CN110667051B - Core pulling and tripping device and mold with same - Google Patents
Core pulling and tripping device and mold with same Download PDFInfo
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- CN110667051B CN110667051B CN201910983154.XA CN201910983154A CN110667051B CN 110667051 B CN110667051 B CN 110667051B CN 201910983154 A CN201910983154 A CN 201910983154A CN 110667051 B CN110667051 B CN 110667051B
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- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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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
- B29C2045/338—Mould parts with combined axial and transversal movements
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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 discloses a core-pulling release device and a mold with the same, wherein the core-pulling release device can be arranged in a cavity formed between a movable mold core and a fixed mold core to release a product in the cavity, the product is provided with a clamping groove extending along the thickness direction of the product, and the core-pulling release device comprises: the top block is provided with an installation channel; the reset part is sequentially provided with a first molded surface and a second molded surface from bottom to top at one end of the reset part facing the direction of the top block; and the movable part penetrates through the other open end of the installation channel and is inserted into the clamping groove when the movable part is positioned at the forming position, the other end of the movable part is abutted against the first molded surface, when the movable part is positioned at the releasing position, one end of the movable part is separated from the clamping groove, the other end of the movable part is abutted against the second molded surface, and when the relative movement occurs between the ejector block and the resetting part, the movable part moves from the forming position to the releasing position so as to release the formed product. The core-pulling tripping device can complete effective tripping and reliable ejection.
Description
Technical Field
The invention belongs to the technical field of dies, and particularly relates to a core-pulling tripping device and a die with the same.
Background
For the molding of the buckling holes of the injection molding modules, core-pulling structures such as a sliding block, an inclined top and the like are often adopted. When the inner side back-off of the product is processed, more inclined tops are selected in the design process in consideration of space limitation and processing difficulty, and the double-action of ejection and back-off is realized, so that the structure is compact, the occupied space is small, and meanwhile. The principle is that a certain displacement in the horizontal direction is obtained through ejection movement in the oblique line direction of the oblique ejector rod, so that the purpose of demoulding the product by reversely buckling is achieved. In the actual production process, shrinkage internal stress is generated on the glue position surface of the inclined ejection in the cooling and forming process of the plastic part, and the product can adhere to the inclined ejection to follow movement when the packing force is too large, so that the product is scratched or even deformed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the invention provides a core-pulling tripping device which can realize effective tripping and reliable ejection.
The invention also provides a die which has the advantages of improving the product quality, being convenient to operate and the like.
According to an embodiment of the present invention, a core-pulling and releasing device is capable of being disposed in a cavity formed between a movable mold core and a fixed mold core to release a product in the cavity, the product being provided with a clamping groove extending along a thickness direction thereof, the core-pulling and releasing device comprising: the top block is positioned between the movable die core and the fixed die core and is arranged on one side of the die cavity, and is provided with an installation channel with two open ends, wherein the two ends extend towards the direction of the die cavity; the reset part is positioned between the movable die core and the fixed die core and is arranged on one side of the top block, which is opposite to the die cavity, the reset part is opposite to an open end of the mounting channel, a first molded surface and a second molded surface are sequentially arranged at one end of the reset part, which faces to the direction of the top block, from bottom to top, and the distance between the first molded surface and the open end of the mounting channel is smaller than the distance between the second molded surface and the open end of the mounting channel; the movable part is arranged in the mounting channel and can move between a forming position and a tripping position along the axial direction of the mounting channel, when the movable part is positioned in the forming position, at least one part of one end of the movable part penetrates through the other open end of the mounting channel and is inserted into the clamping groove, the other end of the movable part is abutted against the first molded surface, when the movable part is positioned in the tripping position, one end of the movable part is separated from the clamping groove, the other end of the movable part is abutted against the second molded surface, and when the relative movement occurs between the ejector block and the resetting part, the movable part moves from the forming position to the tripping position so as to trip a formed product.
According to the core pulling tripping device provided by the embodiment of the invention, the ejector block, the reset part and the movable part are combined, so that the core pulling tripping device can realize the effective tripping and reliable ejection process, the production and processing efficiency can be improved, and the product quality can be improved.
According to one embodiment of the invention, one end of the ejector block, which is opposite to the direction of the fixed die core, is connected with the ejector rod so as to be driven by the ejector rod to move towards or away from the direction of the fixed die core.
