CN110667051A - Core-pulling tripping device and mold with same - Google Patents
Core-pulling tripping device and mold with same Download PDFInfo
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- CN110667051A CN110667051A CN201910983154.XA CN201910983154A CN110667051A CN 110667051 A CN110667051 A CN 110667051A CN 201910983154 A CN201910983154 A CN 201910983154A CN 110667051 A CN110667051 A CN 110667051A
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- 238000009434 installation Methods 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000007493 shaping process Methods 0.000 abstract 3
- 238000000465 moulding Methods 0.000 description 19
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 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
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 238000007789 sealing Methods 0.000 description 1
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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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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a core-pulling tripping device and a mould with the same, wherein the core-pulling tripping device can be arranged in a cavity formed between a movable mould core and a fixed mould core to trip 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 tripping device comprises: the top block is provided with an installation channel; the resetting part is provided with a first molded surface and a second molded surface from bottom to top in sequence at one end of the resetting part facing to the direction of the top block; the movable part, when the movable part is located the shaping position, the other open end that at least a part of the one end of movable part passed the installation passageway is and is pegged graft to the draw-in groove, and the other end and the first profile of movable part end are supported, and when the movable part was located the dropout position, the one end of movable part broke away from with the draw-in groove, and the other end and the second profile of movable part end are supported, and when taking place relative motion between kicking block and the portion that resets, the movable part moved to the dropout position from the shaping position so that the shaping product is tripped. The core-pulling tripping device can complete effective tripping and reliable ejection.
Description
Technical Field
The invention belongs to the technical field of molds, and particularly relates to a core-pulling tripping device and a mold with the same.
Background
For the molding of the injection molding piece buckle hole, core-pulling structures such as a slide block and an inclined top are often adopted. When the product is processed with the inner side reverse buckle, the inclined top is selected more in the design process in consideration of space limitation and processing difficulty, the structure is compact, the occupied space is small, and the double functions of ejecting and disengaging from the reverse buckle are achieved. The principle of the method is that a certain displacement in the horizontal direction is obtained through the ejection motion of the oblique ejector rod in the oblique line direction, so that the purpose of reversely buckling and demoulding a product is achieved. In the actual production process, the plastic part generates shrinkage internal stress on the rubber position surface of the oblique top in the cooling and forming process, and the product can be adhered to the oblique top to move along with the oblique top due to overlarge wrapping force, so that the product is scratched or even deformed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of 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, facilitating the operation and the like.
According to the core-pulling tripping device of the embodiment of the first aspect of the invention, the core-pulling tripping device can be arranged in a cavity formed between a movable mold core and a fixed mold core to trip 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 tripping device comprises: the ejector block is positioned between the movable die core and the fixed die core and arranged on one side of the die cavity, and the ejector block is provided with an installation channel which extends towards the direction of the die cavity and is opened at two ends; the resetting part is positioned between the movable mold core and the fixed mold core and is arranged on one side, back to the cavity, of the ejector block, the resetting part is arranged opposite to one opened end of the mounting channel, one end, facing the direction of the ejector block, of the resetting part is sequentially provided with a first molded surface and a second molded surface from bottom to top, and the distance between the first molded surface and one opened end of the mounting channel is smaller than the distance between the second molded surface and one opened end of the mounting channel; the movable part is arranged on the installation channel and can move between a forming position and a tripping position along the axial direction of the installation channel, at least one part of one end of the movable part penetrates through the other open end of the installation channel and is inserted into the clamping groove, the other end of the movable part is abutted against the first molded surface, the movable part is positioned on 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 relative movement occurs between the top block and the resetting part, the movable part moves from the forming position to the tripping position so that the formed product is tripped.
According to the core-pulling tripping device provided by the embodiment of the invention, the top block, the reset part and the movable part are combined, so that the effective tripping and reliable ejection process can be realized, 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 back to the fixed mold core, is connected with the ejector rod so as to be driven by the ejector rod to move towards or back to the fixed mold core.
According to an embodiment of the present invention, the first mold surface is a straight mold surface extending along a vertical direction, the second mold surface is an inclined mold surface extending obliquely with respect to the vertical direction, and one end of the reset portion facing the top block 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-shaped surface.
