optionally, a first inclined guide hole is formed in the inclined top, at least part of the core pulling rod is accommodated in the first inclined guide hole, the core pulling rod is connected with the first inclined guide hole in a sliding manner along a second linear direction, and an included angle is formed between the second linear direction and the first linear direction.
Therefore, the first inclined guide hole is matched with the core pulling rod to act, on one hand, the motion of the core pulling rod is guided, on the other hand, an inclined acting force is provided for the core pulling rod, the motion of the inclined top is converted into the core pulling motion of the core pulling rod, and when the core pulling rod is not successfully demolded in the mold opening process, the core pulling rod is demolded again.
Optionally, the core pulling rod comprises a core pulling rod body and a mold core; one end of the core pulling rod body is connected with the first elastic piece, and the mold core is arranged at one end of the core pulling rod body; the core-pulling direction of the mold core and the second linear direction form an included angle.
Therefore, the core pulling direction of the mold core and the core pulling rod are arranged in an inclined mode, and demolding can be conducted on the mold core in multiple directions conveniently.
Optionally, the device further comprises a push rod, wherein a first guide hole is formed in the oblique top, the push rod is connected with the first guide hole in a sliding mode along a fifth linear direction, and the fifth linear direction is obliquely arranged relative to the first linear direction.
Therefore, in the process that the driving device 4 drives the inclined ejector to eject, the product is ejected in the fifth linear direction through the matching of the push rod and the guide groove.
Optionally, the movable die further comprises a second elastic piece, the second elastic piece is in a compressed state, and the second elastic piece is used for pushing the push rod to approach the movable die; the movable die is provided with a guide groove, and one end of the push rod, close to the movable die, is accommodated in the guide groove in a die closing state.
Therefore, the push rod is pushed to be in contact with the movable die through the arrangement of the compression elastic piece, and the push rod is convenient to return to the guide groove in the die closing process.
Optionally, a receiving groove is formed in the inclined top, the receiving groove is formed in a side wall of the first guide hole, and the second elastic piece is received in the receiving groove.
Therefore, the second elastic piece is protected through the arrangement of the accommodating groove, and meanwhile, the accommodating groove is arranged on the side wall of the first guide hole, so that the space is fully utilized, and the volume of the inclined top is reduced.
Optionally, the movable die further comprises a guide rod, the guide rod is vertically arranged, two ends of the guide rod are respectively connected with the lifter and the driving device, a second guide hole is formed in the movable die, and the guide rod is connected with the second guide hole in a sliding mode.
Therefore, when the product is ejected by the inclined top, the stress of the inclined guide rod can be reduced through the contact between the guide rod and the inclined top.
Optionally, a circulation waterway is arranged in the pitched roof and used for cooling the pitched roof.
Therefore, through the arrangement of the circulating water path, cooling water is introduced into the circulating water path, and the inclined roof is cooled.
Optionally, the water circulation device further comprises at least two water connectors, the inclined guide rods are hollow rods and communicated with the circulation water path, and the number of the inclined guide rods is two; one end of the inclined guide rod, which is far away from the inclined top, is communicated with the water joint.
Therefore, the inclined guide rod is hollow, and the hollow rod is communicated with the circulating water channel, so that the whole moving part of the core pulling mechanism is cooled.
In another aspect, the invention provides an injection mold comprising any one of the core-pulling mechanisms described above. The beneficial effects of the injection mold are the same as those of the core-pulling mechanism, and are not described again here.
