CN113977875B - Demolding structure and mold device - Google Patents
Demolding structure and mold device Download PDFInfo
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- CN113977875B CN113977875B CN202111168896.0A CN202111168896A CN113977875B CN 113977875 B CN113977875 B CN 113977875B CN 202111168896 A CN202111168896 A CN 202111168896A CN 113977875 B CN113977875 B CN 113977875B
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- pulling device
- inclined core
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- core pulling
- sliding
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 17
- 230000000670 limiting effect Effects 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005086 pumping 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
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- 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
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector 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 discloses a demolding structure and a mold device. The demoulding structure comprises a drawing device, a first inclined core pulling device, a second inclined core pulling device, a positioning piece and at least one inclined top; the first inclined core pulling device is connected with the big head end of the first inclined core pulling device and drives the first inclined core pulling device to move; the first inclined core pulling device is provided with a first clamping protrusion which extends from the small head end to the big head end; the inclined top is provided with a first clamping groove, and the first clamping protrusion is movably arranged in the first clamping groove; the inclined top is provided with a first positioning hole; the second inclined core pulling device is provided with a through cavity and is movably connected with the first inclined core pulling device; the first inclined core pulling and inclined ejection are movably arranged in the through cavity in a penetrating way; the second inclined core pulling device is provided with a second positioning hole communicated with the through cavity, and the second positioning hole is correspondingly arranged with the first positioning hole; the locating piece is movably arranged in the first locating hole and the second locating hole in a penetrating mode. The invention can improve the production efficiency of the die.
Description
Technical Field
The invention relates to the technical field of mold devices, in particular to a demolding structure and a mold device using the demolding structure.
Background
With the development and progress of the mold technology, the electronic products are updated, and the injection molding product structure is more and more compact. Originally, the plastic part of a plurality of products is to be disassembled, in order to reduce the splicing gaps, the appearance of the product is more attractive, the plastic part is not disassembled any more, the structure of the plastic part is complex, and the demolding directions are different. The BOSS columns, the inclined buckles, the inclined grooves and the like in different directions are reversely buckled at adjacent positions, and the product demoulding can be realized only by completing multiple demoulding actions under the same driving. The common die structure can not be realized, and can be realized only by adopting a manual insert mode, so that the die cost and the cost of a mechanical arm tool are increased, the molding period is too long, the production cost is greatly increased, and the production progress is seriously influenced.
Disclosure of Invention
The invention mainly aims to provide a demolding structure and a mold device, and aims to improve the production efficiency of a mold.
In order to achieve the above object, the present invention provides a demolding structure comprising:
a drawing device;
the first inclined core pulling device drives the first inclined core pulling device to move; the first inclined core pulling device is provided with a first clamping protrusion, and the first clamping protrusion extends from the small end to the big end;
the inclined roof is provided with a first clamping groove, and the first clamping protrusion is movably arranged in the first clamping groove; the inclined roof is provided with a first positioning hole;
the second inclined core pulling device is provided with a through cavity, and the second inclined core pulling device is movably connected with the first inclined core pulling device; the first oblique core pulling device and the oblique top are movably arranged in the through cavity in a penetrating mode, and one end, away from the drawing device, of the first oblique core pulling device extends out of the through cavity; the second inclined core pulling device is provided with a second positioning hole communicated with the through cavity, and the second positioning hole is correspondingly arranged with the first positioning hole; and
the locating piece is movably arranged in the first locating hole and the second locating hole in a penetrating mode.
In an embodiment of the invention, the first clamping groove is a dovetail groove or a T-shaped groove, and a shape of the first clamping protrusion is adapted to a shape of the first clamping groove.
In an embodiment of the present invention, the first oblique core pulling or the first clamping protrusion is provided with a third positioning hole in a strip shape, and the third positioning hole is arranged corresponding to the first positioning hole; the length extension direction of the third positioning hole is parallel to the extension direction of the first clamping protrusion; the locating piece is movably arranged in the third locating hole in a penetrating mode.