According to one embodiment of the invention, the clamping groove is a through groove extending in 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 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 part, the movable part body is arranged in the installation channel and extends along the axial direction of the installation 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 resetting part; the stop block is arranged on the second section body and is positioned on the 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 close to the direction of the first section body, 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: the limiting part is positioned on one side, close to the reset block, of the stop block and used for limiting the position of the stop block in the second section of the body.
According to an embodiment of the present invention, an end surface of the other end of the movable portion body is an arc-shaped surface that is curved toward a direction in which the reset portion is located.
According to an embodiment of the invention, the limiting part is connected with the top block and is located at the other end of the second segment body.
According to one embodiment of the present invention, the stopper is provided around an outer circumferential surface of the movable portion body, and the outer circumferential surface of the stopper is provided with a rotation stop surface to define a position of the movable portion body in a 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 mold according to the second aspect of the embodiment of the present invention includes any one of the core back tripping devices described above.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a cross-sectional view of a core back trip device according to an embodiment of the invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
fig. 3 is a schematic partial structure diagram of a core back tripping device according to an embodiment of the 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 invention;
fig. 6 is a partial perspective view of the engagement between the stopper and the limiting portion of the core back trip device according to the embodiment of the invention; .
Reference numerals:
a 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 section 20; a first profile 21; a second profile 22; a transition surface 23;
a movable portion 30; a molding position 31; a trip position 32; a movable portion body 33; a stopper 34; an elastic member 35;
a stopper 40; a top rod 50; a guide sleeve 60; a clamp spring 61; a slanted top seat 62;
a movable die core 200; a cavity block 300;
a product 400; a card slot 401.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified 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 an integral connection; can be mechanically or electrically connected; 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.
The core back trip device 100 according to an embodiment of the present invention is described in detail below with reference to the drawings.
As shown in fig. 1 to 6, the core back tripping device 100 according to the embodiment of the present invention can be disposed in a cavity formed between a moving mold core 200 and a fixed mold core 300 to trip a product 400 in the cavity, the product 400 is provided with a clamping groove 401 extending along a thickness direction thereof, and the core back tripping device 100 includes: a top block 10, a reset portion 20 and a movable portion 30.
Specifically, the top block 10 is located between the moving core 200 and the fixed core 300 and is disposed 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 moving core 200 and the fixed core 300 and is disposed at one side of the top block 10 opposite to the cavity, the reset part 20 is disposed opposite to one open end of the installation channel 11, one end of the reset part 20 facing the direction of the top block 10 is sequentially provided with a first molding surface 21 and a second molding surface 22 from bottom to top, a distance between the first molding surface 21 and one open end of the installation channel 11 is smaller than a distance between the second molding surface 22 and one open end of the installation channel 11, the movable part 30 is disposed on the installation channel 11 and is movable between a forming position 31 and a tripping position 32 along the axial direction of the installation channel 11, when the movable part 30 is located at the forming position 31, at least a part of one end of the movable part 30 passes through the other open end of the installation channel 11, the other end of the movable portion 30 abuts against the first profile 21, when the movable portion 30 is located at the releasing position 32, one end of the movable portion 30 is separated from the engaging groove 401, and the other end of the movable portion 30 abuts against the second profile 22, and when the relative movement occurs between the top block 10 and the reset portion 20, the movable portion 30 moves from the forming position 31 to the releasing position 32, so that the formed product 400 is released.