Drawings
FIG. 1 is a schematic structural diagram of a product in an embodiment of the invention;
FIG. 2 is an enlarged view of a portion of the present invention at I of FIG. 1;
FIG. 3 is a schematic structural view of an injection mold in a mold clamping state according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an injection mold in an open state according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an injection mold in an ejection state according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a driving device according to an embodiment of the present invention;
FIG. 7 is an exploded view of a core pulling mechanism in an embodiment of the present invention;
FIG. 8 is a schematic view of an ejection mechanism in an embodiment of the invention;
fig. 9 is a cross-sectional view of an ejection mechanism at a plunger rod in an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a mold core in an embodiment of the invention;
FIG. 11 is a schematic structural view of the push rod of the embodiment of the present invention before being ejected;
FIG. 12 is a schematic structural diagram of the push rod of the embodiment of the present invention after being ejected;
FIG. 13 is a schematic structural view of the core-pulling rod after being ejected from the mold in the embodiment of the present invention;
fig. 14 is a schematic structural view of the core pulling rod before being ejected from the mold in the embodiment of the invention.
Description of reference numerals:
1-product, 11-clamping hole, 12-barb, 3-movable mould plate, 4-driving device, 5-fixed mould core, 6-fixed mould plate, 7-movable mould core, 21-inclined guide rod, 22-universal seat, 23-guide rod, 24-inclined top, 26-loose core component, 31-second inclined guide hole, 41-mounting plate, 42-sliding groove, 71-guide groove, 241-first guide hole, 242-accommodating groove, 243-first inclined guide hole, 251-push rod, 252-second elastic part, 253-abutting part, 261-loose core rod, 262-first elastic part, 263-elastic part mounting seat, 264-loose core rod body, 265-second mould core and 266-first mould core.
Detailed Description
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or a rotatable connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In addition, all directions or positional relationships mentioned in the embodiments of the present invention are positional relationships based on the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not imply or imply that the referred device or element must have a specific orientation, and are not to be construed as limiting the present invention. An XYZ coordinate system is provided in the present invention, in which a forward direction of an X axis represents a right direction, a reverse direction of the X axis represents a left direction, a forward direction of a Y axis represents a front direction, a reverse direction of the Y axis represents a rear direction, a forward direction of a Z axis represents an upper direction, and a reverse direction of the Z axis represents a lower direction, wherein "forward", "rear", "left", "right", "up", and "down" do not constitute a limitation to a specific structure, and are based only on positions in the drawings. The terms "first," "second," "third," "fourth," and "fifth," etc. are used herein for convenience of description and are not to be construed as limiting the specific numbers.
As shown in fig. 1, for the molding of the partial structure on the middle frame, a plurality of core-pulling inserts may be provided on the lifter 24, and different core-pulling inserts are respectively used for the molding of different structures on the middle frame. As shown in fig. 2, a clamping hole 11 is provided on a side surface of the middle frame, and an barb 12 is provided on a side wall of the clamping hole 11, and the preferred embodiment of the present invention is directed to the expansion of the clamping hole 11 and the core pulling of the barb 12.
As shown in fig. 3, fig. 3 is a schematic structural diagram of an injection mold in a mold clamping state according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of an injection mold in an open state according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a structure of the product ejected in the embodiment of the present invention. The moving die referred to herein refers to the moving die plate 3 and the moving die core 7, but on the premise that no contradiction occurs, the moving die may also refer to the moving die plate 3 or the moving die core 7; the fixed die refers to a fixed die plate 6 and a fixed die core 5, but the fixed die can also refer to the fixed die plate 6 or the fixed die core 5 on the premise of no contradiction.
Referring to fig. 9, an embodiment of the present invention provides a core pulling mechanism, which includes a driving device 4, a slanted ejecting part 24 and a core pulling assembly 26; the driving device 4 is used for driving the inclined top 24 to move along a first linear direction; the core pulling assembly 26 comprises a first elastic piece 262 and a core pulling rod 261, the first elastic piece 262 is respectively connected with the inclined top 24 and the core pulling rod 261, and the core pulling rod 261 is connected with the inclined top 24 in a sliding mode along a second linear direction; in the mold clamping state, the first elastic member 262 is in a compressed state, and the expansion and contraction direction of the first elastic member 262 is the same as the second linear direction.