According to one embodiment of the present invention, the first profile is a straight profile extending along a vertical direction, the second profile is an inclined profile extending obliquely with respect to the vertical direction, and one end of the reset portion facing the direction in which the top block is located is further provided with: the transition surface is located between the first molded surface and the second molded surface, the lower end of the transition surface is connected with the first molded surface, the upper end of the transition surface is connected with the second molded surface, and the transition surface is an inclined surface or an arc surface.
According to one embodiment of the invention, the clamping groove is a through groove extending along the thickness direction of the product.
According to one embodiment of the invention, the mounting channel comprises in its axial direction: one end of the first section body is communicated with the cavity; one end of the second section body is communicated with the other end of the first section body, the other end of the second section body is arranged opposite to the reset part, and the inner diameter of the second section body is larger than that of the first section body; the movable portion includes: the movable part body is formed into a cylindrical piece, is arranged in the mounting channel and extends along the axial direction of the mounting channel, one end of the movable part body is matched with the clamping groove, and the other end of the movable part body is matched with the reset part; the stop block is arranged on the second section body and is positioned on the outer peripheral surface of the movable part body; the elastic piece is arranged on the second section body and is positioned on one side of the stop block, which is close to the direction in which the first section body is positioned, and when the movable part is positioned at the forming position, the elastic piece is in a compressed state; the core pulling tripping device further comprises: and the limiting part is positioned on one side of the stop block close to the reset part and used for limiting the position of the stop block in the second section body.
According to one embodiment of the present invention, the end surface of the other end of the movable portion body is an arc surface curved toward the direction in which the reset portion is located.
According to one embodiment of the invention, the limiting part is connected with the top block and is positioned at the other end of the second section body.
According to one embodiment of the invention, the stop block is annularly arranged on the outer circumferential surface of the movable part body, and the outer circumferential surface of the stop block is provided with a rotation stopping surface so as to limit the position of the movable part body along the circumferential direction.
According to one embodiment of the invention, the ejector block is an inclined ejector block, and the ejector rod is an inclined ejector rod.
The die according to the embodiment of the second aspect of the invention comprises any core pulling and tripping device.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a sectional view of a core back trip device according to an embodiment of the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
fig. 3 is a schematic view of a partial structure of a core pulling and tripping device according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
FIG. 5 is a partial perspective view of a core back trip device according to an embodiment of the present invention;
FIG. 6 is a partial perspective view of a stop of a core back trip device mated with a limit stop according to an embodiment of the present invention; .
Reference numerals:
core-pulling trip device 100;
A top block 10; a mounting channel 11; a first segment 12; a second segment 13; a third segment 14;
a reset unit 20; a first profile 21; a second profile 22; a transition surface 23;
A movable portion 30; a molding position 31; trip position 32; a movable portion body 33; a stopper 34; an elastic member 35;
A limit part 40; a jack 50; a guide sleeve 60; a clamp spring 61; an inclined top seat 62;
A movable mold core 200; a fixed mold core 300;
Product 400; a card slot 401.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The core back trip device 100 according to the embodiment of the present invention is specifically described below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the core back trip device 100 according to the embodiment of the present invention can be disposed in a cavity formed between a movable mold core 200 and a fixed mold core 300 to trip a product 400 in the cavity, the product 400 being provided with a clamping groove 401 extending in a thickness direction thereof, the core back trip device 100 comprising: top block 10, reset portion 20 and movable portion 30.
Specifically, the top block 10 is located between the movable mold core 200 and the fixed mold core 300 and is arranged at one side of the cavity, the top block 10 is provided with an installation channel 11 with two open ends extending towards the direction of the cavity, the reset part 20 is located between the movable mold core 200 and the fixed mold core 300 and is arranged at one side of the top block 10 opposite to the cavity, the reset part 20 is opposite to one open end of the installation channel 11, one end of the reset part 20 towards the direction of the top block 10 is sequentially provided with a first molded surface 21 and a second molded surface 22 from bottom to top, the distance between the first molded surface 21 and one open end of the installation channel 11 is smaller than the distance between the second molded surface 22 and one open end of the installation channel 11, the movable portion 30 is disposed in the mounting channel 11 and is movable along an axial direction of the mounting channel 11 between a molding position 31 and a releasing position 32, when the movable portion 30 is disposed in the molding position 31, at least a portion of one end of the movable portion 30 passes through the other open end of the mounting channel 11 and is inserted into the clamping groove 401, the other end of the movable portion 30 is stopped against the first molded surface 21, when the movable portion 30 is disposed in the releasing position 32, one end of the movable portion 30 is disengaged from the clamping groove 401, the other end of the movable portion 30 is stopped against the second molded surface 22, and when a relative movement occurs between the top block 10 and the reset portion 20, the movable portion 30 moves from the molding position 31 to the releasing position 32 to release the molded product 400.