In an embodiment of the invention, the first oblique core-pulling device is provided with a first bolt, the second oblique core-pulling device is provided with a first bolt hole, and the first bolt is movably arranged in the first bolt hole in a penetrating manner so that the first oblique core-pulling device and the second oblique core-pulling device are movably connected.
In an embodiment of the invention, the drawing device includes:
the sliding seat is defined as a first direction, and is connected with the big end of the first inclined core pulling; the sliding seat is provided with a sliding through hole, and the extending direction of the sliding through hole and the first direction form an included angle; and
the bending pin penetrates through the sliding through hole; defining the moving direction of the bending pin as a second direction, wherein the first direction and the second direction form an included angle;
when the bent pin moves along the second direction, the sliding seat is pushed to move along the first direction so as to drive the first inclined core pulling device and/or the second inclined core pulling device to move.
In an embodiment of the invention, the drawing device further includes a first limiting block, and the first limiting block is disposed on a side of the sliding seat facing away from the first inclined core pulling device, and is used for limiting the sliding seat.
In an embodiment of the invention, the drawing device further includes a locking member, the locking member is provided with a first stop surface, the sliding seat is provided with a second stop surface, the locking member is movably clamped between the first limiting block and the sliding seat, and the first stop surface is abutted against the second stop surface; the moving direction of the locking piece is parallel to the second direction.
In an embodiment of the present invention, the sliding seat includes a first sliding portion and a second sliding portion, and the first sliding portion is slidably connected to the second sliding portion; the first sliding part is connected with the first inclined core pulling part, and is provided with the sliding through hole and the second stop surface; one side of the second inclined core pulling face, which faces the first sliding part, is abutted against the second sliding part;
the first sliding part is provided with a second bolt, the second sliding part is provided with a second bolt hole, and the second bolt is movably arranged in the second bolt hole in a penetrating mode, so that the first sliding part is movably connected with the second sliding part.
In an embodiment of the invention, the drawing device further includes a wear plate, the wear plate is slidably connected with the sliding seat, the wear plate is provided with a yielding hole, and the bent pin is movably inserted into the yielding hole.
The invention also proposes a mould device comprising:
the fixed die is provided with a mounting cavity; and
the first inclined core pulling, the inclined top pulling and the second inclined core pulling of the demoulding structure extend into the mounting cavity and are enclosed with the cavity wall of the mounting cavity to form a mould cavity, and the mould cavity is used for product forming.
According to the technical scheme, the pulling device provides a pulling force for the first inclined core pulling device, and drives the first inclined core pulling device to move so as to complete core pulling and demolding of the first inclined core pulling device. Because the locating piece wears to locate in first locating hole and the second locating hole, so at the in-process that the first is inclined to loose core and remove, the operation along the first inclined direction of loosing core removal can not take place to push up to one side. And because the size of the small end of the first inclined core pulling is smaller than that of the large end, when the first inclined core pulling relatively moves to the inclined top, the first clamping protrusion generates a pulling force to the inclined top, so that the inclined top moves towards one side where the first inclined core pulling is located, and the lateral core pulling of the composite angle of the inclined top is completed. The second inclined core-pulling device is movably connected with the first inclined core-pulling device, so that the first inclined core-pulling device and the second inclined core-pulling device can be ensured to perform relative motion, the limiting effect on the inclined ejection is achieved through the positioning piece, meanwhile, as the first inclined core-pulling device and the second inclined core-pulling device are connected, after the demoulding operation of the first inclined core-pulling device and the inclined ejection is finished, the first inclined core-pulling device can be driven to perform the movement of the first inclined core-pulling device, the inclined ejection device and the second inclined core-pulling device to complete integral demoulding. The invention can realize product demoulding after completing demoulding actions for a plurality of times under the same drive, thereby improving the production efficiency. The invention can realize demoulding of the back-off in different directions in a local small range of the product. The invention utilizes the structure of the first inclined core pulling of the second inclined core pulling sleeve, and utilizes the drawing device to drive and complete the whole movement process, thereby simplifying the structure of the die. The die opening and closing sequence is not required to be controlled, and the common two-plate die opening and closing sequence is adopted, so that the reject ratio of products caused by manual insert picking and placing is reduced, the number of times of die test and die repair is reduced, the structure is stable, the molding cycle is effectively shortened, and the production efficiency of the injection mold is extremely high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an exploded view of one embodiment of a demolding structure of the present invention;
FIG. 2 is an assembled schematic view of FIG. 1;
FIG. 3 is a schematic view of the first inclined core-pulling and inclined roof of FIG. 1;
FIG. 4 is a schematic diagram illustrating an assembly of the first sliding portion and the oblique pumping assembly in FIG. 1;
FIG. 5 is a schematic view showing a state in which the demolding structure of the present invention performs one sliding motion;
FIG. 6 is an enlarged schematic view of FIG. 5A;
FIG. 7 is a schematic view showing a secondary sliding of the demolding structure according to the present invention;
fig. 8 is a schematic view of another embodiment of the stripping structure of the present invention.