The driving device 4 may be an oil cylinder driving device or a jack rod driving device. The driving device 4 may be directly connected to the lifter 24, or may be connected to the lifter 24 through another conversion structure, and the driving device 4 drives the conversion structure to move, and converts the movement of the conversion structure into the movement of the lifter 24. Here, the first and second linear directions are only for convenience of description. The core bar 261 may be provided with a core or an insert, and the first elastic member 262 may be a spring or other elastic material. In this embodiment, taking a spring as an example, in a mold closing state, the spring is in a compression state, the spring pushes the core pulling rod 261 to contact with the fixed mold, the driving device 4 is connected with the movable mold, and in a mold opening state, the driving device 4 follows the movable mold to move reversely along the Y axis, and at the same time, the fixed mold releases the restriction on the core pulling rod 261, at this time, there are two possible situations, the first situation: the core pulling rod 261 is successfully demoulded under the thrust action of a spring, after the mould is opened, the driving device 4 drives the inclined top 24 to perform ejection motion along a first linear direction, and the core pulling rod 261 and the inclined top 24 move together. In the second case: as shown in fig. 14, the core pulling rod 261 is not successful in demolding under the thrust of the spring, after the mold is opened, because the spring is in a compressed state, when the driving device 4 drives the lifter 24 to perform the ejection motion along the first linear direction, the spring extends to counteract the acting force of the lifter 24, so as to avoid pulling out the product or the mold core.
The advantage of this arrangement is that by providing the core pulling assembly 26 on the slanted ejecting part, core pulling in a specific direction of the product structure is achieved. Through the cooperation of the compression elastic piece and the core-pulling rod 261, in the mold opening process, the core-pulling rod 261 can be ejected out through the compression elastic piece, and the core-pulling movement of the core-pulling rod 261 is realized. Meanwhile, when the compression elastic piece does not successfully demold the core pulling rod 261, the movement of the core pulling rod 261 driven by the inclined top 24 can be counteracted, and the product or the mold core is prevented from being damaged by pulling.
As shown in fig. 3 to 8, the core pulling mechanism further includes a movable die and an inclined guide rod 21, the movable die is provided with a second inclined guide hole 31, the inclined guide rod 21 and the second inclined guide hole 31 are slidably connected along the first linear direction, two axial ends of the inclined guide rod 21 are respectively connected with the inclined top 24 and the driving device 4, and the driving device 4 is configured to drive the inclined guide rod 21 to move along the first linear direction.
It should be noted that the second inclined guide hole 31 is arranged along the first linear direction, the inclined guide rod 21 is inserted into the second inclined guide hole 31, the second inclined guide hole 31 penetrates through the movable mold, the lower end of the inclined guide rod 21 is connected with the driving device 4 below the movable mold, and the upper end of the inclined guide rod 21 is connected with the inclined top 24, where the driving device 4 first drives the inclined guide rod 21 to move, and the inclined top 24 is connected with the inclined guide rod 21, so that the driving device drives the inclined top 24 to move. The movement of the diagonal guide bar 21 is guided by the arrangement of the second diagonal guide hole 31.
As shown in fig. 6, the driving device 4 includes a driving member and a mounting plate 41, a sliding slot 42 is disposed on the mounting plate 41, one end of the inclined guide rod 21 close to the mounting plate 41 is slidably connected to the sliding slot 42 along a third linear direction, the driving member is configured to drive the mounting plate 41 to move along a fourth linear direction, and the first linear direction is respectively disposed obliquely relative to the third linear direction and the fourth linear direction.