In other words, the core-pulling and releasing device 100 according to the embodiment of the present invention mainly comprises the top block 10, the reset portion 20 and the movable portion 30, the movable mold insert 200 is disposed opposite to the fixed mold insert 300, and a cavity is defined between the movable mold insert 200 and the fixed mold insert 300, through which the product 400 can be produced. A top block 10 is arranged between the movable mold core 200 and the fixed mold core 300, the top block 10 is arranged on one side of the mold cavity, when the product 400 needs to be tripped, the top block 10 can be driven to move towards the direction of the mold cavity, and the trip of the clamping groove 401 can be realized while the top block 10 moves. The top block 10 is provided with a mounting channel 11 extending towards the direction of the cavity, two ends of the mounting channel 11 are open, a reset part 20 is arranged between the movable mold insert 200 and the fixed mold insert 300, the reset part 20 can be arranged on one side of the top block 11, which is opposite to the cavity, one open end of the mounting channel 11 is opened towards the direction of the reset part 20, and the other open end of the mounting channel 11 is opened towards the direction of the product 400. The reset portion 20 is provided with a first molding surface 21 and a second molding surface 22 at one end of the top block 10 facing the direction, wherein the first molding surface 21 and the second molding surface 22 are sequentially arranged from bottom to top along the up-down direction. Wherein the second profile 22 is located above the first profile 21, the distance between the second profile 22 and an open end of the mounting channel 11 being greater than the distance between the first profile 21 and an open end of the mounting channel 11. A movable part 30 is arranged in the mounting channel 11, the movable part 30 can move along the axial direction of the mounting channel 11 and can move between a forming position 31 and a releasing position 32, wherein one end of the movable part 30 extends towards the direction of the product 400, and the other end of the movable part 30 extends towards the direction of the resetting part 20. When the movable portion 30 is located at the molding position 31, at least a part of one end of the movable portion 30 can protrude out of the mounting passage 11 and can be fitted to the molding surface at the time of molding, producing a product 400 having a card slot 401, the card slot 401 extending in the thickness direction of the product 400. At this time, the other end of the movable portion 30 can be stopped against the first profile 21, and the position of the movable portion 30 can be defined by the first profile 21. After the molding is finished, when the product is required to be taken out by opening the mold, the product is required to be tripped. At this time, the movable portion 30 moves to the releasing position 32, at this time, one end of the movable portion 30 is withdrawn from the clamping groove 401, and the other end of the movable portion 30 is stopped against the second molding surface 22, that is, after the molding is completed, the relative movement between the top block 10 and the reset portion 20 occurs, and the other end of the movable portion 30 can be stopped against the second molding surface 22 from the first molding surface 21, and since the whole length of the movable portion 30 is fixed, the other end of the movable portion 30 moves rightward, and one end of the movable portion 30 is separated from the clamping groove 401, thereby achieving the purpose of releasing the molded product 400.
Thus, the core pulling and releasing device 100 according to the embodiment of the present invention adopts a device combining the ejector block 10, the reset portion 20 and the movable portion 30, so that it can implement an effective releasing and reliable ejecting process.
According to one embodiment of the present invention, one end of the ejector block 10 facing away from the fixed mold core 300 is connected to the ejector rod 50 of the mold so as to be driven by the ejector rod to move toward or away from the fixed mold core 300, and when the release operation is required, the ejector rod 50 ejects the ejector block 10 upwards, and one end of the ejector rod 50 can penetrate through the movable mold to extend into the cavity. During ejection, the clip position is prevented from laterally displacing the ejector pin 50. The ejector 50 may be an oblique ejector or other ejector structures capable of ejecting.