Reference numerals illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "a and/or B", including a scheme, or B scheme, or a scheme that is satisfied by both a and B. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a demolding structure. It can be appreciated that the demolding structure is applied to a mold device, the mold device can be used for injection molding of products, and smooth demolding of the products, particularly demolding of the products provided with the back-off or buckling positions, can be conveniently realized through the demolding structure.
In an embodiment of the present invention, as shown in fig. 1 to 7, the demolding structure includes:
a drawing device 1;
the first inclined core pulling device 1 drives the first inclined core pulling device 2 to move; the first inclined core pulling device 2 is provided with a first clamping protrusion 21, and the first clamping protrusion 21 extends from the small end to the big end;
at least one inclined top 3, wherein the inclined top 3 is provided with a first clamping groove 3a, and the first clamping protrusion 21 is movably arranged in the first clamping groove 3 a; the inclined roof 3 is provided with a first positioning hole 3b;
the second inclined core pulling device comprises a second inclined core pulling device 4, wherein a through cavity 4a is formed in the second inclined core pulling device 4, and the second inclined core pulling device 4 is movably connected with the first inclined core pulling device 2; the first inclined core pulling device 2 and the inclined top 3 are movably arranged in the through cavity 4a in a penetrating manner, and one end far away from the drawing device 1 extends out of the through cavity 4 a; the second inclined core pulling device 4 is provided with a second positioning hole 4b communicated with the through cavity 4a, and the second positioning hole 4b is correspondingly arranged with the first positioning hole 3b; and
the locating piece 5 is movably arranged in the first locating hole 3b and the second locating hole 4b in a penetrating mode.
In this embodiment, the extending direction of the first clamping protrusion 21 and the moving direction of the first inclined core-pulling device 2 form an included angle. The first inclined core pulling device 2, the inclined top 3 and the second inclined core pulling device 4 form an inclined drawing assembly.