It should be noted that, as shown in fig. 5, the sliding groove 42 is disposed along a third linear direction (X-axis direction), the driving device 4 is disposed below the movable mold, the driving member drives the mounting plate 41 to move along the Y-axis direction, and when the driving device 4 drives the lifter 24 to perform the ejecting motion, because the first linear direction is inclined relative to the fourth linear direction, at this time, the sliding groove 42 is disposed on the mounting plate 41, so that one end of the inclined guide rod 21 close to the mounting plate 41 can slide in the sliding groove 42. When the driving device 4 drives the lifter 24 to perform the ejecting motion, the driving device 4 drives the mounting plate 41 to move along a fourth linear direction (Y-axis direction), at this time, the inclined guide rod 21 moves upward along the Y-axis direction on one hand, and moves along the first linear direction on the other hand, and in this process, one end of the inclined guide rod 21 close to the mounting plate 41 slides in the opposite direction along the sliding groove 42 towards the X-axis. Therefore, by arranging the slide groove 42 on the mounting plate 41, the movement of the mounting plate 41 along the fourth linear direction is converted into the movement of the inclined guide rod 21 along the first linear direction in cooperation with the inclined guide rod 21.
As shown in fig. 6, the driving device further includes a universal base 22, the universal base 22 is slidably connected to the sliding groove 42 along a third linear direction, and one end of the inclined guide rod 21 close to the mounting plate 41 is rotatably connected to the universal base 22. In this embodiment, one end of the inclined guide rod 21 close to the mounting plate 41 is not directly connected with the sliding groove 42 in a sliding manner, but is connected with the universal base 22 through the inclined guide rod 21, and then is connected with the sliding groove 42 through the universal base 22 in a sliding manner. The advantage of this arrangement is that, through the connection between the angle guide 21 and the universal seat 22, on the one hand, damage to the angle guide 21 caused by the direct contact between the angle guide 21 and the sliding groove 42 is avoided, and on the other hand, through the arrangement of the universal seat 22, distortion of the angle guide 21 when sliding along the sliding groove 42 can be avoided.
As shown in fig. 7 to 9, a first inclined guide hole 243 is formed in the inclined top 24, the core pulling rod 261 is at least partially received in the first inclined guide hole 243, the core pulling rod 261 is slidably connected with the first inclined guide hole 243 along a second linear direction, and the second linear direction forms an included angle with the first linear direction.
It should be noted that the first inclined guide hole 243 is arranged along the second linear direction, and the plunger 261 is inserted into the first inclined guide hole 243. Here, an elastic member mounting seat 263 is provided in the first inclined guide hole 243, and both ends of the elastic member are connected to the elastic member mounting seat 263 and the plunger rod 261, respectively. In a mold closing state, the core rod 261 may be completely accommodated in the first inclined guide hole 243, and when the lifter 24 performs an ejection motion along the first linear direction, the core rod 261 may be driven to move along the first linear direction, and under the action of the compression spring, the core rod 261 extends out of the first inclined guide hole 243. In the mold opening process, when the core pulling rod 261 is not successfully demolded under the thrust of a spring, after the mold opening, the driving device 4 drives the inclined ejector 24 to perform ejection motion along a first linear direction, at this time, the first inclined guide hole 243 can provide an inclined acting force to the core pulling rod 261, so that the core pulling rod 261 moves along the core pulling direction, the core pulling rod 261 is demolded again, as shown in fig. 13, after the core pulling rod 261 is successfully demolded, the core pulling rod 261 extends out, and the core pulling rod 261 moves along with the inclined ejector 24.
Therefore, the first inclined guide hole 243 is arranged to cooperate with the core rod 261 to guide the movement of the core rod 261, and provide an inclined acting force to the core rod 261 to convert the movement of the inclined top 24 into the core-pulling movement of the core rod 261, and when the core rod 261 is not successfully released in the mold opening process, the core rod 261 is released again.
As shown in fig. 9 and 10, the plunger 261 includes a plunger body 264 and a core; one end of the core pulling rod body 264 is connected with the first elastic piece 262, and the mold core is arranged at one end; the core-pulling direction of the mold core and the second linear direction form an included angle.