It should be noted that, the split structure is adopted between the top block 10 and the top rod 50, which is convenient for processing and easy for repairing.
In some embodiments of the present invention, as shown in fig. 1,2 and 4, the first profile 21 is a straight profile extending in a vertical direction, the second profile 22 is an inclined profile extending obliquely with respect to the vertical direction, one end of the reset portion 20 facing the direction of the top block 10 is further provided with a transition surface 23, the transition surface 23 is located between the first profile 21 and the second profile 22, a lower end of the transition surface 23 is connected to the first profile 21, an upper end of the transition surface 23 is connected to the second profile 22, and the transition surface 23 is an inclined surface or an arc surface.
According to an embodiment of the present invention, the clamping groove 401 is a through groove extending along the thickness direction of the product 400, and one end of the movable portion 30 may be matched with the cavity during molding.
In some embodiments of the invention, the mounting channel 11 comprises in its axial direction: the first section body 12 and the second section body 13, one end of the first section body 12 is communicated with the cavity, one end of the second section body 13 is communicated with the other end of the first section body 12, the other end of the second section body 13 is arranged opposite to the reset part 20, and the inner diameter of the second section body 13 is larger than that of the first section body 12; the movable part 30 comprises a movable part body 33 and a stop block 34, the movable part body 33 is formed into a cylindrical member, the movable part body 33 is arranged in the mounting channel 11 and extends along the axial direction of the mounting channel, one end of the movable part body 33 is matched with the clamping groove 401, the other end of the movable part body 33 is matched with the resetting part 20, the stop block 34 is arranged on the second section 13 and is positioned on the outer peripheral surface of the movable part body 33, the elastic member 35 is arranged on the second section 13 and is positioned on one side of the stop block 34, which is close to the direction of the first section 12, and when the movable part 30 is positioned at the forming position 31, the elastic member 35 is in a compressed state.
In some embodiments of the present invention, the mounting channel 11 further includes a third segment 14 along the axial direction thereof, one end of the third segment 14 is communicated with the other end of the second segment 13, the other end of the third segment 14 is opposite to the reset portion 20, the radial dimension of the third segment 14 may be greater than the radial dimension of the second segment 13, the stopper 34 may be located in the third segment 14, and the stopper 34 may be movable along the axial direction of the third segment 14, so that the state of the elastic member 35 may be adjusted.
According to one embodiment of the invention, the first segment 12, the second segment 13 and the third segment 14 are coaxially arranged.
Alternatively, the elastic member 35 may be formed as a spring. The spring is generally sized under a suitable load depending on the driving force and travel required, and the total length of the movable portion 30 may be determined by the spring. The diameter of the molding section at one end of the movable part body 33 is minimum to cover the back-off surface.
According to an embodiment of the present invention, the core back trip device 100 further includes a limiting portion 40, where the limiting portion 40 is located on a side of the stopper 34 near the reset portion 20 for limiting a position of the stopper 34 in the second segment 13. The outer peripheral surface of the movable part body 33 is required to be provided with a stop block 34 for bearing the elastic force of the spring and limiting the movable part body at the limiting part 40 under the pushing action of the spring, and the limiting part 40 can limit the stop block 34 to continuously retract after the trip is completed.
Wherein, an open mounting groove can be arranged at one end of the top block 10 facing the reset portion 20, the bottom wall of the mounting groove can be communicated with the mounting channel 11, and a stop block 34 can be arranged at the open end of the mounting groove.
Further, the end surface of the other end of the movable portion body 33 is an arc surface curved in the direction of the reset portion 20, and can be matched with the transition surface 23 of the reset portion 30 for resetting. The angle of the transition surface can be larger than the inclination of the inclined ejector rod, so that the reset part 30 and the movable part 30 are prevented from interfering with each other after the inclined ejector rod is retracted, and the inclined ejector rod cannot be reset.
Alternatively, the limiting portion 40 is connected to the top block 10 and located at the other end of the second segment 13.
According to an embodiment of the present invention, the stopper 34 is disposed around the outer peripheral surface of the movable portion body 33, and the outer peripheral surface of the stopper 34 is provided with a rotation stopping surface to limit the position of the movable portion body 33 along the circumferential direction.
In some embodiments of the present invention, the ejector pad 10 is an angled ejector pad and the ejector 50 is an angled ejector pad.