It can be understood that the drawing device 1 provides a pulling force for the first inclined core-pulling device 2, so that the first inclined core-pulling device 2 is driven to move, and the core-pulling and demolding of the first inclined core-pulling device 2 are completed. Because the positioning piece 5 is arranged in the first positioning hole 3b and the second positioning hole 4b in a penetrating way, the inclined top 3 does not run along the moving direction of the first inclined core pulling 2 in the moving process of the first inclined core pulling 2. And because the size of the small end of the first inclined core-pulling 2 is smaller than that of the large end, and the extending direction of the first clamping protrusion 21 and the moving direction of the first inclined core-pulling 2 are arranged at an included angle, when the first inclined core-pulling 2 moves relatively to the inclined top 3, the first clamping protrusion 21 generates a pulling force to the inclined top 3, so that the inclined top 3 moves towards one side where the first inclined core-pulling 2 is located, and the lateral core-pulling of the composite angle of the inclined top 3 is completed. The second inclined core-pulling device 4 is movably connected with the first inclined core-pulling device 2, so that the first inclined core-pulling device 2 and the second inclined core-pulling device 4 can be ensured to perform relative motion, the positioning piece 5 is used for limiting the inclined top 3, and meanwhile, the first inclined core-pulling device 2 and the second inclined core-pulling device 4 are connected, after the demoulding operation of the first inclined core-pulling device 2 and the inclined top 3 is completed, the first inclined core-pulling device 1 is driven to move when the first inclined core-pulling device 2 is continuously pulled, and the first inclined core-pulling device 2, the inclined top 3 and the second inclined core-pulling device 4 are driven to move so as to complete integral demoulding. The invention can realize product demoulding after completing demoulding actions for a plurality of times under the same drive, thereby improving the production efficiency. The invention can realize demoulding of the inverted buckle with different directions in a local small range of the product, the first inclined core-pulling 2 drives the movement of the composite angle side core-pulling inclined roof 3 through the cooperation of the first clamping bulge 21 and the inclined roof 3, and the inclined roof 3 is demoulded preferentially under the drive of the drawing device 1; finally, under the drive of the drawing device 1, core pulling and demolding movement of the second inclined core pulling 4 is completed, and in the movement process, the first inclined core pulling 2, the inclined top 3 and the second inclined core pulling 4 are simultaneously carried to move together, so that the demolding movement of the whole inclined drawing assembly is finally realized. The invention utilizes the structure of the second inclined core-pulling 4 sleeve and the first inclined core-pulling 2, and utilizes the drawing device 1 to drive and complete the demoulding movement process of the whole inclined drawing assembly, thereby simplifying the mould structure. The die opening and closing sequence is not required to be controlled, and the common two-plate die opening and closing sequence is adopted, so that the reject ratio of products caused by manual insert picking and placing is reduced, the number of times of die test and die repair is reduced, the structure is stable, the molding cycle is effectively shortened, and the production efficiency of the injection mold is extremely high.
In this embodiment, the number of the inclined crests 3 is two, and in other embodiments, the number of the inclined crests 3 may be three, four or five or more, which is not limited herein, and the number of the inclined crests 3 may be designed according to the structure of the actual mold.
In this embodiment, one of the first inclined core-pulling device 2 and the second inclined core-pulling device 4 is provided with a first guide rod (not numbered in the figure), and the other one of the first inclined core-pulling device and the second inclined core-pulling device is provided with a first guide hole, the first guide rod is movably inserted into the first guide hole, and the extending direction of the first guide rod is parallel to the moving direction of the first inclined core-pulling device 2.
In an embodiment of the present invention, as shown in fig. 3, the first clamping groove 3a is a dovetail groove or a T-shaped groove, and the shape of the first clamping protrusion 21 is adapted to the shape of the first clamping groove 3 a.
It will be appreciated that the cross section of the first engaging protrusion 21 is trapezoidal, and the dimension of the end of the cross section away from the first inclined core-pulling device 2 is greater than that of the end close to the first inclined core-pulling device 2. Through the design of dovetail or T type groove, can realize the joint cooperation of first joint protruding 21 and first joint recess 3a, when first joint protruding 21 moves along with first oblique core-pulling 2, first joint protruding 21 can exert the effort to the cell wall of first joint recess 3a for first oblique top 3 receives the effort towards first oblique core-pulling 2 direction, so that oblique top 3 moves towards the one side that first oblique core-pulling 2 is located, at the in-process that oblique top 3 removed, setting element 5 provides the guide effect. Referring to fig. 6, the direction of movement of the two ramp 3 upon receipt of the force of the first snap projection 21 is shown in one embodiment.
In an embodiment of the present invention, as shown in fig. 3, the first core-pulling inclined core 2 or the first clamping protrusion 21 is provided with a third positioning hole 2a having a strip shape, and the third positioning hole 2a is disposed corresponding to the first positioning hole 3b; the length extending direction of the third positioning hole 2a is parallel to the extending direction of the first clamping protrusion 21; the positioning piece 5 is movably arranged in the third positioning hole 2a in a penetrating manner.