It should be noted that the coring bar 261 includes a first mold core 266 and a second mold core 265; the core pulling rod body 264 is configured to drive the first mold core 266 to move along a first core pulling direction, where the first core pulling direction (e.g., a Z-axis direction in fig. 13) and the second linear direction form an included angle; the second mold core 265 is disposed on the core pulling rod body 264, and the core pulling rod body 264 is further configured to drive the second mold core 265 to move along a second core pulling direction (X-axis direction in fig. 13), where the second core pulling direction and the second linear direction form an included angle. Here, the first mold core 266 may be directly disposed on the plunger body 264, or may be disposed on the plunger body 264 by being disposed on the second mold core 265. Before the mould opening, first mold core 266 is located in barb 12, in the mould opening process, when core pulling rod 261 is the drawing of patterns unsuccessful under the thrust of spring, after the mould opening, drive arrangement 4 drives oblique top 24 is ejecting motion along first linear direction, and at this moment, first oblique guide hole 243 can give core pulling rod 261 an oblique effort, and because first core pulling direction with second linear direction is an contained angle setting, the second core pulling direction with second linear direction is an contained angle setting, consequently, first mold core 266 is in first core pulling direction has the motion trend, thereby realizes first mold core 266 is in the drawing of patterns motion of first core pulling direction breaks away from barb 12. Since the spring is in a compressed state, when the first mold core 266 is successfully demolded in the first core pulling direction, the compression spring ejects the core pulling rod body 264, so that the second mold core 265 is demolded in the second core pulling direction. The core pulling direction of the mold core and the core pulling rod 261 are arranged in an inclined mode, so that the mold core can be conveniently demolded in multiple directions.
As shown in fig. 11 and 12, the core pulling mechanism further includes a push rod 251, a first guide hole 241 is disposed in the lifter 24, a guide groove 71 is disposed on the movable mold, the push rod 251 is inserted into the first guide hole 241, and when the mold is closed, one end of the push rod 251 close to the movable mold is accommodated in the guide groove 71; the push rod 251 is slidably connected to the first guide hole 241 along a fifth linear direction, which is inclined with respect to the first linear direction.
It should be noted that, because the lifter 24 is slidably connected to the movable mold along a first linear direction, a guide end surface matched with the lifter 24 is provided on the movable mold, the lifter 24 slides along the guide end surface, the guide groove 71 is equivalently provided on the guide end surface, the guide groove 71 is provided with a guide surface along the first linear direction, and the push rod 251 is in contact with the guide surface. When the driving device 4 drives the inclined top 24 to move along the first linear direction, the inclined top 24 drives the push rod 251 to move along the first linear direction, and because the push rod 251 is located in the guide groove 71, when the push rod 251 moves along the first linear direction, the push rod 251 moves along the guide groove 71 until the push rod 251 slides out of the guide groove 71. In the process, the push rod 251 moves along the fifth linear direction (the X-axis direction in fig. 12) until the push rod 251 extends out of the other end of the first guide hole 241, and the product is ejected.
This has the advantage that the product is ejected in the fifth linear direction by the cooperation of the push rod 251 and the guide groove 71 during the ejection of the slanted ejecting part 24 driven by the driving device 4.
As shown in fig. 11 and 12, the core pulling mechanism further includes a second elastic member 252, the second elastic member 252 is in a compressed state, and the second elastic member 252 is used for pushing the push rod 251 to approach the movable mold. It should be noted that the second elastic member 252 may be a spring or other elastic material. In this embodiment, a compression spring is taken as an example, the push rod 251 is provided with an abutting portion 253, in one embodiment of the present invention, one end of the compression spring is in contact with the abutting portion 253, one end of the compression spring is in contact with the inclined roof 24, and the compression spring pushes the push rod 251 to be in contact with the movable mold through the abutting portion 253. In one embodiment of the present invention, both ends of the compression spring are connected to the abutting portion 253 and the lifter 24, respectively. This arrangement is advantageous in that the push rod 251 is urged into contact with the movable mold by the arrangement of the compression spring member, so that the push rod 251 is returned to the guide groove 71 during mold clamping.