The core back trip device 100 according to the embodiment of the present invention will be specifically described with reference to the following embodiments.
Example 1
Firstly, adding a safety margin according to the back-off quantity of the buckling position, calculating the required core pulling quantity, combining the ejection stroke of the die, calculating the angle of the inclined ejector rod according to a trigonometric function formula, and then determining the finally required reasonable inclination according to the range according to the design experience of the inclined ejector rod angle design, which is generally below 12 degrees.
The oblique jacking adopts split type, can mainly comprise shaping oblique kicking block and oblique ejector pin, and easy repair is also in its processing of being convenient for, and the space of oblique kicking block needs to satisfy the mobile part 30 of inlaying, so the size need reasonable in design can be fixed on oblique ejector pin through the pin. A guide sleeve 60 can be arranged between the movable die core 200 and the peripheral surface of the inclined ejector rod, the inclined ejector rod can be matched with the guide sleeve 60, and the inclined ejector rod is fixed in the movable die core 200 in a nested manner through a clamp spring 61, so that smooth ejection of the inclined ejector rod is ensured, and meanwhile, the inclined ejector rod is convenient to assemble. The tail of the inclined ejector rod is locked on the sliding groove of the inclined ejector seat 62 by a screw, and a standard inclined ejector seat 62 can be used so as to improve the stability and interchangeability of the device.
When the oblique ejection is performed, the movable part 30 is ejected out of the back-off position by the transverse displacement in the oblique movement of the oblique ejection, the tail part is directly against the broken surface (the first molded surface 21) by virtue of the reset part 20, and after the designed ejection distance of the die is opened, the movable part 30 and the oblique ejection are thoroughly separated from the product.
After the mold is opened, the movable part 30 is retracted to the limiting part 40 under the action of the spring, and when the mold is closed again, the movable part body 33 needs to return to the sealing position and compress the spring.
The following specifically describes a specific core pulling process of the core pulling trip device 100 according to an embodiment of the present invention.
After the movable mold core 200 and the fixed mold core 300 are assembled, the mechanism is reset, after the injection molding, cooling, forming and pressure maintaining of the plastic part are completed, the mold is opened from the parting surface, an ejector rod of the injection molding machine acts on a mold ejector plate, and the inclined ejector seat 62 drives the inclined ejector rod to perform oblique line movement along the fixing direction of the guide sleeve 60.
The ejection of the oblique ejector block fixed on the oblique ejector rod is started, and meanwhile, under the double functions of the transverse displacement of the oblique ejector and the straight body leaning broken section of the reset part 30, the movable part 30 is ejected out to be separated from the back-off glue position surface, so that the packing force of the buckle on the oblique ejector block is removed. The spring in the compressed state pushes the movable portion 30 to move backward, and as shown in fig. 6, the stopper 34 abuts against the limiting portion 40, and then the movable portion 30 moves backward to stop.
And the ejection stroke of the inclined ejector is finished, and the inclined ejector and the movable part 30 are completely separated from the product. After the die is closed, the other end of the movable part 30 can be reset through the transition surface 23 of the reset part 30, the spring is compressed until the other end of the movable part 30 moves to the straight surface, and meanwhile, the whole reset is completed by the inclined top, so that the plastic part can be subjected to repeated injection molding, cooling, forming and pressure maintaining processes again.
In summary, according to the core pulling and releasing device 100 in the embodiment of the invention, the reset reliability can be ensured while the ejection is stably and smoothly separated from the back-off, the problem that the plastic part sticks to the inclined top is effectively avoided, the split structure and the standard part are used for facilitating the assembly and maintenance of the mold, the mold structure is reasonable and compact, the mechanism operation process is safe and reliable, and the delivered product meets the quality requirement.
The mold according to the second aspect of the present invention includes the core back trip device 100 according to the above embodiment, and since the core back trip device 100 according to the embodiment of the present invention has the above technical effects, the mold according to the embodiment of the present invention also has corresponding technical effects, that is, can effectively improve the structural rationality and improve the product quality.