It can be appreciated that, through the arrangement of the third positioning hole 2a, on one hand, the positioning piece 5 can be limited, and the positioning piece 5 is prevented from shaking. The third positioning holes 2a are arranged in a long strip shape, so that the sliding of the first inclined core-pulling device 2 relative to the inclined top 3 can be ensured to be smoothly carried out. Meanwhile, two ends of the third positioning hole 2a can limit the mutual sliding displacement of the first inclined core pulling 2 and the inclined top 3. When one end of the third positioning hole 2a far away from the drawing device 1 is abutted against the positioning piece 5, the first inclined core pulling 2 can drive the inclined top 3 to synchronously move through the positioning piece 5 when the first inclined core pulling 2 is driven by the drawing device 1 to continuously move.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the first core-pulling inclined 2 is provided with a first plug pin 22, the second core-pulling inclined 4 is provided with a first plug pin hole 4c, and the first plug pin 22 movably penetrates through the first plug pin hole 4c, so that the first core-pulling inclined 2 and the second core-pulling inclined 4 are movably connected.
It can be understood that the first inclined core-pulling device 2 drives the first plug pin 22 to move, and when the first plug pin 22 moves to abut against one side, close to the drawing device 1, of the first plug pin hole 4c, the first plug pin 22 pushes the second inclined core-pulling device 4 to move, so that the first inclined core-pulling device 2 and the second inclined core-pulling device 4 synchronously move.
In this embodiment, the first inclined core-pulling device 2 is provided with a first mounting hole 2b, the second inclined core-pulling device 4 is provided with a first bolt hole 4c, and the first bolt hole 4c is arranged corresponding to the first mounting hole 2 b; the size of the first bolt holes 4c along the moving direction of the first inclined core back 2 is larger than the size of the first mounting holes 2b along the moving direction of the first inclined core back 2; the first bolt 22 is limited in the first mounting hole 2b and movably penetrates through the first bolt hole 4 c.
In one embodiment of the present invention, as shown in fig. 1, 2, 4, 5 and 7, the drawing device 1 includes:
the sliding seat 11 defines the moving direction of the sliding seat 11 as a first direction, and the sliding seat 11 is connected with the big head end of the first inclined core pulling 2; the sliding seat 11 is provided with a sliding through hole 11a, and the extending direction of the sliding through hole 11a and the first direction form an included angle; and
a bending pin 12, wherein the bending pin 12 is inserted into the sliding through hole 11a, and the peripheral wall of the bending pin 12 is abutted against the wall of the sliding through hole 11 a; defining the moving direction of the bent pin 12 as a second direction, wherein the first direction and the second direction form an included angle;
when the bent pin 12 moves along the second direction, the sliding seat 11 is pushed to move along the first direction, so as to drive the first inclined core-pulling device 2 and/or the second inclined core-pulling device 4 to move.
It will be appreciated that, by the above design, when the bent pin 12 moves along the second direction, the bent pin 12 generates a force on the hole wall of the sliding through hole 11a, and the force has a component force in the first direction, and the component force pushes the sliding seat 11 to move along the first direction so as to drive the first inclined core back 2 and/or the second inclined core back 4 to move.
In this embodiment, the bending pin 12 includes a traction portion 121 and a bending portion 122 connected to the traction portion 121, the bending portion 122 is disposed in the sliding through hole 11a in a penetrating manner, and a peripheral wall of the bending portion 122 abuts against a wall of the sliding through hole 11 a.
In this embodiment, the moving direction of the first oblique core-pulling device 2 is set at an included angle with the first direction, so as to realize oblique pulling.
In an embodiment of the present invention, as shown in fig. 8, the drawing device 1 further includes a first limiting block 13, where the first limiting block 13 is disposed on a side of the sliding seat 11 facing away from the first core-pulling oblique 2, and is used for limiting the sliding seat 11. It can be understood that the movement limit position of the sliding seat 11 is limited by the first limiting block 13.