As shown in fig. 11 and 12, a receiving groove 242 is formed on the inclined top 24, and the second elastic element 252 is received in the receiving groove 242. Taking a compression spring as an example, the compression spring is coaxial with the push rod 251, the accommodating groove 242 is disposed on the sidewall of the first guiding hole 241, one end of the compression spring is in contact with the abutting portion 253, and the other end of the compression spring is in contact with the accommodating groove 242. Therefore, the second elastic member 252 is protected by the accommodating groove 242, and the accommodating groove 242 is formed in the side wall of the first guide hole 241, so that the space is fully utilized and the volume of the slanted top 24 is reduced.
Due to the inclined arrangement of the inclined guide rod 21, the inclined guide rod 21 is easily damaged by force. As shown in fig. 7 to 9, the core pulling mechanism further includes a guide rod 23, the guide rod 23 is vertically disposed, one end of the guide rod 23 is connected to the driving device 4, and the other end of the guide rod 23 is in contact with the lifter 24, the movable die is provided with a second guide hole, and the guide rod 23 is slidably connected to the second guide hole. It should be noted that both ends of the guide rod 23 are respectively connected to the lifter 24 and the mounting plate 41 of the driving device 4, and when the driving element drives the mounting plate 41 to move upward along the Y axis, the guide rod 23 and the mounting plate 41 move in the same direction. Therefore, when the inclined top 24 ejects a product, the stress of the inclined guide rod 21 can be reduced through the contact between the guide rod 23 and the inclined top 24.
Here, the core pulling mechanism further comprises a guide block 27, the guide block 27 is mounted on the movable die, a plurality of avoiding holes are formed in the guide block 27, and the positions of the avoiding holes correspond to the positions of the second inclined guide hole and the second guide hole respectively. The radial displacement of the angle guides 21 or the guide rods 23 is limited by the arrangement of the guide blocks 27.
Generally, the slanted top 24 is easily heated and scalded when the slanted top 24 is continuously reciprocated. As shown in fig. 7 to 9, a circulation water path for cooling the pitched roof 24 is provided in the pitched roof 24. The circulation water path is generally provided with an outlet and an inlet, and water is supplied from the inlet and discharged from the outlet, and cooling water is introduced into the circulation water path to cool the pitched roof 24.
As shown in fig. 7 to 9, the core pulling mechanism further includes at least two water connectors 28, the inclined guide rods 21 are hollow rods, the inclined guide rods 21 are communicated with the circulating water circuit, and there are two inclined guide rods 21; one end of the inclined guide rod 21, which is far away from the inclined top 24, is communicated with the water joint 28. It should be noted that the two hollow rods are respectively communicated with the inlet and the outlet of the circulating water path, wherein the two water connectors 28 are respectively connected with the lower ends of the two hollow rods, one of the water connectors is a water inlet, and the other water connector is a water outlet, and cooling water is introduced into the water inlet and is recovered from the water outlet. The advantage of this arrangement is that the cooling of the whole moving part of the core pulling mechanism is realized by arranging the inclined guide rod 21 to be hollow and communicating the hollow rod with the circulating water path.
Another embodiment of the present invention provides an injection mold including any one of the above core-pulling mechanisms. The beneficial effects of the injection mold are the same as those of the core-pulling mechanism, and are not described again here.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. The core pulling mechanism is characterized by comprising a driving device (4), an inclined top (24) and a core pulling assembly (26); the driving device (4) is used for driving the inclined top (24) to move along a first linear direction; the core pulling assembly (26) comprises a first elastic piece (262) and a core pulling rod (261), the first elastic piece (262) is respectively connected with the inclined top (24) and the core pulling rod (261), and the core pulling rod (261) is connected with the inclined top (24) in a sliding mode along a second linear direction; when the mold is closed, the first elastic member (262) is in a compressed state, and the expansion and contraction direction of the first elastic member (262) is the same as the second linear direction.
2. The core pulling mechanism according to claim 1, further comprising a movable die and a slant guide rod (21), wherein a second slant guide hole (31) is formed in the movable die, the slant guide rod (21) is slidably connected with the second slant guide hole (31) along the first linear direction, two axial ends of the slant guide rod (21) are respectively connected with the slant top (24) and the driving device (4), and the driving device (4) is used for driving the slant guide rod (21) to move along the first linear direction.