Other structures and operations of the mold according to embodiments of the present invention will be understood and readily implemented by those skilled in the art, and thus will not be described in detail.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a release of loosing core, can establish in the die cavity that forms between movable mould benevolence and cover half benevolence in order to take off the product in the die cavity, the product is equipped with the draw-in groove that extends along its thickness direction, its characterized in that, release of loosing core includes:
the top block is positioned between the movable die core and the fixed die core and is arranged on one side of the die cavity, and is provided with an installation channel with two open ends, wherein the two ends extend towards the direction of the die cavity;
The reset part is positioned between the movable die core and the fixed die core and is arranged on one side of the top block, which is opposite to the die cavity, the reset part is opposite to an open end of the mounting channel, a first molded surface and a second molded surface are sequentially arranged at one end of the reset part, which faces to the direction of the top block, from bottom to top, and the distance between the first molded surface and the open end of the mounting channel is smaller than the distance between the second molded surface and the open end of the mounting channel;
The movable part is arranged in the mounting channel and can move between a forming position and a tripping position along the axial direction of the mounting channel, when the movable part is positioned in the forming position, at least one part of one end of the movable part passes through the other open end of the mounting channel and is inserted into the clamping groove, the other end of the movable part is in stopping contact with the first molded surface, when the movable part is positioned in the tripping position, one end of the movable part is separated from the clamping groove, the other end of the movable part is in stopping contact with the second molded surface, and when the relative movement occurs between the top block and the resetting part, the movable part moves from the forming position to the tripping position so as to trip a formed product;
the mounting channel includes in its axial direction:
One end of the first section body is communicated with the cavity;
One end of the second section body is communicated with the other end of the first section body, the other end of the second section body is arranged opposite to the reset part, and the inner diameter of the second section body is larger than that of the first section body;
The movable portion includes:
The movable part body is formed into a cylindrical piece, is arranged in the mounting channel and extends along the axial direction of the mounting channel, one end of the movable part body is matched with the clamping groove, and the other end of the movable part body is matched with the reset part;
The stop block is arranged on the second section body and is positioned on the outer peripheral surface of the movable part body; the elastic piece is arranged on the second section body and is positioned on one side of the stop block, which is close to the direction in which the first section body is positioned, and when the movable part is positioned at the forming position, the elastic piece is in a compressed state;
The core pulling tripping device further comprises:
And the limiting part is positioned on one side of the stop block close to the reset part and used for limiting the position of the stop block in the second section body.
2. The core pulling and tripping device according to claim 1, wherein one end of the ejector block facing away from the direction of the fixed die core is connected with the ejector rod so as to be driven by the ejector rod to move towards or away from the direction of the fixed die core.
3. The core pulling trip device according to claim 1, wherein the first profile is a straight profile extending in a vertical direction, the second profile is an inclined profile extending obliquely with respect to the vertical direction, and one end of the reset portion facing the direction in which the top block is located is further provided with:
The transition surface is located between the first molded surface and the second molded surface, the lower end of the transition surface is connected with the first molded surface, the upper end of the transition surface is connected with the second molded surface, and the transition surface is an inclined surface or an arc surface.
4. The trip unit according to claim 1, wherein the clamping groove is a through groove extending in a thickness direction of the product.
5. The core pulling trip device according to claim 1, wherein the end face of the other end of the movable portion body is an arc face curved toward the direction in which the reset portion is located.
6. The core pulling trip device according to claim 1, wherein the limiting portion is connected with the top block and located at the other end of the second segment body.
7. The core pulling trip device according to claim 1, wherein the stopper is annularly arranged on the outer peripheral surface of the movable portion body, and the outer peripheral surface of the stopper is provided with a rotation stopping surface to limit the position of the movable portion body in the circumferential direction.
8. The core pulling trip device according to claim 2, wherein the ejector block is an inclined ejector block and the ejector rod is an inclined ejector rod.
9. A mold, comprising the core pulling and releasing device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983154.XA CN110667051B (en) | 2019-10-16 | 2019-10-16 | Core pulling and tripping device and mold with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910983154.XA CN110667051B (en) | 2019-10-16 | 2019-10-16 | Core pulling and tripping device and mold with same |
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| CN110667051A CN110667051A (en) | 2020-01-10 |
| CN110667051B true CN110667051B (en) | 2024-05-07 |
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| CN102632592A (en) * | 2012-03-27 | 2012-08-15 | 宁波方正汽车模具有限公司 | Lateral inclined-knockout core-loosening device arranged in lateral sliding block |
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|---|---|
| CN110667051A (en) | 2020-01-10 |
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