In an embodiment of the present invention, as shown in fig. 1, 2, 5, 7 and 8, the drawing device 1 further includes a locking member 14, the locking member 14 is provided with a first stop surface 14a, the sliding seat 11 is provided with a second stop surface 11b, the locking member 14 is movably clamped between the first limiting block 13 and the sliding seat 11, and the first stop surface 14a abuts against the second stop surface 11b; the moving direction of the locking member 14 is parallel to the second direction.
It will be appreciated that the slide seat 11 may be clamped by the locking member 14 to ensure stability of the mold during injection, and the locking member 14 and the bent pin 12 move synchronously in the second direction when the injection mold is opened after the injection mold is completed to ensure that the slide seat 11 can move.
In this embodiment, the first stop surface 14a and the second stop surface 11b are disposed obliquely and parallel to the extending direction of the sliding through hole 11 a. The sliding seat 11 can be prevented from colliding with the locking member 14 when moving.
In an embodiment of the present invention, as shown in fig. 1, 2, 4, 5 and 7, the sliding seat 11 includes a first sliding portion 111 and a second sliding portion 112, and the first sliding portion 111 is slidably connected to the second sliding portion 112; the first sliding part 111 is connected with the first inclined core pulling device 2, and the first sliding part 111 is provided with the sliding through hole 11a and the second stop surface 11b; the second inclined core-pulling device 4 is abutted against the second sliding part 112 at the side facing the first sliding part 111;
the first sliding portion 111 is provided with a second bolt 15, the second sliding portion 112 is provided with a second bolt hole 112a, and the second bolt 15 movably penetrates through the second bolt hole 112a, so that the first sliding portion 111 and the second sliding portion 112 are movably connected.
In this embodiment, the first limiting block 13 is used to limit the second sliding portion 112.
It can be understood that the bent pin 12 pushes the first sliding portion 111 to move, so as to drive the second plug pin 15 to move, and when the second plug pin 15 moves to abut against one end of the second plug pin hole 112a away from the first core-pulling device 2, the second plug pin 15 pushes the second sliding seat 11 to move. The side of the second inclined core-pulling device 4 facing the first sliding portion 111 abuts against the second sliding portion 112, so that the second inclined core-pulling device 4 is ensured not to move when the second sliding portion 112 does not move, and the stability of the second inclined core-pulling device 4, that is, smooth demolding of the first inclined core-pulling device 2 and the inclined top 3, is ensured. After the first inclined core pulling device 2 and the inclined ejection device 3 are demolded, the second bolt 15 moves to be abutted against one end, far away from the first inclined core pulling device 2, of the second bolt hole 112a, the first bolt 22 moves to be abutted against one side, close to the drawing device 1, of the first bolt hole 4c, and when the bent bolt 12 pushes the first sliding part 111 to move and drives the first inclined core pulling device 2 to move, the second sliding seat 11 and the second inclined core pulling device 4 are driven to move through the first bolt 22 and the second bolt 15, so that the demolding of the whole inclined drawing assembly is completed.
In this embodiment, one of the first sliding portion 111 and the second sliding portion 112 is provided with a second guide rod, and the other one of the two is provided with a second guide hole, the second guide rod is movably inserted into the second guide hole, and the extending direction of the second guide rod is parallel to the moving direction of the first sliding portion 111.
The first sliding part 111 is provided with a second mounting hole 111a, the second sliding part 112 is provided with a second bolt hole 112a, and the second bolt hole 112a is arranged corresponding to the second mounting hole 111 a; the second latch hole 112a has a dimension along the first direction that is greater than a dimension along the first direction of the second mounting hole 111 a;
the second bolt 15 is limited in the second mounting hole 111a and movably penetrates through the second bolt hole 112a, so that the first sliding portion 111 and the second sliding portion 112 are movably connected.