3. The core pulling mechanism according to claim 2, wherein the driving device (4) comprises a driving member and a mounting plate (41), the mounting plate (41) is provided with a sliding slot (42), one end of the inclined guide rod (21) close to the mounting plate (41) is slidably connected with the sliding slot (42) along a third linear direction, the driving member is used for driving the mounting plate (41) to move along a fourth linear direction, and the first linear direction is obliquely arranged relative to the third linear direction and the fourth linear direction respectively.
4. The core pulling mechanism according to claim 3, wherein said driving means further comprises a universal base (22), said universal base (22) being slidably connected to said runner (42) in a third linear direction, and one end of said inclined guide rod (21) adjacent to said mounting plate (41) being rotatably connected to said universal base (22).
5. The core pulling mechanism according to claim 1, wherein a first slanted guide hole (243) is provided in the slanted roof (24), the core pulling rod (261) is at least partially received in the first slanted guide hole (243), and the core pulling rod (261) is slidably connected to the first slanted guide hole (243) along a second linear direction, which is disposed at an angle to the first linear direction.
6. The core pulling mechanism as claimed in claim 5, wherein the core pulling bar (261) comprises a core pulling bar body (264) and a mold core; one end of the core pulling rod body (264) is connected with the first elastic piece (262), and the mold core is arranged at one end of the core pulling rod body; the core-pulling direction of the mold core and the second linear direction form an included angle.
7. The core pulling mechanism according to claim 2, further comprising a push rod (251), wherein a first guide hole (241) is formed in the slanted ejecting part (24), a guide groove (71) is formed in the movable die, and the push rod (251) is inserted into the first guide hole (241); when the die is closed, one end of the push rod (251) close to the movable die is accommodated in the guide groove (71); the push rod (251) is connected with the first guide hole (241) in a sliding mode along a fifth linear direction, and the fifth linear direction is arranged obliquely relative to the first linear direction.
8. The core pulling mechanism according to claim 7, further comprising a second elastic member (252), said second elastic member (252) being in a compressed state, said second elastic member (252) being for urging said push rod (251) toward said movable mold.
9. The core pulling mechanism according to claim 8, wherein the slanted top (24) is formed with a receiving groove (242), the receiving groove (242) is located at a sidewall of the first guiding hole (241), and the second elastic member (252) is received in the receiving groove (242).
10. The core pulling mechanism according to claim 2, further comprising a guide rod (23), wherein the guide rod (23) is vertically arranged, two ends of the guide rod (23) are respectively connected with the inclined top (24) and the driving device (4), the movable die is provided with a second guide hole, and the guide rod (23) is slidably connected with the second guide hole.
11. Core pulling mechanism according to claim 2, characterized in that a circulation water circuit is provided in the slanted roof (24) for cooling of the slanted roof (24).
12. The core pulling mechanism according to claim 11, further comprising at least two water connectors (28), wherein the inclined guide rods (21) are hollow rods, the inclined guide rods (21) are communicated with the circulating water circuit, and two inclined guide rods (21) are provided; one end of the inclined guide rod (21) far away from the inclined top (24) is communicated with the water joint (28).
13. An injection mould comprising a core-pulling mechanism as claimed in any one of claims 1 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911391174.4A CN111002540A (en) | 2019-12-30 | 2019-12-30 | Core pulling mechanism and injection mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911391174.4A CN111002540A (en) | 2019-12-30 | 2019-12-30 | Core pulling mechanism and injection mold |
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| CN111002540A true CN111002540A (en) | 2020-04-14 |
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| CN201911391174.4A Pending CN111002540A (en) | 2019-12-30 | 2019-12-30 | Core pulling mechanism and injection mold |
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| JP2015208872A (en) * | 2014-04-24 | 2015-11-24 | 株式会社 タカオ設計事務所 | Ejector device and molding die |
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