In other words, the core-pulling trip device 100 according to the embodiment of the invention mainly comprises the ejector block 10, the reset portion 20 and the movable portion 30, the movable mold core 200 is arranged opposite to the fixed mold core 300, the movable mold core 200 and the fixed mold core 300 are mutually matched and define a cavity, and the product 400 can be produced through the cavity. The ejector block 10 is arranged between the moving die core 200 and the fixed die core 300, the ejector block 10 is arranged on one side of the die cavity, when the product 400 needs to be tripped, the ejector block 10 can be driven to move towards the direction of the die cavity, and the clamping groove 401 can be tripped while the ejector block 10 moves. The top block 10 is provided with an installation channel 11 extending towards the direction of the cavity, two ends of the installation channel 11 are opened, a reset block 30 is arranged between the movable mold core 200 and the fixed mold core 300, the reset block 30 can be arranged on one side of the top block 11 back to the cavity, one opened end of the installation channel 11 is opened towards the direction of the reset block 300, and the other opened end of the installation channel 11 is opened towards the direction of the product 400. One end of the reset part 20 facing the top block 10 is respectively provided with a first molded surface 21 and a second molded surface 22, wherein the first molded surface 21 and the second molded 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 and the distance between the second profile 22 and an open end of the mounting channel 11 is larger than the distance between the first profile 21 and an open end of the mounting channel 11. A movable portion 30 is disposed in the mounting channel 11, and the movable portion 30 is movable along the axial direction of the mounting channel 11 and is movable between a forming position 31 and a releasing position 32, wherein one end of the movable portion 30 extends toward the product 400, and the other end of the movable portion 30 extends toward the reset portion 20. When the movable part 30 is located at the molding position 31, at least a portion of one end of the movable part 30 can protrude out of the mounting channel 11 and can be matched with a molding surface during molding to produce a product 400 having a card slot 401, and the card slot 401 extends along the thickness direction of the product 400. At this time, the other end of the movable portion 30 can abut against the first mold surface 21, and the position of the movable portion 30 can be defined by the first mold surface 21. After the molding is finished, when the mold is opened to take out the product, the product needs to be tripped. At this time, the movable portion 30 moves to the trip position 32, at this time, one end of the movable portion 30 withdraws from the slot 401, the other end of the movable portion 30 abuts against the second molding surface 22, that is, after the molding is completed, the top block 10 and the reset portion 20 move relatively, the other end of the movable portion 30 can move from abutting against the first molding surface 21 to abutting against the second molding surface 22, and since the overall length of the movable portion 30 is fixed, one end of the movable portion 30 separates from the slot 401 along with the other end of the movable portion 30 moving to the right, thereby achieving the purpose of tripping the molded product 400.
Therefore, the core-pulling tripping device 100 according to the embodiment of the invention adopts a device combining the top block 10, the reset part 20 and the movable part 30, and can realize that the core-pulling tripping device can complete effective tripping and reliable ejection process.
According to an embodiment of the present invention, one end of the ejector block 10 facing away from the cavity 300 is connected to the ejector rod 50 of the mold to be driven by the ejector rod to move toward or away from the cavity 300, when a tripping operation is required, the ejector rod 50 ejects the ejector block 10 upward, and one end of the ejector rod 50 can penetrate through the movable mold and extend into the cavity. In the ejection process, the side displacement of the sticking ejector rod 50 at the buckling position can be prevented. The ejector rod 50 may be a slanted top or other ejector rod structure capable of ejecting.
It should be noted that, a split structure is adopted between the top block 10 and the top rod 50, which is convenient for processing and easy for repairing.
As shown in fig. 1, 2 and 4, in some embodiments of the present invention, the first mold surface 21 is a straight mold surface extending along a vertical direction, the second mold surface 22 is an inclined mold surface extending obliquely relative to the vertical direction, the reset portion 20 is further provided with a transition surface 23 at an end facing the top block 10, the transition surface 23 is located between the first mold surface 21 and the second mold surface 22, a lower end of the transition surface 23 is connected to the first mold surface 21, an upper end of the transition surface 23 is connected to the second mold surface 22, and the transition surface 23 is an inclined surface or an arc surface.
According to an embodiment of the present invention, the slot 401 is a through slot extending along the thickness direction of the product 400, and one end of the movable portion 30 can be matched with the cavity during molding.
In some embodiments of the invention, the mounting channel 11 comprises, in its axial direction: a first section 12 and a second section 13, wherein one end of the first section 12 is communicated with the cavity, one end of the second section 13 is communicated with the other end of the first section 12, the other end of the second section 13 is opposite to the reset part 20, and the inner diameter of the second section 13 is larger than that of the first section 12; the movable portion 30 includes a movable portion body 33 and a stopper 34, the movable portion body 33 is formed as a cylindrical member, the movable portion body 33 is disposed on the installation passage 11 and extends along the axial direction thereof, one end of the movable portion body 33 is matched with the clamping groove 401, the other end of the movable portion body 33 is matched with the reset portion 20, the stopper 34 is disposed on the second segment body 13 and is located on the outer peripheral surface of the movable portion body 33, the elastic member 35 is disposed on the second segment body 13 and is located on one side of the stopper 34 close to the direction of the first segment body 12, and when the movable portion 30 is located at the molding position 31, the elastic member 35 is in a compression state.