In an embodiment of the present invention, the sliding seat 11 is provided with a second clamping protrusion 1111, the first inclined core-pulling device 2 is provided with a second clamping groove 2c, and the second clamping protrusion 1111 movably penetrates the second clamping groove 2c. The second clamping groove 2c is a T-shaped groove, and the shape of the second clamping protrusion 1111 is matched with the shape of the second clamping groove 2c.
In this embodiment, the side of the first sliding portion 111 facing the first inclined core-pulling device 2 is provided with the second engaging protrusion 1111.
In an embodiment of the present invention, as shown in fig. 8, the drawing device 1 further includes a wear plate 16, the wear plate 16 is slidably connected with the sliding seat 11, the wear plate 16 is provided with a yielding hole, and the bent pin 12 is movably disposed in the yielding hole.
In this embodiment, the second sliding portion 112 is slidably connected to the wear plate 16. The wear plate 16 provides support for the slide 11 while reducing friction and improving the service life of the slide 11.
In an embodiment of the present invention, as shown in fig. 8, the drawing device 1 further includes a second limiting block 17, where the second limiting block 17 is located on a side of the wear plate 16 facing away from the sliding seat 11 and on a side of the bent pin 12 facing away from the first core back 2, so as to lock the bent pin 12. Ensuring that the bent pin 12 does not drive the sliding seat 11 to move during injection molding.
Specifically, the working process of one embodiment of the demolding device is as follows:
(1) when the injection mold is opened after the injection mold is completed and the injection product is opened, the locking piece 14 and the bent pin 12 move along the second direction, the first sliding part 111 starts to move under the driving of the bent pin 12, and as shown in fig. 5, when the locking piece 14 and the bent pin 12 move to a distance H1, the second sliding part 112 does not start to act at this time, and the first inclined core pulling 2 finishes inclined core pulling under the driving of the first sliding part 111; meanwhile, the inclined top 3 completes lateral core pulling of a compound angle under the driving of the first inclined core pulling 2 and under the guiding of the positioning piece 5; namely: when the locking member 14 and the bent pin 12 move by the distance H1, the first sliding portion 111 moves by the distance S1, the first inclined core-pulling portion 2 moves by the distance S3, and the inclined top 3 performs the side core-pulling operation, so that the first inclined core-pulling operation is completed. Note that: during this time, the second slide 112 and the second inclined core back 4 remain stationary.
(2) After the mold is continuously opened, the time delay action of the locking piece 14 on the second sliding part 112 is finished, the bent pin 12 continuously drives the first sliding part 111, the first sliding part 111 drives the second sliding part 112 to move together through the second bolt 15, at the moment, the first sliding part 111 drives the first inclined core pulling 2 and the inclined top 3 to move together, and simultaneously, the second inclined core pulling 4 also moves together under the driving of the first bolt 22, so that the second inclined core pulling action is realized. At this time, the first sliding portion 111 and the second sliding portion 112 move together by a distance S2, and the first stopper 13 restricts the second sliding portion 112.
The invention also proposes a mould device comprising:
the fixed die is provided with a mounting cavity; and
the first inclined core pulling 2, the inclined top 3 and the second inclined core pulling 4 of the demoulding structure extend into the mounting cavity and enclose with the cavity wall of the mounting cavity to form a mould cavity, and the mould cavity is used for product forming.
The specific structure of the demolding structure refers to the above embodiments, and because the mold device adopts all the technical schemes of all the embodiments, the mold device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (9)
1. A demolding structure, characterized in that the demolding structure comprises:
a drawing device;
the first inclined core pulling device drives the first inclined core pulling device to move; the first inclined core pulling device is provided with a first clamping protrusion, and the first clamping protrusion extends from the small end to the big end;
the inclined roof is provided with a first clamping groove, and the first clamping protrusion is movably arranged in the first clamping groove; the inclined roof is provided with a first positioning hole;
the second inclined core pulling device is provided with a through cavity, and the second inclined core pulling device is movably connected with the first inclined core pulling device; the first oblique core pulling device and the oblique top are movably arranged in the through cavity in a penetrating mode, and one end, away from the drawing device, of the first oblique core pulling device extends out of the through cavity; the second inclined core pulling device is provided with a second positioning hole communicated with the through cavity, and the second positioning hole is correspondingly arranged with the first positioning hole; and
the positioning piece is movably arranged in the first positioning hole and the second positioning hole in a penetrating mode;
the first oblique core pulling or the first clamping protrusion is provided with a strip-shaped third positioning hole, and the third positioning hole is arranged corresponding to the first positioning hole; the length extension direction of the third positioning hole is parallel to the extension direction of the first clamping protrusion; the locating piece is movably arranged in the third locating hole in a penetrating mode.
2. The demolding structure as claimed in claim 1, wherein the first clamping groove is a dovetail groove or a T-shaped groove, and the shape of the first clamping protrusion is adapted to the shape of the first clamping groove.
3. The demolding structure as claimed in claim 1, wherein the first oblique core-pulling device is provided with a first plug pin, the second oblique core-pulling device is provided with a first plug pin hole, and the first plug pin is movably arranged in the first plug pin hole in a penetrating manner so that the first oblique core-pulling device and the second oblique core-pulling device are movably connected.
4. A demoulding structure as claimed in any one of claims 1 to 3, wherein said drawing means comprises:
the sliding seat is defined as a first direction, and is connected with the big end of the first inclined core pulling; the sliding seat is provided with a sliding through hole, and the extending direction of the sliding through hole and the first direction form an included angle; and
the bending pin penetrates through the sliding through hole; defining the moving direction of the bending pin as a second direction, wherein the first direction and the second direction form an included angle;
when the bent pin moves along the second direction, the sliding seat is pushed to move along the first direction so as to drive the first inclined core pulling device and/or the second inclined core pulling device to move.
5. The stripper structure of claim 4, wherein the drawer device further comprises a first stop block disposed on a side of the slide block facing away from the first diagonal draw core, for limiting the slide block.
6. The stripping structure of claim 5, wherein the drawing device further comprises a locking member, the locking member is provided with a first stop surface, the sliding seat is provided with a second stop surface, the locking member is movably clamped between the first limiting block and the sliding seat, and the first stop surface is abutted against the second stop surface; the moving direction of the locking piece is parallel to the second direction.
7. The stripper structure of claim 6, wherein the slide base includes a first slide and a second slide, the first slide being slidably coupled to the second slide; the first sliding part is connected with the first inclined core pulling part, and is provided with the sliding through hole and the second stop surface; one side of the second inclined core pulling face, which faces the first sliding part, is abutted against the second sliding part;
the first sliding part is provided with a second bolt, the second sliding part is provided with a second bolt hole, and the second bolt is movably arranged in the second bolt hole in a penetrating mode, so that the first sliding part is movably connected with the second sliding part.
8. The stripping structure of claim 4, wherein the drawing device further comprises a wear plate slidably connected to the sliding seat, the wear plate having a relief hole, the bent pin movably disposed in the relief hole.
9. A mold apparatus, the mold apparatus comprising:
the fixed die is provided with a mounting cavity; and
the mold release structure according to any one of claims 1 to 8, wherein the first inclined core-pulling, the inclined roof and the second inclined core-pulling of the mold release structure extend into the installation cavity and enclose with the cavity wall of the installation cavity to form a mold cavity for product molding.
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| CN202111168896.0A CN113977875B (en) | 2021-09-30 | 2021-09-30 | Demolding structure and mold device |
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| CN202111168896.0A CN113977875B (en) | 2021-09-30 | 2021-09-30 | Demolding structure and mold device |
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| CN213353382U (en) * | 2020-07-10 | 2021-06-04 | 珠海格力精密模具有限公司 | Slider is loosed core to one side and is drawn mode structure |
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| CN202507483U (en) * | 2012-03-22 | 2012-10-31 | 宁波方正汽车模具有限公司 | Transverse pitched roof core-drawing device arranged in transverse slider |
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| CN113977875A (en) | 2022-01-28 |
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