In some embodiments of the present invention, the mounting channel 11 further includes a third segment 14 along an 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, a radial dimension of the third segment 14 may be greater than a radial dimension of the second segment 13, a 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 a 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 typically sized under a suitable load depending on the desired force and travel, and the overall length of the mobile portion 30 may be determined by the spring. The minimum diameter of the molding section at one end of the movable body 33 is required to cover the reverse surface.
According to an embodiment of the present invention, the core back trip device 100 further includes a limiting portion 40, and the limiting portion 40 is located on a side of the stopper 34 close to the reset block for limiting a position of the stopper 34 in the second segment 13. The stopper 34 is required to be provided on the outer peripheral surface of the movable portion body 33 for bearing the elastic force of the spring and limiting the stopper at the limiting portion 40 under the pushing action of the spring, and the stopper 34 can limit the stopper 34 to continue to retreat after the releasing is completed.
Wherein, an open mounting groove may be provided at an end of the top block 10 facing the reset portion 20, a bottom wall of the mounting groove may be communicated with the mounting channel 11, and a stopper 34 may be installed at an 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 toward the direction of the reset portion 20, and can cooperate 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 oblique ejector rod, so that the situation that the reset part 30 and the movable part 30 cannot return due to interference after the oblique ejector rod returns is prevented.
Optionally, 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 provided around the outer circumferential surface of the movable portion body 33, and the outer circumferential surface of the stopper 34 is provided with a rotation stop surface to define the position of the movable portion body 33 in the circumferential direction.
In some embodiments of the invention, the top block 10 is a slanted top block and the top bar 50 is a slanted top bar.
The core back trip device 100 according to the embodiment of the invention is specifically described below with reference to a specific embodiment.
Example 1
Firstly, the required core pulling amount is measured and calculated according to the back-off amount of the buckle position and the safety margin, the angle of the inclined ejector rod can be calculated according to a trigonometric function formula by combining the ejection stroke of the mold, the design experience that the angle of the inclined ejector rod is generally below 12 degrees is designed according to the angle of the inclined ejector rod, and the final required reasonable inclination can be determined according to the range of the angle.
The pitched roof adopts split type, can mainly comprise forming part pitched roof block and pitched roof rod, also easily repaiies and joins in marriage when its processing of being convenient for, and the space of pitched roof block needs to satisfy inlays movable part 30, so the size needs reasonable in design, can fix on the pitched roof rod through the pin. A guide sleeve 60 can be arranged between the movable die core 200 and the outer peripheral surface of the oblique ejector rod, and the oblique ejector rod can be matched with the guide sleeve 60 and is embedded and fixed in the movable die core 200 through a clamp spring 61, so that the oblique ejector rod is convenient to assemble while being smoothly ejected. The tail of the oblique ejector rod is locked on the sliding groove of the oblique ejector seat 62 through a screw, and the standard oblique ejector seat 62 can be used so as to improve the stability and interchangeability of the device.
When the pitched roof is ejected, the movable part 30 is ejected out of the inverted buckling position through the transverse displacement amount in the pitched roof oblique movement, the tail part is leaned against the broken surface (the first molded surface 21) by the straight body of the reset part 20, and after the designed ejection distance of the die is opened, the movable part 30 and the pitched roof are completely separated from the product.
After the mold is opened, the movable portion 30 moves back to the limiting portion 40 under the action of the spring, and when the mold is closed again, the movable portion body 33 needs to return to the sealing position and compress the spring.
The following 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 resets, after the plastic part is subjected to injection molding, cooling molding and pressure maintaining, the mold is opened from a parting surface, an ejector rod of the injection molding machine acts on a mold ejector plate, and an inclined ejector rod is driven by an inclined ejector seat 62 to do inclined line motion along the fixed direction of the guide sleeve 60.
The movable part 30 is ejected out and separated from the inverted buckle glue position surface under the dual action of the inclined ejection block fixed on the inclined ejector rod and the straight body of the reset part 30 leaning against the broken section, and the tightening force of the buckle on the inclined ejection block is removed. The inclined top continues to eject, the spring in the compressed state pushes the movable portion 30 to move backward, as shown in fig. 6, the stopper 34 abuts against the limiting portion 40, and then the movable portion 30 moves backward and stops.
And the ejection stroke of the pitched roof is finished, and the pitched roof and the movable part 30 are completely separated from the product. After the mold 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 profile, meanwhile, the oblique top also completes the overall reset, and the plastic part can be subjected to the injection molding, cooling molding and pressure maintaining process again.
In summary, according to the core-pulling tripping device 100 in the embodiment of the present invention, the reliability of resetting can be ensured while the plastic part is ejected out and separated from the inverted buckle stably and smoothly, the problem of sticking of the plastic part to the inclined top is effectively avoided, the use of the split structure and the standard part facilitates 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 tripping device 100 according to the above-mentioned embodiment, and since the core back tripping device 100 according to the embodiment of the present invention has the above-mentioned technical effects, the mold according to the embodiment of the present invention also has corresponding technical effects, that is, the structural rationality can be effectively improved, and the product quality can be improved.
Other structures and operations of the mold according to the embodiments of the present invention are understood and easily accomplished by those skilled in the art, and thus will not be described in detail.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a trip gear looses core, can establish in the die cavity that forms between movable mould benevolence and the cover half benevolence with right product is tripped in the die cavity, the product is equipped with the draw-in groove that extends along its thickness direction, its characterized in that, trip gear looses core includes:
the ejector block is positioned between the movable die core and the fixed die core and arranged on one side of the die cavity, and the ejector block is provided with an installation channel which extends towards the direction of the die cavity and is opened at two ends;
the resetting part is positioned between the movable mold core and the fixed mold core and is arranged on one side, back to the cavity, of the ejector block, the resetting part is arranged opposite to one opened end of the mounting channel, one end, facing the direction of the ejector block, of the resetting part is sequentially provided with a first molded surface and a second molded surface from bottom to top, and the distance between the first molded surface and one opened end of the mounting channel is smaller than the distance between the second molded surface and one opened end of the mounting channel;
the movable part is arranged on the installation channel and can move between a forming position and a tripping position along the axial direction of the installation channel, at least one part of one end of the movable part penetrates through the other open end of the installation channel and is inserted into the clamping groove, the other end of the movable part is abutted against the first molded surface, the movable part is positioned on 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 relative movement occurs between the top block and the resetting part, the movable part moves from the forming position to the tripping position so that the formed product is tripped.
2. The core pulling tripping device according to claim 1, wherein one end of the ejector block, which faces away from the fixed mold core, is connected with the ejector rod so as to be driven by the ejector rod to move towards or away from the fixed mold core.
3. The core-pulling tripping 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 relative to the vertical direction, and one end of the reset portion facing the direction of the ejector block 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-shaped surface.
4. The core back trip device according to claim 1, wherein the locking groove is a through groove extending in a thickness direction of the product.
5. The core back trip device according to claim 1, wherein the mounting channel includes in an axial direction thereof:
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 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 part, the movable part body is arranged in the installation channel and extends along the axial direction of the installation 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 resetting part;
the stop block is arranged on the second section body and is positioned on the 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 close to the direction of the first section body, 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:
the limiting part is positioned on one side, close to the reset block, of the stop block and used for limiting the position of the stop block in the second section of the body.
6. The core-pulling tripping device according to claim 5, wherein an end surface of the other end of the movable portion body is an arc-shaped surface which is bent toward the direction in which the reset portion is located.
7. The core-pulling tripping device according to claim 5, wherein the limiting portion is connected with the ejector block and is located at the other end of the second segment.
8. The core-pulling tripping device according to claim 5, wherein the stopper is annularly arranged on the outer peripheral surface of the movable part body, and the outer peripheral surface of the stopper is provided with a rotation stopping surface to limit the position of the movable part body along the circumferential direction.
9. The core-pulling tripping device according to claim 2, wherein the ejector block is an inclined ejector block, and the ejector rod is an inclined ejector rod.
10. A mold comprising the core back trip device according to any one of claims 1 to 9.
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 |
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| 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 true CN110667051A (en) | 2020-01-10 |
| CN110667051B CN110667051B (en) | 2024-05-07 |
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| CN110667051B (en) | 2024-05-07 |
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